The invention relates to a dynamic reactive power optimized configuration method for reducing the problem of wind abandonment in a large wind power grid-connected area, and belongs to the technical field of power system safety and control. First, in order to ensure that a wind turbine of a wind power plant side is not off-grid during normal operation, the voltage safety domain of a wind power plant is calculated on the wind power plant side. Then, calculation results of each wind power plant are uploaded to a grid wind power collection station control system, the reactive power output constraint is calculated on a grid wind power collection station side, and the calculation results are returned to each wind power plant. Iteration is performed according to the first two steps until convergence. The method of the invention fully considers the voltage safety constraint of the wind power plant and a main network side, and can ensure the normal operation of other wind power plants after onewind power plant is disconnected from the network. The method can solve the grid voltage safety domain value through rapid iteration, and the calculated voltage safety domain value has certain robustness to the active power output of the wind power plants, which is beneficial to the voltage control of the power grid.