Abstract: In order to meet the needs of recorded wave analysis in intelligence substation， the paper designs and develops the recorded wave analysis software based on QT. The software based on Comtrade format and IEC61850 file transfer model can download the Comtrade format wave file from intelligence electronic device， analyze the file， then display sample data， event report， and fault presentation graphically. Through the layered visual logic disply， the software provides the recorded analysis method which going from understand systematically to in-depth analysis， and makes the recorded wave analysis more intuitive， precision and scientific. This paper describes the overall software architecture and program flow of the recorded wave analysis， focuses on the function of downloading recorded wave file based on IEC61850 file transfer model， the sample data analysis algorithm， and describes software functions in detail.

Key words: SVG, file transfer model, visualization, recorded wave analysis, IEC61850