Abstract: Distribution static compensator (DSTATCOM)can effectively solve the impact of high penetration of photovoltaic and time-varying load on the active distribution network.Coordination reactive power optimization of distribution network with DSTATCOM and shunt capacitor banks (CB)can solve the impacts on power quality, which is attributed to the time-varying nature of photovoltaic and loads.This paper, considering the active power loss, voltage deviation, and compensation capacity as objective functions, establishes the coordination reactive power optimization model of DSTATCOM and CB.Aiming at the shortcomings of the original gray wolf algorithm (GWO), multi-objective differential evolution gray wolf optimization (MODEGWO)is proposed.The IEEE 33 system is selected as an example.Coordination reactive power optimization between DSTATCOM and CB is carried out, taking into account the time-varying photovoltaic system and load, and the dynamic operation strategy is obtained.The simulation results verify the rationality and validity of the proposed model.