IEC 62271-211-2014 High-voltage switchgear and controlgear - Part 211 Direct connection between power transformers and gas-insulated metal-enclosed switchgear f.pdf

1、 IEC 62271-211 Edition 1.0 2014-04 INTERNATIONAL STANDARD NORME INTERNATIONALE High-voltage switchgear and controlgear Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV Appareillage haute tension Partie 211: Raccordement

2、s directs entre transformateurs de puissance et appareillage sous enveloppe mtallique isolation gazeuse de tensions assignes suprieures 52 kV IEC 62271-211:2014-04(en-fr) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified,

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20、71-211 Edition 1.0 2014-04 INTERNATIONAL STANDARD NORME INTERNATIONALE High-voltage switchgear and controlgear Part 211: Direct connection between power transformers and gas-insulated metal-enclosed switchgear for rated voltages above 52 kV Appareillage haute tension Partie 211: Raccordements direct

21、s entre transformateurs de puissance et appareillage sous enveloppe mtallique isolation gazeuse de tensions assignes suprieures 52 kV INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE S ICS 29.130.10 PRICE CODE CODE PRIX ISBN 978-2-8322-1534-0 Registered trademark

22、of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique 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. 2 IEC

23、62271-211:2014 IEC 2014 CONTENTS FOREWORD . 4 1 General . 6 1.1 Scope 6 1.2 Normative references . 6 2 Normal and special service conditions . 7 2.1 Normal service conditions 7 2.2 Special service conditions 7 3 Terms and definitions 7 4 Rating 8 4.1 Rated voltage (U r ) . 8 4.2 Rated insulation lev

24、el . 8 4.3 Rated frequency (f r ) . 9 4.4 Rated continuous current (I r ) and temperature rise 9 4.5 Rated short-time withstand current (I k ) and rated thermal short-time current (I th ) . 9 4.6 Rated peak withstand current (I p ) and rated dynamic current (I d ) 9 4.7 Rated duration of short-circu

25、it (t k ) and rated duration (t th ) . 9 4.8 Rated filling pressure p reof gas for insulation 9 5 Design and construction 10 5.1 Limits of supply 10 5.2 Pressure withstand requirements . 11 5.3 Gas and vacuum tightness . 11 5.4 Mechanical forces applied on the connection interface . 12 5.5 Mechanica

26、l forces applied on the bushing flange . 12 5.6 Horizontal and vertical displacement 13 5.7 Vibrations 13 6 Type tests . 14 6.1 General 14 6.2 Dielectric tests . 14 Dielectric tests of bushing . 14 6.2.1Dielectric tests of transformer connection in a single phase 6.2.2 enclosure 14 Dielectric tests

27、of transformer connection in a three phase 6.2.3 enclosure 14 6.3 Cantilever load withstand tests. 14 6.4 Gas tightness tests 15 7 Routine tests . 15 7.1 General 15 7.2 External pressure test of the bushing . 15 7.3 Tightness tests 15 8 Standard dimensions and tolerances . 15 8.1 Single-phase direct

28、 connection between oil-filled transformer and switchgear . 15 8.2 Three-phase direct connection between oil-filled transformer and switchgear . 15 8.3 Connection between gas-insulated transformer and switchgear . 16 IEC 62271-211:2014 IEC 2014 3 8.4 Transformer tolerances 16 8.5 Mounting of the tra

29、nsformer on its foundation 16 9 Information to be given with enquiries, tenders and orders 16 10 Transport, storage, erection, operation and maintenance 16 Bibliography 21 Figure 1 Typical direct connection between power transformer and gas-insulated metal-enclosed switchgear 17 Figure 2 Standard di

30、mensions for typical direct connection between power transformer and gas-insulated metal-enclosed switchgear 18 Figure 3 Transformer tolerances for a typical direct connection shown on the example of a three-phase power transformer connected to a single-phase gas- insulated metal-enclosed switchgear

31、 . 19 Figure 4 Transformer tolerances for a typical direct connection shown on the example of a three-phase power transformer connected to a three-phase gas-insulated metal-enclosed switchgear up to 170 kV . 20 Table 1 Moment and forces applied on the bushing flange and transformer . 13 4 IEC 62271-

32、211:2014 IEC 2014 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 211: Direct connection between power transformers and gas- insulated metal-enclosed switchgear for rated voltages above 52 kV FOREWORD 1) The International Electrotechnical Commission (IEC) is

33、a worldwide organization for standardization comprising all national electrotechnical 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 o

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42、 IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. 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 s

43、ubject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 62271-211 has been prepared by subcommittee 17C: High-voltage switchgear and controlgear assemblies, of IEC technical committee 17: Switchgear and controlgear. This fi

44、rst edition cancels and replaces the first edition of IEC/TR 61639:1996 and constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) transfer from technical report to international standard; b) the minimum voltage ra

45、ting was changed from 72,5 kV to above 52 kV; c) update of normative references; d) definition of insulated junction including limit of supply; IEC 62271-211:2014 IEC 2014 5 e) definition of dielectric test of gas-insulated metal-enclosed switchgear for transformer connection in a three phase enclos

46、ure; f) addition of interface tolerances at transformer side; g) addition of transformer tolerances in service; h) addition of exceptional loads for bushings and flanges; i) consideration of oil- and gas-insulated transformers; j) inclusion of three-phase enclosed direct connections. The text of thi

47、s standard is based on the following documents: FDIS Report on voting 17C/596/FDIS 17C/600/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 Directiv

48、es, Part 2. A list of all parts in the IEC 62271 series, published under the general title High-voltage switchgear and controlgear, 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

49、 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. 6 IEC 62271-211:2014 IEC 2014 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR Part 211: Direct connection between power transformers and gas- insulated metal-enclosed switchgear for rated voltages above 52 kV 1 General 1.1 Scope This part