recently, the 60mw electrochemical energy storage project of the 1-2 and 6-7 generation units at guangdong taishan power plant under chn energy, the largest electrochemical energy storage auxiliary frequency modulation program among china’s coal-fired power plants, was officially put into operation. the project can further enhance the generation units’ comprehensive frequency modulation capacity, laying a solid foundation for the power plant to play a role as a “ballast” and “stabilizer” for energy supply in the guangdong-hong kong-macao greater bay area.
maintenance personnel conducting parameter testing and logic optimization in the centralized control module
covering an area of about 6,000 square meters, the project adopts high-capacity lithium iron phosphate battery energy storage and high-voltage cascade technology. beside the 1-2 and 6-7 generation units were installed a set of 25 mw/25 mwh and a set of 35 mw/35 mwh auxiliary frequency modulation system, respectively, with a total of 36 energy storage silos. after 30 days of static debugging and a frequency modulation test, grid-connected performance test, joint frequency modulation agc test and other network-related test procedures, it successfully completed the trial operation and achieved a revenue of 3.71 million yuan. after the project was officially put into operation, it would effectively improve the agc frequency regulation level of generation units, reduce the probability of small-power oscillation of the generation units’ frequency regulation response, and further improve the operating reliability and safety of the power grid, with an expected annual revenue of 60 million yuan.