1、BRITISH STANDARD Electrical relays - Part 24: Common format for transient data exchange (COMTRADE) for power systems The European Standard EN 60255-24:2001 has the status of a British Standard ICs 29.120.70 BS EN 60 2 5 5-24: 2 O O 1 IEC 60255-24:2001 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERM
2、ITTED BY COPYRIGHT LAW COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesBS EN 60255-24:2001 Amd. No. National foreword Date Comments This British Standard is the official English language version of EN 60255-24:2001. It is identical with IEC 6
3、0255-24:2001. The UK participation in its preparation was entrusted to Technical Committee PEL95, Measuring relays and protection systems, which has the responsibility to: - - aid enquirers to understand the text; present to the responsible internationalEuropean committee any enquiries on the interp
4、retation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A list of organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications
5、 have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implemen
6、t international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport
7、to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. This British Standard, having been prepared under the direction of the Electr
8、otechnical Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 September 2001 O BSI 08-2001 ISBN O 580 38286 9 Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 53, and a back cover. The
9、 BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication I I COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesEUROPEAN STANDARD NORME EUROPENNE EN 60255-24 EUROPISCHE NORM
10、July 2001 ICs 29.120.70 English version Electrical rela (s Part 24: Common format for transient data exchange (COMTRADE) for power systems (IEC 60255-2412001) Relais lectriques Elektrische Relais Partie 24: Format commun pour lchange de donnes transitoires (CONTRADE) dans les rseaux lectriques 0 Tei
11、l 24: Standardformat fr den Austausch von transienten Daten elektrischer Energieversorgungsnetze (COMTRADE) (CE1 60255-2412001) (IEC 60255-2412001) This European Standard was approved by CENELEC on 2001-0501. CENELEC members are bound to comply with the CENICENELEC Internal Regulations which stipula
12、te the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard
13、exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC mem bers are the national
14、electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen
15、 de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 0 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60255-24:2001 E COPYRIGHT Europe
16、an Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesPage 2 EN 60255-24:2001 Foreword The text of document 95/120/FDIS, future edition 1 of IEC 60255-24, prepared by IEC TC 95, Measuring relays and protection equipment, was submitted to the IEC-CENELEC parallel v
17、ote and was approved by CENELEC as EN 60255-24 on 2001-05-01. The following dates were fixed: - latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement - latest date by which the national standards conflicting with the EN
18、 have to be withdrawn (dop) 2002-02-01 (dow) 2002-02-01 Annexes designated “informative“ are given for information only. In this standard, annexes A to E are informative. Endorsement notice The text of the International Standard IEC 60255-24:2001 was approved by CENELEC as a European Standard withou
19、t any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60027-2 NOTE Harmonized with IEC 60027-2A and IEC 60027-26 as HD 245.2 S1:1983 (not modified). IEC 60027-3 NOTE Harmonized as HD 245.3 S21991 (modified). IEC 600274 NO
20、TE Harmonized as HD 245.4 S1:1987 (modified). IEC 60044-1 NOTE Harmonized as EN 60044-1:1999 (modified). O BSI 08-2001 COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesPage 3 EN 60255-242001 CONTENTS INTRODUCTION 6 1 Scope and object . 7 2 Def
21、initions 7 2.1 data representation . 7 2.2 criticalhon-critical . 8 2.3 primarylsecondary ratios . 8 2.4 floating point notation 8 2.5 categories of files 9 2.6 methods of accessing data in files 10 2.7 data separators, delimiters, field lengths, data minimum and maximum values . 11 Header file (xxx
22、xxxxx.HDR) . 12 Configuration file (xxxxxxxx.CFG) 12 Information file (xxxxxxxx.lNF) . 13 4 Header files 13 3 COMTRADE files 12 a 3.1 3.2 3.3 3.4 Data file (xxxxxxxx.DAT) 12 4.1 Content 13 4.2 Filenames 14 4.3 Format . 14 5 Configuration files . 14 5.2 Filenames 14 5.3 Format . 14 Number and type of
23、 channels . 15 Status (digital) channel information . 17 5.1 Content 14 5.3.1 Station name, identification and revision year . 15 5.3.2 5.3.3 Analog channel information 16 5.3.4 5.3.5 Line frequency . 18 5.3.6 Sampling rate information . 18 5.3.7 Datehime stamps . 19 5.3.8 Data file type 19 5.3.9 Ti
24、me stamp multiplication factor . 20 5.4 Missing data in configuration files . 20 5.5 Configuration file layout 20 6 Data files 20 6.1 Content 21 6.2 Data filenames . 21 6.3 ASCII data file format . 21 6.4 Example of an ASCII data sample 22 6.5 Binary data files . 22 6.6 Example of binary data sample
25、 24 O BSI 08-2001 COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesPage 4 EN 60255-24:2001 a 7 Information files 24 7.1 Content 25 7.2 7.3 Information file filenames . 25 Information file structure 25 7.3.1 Public sections . 26 7.3.2 Private s
26、ections . 26 7.4 File characteristics . 26 7.5 Section headings . 26 Public and private section header name formatting rules . 26 Public section header naming examples . 27 Private section header naming examples 27 7.6.1 Comment lines . 28 7.6.2 Value string 28 Adding, modifying and deleting informa
27、tion . 29 7.7.1 Deleting information . 29 7.7.2 Adding information . 29 Public section header and entry line definitions . 29 Public record information section . 29 7.9.1 Section header definition 29 7.9.2 Public record information entry line definition 30 7.10 Public event information definitions 3
28、1 7.1 0.1 Section heading definition 31 7.10.2 Public event information entry line definition . 31 7.1 1 Public file description section . 32 7.1 1 . 1 Section heading definition 32 7.1 1.2 7.12 Public analog channel section 33 7.1 2.1 7.12.2 Public analog channel entry line definition 33 7.13 Publi
29、c status channel section . 33 7.1 3.1 7.13.2 Public status channel entry line definition . 34 7.14 Sample . INF file . 34 7.5.1 7.5.2 7.5.3 7.6 Entry line . 27 7.7 7.8 7.9 Public file description entry line definition . 32 Section heading definition 33 Section heading definition 34 Annex A (informat
30、ive) Sources and exchange medium for transient data . 36 A.l A.2 A.3 A.4 A.5 Analog simulators 37 A.6 Data exchange medium 37 Digital fault recorders . 36 Analog tape recorders 36 Digital protective relays 36 Transient simulation programs . 36 a O BSI 08-2001 . COPYRIGHT European Committee for Elect
31、rotechnical StandardizationLicensed by Information Handling ServicesPage 5 EN 60255-24:2001 Annex B (informative) Data exchange sampling rates 38 B.l Introduction 38 B.2 Sampling process structure 38 B.3 Interpolation . 41 Annex C (informative) Sample file . 42 Annex D (informative) Sample program f
32、or sampling frequency conversion . 48 Annex E (informative) Sample applications of conversion factors 51 Bibliography 53 Figure 1 . Example of data sample in ASCII format . 22 Figure 2 . Example of data sample in binary format . 24 Figure B.l . Typical signal processing . 38 Figure 8.2 . DSP solutio
33、n 39 Figure 8.3 . Example of sample rate conversion 40 O BSI 08-2001 COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesPage 6 EN 60255-24:2001 I NTRO D U CT I O N This part of IEC 60255 defines a common format for the data files and exchange me
34、dium needed for the interchange 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 data. T
35、his data is 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 standar
36、d is necessary to facilitate the exchange of such data between applications. This facilitates the use of proprietary data in diverse applications and allows users of one proprietary system to use digital data from other systems. O O BSI 08-2001 COPYRIGHT European Committee for Electrotechnical Stand
37、ardizationLicensed by Information Handling ServicesPage 7 EN 60255-24:2001 ELECTRICAL RELAYS - Part 24: Common format for transient data exchange (COMTRADE) for power systems 1 Scope and object This part of IEC 60255 defines a format for files containing transient waveform and event data collected f
38、rom power systems or power system models. This standard applies to files stored on physical media such as digital hard drives and diskettes. It is not a standard for transferring data files over communication networks. The format is intended to provide an easily interpretable format for use in excha
39、nging data; as such, it does not make use of the economies available from data encoding and compression which proprietary formats depend on for competitive advantage. 2 Definitions For the purpose of this part of IEC 60255, the following definitions apply. 2.1 data representations data stored in fil
40、es as a series of binary bits NOTE Each bit can be either a 1 or a O. The bits are organized in groups of 8 bits called bytes. When a computer reads the data in a file, it reads the data as a series of bytes. 2.1 .I binary data data organized in the form of bytes NOTE The 8 bits in a byte can be org
41、anized in 256 different combinations. They can be used, therefore, to represent the numbers from O to 255. If larger numbers are needed, several bytes can be used to represent a single number, e.g., 2 bytes (16 bits) can represent the numbers from O to 65535. When the bytes are interpreted in this f
42、ashion, they are known as binary data. Several different formats are in common use for storage of numeric data in binary form. 2.1.2 ASCII (American National Standard Code for Information Interchange) data symbols that match 127 of the combinations of eight binary bits NOTE As an alternative to a by
43、te representing the numbers O to 255, it can be used to represent 255 different symbols. The American National Standard Code for Information Interchange (ASCII) is a standard that lists symbols that match 127 of the combinations of eight binary bits, e.g. the byte 01000001 represents an upper case “
44、A while 01100001 represents a lower case “a”. With 127 different combinations, it is possible to represent all of the keys on the keyboard plus many other special symbols. The remainder of the 256 combinations available from an 8-bit format are used for drawing and other special application characte
45、rs. To represent a number in ASCII format requires one byte for each digit of the number. O BSI 08-2001 COPYRIGHT European Committee for Electrotechnical StandardizationLicensed by Information Handling ServicesPage 8 EN 60255-24:2001 2.2 criticallnon-critical some of the data in the configuration fi
46、le is not absolutely necessary for the reproduction of the sample data, and some variables provided for in the configuration file may not be relevant to a particular application. Such data may be described as non-critical and may be omitted. An example of such non-critical data is the recording devi
47、ce channel name. However, the position normally occupied by such variables must be maintained in order to maintain the integrity of the file. If data is described as non-critical in any section of the standard, the position may be left empty or filled, using the space character, and the correspondin
48、g data separator following the preceding data separator applied with no intervening characters or spaces. Any data which is necessary for the reproduction of the sample data is termed critical. If such data is missing, the file may be unusable. 2.3 primarylsecondary ratios the devices used to measur
49、e and record events on a high voltage system are not capable of directly accepting the high voltage and high currents of the power system. These devices are built to accept inputs in more manageable and less dangerous levels, termed secondary quantities. Voltage transformers and current transformers are used to reduce the voltage and current signals on the power system to these lower values. The transformer ratios are chosen so that when the power system is running at the rated or nominal primary value, the secondary value is at the nominal secondary value. The ratio is specifi
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