基于小波变换的主谐波源定位  

Location of Harmonic Source Based on Wavelet Transform

作　　者：王宇 邢砾云[1] 金基良 WANG Yu;XING Liyun;JIN Jiliang(School of Electrical and Information Engineering,Beihua University,Jilin 132021,China)

机构地区：[1]北华大学电气与信息工程学院,吉林吉林132021

出　　处：《北华大学学报（自然科学版）》2021年第1期135-140,共6页Journal of Beihua University（Natural Science）

基　　金：吉林省教育厅科学技术研究项目(JJKH20190642KJ,JJKH20200040KJ);北华大学研究生创新计划项目(2019049).

摘　　要：准确定位主谐波源位置是采取合理措施抑制谐波污染的重要前提.由非正弦条件下的功率分解出发,基于IEEE Std.1459-2010功率标准定义的谐波视在功率,提出一种基于二进制小波变换与谐波视在功率相结合的主谐波源定位新方法.通过比较畸变总量归一化大小以及最低级别细节有功功率正负,准确定位谐波源位置;利用MATLAB/Simulink仿真软件验证了该方法在多谐波源存在情况下的有效性与正确性.Accurately locating the main harmonic source is an important prerequisite for taking reasonable measures to suppress harmonic pollution.Starting from the decomposition of power under non-sinusoidal conditions,based on the apparent power of the harmonics defined in the IEEE Std.1459-2010,a new method of main harmonic source location is proposed on the basis of combination of the binary wavelet transform and the apparent power of the harmonics.By comparing the normalized magnitude of the total distortion and the sign of the lowest level of detail active power,the harmonic source can be accurately located.It proves that this method is feasible and correctness on the condition of multi-harmonic sources by using MATLAB/Simulink.

关 键 词：谐波源定位 畸变总量 小波变换模极大值 功率流向 奇异性 

分 类 号：TM711[电气工程—电力系统及自动化]