Derivation of an energy function reflecting damping effects in multi-machine power systems

Author

Moon, Young-Hyun ; Kwon, Yong-jun ; Ryu, Heon-Su ; Choi, Byoung-Kon

Author_Institution

Dept. of Electr. Eng., Yonsei Univ., Seoul, South Korea

Volume

1

fYear

2001

fDate

2001

Firstpage

461

Abstract

This paper presents a new energy function reflecting the damping effect in multimachine power systems. The Lyapunov direct method provides precise and rigorous theoretical backgrounds for stability analysis of nonlinear systems. Incorporating damping effects into accurate estimates of the domain of attraction, which is a minor but crucial point, has been attempted with long history to yield partial success for single machine systems. In this paper, a damping-reflected energy function has been generalized for application to multimachine systems. The generalized energy function is tested for the WSCC 9-bus system to show the semi-negativeness of its time derivative

Keywords

Lyapunov methods; control system analysis; damping; nonlinear control systems; power system stability; Lyapunov direct method; WSCC 9-bus system; attraction domain; damping effects; damping-reflected energy function; energy function; multimachine power systems; nonlinear systems; stability analysis; time derivative semi-negativeness; Damping; History; Lyapunov method; Nonlinear systems; Power system analysis computing; Power system stability; Power systems; Stability analysis; System testing; Yield estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2001. Proceedings of the 40th IEEE Conference on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-7061-9

Type

conf

DOI

10.1109/.2001.980143

Filename

980143