PLC控制在内冷水水质监测系统中的应用  

The application of PLC control in monitoring system for the inside cooling water

作　　者：田兴旺[1] 张蓬鹤[2] 钱进[2] 乐文静[2] 

机构地区：[1]中国南方电网有限责任公司超高压输电公司天生桥局,贵州兴义562400 [2]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074

出　　处：《自动化与仪器仪表》2012年第4期114-114,117,共2页Automation & Instrumentation

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.

关 键 词：PLC 水质监测 OPC服务 WINCC 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]