Title :
Placement of FACTS controllers using modal controllability indices to damp out power system oscillations
Author :
Kumar, B. Kalyan ; Singh, S.N. ; Srivastava, S.C.
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur
fDate :
3/1/2007 12:00:00 AM
Abstract :
Flexible ac transmission systems (FACTS) controllers are being used to damp out the power system oscillations. The effectiveness of these controllers depends on their optimal location in the power system network. A controllability index has been proposed to find the optimal location of the FACTS controllers to damp out the inter-area mode of oscillations. Three types of FACTS controllers have been considered, which include static var compensator, thyristor-controlled series compensator and unified power flow controller. The proposed controllability index is based on the relative participation of the parameters of FACTS controllers to the critical mode. A simple approach of computing the controllability indices has been proposed, which combines the linearised differential algebraic equation model of the power system and the FACTS output equations. The placements of FACTS controllers have been obtained for the base case as well as for the critical contingency cases. The effectiveness of the proposed method is demonstrated on New England 39-bus system and 16-machine, 68-bus system
Keywords :
controllability; damping; differential algebraic equations; flexible AC transmission systems; load flow control; oscillations; power transmission control; static VAr compensators; thyristor applications; FACTS controllers; New England 16-machine system; New England 39-bus system; New England 68-bus system; SVC; TCSC; UPFC; flexible AC transmission systems; inter-area modes of oscillations; linearised differential algebraic equation model; modal controllability indices; optimal location; power system oscillations damping; static VAr compensator; thyristor-controlled series compensator; unified power flow controller;
Journal_Title :
Generation, Transmission & Distribution, IET
DOI :
10.1049/iet-gtd:20050529