电力有源滤波器三相谐波实时检测算法仿真  

Simulation of Real-Time Detection Algorithm for Three-Phase Harmonics of Active Power Filter

作　　者：梁承权 LIANG Cheng-quan(College of Mechanical and Electrical Engineering, Nanning University, guangxi, nanning, 530200, China)

机构地区：[1]南宁学院机电与质量技术工程学院

出　　处：《计算机仿真》2019年第8期92-95,107,共5页Computer Simulation

基　　金：2019年度广西高校中青年教师科研基础能力提升项目(2019KY0933);南宁学院2018年科研团队项目(2018KYTD05);南宁学院2019年度教授培育工程项目(2019JSGC08)

摘　　要：传统方法在对电力有源滤波器三相谐波进行检测时存在效率低、准确性不高的问题。为此提出基于人工神经网络的电力有源滤波器三相谐波实时检测算法。对电力有源滤波器进行分析,分为直流和交流两类。根据三相谐波电流的输入序列,将三相谐波的采样点进行后移,利用傅叶里计算公式计算其输出值,并对补偿后的补偿角进行计算,完成对三相谐波的补偿。根据电压幅值计算三相谐波补偿的参考电流,得到三相谐波的神经元权值,对权值进行优化,得出电力有源滤波器输出电流和三相谐波直流电容的电压大小,完成对电力有源滤波器三相谐波的实时检测。实验结果表明,所提方法在对电力有源滤波器三相谐波进行实时检测时,具有较高的检测效率和检测准确率。Traditional method leads to low efficiency and low accuracy in detecting three-phase harmonic of ac tive power filter. Therefore, a real-time detection algorithm for three-phase harmonic of active power filter based on artificial neural network was put forward. Firstly, we analyzed the active power filter including two categories : DC and AC. According to the input sequence of three-phase harmonic current, we moved the sampling point of three-phase harmonic backward, and then we used Fourier formula to calculate the output value. Meanwhile, we calculated the compensation angle after compensation, so as to complete the compensation of three-phase harmonic. According to the voltage amplitude, we calculated the reference current of three-phase harmonic compensation, so that the neuron weight of three-phase harmonic was obtained. Finally, we got the output current of active power filter and the voltage of three-phase harmonic DC capacitor by optimizing the weight. Thus, we completed the real-time de tection of three-phase harmonic of active power filter. Simulation results verify that the proposed method has higher detection efficiency and accuracy in detecting the three-phase harmonic of active power filter in real time.

关 键 词：电力 有源滤波器 三相谐波 实时检测 

分 类 号：TP273.22[自动化与计算机技术—检测技术与自动化装置]