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

Volume

53

Issue

7

fYear

2006

fDate

7/1/2006 12:00:00 AM

Firstpage

1610

Lastpage

1618

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;

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2006.875173

Filename

1652983