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电网技术  2006 

布置方式对直流绝缘子串人工污秽闪络特性的影响

, PP. 11-14

Keywords: 布置方式,人工污秽,直流绝缘子串,闪络特性,高电压与绝缘技术

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Abstract:

直流绝缘子串布置方式对污闪电压有影响,以2种典型直流瓷绝缘子(XZP-210和XZP-300)为试品,在人工雾室中通过试验研究了悬垂单串布置(I型)、悬垂双串布置(II型)和V型布置绝缘子串的直流负极性污闪特性,分析了布置方式对负极性污闪电压的影响。结果表明直流绝缘子串布置方式对污闪电压有影响;在不同污秽程度下,V型布置时直流污闪电压比I型布置时高14.5%~25.9%,II型布置则比I型布置低4.2%~9.0%;且随着污秽程度的增加,V型布置相对于I型布置的污闪电压提高的百分数和II型布置相对于I型布置降低的百分数均增大。

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