基于嵌入式Modem的漏电监测系统  

Leakage Current Detecting System Based on Embedded Modem

作　　者：李兴建[1] 蒋长洪[1] 李昆[1] 

机构地区：[1]西安交通大学电气工程学院,陕西西安710049

出　　处：《广西电力》2003年第1期18-20,31,共4页Guangxi Electric Power

摘　　要：介绍了一种基于嵌入式Modem的漏电监测系统 ,该系统包括漏电监测单元和远端计算机管理控制中心两部分。漏电监测单元可以方便地设置线路漏电流限值、监测线路的电流、控制线路等 ,从而完成对电网线路的监测和保护。远端计算机管理控制中心通过Modem与前端的漏电监测单元组成信息网络系统 ,基于电话网环境实现下位终端和管理控制中心的数据通信 ,实现对农村线路漏电情况的远程监测。系统预留RS - 4 85通信接口 ,作为跟变电站自动化系统的接口 ,可以通过跳线开关选择使用 4 85接口传送数据 ,报文格式采用变电站自动化系统中常用的 10 1规约 ,因此可以纳入到变电站自动化系统中 。A leakage current detecting system based on embedded modem is introduced. This system includes the leakage current-detecting unit, the remote computer control and administer center. The leakage current-detecting unit is convenient to set limited value of leakage current and monitor the current of power line. Thus the transmission line is monitored and protected. The remote control center and the leakage current-detecting unit are linked by Modem as an information network. Applying data communication between terminals and control center, remote monitor of leakage current for rural power network is realized. The communication interface RS-485 is reserved to link with substation automation system. The data can be transmitted from the interface 485 selected by jumper. Also, the 101 protocol as a usual format in substation automation system is used, so this system can be taken as a part of substation automation system to monitor and control uniformly.

关 键 词：嵌入式MODEM 漏电监测 数据远传 RS-485 

分 类 号：TM769[电气工程—电力系统及自动化]