Abstract
The study of a metro traction power supply system reliability makes a significant contribution to researching on new power supply principles and configuration, and also providing a reference for system design and operation. According to the power supply structure and operation mode of the metro traction substation power supply system, based on the internal equipment, the reliability evaluation model of the traction substation is established by the block processing fault tree. An improved sequential Monte Carlo method is used to realize the quantitative reliability evaluation of the metro traction substation power supply system. The conclusions show that the reliability model and the sequential Monte Carlo simulation method proposed in this paper can obtain rich reliability indexes. Through visual simulation and theoretical calculation, the reliability of the metro traction power supply system can be effectively evaluated.
Highlights
As the only source of power for the subway, the metro traction substation mainly undertakes the task of voltage level conversion, AC/DC conversion and power transmission to the metro train
In [7], the metro traction power supply system was used as a repairable system, and the reliability distribution of the system was carried out by the GoalOriented (GO) methodology [8] and the improved group analytic hierarchy process [9], which had certain subjectivity
Li et al.: Reliability Evaluation of a Metro Traction Substation Based on the Monte Carlo Method substation
Summary
As the only source of power for the subway, the metro traction substation mainly undertakes the task of voltage level conversion, AC/DC conversion and power transmission to the metro train. The reliability evaluation of the metro traction substation is necessary. It is difficult to judge the reliability of metro traction substation by the single indicator and without considering the maintainability factor of the equipment. Based on the idea of the power supply structure division of a subway traction substation, the reliability evaluation model of a traction substation is established by constructing regional fault trees. The sequential Monte Carlo simulation method is introduced to solve the reliability multi-index of the subway traction. K. Li et al.: Reliability Evaluation of a Metro Traction Substation Based on the Monte Carlo Method substation. RELIABILITY EVALUATION INDICES AND MODEL OF A METRO TRACTION SUBSTATION A. RELIABILITY EVALUATION INDICES OF A METRO TRACTION SUBSTATION. The reliability evaluation indices of the metro traction substation are generally expressed by time and probability [11].
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