Variable structure control strategy to automatic generation control of interconnected reheat thermal system

Author

Das, D. ; Kothari, M.L. ; Kothari, D.P. ; Nanda, J.

Author_Institution

Indian Inst. of Technol., New Delhi, India

Volume

138

Issue

6

fYear

1991

fDate

11/1/1991 12:00:00 AM

Firstpage

579

Lastpage

585

Abstract

The paper deals with the analysis of automatic generation control (AGC) of a two-area reheat thermal system considering a variable structure controller (VSC) based on the sliding mode concept. A systematic method is suggested for obtaining switching hyperplanes. Optimum gain settings of the variable structure controller are obtained, both in the unconstrained (neglecting generation rate) and the constrained (considering generation rate constraint) modes, using the integral squared error (ISE) technique. Investigation reveals that there is a significant improvement in system dynamic performance with a VSC over that with an integral controller. Moreover, the variable structure controller is found to be quite insensitive to wide variations of system parameters

Keywords

power station control; power system interconnection; thermal power stations; variable structure systems; automatic generation control; dynamic performance; integral squared error; interconnected reheat thermal system; sliding mode; switching hyperplanes; thermal power station control; variable structure controller;

fLanguage

English

Journal_Title

Control Theory and Applications, IEE Proceedings D

Publisher

iet

ISSN

0143-7054

Type

jour

Filename

101351