Reference : A load shedding scheme against both short- and long-term voltage instabilities in the pr...

	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Electrical & electronics engineering
	To cite this reference:	http://hdl.handle.net/2268/90438

Title :	A load shedding scheme against both short- and long-term voltage instabilities in the presence of induction motors
Language :	English
Author, co-author :	Otomega, Bogdan [ > > ]
	Van Cutsem, Thierry [Université de Liège - ULg > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation >]
Publication date :	Jun-2011
Main document title :	Proceedings of the IEEE Trondheim Power Tech 2011 conference
On invitation :	No
Audience :	International
Event name :	IEEE Trondheim Power Tech 2011
Event date :	du 19 au 23 juin 2011
Event organizer :	IEEE PES
Event place (city) :	Trondheim
Event country :	Norvège
Keywords :	[en] Long-term voltage instability ; short-term voltage instability ; emergency control ; undervoltage load shedding ; induction motors ; distributed control
Abstract :	[en] In the presence of induction motors in loads, long-term voltage instability may result in sharp voltage decreases, once the generators supporting transmission voltages have their field currents limited. Furthermore, after a fault, induction motors may fail re-accelerating and their stalling leads to short-term voltage instability. This paper investigates the ability of the load shedding scheme, previously proposed by the authors, to deal with both short and long-term voltage instabilities. The scheme is distributed with minimal amount of information exchange. It is also shown that the selectivity of this protection scheme can be increased by prioritizing in time the various controllers. Detailed time simulations of a test system are reported.
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/90438

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