The reporter learned from Shandong State Grid Corporation that during the “Twelfth Five-Year Plan†period, Shandong Province will build an ultra-high voltage transmission line with a voltage rating of up to one million volts for the first time, turning the coal directly into a current through the air corridor for long-distance transport. According to the plan, Shandong Province will begin construction of the Tin-Gun-Nanjing 1000-kilovolt AC UHV project this year and deliver 5 million loads to Shandong, accounting for one-ninth of the highest load of the province's power grid.
Compared with the main structure of the 500 kV ultra-high voltage grid commonly used in Shandong Province and developed countries in the world, UHV has the advantages of long distance, large capacity, and low loss, and can better meet the needs of the rapid development of the national economy for electricity. Known as the "electricity highway." "The 1000 kV AC UHV transmission power is close to 5 million kilowatts, which is about 5 times the 500 kilovolt line. It is important that the farthest transmission distance can be extended by nearly 3 times, and the resistance loss is about 1/4. It can save about 2/3 of the land resources of the corridor corridor.†Pan Jingdong, chief engineer of the State Grid Shandong Corporation, told reporters.
Yin Yonghua, chief engineer of the China Electric Power Research Institute, said that UHV technology will lead a major change in the world's energy transmission methods. It will have a profound impact on human energy use in efficient and green ways. “The traditional 500 kV EHV economical transmission distance is generally 500-600 km, and the UHV transmission distance will reach 1500 km or even longer; we used to have to travel long distances to transport coal to the coastal areas with more electricity, and then generate electricity. With the UHV, the power plant can be built directly at coal pits, turning coal into current through air corridors for long distance transportation.â€
“The construction of UHV is the highlight of the Shandong province’s strategy of “transmitting electricity into the power gridâ€, effectively alleviating the tight electricity supply during peak winter and summer electricity usage in Shandong Province. The load of a 1000 kV line will reach 5 million kilowatts. One-ninth of the province's highest load on the grid is equivalent to taking up all of the electricity used by Shandong's nearly 95 million people.†Qiu Xizhao, director of the Shandong Power Dispatching Center, said, “One line has a full load of electricity for a day. It will reach 120 million degrees, which is equivalent to transporting 700 wagons and 14 trains of coal to our province every day. It is equivalent to building a dedicated railway line."
According to the plan of the State Grid, during the “12th Five-Year Plan†period, China will vigorously construct UHV power transmission channels. By 2015, China will build the North China, East China, and Central China (“Three Chinaâ€) UHV power grids, forming a “three vertical and three horizontal†loop. network". It is reported that Shandong Province will start construction of the Ximeng-Jinan-Nanjing 1000kV AC UHV project this year. In addition, it will actively promote the northern Shaanxi-Jinan-Weifang 1000kV exchange, Humeng-Qingzhou ±800kV DC. The preparatory work for high-voltage transmission lines has been vigorously approved and started early.
Compared with the main structure of the 500 kV ultra-high voltage grid commonly used in Shandong Province and developed countries in the world, UHV has the advantages of long distance, large capacity, and low loss, and can better meet the needs of the rapid development of the national economy for electricity. Known as the "electricity highway." "The 1000 kV AC UHV transmission power is close to 5 million kilowatts, which is about 5 times the 500 kilovolt line. It is important that the farthest transmission distance can be extended by nearly 3 times, and the resistance loss is about 1/4. It can save about 2/3 of the land resources of the corridor corridor.†Pan Jingdong, chief engineer of the State Grid Shandong Corporation, told reporters.
Yin Yonghua, chief engineer of the China Electric Power Research Institute, said that UHV technology will lead a major change in the world's energy transmission methods. It will have a profound impact on human energy use in efficient and green ways. “The traditional 500 kV EHV economical transmission distance is generally 500-600 km, and the UHV transmission distance will reach 1500 km or even longer; we used to have to travel long distances to transport coal to the coastal areas with more electricity, and then generate electricity. With the UHV, the power plant can be built directly at coal pits, turning coal into current through air corridors for long distance transportation.â€
“The construction of UHV is the highlight of the Shandong province’s strategy of “transmitting electricity into the power gridâ€, effectively alleviating the tight electricity supply during peak winter and summer electricity usage in Shandong Province. The load of a 1000 kV line will reach 5 million kilowatts. One-ninth of the province's highest load on the grid is equivalent to taking up all of the electricity used by Shandong's nearly 95 million people.†Qiu Xizhao, director of the Shandong Power Dispatching Center, said, “One line has a full load of electricity for a day. It will reach 120 million degrees, which is equivalent to transporting 700 wagons and 14 trains of coal to our province every day. It is equivalent to building a dedicated railway line."
According to the plan of the State Grid, during the “12th Five-Year Plan†period, China will vigorously construct UHV power transmission channels. By 2015, China will build the North China, East China, and Central China (“Three Chinaâ€) UHV power grids, forming a “three vertical and three horizontal†loop. network". It is reported that Shandong Province will start construction of the Ximeng-Jinan-Nanjing 1000kV AC UHV project this year. In addition, it will actively promote the northern Shaanxi-Jinan-Weifang 1000kV exchange, Humeng-Qingzhou ±800kV DC. The preparatory work for high-voltage transmission lines has been vigorously approved and started early.