Resilience index system and comprehensive assessment method for distribution network considering multi-energy coordination

In the integrated energy system (IES), multi-energy coordination can provide power supply for distribution networks under extreme disturbances, yielding a positive impact on the resilience. This paper proposes a resilience assessment index system and its corresponding comprehensive assessment method for distribution networks considering multi-energy coordination. Firstly, a set of multi-dimensional resilience assessment indexes is selected based on the analysis of the resilience influence factors, in which multi-energy indexes are introduced to quantify the influence of multi-energy coordination. Secondly, a resilience assessment index system is established as the network hierarchical structure based on the analytic network process (ANP). The assessment index system can reflect the correlations among indexes, making it applicable for the resilience assessment. Then, an optimal weighting model is built to combine the subjective and objective factors, yielding more scientific comprehensive weights of indexes. Finally, the assessment results of distribution network resilience are obtained based on the fuzzy comprehensive assessment method, making the most of each index information. Case study shows the effectiveness of the proposed assessment index system and method in resilience assessment for distribution networks considering multi-energy coordination.