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电网技术  2012 

双回交流输电线路电场沿高度的非单调变化特性分析

, PP. 241-246

Keywords: 特高压,模拟电荷法,电场分布

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Abstract:

采用模拟电荷法,计算了三维特高压交流双回输电线路模型在6种相序布置下的空间电场强度分布。通过分析空间电场强度的分布特性发现,对于同塔双回输电线路,采用不同相序布置时,在线路档距中央垂直于地面的对称轴线上某一点的电场强度值基本不变;并且,采用不同相序布置时,沿高度方向空间电场变化的单调特性不同,即电场强度随高度增加或减小。由此提出了对于需要降低空间不同位置电场强度的问题,应选择不同相序布置的思想;并根据不同相序空间电场强度的分布特性,给出了选择最优相序的方法。文中计算结果对于线路交叉跨越等需要降低空间电场强度的问题具有参考意义。

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