Title :
Improving boiler performance during partial load rejections using a mixed fuzzy logic and LQG/LTR approach
Author :
Ben-Abdennour, Adel ; Lee, Kwang Y.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
Abstract :
Partial or full load rejections occur due to loss of one or more transmission lines or similar faults. Withstanding power station load rejections depends almost exclusively on the boiler control. This paper presents a fuzzy supervisory scheme to improve the performance of the boiler drum water level during such disturbances. This scheme consists of a robust local controller designed using the linear quadratic Gaussian with loop transfer recovery (LQG/LTR). The level set-point to the controller is modified whenever necessary by a fuzzy logic based supervisor
Keywords :
boilers; control system analysis; control system synthesis; fuzzy control; level control; linear quadratic Gaussian control; power station control; robust control; steam power stations; boiler control; boiler drum water level; boiler performance; control simulation; disturbances; fuzzy supervisory scheme; level set-point; linear quadratic Gaussian; loop transfer recovery; partial load rejections; robust local controller design; steam power plants; Boilers; Fuzzy logic; Knowledge representation; Power generation; Power transmission lines; Propagation losses; Robust control; Robustness; Turbines; Valves;
Conference_Titel :
Intelligent Systems Applications to Power Systems, 1996. Proceedings, ISAP '96., International Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-3115-X
DOI :
10.1109/ISAP.1996.501089
