Pumped storage is a new type of energy storage, right?

Pumped storage is a new energy storage method and a kind of energy storage technology.

Pumped storage takes water as energy storage medium, and realizes the storage and management of electric energy through the mutual transformation of electric energy and potential energy. The electric energy at low power load is used to pump water to the upper reservoir, and then release water to the lower reservoir for power generation at peak power load. It can convert surplus electric energy into high-value electric energy in the peak period of power grid when the power grid load is low. It is suitable for frequency modulation and phase modulation to stabilize the frequency and voltage of power system and improve the efficiency of thermal power plants and nuclear power plants in the system.

Pumped storage is a kind of energy storage mode with the most mature technology, the best economy and the most large-scale development conditions. It is a green, low-carbon, clean and flexible power supply for power system regulation. On February 28th, 2008, the first unit of Shanxi Xilongchi Pumped Storage Power Station, which was built by China Hydropower, was put into operation. On February 23, 2022, Xilongchi Pumped Storage Power Station located in Wutai County, Xinzhou City, Shanxi Province operated in an orderly manner. On the morning of March 17, 2022, two pumped storage power stations in Fengxin, Jiangxi and Taishun, Zhejiang started at the same time.

Principle of pumped storage power station:

The working principle of pumped storage power station is to use electric energy to pump water to the upper reservoir when the power load is low, and then release the water to the lower reservoir for power generation at the peak of the power load. Pumped storage power station is the only peak-shaving power supply that can fill the valley in the power system. For the power system with large peak-valley difference and insufficient peak-shaving ability, it is necessary to set up such power stations of a certain scale. The working principle of pumped storage power station is to use electric energy to pump water to the upper reservoir when the power load is low, and then release the water to the lower reservoir for power generation at the peak of the power load.

It can convert redundant electric energy into high-value electric energy in the peak period of the power grid when the power grid load is low, and it is also suitable for frequency modulation and phase modulation to stabilize the frequency and voltage of the power system, and it is also suitable for emergency standby, and can also improve the efficiency of thermal power plants and nuclear power plants in the system. Also known as pumped storage hydropower station. The construction of pumped storage power station in China started late, but the starting point is relatively high due to the late effect. The technology of several large pumped storage power stations built in recent years has reached the advanced level in the world.