UHV AC/DC power transmission is of great significance to ensure the power supply reliability of the receiving power grid.In combination with the engineering practice,the coordination and maintenance strategy of transmission equipment for UHV receiving power network is studied in this paper.Take the case of a provincial power grid in central China,the important equipments in this UHV receiving power grid,strongly coupled with UHV transmission power,are found out.According to the quantitative evaluation index of power grid operation risk,maintenance principle and priority of maintenance arrangement for the relevant equipments are put forward.The proposed method can be used for the preparation of the annual maintenance plan for an UHV power grid.