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电网技术  2006 

多馈入直流系统中逆变站滤波器投切对谐波电流的影响

, PP. 48-52

Keywords: 多馈入直流系统,投切滤波器,谐波交互影响,混合仿真

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Abstract:

基于大型电力系统分析软件NETOMAC,提出了机电暂态和电磁暂态混合时域仿真法。该方法主要研究南方电网2008年多馈入直流系统各个逆变站由于滤波器投切产生的谐波电流的交互影响。对时域仿真得到的谐波电流进行傅里叶变换,仿真和分析结果表明某逆变站退出或投入任意类型的一组交流滤波器会使逆变站流入交流母线的对应谐波电流增大或减小,多个换流站的不同类型滤波器进行组合投切时,不同逆变站之间由于电气距离较近所产生的谐波交互影响可能造成投切效果和预期不同、甚至相反。

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