A Dual-hot-redundant And Dual-net Structure Of BOP System And Fuzzy-immune Control Of Wated Water In Thermal Power Plant

At present,with the rapid development of domestic thermal power plants,the generator sets become units with large capacity and complex parameters,so as the structure of the power plant.Also,the requirements for the control of equipment are getting higher and higher.These problems have seriously hindered the development of thermal power plants.However,the emergence of the BOP(Banlence of Plant)System alleviated these problems.Taking the Water Treatment System of a thermal power plant with 3×600MW generator sets as the research background,this paper designs a dual-hot-redundant and dual-net structure of the BOP System based on cluster servers to monitor its performance after exploring the requirements of its craft technology and control process.This paper also designs a fuzzyimmune PID controller to optimize the control of the wasted water treatment process.The following is the main content of this paper:1.A dual-hot-redundant and dual-net structure based on cluster servers is designed and the structure is compared to other traditional structures.In response to the control requirements of the Water Treatment System,a redundant structure of the communication network is designed based on cluster servers with data acquisition,transmission,and storage functions.It is combined with the hot-redundant PLC to form a dual-hot-redundant and dual-net structure.Afterwards,a analytic hierarchy process was used to evaluate this network by comparing to traditional architectures,which proves the rationality and superiority of the structure.2.The fuzzy-immune PID controller for the control of p H value of waste water producing in water-treatment process and the bottom program of PLC for the equipment are designed.Also,the fuzzy-immune PID controller is designed in PLC using the offline table as references.After analyzing the control flow of water treatment,the bottom control program of the Water Treatment System is designed.After that,with the study of the dynamic process of p H neutralization of wasted water,a mathematical model of the wasted water neutralization system was established.The changing characteristics of system parameters are analyzed to obtain a fuzzy-immune PID controller.Simulation results prove the effectiveness of the fuzzy immune PID controller.Then,the fuzzy PID control program is written in PLC.3.A monitoring and testing platform for the BOP System is designed using In Touch software to show the result of the control of the entire network and the wasted water.The platform has many functions including remote monitoring and control,data display and recording,data report and abnormal alarm,which can monitor the running status of the entire Water Treatment System in real time.After this system put into use,all the equipment in workshop runs well.The rate of communication failure was also greatly reduced.Satisfactory monitoring and control result is achieved.