Abstract
This paper deals with damping of power system oscillations using the SSSC. A robust damping controller based on Fuzzy Logic is proposed after its operation principles are fully analyzed. The only input signal for the damping controller is the real power measurement at the location of the SSSC to generate the modulation index for controlling the injected voltage of the VSC while its phase angle is required to remain constant with respect to a local reference voltage vector. Real-time simulations at the switch level are conducted to demonstrate the validity of the proposed damping controller using the RTDS interfaced with an external DSP-based digital control system.
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