摘要
直流输电中内冷水循环系统的水质问题涉及到换流站的安全稳定、运行,是电力系统必须定期监测的项目。本文介绍了应用PLC控制一套换流站内冷水在线监测系统,利用OPC服务实现西门子S7-200型号的PLC与上位机之间的通讯,实时在线对内冷水水质状况进行监测,对水质变异提前进行预警。
The Water Quality of Inside Cooling Water circulator system in DC transmission relates to the security and stability work of Converter station, it must be monitored in power system periodicity.This paper introduces how to control online monitoring system for the inside cooling water by using PLC. According to OPC service, it realizes the communication of Siemens S7-200 PLC and upper computer, real-time monitors the water quality of inside cooling water online, alarms the aberrance of water quality ahead.
出处
《自动化与仪器仪表》
2012年第4期114-114,117,共2页
Automation & Instrumentation
