曲娜;王建辉;刘金海;吴丰成;

• 1:沈阳航空航天大学安全工程学院
• 2:东北大学信息科学与工程学院

摘要(Abstract)：

在民用交流电系统中,发生串联电弧故障时,电流一般较小达不到断路器阈值,而且在某些情况下,正常工作状态电流与电弧故障电流波形非常相似,难以检测,易导致电气火灾的发生。利用Cassie模型对串联电弧故障进行模拟,分别得到线性负载和非线性负载条件下时域电流波形,并利用傅立叶变换得到电流幅值频谱。对比可知,电弧故障状态下线性负载电流波形和正常工作状态下非线性负载电流波形均会出现零休;电弧故障状态下无论是线性负载还是非线性负载电流幅值频谱均会出现谐波且与正常工作状态电流幅值频谱具有不同的特点。利用基于L_(3/4)范数正则化的稀疏表示算法实现电弧故障检测,通过仿真说明该方法具有较好的稀疏性和准确性。

关键词(KeyWords)： 电弧故障;Cassie模型;电流幅值频谱;稀疏表示;L3/4范数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(61473069);; 辽宁省教育厅科学研究项目(L201742)~~

作者(Author): 曲娜;王建辉;刘金海;吴丰成;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.3091

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