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Relion650 series
Generator protection REG650Application Manual
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Document ID: 1MRK 502 042-UENIssued: June 2012
Revision: -Product version: 1.2
Copyright 2012 ABB. All rights reserved
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CopyrightThis document and parts thereof must not be reproduced or copied without written
permission from ABB, and the contents thereof must not be imparted to a thirdparty, nor used for any unauthorized purpose.
The software and hardware described in this document is furnished under a licenseand may be used or disclosed only in accordance with the terms of such license.
TrademarksABB and Relion are registered trademarks of the ABB Group. All other brand or
product names mentioned in this document may be trademarks or registeredtrademarks of their respective holders.
WarrantyPlease inquire about the terms of warranty from your nearest ABB representative.
ABB AB
Substation Automation Products
SE-721 59 Vsters
Sweden
Telephone: +46 (0) 21 32 50 00
Facsimile: +46 (0) 21 14 69 18
http://www.abb.com/substationautomation
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DisclaimerThe data, examples and diagrams in this manual are included solely for the concept
or product description and are not to be deemed as a statement of guaranteedproperties. All persons responsible for applying the equipment addressed in thismanual must satisfy themselves that each intended application is suitable andacceptable, including that any applicable safety or other operational requirementsare complied with. In particular, any risks in applications where a system failure and/or product failure would create a risk for harm to property or persons (including butnot limited to personal injuries or death) shall be the sole responsibility of the
person or entity applying the equipment, and those so responsible are herebyrequested to ensure that all measures are taken to exclude or mitigate such risks.
This document has been carefully checked by ABB but deviations cannot becompletely ruled out. In case any errors are detected, the reader is kindly requestedto notify the manufacturer. Other than under explicit contractual commitments, inno event shall ABB be responsible or liable for any loss or damage resulting fromthe use of this manual or the application of the equipment.
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ConformityThis product complies with the directive of the Council of the European
Communities on the approximation of the laws of the Member States relating toelectromagnetic compatibility (EMC Directive 2004/108/EC) and concerningelectrical equipment for use within specified voltage limits (Low-voltage directive2006/95/EC). This conformity is the result of tests conducted by ABB inaccordance with the product standards EN 50263 and EN 60255-26 for the EMCdirective, and with the product standards EN 60255-1 and EN 60255-27 for the lowvoltage directive. The product is designed in accordance with the internationalstandards of the IEC 60255 series.
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Table of contentsSection 1 Introduction.....................................................................15
This manual......................................................................................15
Intended audience............................................................................1 5
Product documentation.................................................................. ...16
Product documentation set..........................................................16
Document revision history...........................................................17
Related documents......................................................................17
Symbols and conventions.................................................................18
Symbols.......................................................................................18
Document conventions................................................................19
Section 2 Application......................................................................21REG650 application..........................................................................21
Available functions............................................................................24
Main protection functions.............................................................24
Back-up protection functions.......................................................24
Control and monitoring functions.................................................25
Communication............................................................................28
Basic IED functions.....................................................................29
REG650 application examples.........................................................30Adaptation to different applications.............................................30
Single generator connected via a unit transformer to a
High Voltage (HV) system......................................................31
Single generator, including the auxiliary transformer,
connected via an unit transformer to a High Voltage
(HV) system............................................................................32
Generating unit, including both generator and unit
transformer, connected to a solidly earthed High
Voltage (HV) system..............................................................33
Generating unit, including both generator and unit
transformer, connected to a high impedance earthed
High Voltage (HV) system......................................................34
Functionality table..................................................................35
Single generator/transformer unit, connected to a solidly
earthed High Voltage (HV) system, with redundant
protection................................................................................38
Single generator/transformer unit, connected to a high
impedance earthed High Voltage (HV) system, with
redundant protection..............................................................39
Two generators having one three-winding unit
transformer, connected to a solidly earthed High
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Voltage (HV) system, with redundant protection with unit
differential protection including the generators.......................40
Two generators having one three-winding unit
transformer, connected to a solidly earthed High
Voltage (HV) system, with redundant protection with unit
transformer differential protection...........................................41
Functionality table..................................................................42
Section 3 REG650 setting examples..............................................45Calculating general settings for analogue TRM inputs 4I 1I 5U... ... .47
Calculating general settings for analogue AIM inputs 6I 4U.............48
Preprocessing blocks SMAI..............................................................49
Calculating settings for global base values for setting function
GBASVAL.........................................................................................50
Calculating settings for generator differential protectionGENPDIF .........................................................................................51
Calculating settings for underimpedance protection for
generators and transformers ZGCPDIS ..........................................53
Calculating settings for zone 1....................................................53
Calculating settings for zone 2....................................................54
Calculating settings for zone 3....................................................54
Calculating settings for the Load encroachment function............55
Calculating settings for out-of-step protection OOSPPAM ..............56
Calculating settings for loss of excitation LEXPDIS ........................61
Negative-sequence time overcurrent protection for machinesNS2PTOC ........................................................................................65
Calculating settings for four step phase overcurrent protection
3-phase output OC4PTOC ..............................................................65
Calculating settings for generator phase overcurrent
protection.....................................................................................65
Calculating settings for step 1................................................65
Calculating settings for step 2................................................66
Calculating settings for auxiliary transformer phase
overcurrent protection..................................................................66
Calculating settings for step 1................................................67
Calculating settings for step 4................................................67
100% Stator earth fault protection, 3rd harmonic based
STEFPHIZ .......................................................................................68
Stator earth fault protection (neutral point voltage)..........................70
Section 4 Analog inputs..................................................................71Introduction.......................................................................................71
Setting guidelines.............................................................................71
Setting of the phase reference channel.......................................71
Setting of current channels..........................................................72
Example 1..............................................................................72
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Example 2..............................................................................73
Examples on how to connect, configure and set CT
inputs for most commonly used CT connections....................74
Example on how to connect a star connected three-phase CT set to the IED.........................................................75
Example how to connect single-phase CT to the IED............77
Setting of voltage channels.........................................................79
Example.................................................................................79
Examples how to connect, configure and set VT inputs
for most commonly used VT connections..............................79
Examples onhow to connect a three phase-to-earth
connected VT to the IED........................................................80
Example how to connect the open delta VT to the IED
for low impedance earthed or solidly earthed power
systems..................................................................................81
Example on how to connect a neutral point VT to the
IED.........................................................................................83
Section 5 Local human-machine interface.....................................87Local HMI.........................................................................................87
Display.........................................................................................87
LEDs............................................................................................89
Keypad........................................................................................89
Local HMI functionality................................................................90
Protection and alarm indication..............................................90Parameter management ........................................................92
Front communication..............................................................92
Single-line diagram.................................................................93
Section 6 Differential protection.....................................................95Transformer differential protection T2WPDIF and T3WPDIF ..........95
Identification................................................................................95
Application...................................................................................95
Setting guidelines........................................................................96
Inrush restraint methods.........................................................96
Overexcitation restraint method.............................................96
Cross-blocking between phases............................................97
Restrained and unrestrained differential protection................97
Elimination of zero sequence currents...................................98
Internal/External fault discriminator........................................99
Differential current alarm......................................................101
Switch onto fault feature.......................................................101
Setting example.........................................................................101
CT Connections....................................................................101
1Ph High impedance differential protection HZPDIF .....................103
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Identification..............................................................................103
Application.................................................................................103
The basics of the high impedance principle.........................104
Connection examples for high impedance differentialprotection...................................................................................110
Connections for 1Ph restricted earth fault and high
impedance differential protection.........................................110
Setting guidelines......................................................................111
Configuration........................................................................111
Settings of protection function..............................................111
Restricted earth fault protection REFPDIF...........................112
Alarm level operation............................................................114
Generator differential protection GENPDIF ...................................115
Identification..............................................................................115
Application.................................................................................116
Setting guidelines......................................................................117
General settings...................................................................117
Percentage restrained differential operation........................118
Negative sequence internal/external fault discriminator
feature..................................................................................120
Other additional options.......................................................121
Open CT detection...............................................................122
Section 7 Impedance protection...................................................125Underimpedance protection for generators and transformers
ZGCPDIS .......................................................................................125
Identification..............................................................................125
Application.................................................................................125
Setting guidelines......................................................................125
Loss of excitation LEXPDIS............................................................127
Identification..............................................................................127
Application.................................................................................127
Setting guidelines......................................................................133
Out-of-step protection OOSPPAM .................................................136
Identification..............................................................................136
Application.................................................................................136
Setting guidelines......................................................................139
Load enchroachment LEPDIS........................................................142
Identification..............................................................................142
Application.................................................................................142
Setting guidelines......................................................................142
Resistivereach with load encroachment characteristic........142
Section 8 Current protection.........................................................145
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Four step phase overcurrent protection 3-phase output
OC4PTOC .....................................................................................145
Identification..............................................................................145
Application.................................................................................145Setting guidelines......................................................................146
Settings for steps 1 to 4 .......................................................147
2nd harmonic restrain...........................................................149
Four step residual overcurrent protection, zero, negative
sequence direction EF4PTOC .......................................................155
Identification..............................................................................155
Application.................................................................................155
Setting guidelines......................................................................157
Settings for steps 1 and 4 ....................................................157
Common settings for all steps..............................................159
2nd harmonic restrain...........................................................160
Sensitive directional residual overcurrent and power protection
SDEPSDE .....................................................................................161
Identification.............................................................................. 161
Application.................................................................................161
Setting guidelines......................................................................162
Thermal overload protection, two time constants TRPTTR ...........169
Identification..............................................................................169
Application.................................................................................169
Setting guideline........................................................................170
Breaker failure protection 3-phase activation and output
CCRBRF ........................................................................................172
Identification..............................................................................17 3
Application.................................................................................173
Setting guidelines......................................................................173
Pole discordance protection CCRPLD ..........................................176
Identification..............................................................................176
Application.................................................................................176
Setting guidelines......................................................................177
Directional over-/under-power protection GOPPDOP/
GUPPDUP......................................................................................178
Application.................................................................................178
Directional overpower protection GOPPDOP ...........................180
Identification.........................................................................180
Setting guidelines.................................................................180
Directional underpower protection GUPPDUP..........................184
Identification.........................................................................184
Setting guidelines.................................................................184
Accidental energizing protection for synchronous generator
AEGGAPC......................................................................................187
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Identification..............................................................................187
Application.................................................................................187
Setting guidelines......................................................................187
Negative-sequence time overcurrent protection for machinesNS2PTOC ......................................................................................188
Identification..............................................................................188
Application.................................................................................189
Features...............................................................................189
Generator continuous unbalance current capability.............190
Setting guidelines......................................................................192
Operate time characteristic..................................................192
Start sensitivity.....................................................................193
Alarm function......................................................................193
Voltage-restrained time overcurrent protection VR2PVOC............194Identification..............................................................................194
Application.................................................................................194
Base quantities.....................................................................194
Application possibilities........................................................195
Under-voltage seal-in...........................................................195
Setting guidelines......................................................................196
Voltage restrained overcurrent protection for generator
and step-up transformer.......................................................196
Overcurrent protection with undervoltage seal-in.................196
Section 9 Voltage protection........................................................199Two step undervoltage protection UV2PTUV ................................199
Identification..............................................................................199
Application.................................................................................199
Setting guidelines......................................................................200
Equipment protection, such as for motors and
generators............................................................................200
Disconnected equipment detection......................................200
Power supply quality ...........................................................200
Voltage instability mitigation.................................................200
Backup protection for power system faults...........................200
Settings for Two step undervoltage protection.....................201
Two step overvoltage protection OV2PTOV ..................................202
Identification..............................................................................202
Application.................................................................................202
Setting guidelines......................................................................203
Two step residual overvoltage protection ROV2PTOV .................205
Identification..............................................................................205
Application.................................................................................205
Setting guidelines......................................................................206
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Equipment protection, such as for motors, generators,
reactors and transformers....................................................206
Stator earth-fault protection based on residual voltage
measurement.......................................................................206
Power supply quality............................................................210
High impedance earthed systems........................................210
Direct earthed system..........................................................211
Settings for Two step residual overvoltage protection..........212
Overexcitation protection OEXPVPH ............................................213
Identification..............................................................................213
Application.................................................................................214
Setting guidelines......................................................................215
Recommendations for input and output signals...................215
Settings................................................................................215
100% Statorearth fault protection, 3rd harmonic based
STEFPHIZ......................................................................................216
Identification..............................................................................216
Application.................................................................................216
Setting guidelines......................................................................220
Rotor earth fault protection.............................................................222
Section 10 Frequency protection....................................................223Underfrequencyprotection SAPTUF .............................................223
Identification..............................................................................223
Application.................................................................................223
Setting guidelines......................................................................223
Overfrequency protection SAPTOF ...............................................224
Identification..............................................................................224
Application.................................................................................224
Setting guidelines......................................................................225
Rate-of-change frequency protection SAPFRC .............................225
Identification..............................................................................226
Application.................................................................................226
Setting guidelines......................................................................226
Section 11 Secondarysystem supervision.....................................229Fuse failure supervision SDDRFUF...............................................229
Identification..............................................................................229
Application.................................................................................229
Setting guidelines......................................................................230
General.................................................................................230
Setting of common parameters............................................230
Negative sequence based....................................................231
Zero sequence based...........................................................232
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Delta U and delta I ...............................................................232
Dead line detection...............................................................233
Breaker close/trip circuit monitoring TCSSCBR.............................233
Identification..............................................................................233Application.................................................................................233
Section 12 Control..........................................................................239Synchrocheck, energizing check, and synchronizing
SESRSYN......................................................................................239
Identification..............................................................................239
Application.................................................................................239
Synchronizing.......................................................................239
Synchrocheck.......................................................................240
Energizing check..................................................................242
Voltage selection..................................................................243
External fuse failure..............................................................244
Application examples.................................................................245
Singlecircuit breaker with single busbar..............................245
Single circuit breaker with double busbar, external
voltage selection...................................................................245
Single circuit breaker with double busbar, internal
voltage selection...................................................................246
Double circuit breaker..........................................................247
1 1/2 circuit breaker..............................................................248
Setting guidelines......................................................................250
Apparatus control ..........................................................................255
Identification..............................................................................255
Application.................................................................................255
Interaction between modules.....................................................258
Setting guidelines......................................................................260
Bay control (QCBAY)...........................................................260
Logic rotating switch for function selection and LHMI
presentation SLGGIO.....................................................................2 60
Identification..............................................................................260
Application.................................................................................260
Setting guidelines......................................................................261
Selector mini switch VSGGIO.........................................................261
Identification..............................................................................261
Application.................................................................................261
Setting guidelines......................................................................262
IEC61850 generic communication I/O functions DPGGIO.............262
Identification..............................................................................262
Application.................................................................................262
Setting guidelines......................................................................263
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Single point generic control 8 signals SPC8GGIO.........................263
Identification..............................................................................263
Application.................................................................................263
Setting guidelines......................................................................263Automation bits AUTOBITS............................................................264
Identification..............................................................................264
Application.................................................................................264
Setting guidelines......................................................................264
Section 13 Logic.............................................................................265Tripping logic common 3-phase output SMPPTRC .......................265
Identification..............................................................................265
Application.................................................................................265
Three-phase tripping ...........................................................265
Lock-out................................................................................266
Blocking of the function block...............................................266
Setting guidelines......................................................................266
Trip matrix logic TMAGGIO............................................................267
Identification..............................................................................267
Application.................................................................................267
Setting guidelines......................................................................267
Configurable logic blocks................................................................268
Identification..............................................................................268
Application.................................................................................269Configuration........................................................................269
Fixed signals FXDSIGN..................................................................270
Identification..............................................................................270
Application.................................................................................270
Boolean 16 to integer conversion B16I...........................................271
Identification..............................................................................271
Application.................................................................................271
Setting guidelines......................................................................272
Boolean 16 to integer conversion with logic node
representation B16IFCVI................................................................272
Identification..............................................................................272
Application.................................................................................272
Setting guidelines......................................................................272
Integer to boolean 16 conversion IB16A........................................272
Identification..............................................................................272
Application.................................................................................273
Setting guidelines......................................................................273
Integer to boolean 16 conversion with logic node
representation IB16FCVB...............................................................273
Identification..............................................................................273
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Application.................................................................................273
Settings......................................................................................273
Section 14 Monitoring.....................................................................275IEC61850 generic communication I/O functions SPGGIO.............275
Identification..............................................................................275
Application.................................................................................275
Setting guidelines......................................................................275
IEC61850 generic communication I/O functions 16 inputs
SP16GGIO.....................................................................................275
Identification..............................................................................275
Application.................................................................................275
Setting guidelines......................................................................276
IEC61850 generic communication I/O functions MVGGIO.............276
Identification..............................................................................276
Application.................................................................................276
Setting guidelines......................................................................276
Measurements................................................................................277
Identification..............................................................................277
Application.................................................................................277
Setting guidelines......................................................................279
Setting examples.......................................................................281
Measurement function application for a 400 kV OHL...........282
Measurement function application for a generator...............284
Event counter CNTGGIO................................................................286
Identification..............................................................................286
Application.................................................................................286
Setting guidelines......................................................................286
Disturbance report .........................................................................287
Identification..............................................................................287
Application.................................................................................287
Setting guidelines......................................................................288
Binary input signals..............................................................291
Analog input signals.............................................................291
Sub-function parameters......................................................292
Consideration.......................................................................292
Measured value expander block MVEXP.......................................293
Identification..............................................................................293
Application.................................................................................293
Setting guidelines......................................................................294
Station battery supervision SPVNZBAT.........................................294
Identification..............................................................................294
Application.................................................................................294
Insulation gas monitoring function SSIMG.....................................295
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Identification..............................................................................295
Application.................................................................................295
Insulation liquid monitoring function SSIML....................................295
Identification..............................................................................295Application.................................................................................295
Circuit breaker condition monitoring SSCBR..................................295
Identification..............................................................................295
Application.................................................................................296
Section 15 Metering.......................................................................299Pulse counter PCGGIO..................................................................299
Identification..............................................................................299
Application.................................................................................299
Setting guidelines......................................................................299
Energy calculation and demand handling EPTMMTR....................300
Identification..............................................................................300
Application.................................................................................300
Setting guidelines......................................................................301
Section 16 Station communication.................................................303IEC61850-8-1 communication protocol .........................................303
Identification..............................................................................303
Application.................................................................................303
Horizontal communication via GOOSE................................305
Setting guidelines......................................................................307
DNP3 protocol................................................................................307
IEC 60870-5-103 communication protocol.....................................308
Section 17 Basic IED functions......................................................309Self supervision with internal event list ..........................................309
Identification..............................................................................309
Application.................................................................................309
Time synchronization......................................................................310
Identification..............................................................................310
Application.................................................................................310Setting guidelines......................................................................311
Parameter setting group handling..................................................313
Identification..............................................................................313
Application.................................................................................313
Setting guidelines......................................................................314
Test mode functionality TESTMODE..............................................314
Identification..............................................................................314
Application.................................................................................314
Setting guidelines......................................................................314
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Change lock CHNGLCK.................................................................315
Identification..............................................................................315
Application.................................................................................315
Setting guidelines......................................................................316IED identifiers TERMINALID..........................................................316
Identification..............................................................................316
Application.................................................................................316
Customer specific settings...................................................316
Product information PRODINF.......................................................316
Identification..............................................................................316
Application.................................................................................317
Factory defined settings.......................................................317
Primary system values PRIMVAL...................................................318
Identification..............................................................................318Application.................................................................................318
Signal matrix for analog inputs SMAI.............................................318
Identification..............................................................................318
Application.................................................................................318
Setting guidelines......................................................................319
Summation block 3 phase 3PHSUM..............................................321
Identification..............................................................................321
Application.................................................................................321
Setting guidelines......................................................................322
Global base values GBASVAL.......................................................322Identification..............................................................................322
Application.................................................................................322
Setting guidelines......................................................................322
Authority check ATHCHCK.............................................................323
Identification..............................................................................323
Application.................................................................................323
Authorization handling in the IED.........................................323
Authority status ATHSTAT.............................................................324
Identification..............................................................................324
Application.................................................................................324Denial of service.............................................................................325
Identification..............................................................................325
Application.................................................................................325
Setting guidelines......................................................................325
Section 18 Requirements...............................................................327Current transformer requirements..................................................327
Current transformer classification..............................................327
Conditions..................................................................................328
Fault current..............................................................................329
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Secondary wire resistance and additional load.........................329
General current transformer requirements................................329
Rated equivalent secondary e.m.f. requirements......................330
Transformer differential protection.......................................3301 Ph high impedance differential protection.........................331
Breaker failure protection.....................................................332
Non-directional instantaneous and definitive time, phase
and residual overcurrent protection......................................332
Non-directional inverse time delayed phase and residual
overcurrent protection..........................................................333
Directional phase and residual overcurrent protection.........334
Current transformer requirements for CTs according to
other standards..........................................................................335
Current transformers according to IEC 60044-1,
class P, PR...........................................................................335
Current transformers according to IEC 60044-1, class
PX, IEC 60044-6, class TPS
(and old British Standard, class X).......................................335
Current transformers according to ANSI/IEEE.....................335
Voltage transformer requirements..................................................336
SNTP server requirements.............................................................337
SNTP server requirements........................................................337
Section 19 Glossary.......................................................................339
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Section 1 Introduction
1.1 This manualThe application manual contains application descriptions and setting guidelinessorted per function. The manual can be used to find out when and for what purposea typical protection function can be used. The manual can also be used whencalculating settings.
1.2 Intended audienceThis manual addresses the protection and control engineer responsible for
planning, pre-engineering and engineering.
The protection and control engineer must be experienced in electrical powerengineering and have knowledge of related technology, such as protection schemesand communication principles.
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1.3 Product documentation1.3.1 Product documentation set
Planning&purchase
Engineering
Installing
Commissioning
Operation
Maintenance
Decommissioning
deinstalling&disposal
Application manual
Operation manual
Installation manual
Service manual
Engineering manual
Commissioning manual
Communication protocolmanual
Technical manual
Planning&purchase
Engineering
Installing
Commissioning
Operation
Maintenance
Decommissioning
deinstalling&disposal
Planning&purchase
Engineering
Installing
Commissioning
Operation
Maintenance
Decommissioning
deinstalling&disposal
Application manualApplication manual
Operation manualOperation manual
Installation manualInstallation manual
Service manualService manual
Engineering manualEngineering manual
Commissioning manualCommissioning manual
Communication protocolmanualCommunication protocolmanual
Technical manualTechnical manual
en07000220.vsd
IEC07000220 V1 EN
Figure 1: The intended use of manuals in different lifecycles
The engineering manual contains instructions on how to engineer the IEDs usingthe different tools in PCM600. The manual provides instructions on how to set up aPCM600 project and insert IEDs to the project structure. The manual alsorecommends a sequence for engineering of protection and control functions, LHMI
functions as well as communication engineering for IEC 60870-5-103, IEC 61850and DNP3.
The installation manual contains instructions on how to install the IED. Themanual provides procedures for mechanical and electrical installation. The chaptersare organized in chronological order in which the IED should be installed.
The commissioning manual contains instructions on how to commission the IED.The manual can also be used by system engineers and maintenance personnel forassistance during the testing phase. The manual provides procedures for checkingof external circuitry and energizing the IED, parameter setting and configuration as
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well as verifying settings by secondary injection. The manual describes the processof testing an IED in a substation which is not in service. The chapters are organizedin chronological order in which the IED should be commissioned.
The operation manual contains instructions on how to operate the IED once it hasbeen commissioned. The manual provides instructions for monitoring, controllingand setting the IED. The manual also describes how to identify disturbances andhow to view calculated and measured power grid data to determine the cause of afault.
The service manual contains instructions on how to service and maintain the IED.The manual also provides procedures for de-energizing, de-commissioning anddisposal of the IED.
The application manual contains application descriptions and setting guidelinessorted per function. The manual can be used to find out when and for what purposea typical protection function can be used. The manual can also be used whencalculating settings.
The technical manual contains application and functionality descriptions and listsfunction blocks, logic diagrams, input and output signals, setting parameters andtechnical data sorted per function. The manual can be used as a technical referenceduring the engineering phase, installation and commissioning phase, and duringnormal service.
The communication protocol manual describes a communication protocolsupported by the IED. The manual concentrates on vendor-specific implementations.
The point list manual describes the outlook and properties of the data pointsspecific to the IED. The manual should be used in conjunction with thecorresponding communication protocol manual.
1.3.2 Document revision historyDocument revision/date History-/June 2012 First release
1.3.3 Related documentsDocuments related to REG650 Identity numberApplication manual 1MRK 502 042-UEN
Technical manual 1MRK 502 043-UEN
Commissioning manual 1MRK 502 044-UEN
Product Guide 1MRK 502 045-BEN
Type test certificate 1MRK 502 045-TEN
Rotor Earth Fault Protection with Injection Unit RXTTE4 and REG670 1MRG001910
Application notes for Circuit Breaker Control 1MRG006806
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650 series manuals Identity numberCommunication protocol manual, DNP3 1MRK 511 257-UEN
Communication protocol manual, IEC 6185081 1MRK 511 258-UEN
Communication protocol manual, IEC 60870-5-103 1MRK 511 259-UEN
Cyber Security deployment guidelines 1MRK 511 268-UEN
Point list manual, DNP3 1MRK 511 260-UEN
Engineering manual 1MRK 511 261-UEN
Operation manual 1MRK 500 095-UEN
Installation manual 1MRK 514 015-UEN
1.4 Symbols and conventions1.4.1 Symbols
The electrical warning icon indicates the presence of a hazardwhich could result in electrical shock.
The warning icon indicates the presence of a hazard which couldresult in personal injury.
The caution icon indicates important information or warning relatedto the concept discussed in the text. It might indicate the presenceof a hazard which could result in corruption of software or damageto equipment or property.
The information icon alerts the reader of important facts andconditions.
The tip icon indicates advice on, for example, how to design yourproject or how to use a certain function.
Although warning hazards are related to personal injury, it is necessary tounderstand that under certain operational conditions, operation of damagedequipment may result in degraded process performance leading to personal injuryor death. Therefore, comply fully with all warning and caution notices.
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1.4.2 Document conventionsA particular convention may not be used in this manual.
Abbreviations and acronyms in this manual are spelled out in the glossary. Theglossary also contains definitions of important terms.
Push button navigation in the LHMI menu structure is presented by using thepush button icons.To navigate between the options, use and .
HMI menu paths are presented in bold.Select Main menu/Settings.
LHMI messages are shown in Courier font.To save the changes in non-volatile memory, select Yesand press .
Parameter names are shown in italics.The function can be enabled and disabled with the Operationsetting.
The ^ character in front of an input or output signal name in the function blocksymbol given for a function, indicates that the user can set an own signal namein PCM600.
The * character after an input or output signal name in the function blocksymbol given for a function, indicates that the signal must be connected toanother function block in the application configuration to achieve a validapplication configuration.
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Section 2 Application
2.1 REG650 applicationREG650 is used for the protection and monitoring of generating plants. The IED isespecially suitable for applications in distributed control systems with highdemands on reliability. It is intended mainly for small and medium size generationstations.
REG670 may be used when more extensive protection systems are required or in
combination with REG650 to provide redundant schemes.
A wide range of protection functions is available to achieve full and reliableprotection for different types of generating plants, for example hydro power plantsand thermal power plants. This enables adaptation to the protection requirements ofmost generating plants.
Protection functions are available for detecting and clearing internal faults, such asgenerator stator short circuits and earth faults, generator rotor earth faults, unittransformer short circuits and earth faults and faults in the external power system,fed from the generating plant.
Two packages have been defined for the following applications:
Generator protection IED including generator differential protection (B01) Generator-transformer unit protection IED including transformer differential
protection (B05)
In many generating plants, the protection system can be designed with acombination of the two packages, that is, two IEDs of either same type or differenttypes, will give redundant protection for a generating unit (generator and unittransformer) depending on the requirements for the plant design.
The packages are configured and ready for use. Analogue inputs and binary input/output circuits are pre-defined.
The pre-configured IED can be changed and adapted with the graphicalconfiguration tool.
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A, B, C or D
~
59N UN>
STEF PHIZ
59THD U3d/N
REG650-B01
TR PTTR
49 Ith
LEX PDIS
40
OEX PVPH
24 U/f>
UV2 PTUV
27 3U
OC4 PTOC
51 3I>
GEN PDIF
87G 3Id/I
SA PTUF
81U f/U
OC4 PTOC
51 3I>
CC RPLD
52PD PD
CC RBRF
50BF 3I> BF
YY
Generator CB
AuxiliaryTransformer
UnitTransformer
29MVA121/11kV
YNd5
ExcitationTransformer
HV CB
ROV2 PTOV
59N 3Uo>
TR PTTR
49 Ith
OOSPPAM
78 Ucos
SESRSYN
25 SC
1)
2)
3)
3) Input for independent directional (sensitive) EF function. It can be used for different purposes.
(e.g. as rotor EF with RXTTE4 or stator EF for generators operating in parallel)
FieldCB
HZ PDIF
87N IdN
2)Input for independent non-directional EF function. It can be used for different purposes (e.g. as stator EF protection or turn-to-turn protection for generators with split winding or even HV sideEF protection). Alternatively it can be used for High-Impedance REF protection.
ROV2 PTOV
59N 3Uo>
CV MMXN
Meter.
GUP PDOP
32
GOP PDUP
37 P
EF4 PTOC
67N
SDEPSDE
67N
Rotor EF protection 64R
GUP PDOP
32Q
SA PFRC
81R df/dt
390kVA11/0.37kV
Dyn11
50/5
1600/5
1600/5
10/1
1.6MVA11/0.4kV
EF4 PTOC
51N IN>
11 0.11 0.11/ /
33 3kV
11 0.11 0.11/ /
33 3kV
11 / 0.113
kV
200/1
100/52500/5
1000
29MVA11kV
150rpm
RXTTE4
D
C B
A
H J, G or H
200/5
G
Y200/1
J
C MSQI
Meter.
IEC10000299-2-en.vsd
Q
P
IN> IN>
UV2 PTUV
27 3U
T3DPDIF
87T 3Id/I
SA PTUF
81U f/ U
OC4 PTOC
51 3I>
CC RPLD
52PD PD
CC RBRF
50BF 3I> BF
YY
Generator CB
HV CB
ROV2 PTOV
59N 3Uo>
TR PTTR
49 Ith
OOSPPAM
78 Ucos
SESRSYN
25 SC
Note:
2)Input for independent non-directional EF function. It can be used for different purposes (e.g. as stator EF protection or turn-to-turn protection for gene rators with split winding or even HV
side EF protection). Alternatively it can be used for High-Impedance REF protection.
1)Inputs for independent directional (sensitive) E F function. It can be used for different purposes
(e.g. as rotor EF with RXTTE4 or stator EF for generators running in parallel)
1)
2)
FieldCB
TR PTTR
49 Ith
OC4 PTOC
51 3I>
HZ PDIF
87N IdN
EF4 PTOC
51N IN>
GT01
ROV2 PTOV
59N 3Uo>
59N UN>
YY
CV MMXN
Meter.
GOP PDUP
37 P
EF4 PTOC
67N
SDEPSDE
67N
Rotor EF protection 64R
CV MMXN
Meter.
GOP PDOP
32Q
SA PFRC
81R df/dt
3)
3)Alternatively step-up transformer HV side open delta VT can be connected here
Generator CB
Auxiliary
Transformer
Unit
Transformer
29MVA
121/11kVYNd5
ExcitationTransformer
390kVA
11/0.37kV
Dyn11
50/5
1600/5
29MVA
11kV
150rpm
200/1
100/5
1.6MVA
11/0.4kV
11 0.11 0.11/ /
33 3kV
110 0.11 0.11/ /
33 3kV
11/ 0.11
3kV
2500/5
1000
RXTTE4
C
B
E
A
D
A or B
D or E
200/5
G
1600/5
10/1H J, G or H
Y200/1
J
SDD RFUF
60FL
C MSQI
Meter.
IEC10000300-2-en.vsd
IN> IN>
Q
P
On On On On
Two step residual overvoltage ProtectionROV2PTOV , U0>, instance 1
OnGen Term
OnGen Term
OnGen Neutr point
OnGen Neutr point
Two step residual overvoltage ProtectionROV2PTOV , U0>, instance 2
OnT sec side
OnT sec side
OnT sec side
OnT HV neutr point
Overexcitation protection OEXPVPH On On On On
100% Stator earth fault protection, 3rd harmonicbased STEFPHIZ / 95 % fundamental based
On On Applicationdependent
Applicationdependent
Underfrequency protection SAPTUF , instance 1 On On On On
Underfrequency protection SAPTUF, instance 2 Off Off Off Off
Underfrequency protection SAPTUF, instance 3 Off Off Off Off
Underfrequency protection SAPTUF, instance 4 Off Off Off Off
Overfrequency protection SAPTOF, instance 1 On On On On
Overfrequency protection SAPTOF, instance 2 Off Off Off Off
Overfrequency protection SAPTOF, instance 3 Off Off Off Off
Overfrequency protection SAPTOF, instance 4 Off Off Off Off
Table continues on next page
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Function Application 1 Application 2 Application 3 Application 4Rate-of-change frequency protection SAPFRC,instance 1
Applicationdependent
Applicationdependent
Applicationdependent
Applicationdependent
Rate-of-change frequency protection SAPFRC ,
instance 2
Off Off Off Off
Synchrocheck, energizing check, and synchronizingSESRSYN
Applicationdependent
Applicationdependent
Applicationdependent
Applicationdependent
1) The generator should have reverse power protection. If the generator consumes low reverse power at motor operation (< 1 % of SN),
low forward power protection should be used. In other cases, reverse power protection should be used.2) Voltage-restrained time overcurrent protection add (VR2PVOC) can be used instead of the underimpedance protection.
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2.3.1.6 Single generator/transformer unit, connected to a solidly earthedHigh Voltage (HV) system, with redundant protection
REG650 (B01)
3
3
3
3
1
1
3
1
1
3
Aux
Rotor
DC
Rotor EF
injection
IinjUinj
REG650 (B05)
IEC10000128-1-en.vsd
IEC10000128 V1 EN
Figure 8: Single generator/transformer unit, connected to a solidly earthed
High Voltage (HV) system, with redundant protection
REG650 (B01) is used as the main protection for the generator and REG650 (B05)is used as the main protection for the unit transformer and as back-up protection forthe generator. The combination of the protections also gives redundant protectionfor the auxiliary system transformer.
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Table 6: Data for the generator application exam pleParameter ValueGenerator rated voltage (UN,Gen) 1 20 kV
Transformer high voltage side rated voltage (UN,THV)
11 220 kV
Generator rated power (SN) 1 150 MVA
Short circuit power level infeed at HV-side 500 10000 MVA
2.3.1.7 Single generator/transformer unit, connected to a high impedanceearthed High Voltage (HV) system, with redundant protection
REG650 (B01)
3
3
3
3
1
1
3
1
3
Aux
Rotor
DC
Rotor EF
injection
IinjUinj
REG650 (B05)
1
IEC10000129-1-en.vsd
IEC10000129 V1 EN
Figure 9: Single generator/transformer unit, connected to a high impedance
earthed High Voltage (HV) system, with redundant protection
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REG650 (B01) is used as the main protection for the generator and REG650 (B05)is used as the main protection for the unit transformer and as back-up protection forthe generator. The combination of the protections also gives redundant protectionfor the auxiliary system transformer.
Table 7: Data for the generator application exam pleParameter ValueGenerator rated voltage (UN,Gen) 1 20 kV
Transformer high voltage side rated voltage (UN,
THV)
11 220 kV
Generator rated power (SN) 1 150 MV
Short circuit power level infeed at HV-side 500 5000 MVA
2.3.1.8 Two generators having one three-winding unit transformer,connected to a solidly earthed High Voltage (HV) system, withredundant protection with unit differential protection including thegeneratorsREG650 (B05)
3
3
3
1
1
3
1
3
3
3
1
1
1
3
1
3
Rotor
DC
Rotor EF
injection
IinjUinj
REG650 (B01)
Aux
Rotor
DC
Rotor EF
injection
IinjUinj
REG650 (B01)
3
Aux
IEC10000130-1-en.vsd
IEC10000130 V1 EN
Figure 10: Two generators having one three-winding unit transformer,
connected to a solidly earthed High Voltage (HV) system, with
redundant protection with unit differential protection including the
generators
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REG650 (B01) is used as the main protection for the generator and REG650 (B05)is used as the main protection for the unit transformer and as back-up protection forthe generator. The combination of the protections also gives redundant protectionfor the auxiliary system transformer.
Table 8: Data for the generator application exam pleParameter ValueGenerator rated voltage (UN,Gen) 1 20 kV
Transformer high voltage side rated voltage (UN,
THV)
11 220 kV
Generator rated power (SN) 1 150 MVA
Short circuit power level infeed at HV-side 500 10000 MVA
2.3.1.9 Two generators having one three-winding unit transformer,connected to a solidly earthed High Voltage (HV) system, withredundant protection with unit transformer differential protectionREG650 (B05)
3
3
3
1
1
3
1
3
3
3
1
1
1
3
1
3
Rotor
DC
Rotor EF
injection
IinjUinj
REG650 (B01)
Aux
Rotor
DC
Rotor EF
injection
IinjUinj
REG650 (B01)
3
Aux
IEC10000131-1-en.vsd
IEC10000131 V1 EN
Figure 11: Two generators having one three-winding unit transformer,
connected to a solidly earthed High Voltage (HV) system, with
redundant protection with unit transformer differential protection
REG650 (B01) is used as the main protection for the generator and REG650 (B05)is used as the main protection for the unit transformer and as back-up protection for
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the generator. The combination of the protections also gives redundant protectionfor the auxiliary system transformer.
Table 9: Data for the generator application exam pleParameter ValueGenerator rated voltage (UN,Gen) 1 20 kV
Transformer high voltage side rated voltage (UN,
THV)
11 220 kV
Generator rated power (SN) 1 150 MVA
Short circuit power level infeed at HV-side 500 10000 MVA
2.3.1.10 Functionality tableThe proposal for functionality choice for the different application cases are shownin table 10.
The recommendations have the following meaning:
On: It is recommended to have the function activated in the application. Off: It is recommended to have the function deactivated in the application. Application dependent: The decision to have the function activated or not is
dependent on the specific conditions in each case.
Application 5 8 in table10are according to application examples
given in previous sections.
Tab le 10: Recommended funct ions in the d if fe rent app li ca tion examp lesFunction Application 5 Application 6 Application 7 Application 8Generator differential protection GENPDIF (B01) On On On On
Transformer differential protection T3WPDIF (B05) On On On On
1Ph High impedance differential protection HZPDIF Applicationdependent
Applicationdependent
Applicationdependent
Applicationdependent
Underimpedance protection for generators andtransformers ZGCPDIS (B01)
On On On On
Underimpedance protection for generators andtransformers ZGCPDIS (B05)
Off Off Off Off
Load encroachment LEPDIS Applicationdependent
Applicationdependent
Applicationdependent
Applicationdependent
Out-of-step protection OOSPPAM (B01) On On On On
Out-of-step protection OOSPPAM (B05) Off Off Off Off
Loss of excitation (underexcitation) protectionLEXPDIS (A01)
On On On On
Loss of excitation (underexcitation) protectionLEXPDIS (B05)
Off Off Off Off
Table continues on next page
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Function Application 5 Application 6 Application 7 Application 8Four step phase overcurrent protection OC4PTOC ,instance 1 (B01)
OnAux T
OnAux T
OnAux T
OnAux T
Four step phase overcurrent protection OC4PTOC ,
instance 1 (B05)
On On On On
Four step phase overcurrent protection OC4PTOC ,instance 2
Off Off Off Off
Four step residual overcurrent protection EF4PTOC ,instance 1 (B01)
Off Off Off Off
Four step residual overcurrent protection EF4PTOC ,instance 1 (B05)
OnT HV
OnT HV
OnT HV
OnT HV
Four step residual overcurrent protection EF4PTOC ,instance 2
Off Off Off Off
Sensitive directional residual overcurrent and powerprotection SDEPSDE (B01)
OnRotor EF
OnRotor EF
OnRotor EF
OnRotor EF
Sensitive directional residual overcurrent and power
protection SDEPSDE (B05)
Off Off Off Off
Thermal overload protection TRPTTR , instance 1 On On On On
Thermal overload protection TRPTTR , instance 2 Off Off Off Off
Breaker failure protection CCRBRF (B01) On On On On
Breaker failure protection CCRBRF (B05) OnHV CB
OnHV CB
OnHV CB
OnHV CB
Pole discordance protection CCRPLD Applicationdependent
Applicationdependent
Applicationdependent
Applicationdependent
Directional under-power protection GUPPDUP (lowforward power protection), (B01)
1) 1) 1) 1)
Directional underpower protection GUPPDUP (Low
forward power protection), (B05)
Off Off Off Off
Directional overpower protection GOPPDOP ,instance 1 (reverse power protection), (B01)
1) 1) 1) 1)
Directional overpower protection GOPPDOP ,instance 1 (reverse power protection), (B05)
Off Off Off Off
Directional overpower protection GOPPDOP ,instance 2
Off Off Off Off
Accidental energizing protection for synchronousgenerator AEGGAPC (B01)
On On On On
Accidental energizing protection for synchronousgenerator AEGGAPC (B05)
Off Off Off Off
Negative-sequence time overcurrent protection formachines NS2PTOC On On On On
Voltage-restrained time overcurrent protectionVR2PVOC (B01)
2) 2) 2) 2)
Voltage-restrained time overcurrent protectionVR2PVOC (B05)
Off Off Off Off
Two step undervoltage protection UV2PTUV , U< On On On On
Two step overvoltage protection OV2PTOV , U> On On On On
Two step residual overvoltage protectionROV2PTOV , U0>, instance 1 (B01)
OnGen Neutr point
OnGen Neutr point
OnGen Neutr point
OnGen Neutr point
Table continues on next page
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Function Application 5 Application 6 Application 7 Application 8Two step residual overvoltage protectionROV2PTOV , U0>, instance 1 (B05)
OnT sec side
OnT sec side
OnT sec side
OnT sec side
Two step Residual Overvoltage Protection
ROV2PTOV , U0>, instance 2 (B01)
On
Gen Term
On
Gen Term
On
Gen Term
On
Gen Term
Two step residual overvoltage protectionROV2PTOV , U0>, instance 2 (B05)
Off OnT HV neutr point
OnT sec side 2
OnT sec side 2
Overexcitation protection OEXPVPH On On On On
100% Stator earth fault protection, 3rd harmonicbased STEFPHIZ / 95 % fundamental based (B01)
On On On On
100% Stator earth fault protection, 3rd harmonicbased STEFPHIZ / 95 % fundamental based (B05)
Off Off Off Off
Underfrequency protection SAPTUF , instance 1 On On On On
Underfrequency protection SAPTUF , instance 2 Off Off Off Off
Underfrequency protection SAPTUF, instance 3 Off Off Off Off
Underfrequency protection SAPTUF, instance 4 Off Off Off Off
Overfrequency protection SAPTOF, instance 1 On On On On
Overfrequency protection SAPTOF, instance 2 Off Off Off Off
Overfrequency protection SAPTOF, instance 3 Off Off Off Off
Overfrequency protection SAPTOF, instance 4 Off Off Off Off
Rate-of-change frequency protection SAPFRC,instance 1
Applicationdependent
Applicationdependent
Applicationdependent
Applicationdependent
Rate-of-change frequency protection SAPFRC,instance 2
Off Off Off Off
Synchrocheck, energizing check, and synchronizingSESRSYN(B01)
Applicationdependent
Applicationdependent
Applicationdependent
Applicationdependent
Synchrocheck, energizing check, and synchronizingSESRSYN (B05)
Off Off Off Off
1) The generator should have reverse power protection. If the generator consumes low reverse power at motor operation (< 1 % of SN),
low forward power protection should be used. In other cases, reverse power protection should be used.2) Voltage-restrained time overcurrent protection add (VR2PVOC) can be used instead of the underimpedance protection.
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Section 3 REG650 setting examples
The application example has a generation unit protected by one REG650 B01(Main 1) and one REG650 B05 (Main 2) as shown in figure 12.
REG650 (B01)
3
3
3
3
1
1
3
1
1
3
Aux
Rotor
DC
Rotor EF
injection
IinjUinj
REG650 (B05)
145 kV
IEC10000155-1-en.vsd
IEC10000155 V1 EN
Figure 12: Power plant protection application
The following data is assumed:
Table 11: Data for the unit transformerItem DataTransformer rated power SN 25 MVA
Transformer high voltage side rated voltage UN1 145 kV
Transformer low voltage side rated voltage UN2 10.5 kV
Transformer vector group YNd11
Table continues on next page
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Item DataTransformer short circuit voltage ek 12 %
Maximum allowed continuous overload 1.30 * SN
Phase CT ratio at 145 kV level 150/1 A
CT at 145 kV earth point 150/1 A
Phase CT ratio at 10 kV level 1500/1 A
10 kV VT ratio 11 0 11 0 11kv
33 3
. ./ /
High Positive sequence source impedance at theHV side
10 ohm (about 2100 MVA) with a phase angle 85
High Zero sequence source impedance at theHV side
j20 ohm
Table 12: Data for the generatorItem DataGenerator rated power SN 25 MVA
Generator rated voltage UN 10.5 kV kV
Rate power factor cosn 0.90
xd 1.0 per unit (pu)
xd 0.4 pu
xd 0.25 pu
Phase CT ratio at generator terminal side 1500/1 APhase CT ratio at generator neutral point side 1500/1 A
Generator neutral point VT ratio 110.11 kV
3/
Generator 10 kV terminal VT ratio 11 0 11 0 11kV
33 3
. ./ /
Table 13: Data for the auxiliary transform erItem DataTransformer rated power SN 1.0 MVA
Transformer high voltage side rated voltage UN1 10.5 kV
Transformer low voltage side rated voltage UN2 0.4 kV
Transformer vector group Dyn5
Transformer short circuit voltage ek 4 %
Phase CT ratio at 10.5 kV level 100/1 A
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Only settings that need adjustment due to the specific applicationare described in setting examples. It is recommended to keep thedefault values for all settings that are not described. Refer toTechnical manual for setting tables for each protection and controlfunction.
Refer to setting guideline section in Application manual forguidelines on how to set functions that are not presented in settingexamples.
Use parameter setting tool in PCM600 to set the IED according tocalculations for the particular application.
3.1 Calculating general settings for analogue TRMinputs 4I 1I 5UThe transformer module (TRM) has the capability of 4 current inputs (tapped to 1or 5 A), 1 current input (tapped to 0.1 or 0.5 A) and 5 voltage inputs.
The generator neutral point phase CTs (three-phase current transformer group) areconnected to inputs 1 3 (L1, L2 and L3).
The generator neutral point CT can be connected to input 4 (not used here).
The rotor earth fault current measurement is connected to input 5.
The generator terminal side phase VT is connected to inputs 6 - 8 (L1, L2 and L3).
The generator neutral point VT is connected to input 9.
The rotor earth fault voltage measurement is connected to input 10.
1. Set the current transformer inputs.1.1. Set CTStarPoint1to To Object.
The CT secondary is earthed towards the transformer.1.2. Set CTSec1to 1 A.
(The rated secondary current of the CT)1.3. Set CTPrim1to 1500 A.
(The rated primary current of the CT)1.4. Set the same values for current inputs 2 and 3.1.5. Set CTStarPoint4to.1.6. Set CTSec4to.
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1.7. Set CTPrim4to.1.8. Set CTStarPoint5to To Object.1.9. Set CTSec5to 1 A.1.10. Set CTPrim5to 1000 A.
2. Set the voltage transformer inputs.
2.1. Set VTSec6to 110 V.(The rated secondary voltage of the VT, given as phase-to-phase voltage)
2.2. Set VTPrim6to 11 kV.(The rated secondary voltage of the VT, given as phase-to-phase voltage)
2.3. Set the same values for current inputs 7 and 8.2.4. Set VTSec9to 110 V.
(The rated secondary voltage of the VT)2.5. Set VTPrim9to 6.35 kV.
This gives equivalent of ratio
110.11 kV
3/
EQUATION2379 V1 EN
2.6. Set VTSec10to 120 V.2.7. Set VTPrim10to 120 kV.
3.2 Calculating general settings for analogue AIMinputs 6I 4UThe analogue input module (AIM) has the capability of 6 current inputs (tapped to1 or 5 A) and 4 voltage inputs.
The generator terminal side phase CTs (three-phase current transformer group) areconnected to inputs 1 3 (L1, L2 and L3).
The auxiliary transformer 10 kV phase CTs (three-phase current transformergroup) are connected to inputs 4 6 (L1, L2 and L3).
The transformer 10 kV phase VT is connected to inputs 7 - 9 (L1, L2 and L3).
The generator terminal side open delta VT is connected to input 10.
1. Set the current transformer inputs.
1.1. Set CTStarPoint1to To Object.The CT secondary is earthed towards the transformer.
1.2. Set CTSec1to 1 A.(The rated secondary current of the CT)
1.3. Set CTPrim1to 1500 A.
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(The rated primary current of the CT)1.4. Set the same values for current inputs 2 and 3.1.5. Set CTStarPoint4to To Object.
The CT secondary is earthed towards the bus transformer.1.6. Set CTSec4to 1 A.
(The rated secondary current of the CT)1.7. Set CTPrim4to 100 A.
(The rated primary current of the CT)1.8. Set the same values for current inputs 5 and 6.
2. Set the voltage transformer inputs.
2.1. Set VTSec7to 110 V(The rated secondary voltage of the VT, given as phase-to-phase voltage)
2.2. Set VTPrim7to 11 kV.(The rated secondary voltage of the VT, given as phase-to-phase voltage)
2.3. Set the same values for current inputs 8 and 9.3. Set VTSec10to 110 V.
(The rated secondary voltage of the VT multiplied by 3)4. Set VTPrim10to 19.05 kV.
This gives equivalent of ratio
11 0 11kv
33
./
EQUATION2355 V1 EN
3.3 Preprocessing blocks SMAIMany of the protection functions must be enabled to operate also during generatorrun-up, i.e. in circumstances where the