TheSpaperSstudies on reactive power compensation for the power system with doubly fed wind farm, meanwhile establishes the reactive power optimization model based on minimum active power loss and the minimum node voltage deviation, then proposes a tracking center locus interior point method to achieve reactive power optimization. An adaptive compression factor is introduced into the traditional interior point method based on the tracking center trajectory interior point method, by using the dynamic convergence of the adaptive compression factor, the local search ability of the algorithm is improved, and the efficiency of the algorithm is improved. The simulation test is carried out in the IEEE14 system, the experimental results show the effectiveness of the proposed reactive power optimization algorithm, the algorithm can reduce the active power loss, and the other objective function value can be improved to different extent.