Transmission Reliability Performance Metrics

November 5, 2009

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Transmission reliability metrics are more complex due to many factors

Factors

Response

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Grid configuration, flows, and robust structural design sets transmission apart

Distribution

Radial Flow

Transmission

Bi-Directional Flow

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Multiple functions of transmission vs. Load Serving distribution function

GenerationInterconnectionLoad

CircuitSwitchingSubstationCritical Path

Distribution Transmission

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Transmission is subject to significant market interaction

Factors

Interactions

Response

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The transmission industry is undergoing significant change

Factors

Response(Metric)

New

New

Modified

Modified

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The physical attributes of the transmission grid are changing

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The ownership and organization of utilities in the industry is changing

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How we envision transmission grid use and its functionality is changing

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Transmission reliability performance metrics development takes time

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History 101: Two blackouts prior to the formation of NERC

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2003 Blackout initiates change. FERC gains authority of grid reliability 2006

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NERC RMWG working group formed in May 2009

1965 1977 2003 2009

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Complexity & Change with Time Ticking

ComplexityChange Clock

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Blue Arc Energy Solutions , Inc.your advantage in performance intelligence

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