Metric Definition
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Verify SCED Execution Quality
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Timeframe
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EDS 3
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Target Completion
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August 31 2008
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Metric Description
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ERCOT will determine the quality of each SCED execution by monitoring model performance (Real Time Duality Gap) and constraints provided by Transmission Constraint Management are managed by SCED.
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Background
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The intent of this metric is to ensure the quality of SCED execution .
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Criteria
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The Readiness Team will review documentation provided by model performance monitoring and constraint management.
LMP is Greter than or equal to offer price at maximum limit (HDL) for a Resource which is dispatched at maximum limit (HDL)
LMP is less than or equal to offer price at minimum limit (LDL) for a Resource which is dispatched at minimum limit (LDL)
LMP is equal to offered price at dispatched MW point for a Resource which is dispatched within minimum limit (LDL) and maximum limit (HDL) (provided the offer price is not mitigated)
Shadow Price is zero for a transmission constraint which is not binding
Shadow Price is non-zero for a transmission constraint which is binding
Base Points are between HDL and LDL
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References
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Nodal Transition Plan: 6.1(c.) Nodal Protocols: 6.5.7.1.12, 6.5.7.1.13
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