Distributed Static Series compensators in mitigating sub-synchronous resonance improved with ANFIS controller

This paper aims to verify the Distributed Static Series compensator (DSSC) functioning in mitigation of SSR in series compensated long transmission lines when connected to a steam-turbine generator. Two auxiliary controllers namely Fuzzy Logic Based Damping Controller (FLBDC) and Adaptive Neuro Fuzzy Inference System (ANFIS) controllers are designed and implemented in the conventional controller of DSSC to provide effective damping. The Fast Fourier Transform (FFT) is carried out in order to evaluate the effect of DSSC based on ANFIS controller in mitigation of SSR and LFO. The simulations were persuaded using MATLAB/Simulink,to IEEE second benchmark (SBM) model combined with DSSC module and the results were compared with the conventional controllers.