Application of graphic centrality on survivability evaluation in distribution power network

An approach concerning the survivability evaluation of each node in distribution power network is proposed in this paper. It is derived from the graph-theoretic centrality but the basic concept is modified so as to incorporate the practical electrical properties. The allowable power margin as well as the factor reflecting the route preference of incremental power subjected to load disturbance is considered in the modification. The simulation results prove that such an approach can systematically and quantitatively rank each substation in the case of contingency such as load fluctuation and integration. The proposed approach may benefit the decision making in flexible operation and automation of distribution power network.