Motor train unit traction system service safety assessment method

The invention relates to a service safety assessment method for a motor train unit traction system. The method comprises the following steps: a safety assessment preparation stage: analyzing the basic condition of the motor train unit traction system to be assessed; a risk identification stage: identifying risk factors of the motor train unit traction system and safety events caused by the risk factors; and a safety evaluation analysis stage: selecting a safety evaluation method according to the identified risk factor characteristics, dividing evaluation units, and calculating and determining a risk value of the traction system or part by analyzing and calculating the occurrence probability of a safety event and possible loss. According to the service safety assessment method for the traction system of the motor train unit, the current remaining life of the service traction system and the current remaining life of all components of the service traction system can be analyzed and calculated, a reasonable maint