| In most of the heating stations in China,there are a series of problems such as high water loss rate,large heat loss,and water seepage.With the increasing awareness of environmental protection of our country's citizens,how to save energy to the maximum extent has become a major concern.The introduction of new technologies and new equipment in the operation of heating pipe networks not only improves the automation level of heating stations,but also saves energy and meets the different needs of the market.Therefore,it is imperative to increase the heating capacity of the heating system and realize automatic control of the heating station.The topic is based on the research of the Caofeidian Thermal Power Company's Four Seas Thermal Station,and analyzes the automatic control system of the thermal station.According to the characteristics of the complex system with large hysteresis,time-varying and nonlinearity in the central heating system,based on the traditional PID control,the fuzzy algorithm is introduced to establish the mathematical model of the central heating system,and the STEP7 programming software and fuzzy logic tools are applied.The box is simulated and analyzed.The simulation curves of the conventional PID controller and the fuzzy PID controller are compared and analyzed.The results show that the temperature control effect of the fuzzy PID controller is superior to the traditional PID controller,which can be used in industrial control.It will achieve better control effect than the standard PID controller,stronger anti-interference ability,and has good robustness,and it requires a small amount of data,convenient hardware and software implementation,and is suitable for PLC control systems.The change automatically changes the speed and the number of worktables to adjust the water supply,saves a lot of manpower and material resources,and saves about 76,000 costs during the heating period.It is of great significance to realize the economic operation of the heating control system. |
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