|54.||On-line identification and control through series converter voltage of a unified power flow controller
Rahim, Abu H.M.A. (Department of Electrical Engineering, King Fahd University of Petroleum and Minerals); Al-Baiyat, Samir A. Source: Mediterranean Journal of Measurement and Control, v 2, n 3, 2006, p 113-118
Publisher: Softmotor Ltd.
Abstract: The dynamic performance of a power system can be improved by controlling the voltage magnitude and phase angle of the converter voltages in the unified power flow controller (UPFC). Self-tuning adaptive control of the voltage magnitude of the series converter for stabilization of a power system is presented in this paper. The plant parameters are identified through a regressive least square algorithm and the stabilizing control is derived through a pole-shifting technique using the adaptive plant model. The controller has been tested for ranges of operating conditions and for various disturbances. From a number of simulation studies on a single machine infinite bus power system it was observed that the adaptive algorithm converges very quickly and also provides robust damping profiles. Copyright © 2006 SoftMotor Ltd. (15 refs.)
Ei controlled terms: Voltage control - Self tuning control systems - Identification (control systems) - Online systems - Power control - Flow control - System stability - Regression analysis - Least squares approximations - Computer simulation
Uncontrolled terms: Unified power flow controller - Series converter voltage - Pole-shifting technique - Damping enhancement
Classification Code: 731.3 Specific Variables Control - 731.1 Control Systems - 722.4 Digital Computers and Systems - 731.4 System Stability - 922.2 Mathematical Statistics - 921.6 Numerical Methods