NDLI: Identification of voltage collapse margins in power systems

Content Provider	IEEE Xplore Digital Library
Author	Zambroni de Souza, A.C. Quintana, V.H.
Copyright Year	1994
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Waterloo Univ., Ont., Canada (Zambroni de Souza, A.C.; Quintana, V.H.)
Abstract	Voltage collapse has been associated with a stress condition of power systems. Control actions must provide the desired results, otherwise a system may operate in an unknown condition. It has been shown that this unknown condition is associated with two regions of operation and the boundary between them. The boundary between the two regions is associated with a singular load-flow Jacobian. In order to identify the critical bus, a reduction of the load-flow Jacobian in relation to each load bus is derived. To reduce computational burden associated with large power networks, a network partitioning is proposed based on voltage variation at each load bus in relation to load variation at the other load buses. For calculating the margins, for all load buses of the weak area of the power system identified from network partitioning, the relation between load variation at each load bus and voltage magnitude and angle phase variations at the critical bus are normalized, one by one. The buses strongly connected to the critical bus have smaller load variation in relation to the buses weakly connected to the critical bus. The proposal method has been tested using an IEEE 24-bus system.<>
Starting Page	933
Ending Page	937
File Size	435465
Page Count	5
File Format	PDF
ISBN	0780324161
DOI	10.1109/CCECE.1993.332447
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-09-14
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage Power systems Reactive power Jacobian matrices Load management Power generation Control systems Computer networks Power system stability Bifurcation
Content Type	Text
Resource Type	Article

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