Assessment of Resiliency by incorporating DGs in Power Network using Graph Theoretic Approach

As the Power System Network/Infrastructure is continuously growing, so does its complexity. As a result, it is more prone to various adverse events which leads to disruption of power flow or continuity. In this paper an approach towards the power system resiliency has been tried with the help of betweenness centrality and minimum spanning tree concept of graph theory. Betweenness centrality of a power system network have been considered here to analyze resiliency of the system in order to find the most critical bus(es) or node(s) and along with that minimum spanning tree based on active power flow has been taken to find out the critical lines, so that what are the effects towards its associated transmission line(s) can be observed precisely. Also, the critical transmission lines based on Minimum Spanning Tree have been taken into consideration in order to harden them. In order to implement these simulations have been carried out on IEEE 57 Bus System.