Study on the impact of time delay to power system small signal stability

Author

Jia, Hongjie ; Guangyu, Na ; Lee, Stephen T. ; Zhang, Pei

Author_Institution

Sch. of Electr. Eng. & Autom., Tianjin Univ.

fYear

2006

fDate

16-19 May 2006

Firstpage

1011

Lastpage

1014

Abstract

The impact of time delay on power system small signal stability is investigated in this paper. Theory on dynamic system stability with time delay is first briefly reviewed. Then, a single-machine-infinite-bus system is employed to analyze the impact of time delay on the system small signal stability analysis. It is found that when the delay is small, it can be ignored. However, if the delay is large, it can significantly change the system dynamic characteristics, such as the oscillation mode and the system critical eigenvalues. Studies of this paper are helpful to appropriately consider the effect of time delay in power system controller design and small signal stability studies

Keywords

delays; eigenvalues and eigenfunctions; power system dynamic stability; dynamic system stability; power system controller design; power system small signal stability; single-machine-infinite-bus system; system critical eigenvalues; time delay; Control systems; Delay effects; Eigenvalues and eigenfunctions; Power system analysis computing; Power system control; Power system dynamics; Power system stability; Signal analysis; Signal design; Stability analysis; power systems; small signal stability; time delay;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrotechnical Conference, 2006. MELECON 2006. IEEE Mediterranean

Conference_Location

Malaga

Print_ISBN

1-4244-0087-2

Type

conf

DOI

10.1109/MELCON.2006.1653270

Filename

1653270