Title :
Utilization of a linearized model for the redesign of the feedwater control system of a drum boiler power plant
Author :
Holzenthal, Leo L., Jr. ; Masada, Glenn Y.
Author_Institution :
MS Benbow & Associates, Metairie, LA, USA
Abstract :
Linearized models of the low-pressure feedwater system of a 235-MW drum boiler power plant are developed. The linearized models are to be used as analytical tools for the plant control engineer and also for their intrinsic value as plant system models. In this application of the models, the hotwell and deaerator level controllers of the low-pressure feedwater system are redesigned for best tank level responses because controller tuning was shown to yield only limited improvement. The control strategy decouples the hotwell and deaerator level control systems. It is shown that the deaerator level control is significantly improved with no loss in the accuracy of the hotwell system
Keywords :
boilers; level control; thermal power stations; 235 MW; deaerator level controllers; decoupling; drum boiler power plant; feedwater control system redesign; hotwell; linearized model; Boilers; Control system synthesis; Control systems; Level control; Mathematical model; Nonlinear dynamical systems; Power generation; Power system modeling; Pressure control; Testing;
Conference_Titel :
Southeastcon '90. Proceedings., IEEE
Conference_Location :
New Orleans, LA
DOI :
10.1109/SECON.1990.117953
