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电网技术  2010 

500/220kV混压同塔四回线路电磁环境的仿真分析

, PP. 207-211

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Abstract:

为评估500/220kV混压同塔四回输电线路电磁环境的影响,用CDEGS软件仿真计算了典型塔型线路对应的工频电场、工频磁场、无线电干扰及可听噪声值,并分析了导线排列方式、导线高度等因素对线路下方电磁环境的影响。计算结果表明,在规程要求的导线最低对地高度下,工频磁场、无线电干扰、可闻噪声值均满足国家环保标准要求,而工频电场是决定线路电磁环境是否达标的关键性因素。按照工频电场4kV/m的限值提出线路走廊宽度的建议值,并对比给出了2典型塔型线路对应的最优导线排列方式。最后,提出改善线路下方工频电场的措施。

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