Reliability Evaluation System for Traction Power Supply System of Electric Railways

The traction power supply system, as a very important part of electric railways, provides energies for the running trains. Its reliability is directly related to the operation dependability of the railways. In this paper, the characteristics of the traction power supply system of Chinese electric railways are fully considered. In addition, according to the features of design and operation, the demand for reliability data acquisitions and the calculation methods of reliability indexes are studied in this paper from two aspects of the power supply services and the power supply facilities. Because of the big data technology involved in massive data statistical analysis, a SQL database has been built. And the reliability statistical analysis software of the traction power supply system based on B/S structure has been established by Web technology. The analysis software shares the information fully with the management information system and the dispatch system. Thereupon then the software forms a basic data collection and reliability evaluation system for the traction power supply system in China, which can serve as the basis for the operation and maintenance department to implement management.