电力系统保护与控制2012，Vol.40Issue(5)：27-31,5.
基于相空间重构的变压器励磁涌流识别
Transformer excitation inrush current recognition based on the phase space reconstruction
摘要
Abstract
For the problem that transformer excitation inrush current can cause differential protection maloperation, based on the phase space reconstruction theory, phase spaces of transformer excitation inrush current and different internal fault current series are reconstructed from one-dimensional time series to high-dimensional phase space. Through the research of high dimensional phase space attractor's distribution and movement characteristics, dynamic characteristics are obtained form the original time series. And the characteristic of attractor, namely the correlation dimension is calculated to differentiate transformer excitation inrush current from internal fault current. Experimental analysis results indicate that the value of correlation dimension corresponding with current series of excitation inrush current is greater than 2, but the value of correlation dimension corresponding with current series of internal fault is between 1 and 2. Therefore, they are obviously different. So correlation dimension can serve as a kind of new features criterion to identify transformer excitation inrush current关键词
励磁涌流/内部故障/相空间重构/关联维数Key words
excitation inrush current/ internal fault/ phase space reconstruction/ correlation dimension分类
信息技术与安全科学引用本文复制引用
宋晓,李平,徐公林..基于相空间重构的变压器励磁涌流识别[J].电力系统保护与控制,2012,40(5):27-31,5.
