1、 IEC 60255-24 Edition 2.0 2013-04 INTERNATIONAL STANDARD Measuring relays and protection equipment Part 24: Common format for transient data exchange (COMTRADE) for power systems IEC 60255-24:2013IEEE Std.C37.111-2013IEEE Std C37.111colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2013
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18、dvised that determination of the validity of any patent rights, and the risk of infringement of such rights, is entirely their own responsibility. 6 IEC 60255-24:2013 IEEE Std C37.111-2013 Published by IEC under license from IEEE. 2013 IEEE. All rights reserved. International Standard IEC 60255-24/I
19、EEE Std C37.111 has been jointly revised by the Power System Relaying Committee of the IEEE Power and Energy Society1in cooperation with IEC Technical Committee 95: Measuring relays and protection equipment, under the IEC/IEEE Dual Logo Agreement. This second edition cancels and replaces the first e
20、dition published in 2001 and constitutes a technical revision. The main changes with respect to the previous edition are as follows: a) The new edition allows single file format (with extension .CFF) in lieu of four separate files. b) The single file with .CFF extension contains four sections of inf
21、ormation corresponding to .CFG, .INF, .HDR, and .DAT. The DAT section is either in ASCII or Binary. c) The following additional data file types are also supported: binary32 (using 4 bytes to represent integer numbers) and float32 (using 4 bytes to represent real numbers). d) g55g75g72g3g70g82g81g191
22、g74g88g85g68g87g76g82g81g3g11g17g38g41g42g12g3g191g79g72g18g86g72g70g87g76g82g81g3g75g68g86g3g69g72g72g81g3g80g82g71g76g191g72g71g17g3g41g82g88g85g3g81g72g90g3g73g76g72g79g71g86g3g75g68g89g72g3g69g72g72g81g3g68g71g71g72g71g3at the end of the .CFG file/section in two separate lines. Two fields repres
23、ent the time information and the time difference between local and UTC time, and these two fields comprise one line. Another two fields represent the time quality of samples and comprise the last line of the file/section. e) Some of the fields in the Cog81g191g74g88g85g68g87g76g82g81g3 g11g17g38g41g
24、42g12g3 g191g79g72g18g86g72g70g87g76g82g81g3 g75g68g89g72g3 g69g72g72g81g3 g71g72g86g76g74g81g68g87g72g71g3 g70g85g76g87g76g70g68g79g3instead of non-critical. f) The use of Unicode UTF-8 characters has been added. However and because of the extensive use of the terms ASCII and Text throughout this d
25、ocument, any occurrence of these terms also inherently implies Unicode UTF-8. The text of this standard is based on the following IEC documents: FDIS Report on voting 95/308/FDIS 95/311/RVDFull information on the voting for the approval of this standard can be found in the report on voting indicated
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28、rs which are considered to be useful for the correct understanding of its contents. Users should therefore print this document using a colour printer. 1A list of IEEE participants can be found at the following URL: http:/standards.ieee.org/downloads/C37/C37.111-2013/C37.111-g21g19g20g22g66g90g74-par
29、ticipants.pdf IEC 60255-24:2013 7 IEEE Std C37.111-2013 Published by IEC under license from IEEE. 2013 IEEE. All rights reserved. INTRODUCTION The increasing use of digital technology in devices such as protection, oscillograph, measurement, and control apparatus in electric power substations has cr
30、eated the potential for accumulating large numbers of digital records of power system transient events. In addition to these sources of digital data, analog and digital power-system simulators may be used to generate digital records. The users of these records are faced with the problem of having to
31、 cope with different formats used by each system to generate, store, and transmit records. 8 IEC 60255-24:2013 IEEE Std C37.111-2013 Published by IEC under license from IEEE. 2013 IEEE. All rights reserved. MEASURING RELAYS AND PROTECTION EQUIPMENT Part 24: Common format for transient data exchange
32、(COMTRADE) for power systems 1 Scope This International 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
33、 files stored on currently used physical media such as portable external hard drives, USB drives, flash drives, CD, and DVD. It is not a standard for transferring data files over communication networks. This standard defines a common format for the data files and exchange medium needed for the inter
34、change of various types of fault, test, and simulation data. The rapid evolution and implementation of digital devices for fault and transient data recording and testing in the electric utility industry have generated the need for a standard format for the exchange of time sequence data. These data
35、are being used with various devices to enhance and automate the analysis, testing, evaluation, and simulation of power systems and related protection schemes during fault and disturbance conditions. Since each source of data may use a different proprietary format, a common data format is necessary t
36、o facilitate the exchange of such data between applications. This will facilitate the use of proprietary data in diverse applications and allow users of one proprietary system to use digital data from other systems. 2 Normative references IEEE Std C37.118TM-2005, IEEE Standard for Synchrophasors for
37、 Power Systems IEEE Std C37.232TM-2007, IEEE Recommended Practice for Naming Time Sequence Data Files IEEE Std 260.1TM-1993, IEEE Standard Letter Symbols For Units of Measurement (SI Units, Customary Inch-Pound Units) IEEE Std 280TM-1985 (R1996), IEEE Standard Letter Symbols for Quantities Used in E
38、lectrical Science and Electrical Engineering (DOD) IEEE Std 754TM-2008, IEEE Standard for Floating Point Arithmetic ISO 80000-1, Quantities and units Part 1: General 3 Terms and definitions For the purpose of this document the following terms and definitions apply: 3.1critical data any data that are
39、 necessary for reproduction of the sample data IEC 60255-24:2013 9 IEEE Std C37.111-2013 Published by IEC under license from IEEE. 2013 IEEE. All rights reserved. 3.2non-critical data any data in the COMTRADE configuration file which are not absolutely necessary for reproduction of the sample data,
40、and some variables provided in the configuration file that may not be relevant to a particular application 3.3COMTRADE Common Format for Transient Data Exchange format of time sequence data generated by various sources for exchange purpose Note 1 to entry: This note applies to the French language on
41、ly. 3.4electro-magnetic transient program EMTP programs that produce time sequence data by analyzing mathematical models of the power system, unlike the devices that record actual power system events Note 1 to entry: Electromagnetic transient simulation programs can provide many different test cases
42、 for a relay, because of the use of the case with which the input conditions of the study can be changed. Note 2 to entry: This note applies to the French language only. 3.5skew time difference between sampling of channels within the sample period of a record for an analog-to-digital converter EXAMP
43、LE: In an eight-channel device with one analog-to-digital (A/D) converter without synchronized sample and heg79g71g3g85g88g81g81g76g81g74g3g68g87g3g68g3g20g3g80g86g3g86g68g80g83g79g72g3g85g68g87g72g15g3g87g75g72g3g191g85g86g87g3g86g68g80g83g79g72g3g90g76g79g79g3g69g72g3g68g87g3g87g75g72g3g87g76g80g7
44、2g3g85g72g83g85g72g86g72g81g87g72g71g3g69g92g3g87g75g72g3timestamp; the sample times for successive channels within each sample period could be up to 125 g80s behind each other. In such cases the skew for successive channels will be 0; 125; 250; 375 g80s.; etc. 3.6time sequence data TSD type of elec
45、tronic data file where each data item in the file corresponds to an instant of time that is identified by an explicit or implicit time tag, such as transient data records, event sequences, and periodic data logs Note 1 to entry: This note applies to the French language only. 4 File and data storage
46、Categories of files 4.1General 4.1.1Files stored on digital devices and media consist of bytes representing a combination of alphabetic, numeric, symbol, punctuation, and other formatting characters. Depending on the format, a byte, part of a byte, or more than one byte, may be represented by a lett
47、er, number, or syg80g69g82g79g3g11g72g17g74g17g15g3g179g36g15g180g3g179g22g15g180g3g82g85g3g179g14g180g12g17g3g55g75g72g85g72g3 g68g85g72g3 g87g75g85g72g72g3g74g72g81g72g85g68g79g3g70g79g68g86g86g72g86g3 g82g73g3g191g79g72g86g3g88g86g72g71g3g82g81g3g70g82g80g83g88g87g72g85g3g86g92g86g87g72g80g86g29g
48、3 g72g91g72g70g88g87g68g69g79g72g3 g191g79g72g86g15g3 g87g72g91g87g3 g191g79g72g86g15g3 g68g81g71g3 g71g68g87g68g3 g191g79g72g86g17g3 g55g75g72g3 g88g86g72g3 g82g73g3 g87g75g72g3 g191g79g72g3 g71g72g87g72g85g80g76g81g72g86g3 g87g75g72g3category. 10 IEC 60255-24:2013 IEEE Std C37.111-2013 Published b
49、y IEC under license from IEEE. 2013 IEEE. All rights reserved. Executable files 4.1.2g40g91g72g70g88g87g68g69g79g72g3 g191g79g72g86g3 g70g82g81g87g68g76g81g3 g68g3 g86g72g84g88g72g81g70g72g3 g82g73g3 g76g81g86g87g85g88g70g87g76g82g81g86g3 g86g88g76table for processing by a computer. Computer prog74g85g68g80g86g3 g68g85g72g3 g86g87g82g85g72g71g3 g68g86g3 g72g91g72g70g88g87g68g69g79g72g3 g191g79g72g86g3 g11g17g40g59g40g12g17g3 g38g50g48g55g53g36g39g40g3 g71g82g72g86g3 g81g82g87g3 g71g72g191g81g72g3g72g91g72g70g88g87g68g69g79g72g3g191g79g72g
