After the Wudongde hydropower station, another large-scale hydropower project on the Jinsha River is about to be fully put into operation. This is the Baihetan hydroelectric power station. So why is the China-built Baihetan hydroelectric power station even jealous of the United States? UNITED STATES ? Is it really better than Baihetan Hydropower Station? Are the Three Gorges even more powerful? And what kind of black technology is used in this hydroelectric plant? Can it even surpass the Three Gorges Dam? In this issue, we will talk about this super hydroelectric power plant project. Don't forget to give me three circles.
The picture shows Baihetan Hydropower Station
The location of Baihetan Hydropower Station is located in the upper reaches of the Yangtze River, in the section of the Jinsha River. The resources here are very rich. In the pHowever, due to technical conditions, restrictions and inconvenient transportation, it is difficult for China to develop hydropower resources on the Jinsha River. However, with the expansion of large-scale infrastructure construction in China, railways and highways have been built here, and the construction of large-scale hydropower plants is naturally inseparable. Large engineering machines, equipment and raw materials, without infrastructure support, it is difficult to imagine that large hydroelectric power plants can be built here.
The photo shows the hydroelectric power station under construction
As we all know, the Three Gorges Dam is the largest hydroelectric project in the world, and its annual output of electricity is up to 120 billion kilowatt hours, equivalent to Shanghai. It represents two thirds of annual consumptionthe electricity. In this case, how does the Baihetan hydropower plant challenge the status of the Three Gorges? First of all, the construction of Baihetan is more difficult than that of the Three Gorges Hydropower Station. After all, it is limited by terrain. Unlike the Three Gorges, which is more open and has more convenient transportation, Baihetan is a mountainous area. the difficulty of an overall construction is considerably increased.
Second, the height of the dam of this hydroelectric power station directly exceeds the Three Gorges Dam. In order to intercept the Yangtze River, the Three Gorges Hydropower Station uses a concrete gravity dam, which can resist water pressure by leaning. on its huge own weight, but Baihe The height of the Tan Hydropower Station Dam reaches 295 meters, which is more than 100 meters higher than the Three Gorges Dam. That ifalso means that the dam will obviously support greater water pressure. cannot withstand the huge water pressure, so this hydroelectric power station uses an arch. The design of the force dam can directly transmit the huge pressure in the reservoir area to the mountains on both sides, thereby reducing the pressure on the dam. However, this also increases the difficulty of the barrage. construction and requires a lot of calculations at the beginning to get the best construction data.
The photo shows the generator set of the hydroelectric power station
Finally, it is the generator set used by the Baihetan hydropower station. You should know that the total installed capacity of. The power of the Three Gorges Dam reaches 22.5 million kilowatts. It took dozens of production units to reach this power. Baihetan Hydropower Station is equipped with only 16 generators, but as its single installed capacity reaches 1 million kilowatts, this also means. that the total installed capacity of the Baihetan hydroelectric plant exceeds that of Iraq. Taipu ranks second in the world. More importantly, the generator set used in this hydropower station was independently developed by Harbin Electric Group and is the most advanced hydroelectric generator in the world. The Three Gorges Dam is Most of the generator technologies used are imported from abroad.
Once put into operation, the Baihetan hydropower station will become a new important node in the transmission of electricity from west to east of China, at the same time relying on Jinsha. Thanks to huge hydropower advantages of the Yangtze River and efficient power generation units, the power generation capacity of Baihetan is expected to even exceed that of the Three Gorges in the future andto become the hydroelectric power station with the largest electricity production capacity in the world. A vital role in ensuring China's energy upgrade and guaranteeing the population's access to electricity. Played an immeasurable role.
Which is larger, the Baihetan Hydroelectric Power Station or the Three Gorges Hydroelectric Power Station?
On November 5, 2022, the largest hydroelectric power station in the world under construction, the 15th unit of the Baihetan hydroelectric power station, one million kilowatts of water. The turbine-generator unit was put into operation to produce electricity.
A hydroelectric power station is made up of a hydraulic system, a mechanical system and an electrical energy production device. This is a water conservation project that converts water energy into electrical energy. production requires uninterrupted use of water energyin hydroelectric power stations. Through the construction of hydropower plant reservoir systems, the distribution of water resources in time and space is artificially adjusted and changed to achieve sustainable use of water resources.
In order to effectively convert the energy of the water of the reservoir into electrical energy, the hydroelectric power station must be carried out through an electromechanical water system, consisting mainly of pressure diversion pipes, turbines hydraulics, generators and tailraces. pipes. The electromechanical water system realizes the conversion of water energy into mechanical energy through the cooperation of pressurized water pipes and hydraulic turbines.
Through the connecting relationship between the hydraulic turbine and the generator, the goal of using water energy for electric power generation is finally achieved. The amount of energyof water in the tank which is converted into electrical energy is closely related to the force exerted at the nozzle of the pressure diversion pipe. Therefore, the factors that affect the force at the water diversion pipe nozzle, such as the tank. The volume of water, the water level of the tank and the inclination angle of the pressure diversion pipe directly affect the efficient conversion of water energy into electrical energy.
Thus, the process of producing electrical energy in a hydroelectric power plant consists of coordinating the operation between the reservoir and the electromechanical water system and between the different parts of the electromechanical water system. The hydroelectric power station system is essentially. an electromechanical coupling system to water.
The Three Gorges Hydroelectric Power Station is larger than the Baihetan Hydroelectric Power Station. “The main project of the damof the Three Gorges consists of the main building and the diversion project, with a total length of approximately 3,335 m and a dam top elevation of 185 meters. The installed capacity of the Three Gorges Hydropower Station reaches 22.4 million kilowatts, making it the world's largest hydropower plant and clean energy production base.
The normal water storage level of the Baihetan Hydropower Station reservoir is 825 meters, with a corresponding storage capacity of 20.6 billion cubic meters. The underground plant is equipped with 16 units, with a planned initial installed capacity of 16 million kilowatts and. an average electricity production over several years of 60.24 billion kilowatt hours. The plant plans to start generating electricity with the first batch of units in 2021, and the project will be completed in 2022. Once the power plant is completed, it will become the second largestlargest hydroelectric power station in China after the Three Gorges hydroelectric power station.Detailed information:
Construction scale of the Three Gorges Hydroelectric Power Station:
The units of the Three Gorges Hydroelectric Power Station Gorges are arranged at the rear of the dam, 32 hydroelectric units of 700,000 kilowatts have been installed, including 14 on the left bank, 12 on the right bank, 6 underground and two power supply units of 50,000 kilowatts, for a total installed capacity of 22.5. million kilowatts, far surpassing the Itaipu hydroelectric plant in Brazil, is the second largest in the world.
The initial plan for the Three Gorges Power Plant is 26 units of 700,000 kilowatts, which means an installed capacity of 18.2 million kilowatts and an annual electricity production of 84.7 billion kilowatt hours. Later, an underground power plantwas built in the “Baishijian” mountain of the Right Bank Dam, and six 700,000 kilowatt hydroelectric generators were built. Coupled with the two 50,000 kilowatt power plants of the Three Gorges Hydroelectric Power Station, the total installed capacity reaches 22.5 million kilowatts.
China Three Gorges Corporation announced on the 1st that as of midnight on December 31, 2014, the annual power output of the Three Gorges Hydropower Station reached 98.8 billion kilowatt hours, setting a new world record for electricity production. annual electricity production of a single hydroelectric power station and for the first time became the hydroelectric power station with the highest annual electricity production in the world.