China’s CSG commissions world’s first ±550 kV DC GIS

China’s second largest grid company, China Southern Power Grid Corporation (CSG), in collaboration with China Southern Power Grid Research Institute, China Southern Power Grid Ultra-High Voltage Company, Xikai Electric Company, Xi'an Jiaotong University, and others, has successfully commissioned the world’s first ±550 kV, direct current (DC) gas-insulated switchgear (GIS) at the ±500 kV DC Guizhong […]