Primary Frequency Response

PFR. Immediate proportional response to system Frequency Deviations.

Relevant items: Fast Frequency Response   Primary Control   Secondary Control   Tertiary Control   Frequency Regulation   Automatic Generation Control   Frequency Stability

Primary Frequency Response

The immediate proportional increase or decrease in real power output provided by generating units/generating facilities and the natural real power dampening response provided by Load in response to system Frequency Deviations. This response is in the direction that stabilizes frequency.

Relevant news:

• 2022 Feb., (p1), Based on PJM’s frequency response analysis and oscillation detection using highly granularity PMU data, in addition to NERC Resource Subcommittee analysis, there are no near term concerns with inertia in the EI.
• 2021 Nov., (p4), PJM proposed “Reliability Products and Services” that involves Inertial in the Frequency Response.
• 2021 March, (p11), Inertial and Primary Frequency Response: Generators that provide these types of frequency response are not explicitly compensated for this service under today’s rules.