摘要
HXD3C电力机车(涉及司机操纵台的操作采用虚拟仿真操作实现)有1个主断路器,安装在电力机车车内的高压电器柜内。在升弓状态下,按下扳键开关主断“合”后,经过一系列逻辑判断后,控制主断电磁阀得电,压缩空气进入主断路器使其主触点闭合。按下扳键开关主断“分”,控制电磁阀失电,主断路器断开。设有两组独立的辅助电源(UA11、UA12)。UA11为牵引通风机、冷却塔风机等供电,UA12为油泵、车体通风机、空气压缩机供电。当某一套辅助变流器发生故障时,故障转换电磁接触器闭合,另一套辅助变流器承担机车全部的辅助电动机负载。此时,该辅助变流器按定频定压方式工作。根据控制要求,依据列车牵引控制平台,实现主断路器手动合闸的控制电路设计、PLC程序设计及触摸屏的智能控制监控设计。
HXD3C electric locomotive(its operation on the driver's console is achieved by adopting virtual simulation operation)is equipped with one main circuit breaker,which is installed in the high-voltage electrical cabinet inside the electric locomotive.While the pantograph is in the ascending state,press the switch key to switch the main break"close".And after a series of logical judgments,the solenoid valve controlling the main break is connected to power and the compressed air will flow into the main circuit breaker to make its main contact closed.Press the switch key to switch the main break"off",the control solenoid valve loses power,and the main circuit breaker is disconnected.There are two independent auxiliary power supplies(UA11 and UA12).UA11 supplies power to traction fans,cooling tower fans,etc.UA12 supplies power to oil pumps,car body fans,and air compressors.When a certain set of auxiliary converter fails,the fault conversion electromagnetic contactor is closed,and the other set of auxiliary converter can bear all the auxiliary motor load of the locomotive.At this time,the auxiliary converter works according to the fixed frequency and fixed voltage mode.According to the control requirements and train traction control platform,the control circuit design,PLC program design and intelligent control and monitoring design of touch screen are realized.
作者
田国兰
慕锐典
Tian Guolan;Mu Ruidian(Sichuan Railway Vocational College,Chengdu,China;Chengdu Metro Co.,Ltd.,Chengdu,China)
出处
《科学技术创新》
2024年第17期65-69,共5页
Scientific and Technological Innovation
基金
以行业竞赛为驱动的PLC课程开发与建设,项目编号:202131007。
关键词
主断路器控制
PLC
触摸屏
智能控制
main circuit breaker control
PLC
touch screen
intelligent control
