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电网技术  2009 

基波铁磁谐振理论分析及实验验证

, PP. 226-230

Keywords: 基波,铁磁谐振,理论分析,非线性,电力系统

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Abstract:

基波铁磁谐振频繁发生于电力系统中,严重威胁电力系统的安全稳定运行。首先利用理论分析方法研究了典型铁磁谐振电路的基波铁磁谐振,用非线性曲线描述了非线性电感的饱和特性,并考虑了回路电阻对谐振的影响;在仅考虑基波分量的情况下,根据理论推导结果得出系统各参数对铁磁谐振的影响,并给出了各参数导致系统发生谐振的临界值求解方法;最后利用实验验证了理论分析中电源电压对铁磁谐振影响的正确性。研究结果表明该方法能够很好地分析基波铁磁谐振及其影响因素,铁心损耗越小,电源电压越高,回路电阻越小,回路电容越小,系统发生谐振的可能性越大。

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