Study on Lightning Trip Protection for Distribution Lines in a Certain Area of Northern Guangzhou

电工电能新技术 Pub Date : 2021-12-01 DOI:10.1109/ATEEE54283.2021.00018

Qiu Hong, Yuting Chen, Yue He, Zhitao Huang, Xiaotong Huang, Haiying Lu, Yifeng He

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Abstract

In view of the current situation of frequent tripping of 10kV distribution lines in northern mountainous areas of Guangzhou, through the analysis of the causes of line tripping in the past three years, it is found that lightning strike is one of the main factors leading to line tripping. Through the analysis of the natural lightning strikes in the region, the effect of the existing lightning protection facilities is evaluated. Given the lightning protection measures of 10kV distribution lines in the region, the composite lightning protection measures such as adding overhead lightning conductor, adding multi-chamber lightning arrester, and repairing grounding grid resistance are proposed to improve. The working principle and improvement effect of each measure are expounded. After implementing various measures, the lightning conditions and tripping data of a quarter are analyzed and compared. The results show that the comprehensive lightning protection measures effectively reduce the tripping caused by lightning. The actual operation effect verifies the feasibility and effectiveness of the measures proposed in this paper.

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广州北部某地区配电线路雷击跳闸保护研究

针对广州北部山区10kV配电线路频繁跳闸的现状，通过对近三年线路跳闸原因的分析，发现雷击是导致线路跳闸的主要因素之一。通过对该地区自然雷击的分析，对现有防雷设施的效果进行了评价。针对该地区10kV配电线路的防雷措施，提出了增加架空避雷针、增加多室避雷器、修复接地网电阻等复合防雷措施加以改进。阐述了各项措施的工作原理和改进效果。在采取各种措施后，对某季度的雷电情况和跳闸数据进行了分析比较。结果表明，综合防雷措施有效地减少了雷电引起的跳闸。实际运行效果验证了本文所提出措施的可行性和有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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电工电能新技术

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