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Calculation of surface electric field on UHV transmission lines under lightning stroke

机译:雷击下特高压输电线路表面电场的计算

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摘要

Lightning is the major cause of interruptions in power transmission lines. Ultra-high voltage (UHV) AC transmission line has been put into operation in China. Due to the large tower height up to 90 m and the high operation voltage up to 1000kV, the shielding failure probability increase obviously. Nowadays the leader progression model is an advanced method to evaluate the shielding failure probability of transmission lines. The surface electric field is the key issue for lightning failure analyzing, because the upward leader inception mainly depends on the surface electric field. In this paper, the lightning leader model is introduced. A charge simulation method based piecewise linear function is adopted to analyze the surface electric field on phase conductors and ground wires. The influence factors, such as operation voltage, lightning peak current, lightning down leader position, protection angle, on surface electric field were analyzed.
机译:雷电是输电线路中断的主要原因。超高压交流输电线路已在中国投入运营。由于塔高高达90 m,操作电压高达1000kV,因此屏蔽故障的可能性明显增加。如今,领导者级联模型是评估输电线路屏蔽失效概率的一种先进方法。表面电场是雷击故障分析的关键问题,因为向上的引线起始主要取决于表面电场。本文介绍了闪电领导者模型。采用基于分段线性函数的电荷模拟方法,分析相导体和地线上的表面电场。分析了工作电压,雷电峰值电流,雷电引线位置,保护角等因素对表面电场的影响。

著录项

  • 来源
    《Electric power systems research》 |2013年第1期|79-85|共7页
  • 作者单位

    State Key Lab of Control and Simulation of Power Systems and Generation Equipments, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;

    State Key Lab of Control and Simulation of Power Systems and Generation Equipments, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;

    State Key Lab of Control and Simulation of Power Systems and Generation Equipments, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;

    State Key Lab of Control and Simulation of Power Systems and Generation Equipments, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;

    Department of Mathematical Sciences, Tsinghua University, Beijing 100084, China;

    State Key Lab of Control and Simulation of Power Systems and Generation Equipments, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;

    State Key Lab of Control and Simulation of Power Systems and Generation Equipments, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China;

    Electric Power Research Institute, China Southern Power Grid, Guangzhou, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    surface electric field; UHV; transmission lines; leader progression model; charge simulation method;

    机译:表面电场特高压传输线;领导者进步模型;电荷模拟方法;

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