Effects of sinusoidal load variations on dynamic stability of a parallel AC-DC power system

Author

Wang, Li ; Tseng, Tay-Yuan

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

2

fYear

1998

fDate

18-21 Aug 1998

Firstpage

1378

Abstract

This paper presents the analyzed results of sinusoidal load variations on a parallel AC-DC power system which has a damping controller to stabilize generator oscillations. The sinusoidal load variations are considered as periodic disturbances with different multiple frequencies based on system mechanical mode. Such disturbances are injected into the studied system by using a quasi infinite bus model and they will cause the studied system to have heteroparametric resonances. Dynamic stability of the studied system is investigated to determine the effects of mechanical-mode frequency as well as its associated multiple times on maximum amplitude of torque angle and rotor speed deviation

Keywords

damping; load (electric); oscillations; power system control; power system dynamic stability; damping controller; dynamic stability; generator oscillations stabilisation; heteroparametric resonances; mechanical-mode frequency; multiple frequencies; parallel AC-DC power system; periodic disturbances; quasi infinite bus model; rotor speed deviation; sinusoidal load variations; system mechanical mode; torque angle; Control systems; Damping; Frequency; Load management; Power generation; Power system analysis computing; Power system dynamics; Power system modeling; Power system stability; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on

Conference_Location

Beijing

Print_ISBN

0-7803-4754-4

Type

conf

DOI

10.1109/ICPST.1998.729312

Filename

729312