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1000kV交流同塔双回线路工频相参数测量计算

DOI: 10.13334/j.0258-8013.pcsee.2014.33.019, PP. 5948-5955

Keywords: 1000kV交流,同塔双回线路,相参数,测量

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Abstract:

输电线路工频相参数是线路过电压计算的基本参数,获取1000kV交流同塔双回线路的相参数对于指导工程运行是必要的。短距离输电线路相参数测量可不考虑分布参数特性也能获得较准确的结果,对于长距离线路会产生一定的误差。为获取长距离特高压线路准确的相参数,利用π型和分布参数等值电路对多导线系统进行建模分析,提出了测量各相导线首末端电压、电流列出方程组求解相间互电容的方法。基于线路分布参数特性推导出相间互阻抗计算公式,采用求解长线方程的方法获得了相、自参数。仿真结果表明,该文方法可减小误差。通过实测计算获得了皖电东送淮南至上海1000kV交流同塔双回线路淮芜Ⅰ线与Ⅱ线的相参数,为工程中过电压计算等应用提供了准确的参数。

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