| 输电线路绕击跳闸率的改进电气几何模型 |
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| 引用本文： | 秦海波,李琳,赵志斌.输电线路绕击跳闸率的改进电气几何模型[J].电力科学与工程,2009,25(5). |
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| 作者姓名： | 秦海波 李琳 赵志斌 |
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| 作者单位： | 华北电力大学,电气与电子工程学院,河北,保定,071003 |
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| 摘 要： | 在原有的经典电气几何模型的基础上,提出了相应的改进方法.引入击距系数β来描述雷击输电线路时,避雷线的击距与大地击距的不同.同时对原来计算线路绕击跳闸率的方法进行改进:采用距离差来计算绕击跳闸率.最后采用此种方法,针对典型的单回500 kV酒杯塔,计算和分析了不同保护角和地面倾角时对绕击跳闸率的影响.
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| 关 键 词： | 输电线路 电气几何模型 击距系数 绕击跳闸率 |
Calculation of Shielding Failure Flashover Rate on Electric Transmission Line Based on Improved EGM |
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| Qin Haibo,Li Lin,Zhao Zhibin.Calculation of Shielding Failure Flashover Rate on Electric Transmission Line Based on Improved EGM[J].Power Science and Engineering,2009,25(5). |
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| Authors: | Qin Haibo Li Lin Zhao Zhibin |
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| Affiliation: | SchoolofElectricaland ElectronicEngineering;NorthChina ElectricPower University;Baoding 071003;China |
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| Abstract: | This paper presented improved methods base on the original electric geometry method(EGM),strike distance coefficient was used to describe the differences between the strike distance of lightning conductor and the strike distance of ground when electric transmission line is stroked by lightning.At the same time,this paper improved the calculation method of shielding failure flashover rate,is used to calculate shielding failure flashover rate.At last,this paper for the typical 500kV glass tower calculate and ... |
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