To recommend approval of NPRR387 as revised by PRS and to forward NPRR387 to TAC
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This Nodal Protocol Revision Request (NPRR) clarifies that for hydro Generation Resources operating in the synchronous condenser fast-response mode to provide Responsive Reserve (RRS), the initiation setting of the automatic under frequency relay setting shall not be lower than 59.80 Hz. It also includes language to address the instances when a hydro Generation Resource operating in synchronous condenser fast-response mode is triggered by an under frequency relay device without a corresponding RRS deployment by ERCOT.
Additionally, this NPRR is a companion to Nodal Operating Guide Revision Request (NOGRR) 068, Hydro-Responsive Reserve, and has been prepared in coordination with ERCOT Staff.
Changes to revise the use of "hydro-powered Resource" to "hydro Generation Resource" and revisions to Section 3.8 references are also proposed in this NPRR.
This NPRR establishes the minimum set point at which a hydro Generation Resource must set it’s under frequency relay device for automatic response to an ERCOT System frequency event and also clarifies that same Resource will not be deemed out of compliance when tripped by under frequency relay without corresponding RRS deployment.