The Control System of Boiler Main Steam Temperature Based on Heat Transfer Calculation

2019 4th Asia Conference on Power and Electrical Engineering

能源学;电工学

Wang, Songhan^1 ; Si, Ruicai^1 ; Jin, Chunlin^1 ; Liu, Xiwen^1 ; Zhang, Yuanbo^2 ; Jin, Yingai^2 ; Jiang, Zhipeng^2

Jilin Province Electric Power Science Research Institute Co., Ltd, Changchun

130021, China^1

College of Automotive Engineering, Jilin University, Changchun, Jilin

130022, China^2

关键词: Heat transfer calculations;    Heat transfer process;    Large hysteresis;    Main steam temperature control;    Main steam temperatures;    Multi-model switching control;    Target temperature;    Thermal power plants;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/486/1/012044/pdf
DOI  :  10.1088/1757-899X/486/1/012044

来源: IOP

【 摘 要 】

The cascade PID control system used in the main steam temperature control of traditional thermal power plants has large hysteresis and large inertia characteristics. In order to solve the above problems, the program of heat transfer process of main steam and boiler flue gas is built based on Matlab. The amount of desuperheated water obtained by the program ensures that the main steam temperature of the boiler is the target temperature. Then the heat transfer calculation program is imported into the multi-model switching control system simulation platform based on heat transfer calculation built by Simulink. The results of simulation show that the multi-model switching control system based on heat transfer calculation solves the problem of large inertia and large delay of the main steam temperature successfully, and the control system can adapt to changes in boiler load.