Applying EMT analysis based target function approach for designing SSDC implementation for TCSC

SUBSYNCHRONOUS damping controller (SSDC) can be considered as an effective means to improve the damping characteristics of various controllable devices of the power system. In general, linear system analysis tools are applied widely in determination of the preliminary parameters for the damping controller. However, due to increasing amount of nonlinearities in the power system more detailed analysis techniques, such as electromagnetic transient (EMT) analysis, must more often be utilized in the final tuning of the controller. In this paper EMT analysis based target function approach for tuning and optimization of the SSDC implementation of Thyristor Controlled Series Capacitor (TCSC) is presented. Presented approach improves the feasibility and effectiveness of EMT analysis based tuning of the damping controller and enables illustration of the effectiveness of the controller in e.g. various operation conditions. As a conclusion, feasibility and performance of the presented approach is illustrated by means of practical SSDC design example.