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IEEE C37.111-2013

IEEE C37.111-2013

$79.08

IEEE/IEC International Standard – Measuring relays and protection equipment – Part 24: Common format for transient data exchange (COMTRADE) for power systems

Published By Publication Date Number of Pages
IEEE 2013 73
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Revision Standard – Active. Also known as IEC 60255-24 Ed.2, this standard 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, DVD. It is not a standard for transferring data files over communication networks.

PDF Catalog

PDF Pages PDF Title
1 IEEE Std C37.111-2013 (IEC 60255-24)
4 CONTENTS
7 FOREWORD
IEEE Important Notices and Disclaimers
8 IEEE Participant list link
9 INTRODUCTION
10 1 Scope
2 Normative references
3 Terms and definitions
11 4 File and data storage
4.1 Categories of files
4.1.1 General
12 4.1.2 Executable files
4.1.3 Text files
4.1.4 Data files
4.2 Critical/non-critical data
13 4.3 Data representation
4.3.1 General
4.3.2 Binary data
4.3.3 ASCII data
4.4 Data field delimiters and lengths
4.4.1 General
4.4.2 Carriage return/line feed delimiter
14 4.4.3 Comma delimiter
4.4.4 Field lengths
4.5 Floating point notation for ASCII data
15 4.6 Methods of accessing data in files
4.6.1 General
4.6.2 Random access files
4.6.3 Sequential files
16 4.7 Primary to secondary ratios
5 COMTRADE files
5.1 General
5.2 Header file (.HDR)
17 5.3 Configuration file (.CFG)
5.4 Data file (.DAT)
5.5 Information file (.INF)
6 Header file
6.1 General
18 6.2 Content
6.3 Filenames
6.4 Format
7 Configuration file
7.1 General
7.2 Content
19 7.3 Filenames
7.4 Format
7.4.1 General
7.4.2 Station name, identification and revision year
20 7.4.3 Number and type of channels
7.4.4 Analog channel information
22 7.4.5 Status (digital) channel information
7.4.6 Line frequency
7.4.7 Sampling rate information
23 7.4.8 Date/time stamps
24 7.4.9 Data file type
7.4.10 Time stamp multiplication factor
7.4.11 Time information and relationship between local time and UTC
25 7.4.12 Time quality of samples
26 7.5 Missing data in configuration files
7.6 Configuration file layout
8 Data file
8.1 General
8.2 Content
8.3 Data filenames
27 8.4 ASCII data file format
28 8.5 Example ASCII data sample
8.6 Binary data files
Figure 1 – Example of data sample in ASCII format
30 8.7 Example of binary data sample
9 Information file
9.1 General
9.2 Content
9.3 Information file filenames
9.4 Information file structure
9.4.1 General
Figure 2 – Example of data sample in binary format
31 9.4.2 Public sections
9.4.3 Private sections
9.5 File characteristics
32 9.6 Section headings
9.6.1 Public and private section header name formatting rules
9.6.2 Public section header naming examples
9.6.3 Private section header naming examples
9.7 Entry line
9.7.1 General
33 9.7.2 Comment lines
34 9.7.3 Value string
9.8 Adding, modifying, and deleting information
9.8.1 General
9.8.2 Deleting information
9.8.3 Adding information
9.9 Public section header and entry line definitions
9.10 Public record information section
9.10.1 General
35 9.10.2 Section header definition
9.10.3 Public record information entry line definition
36 9.11 Public event information definition
9.11.1 General
9.11.2 Section heading definition: [Public Event_Information_#n]
9.11.3 Public event information entry line definition
37 9.12 Public file description section
9.12.1 General
9.12.2 Section heading definition: [Public File_Description]
9.12.3 Public file description entry line definition
38 9.13 Public analog channel section
9.13.1 General
9.13.2 Section heading definition: [Public Analog_Channel_#n]
9.13.3 Public analog channel entry line definition
9.14 Public status channel section
9.14.1 General
9.14.2 Section heading definition: [Public Status_Channel_#n]
9.14.3 Public status channel entry line definition
39 9.15 Sample .INF file
40 10 Single File Format COMTRADE (with CFF extension)
42 Annex A (informative) Sources and exchange media for time sequence data
45 Annex B (informative) Data exchange sampling rates
Figure B.1 – Typical signal processing
46 Figure B.2 – DSP solution
Figure B.3 – Example of sample rate conversion
47 Table B.1 – Frequencies corresponding to (ƒLCM = 384 x ƒbase) samples/cycle
Table B.2 – Frequencies corresponding to (ƒLCM = 3200 x ƒbase) samples/cycle
49 Annex C (informative) Sample file
55 Annex D (informative) Sample program for sampling frequency conversion
58 Annex E (informative) Example application of conversion factors
60 Annex F (informative) Sample COMTRADE file with CFF extension (with ASCII data)
62 Annex G (informative) Sample COMTRADE file with CFF extension (with binary data)
63 Annex H (informative) Schema for phasor data using the COMTRADE file standard
71 Bibliography
Figures
Tables

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IEEE C37.111-2013
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