State Grid Jibei Electric Power Company Limited

State Grid Electric Power Research Institute

North China Electric Power Research Institute Co., Ltd.

Beijing Guodian Tong Network Technology Co., Ltd

State Grid Qinhuangdao Power Supply Company

Wuhan Nari Limited Company of State Grid Electric Power Research Institute

Yaxin Liu

Jian Wang

Yi Luo

Dong Liang

Xiaoling Zhu

Aimei Yan

Xinling Wu

Man Leng

Jian Zhu

Weiyue Zhou

Sining Wang

Xuefang Tong

Xuemei Wu

Yue Yu

Lingchen Sun

Qin Zhang

Ke Qiao

Haitao Wang

Jiahong Chen

Chuanbo Tian

Wanxing Feng

Shanqiang Gu

Shen Liu

Shuhan Zhang

Xiaolan Li

Lili Zhang

Tiejun Zhao

Yi Yuan

A ground fault locating method for a power distribution network includes: monitoring each phase line of three phase distribution lines, and in the event of occurrence of waves with fault features, performing wave recording to obtain phase line record files; combining the record files corresponding to each of the three phase lines to obtain fault record files; and synthesizing the fault record files to form a transient record file, determining a fault location according to a wave having a maximum change in wave amplitude between two points in the transient record file, and displaying the fault location in a wiring diagram. The ground fault locating method for a power distribution network can significantly improve accuracy of single-phase ground fault detection.

Ground position of the ground fault method for power distribution network, system, and storage medium

A method for determining a lightning hazard distribution of a power network, includes: deriving a shielding failure lightning hazard distribution of the power network and a back flashover lightning hazard distribution of the power network from the number of ground lightning in each grid and ranges of hazardous currents, and deriving a historical lightning hazard distribution of the power network from a lightning faults database of the power network and the grids; and determining the lightning hazard distribution of the power network by integrating the shielding failure lightning hazard distribution of the power network, the back flashover lightning hazard distribution of the power network and the historical lightning hazard distribution of the power network.

Method for determining lightning hazard distribution of power network

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Beijing, China

Yaxin Liu