1、 IEC 61181 Edition 2.1 2012-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Mineral oil-filled electrical equipment Application of dissolved gas analysis (DGA) to factory tests on electrical equipment Matriels lectriques imprgns dhuile minrale Application de lanalyse des gaz dissous (AGD) lors dessai
2、s en usine de matriels lectriques IEC61181:2007+A1:2012 colourinsideTHIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or me
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16、 csciec.ch. IEC 61181 Edition 2.1 2012-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Mineral oil-filled electrical equipment Application of dissolved gas analysis (DGA) to factory tests on electrical equipment Matriels lectriques imprgns dhuile minrale Application de lanalyse des gaz dissous (AGD)
17、lors dessais en usine de matriels lectriques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE CD ICS 29.040 PRICE CODE CODE PRIX ISBN 978-2-88912-012-3 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechn
18、ique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colourinside 2 61181 IEC:2007+A1:2012 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normat
19、ive references . 6 3 General caution, health, safety and environmental protection . 6 4 Oil sampling . 7 4.1 General . 7 4.2 Sample containers . 7 4.3 Sampling location 7 4.4 Sampling frequency . 7 4.5 Sample labelling 8 4.6 Sample storage . 8 4.7 Disposal of waste oil . 8 5 Factors affecting gassin
20、g rate during thermal tests . 8 6 Dissolved gas extraction and analysis 9 7 Report 10 Annex A (informative) Gas formation rates during thermal tests on power transformers . 11 Annex B (informative) Gas formation rates during chopped-lightning impulse tests on instrument transformers 6 . 13 Bibliogra
21、phy 14 Table 1 Required detection limits for factory tests 9 Table A.1 Ranges of 90 % typical rates of gas formation in modern, mineral oil- filled power transformers during thermal tests, in l/l/h 11 Table A.2 Survey of cases followed by problems in core-type, mineral oil- filled power transformers
22、, for various rates of gas formation observed during the thermal tests, (values in l/l/h). 12 Table B.1 90 % typical gas concentration increases observed between the beginning and the end of chopped lightning-impulse tests on instrument transformers 13 61181 IEC:2007+A1:2012 3 INTERNATIONAL ELECTROT
23、ECHNICAL COMMISSION _ MINERAL OIL-FILLED ELECTRICAL EQUIPMENT APPLICATION OF DISSOLVED GAS ANALYSIS (DGA) TO FACTORY TESTS ON ELECTRICAL EQUIPMENT FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical
24、committees (IEC National Committees). 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, Tech
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26、ntal and non-governmental organizations 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 a
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28、se and are accepted by IEC National 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 pro
29、mote international uniformity, 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 indi
30、cated in the latter. 5) IEC itself 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
31、) All users should ensure that 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 dama
32、ge or other damage of any nature 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 publ
33、ication. Use of the referenced 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 s
34、uch patent rights. This consolidated version of IEC 61181 consists of the second edition (2007) documents 10/675/FDIS and 10/688/RVD and its amendment 1 (2012) documents 10/881/FDIS and 10/886/RVD. It bears the edition number 2.1. The technical content is therefore identical to the base edition and
35、its amendment and has been prepared for user convenience. A vertical line in the margin shows where the base publication has been modified by amendment 1. Additions and deletions are displayed in red, with deletions being struck through. 4 61181 IEC:2007+A1:2012 International Standard IEC 61181 has
36、been prepared by IEC technical committee 10: Fluids for electrotechnical applications. This edition includes the following significant technical changes with respect to the previous edition: a) the specific procedures used during factory tests (sampling location, sampling frequency, gas extraction a
37、nd chromatographic analysis in the laboratory) are described in more detail; b) information is provided in Annex A concerning the residual gas contents recommended before thermal tests on power transformers, typical gas values observed during the tests and cases where gas formation during the tests
38、was followed by problems in the transformers; c) typical values observed during chopped lightning-impulse tests on instrument transformers are indicated in Annex B. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of the
39、 base publication and its amendments will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IM
40、PORTANT The “colour inside” logo on the cover page of this publication indicates that it contains colours which are considered to be useful for the correct understanding of its contents. Users should therefore print this publication using a colour printer. 61181 IEC:2007+A1:2012 5 INTRODUCTION IEC t
41、echnical committee 10, responsible for IEC 61181, has prepared guidelines for performing DGA measurements during factory testing on equipment filled with mineral insulating oil in order to ensure consistency in the industry and improve the confidence with which the results will be used. DGA is used
42、routinely as a standard quality control procedure during and after factory tests on electrical equipment, for example during temperature-rise and chopped lightning-impulse tests, to indicate that a design meets specified requirements. Due to the small quantities of gases generated during factory tes
43、ts, specific requirements are necessary for the sampling and analysis of oil samples and the interpretation of results. Acceptance criteria are beyond the scope of TC 10. Attention is drawn, however, to the fact that the guidelines issued by CIGRE in 1993-1995 11do not apply any more to transformers
44、 manufactured today, the design of which having been improved. Examples of values actually observed today are indicated in Annexes A and B. 1Figures in square brackets refer to the bibliography. 6 61181 IEC:2007+A1:2012 MINERAL OIL-FILLED ELECTRICAL EQUIPMENT APPLICATION OF DISSOLVED GAS ANALYSIS (D
45、GA) TO FACTORY TESTS ON ELECTRICAL EQUIPMENT 1 Scope This International Standard specifies oil-sampling procedures, analysis requirements and procedures, and recommends sensitivity, repeatability and accuracy criteria for the application of dissolved gas analysis (DGA) to factory testing of new powe
46、r transformers, reactors and instrument transformers filled with mineral insulating oil when DGA testing has been specified. The most effective and useful application of DGA techniques to factory testing is during the performance of long-term tests, typically temperature-rise (heat run) and overload
47、ing tests on power transformers and reactors, also impulse tests on instrument transformers. DGA may also be valuable for over-excitation tests run over an extended period of time. Experience with DGA results, before and after short-time dielectric tests, indicates that DGA is normally less sensitiv
48、e than electrical and acoustic methods for detecting partial discharges. However, DGA will indicate when these partial discharges become harmful to the insulation and may be detected by inspection 2. 2 Normative references The following referenced document is indispensable for the application of thi
49、s document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60567: Guide for the sampling of gases and of oil from oil-filled electrical equipment and for the analysis of free and dissolved gases IEC 60475:2011, Method of sampling insulating liquids IEC 60567:2011, Oil-filled electrical equipment
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