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Study on differentiated lightning protection for 10kV distribution lines
  • +2
  • Chang Feng,
  • Shaonan Chen,
  • Jinsheng Su,
  • Shoufeng Ma,
  • Shouxiao Ma
Chang Feng
Qinghai University
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Shaonan Chen
China Southern Power Grid Co Ltd
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Jinsheng Su
State Grid Corporation of China
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Shoufeng Ma
State Grid Corporation of China
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Shouxiao Ma
Qinghai University

Corresponding Author:[email protected]

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Abstract

Distribution lines are susceptible to induced lightning overvoltage and lightning accidents, the installation of lightning protection facilities on the distribution line can effectively reduce the impact of induced lightning overvoltage on the line, the conventional lightning protection facilities are installed without taking into account the topography of the line is located in the problem, resulting in poor technical economy, there is a certain degree of blindness. This paper establishes the induced lightning overvoltage calculation model in ATPDraw, simulates and analyses the level of induced lightning resistance of the line. And according to the topographic and geomorphological characteristics of Guangxi, distribution network line tower spacing, conductor type and regional minefield level, the distribution line lightning protection level is divided into A, B, C three levels, and different lightning protection schemes are used for them. Wen through the distribution line lightning protection facilities differentiation research, can effectively reduce the impact of induced lightning overvoltage on the line, improve power supply reliability, reduce operating costs, while the relevant conclusions of the study can guide the production practice, reduce the pressure of the first-line workers overhaul.