To recommend approval of NPRR273 as amended by the 9/20/10 Luminant comments and as revised by PRS and to forward NPRR273 and the Impact Analysis to TAC.
Sep 15, 2010
3.9.1, 3.9.2, 184.108.40.206, 6.4.3, 220.127.116.11, 6.6.5
The Generation Resource Status of "ONTEST" was originally created in the Protocols to recognize generation unit test operations that could not be dispatched by Security-Constrained Economic Dispatch (SCED). These operations included testing of the unit for economic performance, emissions compliance, qualification for provision of Ancillary Services, voltage/MVaR management, and other unit testing activities. This Nodal Protocol Revision Request (NPRR) expands the use of this Resource Status to provide for Generation Resource operations during start up and shut down of the unit as well as unit testing requirements.
The Resource Status "ONTEST" will allow for Qualified Scheduling Entities (QSEs) to indicate to ERCOT through telemetry that the Resource is operating in a start-up or shut-down sequence and is being manually dispatched by the QSE in addition to the original purpose to indicate that the Generation Resource is performing a test of its operations either manually dispatched by the QSE or by ERCOT as part of the testing. This Resource Status will be recognized by the current nodal systems design and will cause the SCED output Base Point to be set equal to the net real power telemetry of the Resource at the time of SCED execution.
The Resource Status "ONTEST" will also be recognized in Settlements and considered a Base Point Deviation charge exemption. Resource Status will replace the Low Sustained Limit (LSL)/ High Sustained Limit (HSL) telemetry as an input to the TELHSLFLAG due to system limitations.
Consistent with the additional uses of the Resource Status code, its description has been revised to remove the requirement that an Output Schedule is required when this Resource Status is assigned by the QSE.
Start-up and shut-down operations of Generation Resources must be recognized in SCED to produce Base Points equal to the Resource’s net real power at the time of the SCED dispatch. Doing so assures that the Resource can start-up or shut-down and not receive Base Points other that which can be accommodated as part of the start up and shut down sequence typically directed by the plant or QSE operators.