谐波对负序滤过器工作状态影响分析

Analysis Performance of Negative Sequence Current Filter Affect by Harmonic Component

本文严格分析了常用的负序电流滤过器在谐波电流作用下的行为,提出了“定值折算系数”和“谐波等效负序电流”的概念,从而能方便地定量分析几种负序电流滤过器在谐波电流作用下的工作状态,得出了有普遍意义的结论。本文提出的“寄生谐波”的概念,有助于了解三相非线性负载产生的谐波电流的性质。

The performance of negative sequence current filter affected by harmonic component is analysed.The concepts of″setvalue conversion fatter″and″Harmonic equivalent negative current″are introduced in this paper,which make the quantitative analysis effective and easy,and some significant results are obtained.The concept of″Parasitic harmonic″proposed in this paper is helpful to charily the nature of harmonic current due to nonlinear three phase load.