FORM CDV (IEC)
2007-02-12
57/942/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJET DE COMITÉ POUR VOTE (CDV)
Project number IEC 61850-7-1 Ed.2
Numéro de projet
IEC/TC or SC:
TC 57
CEI/CE ou SC:
Secretariat / Secrétariat
Germany
Submitted for parallel voting in
CENELEC
Soumis au vote parallèle au
CENELEC
Date of circulation
Date de diffusion
2008-05-09
Closing date for voting (Voting
mandatory for P-members)
Date de clôture du vote (Vote
obligatoire pour les membres (P))
2008-10-10
Also of interest to the following committees
Intéresse également les comités suivants
Supersedes document
Remplace le document
57/940/MCR
Functions concerned
Fonctions concernées
Safety
Sécurité
EMC
CEM
Environment
Environnement
Quality assurance
Assurance qualité
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THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE. IT
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RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT, WITH THEIR
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DOCUMENTATION.
Title : IEC 61850-7-1 Ed.2: Communication networks and systems for power utility
automation - Part 7-1: Basic communication structure - Principles and models
Introductory note: This CDV is circulated in English only
ATTENTION
VOTE PARALLÈLE
CEI – CENELEC
L’attention des Comités nationaux de la CEI, membres du
CENELEC, est attirée sur le fait que ce projet de comité
pour vote (CDV) de Norme internationale est soumis au
vote parallèle.
Les membres du CENELEC sont invités à voter via le
système de vote en ligne du CENELEC.
ATTENTION
IEC – CENELEC
PARALLEL VOTING
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) for an International Standard is submitted for
parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
Copyright © 2008 International Electrotechnical Commission, IEC. All rights reserved. It is
permitted to download this electronic file, to make a copy and to print out the content for the sole
purpose of preparing National Committee positions. You may not copy or "mirror" the file or
printed version of the document, or any part of it, for any other purpose without permission in
writing from IEC.
61850-7-1 ED 2 © IEC:2008(E) 57/942/CDV
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CONTENTS
FOREWORD...................................................................................................................... - 8 -
INTRODUCTION.............................................................................................................. - 10 -
1 Scope.............................................................................................................................12
2 Normative references .....................................................................................................13
3 Terms and definitions .....................................................................................................13
4 Abbreviated terms ..........................................................................................................14
5 Overview of the IEC 61850 series concepts....................................................................14
5.1 Objective ...............................................................................................................14
5.2 Topology and communication functions of substation automation systems.............15
5.3 The information models of substation automation systems ....................................16
5.4 Applications modelled by logical nodes defined in IEC 61850-7-4..........................18
5.5 The semantic is attached to data ...........................................................................21
5.6 The services to exchange information....................................................................23
5.7 Services mapped to concrete communication protocols .........................................24
5.8 The configuration of the automation system...........................................................25
5.9 Summary...............................................................................................................26
6 Modelling approach of the IEC 61850 series...................................................................26
6.1 Decomposition of application functions and information.........................................26
6.2 Creating information models by stepwise composition ...........................................28
6.3 Example of an IED composition .............................................................................31
6.4 Information exchange models ................................................................................31
6.4.1 Introduction ...............................................................................................31
6.4.2 Output model .............................................................................................33
6.4.3 Input model ...............................................................................................36
6.4.4 Model for statistical and historical statistical data ......................................46
6.4.5 Model for time synchronization ..................................................................49
7 Application view..............................................................................................................50
7.1 Introduction ...........................................................................................................50
7.2 First modelling step – Logical nodes and data .......................................................51
7.3 Mode and Behaviour of a logical node ...................................................................55
7.4 Use of measurement ranges and alarms for supervision functions.........................55
7.5 Data used for limiting the access to control actions ...............................................56
7.6 Logical node used for extended logging functions..................................................57
8 Device view ....................................................................................................................57
8.1 Introduction ...........................................................................................................57
8.2 Second modelling step – logical device model .......................................................58
8.2.1 The Device Nameplate ..............................................................................59
8.2.2 Gateways and Proxies ...............................................................................60
8.2.3 Logical devices for monitoring external device health ................................62
8.2.4 Logical devices management hierarchy .....................................................63
9 Communication view.......................................................................................................64
9.1 The service models of the IEC 61850 series..........................................................64
9.2 The virtualisation ...................................................................................................66
9.3 Basic information exchange mechanisms ..............................................................67
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9.4
The client-server building blocks ...........................................................................69
9.4.1 Server .......................................................................................................69
9.4.2 Client-server roles .....................................................................................70
9.5 Logical nodes communicate with logical nodes ......................................................71
9.6 Interfaces inside and between devices ..................................................................72
10 Where physical devices, application models and communication meet............................74
11 Relationships between IEC 61850-7-2, IEC 61850-7-3 and IEC 61850-7-4 .....................75
11.1 Refinements of class definitions ............................................................................75
11.2 Example 1 – Logical node and data class ..............................................................76
11.3 Example 2 – Relationship of IEC 61850-7-2, IEC 61850-7-3, and IEC 61850-
7-4 ........................................................................................................................79
12 Formal specification method ...........................................................................................80
12.1 Notation of ACSI classes .......................................................................................80
12.2 Class modelling.....................................................................................................81
12.2.1 Overview ...................................................................................................81
12.2.2 Common data class ...................................................................................82
12.2.3 Logical node class .....................................................................................84
12.3 Service tables........................................................................................................86
12.4 Referencing instances ...........................................................................................86
13 Name spaces..................................................................................................................90
13.1 General .................................................................................................................90
13.2 Name spaces defined in IEC 61850-7-x .................................................................91
13.3 Specification of name spaces ................................................................................95
13.3.1 General .....................................................................................................95
13.3.2 Definition of logical node name space........................................................95
13.3.3 Definition of data name space....................................................................96
13.3.4 Definition of common data class name space ............................................96
13.4 Attributes for references to name spaces...............................................................97
13.4.1 General .....................................................................................................97
13.4.2 Attribute for logical device name space (ldNs) ...........................................98
13.4.3 Attribute for logical node name space (lnNs)..............................................98
13.4.4 Attribute for data name space (dataNs)......................................................99
13.4.5 Attribute for common data class name space (cdcNs) ................................99
13.5 Common rules for extensions of name spaces.......................................................99
14 Extension rules for logical nodes, data and common data classes ................................100
14.1 General ...............................................................................................................100
14.2 Basic rules ..........................................................................................................100
14.2.1 Rules for Logical Nodes (LN) ...................................................................101
14.2.2 Rules for Data .........................................................................................101
14.3 Multiple instances of LN classes for dedicated and complex functions .................102
14.3.1 Example for time overcurrent ...................................................................102
14.3.2 Example for PDIS ....................................................................................102
14.3.3 Example for Power transformer................................................................102
14.3.4 Example for Auxiliary network..................................................................102
14.4 Specialisation of Data by use of number extensions ............................................103
14.5 Rules for names of new Logical Nodes ................................................................103
14.5.1 Examples for new LNs .............................................................................103
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14.6
Rules for names of new Data...............................................................................104
14.6.1 Example for new Data..............................................................................104
14.7 Rules for new Common Data Classes (CDC) .......................................................104
Annex A (informative) Overview of logical nodes and data .................................................105
A.1 Compatible logical node classes and data classes (IEC 61850-7-4)..............................105
A.1.1 List of LN groups (IEC 61850-7-4) .......................................................................105
A.1.2 LN classes (IEC 61850-7-4).................................................................................105
A.1.3 Data classes (IEC 61850-7-4)..............................................................................105
A.2 Common data class specifications (IEC 61850-7-3) ......................................................106
Annex B (informative) Allocation of data to logical nodes ...................................................108
Annex C (informative) Use of the substation configuration language (SCL) ........................111
C.1 Introduction ..................................................................................................................111
C.2 SCL and options in logical nodes..................................................................................111
C.3 SCL and options in data ...............................................................................................112
Annex D (informative) Applying the LN concept to options for future extensions.................113
D.1 Introduction – Seamless telecontrol communication architecture ..................................113
D.2 Teleprotection ..............................................................................................................116
D.2.1 Distance protection..............................................................................................116
D.2.2 Differential protection ..........................................................................................117
D.2.3 Extended functionality .........................................................................................117
Annex E (informative) Relation between logical nodes and PICOMs ..................................118
Annex F (informative) Relation between IEC 61850-7-x (IEC 61850-8-x) and UCA 2.0
®
.....119
Annex G (Informative) Mapping the ACSI to real communication systems ..........................120
G.1 Introduction ..................................................................................................................120
G.2 Mapping example (IEC 61850-8-1) ...............................................................................122
Index ..................................................................................................................................128
Figure 1 – Relations between parts of the IEC 61850 series .................................................15
Figure 2 – Sample substation automation topology ...............................................................16
Figure 3 – Modelling approach (conceptual)..........................................................................17
Figure 4 – Logical node information categories .....................................................................20
Figure 5 – Build up of devices (principle) ..............................................................................20
Figure 6 – Position information depicted as a tree (conceptual) ............................................21
Figure 7 – Service excerpt ....................................................................................................23
Figure 8 – Example of communication mapping ....................................................................25
Figure 9 – Summary..............................................................................................................26
Figure 10 – Decomposition and composition process (conceptual)........................................27
Figure 11 – XCBR1 information depicted as a tree................................................................30
Figure 12 – Example of IED composition...............................................................................31
Figure 13 – Output and Input model (principle) .....................................................................32
Figure 14 – Output model (step 1) (conceptual) ...................................................................33
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Figure 15 – Output model (step 2) (conceptual) ...................................................................34
Figure 16 – GSE output model (conceptual)..........................................................................34
Figure 17 – Setting data (conceptual) ...................................................................................35
Figure 18 – Input model for analogue values (step 1) (conceptual).......................................37
Figure 19 – Range and deadbanded value (conceptual).......................................................38
Figure 20 – Input model for analogue values (step 2) (conceptual).......................................39
Figure 21 – Reporting and logging model (conceptual)..........................................................40
Figure 22 – Data set members and reporting ........................................................................40
Figure 23 – Buffered report control block (conceptual) ..........................................................41
Figure 24 – Buffer time .........................................................................................................43
Figure 25 – Data set members and inclusion-bitstring ...........................................................43
Figure 26 – Log control block (conceptual)............................................................................44
Figure 27 – Peer-to-peer data value publishing model (conceptual) ......................................45
Figure 28 – Conceptual model of statistical and historical statistical data (1) ........................47
Figure 29 – Conceptual model of statistical and historical statistical data (2) ........................49
Figure 30 – Real world devices .............................................................................................50
Figure 31 – Logical nodes and data (IEC 61850-7-2) ............................................................52
Figure 32 – Simple example of modelling..............................................................................53
Figure 33 – Basic building blocks..........................................................................................53
Figure 34 – Logical nodes and PICOM..................................................................................54
Figure 35 – Logical nodes connected (outside view in IEC 61850-7-x) ..................................54
Figure 36 – Mode and Behavior data (IEC 61850-7-4)...........................................................55
Figure 37 – Local and Remote data (IEC 61850-7-4) ............................................................56
Figure 38 – Logical device building block..............................................................................58
Figure 39 – Logical devices and LLN0/LPHD ........................................................................59
Figure 40 – The common data class DPL ..............................................................................60
Figure 41 – Logical devices in proxies or gateways...............................................................61
Figure 42 – Logical devices for monitoring external device health.........................................62
Figure 43 – Logical devices management hierarchy ..............................................................63
Figure 44 – ACSI communication methods............................................................................65
Figure 45 – Virtualisation ......................................................................................................67
Figure 46 – Virtualisation and usage .....................................................................................67
Figure 47 – Information flow and modelling ...........................................................................68
Figure 48 – Application of the GSE model.............................................................................68
Figure 49 – Server building blocks ........................................................................................69
Figure 50 – Interaction between application process and application layer
(client/server)........................................................................................................................70
Figure 51 – Example for a service.........................................................................................70
Figure 52 – Client/server and logical nodes ..........................................................................70
Figure 53 – Client and server roles .......................................................................................71
Figure 54 – Logical nodes communicate with logical nodes...................................................72
Figure 55 – Interfaces inside and between devices ...............................................................73
