Abstract:In order to ensure the power supply capacity of the power grid and reduce the generation limitation caused by the lack of coordination between the maintenance plan of the generation units and the power transmission and transformation equipment, an optimization method for the maintenance of power transmission and transformation equipment considering the matching of power generation capacity was proposed. Considering the coordination between the maintenance and seasonal capacity change of generation unit and the maintenance plan of transmission and transformation equipment, the matching index of power generation capacity is defined. The value of the index reflects the matching performance relationship between the maintenance of power transmission and transformation equipment and the generating capacity of the generation unit. Taking the maximization of the index as the optimization goal, the maintenance optimization model of transmission and transformation equipment considering the generation capacity matching was constructed by comprehensively considering the maintenance period of transmission and transformation equipment and the constraints such as power balance. According to the characteristics of the model, the solution method is presented. Finally, a case study based on the construction of IEEE-30 buses system shows that the proposed method can avoid the power generation capacity decline caused by the uncoordinated maintenance of generator sets and power transmission and transformation equipment, so as to improve the overall operation efficiency of the power grid.