Reducing Conventional Copper Signaling in High Voltage Substations with IEC 61850 Process Bus System David McGinn, GE Digital Energy Maciej Goraj, GE Digital Energy Jorge Cardenas, GE Digital Energy Digital Energy Multilin •International Scientific & Technical Conference •“Actual Trends in Developments of Power System Protection and Automation”, 7-10 September 2009, Moscow
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Reducing Conventional Copper Signaling in High Voltage Substations with IEC 61850 Process Bus System David McGinn, GE Digital Energy Maciej Goraj, GE Digital.
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Reducing Conventional Copper Signaling in High Voltage Substations with IEC 61850 Process Bus System David McGinn, GE Digital EnergyMaciej Goraj, GE Digital EnergyJorge Cardenas, GE Digital Energy
Digital EnergyMultilin
•International Scientific & Technical Conference
•“Actual Trends in Developments of Power System Protection and Automation”, 7-10 September 2009, Moscow
CIGRE RUSSIA, 7-10 Sept 2009 Moscow•2
• Robust and practical process bus architecture is a missing element on the road to implementing the next generation of Protection and Control (P&C) systems
• Successful technical solutions are those that are simple and that address well-defined real problems
• Migrate physical variability of connections into software and fiber connectivity
Before … … After
CIGRE RUSSIA, 7-10 Sept 2009 Moscow•6
Design Principles
> Standard magnetic ITs will be in service for a long time:
– Not dependant on installation of non-conventional ITs, but
– Support non-conventional ITs as market acceptance grows
CIGRE RUSSIA, 7-10 Sept 2009 Moscow•7
Design Principles
Maintain traditional P&C concepts:
– Overlapping and independent zones of protection
– One independent device protecting one zone
– Minimum inter-dependencies
LINE 1ZONE
LINE 2ZONE
XFRM 1ZONE
CB-2CB-1
CB-3 CB-4
CB-
5CB-
6
Not all the process data is needed by all IEDs. The limited data requirements of each IED are clearly and unambiguously dictated
by the virtually fixed power primary equipment arrangement.
CIGRE RUSSIA, 7-10 Sept 2009 Moscow•8
System Architecture
CIGRE RUSSIA, 7-10 Sept 2009 Moscow•9
System Architecture Process bus Merging Units
installed in the switchyard at direct proximity to HV primary equipment
Provide complete I/O capability for the system
Interface all types of switchgear (CBs+CTs, PTs, free-standing CTs, disconnect and ground switches, sensors)
Data acquisition and outputs only, no processing (future-proof)
Redundant MUs for critical signals
No conventional I/Os in IEDs in relay cabinets
No extra devices in the system (LAN switches, master clocks)
CIGRE RUSSIA, 7-10 Sept 2009 Moscow•10
System Architecture Merging Units connected via
multi-fiber cables (star topology) Fiber cables in trenches, directly
buried when required Merging Units powered via
copper wires integrated in the fiber cable
Prefabricated high-density cable connectors
SwitchyardControlhouse
Outdoorfiber cables
CIGRE RUSSIA, 7-10 Sept 2009 Moscow•11
System Architecture
Brick Brick Brick Brick Brick Brick
UR UR UR
ExistingSCADA
StationHMI
Gateway
PROCESS BUS, IEC 61850
Stat
ion
Inte
rfac
ePr
oces
sIn
terf
ace
NE
RC
CIP
SE
CU
RIT
Y B
OU
ND
AR
Y
Station LAN (IEC 61850 Station Bus)
System Components
CIGRE RUSSIA, 7-10 Sept 2009 Moscow•13
System Components
CIGRE RUSSIA, 7-10 Sept 2009 Moscow•14
Outdoor Mounting Scenarios• External, on a Circuit Breaker• External, on a structure• External on VT, CT marshalling box• Internal, old oil-type Circuit Breaker• Etc.,