NDLI: Evaluation of time delay effects to wide-area power system stabilizer design

Content Provider	IEEE Xplore Digital Library
Author	Hongxia Wu Tsakalis, K.S. Heydt, G.T.
Copyright Year	1969
Abstract	Centralized control using system-wide data has been suggested to enhance the dynamic performance of large interconnected power systems. Because of the distance involved in wide-area interconnections, communication delay cannot be ignored. Long time delay may be detrimental to system stability and may degrade system performance. The time delay tolerance of a centralized controller and the associated performance tradeoff is analyzed using a small gain criterion. Special attention is paid to the choice of weighting functions in a robust control design. As expected, it is found that time delay tolerance decreases when the system bandwidth increases, while the nominal system time-domain performance is concomitantly improved. Several approaches which can maintain a good system performance while increasing the time delay tolerance are suggested and compared. A modern controller design technique, like gain scheduling via linear matrix inequalities, is evaluated for the design of the supervisory power system stabilizer accounting for various time delays.
Sponsorship	IEEE Power Engineering Society
Starting Page	1935
Ending Page	1941
Page Count	7
File Size	447350
File Format	PDF
ISSN	08858950
Volume Number	19
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delay effects Power systems Power system interconnection Power system stability Power system dynamics Centralized control System performance Power system analysis computing Power system control Degradation wide-area Gain scheduling linear matrix inequality (LMI) power system stabilizer (PSS) robust control small gain theorem time delay
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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