Abstract: How to coordinate between power grid safety，low carbon and economic costs to achieve the

maximum social benefits has a great impact on the "double carbon" strategic goal put forward by China

government. Therefore，a multi-objective optimization method for elastic power grid considering resilience index

was proposed，and the concept of resilience index was introduced，which was used to evaluate the operation stability of the power system in multi-aspects. With resilience index and system operation cost as two independent objectives for optimization calculation，combine with Pareto optimization theory，group search algorithm was adopt to realize the multi-attribute coordination operation of the elastic power grid. Finally，the simulation analysis was conducted on the IEEE-30 and IEEE-57 test systems to verify the correctness and effectiveness of the proposed method.

      Key words: elastic power grid；resilience index；group search optimizer （GSO）；multi-objective optimization