基于健康指数的架空线路检测与分级维修联合决策研究OA

To address the difficulty of balancing long-term costs and failure risks in overhead transmission line maintenance,where inspection intervals are fixed and maintenance levels largely depend on empirical judgment,a joint inspection and maintenance decision-making method is proposed.A health index is introduced as a unified measure of the overall line condition,and a health index evolution model incorporating both continuous aging and shock-induced deterioration is developed.Considering the practical relationship between increasing maintenance costs and deteriorating equipment condition,a joint inspection and multi-level maintenance decision model is established based on the partially observable Markov decision process(POMDP).Finally,with the objective of minimizing the total life-cycle costs,a Monte Carlo tree search method is employed to jointly optimize the inspection intervals and multi-level maintenance strategies.Case studies show that,compared with conventional maintenance strategies,the proposed model significantly reduces the life-cycle cost under both fixed and condition-dependent maintenance cost scenarios,providing decision support for maintenance strategy optimization,risk control,and refined asset management of overhead transmission lines.