EN 60076-19-2015 en Power transformers - Part 19 Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactors.pdf

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1、BSI Standards PublicationPower transformersPart 19: Rules for the determination ofuncertainties in the measurement of thelosses on power transformers and reactorsPD IEC/TS 60076-19:2013Incorporating Corrigendum April 2013BS EN 60076-19:2015Incorporating corrigendum April 2013BS EN 60076-19:2015 BRIT

2、ISH STANDARDNational forewordThis British Standard is the UK implementation of EN 60076-19:2015.It is derived from IEC/TS 60076-19:2013. It supersedes PD IEC/TS 60076-19:2013 which is withdrawn.The CENELEC common modifications have been implemented at theappropriate places in the text. The start and

3、 finish of each commonmodification is indicated in the text by tags . The UK participation in its preparation was entrusted to TechnicalCommittee PEL/14, Power transformers.A list of organizations represented on this committee can be obtainedon request to its secretary.This publication does not purp

4、ort to include all the necessary provisionsof a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 90072 3ICS 29.180Compliance with a British Standard cannot confer immunity from legal obligations.

5、This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 30 April 2013.Amendments/corrigenda issued since publicationDate Text affected30 April 2013 Cover page title corrected31 January 2016 This corrigendum renumbers PD IEC/TS 60076-19:2013 as BS EN 6

6、0076-19:2015 with agreed common modificationsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 60076-19 August 2015 ICS 29.180 English Version Power transformers - Part 19: Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactors (IEC/TS 600

7、76-19:2013 , modified) Transformateurs de puissance - Partie 19: Rgles pour la dtermination des incertitudes de mesure des pertes des transformateurs de puissance et bobines dinductance (IEC/TS 60076-19:2013 , modifie) Leistungstransformatoren - Teil 19: Regeln fr die Bestimmung von Unsicherheiten i

8、n der Messung der Verluste von Leistungstransformatoren und Drosselspulen (IEC/TS 60076-19:2013 , modifiziert) This European Standard was approved by CENELEC on 2015-06-25. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Eu

9、ropean 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 CEN-CENELEC Management Centre or to any CENELEC member. This European Standard exists in three official v

10、ersions (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 CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical

11、committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovak

12、ia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CENE

13、LEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 60076-19:2015 E 2 BS EN 60076-19:2015EN 60076-19:2015 (E)EN 60076-19:2015 (E)2Foreword This document (EN 60076-19:2015) consists of the text of IEC/TS 60079:2013 prepared by IEC/TC 14 “Pow

14、er transformers“, together with the common modifications prepared by CLC/TC 14 “Power transformers“. The following dates are fixed: latest date by which this document has to beimplementedat national level by publication of an identicalnational standard or by endorsement(dop) 2016-06-25 latest date b

15、y which the national standardsconflicting with this documenthave to be withdrawn(dow) 2018-06-25 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such pate

16、nt rights. This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association. Endorsement notice The text of the International Standard IEC/TS 60079:2013 was approved by CENELEC as a European Standard with agreed common modifications.

17、 2 TS 60076-19 IEC:2013 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope . 7 2 Normative references . 7 3 Terms and definitions . 7 4 Symbols . 8 4.1 General symbols . 8 4.2 Symbols for uncertainty . 9 5 Power measurement, systematic deviation and uncertainty 10 5.1 General . 10 5.2 Model function . 1

18、0 5.3 Measuring systems 10 6 Procedures for no-load loss measurement 11 6.1 General . 11 6.2 Model function for no-load losses at reference conditions 11 6.3 Uncertainty budget for no-load loss . 12 7 Procedures for load loss measurement . 13 7.1 General . 13 7.2 Model function for load loss measure

19、ment at rated current 13 7.3 Reporting to rated current and reference temperature . 14 7.4 Uncertainty budget for the measured power P2reported to rated current 14 7.4.1 General . 14 7.4.2 Uncertainties of measured load loss power P2at ambient temperature 214 7.5 Uncertainty budget for reported load

20、 loss at reference temperature . 15 8 Three-phase calculations 16 8.1 Power measurement 16 8.2 Reference voltage . 17 8.3 Reference current 17 9 Reporting . 17 9.1 Uncertainty declaration 17 9.2 Traceability . 17 10 Estimate of corrections and uncertainty contributions . 18 10.1 Instrument transform

21、ers 18 10.2 Uncertainty contributions of ratio error of instrument transformers . 18 10.3 Uncertainty contribution of phase displacement of instrument transformers . 19 10.3.1 General . 19 10.3.2 Complete reference procedure 19 10.3.3 Class index procedure . 20 10.4 Voltage and current measurements

22、. 21 10.5 Power meter 21 10.6 Correction to sinusoidal waveform . 22 10.7 Winding temperature at load loss measurement 23 10.8 Winding resistance measurement 23 Annex A (informative) Example of load loss uncertainty evaluation for a large power transformer . 25 PD IEC/TS 60076-19:2013BS EN 60076-19:

23、2015TS 60076-19 IEC:2013 3 EN 60076-19:2015 (E)2ForewordThis document (EN 60076-19:2015) consists of the text of IEC/TS 60079:2013 prepared byIEC/TC 14 “Power transformers“, together with the common modifications prepared byCLC/TC 14 “Power transformers“.The following dates are fixed: latest date by

24、 which this document has to beimplemented at national level by publication of an identicalnational standard or by endorsement(dop) 2016-06-25 latest date by which the national standardsconflicting with this documenthave to be withdrawn(dow) 2018-06-25Attention is drawn to the possibility that some o

25、f the elements of this document may be thesubject of patent rights. CENELEC and/or CEN shall not be held responsible for identifyingany or all such patent rights.This document has been prepared under a mandate given to CENELEC by the EuropeanCommission and the European Free Trade Association.Endorse

26、ment noticeThe text of the International Standard IEC/TS 60079:2013 was approved by CENELEC as aEuropean Standard with agreed common modifications.57999101011222233345556666788999992020202121212334557TS 60076-19 IEC:2013 3 Annex B (Informative) Example of load loss uncertainty evaluation for a distr

27、ibutiontransformer . 33 Bibliography 37 Table 1 Measured no-load loss uncertainties . 12 Table 2 Measured load loss uncertainties at ambient temperature . 15 Table 3 Absolute uncertainty of the additional losses at temperature 2. 15 Table 4 Absolute uncertainty of load losses PLLreported at referenc

28、e temperature . 16 Table 5 Procedures for the determination of phase displacement uncertainties 19 Table A.1 Transformer ratings 25 Table A.2 Loss measurement results (one phase) 27 Table A.3 Calibration of voltage and current transformers 27 Table A.4 Uncertainty contributions 29 Table B.1 Transfor

29、mer ratings 33 Table B.2 Measured quantities . 34 Table B.3 Calibration of the current transformers . 35 Table B.4 Uncertainty contribution . 36 PD IEC/TS 60076-19:2013BS EN 60076-19:2015TS 60076-19 IEC:2013 4 3591417171821272929313536378TS 60076-19 IEC:2013 3 Annex B (Informative) Example of load l

30、oss uncertainty evaluation for a distribution transformer . 33 Bibliography 37 Table 1 Measured no-load loss uncertainties . 12 Table 2 Measured load loss uncertainties at ambient temperature . 15 Table 3 Absolute uncertainty of the additional losses at temperature 2. 15 Table 4 Absolute uncertainty

31、 of load losses PLLreported at reference temperature . 16 Table 5 Procedures for the determination of phase displacement uncertainties 19 Table A.1 Transformer ratings 25 Table A.2 Loss measurement results (one phase) 27 Table A.3 Calibration of voltage and current transformers 27 Table A.4 Uncertai

32、nty contributions 29 Table B.1 Transformer ratings 33 Table B.2 Measured quantities . 34 Table B.3 Calibration of the current transformers . 35 Table B.4 Uncertainty contribution . 36 PD IEC/TS 60076-19:2013 4 TS 60076-19 IEC:2013 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ POWER TRANSFORMERS Part 1

33、9: Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactors FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Commit

34、tees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Availab

35、le Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organ

36、izations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical m

37、atters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC Nati

38、onal Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity,

39、IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC its

40、elf does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that

41、they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any natur

42、e whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced

43、publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main tas

44、k of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, o

45、r the subject is still under technical development or where, for any other reason, there is the future but no immediate possibility of an agreement on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed

46、 into International Standards. IEC 60076-19, which is a technical specification, has been prepared by IEC technical committee 14: Power transformers. The text of this technical specification is based on the following documents: PD IEC/TS 60076-19:2013BS EN 60076-19:2015TS 60076-19 IEC:2013 5 TS 6007

47、6-19 IEC:2013 5 Enquiry draft Report on voting 14/726/DTS 14/736A/RVCFull information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

48、 A list of all parts in the IEC 60076 series, published under the general title Power transformers, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.

49、ch“ in the data related to the specific publication. At this date, the publication will be transformed into an International Standard, reconfirmed, withdrawn, replaced by a revised edition, or amended. PD IEC/TS 60076-19:2013BS EN 60076-19:2015TS 60076-19 IEC:2013 6 TS 60076-19 IEC:2013 5 Enquiry draft Report on voting 14/726/DTS 14/736A/RVCFull information on the voting for the approval of this technical specification can be found