Paper Title
Enhancement of voltage stability by using facts under normal and transient conditions
Abstract
In this paper an IEEE standard test system has been considered and Load flows were computed by using Newton
Raphson method with the help of MATLAB and a weak bus is identified. The bus that is with a low voltage magnitude is
incorporated with FACTS devices namely TCSC and SVC in order to improve the voltage under normal conditions. Then
the reactive power at a particular bus is increased until it reaches to the instability point and the voltage stability condition is
evaluated by using an L- index method. The values which approach unity imply that it reaches to instability, and
corresponding bus can be treated as weak bus i.e. with a highest value of L-index, and is incorporated with FACTS devices
to enhance the voltage stability under transient condition also.