Damping controller design for power system oscillations using global signals

• Published in: IEEE transactions on power systems Vol. 11; no. 2; pp. 767 - 773
• Main Authors: Aboul-Ela, M.E., Sallam, A.A., McCalley, J.D., Fouad, A.A.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.05.1996; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Circuit optimization; Control systems; Damping; Disturbances. Regulation. Protection; Electrical engineering. Electrical power engineering; Electrical power engineering; Exact sciences and technology; Frequency response; Modal analysis; Power networks and lines; Power system control; Power systems; Rotors; Signal generators; Tuning; Damping; Control robustness; Transient response; Stabilizator; Reactive current compensation; Electromechanical oscillation; Multimachine power system; Stability; Static reactive compensator; Electrical network; Control synthesis; Transfer function
• ISSN: 0885-8950; 1558-0679
• DOI: 10.1109/59.496152

This paper describes a new power system stabilizer (PSS) design for damping power system oscillations focusing on interarea modes. The input to the PSS consists of two signals. The first signal is mainly to damp the local mode in the area where PSS is located using the generator rotor speed as an input signal. The second is an additional global signal for damping interarea modes. Two global signals are suggested; the tie-line active power and speed difference signals. The choice of PSS location, input signals and tuning is based on modal analysis and frequency response information. These two signals can also be used to enhance damping of interarea modes using SVC located in the middle of the transmission circuit connecting the two oscillating groups. The effectiveness and robustness of the new design are tested on a 19-generator system having characteristics and structure similar to the Western North American grid.