基于非接触式电流互感器取电的故障指示器设计  

Design of the Fault Indicator Depending on the Non- Contact Current Transformer to Take Power

作　　者：冯小明[1] 吴国平[1] 周献飞[2] 王艳松[2] 金锋[2] 郑佳明[3] 

机构地区：[1]中国农业大学,北京100083 [2]北京市电力公司,北京100031 [3]辽宁省电力有限公司抚顺供电公司,辽宁抚顺113000

出　　处：《电测与仪表》2014年第12期98-102,共5页Electrical Measurement & Instrumentation

摘　　要：10kV配电网中电缆故障指示器无法采集电缆运行电流和故障电流,现场信号传输多用光纤等硬连接形式增加施工和维护工作量,且现场较少采集运行环境温度,电缆故障指示器无法正常运行。针对以上这种经常发生的情况,本文介绍了一种基于电流互感器取电,超级电容储电和具备遥测、遥信功能的故障指示器的设计方法。故障指示器从10kV电缆获取能量,以电池作备用电源,实时检测各相电流和温度指示故障。该设计方案现场施工维护量小、寿命长,对提高设备的便携性,降低设备成本和能耗,有一定的参考价值。The cable fault indicator in the lOkV cable distribution network cannot collect cable -running current and fault current. The use of hard - wired forms such as the optical fiber to transmit on - site signals increases construction and maintenance work. The running ambient temperature is seldom collected on the site. And the cable fault indicator cannot work normally. In view of the above situations, this paper introduces a method to design a remote fault indicator with the functions of telemetry and remote signaling the super capacitor to store power. The fault indicator , which depends on the current transformer to take power and obtains energy from the lOkV cable, and with batteries as the backup power, detects the phase current and temperature indication fault in real time. This design has some practical values in that it contains several advantages such as little on - site construction and maintenance work, long service life, and great potentials to improve the portability of the equipment and to reduce the cost and energy consumption.

关 键 词：故障指示 电流互感器 超级电容 遥测 遥信 

分 类 号：TM93[电气工程—电力电子与电力传动]