有源电力滤波器指定次谐波补偿优化限流策略研究  

Research on current-limiting optimization strategy for specific harmonic compensation of active power filter

作　　者：张国澎[1] 周犹松 郑征[1] 王喜华 ZHANG Guopeng;ZHOU Yousong;ZHENG Zheng;WANG Xihua(School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454000,China;School of Mechanical Electrical&Information Engineering,China University of Mining&Technology,Beijing 100083,China)

机构地区：[1]河南理工大学电气工程与自动化学院,河南焦作454000 [2]中国矿业大学(北京)机电与信息工程学院,北京100083

出　　处：《电力系统保护与控制》2018年第16期46-53,共8页Power System Protection and Control

基　　金：国家自然科学基金项目资助(U1504518);河南省教育厅高等学校重点科研项目资助(15A470015);河南理工大学控制工程省重点学科开放实验室项目资助(KG2016-04);河南省高等学校重点科研项目资助(17A470001)~~

摘　　要：为保障有源电力滤波器(Active Power Filter,APF)在超过其额定容量的工况下稳定运行,提出了一种基于负载谐波电流重构的限流策略,实现有源滤波器输出指定次谐波电流的精确限流。根据补偿后电网电流总谐波畸变率(THD)最小原则构建补偿结果的评价体系,通过对电流重构波形中各次谐波含量的调整,提出了一种有源滤波器的最优补偿方案。最后利用半实物平台进行了相关实验,对比分析了负载电流在稳态和动态下,谐波电流重构与传统方法的限流与补偿效果,验证了所提重构补偿方案的正确性与优越性。In order to ensure the APF to operate stably under the condition that the compensating current exceeds its rated capacity,a novel current-limiting strategy based on load harmonic current reconstruction is proposed for realizing the accurate limitation of selective current outputted by active power filter.Based on the evaluation criteria of using the minimum Total Harmonic Distortion(THD)of the compensated grid current to construct compensation result,an optimal compensation scheme for active power filter is proposed by adjusting harmonic contents in the current reconstruction waveform.Finally,corresponding experiments are carried out by employing a semi-physical experiment platform,in which current limiting and compensation effect between traditional current limiting strategy and harmonic current reconstruction strategy are compared and analyzed in load current steady state and dynamic state.Experimental results validate the feasibility and superiority of the proposed strategy.

关 键 词：有源电力滤波器 电流重构 指定次谐波 限流 优化补偿 

分 类 号：TM761.12[电气工程—电力系统及自动化] TN713.8[电子电信—电路与系统]