| 单节型结构对高压MOA耐不均匀重污秽性能的改善及应用 |
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| 引用本文： | 徐黎明,王睿.单节型结构对高压MOA耐不均匀重污秽性能的改善及应用[J].电网技术,1996,20(11):13-15. |
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| 作者姓名： | 徐黎明 王睿 |
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| 作者单位： | [1]西安交通大学 [2]西安电瓷研究所 |
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| 摘 要： | 本以葛洲坝５００ＫＶ日立ＭＯＳ近年来连续三次事故为例，分析了不均匀重污秽对多节避在分布的影响，它使避雷器局部荷电率过高，易导致避雷器的热崩溃，并据此提出了单节型避雷器的侉生及在我国重污秽地区代替多节型避顺的可行性。
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| 关 键 词： | 金属氧化物 避雷器 污秽 |
IMPROVING PERFORMANCE OF HIGH VOLTAGE MOA BY SINGLE-UNITSTRUCTURE IN UNEVEN HEAVY POLLUTION AREA |
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| Xu Liming,Wang Rui,Guo Jie.IMPROVING PERFORMANCE OF HIGH VOLTAGE MOA BY SINGLE-UNITSTRUCTURE IN UNEVEN HEAVY POLLUTION AREA[J].Power System Technology,1996,20(11):13-15. |
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| Authors: | Xu Liming Wang Rui Guo Jie |
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| Abstract: | Taking the three successive faults as example which took place in recent years in 500kV MOAs manufactured by Hitachi Co.and installed in Gezhouba Hydro Power Station,the influence of uneven heavy pollution on stress distribution of multi-unit arrestor is analyzed.Uneven heavy pollution causes the extreme uneven potential distribution on the surface of arrester and therefore leads to the thermal stress collapse of the arrester.Thus the author analyzed the feasibility of replacing multi-unit arrester by single-unit arrester in heavy pollution zone. |
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| Keywords: | MOA Pollution Multi-unit arrester Single-unit arrester |
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