IEC_TR_61850-90-12-2020.pdf

IEC TR 61850-90-12 Edition 2.0 2020-07 TECHNICAL REPORT Communication networks and systems for power utility automation Part 90-12:Wide area network engineering guidelines IEC TR 61850-90-12:2020-07(en)colourinside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2020 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 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 member National Committee for further information.IEC Central Office Tel.:+41 22 919 02 11 3,rue de Varemb infoiec.ch CH-1211 Geneva 20 www.iec.ch Switzerland About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,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 corrigendum or an amendment might have been published.IEC publications search-webstore.iec.ch/advsearchform The advanced search enables 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by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdrawn publications.IEC Just Published-webstore.iec.ch/justpublished Stay up to date on all new IEC publications.Just Published details all new publications released.Available online and once a month by email.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:salesiec.ch.Electropedia-www.electropedia.org The worlds leading online dictionary on electrotechnology,containing more than 22 000 terminological entries in English and French,with equivalent terms in 16 additional languages.Also known as the International Electrotechnical Vocabulary(IEV)online.IEC Glossary-std.iec.ch/glossary 67 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC TR 61850-90-12 Edition 2.0 2020-07 TECHNICAL REPORT Communication networks and systems for power utility automation Part 90-12:Wide area network engineering guidelines INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.200 ISBN 978-2-8322-8657-9 Registered trademark of the International Electrotechnical Commission Warning!Make sure that you obtained this publication from an authorized distributor.colourinside 2 IEC TR 61850-90-12:2020 IEC 2020 CONTENTS FOREWORD.12 INTRODUCTION.14 1 Scope.16 2 Normative references.16 3 Terms,definitions,abbreviated terms,acronyms,and symbols.21 3.1 Terms and definitions.21 3.2 Abbreviated terms and acronyms.25 3.3 Network diagram symbols.34 4 Wide area communication in electrical utilities.36 4.1 Executive summary.36 4.2 Network and application example:ENDESA,Andalusia(Spain).38 4.3 Typical interface between a substation and the WAN.40 4.4 WAN characteristics and actors.41 4.5 Smart Grid Architecture Model(SGAM)Mapping.42 4.6 Network elements and voltage level.44 4.7 WAN interfaces in substation automation(IEC 61850-5).45 4.8 Logical interfaces and protocols in the architecture in IEC TR 62357-200.46 4.9 Network traffic and ownership.47 5 WAN metrics.48 5.1 Traffic types.48 5.2 Quality of Service(QoS)of TDM and PSN.48 5.3 Latency calculation.48 5.3.1 Latency components.48 5.3.2 Propagation delay.49 5.3.3 Residence delay.49 5.3.4 Latency accumulation.49 5.3.5 Example:latency of a microwave system.49 5.3.6 Latency and determinism.50 5.3.7 Latency classes in IEC 61850-5.50 5.4 Jitter.52 5.4.1 Jitter definition.52 5.4.2 Jitter classes in IEC 61850.53 5.5 Latency symmetry and path congruency.53 5.6 Medium asymmetry.53 5.7 Communication speed symmetry.54 5.8 Recovery delay.54 5.9 Time accuracy.54 5.9.1 Time accuracy definition.54 5.9.2 Time accuracy classes.55 5.10 Tolerance against failures.56 5.10.1 Failure.56 5.10.2 Reliability.57 5.10.3 Redundancy principles.57 5.10.4 Redundancy and reliability.58 5.10.5 Redundancy checking.59 5.10.6 Redundant layout:single point of failure.59 IEC TR 61850-90-12:2020 IEC 2020 3 5.10.7 Redundant layout:cross-redundancy.60 5.10.8 Maintainability.61 5.10.9 Availability.61 5.10.10 Integrity.63 5.10.11 Dependability.64 5.10.12 Example:Dependability of GOOSE transmission.64 6 Use cases and WAN communication requirements.65 6.1 List of generic use cases.65 6.2 Teleprotection(IF2&IF11).66 6.2.1 Teleprotection schemes.66 6.2.2 Teleprotection data kinds.66 6.2.3 Curren