The frequent occurrence of extreme disaster events with low probability and high risk has posed a serious threat to the safe and stable operation of urban distribution networks. Therefore

a kind of resilience enhancement model of active distribution networks taking into account the collaboration of multiple scheduling and repair strategies is proposed. With the minimum cost of operation and of fault repair time of distribution network as the target

the mathematical model for such collaborative optimization of multiple strategies as the gas-fired unit real time dispatch safety feasibility as the constrain

comprehensive consideration of dispatching of the gas-fired unit

reconfiguration of network topology and power flow optimization and fault restoration is set up. For the above model

the generalized Benders decomposition method is used to perform iterative solution in the master-subproblem optimization frame-work. A modified IEEE 33-bus active distribution network is taken as the test example

different operation scenarios are designed for simulation and analysis

and the effectiveness of the proposed model and solution method is verified.