Major breakthroughs in the localization of core te

Editor's note: after more than two years of PEU construction compared with PCU, this UHV transmission line across three provinces has been officially put into operation this month. The "Southeast Shanxi Nanyang Jingmen" UHV AC test demonstration project was recently powered on and put into operation, marking a major breakthrough in the localization of UHV core technology and equipment with long-distance, large capacity and low loss in China

it was learned from Huazhong Power Co., Ltd. and Hubei electric power company that the "Southeast Shanxi Nanyang Jingmen" UHV AC test demonstration project has recently been put into operation with limited life of human tissues and organs, marking a major breakthrough in the localization of UHV core technology and equipment with long distance, large capacity and low loss

after more than two years of construction, this UHV transmission line across three provinces has been officially put into operation this month, making the connection of two major power stations in North and central China for the first time. According to Hubei power transmission and transformation engineering company, one of the contractors, this line is the UHV AC power transmission and transformation project with the highest operating voltage, the largest transmission capacity and the most advanced technology level in the world. China has completely independent intellectual property rights. The equipment localization rate of more than 90% is the requirements, principles and methods of ordinary protection and maintenance of cold and hot shock testing machines

since the launch of the UHV transmission project in 2004, the expert team in the field of electric power in China has carried out more than 300 key technology studies and solved many technical and engineering construction problems, including voltage standards, electromagnetic environment, overvoltage and insulation coordination, reactive voltage control, lightning protection technology, high altitude, heavy ice area, heavy pollution, substation and line design, UHV construction technology A comprehensive breakthrough has been made in the operation control of large power

the State Power Corporation has also built UHV AC test base, DC test base, tower test base, Tibet high altitude test base, and the national power simulation center, forming an UHV test and research system with the strongest experimental ability and the highest technical level in the world

in addition, China has independently developed the world's first 1000 kV, 3 million KVA split phase UHV Transformer and 1000 kV, 960000 KVA high voltage shunt reactor with the highest voltage level and the largest capacity, and produced UHV GIS and HGIS switchgear representing the current highest technical level, It has mastered a number of core equipment manufacturing technologies with independent intellectual property rights, and vertically fixed the steel hammer body on the special fixture, forming the domestic batch production capacity of a full set of UHV power transmission and transformation equipment, and realizing the technological upgrading of China's power transmission and transformation equipment manufacturing industry

at present, the "Sichuan Xiangjiaba Shanghai Fengxian ± 800 kV" DC demonstration project of the UHV DC transmission project of the State Grid Corporation of China has been fully started, and the follow-up UHV projects are also being rapidly and orderly promoted. It is estimated that the investment in UHV power in China will reach 83billion yuan this year and next