低压电力线通信导致漏电保护器误跳闸问题探讨  

Study on the error tripping problem of leakage protector for low voltage power line carrier communication

作　　者：王立城 胡科军 高飞 陈静 王东山 

机构地区：[1]北京智芯微电子科技有限公司,北京100192

出　　处：《电测与仪表》2017年第4期123-128,共6页Electrical Measurement & Instrumentation

摘　　要：针对国内部分用电信息采集用户出现的漏电保护器误跳闸现象,介绍了漏电保护器原理和跳闸现场情况,分析了低压电力线载波台区线路结构、信号传输和导致漏电保护器误跳闸的影响因素,并重点从载波通信影响量大小和漏电保护器抗扰性两方面进行了理论分析和实验验证,从而得出了漏电保护器误跳闸受其自身抗扰能力、载波信号特征、电缆及设备绝缘能力、电网噪声等因素影响,其中载波信号仅是导致抗扰能力较弱漏电保护器误跳闸的原因之一,而提高漏电保护器自身的抗扰能力和设计不足是解决漏电保护器误跳闸的较佳措施。Aiming at the error tripping problem of leakage protector in the domestic users of electric energy information acquisition system,this paper discusses the principle of leakage protector and testing conditions of tripping on site,and analyzes the line structure,signal transmission and error tripping of leakage protector in low voltage power line carrier communication residential areas. Then,the theoretic analysis and the experimental evaluation are both conducted from aspects of the impact of power line carrier communication and the anti-interference of leakage protector. The final result can be drawn that the tripping problem may be caused by the anti-interference itself,carrier signal characteristics,device insulation ability and power grid noises,etc. Thus,carrier signal is just one of main reasons leading to tripping problem,while better solution is to improve the design of leakage protector with enhanced anti-interference.

关 键 词：用电信息采集 电力线载波 漏电保护器 误跳闸 

分 类 号：TM933[电气工程—电力电子与电力传动]