新型矿用组合开关综合保护控制器的设计

针对目前矿用组合开关存在抗干扰性差、维修困难等问题,提出了一种基于PLC的新型矿用双回路组合开关综合保护控制器的设计方案。该综合保护控制器以西门子S7-200 PLC为中央控制单元,通过硬件设计及软件编程,可实现短路、过载、断相、过欠压、漏电闭锁等保护功能。同时,人机界面采用威纶通MT6070iH全中文液晶触摸屏显示,简洁直观、易操作。试验表明,该控制器的各项保护控制功能均能快速准确执行,确保了整个装置工作的安全性、稳定性及抗干扰性。

Design of New Comprehensive Protection Controller for Mine Combined Switch

According to the present problems of bad performance of anti-interference and difficult maintenance exited in our mine combined switch,a design scheme of new comprehensive protection controller of dual-circuits mine combined switch based on PLC is proposed in this paper.This comprehensive protection controller uses the Germany Siemens s7-200 PLC as central control unit,though the hardware design and software programming can achieve protections of short circuit,overload,broken phase,over voltage,earth leakage interlock.Meanwhile,human-machine interface uses WeinviewMT6070iH all Chinese LCD touch screen to display,concise intuitively and easy operation.The result of the experiment shows that the controller of all kinds of protective functions can work accurately and quickly,ensures the whole equipment work safety,stability and anti-interference ability.