高压电器2017，Vol.53Issue(6)：191-196,6.DOI:10.13296/j.1001-1609.hva.2017.06.033
一种配电网单相接地故障判断新方法及其应用
Novel Detection Method and Its Application for Single Phase Grounding Fault in Distribution Network
摘要
Abstract
The single phase grounding fault detection is one of the key technologies in distribution feeder automation.A novel spectrum sudden change theory based method for single phase grounding fault detection is proposed,in which the spectrum sudden changes of transient component in zero-sequence current is extracted by Daubechies db4-db8 wavelet analysis,and the indefinite properties decision principle is used to analysis the sudden changes and detect the fault.A new type of smart column switch using this method is developed.The real physical system testing is introduced with curves and data analysis.A real field pilot implement is taken in the feeder lines of a substation in mountain area,which proves the accuracy and success of the proposed method.关键词
配电网故障定位/单相接地故障/频谱突变/物理非定项属性决策/小波Key words
distribution fault detection/single phase grounding fault/spectrum sudden change/decision by indefinite properties/wavelet引用本文复制引用
阙波,陈蕾,邵学俭..一种配电网单相接地故障判断新方法及其应用[J].高压电器,2017,53(6):191-196,6.
