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- Title
Development of Overhead Contact System Fault Simulation Platform for Electrical Railway.
- Authors
TIAN Shengping; ZHANG Xuewu; GUAN Jinfa; CHEN Junqing
- Abstract
Overhead Contact System (OCS) is the core equipment supporting the operation of electrified railway. Due to the need of robustness research and fault monitoring and diagnosis of OCS, a large number of different types of fault characteristic data are required, but this data is difficult to obtain from the railway in operation. Therefore, generating credible fault data through effective simulation is an effective means to study OCS fault in theory. Based on finite element method, using the force equivalent method to simulate all kinds of OCS faults, build the corresponding simulation model and establish the fault simulation platform, so as to generate a large number of OCS fault simulation data through the platform, which solves the problem that it is difficult to obtain fault data. According to the mechanism and mathematical characteristics of the fault, the fault model is divided into five categories, the equivalent methods of different fault types are established, the main framework of the platform is proposed, and the four functional modules of OCS parameter input, static solution, dynamic solution and data analysis are completed. The calculation example calculates the dynamic response of the OCS in a short time when the suspension string breaks and the shackle of the locator falls off at the specified position. It is found that when the suspension string fault occurs, the acceleration at the fault changes the most, and shows a attenuation trend with time. The farther away from the fault location, the less obvious the vertical vibration is. When the shackle fault occurs, the acceleration in the pull-out direction changes significantly, and the changes in the line direction and vertical direction fluctuate less, It shows that the platform can provide relevant qualitative and quantitative conclusions in OCS fault diagnosis, and provide theoretical support for OCS design, fault diagnosis and identification.
- Publication
Railway Standard Design, 2023, Vol 67, Issue 12, p176
- ISSN
1004-2954
- Publication type
Article
- DOI
10.13238/j.issn.1004-2954.202206010001