Title :
Region of attraction in a power system with discrete LTCs
Author :
Vournas, Costas D. ; Sakellaridis, Nikos G.
Author_Institution :
Nat. Tech. Univ. of Athens, Zografou, Greece
fDate :
7/1/2006 12:00:00 AM
Abstract :
This paper extends some previously obtained results on load tap changer (LTC) stability and derives detailed conditions for the stability of a dynamical system consisting of discrete LTC transformers based on Lyapunov´s direct method and its extension according to LaSalle´s Invariance Principle. The exact region of attraction of a two LTC system is constructed based upon tap position and controlled voltage values. Generalizations and extensions are finally discussed in the framework of extracting rules for post-load-shedding stability.
Keywords :
Lyapunov methods; load shedding; on load tap changers; power system dynamic stability; LaSalle´s invariance principle; Lyapunov direct method; discrete LTC transformers; load shedding; load tap changer stability; power system; region of attraction; Hybrid power systems; On load tap changers; Power system analysis computing; Power system dynamics; Power system modeling; Power system stability; Power systems; Stability analysis; Transformers; Voltage; Discrete systems; Lyapunov methods; load shedding; load tap changers (LTCs); power systems;
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
DOI :
10.1109/TCSI.2006.875173
