What is the total annual power generation of the Three Gorges Hydropower Station?

The initial plan for the Three Gorges Power Station is 26 units of 700,000 kilowatts, which means an installed capacity of 18.2 million kilowatts and an annual power generation of 84.7 billion kilowatt hours. Later, an underground power station was built in the "Baishijian" mountain of the right bank dam, and six 700,000-kilowatt hydroelectric generators were built. In addition, the Three Gorges Hydropower Station itself has two 50,000-kilowatt power stations. The total installed capacity has reached 22.5 million kilowatts, with an annual power generation of 100 billion kilowatt hours.

1. Three Gorges Hydropower Station

The Three Gorges Hydropower Station is the Three Gorges Water Conservancy Project on the Yangtze River, also known as the Three Gorges Project. The Xiling Gorge section of the Yangtze River in Yichang City, Hubei Province, China, and the Gezhouba Hydropower Station downstream form a cascade power station.

The Three Gorges Hydropower Station is the largest hydropower station in the world and the largest engineering project ever constructed in China. The many issues such as immigration and environment caused by it have always been accompanied by huge controversy from the moment it was started. The Three Gorges Hydropower Station has more than ten functions, including shipping, power generation, planting, etc. The construction of the Three Gorges Hydropower Station was approved by the National People's Congress of China in 1992. Construction officially started in 1994. Water storage and power generation began on the afternoon of June 1, 2003, and it was completed in 2009.

The unit equipment is mainly composed of the VGS consortium composed of the German VOITH Company, the American General Electric Company (GE), the German Siemens Company, the French Alstom Company, and the Swiss Company. Provided by the ALSTOM consortium formed by ABB. When they signed the supply agreement, they all promised to transfer the relevant technology to China's domestic motor manufacturing companies free of charge. The power transmission and transformation system of the Three Gorges Hydropower Station is constructed and managed by the State Grid Corporation of China. It is expected that 15 500 kV high-voltage transmission lines will be installed to connect to various regional power grids.

The Three Gorges Hydropower Station has a dam elevation of 185 meters, a water storage elevation of 175 meters, a reservoir length of 2,335 meters, a static investment of 135.266 billion yuan, and the installation of 32 hydropower units with a single capacity of 700,000 kilowatts. The last hydropower unit of the Three Gorges Hydropower Station was put into operation on July 4, 2012. This means that the Three Gorges Hydropower Station, with an installed capacity of 22.4 million kilowatts, has become the world's largest hydropower station and clean energy production base on July 4, 2012. .

2. Construction scale

The Three Gorges Dam is a concrete gravity dam with a length of 2,335 meters, a width of 115 meters at the bottom, a width of 40 meters at the top, an elevation of 185 meters, and a normal water storage level. 175 meters. The dam body can withstand a catastrophic flood that occurs once in ten thousand years, and the maximum discharge flow can reach 100,000 cubic meters per second. The entire project required approximately 134 million cubic meters of earth and rock excavation and filling, approximately 28 million cubic meters of concrete pouring, and consumed 593,000 tons of steel. The total length of the reservoir is more than 600 kilometers, the average width of the water surface is 1.1 kilometers, the total area is 1,084 square kilometers, and the total storage capacity is 39.3 billion cubic meters, including 22.15 billion cubic meters of flood control capacity. The adjustment capacity is seasonal adjustment type.

The units of the Three Gorges Hydropower Station are arranged on the back side of the dam. There are 32 700,000-kilowatt hydro-generator units installed, including 14 on the left bank, 12 on the right bank, 6 underground, and 2 more. It has a 50,000-kilowatt power supply unit with a total installed capacity of 22.5 million kilowatts, far exceeding the Itaipu Hydropower Station in Brazil, which ranks second in the world.

The initial plan for the Three Gorges Power Station is 26 units of 700,000 kilowatts, which means an installed capacity of 18.2 million kilowatts and an annual power generation of 84.7 billion kilowatt hours. Later, an underground power station was built in the "Baishijian" mountain of the right bank dam, and six 700,000-kilowatt hydroelectric generators were built. Coupled with the Three Gorges Hydropower Station's own two 50,000-kilowatt power stations, the total installed capacity reaches 22.5 million kilowatts.

China Three Gorges Corporation announced on the 1st that as of 24:00 on December 31, 2014, the annual power generation of the Three Gorges Hydropower Station reached 98.8 billion kilowatt hours, setting a new world record for the annual power generation of a single hydropower station. , and became the hydropower station with the highest annual power generation in the world for the first time.

Three Gorges Power Station generated a total of 98.8 billion kilowatt-hours of electricity throughout the year, which is equivalent to reducing raw coal consumption by more than 49 million tons and reducing carbon dioxide emissions by nearly 100 million tons. If the contribution of each kilowatt-hour of electric energy to GDP is calculated as 10 yuan, the clean electric energy generated by the Three Gorges Hydropower Station throughout the year is equivalent to creating nearly 1 trillion yuan of wealth for the country. This has also injected strong impetus into the country’s efforts to “stabilize growth, adjust structure, and benefit people’s livelihood.”

Reference materials

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