多谐波源谐波阻抗变化对谐波源责任分摊影响的研究  

Research on the influence of multi-harmonic sources impedance change on harmonic responsibility contribution

作　　者：王向东[1] 刘晓璇[2] 王慧[3] 孙伟[1] 刘胜军[1] 段志国[1] 郭亚成[1] 乔红军[1] 

机构地区：[1]国网河北省电力公司保定供电分公司,河北保定071051 [2]华北电力大学电气与电子工程学院,河北保定071003 [3]国网河北省电力公司邯郸县供电分公司,河北邯郸056000

出　　处：《河北工业科技》2016年第1期20-25,共6页Hebei Journal of Industrial Science and Technology

基　　金：河北省科技攻关项目(KJ2015014)

摘　　要：区分量化谐波责任,进行各用户与电网谐波责任分摊是近来研究谐波问题的热点和关注点。通过计算谐波阻抗来进行谐波电压责任分摊是分析此类问题的一般步骤,但当背景谐波电压变动以及非线性负荷电路发生变化时,谐波阻抗也非线性的发生波动和变化。为研究上述问题,本文将谐波源与系统通过系统谐波阻抗估计方法得到诺顿等效模型,推导了多谐波源责任分摊公式,分析多谐波源用户系统中某一用户谐波阻抗值变化(X/R恒定,X/R值变化)对公共点处谐波贡献量的影响,最后利用Matlab/Simulink搭建仿真电路,对相应结论进行验证总结。Currently the estimation of harmonic responsibility and determination of harmonic responsibility contribution of multi-harmonic sources and power system becomes a hot research topic. It is a general procedure to analyze harmonic responsi- bility contribution by calculating the harmonic impedance. But when the background harmonic voltage and the nonlinear load circuit change, the harmonic impedance will also change non-linearly. To study the above problems, the paper proposes the norton equivalent model for harmonic sources and the power system through calculating the harmonic impedance, deduces the multi-harmonic sources responsibility apportionment formula, analyzes the impact when one user＇s harmonic impedance changes on its harmonic contribution at the point of common coupling（PCC）, and uses Matlab to build the simulation circuit to verify the conclusion.

关 键 词：输配电工程 谐波责任 谐波阻抗 谐波贡献量 非线性负载 

分 类 号：TM727[电气工程—电力系统及自动化]