基于正弦幅值积分器的有源滤波器谐波检测  

Harmonic detection of active power filter based on sinusoidal amplitude integrator

作　　者：王力 雷勇[2] 敖兵 Wang Li;Lei Yong;Ao Bing(Shaoxing Power Supply Company of State Grid Zhejiang Electric Power Company,Shaoxing 312000,Zhejiang,China;School of Electrical Engineering and Information Technology,Sichuan University,Chengdu 610065,China)

机构地区：[1]国网浙江省电力公司绍兴供电公司,浙江绍兴312000 [2]四川大学电气信息学院,成都610065

出　　处：《电测与仪表》2020年第10期94-99,共6页Electrical Measurement & Instrumentation

摘　　要：有源滤波器的谐波检测技术需要分离三相电流的基波分量。在电网非理想工况下,由于电流负序基波分量的影响,传统的谐波检测技术的性能受到一定的影响。文章通过在电网不对称工况下正弦幅值积分器的频域分析,提出一种在电网非理想工况下的谐波检测检测技术,该方法利用在αβ坐标下正弦幅值积分器(SAI)频率的选择作用,提取三相电流基波分量。文章详细介绍了基于正弦幅值积分器的谐波检测技术的工作原理、数学模型、频域分析,理论验证方案的可行性。搭建仿真模型,结果表明文章所提方法可以有效消除非理想工况对谐波检测的影响,准确快速检测到基波分量,给出补偿电流指令。The harmonic detection technology of active power filter( APF) needs to separate the fundamental component of three-phase current. Under the Non-ideal Conditions of power grid,due to the influence of negative sequence fundamental component of current,the performance of traditional harmonic detection technology is affected to some extent. In this paper,the frequency domain analysis of sinusoidal integrator under asymmetrical condition of power network is presented,a harmonic detection technology under non-ideal condition of power grid is proposed in this paper. This method is used in the αβ coordinate sinusoidal amplitude integrators( SAI) selection frequency to extract three-phase current fundamental component. In this paper,the working principle,mathematical model and frequency domain analysis of harmonic detection technology based on sinusoidal integrator are introduced in detail,and the feasibility of the proposed method is analyzed theoretically. The MATLAB/simulink models are built,and the simulation results show that the proposed method can effectively eliminate the influence of non-ideal working conditions on harmonic detection. The fundamental component is detected accurately and quickly and the compensating current instruction is given.

关 键 词：有源滤波器 谐波检测 非理想工况 正弦幅值积分器 静止坐标系 

分 类 号：TM933[电气工程—电力电子与电力传动]