Title :
Closed-loop identification for boiler-turbine coordinated control system of power unit
Author :
Wang Ya-gang ; Cai Shi-yuan ; Cai Wen-jian ; Zhang Xi ; Li Xiao-feng
Author_Institution :
Univ. of Shanghai for Sci. & Technol., Shanghai, China
Abstract :
This paper presents a new technique of closed-loop identification for boiler-turbine coordinated control system of power unit. On the basis of process input and output data in the control loops, the process frequency-response matrix is estimated with signal decomposition and frequency spectrum analysis, and then a transform function matrix is identified by least square method. The dynamic model is useful for adaptive coordinated control system to overcome the nonlinearity of boiler-turbine units. Simulation example is given to show both effectiveness and accuracy of the identification method for boiler-turbine units.
Keywords :
adaptive control; boilers; closed loop systems; control nonlinearities; frequency response; least squares approximations; matrix algebra; parameter estimation; power plants; spectral analysis; turbines; adaptive coordinated control system; boiler-turbine coordinated control system; boiler-turbine unit nonlinearity; closed loop identification; control loops; frequency spectrum analysis; least square method; output data; power unit; process frequency-response matrix estimation; process input; signal decomposition; transform function matrix; Control systems; Frequency estimation; Frequency response; Mathematical model; Process control; Tuning; Turbines; Closed-loop identification; boiler-turbine unit; coordinated control system; frequency response;
Conference_Titel :
Industrial Electronics and Applications (ICIEA), 2013 8th IEEE Conference on
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4673-6320-4
DOI :
10.1109/ICIEA.2013.6566474
