Construction of a Multi-dimensional Resilience Assessment System for Urban Distribution Network Based on Association Rules

At the stage of urban distribution network resilience assessment, the assessment system is relatively low in perfection, resulting in a large difference between the assessment results and the actual situation. Therefore, a method for building a multi-dimensional resilience assessment system of urban distribution networks based on association rules is proposed. In the stage of selecting multi-dimensional resilience assessment indicators for urban distribution networks, association rules are introduced, and the relationship between distribution network operation data and distribution network resilience is analyzed by using support, confidence, and correlation coefficients. The positive and negative association rules of distribution network resilience are mined as the core, the sampling of global distribution network operation data is determined, and the constraint conditions of condition distribution are set. Based on the load effect of the distribution network and the state of distribution network components, the multi-dimensional toughness evaluation index of the urban distribution network can be selected. In the stage of setting the weight of the multi-dimensional toughness evaluation index of the urban distribution network, the influence of multi-dimensional toughness evaluation index parameters of the urban distribution network in an abnormal state solved by DFS in graph theory on the connection state of grid nodes is used, and the differential index weight of search results is combined. In this test result, under the design evaluation system, the analysis result of the overall load loss rate of the distribution network always keeps a high consistency with the actual value, the error is always stable within the 1.0% range, and the maximum error is only 0.88%.