Recently, as China's largest coal-fired power plant electrochemical energy storage auxiliary frequency modulation project, the national energy group Guangdong Taishan Power Plant 1-2 and 6-7 units of a total of 60 MW electrochemical energy storage project officially went into operation, further improve the unit's integrated FM capability, to play a good guangdong-hong Kong-macao Bay area energy supply“Ballast” and“Stabilizer” to lay a solid foundation. The project covers an area of about 6,000 square meters, using large-capacity lithium iron phosphate battery energy storage and high-voltage cascade technology, one set of 25MW/25MW and one set of 35MW/35MW auxiliary FM system will be installed on the side of units 1-2 and 6-7 respectively. During the trial run, the company set up the trial run organization, prepared the trial run technical program, defined the job responsibilities of each post, formulated risk control measures, after 30 days of static debugging and One FM test, grid-connected performance test, Joint FM AGC test and other network-related test procedures, the final successful trial run, and achieved a profit of 3.71 million yuan. After the project is put into operation, the AGC frequency modulation level of the electric generator can be effectively raised, the frequency modulation response of the units can be reduced by small power oscillation probability, and the reliability and security of the power grid operation can be further enhanced. The annual revenue can reach 60 million yuan.