The Largest Electrochemical Energy Storage Project among China’s Coal-fired Power Plants Officially Began Operation

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.