IEC 60255-24:2013

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 File and data storage
5 COMTRADE files
6 Header file
7 Configuration file
8 Data file
9 Information file
10 Single File Format COMTRADE
   (with CFF extension)
Annex A (informative) - Sources and exchange media
        for time sequence data
Annex B (informative) - Data exchange sampling rates
Annex C (informative) - Sample file
Annex D (informative) - Sample program for sampling
        frequency conversion
Annex E (informative) - Example application of conversion
        factors
Annex F (informative) - Sample COMTRADE file with CFF
        extension (with ASCII data)
Annex G (informative) - Sample COMTRADE file with
        CFF extension (with binary data)
Annex H (informative) - Schema for phasor data using the
        COMTRADE file standard
Bibliography

IEC 60255-24:2013 defines a format for files containing transient waveform and event data collected from power systems or power system models. The format is intended to provide an easily interpretable form for use in exchanging data. The standard is for files stored on currently used physical media such as portable external hard drives, USB drives, flash drives, CD, and DVD. This standard defines a common format for the data files and exchange medium needed for the interchange of various types of fault, test, and simulation data. The main changes with respect to the previous edition are as follows:
- this new edition allows single file format (with extension .CFF) in lieu of four separate files;
- the single file with .CFF extension contains four sections of information corresponding to .CFG, .INF, .HDR, and .DAT. The DAT section is either in ASCII or Binary;
- the following additional data file types are also supported: binary32 and float32.