Vulnerability Assessment Method of Distribution Network Nodes Based on Jaya-AHP-EWM-MARCOS

The magnitude of node vulnerability in a distribution network is an important indication of its structural robustness. In order to identify the vulnerable nodes of distribution networks in a scientific and reasonable way, the paper firstly establishes a set of vulnerability assessment indexes based on the structural vulnerability indexes of the complex network theory and the state vulnerability indexes of the distribution network operation state. Then in order to keep the consistency of the judgment matrix of Analytic Hierarchy Process, the paper proposes the Analytic Hierarchy Process optimized based on Jaya algorithm. Finally, the weights of the indexes are assigned by combining Entropy Weight Method and improved Analytic Hierarchy Process to obtain the comprehensive assessment indexes of vulnerable nodes that take into account the topology and state changes of the distribution network, as well as combining the subjective experience and considering the objective data, and the utility function values of the nodes to be assessed are calculated by using the MARCOS method, and the vulnerability levels of the nodes are ranked according to them. Tests are conducted through the IEEE33 node system to verify the feasibility and practicality of the comprehensive index.