Research Of Power Plant Main Steam Temperature Control System Based On Fuzzy Neural Network Technology

Currently, most of the thermal power of the boiler main steam temperature commonly used in conventional PID cascade control system,with the modern thermal power generating units to large capacity,high parameter direction,using the traditional PID cascade control strategy can not satisfy the complex industrial processes control needs, the introduction of modern control theory of optimal control strategy, the need to establish the mathematical model of controlled object, and the actual mathematical model of controlled object is no clear boundaries,random group of load changes. This paper YUAN BAO SHAN Power Generation Co. Ld.Unit#3boiler main steam temperature Drum 600MW conventional PID cascade control strategy problems with fuzzy neural network intelligent control strategy of control is a hot spot, through the theory of fuzzy neural network control study proposes a fuzzy neural network control strategy for boiler main steam temperature control simulation,analysis and comparison of the main steam temperature cascade control using conventional PID and fuzzy neural network control strategy for cascade performance parameters indicators. The MATLAB software simulation tools, the main steam temperature control creation of fuzzy neural network simulation model, obtained by simulation with traditional compared to conventional PID cascade control, the boiler main steam temperature control strategy using fuzzy neural network control effects get more Good.The main contents as follows:1. Conventional PID Controller Parameters. Conventional PID control principle in the introduction, based on analysis of the proportional,integral,differential effects on control system performance is proposed PID controller combinations of the three parameters and the corresponding applications where, PID parameter self-tuning process.2. Fuzzy control strategy. Through the study of fuzzy control theory,put forward the Main steam temperature cascade Fuzzy-PID compound control system, the controller combines the traditional cascade PID control and Fuzzy control of the advantages posed by the Fuzzy-PID controller, MATLAB, described in detail Main Steam Temperature Fuzzy control simulation of the process.3. Fuzzy Neural Network control. Thermal power through the main steam temperature cascade control system architecture analysis, fuzzy control and the merits of neural networks, Fuzzy neural network is introduced thermal power Plant boiler main steam temperature control using fuzzy neural network respectively with conventional PID cascade simulation, analysis obtained,the boiler main Steam temperature control by using fuzzy neural network control is better.