摘要
并联型有源电力滤波器(shunt active power filter,SAPF)应用于电容性非线性负载时,会造成负载侧谐波放大。本文首先介绍了 SAPF 应用的系统结构,接着建立了基于电压型非线性负载的 SAPF 谐波补偿数学模型,分析了造成非线性负载侧谐波放大的机理,并推导了相应公式;同时针对负载侧谐波放大效应,提出了通过改变阻抗比、降低补偿因子、并联补偿电容 3 种措施。最后,通过仿真软件进行了仿真研究,并给出了工程中已采用的措施。仿真结果及工程案例验证了提出措施的有效性。
Shunt active power filter (SAPF) will cause harmonic amplification at the load side when it is used at capacitive nonlinear load. Firstly,the system structure of SAPF application is introduced,then,SAPF harmonic compensation mathematical model based on voltage non-linear load is set up,the mechanism causing the harmonic amplification at the non-linear load side is analyzed and corresponding formula is derived and,at the same time,as for the issue of harmonic amplification effect at the load side,such three measures on changing impedance ratio,reducing compensation factor and shunting compensation capacitance are proposed. Finally,the simulation study is performed by the simulation software and the measures adopted in the projects are given. The effectiveness of the proposed measures is verified by the simulation result and project example.
作者
彭程
李文才
陈欢欢
高波
宫翔
路文梅
马丽
PENG Cheng;LI Wencai;CHEN Huanhuan;GAO Bo;GONG Xiang;LU Wenmei;MA Li(School of Electric Engineering,Hebei University of Water Resources and Electric Engineering, Hebei Cangzhou 061000, China)
出处
《电力电容器与无功补偿》
北大核心
2019年第3期53-58,共6页
Power Capacitor & Reactive Power Compensation
基金
河北省高等学校科学研究计划青年基金项目(QN2017345
QN2018220)
关键词
有源电力滤波器(APF)
非线性负载
谐波放大
阻抗比
补偿因子
并联补偿电容
active power filter(APF)
nonlinear load
harmonic amplification
impedance ratio
compensation factor
shunt compensating capacitor
