DocumentCode :
1157661
Title :
A Structure Preserving Model for Power System Stability Analysis
Author :
Bergen, A.R. ; Hill, D.J.
Author_Institution :
Department of Electrical Engineering and Computer Sciences and the Electronics Research Laboratory University of California
Issue :
1
fYear :
1981
Firstpage :
25
Lastpage :
35
Abstract :
A new model for the study of power system stability via Lyapunov functions is proposed. The key feature of the model is an assumption of frequency-dependent load power, rather than the usual impedance loads which are subsequently absorbed into a reduced network. The original network topology is explicitly represented. This approach has the important advantage of rigorously accounting for real power loads in the Lyapunov functions. This compares favorably with existing methods involving approximations to allow for the significant transfer conductances in reduced network models. The preservation of network topology can be exploited in stability analysis, with the concepts of critical and vulnerable cutsets playing central roles in dynamic and transient stability evaluation respectively. Of fundamental importance is the feature that the Lyapunov functions give a true representation of the spatial distribution of stored energy in the system
Keywords :
Frequency; Impedance; Lyapunov method; Network topology; Power system analysis computing; Power system modeling; Power system stability; Power system transients; Stability analysis; Transient analysis;
fLanguage :
English
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9510
Type :
jour
DOI :
10.1109/TPAS.1981.316883
Filename :
4110445
Link To Document :
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