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绝缘护套对输电线路导线风偏的影响

DONG Xinsheng, ZHANG Dong,GUO Kezhu,MA Hanchao,YANG Yang, ZHANG Jianfeng,Yilizhati·TUERHAN

Guangdong Electric Power（2018）

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Abstract
输电线路导线加装绝缘护套对导线风偏有两方面的影响,一是增加了导线空气绝缘,二是受风面积增大,导致风偏角增大.针对导线加装绝缘护套后,对导线风偏的影响进行分析;采用含绝缘子串的风偏角计算公式,对直线杆绝缘子、耐张引流线(有跳线串、无跳线串)在不同风速下的风偏角进行计算.分析表明:在直线杆导线包覆绝缘护套后,风偏角变化很小,但在引流线上加装绝缘护套后,风偏角有较大增加;绝缘护套能够加强线路的外绝缘作用,而闪络是由于安装工艺或其他防风措施不当引起的.
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Key words
insulation,drain wire,windage yaw,transmission line,beeline pole,insulation sheath
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