Enhancement of Voltage Profile by Using the L-Index Method toPlace FACTS Optimally

This paper examines an IEEE standard test system and uses MATLAB to test it using the Newton-Raphson method.Each bus's voltage magnitudes are analyzed, and FACTS like SVC and TCSC are added to the appropriate weak bus.The L-Index approach can be used to determine the best location for FACTS.When the L-index value approaches unity, it indicates that instability has been reached.The stability of the system is enhanced under fault and steady state situations from this instability point.By altering the Load Reactive Power at a certain bus, the system becomes disturbed.