摘要
为提高航空串联故障电弧判别的可靠性,提出了一种基于归一化处理的3阶累积量的方法,适用多类负载的航空交流故障电弧检测。通过提取线路中电流信号的相关特征参数,实现对串联故障电弧识别,并利用T检验和威布尔概率图分析并确定了阈值,实现了最终的判别。该航空串联故障电弧判别方法不受负载类型、电流大小的影响,可靠性高。计算结果表明,该方法能有效提取出故障电弧电流与正常运行时的特征差异,正确率较高,可满足实时性要求。
In order to improve the reliability of aviation series arc fault identification,a kind of three order cumulant normalization was put forward based on the application of the AC arc fault detection method in multi class load.By extracting the characteristic parameters of current signal,the series arc fault identification was achieved,the threshold was given using T test and Weibull probability figure,finally,the discrimination was realized.The fault identification was not affected by the type of load and the current size,and the reliability was high.The calculation results show that this method can effectively extract fault characteristics of arc current and normal operation difference with higher accuracy rate and can meet the real-time requirements.
作者
崔芮华
李思思
耿丽恺
CUI Ruihua;LI Sisi;GENG Likai(Electrical Apparatus Institute,Hebei University of Technology,Tianjin 300130,China;Tianjin Research Institute of Electric Science Co.,Ltd.,Tianjin 300399,China)
出处
《电气传动》
北大核心
2018年第8期88-92,共5页
Electric Drive
基金
河北省自然科学青年基金(E2015202143)
河北省教育厅青年基金(QN2014148)
作者简介
崔芮华(1962-),女,博士后,教授,Email:710667045@qq.com。
