| 钦州110kV燕江线雷击故障统计分析与防雷保护措施 |
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| 引用本文： | 王巨丰,陈宙平,余寿全,陈智勇. 钦州110kV燕江线雷击故障统计分析与防雷保护措施[J]. 电瓷避雷器, 2008, 0(6) |
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| 作者姓名： | 王巨丰 陈宙平 余寿全 陈智勇 |
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| 作者单位： | 1. 广西大学电气工程学院,南宁,530004
2. 钦州供电局,广西,钦州,535000 |
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| 摘 要： | 110 kV燕江线大部分经过电阻率较高的山区,线路跳闸率高。通过燕江线2006年5月—2008年6月雷击故障统计,运用向量电气几何模型分析了雷击故障的原因,得出:高地势、大档距和大接地电阻是造成燕江线跳闸率偏高的三个主要原因。指出采用接地长度最长的放射状接地形式,结合GPF-94降阻剂可有效降低杆塔接地电阻;同时采取将绝缘子原来每串7片增加到每串8～9片,增加塔顶拉线及安装线路避雷器等防雷措施,以提高线路防雷水平。
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| 关 键 词： | 跳闸率 接地电阻 向量电气几何模型 防雷措施 |
The Statistical Analysis of the Lightning Strike on 110 kV Yan-jiang Transmission Line and Its Protective Measures |
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| WANG Ju-feng,CHEN Zhou-ping,YU Shou-quan,CHEN Zhi-yong. The Statistical Analysis of the Lightning Strike on 110 kV Yan-jiang Transmission Line and Its Protective Measures[J]. Insulators and Surge Arresters, 2008, 0(6) |
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| Authors: | WANG Ju-feng CHEN Zhou-ping YU Shou-quan CHEN Zhi-yong |
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| Affiliation: | WANG Ju-feng1,CHEN Zhou-ping1,YU Shou-quan2,CHEN Zhi-yong1 |
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| Abstract: | The 110 kV Yan-jiang transmission line of Qinzhou Power Supply Bureau is situated in mountainous areas of the high earth-resistivity with a very high line trip rate.From statistics of strike failures of the 110kV Yan-jiang transmission line from May 2006 to June 2008,the causes of the lightning faults were analyzed with the vector electrical geometric model.The transmission line's high trip rate contributes to high altitude,long span and high grounding resistance.Utilizing the longest ra-dial profile grounding combined with physical resistance-reducing agent can effectively reduce the tow-er's grounding resistance.Some available methods such as increasing the number of insulator string u-nits from seven to 8-9 units,the pole top wire and installing line arresters to improve the line's light-ning protection level are recommended. |
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| Keywords: | trip rate grounding resistance vector electrical geometric model lightning protec-tion |
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