基于小波分析的舰船中压电网间歇性接地故障选线研究  

Research on intermittent ground fault line selection of ship medium voltage grid based on wavelet analysis

作　　者：宋亚伟 陈传生 晏凯[1] 叶泽浩 Song Yawei;Chen Chuansheng;Yan Kai;Ye Zehao(Air Force Early Warning Academy,Wuhan 430019,Hubei,China)

机构地区：[1]空军预警学院,武汉430019

出　　处：《船电技术》2022年第9期1-3,9,共4页Marine Electric & Electronic Engineering

摘　　要：为了对中压条件下舰船电网愈发频发的间歇性接地故障进行故障定位,本文提出了一种基于小波分析的间歇性接地故障选线方法。该方法针对舰船中压电网暂态故障电流特性,利用小波分析工具对暂态电流进行特征提取获得各支路电流的模极大值,然后按照双门限检测策略对故障支路进行故障定位,最后在Matlab/Simulink平台上对该方法进行了仿真验证,仿真结果证明了该方法的可行性和正确性。In order to locate the intermittent ground faults that occur more and more frequently in the ship medium voltage power grid,this paper proposes an intermittent ground fault line selection method based on wavelet analysis.According to the transient fault current characteristics of the ship's medium voltage grid,the method uses wavelet analysis tools to extract the characteristics of the transient current to obtain the modulo maximum value of the current of each branch,and then locates the fault of the faulty branch according to the double threshold detection strategy.Finally,the method is simulated and verified on the Matlab/Simulink platform,and the simulation results prove the feasibility and correctness of the method.

关 键 词：舰船中压电网 小波分析 间歇性接地故障 

分 类 号：TM74[电气工程—电力系统及自动化]