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电网技术  2012 

高海拔现场与人工气候室下绝缘子交流污闪特性的比较

, PP. 163-169

Keywords: 高海拔,现场试验,人工气候室,绝缘子,污闪特性

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Abstract:

高海拔下污秽绝缘子串电气性能将降低,国内外在高海拔现场和人工气候室对高海拔地区污秽绝缘子闪络特性开展了大量研究,但人工模拟试验结果与自然环境的试验结果等价性的问题罕见报道,分别在不同海拔的高海拔现场和人工气候室开展了不同型式绝缘子交流污闪特性对比试验研究,试验结果表明蒸汽雾法下绝缘子交流污闪电压比湿污法下的高;随着海拔的增加,绝缘子串交流污闪电压将降低,其气压影响特征指数与绝缘子型式、盐密等有关;人工模拟试验结果与自然环境的试验结果具有等价性关系的研究结果可为高海拔地区输电线路外绝缘的选择和设计提供参考。

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