Scad A

SCADA & RTU

SUPERVISORY CONTROL AND DATA ACQUISITION &

REMOTE TERMINAL UNIT

• Supervision• Control• Data Acquisition

Supervisory Control and Data Acquisition System (SCADA)

• ADVANTAGES• TIME SYNCHRONISATION WITH GPS IN ENTIRE WESTERN

REGION• VIEWING OF REAL TIME DATA• SUPERVISORY CONTROL• ALARMS FOR ANY ABNORMAL CONDITION IN THE SYSTEM• SYSTEM STUDIES CAN BE PERFORMED• PLANNING OF ELECTRICAL POWER POSITION IN THE STATE• USER FRIENDLY REPORT GENERATION• WEB INTEGRATION• ENERGY MANAGEMENT


• Disadvantages• SKILLED PERSONNEL ARE REQUIRED TO

OPERATE THE SYSTEM• INITIAL COST HIGH• PARTIALLY IMPLIMENTED OPEN SYSTEM

ARCHITECTURE• PROTOCOLS FOR CERTAIN DATA COLLECTION

ARE YET TO BE STANDARDISED


Analog Input Process Digital Out put /Control Input

Digital Input


Basic SCADA Process

Switches


• SCADA Process classified into three parts1.Input

• Analog : Continuous Electrical Signals i.e. Active Power (MW), Reactive Power(MVAR), Voltage (KV), Frequency (Hz).etc..

• Digital : Switching Signals High(1) or Low(0) Signal i.e. Breaker Close(high) or Open(low), Isolator Closed(high) or Open(low).


2.Process• The signals are converted into digital format• Implement protocol between Master and Slave• It operates with Real Time Operating System (RTO)

3.Output• THE RESULTS ARE EXPOSED WITH USER FRIENDLY

ENVIRONMENT• THROUGH DISPLAYS CAN BE POSSIBLE TO CONTROL

THE SUBSTATION AND GENERATING STATION.

• Communication

DIFFERENT TYPES OF COMMUNICATION MEDIUM FOR SCADA

The various parameters used for RTU under GE SCADA Device Number Device Name Device sub type lecDevice group Number 1Dialup NoResponse Turnaround 40Default channel network delay 100Number trip close sessions 4lec Network Point to pointlecRtu address 1leclink layer Unbalancedlec Max User Frame length 255lecLLAddr filed length 1 OctetslecASDU Addr filed length 1 OctetslecObj Addr filed length 2 OctetslecTransmission filed length 1 OctetslecFunction Ref name Iec DefaultDevice control point Ref Number

Device AddressAt that time of introgation

given by ALDCDevice Premark Timer 45No reply limit 5Invalid Replay limit 5Error Dead band 3Error period 60Allowed Error rate 0.4Baud rate 300COT 1 Octets

Interrogation group for Analog* group 3,M_ME_NA,Class-3

Interrogation group for Status group 2,M_DP_TA,Class-2Clock Synchronisation YesStarting Address for Analog 3016Starting Address for Status(Binary) 2001

Comm. Port Settings

Comm Port 1,2,3,etc…

Baud Rate300/600/…../

19200Start Bit 8Stop Bit 1Parity EvenFlow Control NonFIFO* Disabale

Pin Configuration for Gateway to ModemCommunication Cable No.1

Pin Discription

DB-9 (Gateway

side)DB-25

(Modem side)RxD Pin -2 Pin -3TxD Pin -3 Pin -2Gnd Pin -5 Pin -7RTS Pin -7 Pin -4CTS Pin -8 Pin -5

ORCommunication Cable No.2

Pin Discription

DB-9 (Gateway

side)V9LA in PLCC Panel - TB-305

RxD Pin -2 7aTxD Pin -3 7bGnd Pin -5 5bRTS Pin -7 6aCTS Pin -8 6b

Iec-101 Parameters for Master/Slave Configuration & Pin Configuration for Communication (SCADA)

CT

PT

Transducer

MW,MVAR

Transducer

Votage,

Frequency

CMR

CMR

D20

Processor

Status Card

Control Card

Analog Card

RTUR

S

2

3

2

C

o

m

m

u

n

i

c

a

t

i

o

n

p

o

r

t

MODEM

MUXOFC/MICROWA

VE

PLCC

COMMUNICATION

Area Load Despatch Center

CB Isolator

Substation / RTU Location


Area Load Dispatch Center (ALDC)


OFC/MICROWA

VE

PLCC

MUXMODEM

Operating System

SCC

RCC

Front End Processor (FEP)

R

J

4

5

L

A

N

C

o

n

n

e

c

t

i

o

n

10/100MBPS HUB

ROUTER

OFC WIDE

BANK

COMMUNICATI

ON

State Load Dispatch Center

AP 01 AP 02Work Stations / Servers

LOCAL AREA NETWORK

ALDC,Jetpur

10/100 MBPS HUB

10/100 MBPS HUB

ROUTER(2)

MUX(2)

OFC WIDE BANK COMMUNICATION

OFC WIDE BANK COMMUNICATION

State Load Dispatch Center RSCC

REAL TIME HARDWARE POSITION WITH SCADA SYSTEM

AREA LOAD DESPATCH CENTER,JETPUR

SOFTWARE REPRESENTATION OF REAL TIME HADWARE POSITION

ALDC,JetpurAREA LOAD DESPATCH CENTER,JETPUR

ALDC,Jetpur

NLDC

NRLDC ERLDC WRLDC SRLDC NERLDC

CHHATTISGADH MSEB MADHYA PRADESH GOA

CONTROL FLOW PATH FROM TOP TO BOTTOM

GUJARAT

ALDCs

SLDCs

RLDCs

RTUs

JAMBUVA JETPUR GANDHINAGAR

32 nos-ONLINE1 Nos.-w.u.p.

Kutch Area RTUs Reporting to ALDC-JETPUR

ALDC,Jetpur

400KV HADALA

220KV S'LAKHA

132KV S'KHIYALI

220KV WELSPUN

220KV SUTHARI

ANJAR MUX

220KV SINDHODI

220KV ADANI(APL)66KV

PRAGPAR

400KV ADANI

220KV N'KAHAR

220KV TAPPAR

ALDC-JETPUR

220KV N'KHAKHR

220KV TAPPAR

220KV KUKMA

400KV VARSANA

400KV S/S RTU

200KV S/S RTU

132KV S/S RTU

TRANSIT

2MBPS L/L

MUTIPLEXER

Radio link

400KV PLCC link

220KV PLCC link

2 Mbps Lease line

GSM/GPRS link

Saurastra Area RTUs Reporting to ALDC-JETPUR

ALDC,Jetpur

ALDC JETPUR

132KV SIKKA

220KV KESHOD

400KV AMRELI

220KV J'NAGAR

220KV TIMBDI 220KV

D'KADVA

400KV JETPUR

220KV S'KUNDLA

220KV VARTEJ

220KV S'KUNDLA

220KV GONDAL

220 RAJKOT

220KV RANAVAV

400KV CHORANIA

400KV HADALA

220KV V'VADAR

220KV MORBI220KV

D'GDHRA 66KV UNA

220KV LIMBDI

220KV M'PANELI

132KV BHATIA

132KV Varsamedi

132KV RELIANCE

220KV ESSAR OIL

220KV SARDARGADH

220KV KOVAYA

220KV SAGAPAR

220KV VARTEJ

220KV VARTEJ

220KV GSPC

400KV ESSAR POWER

RTUs Reporting to ALDC-JETPUR

ALDC,Jetpur

Sr.No. RTUs Under Saurastra Area 1 400KV Amreli2 400KV Jetpur 3 400KV Chorania4 400KV Hadala5 400KV Essar Power6 220KV Dhokadava7 220KV Gondal8 220KV Jamnagar9 220KV Dhrangdhra

10 220KV Keshod11 220KV Limbdi12 220KV Morbi13 220KV Rajkot14 220KV Ranavav15 220KV Savarkundala16 220KV Timbdi17 220KV Vartej18 220KV Motipaneli19 220KV Motipaneli20 220KV Kovaya21 220KV Essar Oil22 220KV Botad23 220KV Sardargadh24 220KV GSPC25 132KV Sikka (TPS)26 132KV Bhatia27 132KV Varsamedi28 132KV Reliance29 66KV Una

Sr.No. RTUs Under Kutch Area 1 400KV Adani(APL)2 400KV Varsana3 220KV Shivlakha (Chitrod)4 220KV Welspun5 220KV Adani(APL)6 220KV Sindhodi7 220KV Suthari8 220KV Nani Khakhar9 220KV Tappar

10 132KV Samkhiyali11 66KV Pragpar

Scad A

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