Subsynchronous Resonance Mitigation in SMIB System Using GCSC and TCSC with Conventional and Fuzzy Logic Controllers

Abstract

Power Systems are playing a vital role in the energy development and energy transmission in a most efficient and useful ways. Need of power transmission requires huge series capacitors to bring in the stability of massive amount of electrical energy. However, there are practical scenarios where these series capacitors are not capable of being synchronous with the turbine generators and thus causing Subsynchronous resonance (SSR). Though we have Flexible AC transmission systems (FACTS), we still have no control on the SSR. Therefore, Mitigation of SSR as a focus on TCSC controlled power system had been introduced with constant and enhanced power control methodologies and developed. Still there is room for improvement and hence we have introduced a GCSC controlled power transmission system. This paper proposes an approach for Subsynchronous resonance mitigation in Single Machine Infinite Bus System (SMIB) System Using GCSC and TCSC with Conventional and Fuzzy Logic Controllers compared. We have adopted the First IEEE benchmark a so-called SMIB system and used MATLAB/SIMULINK to witness the controllability on SSR. To evaluate performance of both devices, we have taken three different ratings of GCSC. We have projected a detailed analysis of comparing TCSC designed with conventional methods are inadequate to control the dynamic torsional oscillations when compared to the proposed GCSC ratings. Results and analysis proves that our Proposed design of GCSC controlled power system has the better performance results with inclusion of Takagi Sugeno fuzzy logic controller over the proportional(P) controller with respective of all the proposed Ratings Considered in the design. We are able to damp the dynamic power Oscillations and SSR with this method.