This paper focuses on a case of missed action of microcomputer protection for traction power supply under fault conditions.It conducts an in-depth study on the causes of missed action through analysis of locomotive protection and microcomputer protection from multiple angles and for the whole system.It analyzes the vehicle mechanism,the catenary,the fixed values of traction protection,the matching logic of fixed values,and the operation situation of primary and secondary equipment,through such methods as calculation,logical deduction and simulation testing.On this basis,it identifies the causes of missed action through analysis,and corrects the existing problems in operation.Moreover,it provides theoretical support for operation and maintenance in the future.
关键词
牵引供电微机保护/拒动/定值
Key words
microcomputer protection for traction power supply/missed action/fixed value
维普
万方数据