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电力系统中线路电感与电容之间的谐振使得电力系统背景谐波电压谐振放大,导致电力系统中的谐波电压严重畸变。利用馈电线理论建立电力系统馈电线的分布式参数模型,对由系统背景谐波电压引起的谐波电压谐振传播情况进行理论分析,提出新的基于分频控制的阻性有源滤波器的位置选择方案,以抑制电力系统中背景谐波电压的谐振传播。通过仿真分析及实验验证理论分析的正确性,以及所提分频控制的有源滤波器的位置选择策略对电力系统背景谐波电压抑制的有效性。
The resonance between the line inductance and the capacitor in the power system causes the background harmonic voltage of the power system to be resonantly amplified, resulting in serious distortion of the harmonic voltage in the power system. Based on the theory of feeder, a distributed parameter model of power system feeder is established to analyze the harmonic voltage resonance propagation caused by system background harmonic voltage. A new resistive active filter based on frequency division control is proposed Options are chosen to suppress the resonant propagation of background harmonic voltages in the power system. The validity of theoretical analysis by simulation analysis and experimental verification as well as the effectiveness of the location selection strategy of the active filter with frequency division control on suppression of background harmonic voltage in power system are analyzed.