Fast Frequency Response Concepts and Bulk Power System ...

discussion is the primary frequency control (or primary frequency response (PFR)) time frame. Figure B.1 shows a traditional system response following a relatively large loss of generation that causes a frequency deviation. 13. At t = 0-, generation and load are balanced and system frequency is at 60 Hz (nominal). At t = 0 +

  System, Time, Frequency, Frequency system