The State Grid Corporation of China stated yesterday that the UHV transmission project has been listed in the “Twelfth Five-Year Planâ€. According to Zhang Ke, an expert from the State Grid Development and Planning Department, nuclear power and wind power include hydropower as clean energy, and future development will depend on the construction of UHV power grids. Taking wind power as an example, the state plans wind power to reach an installed capacity of more than 150 million kilowatts by 2020, but currently the installed capacity of the eight wind power bases has already accounted for 80% of the total installed capacity, among which the five wind power bases are all located in the North China region (North China). In the northwest region and the northeastern region, only Xinjiang, Gansu, Inner Mongolia and Jilin provinces and autonomous regions have 80 million kilowatts of wind power installed, so there is a big problem in wind power consumption. Only through the UHV grid can such concentrated and unstable power be transmitted to the North China and China Medium Load Centers. He said that after the UHV was built, it could develop wind power on a large scale and achieve high efficiency consumption, thus controlling the once severe wind curtailment at 1%. According to the national grid plan, during the 12th Five-Year Plan period, the state will invest more than 500 billion yuan to build a “three vertical and three horizontal†UHV AC backbone grid and 11 UHV DC transmission projects. “The investment is equivalent to two Three Gorges Projects. "The investment for exchange UHV accounts for about 2/3. However, some experts have previously questioned the economics of UHVs and believe that the UHV power transmission in UHV transmission projects is costly and difficult to make profit. For example, the use of AC UHV power transmission in air-cooled units built in Shanxi, Shaanxi, and Mongolia to the south, is conservatively estimated. It takes 15% to 16% more coal than railways to transport coal to the port for transportation to the south. According to the State Grid Corporation, the shape of the power grid has changed from the “long-chain†of the northeast, north, and central China to the “mass-like†structure of North China, East China and Central China (hereinafter referred to as “Sanhua Power Gridâ€), and to the northwest, northeast, and south. Through the direct link between the three synchronous power grids, “Sanhua Power Grid†will increase the proportion of coal transmission in the “Three West†areas in the main coal production area from the current 20:1 to 6:1, and be able to make full use of lignite and coal. China Coal, coal gangue and other resources; In addition, the power of large coal-fired power plants is transported to the East Central Load Center by UHV. After the cost of transmission links is removed, the electricity price of the grid is still lower than the average on-grid electricity price of local coal, 0.06-0.13 yuan/kWh. At the same time, it also saved 15 million kilowatts of installed capacity, saved investment of 56 billion yuan in power supply, and accepted 145 million kilowatts of new clean energy, equivalent to an annual reduction of 450 million tons of carbon dioxide, and an annual reduction of 4.5 billion yuan in environmental losses. Extended reading: 23 experts unanimously oppose U.S. investment projects worth more than RMB 300 billion The investment amount is equivalent to two Three Gorges Projects. Experts claim that there are hidden safety problems. The State Grid Corporation believes that the pilot demonstration project is successful and the UHV power grid is safe and reliable. According to the plan of the State Grid Corporation of China (the "State Grid Corporation"), during the "12th Five-Year Plan" period, China will invest more than 500 billion yuan to build a "three vertical and three horizontal" UHV AC backbone grid and 11 UHV DC transmission projects. Among them, the exchange of UHV investment accounted for about 2/3, the more the 300 billion yuan, "the amount of investment is equivalent to two Three Gorges Project." At present, the demonstration project expansion project has been approved. If the Ximeng-Nanjing UHV project is also approved, it means that China's UHV will formally enter a large-scale development stage. Ding Gongyang said: "The amount of exchange investment is 2-3 times that of direct current, and it is expected that the loss will be no less than high-speed railway. If the State Grid shifts the loss to electricity tariffs, it will inevitably raise the price of electricity, and it will ultimately be paid by the entire people." Protecting Wire Mesh,Wire Mesh For Trees,Wire Mesh Around Tree,Chicken Wire Around Tree Trunk Anping Xinghong Metal Wire Mesh Co.,Ltd , https://www.xinghongwiremesh.com