VOLTAGE STABILITY ANALYSIS IN DISTRIBUTION SYSTEM FOR REALISTIC LOADS

Abstract

In this thesis, attempts have been made to analysis and understand the voltage stability or instability problem in a radial power distribution system. Although a lot of research work has been made and being carried out to understand the voltage instability problem in a transmission network, not significant amount of work has been carried_ out in this direction for power distribution system. Moreover, only constant load model has been used to analysis the voltage instability problem for power distribution system in the literature. However, in a power distribution system the power demand for almost all the loads which are connected, such as television, refrigerator etc. are voltage dependent in nature. Hence, for analyzing the voltage stability/instability problem in a radial power distribution system, it is more proper to take into account the voltage dependent characteristics of the loads instead of the constant power characteristics of the loads.