To endorse and forward the 5/20/10 PRS Report and Impact Analysis for NPRR239 to TAC.
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May 12, 2010
This Nodal Protocol Revision Request (NPRR) proposes a requirement that certain Wind-powered Generation Resources (WGRs) limit the unit ramp rate to 10% per minute of their nameplate rating as registered with ERCOT. The proposed language is based on the concept set forth in zonal Protocol Section 6.5.13, WGR Ramp Rate Limitations.
The intent of this NPRR is to maintain system reliability as it allows ERCOT to avoid frequency spikes due to WGRs’ ability to ramp up or ramp down almost instantaneously.