HVDC wall bushing performance in wet weather
HVDC wall bushing performance in wet weather
复制标题
高压直流穿墙套管在潮湿天气下的性能
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
P. Lambeth
中科院分区：
文献类型：
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作者：
P. Lambeth
有一个历史的闪络的墙壁套管在雨中，即使他们是相对干净的。由于阀厅的屏蔽作用，这些闪络似乎通常与不均匀的降雨分布有关。本文报道了一项研究已经取得了这个问题，涉及的实验室测试技术的发展，以模拟临界条件，也验证了快速闪络清洁雾试验可用于评估污染的直流套管。使用这些技术对传统衬套进行了评估，并找到了通过为其安装补充硅橡胶棚（助推器棚）来提高其性能的方法。已经测量了衬套上不同数量的这种梭口的影响，以及对助推器梭口进行修改的影响。
There is a history of flashovers of wall bushings in rain, even when they are relatively clean. These flashovers appear to be associated generally with a non- uniform rain distribution because of the shielding effect of the valve hall. This paper reports that a study has been made of this problem involving the development of laboratory test techniques to simulate the critical conditions, and also verification that the rapid flashover clean fog test can be used for evaluating a polluted DC bushing. Using these techniques a conventional bushing has been assessed and a method of improving its performance has been found by fitting it with supplementary silicone-rubber sheds, (booster sheds). The effects of various numbers of such sheds on the bushing have been measured, as have the effects of modifications to the booster shed.