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电网技术  2006 

复合绝缘子在±800kV特高压直流工程中的应用研究

, PP. 8-11

Keywords: 特高压直流输电,复合绝缘子,污秽,老化

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Abstract:

我国±800kV特高压直流输电工程面临着高海拔和重污秽等问题。复合绝缘子即使在憎水性完全丧失的条件下,其污闪电压仍然比同等污秽度下瓷和玻璃绝缘子串的污闪电压高出很多,因此在±800kV特高压直流输电工程中使用复合绝缘子是必要且可行的。在应用过程中应考虑并解决高海拔强紫外线辐射所带来的伞裙护套老化、大吨位复合绝缘子的长期可靠性以及高压端电场分布等技术问题。

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