1、 IEC 60071-5 Edition 1.0 2014-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Insulation co-ordination Part 5: Procedures for high-voltage direct current (HVDC) converter stations Coordination de lisolement Partie 5: Procdures pour les stations de conversion courant continu haute tension (CCHT) IEC 6
2、0071-5:2014-10(en-fr) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 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 mechanical, including photocopying
3、 and microfilm, without permission in writing from either IEC or IECs member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC
4、member National Committee for further information. Droits de reproduction rservs. Sauf indication contraire, aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, san
5、s laccord crit de lIEC ou du Comit national de lIEC du pays du demandeur. Si vous avez des questions sur le copyright de lIEC ou si vous dsirez obtenir des droits supplmentaires sur cette publication, utilisez les coordonnes ci-aprs ou contactez le Comit national de lIEC de votre pays de rsidence. I
6、EC Central Office Tel.: +41 22 919 02 11 3, rue de Varemb Fax: +41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electri
7、cal, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. IEC Catalogue - webstore.iec.ch/catalogue Th
8、e stand-alone application for consulting the entire bibliographical information on IEC International Standards, Technical Specifications, Technical Reports and other documents. Available for PC, Mac OS, Android Tablets and iPad. IEC publications search - www.iec.ch/searchpub The advanced search enab
9、les to find IEC publications by a variety of criteria (reference number, text, technical committee,). It also gives information on projects, replaced and withdrawn publications. IEC Just Published - webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just Published details all
10、 new publications released. Available online and also once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French, with equivalent terms in 14 additional lan
11、guages. Also known as the International Electrotechnical Vocabulary (IEV) online. IEC Glossary - std.iec.ch/glossary More than 55 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002. Some entries have be
12、en collected from earlier publications of IEC TC 37, 77, 86 and CISPR. IEC Customer Service Centre - webstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. A propos de lIEC La Commission Electrot
13、echnique Internationale (IEC) est la premire organisation mondiale qui labore et publie des Normes internationales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A propos des publications IEC Le contenu technique des publications IEC est constamment revu. Veuillez
14、vous assurer que vous possdez ldition la plus rcente, un corrigendum ou amendement peut avoir t publi. Catalogue IEC - webstore.iec.ch/catalogue Application autonome pour consulter tous les renseignements bibliographiques sur les Normes internationales, Spcifications techniques, Rapports techniques
15、et autres documents de lIEC. Disponible pour PC, Mac OS, tablettes Android et iPad. Recherche de publications IEC - www.iec.ch/searchpub La recherche avance permet de trouver des publications IEC en utilisant diffrents critres (numro de rfrence, texte, comit dtudes,). Elle donne aussi des informatio
16、ns sur les projets et les publications remplaces ou retires. IEC Just Published - webstore.iec.ch/justpublished Restez inform sur les nouvelles publications IEC. Just Published dtaille les nouvelles publications parues. Disponible en ligne et aussi une fois par mois par email. Electropedia - www.ele
17、ctropedia.org Le premier dictionnaire en ligne de termes lectroniques et lectriques. Il contient plus de 30 000 termes et dfinitions en anglais et en franais, ainsi que les termes quivalents dans 14 langues additionnelles. Egalement appel Vocabulaire Electrotechnique International (IEV) en ligne. Gl
18、ossaire IEC - std.iec.ch/glossary Plus de 55 000 entres terminologiques lectrotechniques, en anglais et en franais, extraites des articles Termes et Dfinitions des publications IEC parues depuis 2002. Plus certaines entres antrieures extraites des publications des CE 37, 77, 86 et CISPR de lIEC. Ser
19、vice Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60071-5 Edition 1.0 2014-10 INTERNATIONAL STANDARD NORME INTERNATIONALE Insulation co-ordination Part 5: Procedures for high-voltage direc
20、t current (HVDC) converter stations Coordination de lisolement Partie 5: Procdures pour les stations de conversion courant continu haute tension (CCHT) INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XD ICS 29.080.30 PRICE CODE CODE PRIX ISBN 978-2-8322-1887-7 Re
21、gistered trademark 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 distr
22、ibuteur agr. colour inside 2 IEC 60071-5:2014 IEC 2014 CONTENTS FOREWORD . 6 INTRODUCTION . 8 1 General . 9 1.1 Scope . 9 1.2 Additional background . 9 2 Normative references . 10 3 Terms and definitions. 10 4 Symbols and abbreviations 16 4.1 General . 16 4.2 Subscripts . 16 4.3 Letter symbols . 16
23、4.4 Abbreviations 17 5 Typical HVDC converter station schemes . 17 6 Principles of insulation co-ordination 21 6.1 General . 21 6.2 Essential differences between a.c. and d.c. systems 21 6.3 Insulation co-ordination procedure . 21 6.4 Comparison of withstand voltage selection in a.c. and d.c. system
24、s . 22 7 Voltages and overvoltages in service 24 7.1 Continuous operating voltages at various locations in the converter station 24 7.2 Peak continuous operating voltage (PCOV) and crest continuous operating voltage (CCOV) . 28 7.3 Sources and types of overvoltages 30 7.4 Temporary overvoltages 31 7
25、.4.1 General . 31 7.4.2 Temporary overvoltages on the a.c. side 31 7.4.3 Temporary overvoltages on the d.c. side 31 7.5 Slow-front overvoltages . 31 7.5.1 General . 31 7.5.2 Slow-front overvoltages on the a.c. side . 31 7.5.3 Slow-front overvoltages on the d.c. side . 32 7.6 Fast-front, very-fast-fr
26、ont and steep-front overvoltages 33 8 Arrester characteristics and stresses 34 8.1 Arrester characteristics . 34 8.2 Arrester specification. 35 8.3 Arrester stresses . 35 8.3.1 General . 35 8.3.2 AC bus arrester (A) 36 8.3.3 AC filter arrester (FA) . 37 8.3.4 Transformer valve winding arresters (T)
27、. 37 8.3.5 Valve arrester (V) . 37 8.3.6 Bridge arrester (B) . 40 8.3.7 Converter unit arrester (C) . 41 8.3.8 Mid-point d.c. bus arrester (M) . 41 8.3.9 Converter unit d.c. bus arrester (CB) 42 8.3.10 DC bus and d.c. line/cable arrester (DB and DL/DC) . 42 IEC 60071-5:2014 IEC 2014 3 8.3.11 Neutral
28、 bus arrester (E, EL, EM in Figure 3, EB, E1, EL, EM in Figure 1) 42 8.3.12 DC reactor arrester (DR) 43 8.3.13 DC filter arrester (FD) 44 8.3.14 Earth electrode station arrester 44 8.4 Protection strategy 44 8.4.1 General . 44 8.4.2 Insulation directly protected by a single arrester . 44 8.4.3 Insul
29、ation protected by more than one arrester in series . 45 8.4.4 Valve side neutral point of transformers . 45 8.4.5 Insulation between phase conductors of the converter transformer . 45 8.4.6 Summary of protection strategy 45 8.5 Summary of events and stresses . 47 9 Design procedure of insulation co
30、-ordination 49 9.1 General . 49 9.2 Arrester requirements 49 9.3 Characteristics of insulation. 51 9.4 Representative overvoltages (U rp ) . 51 9.5 Determination of the co-ordination withstand voltages (U cw ) 52 9.6 Determination of the required withstand voltages (U rw ) 52 9.7 Determination of th
31、e specified withstand voltage (U w ) . 54 10 Study tools and system modelling 54 10.1 General . 54 10.2 Study approach and tools 54 10.3 System details . 55 10.3.1 Modelling and system representation 55 10.3.2 AC network and a.c. side of the HVDC converter station . 57 10.3.3 DC overhead line/cable
32、and earth electrode line details 58 10.3.4 DC side of an HVDC converter station details . 58 11 Creepage distances . 59 11.1 General . 59 11.2 Base voltage for creepage distance . 59 11.3 Creepage distance for outdoor insulation under d.c. voltage 59 11.4 Creepage distance for indoor insulation unde
33、r d.c. or mixed voltage 60 11.5 Creepage distance of a.c. insulators 60 12 Clearances in air 60 Annex A (informative) Example of insulation co-ordination for conventional HVDC converters . 62 A.1 General . 62 A.2 Arrester protective scheme 62 A.3 Arrester stresses, protection and insulation levels 6
34、2 A.3.1 General . 62 A.3.2 Slow-front overvoltages transferred from the a.c. side 63 A.3.3 Earth fault between valve and upper bridge transformer bushing 63 A.4 Transformer valve side withstand voltages . 66 A.4.1 Phase-to-phase . 66 A.4.2 Upper bridge transformer phase-to-earth (star). 67 A.4.3 Low
35、er bridge transformer phase-to-earth (delta) . 67 A.5 Air-insulated smoothing reactors withstand voltages 67 A.5.1 Terminal-to-terminal slow-front overvoltages 67 4 IEC 60071-5:2014 IEC 2014 A.5.2 Terminal-to-earth . 68 A.6 Results . 68 Annex B (informative) Example of insulation co-ordination for c
36、apacitor commutated converters (CCC) and controlled series capacitor converters (CSCC) . 72 B.1 General . 72 B.2 Arrester protective scheme 72 B.3 Arrester stresses, protection and insulation levels 72 B.3.1 General . 72 B.3.2 Transferred slow-front overvoltages from the a.c. side 73 B.3.3 Earth fau
37、lt between valve and upper bridge transformer bushing 74 B.4 Transformer valve side withstand voltages . 77 B.4.1 Phase-to-phase . 77 B.4.2 Upper bridge transformer phase-to-earth (star). 77 B.4.3 Lower bridge transformer phase-to-earth (delta) . 77 B.5 Air-insulated smoothing reactors withstand vol
38、tages 78 B.5.1 Slow-front terminal-to-terminal overvoltages . 78 B.5.2 Terminal-to-earth . 78 B.6 Results . 79 Annex C (informative) Considerations for insulation co-ordination of some special converter configurations 87 C.1 Procedure for insulation co-ordination of back-to-back type of HVDC links .
39、 87 C.2 Procedure for insulation co-ordination of parallel valve groups . 87 C.2.1 General . 87 C.2.2 AC bus arrester (A) 88 C.2.3 AC filter arrester (FA) . 88 C.2.4 Valve arrester (V) . 88 C.2.5 Bridge arrester (B) and converter unit arrester (C) 88 C.2.6 Mid-point arrester (M) 88 C.2.7 Converter u
40、nit d.c. bus arrester (CB) 88 C.2.8 DC bus and d.c. line/cable arrester (DB and DL) 89 C.2.9 Neutral bus arrester (E) . 89 C.2.10 DC reactor arrester (DR) 89 C.2.11 DC filter arrester (FD) 89 C.2.12 New converter stations with parallel valve groups . 89 C.3 Procedure for insulation co-ordination of
41、upgrading existing systems with series-connected valve groups 89 C.3.1 General . 89 C.3.2 AC bus arrester (A) 90 C.3.3 AC filter arrester (FA) . 90 C.3.4 Valve arrester (V) . 90 C.3.5 Bridge arrester (B) and converter unit arrester (C) 90 C.3.6 Mid-point arrester (M) 90 C.3.7 Converter unit d.c. bus
42、 arrester (CB), d.c. bus and d.c. line/cable arrester (DB and DL) 91 C.3.8 Neutral bus arrester (E) . 91 C.3.9 DC reactor arrester (DR) 91 C.3.10 DC filter arrester (FD) 91 C.4 Overvoltages in the a.c. network due to closely coupled HVDC links 91 C.5 Effect of gas-insulated switchgear on insulation
43、co-ordination of HVDC converter stations 92 IEC 60071-5:2014 IEC 2014 5 Annex D (informative) Typical arrester characteristics 93 Bibliography 94 Figure 1 Possible arrester locations in a pole with two 12-pulse converters in series . 19 Figure 2 Possible arrester locations for a back-to-back convert
44、er station 20 Figure 3 HVDC converter station with one 12-pulse converter bridge per pole . 25 Figure 4 Continuous operating voltages at various locations (location identification according to Figure 3) . 27 Figure 5 Operating voltage of a valve arrester (V), rectifier operation 29 Figure 6 Operatin
45、g voltage of a mid-point arrester (M), rectifier operation . 29 Figure 7 Operating voltage of a converter bus arrester (CB), rectifier operation . 30 Figure 8 One pole of an HVDC converter station . 57 Figure A.1 AC and d.c. arresters 69 Figure A.2 Valve arrester stresses for slow-front overvoltages
46、 from a.c. side 69 Figure A.3 Arrester V2 stress for slow-front overvoltage from a.c. side 70 Figure A.4 Valve arrester stresses for earth fault between valve and upper bridge transformer bushing 70 Figure A.5 Arrester V1 stress for earth fault between valve and upper bridge transformer bushing 71 F
47、igure B.1 AC and d.c. arresters for CCC and CSCC converters . 80 Figure B.2 Valve arrester stresses for slow-front overvoltages from a.c. side 81 Figure B.3 Arrester V2 stress for slow-front overvoltage from a.c. side 82 Figure B.4 Valve arrester stresses for earth fault between valve and upper brid
48、ge transformer bushing 84 Figure B.5 Arrester V1 stress for earth fault between valve and upper bridge transformer bushing 85 Figure B.6 Stresses on capacitor arresters C ccand C scduring earth fault between valve and upper bridge transformer bushing 86 Figure C.1 Expanded HVDC converter with parall
49、el valve groups 88 Figure C.2 Upgraded HVDC converter with series valve group 90 Figure D.1 Typical arrester V-I characteristics 93 Table 1 Classes and shapes of overvoltages, standard voltage shapes and standard withstand voltage tests 11 Table 2 Symbol description. 20 Table 3 Comparison of the selection of withstand voltages for a.c. equipment with that for HVDC converter station equipment 23 Table 4 Arrester pro
