城市轨道交通故障测距系统软件设计

Design of Fault Location Software for Urban Railway System

为了对城市轨道交通牵引网短路故障点定位问题进行研究,满足牵引供电系统的可靠性要求,利用VS2003设计了城市轨道交通牵引网故障测距系统软件,接收从牵引变电所发送来的电压、电流信号,对牵引供电系统进行短路故障点定位,为快速修复线路和牵引供电系统继电保护提供依据,保证牵引供电系统的正常工作;软件基于CSerialPort类实现了牵引变电所与上位机之间的串口通讯,然后与ODBC数据库编程技术相结合,将串口数据实时保存在数据源文件中,实现了数据的实时采集和实时回放功能;最后进行联调的结果证明了该设计的有效性。

To research the issue of short--fault Location of urban railway traction nets and meet the requirements of the reliability of traction power supply system, VS2003 is used to design the fault location software for an urban railway traction nets. The software processes the voltage, current signals send from the Traction substation, and locate the fault point of the traction power supply system, which provide the basis for repairing lines and protection the traction power supply system and ensure the normal operation of the traction power supply system. The software implements the serial communication between traction substation and PC based on the CSerialPort class, and then combined with the ODBC database programming techniques in order that the serial data is saved in the data source file in real time, and enabling real--time data acquisition and playback function. Finally, the validity of the software was proved by the result of the testing.