Loadability analysis during single contingency with FACTS devices using Differential Evolution

This paper deals with the improvement of Maximum Loadability (ML) during single contingency. It is carried out by optimal placement and settings of multi-type Flexible AC Transmission System (FACTS) devices like Static Var Compensator (SVC), Thyristor Controlled Series Capacitor (TCSC) and Unified Power Flow Controller (UPFC) in the transmission network. The devices are located in the system by using Contingency Severity Index (CSI) and Fast Voltage Stability Index (FVSI) respectively which facilitates the enhancement of socio-economic benefits by minimizing the Installation Cost (IC) of FACTS devices and overloading. The problem is tested using IEEE 30 bus system and optimized using Differential Evolution (DE) algorithm.