State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
Maintenance & Test Center of EHV Power Transmission Company China Southern Power Grid, Guangzhou 510663, China
EHV Power Transmission Company China Southern Power Grid, Guangzhou 510663, China
Hitachi Energy Switzerland Ltd, Zürich, Switzerland
Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology, Harbin 150080, China
State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China
School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
Department of Electrical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Department of Electrical, Electronic and Information Engineering, University of Bologna, Bologna 40136, Italy
Shandong Taikai Electrical Insulation Co., Ltd., Tai’an 271000, China
PingGao Group CO., Ltd., Pingdingshan 467001, China
China XD Group Co., Ltd., Xi’an 710075, China
Jiangsu Jinxin Electric Appliance Co., Ltd., Yangzhou 225202, China
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Abstract
The construction of the future energy structure of China under the 2050 carbon-neutral vision requires compact direct current (DC) gas-insulation equipment as important nodes and solutions to support electric power transmission and distribution of long-distance and large-capacity. This paper reviews China's 10-year progress in DC gas-insulated equipment. Important progresses in basic research and industry perspective are presented, with related scientific issues and technical bottlenecks being discussed. The progress in DC gas-insulated equipment worldwide (Europe, Japan, America) is also reported briefly.
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