IEC 61968-4:2019

IEC 61968-4 ®
Edition 2.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Application integration at electric utilities – System interfaces for distribution
management –
Part 4: Interfaces for records and asset management

Intégration d'applications pour les services électriques – Interfaces système
pour la gestion de la distribution –
Partie 4: Interfaces pour la gestion des dossiers et des actifs

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IEC 61968-4 ®
Edition 2.0 2019-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Application integration at electric utilities – System interfaces for distribution

management –
Part 4: Interfaces for records and asset management

Intégration d'applications pour les services électriques – Interfaces système

pour la gestion de la distribution –

Partie 4: Interfaces pour la gestion des dossiers et des actifs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.200 ISBN 978-2-8322-6595-6

– 2 – IEC 61968-4:2019  IEC 2019
CONTENTS
FOREWORD . 8
INTRODUCTION . 10
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 13
4 Reference and information models . 13
4.1 General . 13
4.2 Reference model . 13
4.2.1 General . 13
4.2.2 Network Operation Monitoring (NMON) . 16
4.2.3 Asset Monitoring and Measurement (AMM) . 16
4.2.4 Asset Decision Support (ADS) . 16
4.2.5 Substation and Network Inventory (EINV) . 17
4.2.6 Geographical Inventory (GINV) . 17
4.2.7 Maintenance and Inspection (MAI) . 17
4.2.8 Work Scheduling and Dispatching (SCHD) . 17
4.3 Interface Reference Model . 17
4.4 Records and asset management . 18
5 Records and asset management message types . 19
5.1 General . 19
5.2 AssetList messages . 19
5.2.1 General . 19
5.2.2 Applications . 19
5.2.3 Message format . 20
5.3 AssetCatalogue messages . 21
5.3.1 General . 21
5.3.2 Applications . 21
5.3.3 Message format . 22
5.4 TypeAssetCatalogue messages . 27
5.4.1 General . 27
5.4.2 Applications . 27
5.4.3 Message format . 28
5.5 AssetTemplate messages . 30
5.5.1 General . 30
5.5.2 Applications . 30
5.5.3 Message format . 31
5.6 AssetDetail messages . 36
5.6.1 General . 36
5.6.2 Applications . 36
5.6.3 Message format . 37
5.7 AssetHistory message . 47
5.7.1 General . 47
5.7.2 Applications . 47
5.7.3 Message format . 48
5.8 Asset Work History . 53
5.8.1 General . 53

5.8.2 Applications . 53
5.8.3 Message format . 53
5.9 AssetPSRDetails message . 58
5.9.1 General . 58
5.9.2 Applications . 58
5.9.3 Message format . 59
5.10 AssetProcedures message . 85
5.10.1 General . 85
5.10.2 Applications . 85
5.10.3 Message format . 85
5.11 Procedures message . 87
5.11.1 General . 87
5.11.2 Applications . 87
5.11.3 Message format . 87
5.12 ProcedureDataSets message . 89
5.12.1 General . 89
5.12.2 Applications . 89
5.12.3 Message format . 90
5.13 AssetMeasurements message . 95
5.13.1 General . 95
5.13.2 Applications . 95
5.13.3 Message format . 95
5.14 MeasurementDetails message . 97
5.14.1 General . 97
5.14.2 Applications . 97
5.14.3 Message format . 97
5.15 MeasurementValues message . 103
5.15.1 General . 103
5.15.2 Applications . 103
5.15.3 Message format . 103
5.16 Analytics message . 105
5.16.1 General . 105
5.16.2 Applications . 105
5.16.3 Message format . 106
5.17 AssetAnalytics message . 108
5.17.1 General . 108
5.17.2 Applications . 108
5.17.3 Message format . 108
5.18 AssetGroupAnalytics message . 113
5.18.1 General . 113
5.18.2 Applications . 113
5.18.3 Message format . 114
5.19 AssetHealthEvents message . 115
5.19.1 General . 115
5.19.2 Applications . 115
5.19.3 Message format . 116
6 Document conventions . 118
6.1 UML diagrams. 118
6.2 Message definitions . 118

– 4 – IEC 61968-4:2019  IEC 2019
6.2.1 General . 118
6.2.2 Mandatory vs. optional . 118
6.2.3 Verb tense . 118
6.3 Synchronous versus asynchronous messages . 118
6.4 Depiction of simple acknowledgment messages . 119
Annex A (normative) Description of message type verbs . 120
Annex B (informative) Use cases . 122
B.1 Business use cases . 122
B.2 System use cases . 123
B.2.1 General . 123
B.2.2 Analytical evaluation of asset health . 123
B.2.3 Replacement of asset . 131
Annex C (informative) Asset management . 138
C.1 General . 138
C.2 Condition-based maintenance (CBM) . 138
C.3 Asset management and ISO 55000 . 140
Annex D (informative) Asset models and information exchange – The case for formal

instance templates . 143
D.1 CIM asset containment . 143
D.2 Common instance templates for interoperability . 143
D.2.1 General . 143
D.2.2 Instance template documentation . 144
D.2.3 Instance templates for breakers . 145
Annex E (informative) Asset models and information exchange. 157
E.1 General . 157
E.2 Asset replacement . 158
E.3 Data for asset condition analytics. 158
E.4 Data for operational analytics . 159
Annex F (informative) Asset measurement models and information exchange . 161
F.1 General . 161
F.2 Ad hoc measurements . 162
F.3 Online measurements . 164
Annex G (informative) Analytics models and information exchange . 166

Figure 1 – Illustration of Asset-related message flows . 14
Figure 2 – Illustration of Measurements-related message flows . 15
Figure 3 – Illustration of Analytics-related message flows . 16
Figure 4 – AssetList message exchange . 20
Figure 5 – AssetList message format . 20
Figure 6 – AssetCatalogue message exchange . 22
Figure 7 – AssetCatalogue message format . 23
Figure 8 – AssetCatalogue message: Asset element . 24
Figure 9 – AssetCatalogue message: BusbarSectionInfo element . 24
Figure 10 – AssetCatalogue message: PowerTransformerInfo element . 25
Figure 11 – AssetCatalogue message: CatalogAssetType element . 25
Figure 12 – AssetCatalogue message: Manufacturer element . 26

Figure 13 – Type Asset Catalogue message exchange . 28
Figure 14 – TypeAssetCatalogue message format . 29
Figure 15 – Asset Template query exchange . 30
Figure 16 – Asset template creation exchange . 31
Figure 17 – AssetTemplate message showing the AssetContainer element . 32
Figure 18 – AssetTemplate message showing the Asset and Medium elements . 33
Figure 19 – AssetTemplate message showing the Bushing, InterrupterUnit, and
OperatingMechanism elements . 34
Figure 20 – Asset Detail message exchange . 37
Figure 21 – Asset Detail message format . 37
Figure 22 – AssetDetail message: Asset element . 38
Figure 23 – AssetDetail message: AssetDeployment element (included in the Asset
element shown in Figure 22) . 39
Figure 24 – AssetDetail message: SwitchOperationSummary element (included as
BreakerOperation association within the Asset element shown in Figure 22) . 40
Figure 25 – AssetDetail message: Location element . 41
Figure 26 – AssetDetail message: Ownership element . 42
Figure 27 – AssetDetail message: Joint element . 43
Figure 28 – AssetDetail message: Streetlight element . 44
Figure 29 – AssetDetail message: Structure element . 45
Figure 30 – AssetDetail message: StructureSupport element . 46
Figure 31 – Asset History message exchange . 48
Figure 32 – AssetHistory message format . 49
Figure 33 – AssetHistory message: ActivityRecord element . 50
Figure 34 – AssetHistory message: FailureEvent element . 51
Figure 35 – AssetHistory message: Author element . 52
Figure 36 – Asset Work History message exchange . 53
Figure 37 – AssetWorkHistory message format . 54
Figure 38 – AssetWorkHistory message: WorkTask element . 55
Figure 39 – AssetWorkHistory message: MaintenanceWorkTask element . 56
Figure 40 – AssetWorkHistory message: RepairWorkTask element . 57
Figure 41 – AssetPSRDetails message exchange 1 . 59
Figure 42 – AssetPSRDetails message exchange 2 . 59
Figure 43 – AssetPSRDetails message format . 60
Figure 44 – AssetPSRDetails message: ACLineSegment element . 61
Figure 45 – AssetPSRDetails message: Accumulator element . 62
Figure 46 – AssetPSRDetails message: AsynchronousMachine element . 63
Figure 47 – AssetPSRDetails message: Breaker element . 64
Figure 48 – AssetPSRDetails message: BusbarSection element . 65
Figure 49 – AssetPSRDetails message: Clamp element . 66
Figure 50 – AssetPSRDetails message: CompositeSwitch element . 67
Figure 51 – AssetPSRDetails message: EnergyConsumer element . 68
Figure 52 – AssetPSRDetails message: EnergySource element . 69
Figure 53 – AssetPSRDetails message: ExternalNetworkInjection element . 70

– 6 – IEC 61968-4:2019  IEC 2019
Figure 54 – AssetPSRDetails message: FrequencyConverter element . 71
Figure 55 – AssetPSRDetails message: GroundingImpedance element . 72
Figure 56 – AssetPSRDetails message: NonRotatingEnergy element . 73
Figure 57 – AssetPSRDetails message: PetersenCoil element . 74
Figure 58 – AssetPSRDetails message: PowerTransformer element . 75
Figure 59 – AssetPSRDetails message: PowerTransformerEnd element . 76
Figure 60 – AssetPSRDetails message: TransformerTank element . 77
Figure 61 – AssetPSRDetails message: ProtectedSwitch element . 78
Figure 62 – AssetPSRDetails message: SeriesCompensator element . 79
Figure 63 – AssetPSRDetails message: ShuntCompensator element . 80
Figure 64 – AssetPSRDetails message: StaticVarCompensator element . 81
Figure 65 – AssetPSRDetails message: Switch element . 82
Figure 66 – AssetPSRDetails message: SynchronousMachine element . 83
Figure 67 – AssetPSRDetails message: TapChanger element . 84
Figure 68 – AssetProcedures message exchange . 85
Figure 69 – AssetProcedures message format . 86
Figure 70 – Procedures message format . 88
Figure 71 – Procedures message format: AssetTemperaturePressureAnalog element . 89
Figure 72 – ProcedureDataSets message exchange . 90
Figure 73 – ProcedureDataSets message format . 91
Figure 74 – ProcedureDatasets message: AnalogValue element . 92
Figure 75 – ProcedureDataSets message: LabTestDataSet element . 93
Figure 76 – ProcedureDataSets message format: Specimen element . 94
Figure 77 – Asset Measurements message exchange . 95
Figure 78 – AssetMeasurements message format . 96
Figure 79 – MeasurementDetails message format . 98
Figure 80 – MeasurementDetails message format: Analog element . 99
Figure 81 – MeasurementDetails message format: CalculationMethodHierarchy
element. 100
Figure 82 – MeasurementDetails message format: AssetTemperaturePressureAnalog
element. 101
Figure 83 – MeasurementDetails message format: TestStandard element . 102
Figure 84 – MeasurementValues message format . 104
Figure 85 – Analytics message exchanges . 106
Figure 86 – Analytics message format . 107
Figure 87 – AssetAnalytics message format 1 . 109
Figure 88 – AssetAnalytics message format 2 . 110
Figure 89 – AssetAnalytics message format: AnalyticScore element . 111
Figure 90 – AssetAnalytics message format: HealthScore element . 111
Figure 91 – AssetAnalytics message format: RiskScore element . 112
Figure 92 – AssetGroupAnalytics message format . 114
Figure 93 – AssetHealthEvents message exchanges . 116
Figure 94 – AssetHealthEvents message format . 117
Figure B.1 – IEC 62913 Conceptual model (source: IEC 62913-1) . 122

Figure B.2 – Brief description of the use case on "decide asset renewal priorities and
optimise maintenance programmes" (source: IEC 62913-2-1). . 123
Figure C.1 – Illustration of condition-based maintenance (CBM) . 138
Figure C.2 – Illustration of asset management . 140
Figure C.3 – ISO 55000/1/2 asset management concept and clauses. . 141
Figure D.1 – Asset component flexibility provided by CIM . 143
Figure D.2 – Classes utilized in common instance templates . 144
Figure D.3 – SF dead tank breaker variants . 146
Figure D.4 – Common instance template for SF dead tank breaker with 1 tank, 1
mechanism, single breaks . 146
Figure D.5 – Common instance template for SF dead tank breaker with 3 tanks, 1
mechanism, single breaks . 147
Figure D.6 – Common instance template for SF dead tank breaker with 3 tanks, 3
mechanisms, double breaks . 148
Figure D.7 – SF live tank breaker variants . 148
Figure D.8 – Common instance template for SF live tank breaker with 3 insulating
stacks on one base, 1 mechanism, single breaks . 149
Figure D.9 – Common instance template for SF live tank breaker with 6 insulating
stacks on 3 bases, 3 mechanisms, 4 breaks . 150
Figure D.10 – Bulk oil breaker variants . 150
Figure D.11 – Common instance template for bulk oil breaker with 1 tank, 1 mechanism . 151
Figure D.12 – Common instance template for bulk oil breaker with 3 tanks, 1
mechanism . 152
Figure D.13 – Minimum oil breaker variants . 153
Figure D.14 – Common instance template for minimum oil breaker with 3 insulating

stacks on one base, 1 mechanism, single break. 154
Figure D.15 – Air blast breaker variants . 154
Figure D.16 – Common instance template for air blast breaker with 3 insulating stacks
on one base, 1 mechanism, double breaks . 155
Figure D.17 – Common instance template for air blast breaker with 9 insulating stacks
on 3 bases, 3 mechanisms, 6 breaks . 156
Figure E.1 – Information exchange for asset replacement . 158
Figure E.2 – Information exchange for asset condition data . 159
Figure E.3 – Information exchange for operational analytics . 160
Figure F.1 – Diagram illustrating objects instantiated for lab testing . 162
Figure F.2 – Typical message exchanges for ad-hoc measurements . 163
Figure F.3 – Objects instantiated for DGA monitoring. 164
Figure F.4 – Message exchanges for online measurements . 165
Figure G.1 – Illustrative analytics information exchange . 167

Table 1 – Document overview for IEC 61968-4 . 11
Table 2 – Business functions and abstract components . 18
Table A.1 – Normative definitions of verbs . 120
Table D.1 – Salient characteristics for each transmission breaker family . 145

– 8 – IEC 61968-4:2019  IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
APPLICATION INTEGRATION AT ELECTRIC UTILITIES –
SYSTEM INTERFACES FOR DISTRIBUTION MANAGEMENT –

Part 4: Interfaces for records and asset management

FOREWORD
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International Standard IEC 61968 has been prepared by subcommittee IEC technical
committee 57: Power systems management and associated information exchange.
This second edition cancels and replaces the first edition published in 2007. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) removal of edition 1 profiles whose functionality has been superseded by other parts of
IEC 61970 and IEC 61968 standards. In particular, NetworkDataSet and ChangeSet have
been superseded by standards such as CDPSM (IEC 61968-13) and other ongoing efforts
such as change modelling; and Presentation has been superseded by Diagram Layout
Profile (IEC 61970-453);
b) revision of the edition 1 profiles AssetList, AssetCatalogue and TypeAssetCatalogue to
realign with current use cases and the latest CIM UML release. These profiles are based

on an old version of CIM UML and many of the classes in these profiles are no longer in
the recent CIM UMLs;
c) addition of several new profiles to enable the exchange of asset condition data, analytics
results and alerts, assets' physical, functional and lifecycle details, and assets' work;
d) informative annexes on how this document can be used to enable strategic asset
management;
e) informative annexes with illustrative examples for the application of this document;
f) scope coordinated with IEC 61968-13 where applicable;
g) use cases in IEC 62559-2 use case template;
h) traceability of use cases to IEC 62913-2-1 use cases.
The text of this International Standard is based on the following documents:
FDIS Report on voting
57/2059/FDIS 57/2074/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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.
– 10 – IEC 61968-4:2019  IEC 2019
INTRODUCTION
The IEC 61968 standard series, taken as a whole, defines interfaces for the major elements of
an interface architecture for Distribution Management Systems (DMS). IEC 61968-1, Interface
architecture and general recommendations, identifies and establishes requirements for
standard interfaces based on an Interface Reference Model (IRM). IEC 61968-3 to -9 define
interfaces relevant to each of the major business functions described by the Interface
Reference Model.
As used in IEC 61968, a DMS consists of various distributed application components for the
utility to manage electrical distribution networks. These capabilities include monitoring and
control of equipment for power delivery, management processes to ensure system reliability,
v
...