As a relatively mature zero carbon power technology, it is an inevitable trend that wind power is fully integrated into the power grid, which increases the difficulty of optimal active power dispatching. Aiming at the problem of active power optimal dispatching without abandoning wind power, a multi-objective optimal dispatching method with pumped storage is proposed. A mathematical model is presented to calculate both the comprehensive operating cost and the carbon emission cost of the system. A sorting index is provided to determine the priority for start-up and shutdown strategies of thermal power units, along with an analysis of unbalanced power. Based on the case analysis, through the comparative analysis of three different dispatch schemes, it is verified that the method proposed in this paper can achieve a complete grid connection of wind power and determine an effective optimal dispatch scheme. Moreover, the optimal dispatching scheme with pumped storage can effectively reduce the comprehensive operating cost and carbon emission cost, and is more beneficial to the full grid connection of wind power.