Design of Wide Area Controls - EPCC Workshop 3 Bose (p).pdfCollege of Engineering and Architecture...
Transcript of Design of Wide Area Controls - EPCC Workshop 3 Bose (p).pdfCollege of Engineering and Architecture...
![Page 1: Design of Wide Area Controls - EPCC Workshop 3 Bose (p).pdfCollege of Engineering and Architecture What is Wide-Area Monitoring, Protection and Control? •Wide-Area Monitoring Systems](https://reader034.fdocuments.us/reader034/viewer/2022042122/5e9c531b28059c00f8122313/html5/thumbnails/1.jpg)
College of Engineering and Architecture
Design ofWide Area Controls
Anjan BoseWashington State University
Pullman, WA, USA
EPCC Workshop
Altea, Spain
May, 2011
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College of Engineering and Architecture
What is Wide-Area Monitoring, Protection and Control?
• Wide-Area Monitoring Systems (WAMS)
First installation of PMUs was called WAMS
• Wide-Area Protection
Event driven
Logic processing of non-local inputs/outputs
Switching
Now called SPS or SIPS
• Wide-Area Control
Multiple non-local input/output
Analog input/output
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College of Engineering and Architecture
Wide-Area Monitoring
Issues
• Scaling up – number of PMUs
• Visualization for the operator
• Upgraded EMS applications
• Data storage: distributed vs. central
• Data processing/mining
• Best use has been post-event analysis
• Other off-line analytical applications
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College of Engineering and Architecture
What is Wide Area Control?
• Control also implies computation
Detection of emergencies
Identification of emergencies
Calculation of controls
• ‘Wide area’ also implies communication
Signals are sampled (digital)
Signals have time delays (latency)
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College of Engineering and Architecture
How do we check feasibility?
• Develop controller
• Test on real time simulation
Nonlinearities
Discontinuities (digital control)
Time delays (latencies)
• Test on real time data
• Test in real time (without closing the loop)
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College of Engineering and Architecture
What WACs are feasible?
• Slow control (10-seconds)
AGC
Regional voltage control
Phasor measurements not needed
• Oscillation control (seconds)
• Transient stability control (sub-seconds)
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College of Engineering and Architecture
Model Based Control
• Real Time Model is updated by State Estimator
Static model updated in minutes
• Hundreds of Contingency scenarios studied
Operator is alerted
• Remedial Action can be calculated by OPF
Can the loop be closed?
Faster update of Real Time Model is needed
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College of Engineering and Architecture
A Critical Missing Piece
Simulation Test Bed for the Smart Grid
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TSAT
Measurement Generator
Static Data Generator
C37.118 Generator
Simulated PowerSystem
Substation N
Substation 1
GridStat
FE
FE
FE
FE
FE
FESubstation OM
Substation SE
Substation Gateway
Substation 1SubstationLevelSimulation
Oscillation Monitor
State Estimator
ControlCenterLevel
GridSim Overall Architecture
Substation OM
Substation SE
Substation Gateway
Substation 1
Substation OM
Substation SE
Substation Gateway
Substation 1
Substation OM
Substation SE
Substation Gateway
Substation 1
Substation OM
Substation SE
Substation Gateway
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College of Engineering and Architecture
Simulated Bus Voltages by Powertech TSATGenerated PMU Measurements
33 msecs time steps
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College of Engineering and Architecture
SE Solution at Each SubstationSE Solution at Control Center
30 times per second
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College of Engineering and Architecture
SE at Control Center
with time jitter