During the peak hours of electricity consumption, Jixi Pumped Storage Power Station in Anhui Province first pumps water to the upper reservoir and then discharges it to the lower reservoir for power generation. This technology can convert the surplus electric energy at low load into high-value electric energy, and is also suitable for frequency modulation and phase modulation to stabilize the frequency and voltage of power system. In addition, it is also suitable for emergency standby, which can improve the efficiency of thermal power plants and nuclear power plants in the system.

I. Anhui Jixi Pumped Storage Power Station Anhui Jixi Pumped Storage Power Station is the largest pumped storage power station in Anhui Province at present, with a total designed installed capacity of 6.5438+0.8 million kilowatts. * * Six reversible mixed-flow pumped storage devices are installed, with an average annual power generation of 3.0./kloc-0.50 billion kWh and a total investment of 9.888 billion yuan. This project is also a national energy development? Twelfth Five-Year Plan? Planning, Anhui Province? 86 1? Action plans and key investment projects determined by the provincial government.

Jixi Pumped Storage Power Station in Anhui Province has a unique geographical location and is located in the mountainous area of southern Anhui. It is 88km153km and 224km away from Huangshan, Xuancheng and Wuhu expressways, 346km and 225km away from Nanjing and Hangzhou respectively. Upper storage capacity 10598900 m, lower storage capacity 10944800 m, power station capacity 1800 MW (6 sets? 300 MW).

2. The upper reservoir, water conveyance system, underground powerhouse system and lower reservoir of Anhui Jixi Pumped Storage Power Station are the main buildings of Anhui Jixi Pumped Storage Power Station.

The upper reservoir of Jixi Pumped Storage Power Station in Anhui Province is located in Chishikenggou, a tributary of Deng Yuan River, with an east-west distribution. It is surrounded by reinforced concrete face rockfill dam and the mountains around the reservoir.

The Lower Reservoir of Anhui Jixi Pumped Storage Power Station is located at Shanglingqian and Xialingqian villages in Shan Jian Basin, Chishigoukou, a tributary of Deng Yuan River. The main buildings are dams, shore spillway, diversion and spillway tunnels.

The diversion system of Jixi Pumped Storage Power Station in Anhui Province is arranged with three holes and six machines. Pumped storage power station is composed of upper reservoir inlet and outlet, upper diversion tunnel, diversion surge chamber, upper diversion shaft, middle diversion tunnel, lower diversion shaft, lower diversion tunnel, diversion bifurcation pipe and diversion branch pipe.