Title :
Control system design of UPFC for power system damping enhancement taking into account rating of converter during oscillation
Author :
Kohno, H. ; Yokoyama, A.
Author_Institution :
Tokyo Univ., Japan
Abstract :
The unified power flow controller (UPFC) has the possibility to damp power system oscillations more effectively than power electronics applied devices such as SVG and TCSC. In this paper, a control system design of a UPFC for power system damping enhancement based on eigenvalue control method was proposed. As a result, it was made clear that the best design method is to determine steady-state value of UPFC control variables and control parameters of UPFC such as gains and time constants simultaneously because controllability of UPFC depends on the steady-state values of UPFC and the power flow condition. A UPFC control system, taking into account the ratings of power converters, is proposed. The effectiveness of the proposed control is verified by the digital time simulation.
Keywords :
control system analysis computing; control system synthesis; controllability; damping; eigenvalues and eigenfunctions; flexible AC transmission systems; load flow control; oscillations; power convertors; power system analysis computing; power transmission control; UPFC; control parameters; control simulation; control system design; control variables; controllability; digital time simulation; eigenvalue control method; power converter rating; power flow condition; power system damping enhancement; unified power flow controller; Control systems; Damping; Electric variables control; Load flow; Power capacitors; Power electronics; Power system control; Power systems; Steady-state; Thyristors;
Conference_Titel :
Electric Power Engineering, 1999. PowerTech Budapest 99. International Conference on
Conference_Location :
Budapest, Hungary
Print_ISBN :
0-7803-5836-8
DOI :
10.1109/PTC.1999.826595
