voltage stability; emergency control; system protection schemes; tap changer blocking; load shedding
Abstract :
[en] This paper reports on prospective tests of a system protection scheme against long-term voltage instability relying on a set of distributed controllers, each monitoring a transmission voltage, blocking tap changers and shedding loads in a zone. The emergency actions adjust in magnitude and location to the disturbance. Each controller acts in closed-loop, which guarantees robustness. The method is illustrated on a real-life model of the Western region of the RTE system. The choice of the controller settings is discussed in some detail and examples of performance are given, combining the above remedial action with capacitor switching and secondary voltage control.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Capitanescu, Florin ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Otomega, Bogdan
Lefebvre, Hervé
Sermanson, Vincent
Van Cutsem, Thierry ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes et modélisation
Language :
English
Title :
Decentralized tap changer blocking and load shedding against voltage instability: prospective tests on the RTE system
Publication date :
October 2009
Journal title :
International Journal of Electrical Power and Energy Systems
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