Article (Scientific journals)
Unified sensitivity analysis of unstable or low voltages caused by load increases or contingencies
Capitanescu, Florin; Van Cutsem, Thierry
2005In IEEE Transactions on Power Systems, 20 (1), p. 321-329
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Keywords :
bifurcation; eigenanalysis; quasi steady-state simulation; sensitivity analysis; voltage security analysis; voltage stability
Abstract :
[en] This paper deals with the analysis of situations where load increases and/or contingencies cause transmission voltages to become unstable or unacceptably low. Simple sensitivities are proposed to determine the relative efficiency of candidate remedial actions, which are parameter changes likely to strengthen the system. To this purpose, the sensitivities of the bus voltage magnitude experiencing the largest drop are considered. In the neighborhood of a loadability limit or a critical point, it is shown that these sensitivities and those based on eigenvalue and eigenvector computation are essentially the same. However, the proposed analysis can also deal with low but stable situations. The accuracy of the proposed sensitivities is demonstrated on the models of two real systems, in which the parameters of concern are bus power injections.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Capitanescu, Florin 
Van Cutsem, Thierry  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Language :
English
Title :
Unified sensitivity analysis of unstable or low voltages caused by load increases or contingencies
Publication date :
February 2005
Journal title :
IEEE Transactions on Power Systems
ISSN :
0885-8950
Publisher :
Ieee-Inst Electrical Electronics Engineers Inc, Piscataway, United States
Volume :
20
Issue :
1
Pages :
321-329
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Commentary :
(c)2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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