Abstract
A great variety of mechanical and electrical equipment are distributed along the whole metro line. Equipment maintenance plays a very important role for metro operation safety. But how to ensure the scientificity and rationality of the maintenance plan remains a problem. Maintenance plan is theoretically supported by existing maintenance strategies. This paper proposes a new maintenance strategy which focuses on multi-equipment network systems based on topology vulnerability analysis. BIM is used as an object-oriented database to store the topological relations of network devices, express the equipment maintenance plan, and form a maintenance information storage and data analysis platform. Then vulnerability analysis of the topological structure is carried out. According to the results of the vulnerability analysis, the maintenance plan of the equipment with high degree of topology vulnerability could be optimized. A case study shows that the optimal maintenance plan based on the proposed maintenance strategy can improve the system reliability and reduce cost.
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