Analysis of state variable control of UPFC device in multi-machine power system

• Published in: 39th International Universities Power Engineering Conference, 2004. UPEC 2004 Vol. 1; pp. 308 - 311 Vol. 1
• Main Author: Robak, S.
• Format: Conference Proceeding
• Language: English
• Published: Bristol IEEE 2004; University of the West of England (UWE)
• Subjects: Applied sciences; Control systems; Damping; Disturbances. Regulation. Protection; Electric variables control; Electrical engineering. Electrical power engineering; Electrical machines; Electrical power engineering; Exact sciences and technology; Miscellaneous; Performance analysis; Power electronics, power supplies; Power networks and lines; Power system analysis computing; Power system control; Power system modeling; Power systems; Regulation and control; Vectors; Voltage; Performance evaluation; Flexible AC transmission systems; Unified power flow controller; Power electronics; Linear control; State variable; Vibration damping; LQ control; Electromechanical oscillation; Multimachine power system; Electrical network; Power control; Vibration control; Control device
• ISBN: 9781860433658; 1860433650

An analysis of state variable control of UPFC device in multi-machine power system is presented. In order to determinate the influence of individual state variables on UPFC control efficiency the linear system model has been used. The performed analysis has been focused on damping of electromechanical oscillations. A few cases of UPFC control function modes have been analysed. For each case a detailed analysis of variable states has been performed using the LQR method. The paper presents a summary of analysis carried out on a three-machine power system.