Abstract:Firstly, the power grid emergency capability is disassembled based on time dimension and space dimension, and the basic power grid emergency capability evaluation index system is constructed; secondly, considering the dynamic problem of the index evaluation standard, the index is quantified with triangular fuzzy number, and the optimization model for the aggregation of multiple fuzzy numbers is established; then, the triangular fuzzy numbers are processed by using the cut-off set and the fuzzy two-stage super efficiency SBM model based on a single time node is established to realize the static evaluation of power grid emergency capability. Finally, the dynamic comprehensive evaluation model of power grid emergency capability is established based on the disassembly of time dimension, which realizes the overall evaluation and sequencing of corresponding emergency capability, making the evaluation results more scientific and reasonable. The results of case study show that the method can effectively distinguish the areas where the emergency capability still needs to be improved, and to a certain extent, it overcomes the problem that the evaluation criteria need to change dynamically, and has strong objectivity.