Short circuit current and voltage sag profile studies for optimal location of DG in distribution network

Distributed Generation (DG) is currently attracting both distribution utilities and consumers due to its capability to solve most of network expansion’s problem; reduce power loss, enhance reliability of system, improve voltage level, enhance the efficiency of the power system networks and etc. DG has the capability to increase the short circuit level and due to the embedded nature of DG, the short circuit current (SCC) calculation is more complex. In most of the current researches, the location of DG is determined based on the capability to reduce power losses, enhance voltage profile and improve the voltage stability but not consider the impact of DG integration on SCC contribution. In this paper, the SCC and voltage sag profile studies were performed to determine the optimal location of DG integration in IEEE 30 bus test system.