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Power System
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Distribution System
substations
transformers
circuit breakers
feeders
sectionalizing switches
capacitor banks voltage regulators
DSGs
customers
- HT customers- LT customers
Generation System
Transmission System
Primary
circuits
Generating Plant
Step-uptransformers
Circuit breakers
Transmission System
Transformers in
Bulk power
substations
Solar or
WindSources
(100KW to
1MW)
One-phaselateral feeder
Distribution
Transformer
DispersedStorage and
generation(DSG)
VoltageRegulator
Capacitor
bank
Sub-transmissionsystem
Distributionsubstation
Three-
phasePrimary
feeders
Battery or
Fuel cells,1 to 25 MW
DSG Sectionalizing
switch
DSGPhotovoltaic
Power supply,up to 100 KW
Home
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Power System connectivity
33 kV lines
220kV Lines
EHV substations
Distribution
substations
220/33 kV
Sub-station
33/11 kV
Sub-station
Industry at 33 kV
11 kV lines(feeders)
Distribution
Transformer
11/ 0.4 kV
Industry at 11 kVCustomers
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Power System in a typical city
EHV Sub-stations
Distribution s/s
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IT Applications to Power
Power System Operation and Control
- Power Plant Automation- Energy Management Systems
- Distribution Automation
- GIS Applications
Metering and Billing
Energy Accounting/auditing
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8/13/2019 Eng Sys - Power-Systems - Lecture 2
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Primary
circuits
Generating Plant
Step-uptransformers
Circuit breakers
Transmission System
Transformers in
Bulk power
substations
Solar or
WindSources
(100KW to
1MW)
One-phaselateral feeder
Distribution
Transformer
DispersedStorage and
generation(DSG)
VoltageRegulator
Capacitor
bank
Sub-transmissionsystem
Distributionsubstation
Three-
phasePrimary
feeders
Battery or
Fuel cells,1 to 25 MW
DSG Sectionalizing
switch
DSGPhotovoltaic
Power supply,up to 100 KW
Home
Energy Management System
Control
Center
( monitor
andControl )
219 kV
248 MW
SCADA
and
Application Functions
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Function of Energy Management System
Remotely monitors the Transmission system,
facilitates supervisory control of devices and
provides decision support tools to improve thesystem performance
(Supervisory Control And Data Acquisition)
Application Functions
SCADA
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SCADA
SCADAHow ?
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SCADA Features
Hardware Components
Software Components
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CC
COMMUNICATION
RTU FIELD
Transducers
/ Relays
/ IEDs
DevicesPanels
SCADA Hardware Components
Voltage
Field Values
Voltage 0-10 DC
Transducer
output
011011110011
A/D Converter
output
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SCADA Hardware Components
Voltage
Field Values
Voltage 0-10 DC
Transducer
output
011011110011
A/D Converter
output
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Modems
FES
1 & 2
RTUs in
the field
SCADA Host Systems
LAN
MMI 1MMI 6
Video
Projector
App Server
P -1
P -2
DT 1 & 2
PERIPHERAL
SERVER -1
Printer
Sharer PERIPHERAL
SERVER -2
Time
Center
LANLAN
FES
1 & 2
FES
1 & 2
MMI 1MMI 1
PERIPHERAL
SERVER -2
PERIPHERAL
SERVER -2
SCADA Host Systems App Server
App Server
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Station A1
Station A2
Zone A
Station B2
Station B1
Zone B
REGION AB
SCADA System Architecture
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SCADA Software Components
Data Acquisition
Data Processing
Control
Alarms and Events
Database
Graphical User Interface
Logging and Reporting
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Network Model
Management
MarketParticipants(Markete
rs,TSP,Gen
,
Load)
State Estimator RTCA TCM
VSAT/TSAT
RUC
Outage Scheduler
Load Forecast
CRR
SCADA
Models
Outages
Load Schedules
Offers, Bids, market clearing results, etc.
SettlementsBilling, dispute interface
D
ataWarehou
seReports
DAM
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National Load Dispatch Center (NLDC) in Delhi
Regional Load Dispatch Center
(RLDC) North
Regional Load Dispatch Center
(RLDC) W, S, E, NE
State Load Dispatch Center(SLDC)
Sub Load Dispatch Center
(SubLDC)
Substation
State Load Dispatch Center(SLDC)
Substation
Sub Load Dispatch Center
(SubLDC)
User User
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