Voltage and reactive power control is an important task to ensure the economic and safe operation of the distribution network. Coordinating multiple adjustment methods can improve the operation efficiency of the distribution network. In this paper, voltage and reactive power control devices are considered, such as on load tap changer (OLTC), voltage regulators (VR), capacitor bank (CB) and distributed generation (DG). And the optimization is proposed to solve the meaningless action in existing Volt control. Firstly, the voltage and reactive power optimization model of distribution network is established based on the branch power flow equation, which is relaxed to the mixed integer second-order cone programming (MISOCP). At the same time, considering the action cost of the devices, a rolling optimization mode based on model predictive control (MPC) is proposed. Finally, the effectiveness of the proposed strategy is verified based on the improved IEEE-33 bus test system.
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