Evaluation and decision method for operation efficiency of power grid

The invention relates to an evaluation and decision method for the operation efficiency of a power grid. The method comprises the following steps of: in terms of the safety and stability of the power grid, the utilization level of equipment, power supply reliability, the quality of electric energy, and asset management level and economic benefits, performing multi-layer, long-term, global and integral full-viewing-angle evaluation on the operation efficiency of the power grid by using a modern intelligent algorithm; and in terms of the safety and stability of the power grid, the utilization level of the equipment, the power supply reliability, the quality of the electric energy, promotion of coordinated development of the power grid, and the service of economic and social development, performing auxiliary decision on capital construction projects of the power grid in terms of project scores, unit investment scores and multi-target comprehensive optimization by using an optimization algorithm, and determining the sequence of the capital construction projects of the power grid, so that the operation efficiency of the power grid is improved, and decision support is provided for planning and construction of the power grid.