model validation – mod-026 and mod-027...• mod-026 – verification of models and data for...
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Model Validation – MOD-026 and MOD-027
Sherman Chen PG&E
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Previous WECC Requirement
• Generator model validation required for all generating units > 10 MVA, and all generating plants > 20 MVA
• Test required every five years • Test required within 180 days for new
commercial units or existing units which have been modified
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Typical Tests Performed
• Open circuit saturation curve • Field resistance test • D-axis dump (generator direct axis reactances
and time constants) • Xq test (generator quadrature axis reactance) • Inertia trip test • Governor step tests (on and off-line) • AVR step tests (on and off-line) • Min and max Var capability
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Diablo Canyon Voltage Regulator Test
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DCPP #2 AVR Step Test
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Validating Models to Actual System Response
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Helms 1 Governor Step Test
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Dutch Flat 1 Excitation Control
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JB Black 1 Mechanical Governor
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• MOD-026 – Verification of Models and Data for Generator Excitation Control System or Plant Volt/Var Control Functions
• MOD-027 – Verification of Models and Data for Turbine/Governor and Load Control or Active Power/Frequency Control Functions
NERC MOD Standards
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Parameter Estimation and Model Validation Tools Utilizing PMU Data Under Evaluation
• Mathworks Parameter Estimation and Model Validation Tool
• EPRI Power Plant Parameter Derivation Tool
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Questions?