Voltage stability improvement using “Sen” transformer

This paper covers the modelling of the standard IEEE 14 bus system using the MATLAB package. The basic system is tested under large and small disturbances to study the dynamic behaviour of the system and the stability margins associated with the different configurations of the system. As a suggested solution to increase stability margins of the system, Sen transformer is added, modelled and tested to show the effect of the controller on the different stability margins under both large and small disturbances.