实现三相四线制供电系统中性线断线保护智能装置的研究  

Research of Intelligent Protection Device Realizing the Negative Wire Broken Protection in Three-phase Four-wire Power Supplying System

作　　者：王勇[1] 李志勇[1] 王永忠 张发斌 周道娟 

机构地区：[1]重庆市电力公司,重庆400014 [2]沙坪坝供电局,重庆400030 [3]重庆樱花电气开关有限公司,重庆400061

出　　处：《低压电器》2011年第5期18-22,31,共6页Low Voltage Apparatus

摘　　要：阐述了三相四线制供电系统中性线断线后线路末端电压变化的数学模型;分析了中性线断线引起的严重危害。最后,根据交流电路的数学模型研发了一种智能保护装置作为中性线断线保护设备,并详细说明了智能保护装置的功能特点。A mathematical model of the change of line-end voltage was set up,serious damage in the three-phase four-wire power supply system was analyzed when the negative wire was broken circuit.According to the model of AC circuit,a kind of intelligent protection device as the protecting device was developed.In the end,the features of the device were illustrated.

关 键 词：三相四线制 中性线 断线 智能保护装置 供电系统 

分 类 号：TM464[电气工程—电器]