基于物联网的110 kV电缆管井智能监测系统建设与应用

摘要:

电力电缆在城市供电系统中起关键作用,电缆管井用于电缆接头制作或检修施工使用。日常运行过程中,电缆管井可能会出现电力电缆本体或中间接头过热,环境温度过高、水位过高等异常状态,大量非正常烟雾及非法入侵等现象也威胁着电缆供电系统的可靠性。介绍了一套用于对110 k V电缆管井智能监测的系统,包括智能感知系统、监控主机系统及在线监测终端系统。首先,介绍了由多智能传感器组成的感知系统,通过Lo Ra技术同井上监控主机无线通信,数据推算及实际测试结果表明本套系统依靠电池能够满足长时间续航要求;然后,介绍了多功能后台远程监测终端系统,后台系统基于物联网NB-lo T技术无线连接远端监控主机。本套系统在深管井中得到应用,能实时感知系统运行健康状况,极大便利运行维护人员,对确保电力电缆安全运行,提高供电可靠性具有重要意义。

Abstract:

The power cable plays a key role in urban power supply system,and the cable bank well provides a channel for the cable placement. In the daily operation process,the power cable body or intermediate joint will overheat,and there will be overhigh temperature of cable bank well environment and overhigh water level,and a large number of abnormal smoke and illegal invasion and other phenomena also threaten the stability of cable power supply system. A set of intelligent monitoring system for 110 k V cable bank well is introduced,including intelligent sensing system,monitoring host system and online monitoring terminal system. Firstly,the sensing system composed of multi intelligent sensors is introduced. Through the wireless communication between Lo Ra technology and the monitoring host in the well,it is determined by data calculation and experimental test that the system can meet the long-term endurance requirements by relying on batteries. Then,the multi-functional background remote monitoring terminal system is introduced. The background system is based on NB-lo T technology of the Internet of things to connect the remote monitoring host wirelessly. The system is applied to the drainage well system,which can sense the health status of the system in real time,and greatly facilitate the operation and maintenance personnel to find faults in time and deal with them in time. It is of great significance to ensure the safe operation of power cables and improve the reliability of power supply.