Abstract
Static VAR compensators (SVCs) have been widely used in power systems to keep terminal voltages within bounds. The other application is to improve power systems damping, especially for loosely connected power systems. In this paper, a scheme using fuzzy logic control (FLC) is connected in parallel with a conventional voltage regulation loop to form a supplementary damping loop for the SVC to increase the system's transmission capacity. The FLC is based on bang-bang control, and provides damping across each connected line to the SVC. Damping is of particular importance especially for weakly coupled power systems. Using rotor-angle signals that are estimated from voltage and power measurements at each connected line to the SVC, a fictitious generator at the remote end of each connected line is identified. The SVC receives control signals from all fictitious generators, which are competing and reacting differently at different phases of system oscillations. The final control for the SVC combines the control signals from all fictitious generators, which are scaled according to their individual contributions to damping. The proposed signal structure guarantees robustness and effectiveness of the final control with respect to different loading and fault conditions. The FLC design is based on Lyapunov function analysis, and is simulated on a three-generator power system for performance evaluation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
