解决漏电保护的死区问题  

Solving the Problem of Non-protective Area in Electric Leakage Protection

作　　者：田萍果[1] 刘文汉[1] 

机构地区：[1]西安工业大学电子信息工程学院,陕西西安710032

出　　处：《科技广场》2008年第5期224-225,共2页Science Mosaic

摘　　要：本文阐述了脉冲动作式漏电保护的优缺点,重点分析了它存在动作死区的原因,将漏电流分为缓变电流和突变电流加以检测,并采用合理方案--逐值检测法来解决动作死区问题,提高了漏电保护的安全性和可靠性。In this paper, the advantage and disadvantage of the pulse action leakage protection are introduced, mainly focusing on the theoretical analysis of the existence of non-protective area. And the leakage current is divided into gradually varied current and mutative current to measure the two. We adopt reasonable solution -- by detection method to solve the problem of non-protective area. So the security and reliability of electric ieakage protecting are enhanced.

关 键 词：漏电死区 逐值检测法 缓变电流 突变电流 

分 类 号：TM560[电气工程—电器]