公开(公告)号：EP3780040A1

公开(公告)日：2021-02-17

申请号：EP18920773.1

申请日：2018-10-19

申请人： Global Energy Interconnection Research Institute Co., Ltd ,  State Grid Corporation of China

发明人： DONG, Wei ,  GAO, Chong ,  ZHOU, Jianhui ,  PANG, Hui

IPC分类号： H01F38/26 ,  G01R15/18

摘要： Disclosed by an embodiment of the present application is a wideband voltage transformer, comprising: a hollow insulator, metal flanges, fixed flanges, a resistance capacitance voltage-equalizing assembly, a resistance capacitance series-parallel voltage divider, a base, and a signal collecting module; the metal flanges are mounted at two ends of the hollow insulator, the metal flange of a top end of the hollow insulator is connected to a first system, and the metal flange of a bottom end of the hollow insulator is connected to the base; the fixed flanges are mounted at inner walls of the metal flanges, and two ends of the resistance capacitance voltage-equalizing assembly are respectively connected to the fixed flanges; a top end of the resistance capacitance series-parallel voltage divider is connected to the first system, and a bottom end of the resistance capacitance series-parallel voltage divider is connected to the signal collecting module.

公开(公告)号：EP4336979A1

公开(公告)日：2024-03-13

申请号：EP22798602.3

申请日：2022-04-28

申请人： State Grid Corporation of China ,  State Grid Smart Grid Research Institute Co., Ltd.

发明人： LIU, Shan ,  LIU, Zehong ,  WANG, Shaowu ,  GUO, Xianshan ,  HUANG, Yong ,  ZHANG, Jin ,  SONG, Shengli ,  LI, Jinzhong ,  LU, Licheng ,  LI, Yunpeng ,  ZHOU, Jianhui ,  WANG, Hang ,  JIANG, Zhe ,  HOU, Junyi

IPC分类号： H05K7/20

摘要： A high-voltage bushing, comprising a conductive rod and an air cooling device. The conductive rod is internally provided with an air duct, and the air duct comprises an air inlet and an air outlet. The air cooling device comprises at least one fan, and the fan is configured to output airflow so as to blow the airflow into the air duct through the air inlet.