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中国电机工程学报 2008, 28(25) 25-29 DOI:
ISSN: 0258-8013 CN: 11-2107/TM |
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| 高电压技术 |
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改进先导传播模型法500 kV架空线路雷电绕击分析 |
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魏本刚 傅正财 袁海燕 任晓明 |
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上海交通大学电气工程系 上海交通大学电气工程系 上海交通大学电气工程系 上海交通大学电气工程系 |
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摘要：
用先导传播模型法(leader progression model，LPM)分析架空输电线路的防雷特性的关键在于主要模型参数、先导起始和拦截判据的确定。参考国际上对长间隙放电研究的成果，考察LPM中参数和判据的适用性，提出对LPM的判据改进。并且考虑雷云的背景静电场和线路运行电压的影响，建立改进的先导模型法。经改进的LPM应用于平原和山区地形条件下的500 kV架空线雷电绕击分析计算。改进前后的计算结果与运行经验数据的对比分析表明，该改进先导模型法的计算结果与我国500 kV架空线路的运行经验数据相吻合。 |
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关键词：
长空气间隙
先导传播模型
雷电
绕击
静电场
输电线路
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Analysis of Lightning Shielding Failure for 500 kV Overhead Transmission Lines Based on Improved Leader Progression Model |
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WEI Ben-gang FU Zheng-cai YUAN Hai-yan REN Xiao-ming |
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Abstract:
While applying the leader progression model (LPM) to analyze the lightning shielding characteristic of overhead transmission lines, the definition of the main model parameters and inception criterion is of the most importance. Based on the recent achievements in long-gap discharge studies, the application of the LPM parameters and criterions was investigated. An improved LPM method was proposed. In the establishment of the improved LPM method, the influence of the background electric field produced by the lightning cloud and the operation voltage of the overhead transmission lines were also taken into account. The improved model is applied to the shielding failure analysis of 500 kV transmission lines, considering the flat and slope terrain conditions. The calculated results before and after the model improvement were compared with the field operating data of 500 kV transmission lines. It is shown that the improved LPM results are in accord with the operation experience of the 500 kV transmission lines. |
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Keywords:
long-gap discharge
leader progression model
lightning
shielding failure
static electric field
transmission line
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收稿日期 2007-07-09 修回日期 1900-01-01 网络版发布日期 |
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DOI: |
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基金项目:
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通讯作者: 傅正财 |
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作者简介: |
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作者Email: zcfu@sjtu.edu.cn |
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| 参考文献： |
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| 本刊中的类似文章 |
| 1．胡建林 洪川 杜林 米彦 孙才新.基于有限元弱解式的棒-板长空气间隙先导放电空间电场仿真研究[J]. 中国电机工程学报, 2008,28(10): 148-154 |
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| Copyright by 中国电机工程学报 |
