牵引供电馈线继电保护问题分析及应对措施

Analysis and Countermeasures of Relay Protection Problems of Traction Power Supply Feeder

针对一起故障情况下牵引供电计算机保护拒动的案例,通过全系统多角度对机车和计算机保护进行分析,深究拒动产生的原因。通过计算、逻辑推演、模拟试验等多种方法对车辆机构、接触网、牵引保护定值、定值搭配的逻辑、一二次设备的运行情况进行分析,经过分析找出拒动原因,并对运行中存在的问题进行更正,同时也为后续运维提供理论支撑。

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 fi xed values of traction protection,the matching logic of fi xed values,and the operation situation of primary and secondary equipment,through such methods as calculation,logical deduction and simulation testing.On this basis,it identifi es 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.