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Detecting with PMUs the onset of voltage instability caused by a large disturbance
Glavic, Mevludin; Van Cutsem, Thierry
2008In Proc. IEEE PES General Meeting
Peer reviewed
 

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Keywords :
Long-term voltage stability; instability detection; phasor measurement units; sensitivity analysis; wide-area monitoring
Abstract :
[en] This paper deals with long-term voltage instability triggered by the outage of transmission or generation equipments. It is shown how the onset of voltage instability could be detected in real-time from post-disturbance bus voltages provided by Phasor Measurement Units (PMUs), assuming observability of the whole region prone to voltage instability. An extended set of equilibrium equations is fitted to the measurements and the change in sign of sensitivities is onitored. The latter are easily computed even for a large system. The important effects of overexcitation limiters and load tap changers are taken into account. The approach is illustrated on a 52-bus 20-machine system, where PMU outputs are simulated from detailed time simulation.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Glavic, Mevludin 
Van Cutsem, Thierry  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Language :
English
Title :
Detecting with PMUs the onset of voltage instability caused by a large disturbance
Publication date :
July 2008
Event name :
Power and Energy Society General Meeting
Event organizer :
IEEE
Event place :
Pittsburgh, United States
Event date :
du 20 juillet 2008 au 24 juillet 2008
By request :
Yes
Audience :
International
Main work title :
Proc. IEEE PES General Meeting
Peer reviewed :
Peer reviewed
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
Commentary :
(c)2008 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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