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Design and Development of Chemical Water Treatment Control System in Thermal Power Plant

Author: MaYang
Tutor: JingYuanWei
School: Northeastern University
Course: Control Theory and Control Engineering
Keywords: Thermal power plant Chemical water treatment Programmable Logic Controller Fuzzy Control
CLC: TM621.8
Type: Master's thesis
Year: 2008
Downloads: 157
Quote: 0
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Abstract


The thesis is the set of chemical water for the thermal power plant control system . Water in thermal power production process responsible for energy transfer and cooling medium in the power generation process , the chemical water treatment occupies a very important position . They are safe , reliable , efficient operation , have a significant impact on safety performance and service life of the power plant boiler, turbine and other equipment . Therefore , the chemical water treatment systems for thermal power plants has been attached great importance to the experts and manufacturers . In this paper, the water system project in Tieling Power Plant chemical transformation , discusses the design of the automatic control system of power plant water chemistry and the design of computer monitoring system based on industrial control configuration software . The paper first analyzes the power plant chemical water treatment process control system requirements given control design . The four sub- systems of the whole control system design , including the pretreatment fire water system , water supply system , and in the pool system and condensate systems, each subsystem is a set of independent PLC control system . CX-Programmer programming software compiled individual subsystem control procedures . Industrial Ethernet technology , the various subsystems are connected together , constitute a water treatment LAN . Using the InTouch software tools , and the development of man-machine interface of the PC monitoring . The upper monitor screen monitor screen trend screen , alarm screen and auxiliary screen includes various subsystems , interface functions described . The complexity of the dosing process for thermal power plants , large delay and nonlinear difficult to describe precisely , the intelligent control strategy based on fuzzy control technique . Actual historical data collected by the site , the system simulation analysis . The results show that this new control strategy can be a good deal of the PH and process non-linearity and hysteresis .

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CLC: > Industrial Technology > Electrotechnical > Power generation, power plants > Power plant > Thermal power plants, thermal power stations > Power Plant Chemistry
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