IEC TR 61850-90-2:2016

IEC TR 61850-90-2 ®
Edition 1.0 2016-02
TECHNICAL
REPORT
colour
inside
Communication networks and systems for power utility automation –
Part 90-2: Using IEC 61850 for communication between substations and control
centres
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 IEC's 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 Varembé Fax: +41 22 919 03 00
CH-1211 Geneva 20 info@iec.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 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 corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
The stand-alone application for consulting the entire The world's leading online dictionary of electronic and
bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

IEC publications search - www.iec.ch/searchpub IEC Glossary - std.iec.ch/glossary
The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

CISPR.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Customer Service Centre - webstore.iec.ch/csc
details all new publications released. Available online and If you wish to give us your feedback on this publication or
also once a month by email. need further assistance, please contact the Customer Service
Centre: csc@iec.ch.
IEC TR 61850-90-2 ®
Edition 1.0 2016-02
TECHNICAL
REPORT
colour
inside
Communication networks and systems for power utility automation –

Part 90-2: Using IEC 61850 for communication between substations and control

centres
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-3187-6

– 2 – IEC TR 61850-90-2:2016  IEC 2016
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references. 11
3 Terms and definitions . 13
4 Abbreviated terms . 14
5 Use cases and requirements . 15
5.1 Use cases . 15
5.1.1 Overview . 15
5.1.2 Actors . 15
5.1.3 Use case diagram . 16
5.1.4 Use cases . 17
5.2 Telecontrol . 17
5.2.1 General . 17
5.2.2 Constraints / assumptions / design considerations . 18
5.2.3 Actors . 18
5.2.4 Use cases diagram . 19
5.2.5 Use case description . 20
5.2.6 Sequence diagrams . 20
5.3 Synchrophasor . 26
5.3.1 General . 26
5.3.2 Constraints / assumptions / design considerations . 26
5.3.3 Use cases . 26
5.4 Disturbance . 26
5.4.1 General . 26
5.4.2 Constraints / assumptions / design considerations . 26
5.4.3 Actors . 26
5.4.4 Use case diagram . 27
5.4.5 Uses cases description . 28
5.4.6 Sequence diagrams . 28
5.5 Counting . 29
5.5.1 General . 29
5.5.2 Constraints / assumptions / design considerations . 29
5.5.3 Actors . 30
5.5.4 Use cases diagram . 30
5.5.5 Use cases description . 30
5.5.6 Sequence diagrams . 31
5.6 Power quality . 31
5.6.1 General . 31
5.6.2 Constraints / assumptions / design considerations . 31
5.6.3 Actors . 32
5.6.4 Use cases diagram . 32
5.6.5 Use cases description . 32
5.6.6 Sequence diagrams . 32
5.7 Asset . 33
5.7.1 General . 33

5.7.2 Constraints / assumptions / design considerations . 34
5.7.3 Actors . 34
5.7.4 Use cases diagram . 34
5.7.5 Use cases description . 34
5.7.6 Sequence diagram . 34
5.8 Parameter configuration . 35
5.8.1 General . 35
5.8.2 Constraints / assumptions / design considerations . 35
5.8.3 Actors . 35
5.8.4 Use cases diagram . 36
5.8.5 Use cases description . 36
5.8.6 Sequence diagrams . 36
5.9 Communication requirements for SS to CC communication . 37
5.9.1 General issues . 37
5.9.2 Functions based on substation- to-control-centre communication . 39
5.9.3 Message performance requirements . 39
5.9.4 Introduction and use of message performance classes . 40
5.9.5 Requirements for data and communication quality . 41
5.9.6 Reliability . 41
5.9.7 Availability . 41
5.9.8 Requirements concerning the communication system . 42
5.10 Modelling requirements for SS to CC communication . 42
6 Configuration aspects . 43
6.1 Requirements . 43
6.2 Extension of the engineering process with SCL . 44
6.2.1 General . 44
6.2.2 Engineering workflow . 44
6.2.3 Integrated engineering workflow – LANs with WAN . 46
6.3 Extension of the SCL schema from IEC 61850-6:2009 . 47
6.3.1 General . 47
6.3.2 Modelling of redundancy . 47
6.3.3 Modelling of data references between SCL files . 55
6.3.4 Functional naming . 58
6.3.5 Examples . 58
6.4 Security aspects . 58
7 Basic Communication Structure – Principles and models . 59
7.1 Communication and Modelling aspects . 59
7.1.1 General . 59
7.1.2 Communication aspects . 59
7.1.3 Proxy/Gateway model . 78
7.1.4 Service tracking . 96
7.2 Modelling and control block classes . 96
7.2.1 General . 96
7.2.2 CONTROL class model for Proxy/Gateway . 96
7.2.3 SETTING-GROUP-CONTROL-BLOCK class model for Proxy/Gateway . 112
7.2.4 REPORT-CONTROL-BLOCK class model for Proxy/Gateway . 113
7.2.5 LOG-CONTROL-BLOCK class model for Proxy/Gateway . 113
7.2.6 File transfer . 113
7.2.7 Applying cyber security to the Proxy/Gateway . 114

– 4 – IEC TR 61850-90-2:2016  IEC 2016
8 SCSM aspects – MMS and ISO/IEC 8802-3 . 115
8.1 General . 115
8.2 TCP/IP T-Profiles . 115
8.3 OSI T-Profile . 116
9 SCSM aspects – Sampled values over ISO/IEC 8802-3 (IEC 61850-9-2) . 116
Annex A (informative) Protocol Implementation Conformance Statement . 117
A.1 General . 117
A.2 ACSI basic conformance statement . 117
A.3 ACSI models conformance statement . 118
A.4 ACSI service conformance statement . 119
A.5 Redundancy support statement . 122
A.6 Transformation function support statement . 122
A.7 Proxy/Gateway model support statement . 123
A.8 Instruction and comments on using this template . 124
A.8.1 Comments . 124
A.8.2 Instructions . 124
A.8.3 Revision history . 124
Annex B (informative) SCL syntax: XML schema definition . 125
Annex C (informative) Substation SCD example . 129
Annex D (informative) Control Centre SCD example . 155
Bibliography . 188

Figure 1 – Connectivity and communication paths of a substation . 11
Figure 2 – Use case diagram for substation to control centre communication . 16
Figure 3 – Telecontrol use case diagram . 19
Figure 4 – Principle of data forwarding, depending on the operation mode . 25
Figure 5 – Disturbance use cases diagram . 27
Figure 6 – Counting use cases diagram . 30
Figure 7 – Power quality use cases diagram . 32
Figure 8 – Asset management touches a broad range of core electric utility processes . 33
Figure 9 – Asset supervision use cases diagram. 34
Figure 10 – Parameter configuration use cases diagram . 36
Figure 11 – Levels and logical interfaces in substation automation systems . 38
Figure 12 – Definition of transfer time t . 39
Figure 13 – Scope of separated engineering workflow . 44
Figure 14 – Engineering workflow . 46
Figure 15 – Scope of integrated workflow . 47
Figure 16 – Diagram of eTr-IEC61850-90-2:RedundancyModes . 48
Figure 17 – Diagram of eTr-IEC61850-90-2:LinkModes . 49
Figure 18 – Diagram of eTr-IEC61850-90-2:ClientRedundancyServices . 50
Figure 19 – Diagram of eTr-IEC61850-90-2:LDeviceOverride . 51
Figure 20 – Diagram of eTr-IEC61850-90-2:RedundantServerTo . 52
Figure 21 – Diagram of eTr-IEC61850-90-2:RedundantClientTo . 54
Figure 22 – Diagram of eTr-IEC61850-90-2:StandbyLinkMode . 55
Figure 23 – Diagram of eTr-IEC61850-90-2:ExternalSCL . 56

Figure 24 – Diagram of eTr-IEC61850-90-2:ProxyOf . 57
Figure 25 – Communication concept . 60
Figure 26 – SS to CC communication via direct access . 65
Figure 27 – Basic configuration for indirect access . 66
Figure 28 – Configuration without redundancy . 70
Figure 29 – AccessPoint redundancy . 71
Figure 30 – Device redundancy of frontend computers . 72
Figure 31 – Device redundancy of Proxy/Gateway and frontend computers . 73
Figure 32 – Multiple redundancies . 74
Figure 33 – Usage of buffers and duplicate filter . 77
Figure 34 – Product related naming Proxy/Gateway . 80
Figure 35 – Modelling a Proxy/Gateway IED – Preserving the logical devices . 82
Figure 36 – Modelling a Proxy/Gateway IED – Renaming of logical devices . 83
Figure 37 – Modelling a Proxy/Gateway IED – Rearranging logical nodes . 84
Figure 38 – Modelling a Proxy/Gateway IED – Merging of logical nodes . 85
Figure 39 – Modelling a Proxy/Gateway IED – Splitting of logical nodes . 86
Figure 40 – Modelling a Proxy/Gateway IED – Transform to semantically defined LN . 87
Figure 41 – Modelling a Proxy/Gateway IED – Convert semantically defined LNs . 88
Figure 42 – Modelling a Proxy/Gateway IED – Create an array subset . 89
Figure 43 – Comparison of indirect, indirect transparent and direct access . 92
Figure 44 – Principle of the Proxy/Gateway control model . 96
Figure 45 – State machine of direct control with normal security . 101
Figure 46 – Direct control with normal security – positive case . 102
Figure 47 – Direct control with normal security – negative case . 103
Figure 48 – State machine of SBO control with normal security . 104
Figure 49 – SBO control with normal security – positive case . 105
Figure 50 – SBO control with normal security – negative case . 106
Figure 51 – State machine of direct control with enhanced security . 107
Figure 52 – Direct control with enhanced security – positive case . 108
Figure 53 – Direct control with enhanced security – negative case . 109
Figure 54 – State machine of SBO control with enhanced security . 110
Figure 55 – SBO control with enhanced security – positive case . 111
Figure 56 – SBO control with enhanced security – negative case . 112
Figure 57 – Integrity protection for the Clear Token . 114
Figure 58 – Integrity protection for the Clear Token and the MMS message . 114
Figure 59 – Integrity protection and encryption for the MMS message . 115
Figure 60 – MMS Objects and services used . 115

Table 1 – Constraints for acquisition of status . 21
Table 2 – Constraints for acquisition of alarms . 22
Table 3 – Constraints for remote control . 22
Table 4 – Forwarding of information depending on the operation mode . 25
Table 5 – Typical Transfer time requirements for control and monitoring data . 41

– 6 – IEC TR 61850-90-2:2016  IEC 2016
Table 6 – Attributes of the eTr-IEC61850-90-2:RedundancyModes element . 48
Table 7 – Attributes of the eTr-IEC61850-90-2:LinkModes element . 49
Table 8 – Elements of the eTr-IEC61850-90-2:ClientRedundancyServices element . 50
Table 9 – Attributes of the eTr-IEC61850-90-2:RedundantServerTo element . 53
Table 10 – Attributes of the eTr-IEC61850-90-2:RedundantClientTo element . 54
Table 11 – Values of the eTr-IEC61850-90-2:tLinkModeEnum . 55
Table 12 – Attributes of the eTr-IEC61850-90-2:ExternalSCL element . 56
Table 13 – Attributes of the eTr-IEC61850-90-2:ProxyOf element . 58
Table 14 – Use case vs. IEC 61850 – Service table . 62
Table 15 – Link states . 68
Table 16 – Usage of buffered / unbuffered reporting for the redundancy schemes . 68
Table 17 – Requirements versus redundancy scheme . 69
Table 18 – Extension of the common LN class . 78
Table 19 – Negative responses to service requests . 98
Table 20 – Mapping of Comtrade folder names in the Proxy/Gateway . 113
Table A.1 – Basic conformance statement . 117
Table A.2 – ACSI models conformance statement . 118
Table A.3 – ACSI service conformance statement . 119
Table A.4 – Redundancy mechanism support statement . 122
Table A.5 – Proxy/Gateway transformation function support statement . 123
Table A.6 – Proxy/Gateway model support statement . 123

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
COMMUNICATION NETWORKS AND
SYSTEMS FOR POWER UTILITY AUTOMATION –

Part 90-2: Using IEC 61850 for communication
between substations and control centres

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 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,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental 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 agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use 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 promote 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 indicated 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) 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 damage 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 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 subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC TR 61850-90-2, which is a technical report, has been prepared by IEC technical
committee 57: Power systems management and associated information exchange.
The text of this technical report is based on the following documents:
DTR Report on voting
57/1578/DTR 57/1641/RVC
– 8 – IEC TR 61850-90-2:2016  IEC 2016

Full information on the voting for the approval of this technical report 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.
A list of all the parts in the IEC 61850 series, published under the general title Communication
networks and systems for power utility automation, 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 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.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – 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 document using a
colour printer.
INTRODUCTION
Following the publication of IEC 61850, substations using IEC 61850 technologies have been
implemented. The concepts of IEC 61850 are also used in applications outside of the
substation such as distributed energy resources, hydro power plants and wind power plants.
Therefore, IEC 61850 forms the foundation for a globally standardized utility communication
network.
The object models and configuration language introduced by IEC 61850 provide new
possibilities for the management of the automation system. A direct and seamless access
from the control and maintenance centres to the IEDs of the substation automation system
allows efficient data management of the overall control system.
The possibility of using IEC 61850 for communication between substations and control
systems is mentioned in IEC TR 62357-1:2012 without any specification of how it will be used.
The issue was evaluated in 2002 by a task force. The conclusion was that IEC 61850 is
suitable, but may eventually require the following extensions:
• A new mapping of the communication services on a protocol suitable for wide area
communication;
• Extensions of the data model to provide a control centre view of the substation. A
further important benefit to users is the possibility of entering configuration information
only once.
Currently, substation configuration information is available in the SCL and control centre
configuration information is available in the CIM. The models have been harmonized, so that
an automatic transfer of the information from one model to the other should be possible. New
work will describe how that configuration information can be transferred between CIM and
SCL. However, this document does not address the overall topic of CIM/IEC 61850
harmonisation. That will be addressed separately in the future technical report IEC TR 62361-
102.
IEC 61850 was initially prepared for information exchange between the devices of a
substation automation system. The concepts are now also used in other power system
application domains.
This technical report provides a comprehensive overview of the matters that need to be
considered in order to use IEC 61850 for information exchange between substations and
control or maintenance systems. Areas that require extension of specific parts of the existing
IEC 61850 standards will be incorporated in future editions of the affected part of IEC 61850.
A similar report discussing the use of IEC 61850 for communication between substations has
been issued as IEC TR 61850-90-1.
The namespace of this technical report is “(Tr)IEC 61850-90-2:2015A”.

– 10 – IEC TR 61850-90-2:2016  IEC 2016
COMMUNICATION NETWORKS AND
SYSTEMS FOR POWER UTILITY AUTOMATION –

Part 90-2: Using IEC 61850 for communication
between substations and control centres

1 Scope
This part of IEC 61850, which is a technical report, provides a comprehensive overview of the
different aspects that need to be considered while using IEC 61850 for information exchange
between substations and control or maintenance centres or other system level applications. In
particular, this technical report:
• defines use cases and communication requirements that require an information
exchange between substations and control or maintenance centres
• describes the usage of the configuration language of IEC 61850-6
• gives guidelines for the selection of communication services and architectures
compatible with IEC 61850
• describes the engineering workflow
• introduces the use of a Proxy/Gateway concept
• describes the links regarding the Specific Communication Service Mapping (SCSM)
This technical report does not define constraints or limitations for specific device
implementations. There is no specific chapter for cyber security which is tackled when it is
necessary. The model, for IEC TR 61850-90-2, provides security functions based upon the
security threats and security functions found in IEC TS 62351-1 and IEC TS 62351-2. This
technical report touches several security aspects with the following basic assumptions:
• Information authentication and integrity (e.g. the ability to provide tamper detection) is
needed
• Confidentiality is optional
It shall be possible to provide information authentication and integrity in an end-to-end
method, regardless of information hierarchies. The typical method to provide this security
function is through some type of information/message authentication code. IEC 62351-4:2007
and IEC 62351-9 describe how authentication and integrity is achieved for IEC 61850-8-1. A
later version of IEC 62351-4 will provide means to ensure end-to-end data integrity through
Proxy/Gateways.
Beneath information authentication and integrity, information availability is an important
aspect for telecontrol. This technical report provides redundancy architectures to enhance the
availability of information in control and maintenance centres.
The scheme shown in Figure 1 gives an overview of the connectivity and the communication
paths. In particular it indicates the principle to access directly or indirectly – via the
Proxy/Gateway – to an IED. An application of security controls for substation to control centre
communication can be found in IEC 62351-10:2012, 6.4.3. Thus, the substation automation
system has to be considered inside a perimeter of cyber security. The access is totally
checked by security access points (this document does not describe such a security access
_______________
Under consideration.
point). The boundary of the electronic security perimeter is defined by the point, where the
communication line leaves the perimeter of the substation over public ground. There might be
more than one security access point, where separation of applications (e.g. control centre and
maintenance centre) is required. When more than one client needs access to the same
security access point information level access control, e.g. according to IEC TS 62351-
8:2011, may be added. IEC TS 62351-8:2011 may also be used in other cases, where
different access rights are required.

Substation
Access Control
IED
IED
WAN
LAN
Direct access
Indirect access
Security access point
Proxy/
Gateway
Electronic Security Perimeter
IEC
Figure 1 – Connectivity and communication paths of a substation
The majority of applications for which this technical report is applicable will use the services
of MMS (ISO 9506) mapped to ISO/IEC 8802-3 frame formats, as described in
IEC 61850-8-1:2011.
The primary application for the use of indirect access, as described in this technical report,
will be for telecontrol applications. Nevertheless this technical report does not imply that the
use of a Proxy/Gateway is required for telecontrol applications. Direct access may also be
used for telecontrol applications where applicable and accepted by the customer.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60870-4:1990, Telecontrol equipment and systems – Part 4: Performance requirements
IEC 60870-5-103:1997, Telecontrol equipment and systems – Part 5-103: Transmission
protocols – Companion standard for the informative interface of protection equipment

– 12 – IEC TR 61850-90-2:2016  IEC 2016
IEC 60870-5-104:2006, Telecontrol equipment and systems – Part 5-104: Transmission
protocols – Network access for IEC 60870-5-101 using standard transport profiles
IEC 61158-6, Industrial communication networks – Fieldbus specifications
IEC TS 61850-2:2003, Communication networks and systems in substations – Part 2:
Glossary
IEC 61850-4:2011, Communication networks and systems for power utility automation –
Part 4: System and project management
IEC 61850-5:2013, Communication networks and systems for power utility automation –
Part 5: Communication requirements for functions and device models
IEC 61850-6:2009, Communication networks and systems for power utility automation –
Part 6: Configuration description language for communication in electrical substations related
to IEDs
IEC 61850-7-1:2011, Communication networks and systems for power utility automation –
Part 7-1: Basic communication structure – Principles and models
IEC 61850-7-2:2010, Communication networks and systems for power utility automation –
Part 7-2: Basic information and communication structure – Abstract communication service
interface (ACSI)
IEC 61850-7-3:2010, Communication networks and systems for power utility automation –
Part 7-3: Basic communication structure – Common data classes
IEC 61850-7-4:2010, Communication networks and systems for power utility automation –
Part 7-4: Basic communication structure – Compatible logical node classes and data object
classes
IEC 61850-8-1:2011, Communication networks and systems for power utility automation –
Part 8-1: Specific communication service mapping (SCSM) – Mappings to MMS (ISO 9506-1
and ISO 9506-2) and to ISO/IEC 8802-3
IEC 61850-9-2:2011, Communication networks and systems for power utility automation –
Part 9-2: Specific communication service mapping (SCSM) – Sampled values over ISO/IEC
8802-3
IEC TS 61850-80-4, Communication networks and systems for power utility automation –
Part 80-4: Translation from COSEM object model (IEC 62056) to the IEC 61850 data model
IEC TR 61850-90-3, Communication networks and systems for power utility automation –
Part 90-3: Using IEC 61850 for condition monitoring diagnosis and analysis
IEC TR 61850-90-5:2012, Communication networks and systems for power utility automation
– Part 90-5: Use of IEC 61850 to transmit synchrophasor information according to IEEE
C37.118
IEC TR 61850-90-12:2015, Communication networks and systems for power utility automation

– Part 90-12: Wide area network engineering guidelines
_______________
To be published.
IEC 62056-6, Electricity metering data exchange – The DLMS/COSEM suite
IEC TS 62351-4:2007, Power systems management and associated information exchange –
Data and communications security – Part 4: Profiles including MMS
IEC TS 62351-8:2011, Power systems management and associated information exchange –
Data and communications security – Part 8: Role-based access control
IEC 62351-9, Power systems management and associated information exchange – Data and
communications security – Part 9: Cyber security key management for power system
equipment
IEC TR 62351-10:2012, Power systems management and associated information exchange –
Data and communications security – Part 10: Security architecture guidelines
IEC 62351-11, Power systems management and associated information exchange – Data and
communications security – Part 11: Security for XML Files
IEC 81346-1:2009, Industrial systems, installations and equipment and industrial products –
Structuring principles and reference designations – Part 1: Basic rules
IEC 81346-2:2009, Industrial systems, installations and equipment and industrial products –
Structuring principles and reference designations – Part 2: Classification of objects and codes
for classes
IEEE 1815-2012, IEEE Standard for Electric Power Systems Communications-Distributed
Network Protocol (DNP3)
RFC 1122:1989, Requirements for Internet Hosts – Communication Layers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC TS 61850-2:2003
and IEC 61850-7-2:2010, as well as the following, apply.
3.1
control centre
place where a master station (SCADA, EMS, DMS, GMS, grid operator) receives and
processes data coming from substations
Note 1 to entry: The control centre may also perform the functions of a maintenance centre.
3.2
maintenance centre
place from where maintenance, management of asset, disturbance analysis and metering are
managed
3.3
Proxy/Gateway
IED containing an IEC 61850 server which service
...