The Study Of Digital Recording Device For Traction Substation Based On IEC61850

With the development of electric power system digitized substation vigorous, the research on digitized substation for railway traction is also in progress, digital wave record device is digital traction substation necessary equipment. Therefore, the research meeting IEC61850 traction substations with digital wave record device has a certain value for engineering application. Three also has no this aspect research in domestic railway area.This paper firstly introduced the IEC61850 standard system structure, the main feature, communication structure, information interaction methods and modeling method. On analysis of recorded wave device modeling requirements basis, the model of traction substation digital recording device was modeled.Through the model to understand the recording device's internal logic and timing relationships, laying the foundation for the next hardware design.Secondly, the overall hardware structure of recording device was given based on the analysis of the recorded of traction substation. According to the hardware structure of recording device, the overall software design of recording device was given,including fault data record unit and fault data analysis unit. the detailed design to the main module were carried on,mainly including:the message processing module, the data synchronization module, the fault recording module, the data communication module, the data storage module and the fault reappearance module.Finally, the software design were tested. Software simulation platform based on WinPcap in the personal computer.Wave record device accessed sample value from the relay protection tester, which startuped wave record through the discrimination algorithm. Wave recorded files were stored for COMTRADE format file.At last,the record wave files were read through the waveform analysis software.