Research on Reliability Evaluation of Traction Power Supply Equipment Considering Human Factors

Human error is one of the important factors that affect the reliability of traction power supply equipment. However, the existing reliability evaluation methods of traction power system and equipment often neglect the influence of human factors. This paper focuses on this issue, and the task scenes are classified into three kinds: equipment status monitoring type, equipment emergent repairing type, and equipment periodic maintaining type. First, FMEA is used to qualitatively analyze the human error in each scenario. Then, the human reliability analysis methods (HRA) of three scenarios are proposed to quantify the human error probability (HEP). Finally, the example demonstrated that the proposed methods can quantify the probability of HEP and characterize the influence of human error on the reliability of traction power supply equipment.