摘要
以华北电力大学顺序控制实验室中的火电厂化学水处理仿真模型为背景,采用西门子PLC实现了对化学水处理顺序控制系统的半物理仿真。首先介绍了化学水处理的仿真模型及其工艺流程,然后设计了其顺序控制系统的硬件组态、逻辑组态和人机接口,最后通过仿真模型模拟实际运行中由于各种原因引发的设备故障,重点阐述了对故障的分析和处理。最终实现了对仿真模型中阀门的监控及设备启停操作的顺序控制,成功模拟了设备在实际运行中可能出现的各种故障及其处理过程,从而达到了完全逼真地模拟实际火电厂化学水处理顺序控制系统的目的。本系统的成功实现有利于深化对化学水处理顺序控制系统的认识和理解,为将PLC应用于火电厂实际化学水处理顺序控制系统提供了有益的借鉴。
Based on the simulation models of chemical water treatment of a thermal power plant in the sequence control laboratory of North China Electric Power University,the semi-physical simulation of chemical water treatment sequence control system was implemented by the PLC of SIEMENS.At first,the simulation models and technological flow of chemical water treatment were introduced.Then the hardware configuration,the logic configuration and the human-machine interface of the sequence control system were designed.Finally,through simulating the faults of equipments caused by various reasons in the process of actual operation,the analyses and treatments of faults were represented.Thus the supervision and control of valves and the sequence control of equipments＇operation of starting and stopping in the simulation models were implemented.Various faults that may occur in the actual operation and the process of their treatments were simulated successfully.So the purpose of completely realistically simulating the chemical water treatment sequence control system of thermal power plants was achieved.The successful realization of the sequence control system is conductive to deepen recognition and understanding of the chemical water treatment sequence control system.It also provides certain useful references for the application of PLC in the chemical water treatment sequence control system in the thermal power plant.
出处
《化工自动化及仪表》
CAS
北大核心
2010年第1期79-84,共6页
Control and Instruments in Chemical Industry
基金
北京市教育委员会共建项目专项资助
关键词
化学水处理
PLC
顺序控制
半物理仿真
chemical water treatment
PLC
sequence control
semi-physical simulation
