IEC 60567-2011 Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolved gases - Guidance《注油电气设备.气体抽样以及游离和溶解气体分析指南》.pdf

《IEC 60567-2011 Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolved gases - Guidance《注油电气设备.气体抽样以及游离和溶解气体分析指南》.pdf》由会员分享，可在线阅读，更多相关《IEC 60567-2011 Oil-filled electrical equipment - Sampling of gases and analysis of free and dissolved gases - Guidance《注油电气设备.气体抽样以及游离和溶解气体分析指南》.pdf（124页珍藏版）》请在麦多课文档分享上搜索。

1、 IEC 60567 Edition 4.0 2011-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Oil-filled electrical equipment Sampling of gases and analysis of free and dissolved gases Guidance Matriels lectriques immergs chantillonnage de gaz et analyse des gaz libres et dissous Lignes directrices IEC60567:2011 THIS

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16、u contactez-nous: Email: csciec.ch Tl.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC 60567 Edition 4.0 2011-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Oil-filled electrical equipment Sampling of gases and analysis of free and dissolved gases Guidance Matriels lectriques immergs chantillonnage de g

17、az et analyse des gaz libres et dissous Lignes directrices INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XA ICS 29.040 PRICE CODE CODE PRIX ISBN 978-2-88912-768-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commissio

18、n Electrotechnique Internationale 2 60567 IEC:2011 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 9 2 Normative references . 9 3 Sampling of gases from gas-collecting (Buchholz) relays 10 3.1 General remarks 10 3.2 Sampling of free gases by syringe . 10 3.2.1 Sampling equipment 10 3.2.2 Sampling p

19、rocedure. 11 3.3 Sampling of free gases by displacement of oil . 12 3.4 Sampling of free gases by vacuum 13 3.5 Sampling of oil from oil filled equipment 14 4 Labelling of gas samples 14 5 Sampling, labelling and transferring of oil from oil-filled equipment . 14 5.1 Sampling and labelling of oil 14

20、 5.2 Transfer of oil for DGA analysis . 14 5.2.1 Transfer from oil syringes 14 5.2.2 Transfer from ampoules . 15 5.2.3 Transfer from flexible metal bottles 15 5.2.4 Transfer from glass and rigid metal bottles 15 6 Preparation of gas-in-oil standards . 15 6.1 General remark . 15 6.2 First method: pre

21、paration of a large volume of gas-in-oil standard . 15 6.2.1 Equipment . 15 6.2.2 Procedure 16 6.2.3 Calculation 18 6.3 Second method: preparation of gas-in-oil standards in a syringe or a vial 18 6.3.1 Equipment . 19 6.3.2 Procedure 20 7 Extraction of gases from oil 20 7.1 General remarks 20 7.2 Mu

22、lti-cycle vacuum extraction using Toepler pump apparatus . 21 7.2.1 Toepler pump extraction apparatus 21 7.2.2 Extraction procedure . 24 7.3 Vacuum extraction by partial degassing method 25 7.3.1 General remark . 25 7.3.2 Partial degassing apparatus 25 7.3.3 Extraction procedure . 26 7.4 Stripping e

23、xtraction method . 26 7.4.1 Stripping apparatus . 26 7.4.2 Outline of procedure 29 7.5 Headspace method . 30 7.5.1 Principle of the method 30 7.5.2 Symbols and abbreviations 30 7.5.3 Headspace extraction apparatus 31 7.5.4 Headspace extraction procedure . 35 60567 IEC:2011 3 7.5.5 Calibration of the

24、 headspace extractor 39 8 Gas analysis by gas-solid chromatography . 41 8.1 General remarks 41 8.2 Outline of suitable methods using Table 4 . 42 8.3 Apparatus 42 8.3.1 Gas chromatograph . 42 8.3.2 Columns 44 8.3.3 Carrier gas 44 8.3.4 Detectors . 44 8.3.5 Methanator 44 8.3.6 Cold trap . 44 8.3.7 In

25、tegrator and recorder 44 8.4 Preparation of apparatus . 45 8.5 Analysis 45 8.6 Calibration of the chromatograph . 45 8.7 Calculations 46 9 Quality control 46 9.1 Verification of the entire analytical system . 46 9.2 Limits of detection and quantification . 47 9.3 Repeatability, reproducibility and a

26、ccuracy 47 9.3.1 General remark . 47 9.3.2 Repeatability . 48 9.3.3 Reproducibility . 48 9.3.4 Accuracy . 48 10 Report of results . 49 Annex A (informative) Correction for incomplete gas extraction in partial degassing method by calculation . 51 Annex B (informative) Mercury-free and shake test vers

27、ions of the standard extraction methods 53 Annex C (informative) Preparation of air-saturated standards 55 Annex D (informative) Correction for gas bubbles in syringes and air gap in rigid bottles 56 Annex E (informative) Procedure for comparing gas monitor readings to laboratory results 57 Bibliogr

28、aphy 58 Figure 1 Sampling of gas by syringe 11 Figure 2 Sampling of free gases by oil displacement 12 Figure 3 Sampling of free gases by vacuum . 13 Figure 4 First method of preparing gas-in-oil standards . 17 Figure 5 Second method for preparing gas-in-oil standards 19 Figure 6 Example of a Toepler

29、 pump extraction apparatus . 23 Figure 7 Types of glass strippers . 27 Figure 8 Stainless steel stripper . 28 Figure 9 Schematic arrangement for connecting an oil stripper to a gas chromatograph 29 Figure 10 Schematic representation of headspace sampler 30 4 60567 IEC:2011 Figure 11 Vial filled with

30、 water . 32 Figure 12 Revolving table 34 Figure 13 Schematic arrangement for gas chromatography 43 Figure B.1 Schematic representation of methods in Annex B . 54 Table 1 Information required for gas samples 14 Table 2 Examples of headspace operating conditions 35 Table 3 Headspace partition coeffici

31、ents at 70 C in mineral insulating oil . 40 Table 4 Examples of gas chromatographic operating conditions . 41 Table 5 Required limits of detection in oil . 47 Table 6 Examples of accuracy of extraction methods . 49 Table A.1 Examples of solubility coefficients ai(at 25 C) reported by CIGRE TF D1.01.

32、15 . 51 Table C.1 Examples of solubility values of air for different oil types . 55 Table C.2 Examples of temperature variations for oxygen and nitrogen solubility in mineral oil . 55 60567 IEC:2011 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ OIL-FILLED ELECTRICAL EQUIPMENT SAMPLING OF GASES AND A

33、NALYSIS OF FREE AND DISSOLVED GASES GUIDANCE FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on al

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43、cation. 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. International Standard IEC 60567 has been prepared by IEC technical committee 10: F

44、luids for electrotechnical applications. This fourth edition cancels and replaces the third edition, published in 2005, and constitutes a technical revision. The main changes with respect to the previous edition are listed below: Since the publication of the third edition, CIGRE TF.D1.01.15 has made

45、 progress in several areas of dissolved gas analysis (DGA), notably a) oil sampling, b) laboratory analysis and solubility coefficients of gases in non-mineral oils, c) calibration of the headspace gas extraction method, 6 60567 IEC:2011 d) more sensitive detectors for chromatography, e) preparation

46、 of air-saturated standards and f) evaluation of gas monitor readings. These advances are included in this fourth edition. Sampling of oil for DGA from oil-filled equipment has been moved from IEC 60567 to IEC 60475 as reflected in the revised title of this standard. The text of this standard is bas

47、ed on the following documents: FDIS Report on voting 10/849/FDIS 10/872/RVD Full information on the voting for the approval of this standard 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. The com

48、mittee 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.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edi

49、tion, or amended. 60567 IEC:2011 7 INTRODUCTION Gases may be formed in oil-filled electrical equipment due to natural ageing but also, to a much greater extent, as a result of faults. Operation with a fault may seriously damage the equipment, and it is valuable to be able to detect the fault at an early stage of development. Where a fault is not severe, the gases formed will