DE algorithm based comparison between two different combinations of FACTS devices under single line outage contingency condition

This paper proposes to run the Newton-Raphson load flow program with two different combinations of FACTS devices (TCSC with SVC and SSSC with SVC) separately and compare the results behind the voltage stability limit improvement and active power loss minimization scenario. The line based voltage stability indicator is used for voltage stability assessment. Differential Evolution (DE) algorithm is exploited for optimization of the voltage stability limit, active power loss and location and size of FACTS devices. The effectiveness of the proposed algorithm is validated by carrying out on the standard IEEE 30 bus system under single line outage contingency conditions.