Study on the CFBB Main Steam Pressure Control System Based on ADRC Technology

2013 ◽  
Vol 291-294 ◽  
pp. 2470-2473 ◽  
Author(s):  
Jia Liang Zheng ◽  
Li Xiang Zhang ◽  
Pei Hua Zhang
Keyword(s):  
Control System ◽  
Pid Control ◽  
Combustion Process ◽  
Pressure Control ◽  
Steam Pressure ◽  
Operating Conditions ◽  
Excellent Performance ◽  
Adjustment Time ◽  
Pressure Control System ◽  
Main Steam

The combustion process of CFBB is a system with time-varying, nonlinear, large inertia and time delay. Therefore the control effects of traditional PID control system in the CFBB plant are not satisfactory , especially the overshoot of the main steam pressure control system is very big, and the adjustment time is too long. To improve the performance of the main steam pressure control system, ADRC technology was used . The disturbed signal was added in the different operating conditions, the testing results indicated that the ADRC main steam pressure control system had more excellent performance than the convention PID method.

Boiler Steam Pressure Control System Based on Fuzzy Control

2012 ◽  
Vol 462 ◽  
pp. 732-737
Author(s):  
Yi Heng Zhou ◽  
Long Yue Yang ◽  
Hai Lin Pu ◽  
Zi Yu Zhao ◽  
Fei Liu ◽  
...  
Keyword(s):  
Control System ◽  
Pid Control ◽  
Good Control ◽  
Pressure Control ◽  
Steam Pressure ◽  
Cascade Control ◽  
Normal Operation ◽  
Control Effect ◽  
Pressure Control System ◽  
Fuzzy Adaptive

Industrial boiler steam pressure is an important measure of boiler normal operation. Since there is delay and inertial part, single-loop PID control is difficult to achieve good dynamic characteristics. By analyzing the characteristics of the steam pressure controlled object, this paper presents a fuzzy adaptive PID control based on the cascade control system. Finally, in order to analyze the effect of the control system, mathematical model was constructed by MATLAB simulation to compare fuzzy adaptive PID cascade control with conventional PID control. The results prove that the former has a good control effect.

Study on Fuzzy Immune PID Controller for Main Steam Pressure Control System in Marine Steam Power Plant

2014 ◽  
Vol 686 ◽  
pp. 89-94
Author(s):  
Peng Wang ◽  
Meng Hao ◽  
Qing Zhou Ji
Keyword(s):  
Control System ◽  
Power Plant ◽  
Pid Controller ◽  
Fuzzy Controller ◽  
Pressure Control ◽  
Steam Pressure ◽  
Steam Power ◽  
Steam Power Plant ◽  
Pressure Control System ◽  
Main Steam

The main steam pressure control system in marine steam power plant has the characteristics of time-varying, nonlinear and strong coupling. In order to get satisfactory control effect, we propose a fuzzy immune PID controller with which we can make comprehensive utilization of advantages of artificial immune, PID and fuzzy controller. We build up mathematical model of main steam pressure control system, carry out simulation and comparison. The results prove that fuzzy immune PID controller can significantly reduce the overshoot and settling time of main steam pressure. It is more effective in main steam pressure control system than PID controller.

Adaptive Fuzzy PID Applied in Steam Pressure Control System

2012 ◽  
Vol 485 ◽  
pp. 203-206
Author(s):  
Yun Jing Liu ◽  
Feng Wen Wang
Keyword(s):  
Control System ◽  
Control Strategy ◽  
Pid Control ◽  
Pressure Control ◽  
Steam Pressure ◽  
System Response ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Adaptive Fuzzy ◽  
Pressure Control System

Boiler steam pressure control system is important because of affecting the turbine speed directly. In engineering, the steam pressure control system is mostly dominated by traditional PID control. But the traditional PID control strategy can’t obtain satisfied control effects with the changing of the fuel and give-wind flow. The use of intelligent control strategy has been studied in recent years in order to improve steam pressure control. In this paper steam pressure control system with adaptive fuzzy PID control is presented, and the simulation results based on MATLAB show that the proposed algorithm can largely improve the system response performance compared to the traditional PID control.

Simulation on Improved Genetic Algorithm of the Ship's Superheated Steam Pressure

2014 ◽  
Vol 709 ◽  
pp. 335-338
Author(s):  
Peng Wang ◽  
Shuai Zeng ◽  
Ri Hui Dai ◽  
Hao Meng ◽  
Guo Lei Zhang
Keyword(s):  
Genetic Algorithm ◽  
Power Plant ◽  
Superheated Steam ◽  
Pressure Control ◽  
Steam Pressure ◽  
Improved Genetic Algorithm ◽  
Steam Power ◽  
Adjustment Time ◽  
Simulation Results ◽  
Main Steam

The traditional genetic algorithm was improved, and the marine steam power plant main steam pressure control was as an object, the improved genetic algorithm controller and the traditional genetic algorithm controller is studied by the simulation. The simulation results show that the improved genetic algorithm controller system can effectively reduce the overshoot and adjustment time of main steam pressure.

Research on Steam Discharge System Based on Pressure Control Mode

2014 ◽  
Vol 529 ◽  
pp. 569-573
Author(s):  
Yong Sheng Zhang ◽  
Ying Tang
Keyword(s):  
Control System ◽  
Steam Turbine ◽  
Pressure Control ◽  
Steam Pressure ◽  
Lumped Parameter Model ◽  
Control Mode ◽  
Discharge System ◽  
Lumped Parameter ◽  
Accident Condition ◽  
Main Steam

In order to keep the balance of the inside and outside energy of steam power system, the main steam pressure must be effectively controlled under maneuvering condition or accident condition. A set of lumped parameter model of steam discharge system was established, its control system was designed based on the pressure control mode and the simulation of steam turbine trip accident condition was calculated. Result shows that the steam discharge control system could make the steam discharge valve open in time under accident condition. Some steam could be discharged into condenser directly through steam conditioning device. So the main steam pressure could be always maintained within normal range which improves the safety of steam turbine unit and the adaptability to steam load.

The Application of New Predictive Functional Control in the Converter Gas Recovery System

2014 ◽  
Vol 685 ◽  
pp. 289-293
Author(s):  
Xiao Ming Liang ◽  
Hui Fang Wang
Keyword(s):  
Control System ◽  
Pid Control ◽  
Prediction Error ◽  
Process Model ◽  
Pressure Control ◽  
Differential Pressure ◽  
Fast Tracking ◽  
Predictive Functional Control ◽  
Pressure Control System ◽  
Functional Control

In view of the characteristics of the converter differential pressure control system are nonlinear, large delay, uncertainty and large disturbance, the traditional PID control is strict with process model, which can't satisfy the requirement of tracking set point and suppressing disturbance. Predictive functional control is not strict with process model, it has good robustness, but has problem of large amount of calculation. By introducing the output prediction error and the output increment prediction error in the performance index function, a new predictive functional control algorithm with the PID structure is proposed, which combines ability of dealing with delay and robust for predictive function control with ability of favorable anti-interference and fast tracking for PID control. The simulation shows that the control strategy is feasible, and can obviously improve the dynamic quality and anti-interference ability of the converter differential pressure control system.

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