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Philippe Le-Huy
Expertise - Réseaux électriques et mathématiques
Paris, August 28, 2012
Preliminary CIGRE B4 DC Grid Test Preliminary CIGRE B4 DC Grid Test System: Modeling and Performances System: Modeling and Performances
in HyperSimin HyperSim
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Presentation OutlinePresentation Outline
HyperSim overview
Preliminary CIGRE test system
Results and performance
Conclusions
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HyperSim OverviewHyperSim Overview
Electromagnetic transient simulator Offline (any linux PC) & real-time (SGI) Bridges with Matlab/Simulink, EMTP-RV & DLL
components
Used for Control and protection system validation,
tuning and commissioning Network integration and operational studies
(SVC, HVDC, WPP, etc.) Large-area control strategies, smart grid
studies
HyperSim Application ExampleHyperSim Application ExampleWind Power Plant Integration StudyWind Power Plant Integration Study
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Preliminary CIGRE DC Grid test systemPreliminary CIGRE DC Grid test system
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Infinite buses
WPP
Preliminary CIGRE DC Grid test systemPreliminary CIGRE DC Grid test system
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DC-DC not represented (yet)
All converters are CTLC-36
|Vac| & f
P & Vac
Vdc & Vac
Preliminary CIGRE DC Grid test systemPreliminary CIGRE DC Grid test system
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VSC modelingVSC modeling
Cascaded Two-Level Converter ±400 kV symmetric monopole 36 modules per arm 40 kJ/MVA 2nd harmonic filter “Level 3.5” model (according to B4-57
classification)– R
on/R
off switch model
– Node suppression– Full conduction logic– No approximation
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VSC modelingVSC modeling
CTLC control Developed in Matlab/Simulink Basic strategies
–P-Q, P-Vac
, Vdc
-Q, Vdc
-Vac
& |Vac
|-f
Phase-shifted pulse-width modulation Capacitor balancing algorithm
No protection scheme or contingency plan implemented (yet)
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WPP modelingWPP modeling
Full-power converter wind generator (type IV) Synchronizes with grid and regulates active power
for nominal output NREL/WGMG aggregated equivalent model with
equivalent collector system
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Lines and other parametersLines and other parameters
According to the preliminary specifications proposed by B4-57
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Cigré B4 test system in HyperSimCigré B4 test system in HyperSim
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Steady State (generation and converters)Steady State (generation and converters)
500 MW
500 MW
500 MW
1000 MW
100 MW
490 MW
980 MW
1919 MW
1700 MW
500 MW
1300 MW
442 MW
490 MW
571 MW1340 MW
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Steady State (lines)Steady State (lines)
483
285
674
836
74
331
9251120
1151
199
365986573385
253
204
177
571
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Steady StateSteady State
Total generation: 4860 MW WPP (C, D & F): 2500 MW AC (A1 & B0): 2360 MW
Total load: 4590 MW AC (B): 3919 MW Offshore (E): 100 MW Slack (A0): 571 MW
Total losses: 270 MW VSCs: 89 MW DC lines: 103 MW AC lines: 31 MW WPP collector systems: 47 MW
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B2 Pole-pole DC faultB2 Pole-pole DC fault
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B2 Pole-pole DC faultB2 Pole-pole DC fault
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PerformancePerformance
The test system (with WPPs) has an execution time per time step of: 1 ms on a single Intel Core i7-740QM 1.73 GHz
core 107 us on a dual Intel Xeon X5680 3.33 GHz
system And runs in real-time on an Sgi UV 100 (quad
Intel Xeon E7-8837 2.67 GHz)
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ConclusionsConclusions
HyperSim is well suited for such large scale system
Real-time performances are possible without losing details
Network equivalents could be replaced by detailed power grids (e.g. HQ, Rte, etc.) with ease
Control systems are critical to system response Currently exploring the idea of “virtual control
systems” i.e. software emulation of real controllers
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ConclusionsConclusions
Thank you for your attention!
Questions?
