1000kV单回特高压交流输电线路的绕击防雷保护Lightning Shielding Failure Protection for 1000 kV Single Circuit UHVAC Transmission Line
王茂成;张治取;滕杰;程学启;李强;季善浩;董海峰;
摘要(Abstract):
风雨在空中的漂移和空气中不均匀介质的存在使闪电的轨迹呈不规则曲线形。考虑自然闪电轨迹的随机性和雷电主先导与次先导并存现象等因素,有必要引入动态防雷保护角概念,建议特高压交流线路中地线(针)对导线的实际保护角形成的角平分线应与雷电先导的来向一致,并应计及垂直档距和水平档距的比值和风速的影响。根据杭州1962—1988年220kV新杭I线雷击统计结果,认为特高压线路防雷绕击分析应结合塔头和档内中央线路两处的防雷情况,并分别进行了防雷保护角计算与比较。
关键词(KeyWords): 单回特高压交流线路;动态防雷保护角;风速;塔头处绕击;档内中央绕击;高电压技术
基金项目(Foundation):
作者(Author): 王茂成;张治取;滕杰;程学启;李强;季善浩;董海峰;
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DOI:
参考文献(References):
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