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Outage Scheduling Before and After Events

Outage Scheduling Before and After Events. Ebby John CenterPoint Energy. Cancelling Outages During Events. Requested by ERCOT or Initiated by Transmission Owner Due to Short Supply, Storms, Other Reliability of ERCOT Grid Reliability of Local Network Safety. Cancelling Outages During

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Outage Scheduling Before and After Events

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  1. Outage Scheduling Before and After Events Ebby John CenterPoint Energy

  2. Cancelling Outages During Events • Requested by ERCOT or Initiated by Transmission Owner • Due to Short Supply, Storms, Other • Reliability of ERCOT Grid • Reliability of Local Network • Safety

  3. Cancelling Outages During 02-02-2011 Event • Due to forecasted extreme cold weather, CNP began cancelling next day planned outages on 01-31-2011. • Evaluated conditions each day and cancelled outages for next day • Canceled outages for week 02-07-2011 due to second wave of extreme cold.

  4. Concerns with Outage Restoration • Once an outage is cancelled, Protocols require resubmitting with at least 3 days notice. • Delays with Equipment and Personnel mobilized in the Field • Maintaining an outage in the OS that has been canceled in the field would produce inaccurate EMS and Market results.

  5. Lessons Learned • ERCOT has been working with Equipment Owners To manage Outage Coordination during Emergency Events. • ERCOT needs to have a clearly defined process to make restoration easier and more predictable. • Suggestions • Shorter Approval turnaround • Make use of Forced Outage process • Super User capability in OS for ERCOT Operator • New Outage Scheduler state for temporary hold.

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