陈涵;刘会金;李大路;王建勋;

• 1:武汉大学电气工程学院

摘要(Abstract)：

间谐波源也是引起电压闪变效应的闪变源,由此产生的电压闪变效应已逐步占据主导地位,需要制定合理的间谐波限制标准来抑制闪变的发生。国际上广泛认可的IEC闪变仪是基于电压调幅波模型,其并不适用于计算和评估由间谐波造成的电压波动和闪变问题。分析了IEC闪变仪在计算间谐波闪变时引起误差的原因,并提出采用同步解调取代平方解调,从而扩展带通滤波器的频带范围。在具体应用中,还讨论了载波信号的获取以及Butterworth低通滤波器阶数的选取问题,并在Matlab/Simulink中建立了新的基于同步解调的闪变仪模型。仿真结果表明,该闪变仪能够准确计算间谐波引起的电压波动和闪变,从而能够根据计算结果制定正确的基于峰值波动的间谐波–闪变曲线。

关键词(KeyWords)： 间谐波;电压波动和闪变;IEC闪变仪;同步解调;峰值波动

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50677045)~~

作者(Author): 陈涵;刘会金;李大路;王建勋;

Email:

DOI: 10.13335/j.1000-3673.pst.2010.09.012

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