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| 超高压输电线路雷击事故分析及保护措施 | |
| 引用本文： | 蒋国文,吴亮,安莉,张英华,姜伟军.超高压输电线路雷击事故分析及保护措施[J].电瓷避雷器,2008(3):34-37. |
| 作者姓名： | 蒋国文 吴亮 安莉 张英华 姜伟军 |
| 作者单位： | 1. 安徽淮南供电公司,安徽,淮南,232007 2. 西安电瓷研究所,西安,710077 3. 中油辽河工程有限公司,辽宁,盘锦,124010 4. 陕西送变电公司,西安,710014 |
| 摘 要： | 介绍了可控放电避雷针的保护原理和线路避雷器的保护原理以及超高压输电线路典型雷击障碍的情况,并对障碍原因进行了分析和探讨。当被保护对象遭受绕击概率允许达到0.1%时,可控放电避雷针的保护角可达66.4°。对主要参数绕击概率和保护范围而言,可控放电避雷针的保护特性明显优于富兰克林避雷针;500 kV线路在雷电活动强的地区安装一组金属氧化物避雷器,即使杆塔冲击接地电阻达40Ω,耐雷水平也能达350kA,即装一组金属氧化物避雷器基本上能满足线路防雷要求。 |
| 关 键 词： | 线路避雷器 绕击 防雷措施 可控放电避雷针 |
Analysis on Lightning Striking Fault and Lightning Protection Measures for UHV Transmission Line |
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| JIANG Guo-wen,WU Liang,AN Li,ZHANG Ying-hua,JIANG Wei-jun.Analysis on Lightning Striking Fault and Lightning Protection Measures for UHV Transmission Line[J].Insulators and Surge Arresters,2008(3):34-37. | |
| Authors: | JIANG Guo-wen WU Liang AN Li ZHANG Ying-hua JIANG Wei-jun |
| Abstract: | The protection philosophy using controlled discharge lightning rod and using line MOA is given and a typical lightning striking fault on EHV transmission line is described.When the probability of shielding failure of 0.1% is allowed,the protection angle of controlled discharge lightning rod can reach 66.4 ℃.In respects of shielding failure and protection sphere,the controlled discharge lightning rod is obviously superior to Franklin rod.Installation of one MOA set on 500kV transmission line at thunderous area can basically meet lightning protection requirement of transmission line.Even with impulse ground resistance of tower up to 40 Ω,the lightning protection level can reach 350 kV. |
| Keywords: | shielding failure lightning protection measures lightning rod line arrester |
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