阐述了污秽外绝缘设计的基本方法及存在的一些问题，并在此基础上推荐出了变电站绝缘子污秽外绝缘的设计方法。
The basic approach to design of polluted external insulation and some problems were summarized, and the design method for substation polluted insulation was proposed.
如何早期发现在役支柱绝缘子及瓷套中存在的危及安全运行的裂纹，一直是升压站和变电站检修的难题。
How to discover the dangerous slight crack in early stage in labor pillar insulator and porcelain cover, is a problem of the overhaul in step-up station and substation.
针对截波产生的原因，重点分析了雷击变电站终端杆塔使绝缘子闪络产生截波，并引起变压器截波过电压的机理。
The mechanism of chopped wave overvoltage of transformers caused by insulator arc-over chopped wave after lighting stroke terminal tower is analysis emphasize.
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