Distributed energy resources placement in distribution networks considering proximity to voltage collapse

The decline of voltage stability level is one of important factors which restrict the increase of load served by distribution companies. Major concern has been paid to voltage stability in transmission systems, but it can occur in distribution systems as well. Continuation Power Flow is a well-known method to analyze voltage stability phenomenon. It will be used to find the power margin index at each bus of the distribution system to identify the weakest buses from the voltage stability point of view. Those buses will constitute the optimal location for Distributed Energy Resources like Distributed Generation or Battery Storage Devices.