An auxiliary LQG/LTR robust controller design for cogeneration plants

被引:13
|
作者
Park, YM [1 ]
Choi, MS [1 ]
Lee, JW [1 ]
Kim, BH [1 ]
Lee, KY [1 ]
机构
[1] PENN STATE UNIV,DEPT ELECT ENGN,UNIVERSITY PK,PA 16802
基金
美国国家科学基金会;
关键词
cogeneration plant control; LQG/LTR robust control; disturbance rejection; low frequency oscillation;
D O I
10.1109/60.507653
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
A robust controller is designed to reduce the sensitivity of the frequency and the extraction steam pressure to the disturbance imposed on a cogeneration plant by using the LQG/LTR methodology, Natural frequency of generator swing is analyzed to determine the frequency band of the disturbance due to the variation in load and utilized as a design specification for the LQG/LTR controller, The singular-value Bode diagram of the sensitivity transfer function matrix is shaped to reduce disturbance effects on the power system frequency and steam pressure according to the design specification, The high order LQG/LTR controller is reduced to a low order controller and implemented in a nonlinear cogeneration plant model, Simulation shows the performance of the LQG/LTR controller in disturbance rejection.
引用
收藏
页码:407 / 413
页数:7
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