PFR (Primary Frequency Response) is an auxiliary control service in the power system that quickly and automatically responds to frequency changes, playing a key role in immediately regulating power to curb frequency deviation when there is a sudden change in load or a generator failure. When this behavior is incorporated into the power market for bidding and competition, it forms the PFR market.
Advantages and Development Trends
Enhancing frequency stability: to cope with the fluctuating output of renewable energy;
Encouraging energy storage and flexible resources participation: promoting the development of battery and DER markets;
Improving market mechanisms: transitioning from traditional uncompensated services to transparently priced auxiliary services;

