Tianshengqiao first-class hydropower station
Tianshengqiao Hydropower Station is located in the Leigongtan section of the Nanpan River at the border of Yuanxiangbo Township, Yazhu Town, Longlin County, Guangxi Province and Dewo Town, Anlong County, Guizhou Province. The left bank of the dam site is Anlong County, Guizhou, and the right bank belongs to Longlin County, Guangxi, which is generally called Longlin Tiansheng Bridge. It is the leading power station of Nanpanjiang and is the extra-large backbone power supply point of "West-to-East Power Transmission". The project is mainly for power generation, and has many functions such as flood control and storage. The hub is arranged in order of concrete panel rockfill dam, open spillway and vent tunnel on the right bank, and water diversion power generation system and ground plant on the left bank.
The project is jointly invested by the state, Guangdong, Guangxi and Guizhou with a total investment of 10.4 billion yuan, and the electricity is mainly supplied to Liangguang and Guizhou, with a total storage capacity of 10.26 billion cubic meters and a regulating storage capacity of nearly 5.8 billion cubic meters. Four hydro turbine units with a single capacity of 300,000 kilowatts were installed, with a total installed capacity of 1.2 million kilowatts and an annual power generation capacity of 5.226 billion kWh, which was completed at the end of 2000. Tianshengqiao not only has a huge power generation capacity, but also can increase the power generation of the downstream Tianshengqiao Secondary Hydropower Station, Yantan Hydropower Station and Dahua Hydropower Station by 4 billion kWh, and its role should not be underestimated.
Tianshengqiao first-class hydropower station
Four pumped storage power stations are planned to be built around Tianshengqiao Hydropower Station, namely Guangxi Longlin Tianshengqiao Pumped Storage Power Station, Guangxi Longlin Tianshengqiao Fengren Pumped Storage Power Station, Guangxi Longlin Tianshengqiao Xiangbo Pumped Storage Power Station, and Guangxi Longlin Gebu Pumped Storage Power Station.
There are more than 80 islands and peninsulas in the reservoir area of Tianshengqiao Hydropower Station "Wanfeng Lake", which is connected with the mountains and rivers of the Grand Canyon of Maling River, a national scenic spot, with an area of 816 square kilometers, and is the largest artificial freshwater lake in China. During the dry season every year, the seawater of the Pearl River Delta estuary will be backfilled, affecting the quality of production and domestic water in the Pearl River Delta.
Wanfeng Lake
Tianshengqiao II Hydropower Station
The distance between the Tianshengqiao II Hydropower Station and the Tianshengqiao Class I Hydropower Station is 18 kilometers, and the distance of the Nanpan River from the dam cable to the secondary plant is 14.5 kilometers, with a drop of 181 meters. Power generation is the second level of Tianshengqiao single function, Tianshengqiao second level hydropower station is a diversion power station, the Nanpan River is cut and straightened, and three 9776.21-meter-long diversion tunnels are dug in the Shiziling mountain to divert water for power generation. The 3 diversion tunnels are like 3 dragons lying across the Lion Ridge Mountain. Tianshengqiao II Hydropower Station is the first power point of China Southern Power Grid's "West-to-East Power Transmission", and the dam is a RCC gravity dam.
Diversion tunnels
The total investment is 10.37 billion yuan, the normal storage reservoir capacity is 26 million cubic meters, and the regulating reservoir capacity is 8.03 million cubic meters, which is an incomplete daily regulating reservoir. The discharge capacity of the Tianshengqiao first-class hydropower station is to consider the discharge volume of the second-level, and the two reservoirs must be coordinated and dispatched in the same step, otherwise the safety of the second-level hydropower station dam will be threatened. The power station has installed a total of 6 units with a single capacity of 220,000 kilowatts, with a total installed capacity of 1.32 million kilowatts and an annual power generation capacity of 8.2 billion kWh, and all six units were connected to the grid for power generation in December 2000. Nearly 10,000 armed police and hydropower personnel have worked hard for more than ten years and finally built the magnificent Tiansheng Bridge II.
Tianshengqiao II Hydropower Station
Pingban Hydropower Station
Located in the lower reaches of Panjiang River in Henan, the border between Guangxi and Guizhou, the upper level is Tianshengqiao secondary hydropower station, the lower level is Longtan hydropower station, on one side is Longlin County, Guangxi, on the other hand, Guizhou Xixiang County, is a comprehensive water conservancy project integrating power generation, shipping and irrigation. One of the key projects of "West-to-East Power Transmission". With a total investment of 2.073 billion yuan and a total storage capacity of 278 million cubic meters, three axial flow paddle turbine generator units with a single capacity of 135,000 kilowatts have been installed, with a total installed capacity of 405,000 kilowatts and an annual power generation capacity of 1.6 billion kWh, and all three units were connected to the grid for power generation in August 2005. The Pingban Hydropower Station is of great significance to promoting local economic development and protecting the ecological environment.
Pingban Hydropower Station
Badu Hydropower Station
It is located on the boundary river of Tianlin County, Guangxi Province and Guizhou County, and the dam site is preliminarily set in Badu Town, Guizhou County. The project is mainly based on power generation, combined with shipping. The total budget investment is 4.4 billion yuan, with a total storage capacity of 162 million cubic meters, which is a daily regulating reservoir, and plans to install two single turbine units with a capacity of 170,000 kilowatts, with a total installed capacity of 340,000 kilowatts, an annual power generation of 1.275 billion kilowatts, a 500-ton ship lock, and a canalized waterway of 32 kilometers. At present, Qiannan Prefecture and Baise City are actively promoting this project.
At present, China Southern Power Grid Corporation has built a total of 19 large power transmission and transformation channels of 500 kV and above, of which 18 have been settled in Guangdong, with a cumulative transmission capacity of nearly 3 trillion kWh.