Journal of Jishou University(Natural Sciences Edition)

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Analysis of Lightning Protection and Grounding Accident of 35 kV Fuse

HU Haize, ZENG Shuiling, SUN Qianfang, LIANG Bing, WANG Lin, FANG Mengge, HU Feiyu, MO Yi   

  1. (1. School of Information Science and Engineering,  Jishou University, Jishou 416000, Hunan China; 2. State Grid Chengzhou Power Supply Company,  Chengzhou 423000, Hunan China; 3. College of Science and Technology,  Changsha University of Science & Technology, Changsha 410000,  China)
  • Online:2019-09-25 Published:2019-11-12


This paper analyzes the causes of fuse blowout caused by lightning in a 35 kV substation, and proposes lightning protection measures such as adding lightning rod, replacing the grounding body, connecting the grounding body with the main grounding grid, and installing protective gaps in parallel. At the same time, the electromagnetic transient simulation software ATP-EMTP is used to simulate the grounding resistance and the lightning protection effect before and after the protection gap. The simulation results show that connection of the grounding body of the arrester  with the main grounding grid and the protective gap of the fuse can  effectively reduced, the lightning overvoltage amplitude.

Key words: substation, fuse, main grounding grid, protection gap, ATP-EMTP

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