摘要
提出利用快速傅里叶变换算法检测交流电器的电弧特征,用于电弧保护装置。通过试验获得多个电器负载在正常情况和发生电弧故障时的电流数据,用快速傅立叶变换进行频谱分析,从分析结果中提炼出3个特征值作为是否发生电弧的判据。所提方法具有减少检测时间,提高检测精度的优点。
An algorithm is proposed to detect the arc characteristics of AC electrical apparatus by using FFT, which can be used in are protection device. Firstly, the current data of the load in normal condition and arc fault condition are obtained by experiment, and the three characteristic values, as criterions of the arc, are extracted from the analysis results by FFT. The method has the advantages of reducing the detection time and improving the detection accuracy.
出处
《电器与能效管理技术》
2015年第21期8-12,共5页
Electrical & Energy Management Technology
关键词
快速傅立叶变换
交流电弧检测
特征值
频谱分析
fast fourier transform（FFT）
AC arc detection
characteristic value
spectrum analysis
