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电网技术  2007 

直流输电线路Y型绝缘子串污闪特性研究

, PP. 28-31

Keywords: Y型绝缘子串,高压直流输电,人工污秽试验,污闪电压

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Abstract:

开展了用于?500kV线路Y型绝缘子串的人工污秽试验研究,绝缘子染污采用固体层法,试验结果表明,Y型绝缘子串与悬垂串相比,直流污秽闪络电压可提高约9%。在?500kV输电线路上采用Y型绝缘子串时,在不同污区单串采用的绝缘子片数可比单悬垂串略微减少。Y型绝缘子串用于重污秽地区输电线路时,可减小杆塔尺寸,降低工程造价。文章还提出了在不同污秽地区所需要的绝缘子片数,为?500kV直流输电线路设计中采用Y型绝缘子串提供了参考依据。

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