As the penetration rate of renewable energy such as wind energy and photovoltaic energy is increasing rapidly, the voltage control of renewable energy bases (REBs) attracts wide attention. As an extensively applied voltage control method in renewable energy power grid, model predictive control (MPC) has many advantages, such as good dynamic performance, ability to coordinate various reactive power compensation devices with different time constants, etc. This paper introduces an MPC-based voltage control strategy for a REB, in which wind farms (WFs) and photovoltaic stations (PVSs) are coordinated to keep the voltage of the point of connection (POC) within the feasible range. Because different collection topologies of REB might affect the performance of the voltage control strategy, three collection topologies including radial topology, chain topology and hybrid topology are selected to analyze the control performance of the voltage control strategy. A 400 MW REB with 2 WFs and 3 PVSs was used to analyze the voltage control effect of the MPC-based voltage control strategy.