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The Role of Substation Automationin Power System Control and
Management
ABB University Switzerland, 11.01.2012
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Globa
lSalesProgram
IntroductiontothePowerSyste
m2
The Role of SA in the Power System ControlOverview
The hierarchy of network control levels
Schematic diagram of SA system
SA as process interface
Network states and automation tasks
Trends in substation automation
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IntroductiontothePowerSyste
m3
The hierarchy of network control levels
REGION / NATION
Network control
AREA 1
Network control
AREA 2
Network control
SUBSTATION 1
SA
SUBSTATION 1
SA
SUBSTATION 1
SA
SUBSTATION 1
SA
Switchgear
Power transformer
Meas. transf. U, I
Aux. devices
Switchgear
Power transformer
Meas. transf. U, I
Aux. devices
Switchgear
Power transformer
Meas. transf. U, I
Aux. devices
Switchgear
Power transformer
Meas. transf. U, I
Aux. devices
SUB-
STATION
LEVEL
NETWORK
LEVEL
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lSalesProgram
IntroductiontothePowerSyste
m4
SA as process interface for network control
All information from process
(Power System) are acquired by the
Substation Automation system*
All actions on the process (Power
System) are performed by the
Substation Automation System*
*) protection integral part of SA
Network
Control
Center
Substation
Substation Automation System
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Schematic diagram of SA system
Station
bus
Process
bus
StationgatewayStationcomputerHMI
Control Protection Protection& Control Control
Protection
Process Interface Process Interface Process Interface
Stat ion
level
Bay
level
Process
level Switchgear/Switchyard
u wires
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Network states and automation tasks
Tasks at Network Level
Tasks at Subs tat ion Level
Economic and reliable power supply
High availability of network
Detection of dangerous conditions
Evaluation of disturbance
Determination of the remaining availability
Detection of fault
Selective fault clearing
Restoration of power supply
Reliable isolation
Bypassing the faulted section
Operative state of the network
interrupted
emergency
alert
normal
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Relayroom
Location
Operating
room
Switch
Yard
(GIS or
AIS)
Serial communication
(Fiber optics)
Todays SA
to other bays
GIS
Copper
cablesBay cubicle
Gateway
Stat ion bus
HMII
Sensors and
Actuators
Intelligent SA
GIS
Bay cubicle
Serial communication
(Fiber optics)
Gateway
to other bays
Stat ion bus
Process bus
HMI
Trends in Substation Automation (SA)
SCADA, distribution, metering,
etc.
Copper
cables
MMI, Control board
SA conventional
Copper cables
Bay cubicle
GIS
Copper
cables
Event recording,
Protection
Funct ional i ty: SA to con trol ,operate, monitor, and pro tect
the substat ion
