In order to fully excavate the deep peak shaving capacity of coal-fired power units and improve the regulatory capacity of the power system,China has successively implemented the peak shaving auxiliary service market and spot market mechanisms,and some provinces have further explored the peak shaving capacity market mechanism to improve the flexible transformation income level and regulation capacity guarantee level of coal-fired power units.This article first outlined typical paths for flexibility transformation,studied the impact of deep peak shaving on the economic performance of unit operation,and took a million unit as an example to analyze and study the economic performance of deep peak shaving operation of coal-fired power units under different electricity market operating mechanisms.The results show that the peak shaving auxiliary service market can provide clear returns,the peak shaving capacity market can effectively accelerate the recovery of investment costs for flexibility transformation,and coal-fired power units with deep peak shav-ing ability are more likely to obtain positive returns under the electricity spot market operating mechanism.
deep peak shavingcoal-fired power unitelectricity marketeconomic benefit