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首页> 外文期刊>Science, Measurement & Technology, IET >Lightning back flashover tripping patterns on a 275/132 kV quadruple circuit transmission line in Malaysia
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Lightning back flashover tripping patterns on a 275/132 kV quadruple circuit transmission line in Malaysia

机译：马来西亚275/132 kV四重电路传输线上的雷电反跳跳闸模式

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摘要

Severe lightning environment has been the major cause of overhead transmission line outages. In order to minimise the impact of lightning overvoltage, it is necessary to further evaluate lightning performance of any line before implementing specific protection methods. Therefore, in this work, a thorough study on back flashover tripping patterns of a 275/132 kV quadruple steel monopole towers in Malaysia is presented. Several design parameters such as lightning current magnitude, tower footing resistance and power frequency voltage were varied to investigate their influences on the line performance associated with lightning events. The results show that each parameter gives a significant effect on the flashover patterns. For each case, no flashover was recorded on the higher voltage circuits (275 kV), even though the line consists of tall structures, which might be more susceptible to lightning strikes at the upper part. Regardless of the effect of tower height, flashovers occur mainly on 132 kV circuits due to difference in the line insulation level. The results obtained were then used in designing appropriate protection scheme to further improve the transmission line lightning performance, mainly in terms of reducing the double circuit line outages.
机译：严重的雷电环境一直是造成架空传输线中断的主要原因。为了最小化雷电过电压的影响，有必要在实施特定的保护方法之前进一步评估任何线路的雷电性能。因此，在这项工作中，我们对马来西亚275/132 kV四重钢单极塔的反跳闸跳闸模式进行了深入研究。改变了几个设计参数，例如雷电电流大小，塔基电阻和工频电压，以研究它们对与雷电事件相关的线路性能的影响。结果表明，每个参数都会对闪络模式产生重大影响。在每种情况下，即使高压线路（275 kV）由高大的结构组成，也没有在高电压电路上记录到任何闪络现象，这可能更容易受到上部雷击的影响。不论塔高的影响如何，由于线路绝缘水平的差异，闪络主要发生在132 kV电路上。然后将获得的结果用于设计适当的保护方案，以进一步提高传输线的防雷性能，主要是在减少双回线中断方面。

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