Bifurcation analysis of power systems with tap changer

Author

Liaw, Der-Chemg ; Fang, Kuan-Hsun ; Song, Chau-Chung

Author_Institution

Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

fYear

2005

fDate

19-22 March 2005

Firstpage

283

Lastpage

288

Abstract

A bifurcation analysis of nonlinear dynamics for electric power system with tap changer is presented in this paper. Based on a model of electric power system proposed by Dobson and Chiang (1988) with one extra tap changer added parallel to the local nonlinear power load, the saddle-node bifurcation and Hopf bifurcations are observed by treating the real power, reactive power and tap changer as system parameters. The occurrences of subcritical Hopf bifurcation and saddle-node bifurcation lead to the appearance of dynamic and static voltage collapses, respectively. These phenomena may generate the progressive decrease in voltage magnitude in electric power system.

Keywords

bifurcation; nonlinear dynamical systems; power system dynamic stability; Hopf bifurcations; bifurcation analysis; electric power system; nonlinear dynamics; saddle-node bifurcation; tap changer; Bifurcation; Induction motors; Nonlinear dynamical systems; Power generation; Power system analysis computing; Power system dynamics; Power system modeling; Power system stability; Reactive power; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Networking, Sensing and Control, 2005. Proceedings. 2005 IEEE

Print_ISBN

0-7803-8812-7

Type

conf

DOI

10.1109/ICNSC.2005.1461202

Filename

1461202