电气技术  2017, Vol. 18 Issue (8): 37-42    DOI:
研究与开发 |
基于小波变换的自适应电网谐波检测方法研究
许丹1, 黄晓明2, 李献伟1, 楼柏良2, 黄弘扬2
1. 许继集团有限公司,河南 许昌 461000;
2. 国网浙江省电力公司电力科学研究院,杭州 310014
The Study of Self-adapt Harmonic Detection in Power Grid based on the Wavelet Transformation
Xu Dan1, Huang Xiaoming2, Li Xianwei1, Lou Boliang2, Huang Hongyang2
1. XJ Group Corporation, Ltd, Xuchang, He’nan 461000;
2. State Grid Zhejiang Electric Power Company Electric Power Research Institute, Hangzhou 310014
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摘要 针对目前基波检测时存在的由于小波分解层数确定不当引起的频率混叠现象以及分析时运算量大造成的检测速度慢、实时性不高等问题,提出了一种基于基波和谐波频率确定分解层数的检测方法。该方法通过基波频率和最低次谐波频率确定最低频段边界,使基波与谐波有效隔离开,有效地减小了运算量,提高了基波特征信息的检测精度。
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许丹
黄晓明
李献伟
楼柏良
黄弘扬
关键词 电能质量 基波 谐波 频率混叠 小波变换    
Abstract:In view of the spectrum aliasing effect and the issues of slow detection and weak real-time performance caused by inappropriate wavelet level decision exist in the harmonic detection, a comprehensive harmonic detection method is proposed to fix the wavelet level based on the frequency of fundamental and harmonic wave. This method fixes the wavelet level by the fundamental frequency and the boundary of minimum frequency range, which separates the fundamental wave from signal accurately, resulting to the decrease of complicated computation and improvement of the detection precisionfundamental wave information.
Key wordspower quality    fundamental wave    harmonic wave    spectrum aliasing effect    wavelet transform   
     出版日期: 2017-08-18
作者简介: 许 丹(1990-),男,工程师,主要研究方向为配电网电能质量优化与治理。
引用本文:   
许丹, 黄晓明, 李献伟, 楼柏良, 黄弘扬. 基于小波变换的自适应电网谐波检测方法研究[J]. 电气技术, 2017, 18(8): 37-42. Xu Dan, Huang Xiaoming, Li Xianwei, Lou Boliang, Huang Hongyang. The Study of Self-adapt Harmonic Detection in Power Grid based on the Wavelet Transformation. Electrical Engineering, 2017, 18(8): 37-42.
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https://dqjs.cesmedia.cn/CN/Y2017/V18/I8/37