基于S变换的活体触电保护研究  

Research on Electric Shock Protection Based on S-Transform

作　　者：高军 吴晶莹 吴为麟[3] GAO Jun;WU Jingying;WU Weilin(Ningbo Lingkai Electronic Co.,Ltd.,Ningbo 315040,China;Zhejiang Power Exchange Center Co.,Ltd.,Hangzhou 310002,China;Department of Electrical Engineering,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]宁波瓴凯电子技术有限公司,浙江宁波315040 [2]浙江电力交易中心有限公司,浙江杭州310002 [3]浙江大学电气工程学院,浙江杭州310058

出　　处：《现代建筑电气》2022年第11期6-9,45,共5页Modern Architecture Electric

摘　　要：通过直接接触电击的方法,搭建试验电路,采集多组活体触电数据并进行分析。从S变换的时频特征和能量变化两个不同的角度,提取4个特征量来分析触电电流信号和非触电电流信号两者的区别。通过特征量阈值的合理选定,可以提高触电保护判断的可靠性,从而实现人身防护。Through the method of direct contact with electric shock,the expriment circuit was built,and multiple groups of live electric shock datas were collected and analyzed.From time-frequency characteristics of S-transform and energy change,four characteristics were extracted to analyze the difference between electric shock current and non-electric shock current.The reasonable selection of characteristics thresholds can improve the reliability of electric shock protection judgment,thus realizing personal protection.

关 键 词：触电保护 S变换 特征 剩余电流 

分 类 号：TM77[电气工程—电力系统及自动化]