NDLI: Predicting unstable modes in power systems: theory and computations

Content Provider	IEEE Xplore Digital Library
Author	Hsiao-Dong Chiang Jianzhong Tong Miu, K.N.
Copyright Year	1969
Abstract	Prediction of the (critical) unstable mode of a power system due to a fault cleared immediately after the critical clearing time is useful, for example, in transient stability analysis and in relay setting. However, the existing methods of predicting (critical) unstable modes were derived mostly on heuristics and simulations; these methods were derived for the classical power system model. In this paper, theoretical results for predicting unstable modes for general power system models are presented. It is shown that the unstable manifold of the controlling u.e.p. (instead of the coordinate of the controlling u.e.p.) determines the unstable mode. It is also shown that the unstable modes due to different fault-on trajectories with the same type-one controlling u.e.p. are the same. A computational scheme is developed to predict unstable modes for general power system models. To confirm the theoretical results developed in this paper, the scheme has been tested on a 50-generator, 145-bus system with promising results. Also, one application of the unstable mode predictions to transient stability analysis is illustrated.<>
Sponsorship	IEEE Power Engineering Society
Starting Page	1429
Ending Page	1437
Page Count	9
File Size	821912
File Format	PDF
ISSN	08858950
Volume Number	8
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power systems Power system analysis computing Power system transients Power system modeling Power system faults Power system stability Power system relaying Power system simulation Predictive models Transient analysis
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

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