Active distribution grid integrates abundant controllable resources

performs optimization and control of system voltage and reactive power flow and can improve compatibility of distribution grid to DG and enhance optimization operation level of the network. In this paper

a reactive power voltage optimiza-tion method of active distribution network considering the coordination of multiple active managementmeans is proposed. A two-stage reactive power voltage optimization strategy based on daily global optimiza-tion and period optimal adjustment is adopted. Firstly

the most optimal overall satisfaction of network lossand voltage deviation is taken as target to optimize the operation scheme of such long time regulating ele-ments as load tap changer

capacitor bank

contact switch and section switch etc. Then

with the aim ofminimizing the voltage fluctuation index

reactive power dispatching of DG and energy storage system iscarried out. Improved harmony search algorithm is used to solve the optimal model. Finally

the rationalityand superiority of the proposed reactive power and voltage optimization method are verified by a case study.