State Grid Hubei Electric Power Research Institute

China Railway Siyuan Survey and Design Group Co., Ltd.

Wuhan Power Supply Design Institute Co., Ltd.

State Grid Hubei Wuhan Electric Power Supply Company

Shenzhen Metro Construction Group Co., Ltd.

State Grid Hubei Electric Power Co., Ltd.

Wuhan Xindian Electric Co., Ltd.

Zeyang Tang

Zhichun Yang

Fan Yang

Wei Hu

Wei Jiang

Jian Wang

Ling Ruan

Yu Shen

Wanting Deng

Chao Cai

Yao Yao

Ling Qiu

Lei Su

Zhou Ge

Zhi Tian

Yang Lei

Xiaoxun Deng

Fangbin Yan

Yong Yao

Shuang Chen

Lingxiao Gao

A method for analyzing a correlation between rail transit and direct current (DC) magnetic bias of a transformer includes the steps of, A: obtaining a current of a feed cable and a DC magnetic bias current: measuring the feed cable current in rail transit and the DC magnetic bias current of a transformer in a power grid within a certain period by a monitoring apparatus; B: calculating a characteristic quantity of the feed current within the measurement period based on the obtained current of the feed cable; C: calculating a characteristic quantity of the DC magnetic bias current within the measurement period based on the DC magnetic bias current; and D: calculating a support degree and a confidence coefficient based on the calculated characteristic quantity of the feed current and the calculated characteristic quantity of the DC magnetic bias current, and generating a correlation rule.

Method for analyzing correlation between rail transit and direct current (DC) magnetic bias of transformer

A device for simulating intermittent arc grounding faults in a power distribution network includes a sliding rail, a first and a second support frames, an insulated electrode disk, and an electrode disk motor. The first support frame is fixed on the left side of the slide rail, and the position of the second support frame relative to the first support frame can be adjusted through the sliding rail. The second support frame is provided with an electrode disk motor for driving the insulated electrode disk to rotate. An upper and a lower conductive bars are installed on the first support frame, their adjacent ends provided with an upper and a lower arc-shaped conductor sheets, and the insulated electrode disk having two circles of conductive pillars is located between the conductor sheets. The conductor sheets are respectively installed on the side of the conductive bars close to the conductive pillar.

Device and method for simulating intermittent arc grounding faults of power distribution network

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Hubei, China

Zeyang Tang