Grid-connected operation of distributed generators（DG）and energy storage systems（ESS）make power restoration of distributed network more complex.Constraint conditions of isolated island operation and the reserved capacity model for the isolated island are proposed based on power-adjustable DG and ESS and considering high rate discharging，charging state of ESS and operation time of isolated island.A power restoring model for distributed network is put forward with maximum restored power load as the objective function and the constraints of reserved capacity，open-loop，line flow and node voltage taken into account.An improved greedy algorithm of the power supply area for power restoration is presented based on the radical network and the characteristic of step by step load access，which is applied in operating reconfiguration and islanding of faulty distribution line with maximum power supply capacity and minimum line loss rate as the criteria for selection.Two typical cases are studied to test and verify the model and algorithm，and the efficiency of the algorithm is analyzed and compared with other algorithms.