Fault Analysis of Power System Transient Stability with Thyristor-Controlled Series Capacitor Controller Model Using Flower Pollination Algorithm for Its Parameters

This paper proposed the dynamic security assessment for the transient stability using thyristor-controlled series capacitor (TCSC) controller. The stability criteria are based on the severity indices for analyzing the fault on the power system. The index uses time-domain analysis simulation, which makes it easier and simpler to implement. The optimal location and parameter setting of the TCSC is formulated as an optimization problem solved by using the flower pollination algorithm (FPA) due to its higher convergence rate. The proposed index is tested on the modified IEEE 14-bus and IEEE 68-bus, large-scale system. The effects of a three-phase short-circuit fault, different fault locations, and fault clearing method are then further discussed. An analysis is done to determine how the faults on lines affect the transient stability of the load and generator bus in the system. The findings show that by employing the TCSC lead-lag controller using the FPA for tuning, the voltage drop was improved and stability margins were greatly increased with damping out transient power oscillation. To demonstrate the effectiveness of using the proposed FPA to solve the suggested problem, the results are also compared with that of artificial bee colony to prove its robustness.