A total of six 350-megawatt pumped storage units have been designed and installed in Changlongshan Power Station, and five units have been put into operation since the end of June last year. The No. 6 unit of the power station was started for the first time, and the speed was smoothly increased to the rated speed of 600 rpm.
Yao Liang, Director of Engineering Department of Three Gorges Group Zhejiang Changlongshan Pumped Storage Co., Ltd.: After the completion of the flushing, there are more than 50 test projects to follow.
The Changlongshan Power Station is a pumped-storage power station with a “high head, large capacity, and high speed”, with a rated head of up to 710 meters. The rated speed of Unit 6 and the newly commissioned Unit 5 are both 600 rpm, which is the highest speed among 350 MW pumped storage units in the world. At the same time, the power station is also the only power station in the country that arranges two pumped storage units with different rated speeds in the same factory building.
Changlongshan Power Station is located in Anji, Zhejiang Province, with a total installed capacity of 2.1 million kilowatts. After all units are put into operation, the average annual power generation can reach 2.435 billion kilowatt-hours. It is mainly responsible for peak regulation, valley filling, frequency regulation, phase regulation and emergency backup of the East China Power Grid.