srs chair report to rac
TRANSCRIPT
SADD by Owner (>25 NERC)
How to get off the SADD
▪ Fix your data, of course
• Please populate BA
▪ Send an email and ask for an exemption
• Provide a technical reason and explain why metrics are wrong (sometimes
they are)
• Using exemption list in development
Base Case Schedule
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Action Items
▪ Numerous open action items
• Journey vs. destination
o Focus on closing out action items
o https://www.wecc.org/Administrative/SRS%20Action%20Items.xlsx
• Received responses to EMTP survey questions
o Supportive of WECC collecting EMTP data, etc.
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19 May 2021 Single PV Trip
▪ WebPlotDigitizer*
▪ Digitizing off plots
• Sad state of affairs
o Share the data
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*Copyright 2010-2020 Ankit Rohatgi (automeris.io)
19 May 2021 Single PV Trip
▪ 19 May 2021 Conditions
• 19 May 2021, 0314 PDT
• 1 PV tripped at full load
o One unit was shutdown
o Second unit at 60 MW
▪ Per telcon with PV Ops staff
▪ Failed reactor test switch
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19 May 2021 Single PV Trip
▪ Data manipulation needed
• PMU recording (digitized)
o Recording triggers, latency, scan
rates, etc.
o Shifted to align lowest frequency
decline
• Grant PUD SCADA
o Aligns well…scan rate is slow
• This is typical event data…
▪ Compared to 21LS1a
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19 May 2021 Single PV Trip
▪ Post Data Manipulation
• Time shift PMU to left
o Align with Simulation
o Compare to Grant SCADA
▪ Case Modifications
• Just Palo Verde dispatch
o Decremented all WECC gen to accommodate
▪ Case had 3 PV units at max
▪ Analysis (MOD-033)
• WECC standard cases are:
o Excellent for large gen loss and freq?
o Data wins the day on utility of models
o SRS cases model reality
o Data scan smooths out ripples?
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