Genetic Algorithm Application to Making up Economic Maintenance Schedule

摘要

In order to make up the economic maintenance schedule, the total maintenance cost of all components listed up in the schedule is minimized maintaining reliability of the components by the use of the Genetic Algorithm (GA). The plant operation period of Y years can be represented as an integer array of size Y and the number of components N is represented as number of strings in the GA analysis. The total maintenance cost as the objective function is postulated as summationm of plant outage cost, implementation cost and no implementation cost. The maintenance schedules for the twenty components have been optimized by the GA, and compared with the constant interval schedule and the schedule optimized by the Simulated Annealing (SA) method. About thirty percents cost reduction has been achieved by the GA compared with the constant interval schedule and ten percents cost reduction has been achieved compared with the SA.