[The world's first 500 kV economical high voltage AC current limiter]A few days ago, the world's first 500kV/90kA economical high-voltage AC current limiter developed by China Xidian Group successfully completed the manual short-circuit test and was successfully put into operation on the Shun-Guang-A line of the 500kV Guangnan Station. The successful operation of the project has filled the domestic economical AC ultra-large short-circuit current suppression technology gap, provided an economical and reliable solution for the suppression of high-voltage AC short-circuit current, and provided a strong guarantee for the reliable operation of the ultra-high-voltage large power grid. Editor/Xu Shengpeng
On April 29, 2026, the Chongqing Guizhou Back to Back Interconnection Project (Guizhou side) started construction in Xishui, Zunyi. Southern Power Grid invested 580 million yuan and plans to put it into operation in June 2027. The project involves the construction of 87.9 kilometers of transmission lines and 179 iron towers, connecting the national and southern power grids. The project is located in the mountainous area of northern Guizhou, and needs to overcome karst geology and 352 crossing difficulties. After being put into operation, it will meet the annual growth demand of 6.4% and 7.8% of the load in Chongqing and Guizhou. Editor/Cheng Liting
On April 27, 2026, the cumulative sales volume of natural gas in the Sichuan Chongqing exploration area of Daqing Oilfield has exceeded 5 billion cubic meters, reaching 5.03 billion cubic meters, and the daily gas production has remained stable at 5.7 million cubic meters, injecting strong momentum into the construction of the Chengdu Chongqing economic circle and national energy supply guarantee. Editor/Cheng Liting