Operating Committee Reviews Results of Assessment Hour Simulation

PJM reviewed the results of a simulated performance assessment scenario and other Capacity Performance-related topics at the Operating Committee meeting Feb.7.

Stakeholders requested a simulation of a performance assessment hour by calculating performance penalties and bonuses using actual data from a peak summer hour. PJM ran the simulation using actual data from the peak load hours of Aug. 11, 2016, applying tariff formulas to determine both expected performance and actual performance for CP resources.

PJM ran two simulations: one simulation assuming the performance assessment hour was called for the entire RTO, and the other assuming it was called for the Mid-Atlantic region.  PJM did not dispatch any load management during the hour.

The real-time values review process allows resources to communicate their current operational capabilities when the resource cannot operate according to the unit-specific parameters (for Capacity Performance and base capacity) or default parameter limited schedule or exceptions (for non-CP).  The review included implementation details of FERC’s recent order stating that natural gas generators may receive make-whole payments during ratable take events.

During the update on the implementation of the unit specific parameter process, PJM reminded generating unit owners that they have 20 days remaining to submit requests for adjustments. PJM has been presenting educational materials to stakeholders, including frequently asked questions and a parameter overview.

PJM presented a proposal to initiate a joint stakeholder process between PJM and NYISO regarding the phase angle regulators (PARs) at the Ramapo substation.  The two grid operators need to determine an appropriate approach for a possible replacement PAR, including development of any cost recovery mechanism for the purchase and installation of replacements.

The PARs are located on the PJM-NYISO seam and are not contained within the rate base of any transmission owner. PJM and NYISO want to develop a stakeholder process for discussion of need and costs, since no such mechanism is currently in place.

The committee endorsed a proposal for two pseudo-tie agreements. PJM presented background of the proposed agreements in December and January meetings. The language addresses several issues, including developing uniformity in pseudo-tie requirements.

PJM also discussed a Jan. 15 load deviation, which coincided with the Green Bay Packers-Dallas Cowboys NFC playoff game. Based on historic data, RTOs plan for demand ebb and flows during the Super Bowl but the playoff game surprised PJM. The real-time load dropped about 2,000 megawatts below the forecast around 6:30 p.m. (Eastern), returning to the forecast about two hours later.  It caused an eight-minute spin response of almost 703 MW. The spinning reserve is the extra generating capacity created when the power output of generators already connected to the power system is increased. Phil D’Antonio, manager – Reliability Engineering, pointed out that these occurrences are rare and can be hard to predict.

The committee also endorsed the retirement of the Metering Task Force.

First Readings  

  • Changes to Manual 37: Reliability Coordination
  • Changes to Manual 13: Emergency Operations (NERC EOP standards consolidation)

Informational updates