The country’s first large-scale pumped-storage power station has been made fully operational, as the last unit of the Shenzhen pumped-storage power station was officially put into commercial use Tuesday, the Shenzhen Special Zone Daily reported yesterday.
Located between Yantian District and Longgang District, the Shenzhen pumped-storage power station is about 25 kilometers from Daya Bay Nuclear Power Station and Ling’ao Nuclear Power Station. Its total rated capacity is 1.2 million kilowatts and the designed annual average generating capacity is 1.51 billion kilowatt-hours.
The power station is not only a key part of China’s renewable energy development planning, but also a location of the country’s west-east power transmission project and the connection point of the Guangdong-Hong Kong power grid.
Meanwhile, its operation is of great significance to the sustainable economic, social and ecological development of the Guangdong-Hong Kong-Macao Greater Bay Area. It is expected to save 158,000 tons of standard coal and 18,300 tons of natural gas, while reducing greenhouse gas emissions by about 2,717 tons annually.
As the first pumped-storage power station to be designed, manufactured, installed and tested by China Southern Power Grid (CSG), the process that brought it to be fully operational also accumulated experience in optimizing the design and testing of domestic power units.
Pumped-storage power stations can utilize electric energy when the electric load is low and pump water to the upper reservoir, and then discharge water to the lower reservoir to generate electricity during the peak load period.
The Shenzhen pumped-storage power station can meet nearly one-third of the peak demand of the city’s power grid. It is conducive to optimizing the power structure, reducing transmission costs, meeting the increasing peak load demands and improving the operational conditions of nuclear power and thermal power.
Additionally, it will help fully absorb clean electricity transmitted from the country’s west, relieve the load pressure on the Shenzhen and Hong Kong power grid, and improve the safety and efficiency of power grid operation.
According to the head of CSG’s subsidiary in charge of peak load and frequency regulation, the lower reservoir of the power station was built in the expansion of the Tongluojing Reservoir.
The design and implementation of a drainage system that can separate clean water and sewage will ensure the effective protection of the ecological environment.