outage scheduling before and after events
Post on 16-Jan-2016
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Ebby JohnCenterPoint 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 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.
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.
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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