The development of large-scale variable speed pumped storage units in China has entered the stage of engineering application. Variable speed pumped storage units
The reporter learned from Southern Power Grid that today, the procurement and manufacturing contracts for China's first domestically produced 300 MW and 400 MW variable speed pumped storage units were signed in Guangzhou, marking a new stage in the development and application of large-scale variable speed pumped storage units in China.
Variable speed pumped storage units can change the rotor speed and flexibly adjust the power, allowing fluctuating new energy sources such as wind and photovoltaic power to be more stably connected to the grid. With the increasing proportion of wind and photovoltaic installed capacity in the power system in China, the development of variable speed pumped storage units has been synchronized and accelerated.
At the end of 2022, the localization of the complete set of 300 MW variable speed pumped storage units will rely on the Zhaoqing Langjiang Pumped Storage Power Station, as well as the construction of China's first ultra large capacity variable speed pumped storage project, the Huizhou Zhongdong Pumped Storage Power Station. The two variable speed pumped storage units purchased and manufactured in this procurement will be installed separately in these two pumped storage power stations, and are expected to be fully delivered by the end of December 2025.
![The development of large-scale variable speed pumped storage units in China has entered the stage of engineering application. Variable speed pumped storage units](https://a5qu.com/upload/images/746911797f236f27cefae6a68b101d8d.jpg)
At present, the main construction of the Zhaoqing Langjiang and Huizhou Zhongdong pumped storage power stations is accelerating, and the equivalent rotor model manufacturing and the first round of testing for variable speed units have been completed, laying a solid foundation for the smooth engineering application of large variable speed pumped storage units in China.