Title :
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
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;
Conference_Titel :
Power System Technology, 1998. Proceedings. POWERCON '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4754-4
DOI :
10.1109/ICPST.1998.729312
