Study on the Maintenance Plan Optimization model of High-speed Railway ATP Equipment with Improved GA Solution

The purpose of this study is to explore the appropriate maintenance intervals for ATP (Automatic Train Protection) on-board equipment of CTCS-3 (Chinese Train Control System) in considering of economic loss factor due to train delay for ATP equipment faults. Both reliability-centered maintenance theory and the multi-objective optimization method are applied in this study. The field data of train delay caused by ATP equipment malfunction were collected and applied to model parameter construction. Several contributions are achieved in the following. Firstly, three categories of maintenance behavior [mechanical maintenance-(1a), adjustment or partial replacement-(1b) and overall replacement-(2p)] were put forward in reflecting the actual maintenance behavior. Secondly, a nonlinear optimization model was established with the objective function of minimizing the economic cost in sum of maintenance cost and train delay loss, while considering the constraints of availability and reliability. Finally, an improved genetic algorithm based on penalty function is proposed to determine the reasonable preventive maintenance cycles for ATP devices. The results show that the optimized maintenance intervals are variable in considering of dynamic accumulated train delay loss caused by ATP equipment malfunction, which are different from other previous studies. This investigation may help us to make more appropriate maintenance decisions in view of practice and economy.


  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: 17p

Subject/Index Terms

Filing Info

  • Accession Number: 01764422
  • Record Type: Publication
  • Report/Paper Numbers: TRBAM-21-01927
  • Files: TRIS, TRB, ATRI
  • Created Date: Dec 23 2020 11:05AM