Subway transformer maintenance strategy optimization method based on full life cycle cost

According to the metro transformer maintenance strategy optimization method based on the full-life-cycle cost, a transformer maintenance strategy optimization model based on the full-life-cycle cost under the actual working background of the metro power supply transformer is constructed, and related cost parameters involved in the operation process of the metro power supply transformer are fully considered; and meanwhile, the maintenance effects of major maintenance and minor maintenance are comprehensively considered, so that the accuracy of a model optimization result is improved, and the reliability of the model result is improved. Compared with an existing transformer maintenance strategy optimization method based on full life cycle cost, the method not only can determine the optimal life of the transformer, but also can comprehensively consider the optimal overhaul moment under the double targets of the fault rate threshold and the minimum cost rate. The optimization result can provide more scientific an