A novel control strategy for TCSC to damp subsynchronous oscillations

• Published in: IEE conference publication pp. 181 - 186
• Main Authors: Subhash, S, Sarkar, B.N, Padiyar, K.R
• Format: Conference Proceeding
• Language: English
• Published: London IEE 2001
• Subjects: a.c. transmission; Applied sciences; Control of electric power systems; Control system analysis and synthesis methods; Control system design and analysis; Disturbances. Regulation. Protection; Electrical engineering. Electrical power engineering; Electrical power engineering; Exact sciences and technology; Power and energy control; Power convertors and power supplies to apparatus; Power electronics, power supplies; Power engineering computing; Power networks and lines; Power system control; Stability in control theory; circuit oscillations; power system stability; SSR oscillations damping; EMTP; series compensation; thyristor convertors; control system synthesis; flexible AC transmission systems; power system subsynchronous oscillations; compensation level; power system analysis computing; power transmission control; subsynchronous resonance; phase unbalance concept; discrete control strategy; SSR oscillations mitigation; compensation; reactive power control; control design; control system analysis computing; FACTS; Oscillation modes; Alternating current network; Damping coefficient; Flexible AC transmission systems; Power system control; Control system; Theoretical study; Unbalanced conditions; Implementation; Thyristor controlled series compensators; Optimal design; Thyristor circuits; Subsynchronous resonance; Experimental result; Transmission line; Electrical network; Torsion torque; Numerical simulation; Series compensation
• ISBN: 9780852967454; 0852967454
• ISSN: 0537-9989
• DOI: 10.1049/cp:20010539

In this paper a novel discrete control strategy to mitigate subsynchronous resonance (SSR) oscillations is proposed for thyristor controlled series compensators (TCSC) having a discrete type of control over compensation level, since it behaves like a conventional series compensation under normal conditions. The control strategy is based on the phase unbalance concept and is simple and easy to implement in hardware.