OC looks at 30-minute reserve proposals


PJM reviewed its plan going forward for real-time 30-minute reserve proposals at the April 3 Operating Committee meeting.

Vince Stefanowicz, lead engineer – Generation, continued education on the issue, which comes from the issue charge for the Energy Price Formation Senior Task Force. The task force will address all market and price formation issues except the targeted reliability-related aspects of the real-time secondary reserves product, which the OC will examine.

PJM discussed the reserve proposals as part of last year’s gas-electric coordination effort. The goal of the current initiative is to develop a real-time secondary reserve product that addresses the real-time primary and secondary reserve requirements.

Stefanowicz laid out the drivers behind real-time 30-minute reserves, including the overarching resilience and operational needs, such as gas pipeline contingencies and severe weather events.

There are a number of variables to consider, including wind/solar forecast volatility, the steepness of load curve (particularly the pick up or drop off at night), increased penetration of distributed energy resources onto the grid and real-time forced outage rates.

Next steps include further data review – including what other grid operators are doing – and analysis, and a possible joint meeting of the OC and the task force.

Dave Schweizer, manager – Generation, gave an overview of fuel assurance for restoration. Schweizer touched on the role of black start units as a component of restoration.

PJM is developing a fuel assurance requirement for new/existing black start units, which would include dual-fuel capability, on-site fuel storage and/or multiple gas pipelines. The requirements would also look at clarifying compensation mechanisms and creating a transition plan for existing black start resources. The target for implementation of the business rules is the fall of 2018.

The new business rules for black start fuel assurance requirement would be applicable to the next RTO-wide black start request-for-proposal process (2023 RFP for new black start units to be available for 2025) and would also be applicable to incremental RFP processes after 2018.

Eric Hsia, manager – Operation Analysis & Compliance, presented recommendations to improve the Synchronous Reserve Tier 1 performance. PJM analyzed synchronous reserve events in durations of 10 minutes and 9 minutes from January 2016 through January 2018. PJM reviewed unit parameters and unit responses for spin ramp rates versus energy ramp rates (page 3), spin max versus eco max (page 4–5) and unit responses (page 6).

From the analysis, PJM will request changes to Manual 11: Energy & Ancillary Services Market Operations to reflect changes of ramp rate submissions through the Markets Gateway tool. Redline manual language to cap spin max to eco max will be presented in future OC and MIC meetings.

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