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电网技术  2013 

基于改进变权物元可拓模型的电能质量综合评价

, PP. 653-659

Keywords: 电能质量综合评价,改进物元可拓模型,变权理论,敏感性分析

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Abstract:

为研究山西500kV长久三回线路电流不平衡的原因,优化改造方案,使用PSCAD电磁暂态程序输电线路结构模型进行了不同导线排列方式的仿真研究,推荐了最优改造方案,实施改造后效果良好。通过仿真研究及改造过程发现,对于不换位同塔双回线路,在36种排列方式中6种逆相序排列方式电流不平衡度最小,且6种逆相序排列方式电流不平衡度基本相同,但对于2回不换位同塔双回线和一回不完全换位单回线路并列运行的情况,由于受单回线路的影响,6种逆相序改造方案差异较大,有最优方案可选。

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