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Improving the lightning performance of distribution lines using high CFO structures

机译:使用高CFO结构提高配电线路的闪电性能

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摘要

The paper investigates the improvement of the lightning performance of distribution lines due to the increase in the line critical flashover voltage (CFO) from 95 kV to 170 kV. Initially, a research project on lightning protection carried out in the 1980's and the proposed modifications on the distribution line structures in order to increase their CFO are described. A methodology for the lightning flashover rate assessment, including the variation of the soil resistivity in a probabilistic model, is presented. Additionally, field data on the lightning performance of two rural distribution feeders, one with 95 kV CFO and the other with 170 kV CFO, are analyzed. Altogether, the feeders are approximately 1200 km long and are located in the same region. Their lightning performance refers to four years of operation and 3800 sustained power outages. The field data are compared with the theoretical assessment carried out using the proposed methodology as well as with the methodology used in the 1980's, and the results are analyzed.
机译:本文调查了由于线路临界闪络电压(CFO)的增加,从95 kV到170 kV增加,改善了分配线的闪电性能。最初,描述了在1980年代进行的雷电保护研究项目以及用于增加其CFO的分配线结构的提出修改。提出了一种避雷器速率评估的方法,包括概率模型中土壤电阻率的变化。此外,分析了有关两种农村分配馈线的雷电性能的现场数据,分析了具有95 kV CFO和其他具有170 kV CFO的另一个。完全,馈线长约1200公里,位于同一区域。他们的闪电性能指的是4年的运营和3800个持续停电。将现场数据与使用所提出的方法以及1980年代使用的方法进行比较,并分析结果。

著录项

  • 来源
    《Electric power systems research》 |2021年第5期|107063.1-107063.8|共8页
  • 作者单位

    Univ Fed Minas Gerais Elect Engn Dept Belo Horizonte MG Brazil|Univ Fed Minas Gerais Grad Program Elect Engn Belo Horizonte MG Brazil;

    Univ Fed Minas Gerais Grad Program Elect Engn Belo Horizonte MG Brazil;

    Univ Fed Minas Gerais Elect Engn Dept Belo Horizonte MG Brazil|Univ Fed Minas Gerais Grad Program Elect Engn Belo Horizonte MG Brazil;

    Univ Fed Minas Gerais Elect Engn Dept Belo Horizonte MG Brazil|Univ Fed Minas Gerais Grad Program Elect Engn Belo Horizonte MG Brazil;

    Univ Fed Minas Gerais Elect Engn Dept Belo Horizonte MG Brazil;

    Minas Gerais Energy Co CEMIG Distribut Act Management Superintendence Belo Horizonte MG Brazil;

    Univ Fed Minas Gerais Grad Program Elect Engn Belo Horizonte MG Brazil|Minas Gerais Energy Co CEMIG Distribut Act Management Superintendence Belo Horizonte MG Brazil;

  • 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

    Lightning; Distribution lines; Induced voltages;

    机译:闪电;分配线;感应电压;

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