Frequency regulation auxiliary service is of great significance for maintaining the stability of the system frequency and ensuring the safe and reliable operation of the system. At present

the types of frequency regulation auxiliary service products in China are simple and fixed price settlement is mostly adopted

which is not conducive to the optimal allocation of frequency regulation resources. The product type

operation mode

price and settlement mechanism of the frequency regulation auxiliary service market in the three mature power markets of PJM in USA

the UK and Nordic are deeply studied

and the characteristics of the above three typical frequency regulation auxiliary service markets are compared and analyzed. On this basis

combined with the domestic actual situation

suggestions for the development of the domestic frequency regulation auxiliary service market are put forward

hoping to provide a useful reference for the construction of the domestic frequency regulation auxiliary service market.