基于PLC的变电所远程监控系统研究

Research on PLC in Surveillance and Measurement System of Transformer Station

本文以PLC为核心,详细阐述6kV变电所远程监控系统设计方案。系统上位机界面采用VB开发,通过微机的RS-232串行接口和S7-200PLC的RS-485串行接口,构成RS-485通信网络,可以实时显示及保存采集数据,实现对变电所的电压、电流、有功功率及功率因数等参数的实时监测、监控及保护。

The paper introduces PLC surveillance and measurement system of 6kV transformer station. The PC of system used the VB development. By means of the RS-232 serial port of microcomputer and the RS--485 serial port of S7-200PLC constitute RS-485 muhi-communic- ation network, the system can achieve the real time display and the preserve gathering data and realize the real time supervision and control of voltage, current, active power and power factor etc.