IEC 61968-6:2015

Application integration at electric utilities - System interfaces for distribution management - Part 6: Interfaces for maintenance and construction

IEC 61968-6:2015 specifies the information content of a set of message types that can be used to support business functions related to maintenance and construction. Typical uses of the message types defined in this part of IEC 61968 include planned maintenance, unplanned maintenance, conditional maintenance, work management, new service requests, etc. Message types defined in other parts of IEC 61968 may also be relevant to these use cases.

Intégration d'applications pour les services électriques - Interfaces système pour la gestion de distribution - Partie 6: Interfaces de maintenance et de construction

L'IEC 61968-6:2015 spécifie le contenu informatif d'un ensemble de types de messages qui peut être utilisé pour prendre en charge les fonctions métier liées à la Maintenance et la Construction. En règle générale, l'utilisation des types de messages définis dans cette partie de l'IEC 61968 inclut la maintenance planifiée, la maintenance non planifiée, la maintenance conditionnelle, la gestion des travaux, les nouvelles demandes de service, etc. Les types de messages définis dans les autres parties de l'IEC 61968 peuvent également être pertinents dans ces cas d'utilisation.

General Information

• Status: Published
• Publication Date: 06-Jul-2015
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: TC 57 - Power systems management and associated information exchange
• Drafting Committee: WG 14 - TC 57/WG 14
• Current Stage: PPUB - Publication issued
• Start Date: 07-Jul-2015
• Completion Date: 31-Jul-2015

Overview

IEC 61968-6:2015 - part of the IEC 61968 series - defines system interfaces for maintenance and construction in electric utility distribution management. It specifies the information content of message types used to support business functions such as planned maintenance, unplanned and conditional maintenance, work management, new service requests, meter installation/removal and related field activities. The standard is implementation‑independent and focuses on application integration at electric utilities to enable interoperability between distributed systems (DMS, work management, asset management, field recording, etc.).

Key topics and requirements

• Message definitions: Standardized message types including WorkRequest, ServiceOrder, MaintenanceOrder and related verbs (Annex A). These message types specify information content and usage patterns.
• Reference and information models: Uses an Interface Reference Model (IRM) and static information classes to map maintenance and construction business components (e.g., GINV, MAI, SCHD, FRD).
• XML payloads: Normative XML Schemas for message payloads are provided (Annex B) to support consistent data exchange between systems.
• UML diagrams and formats: UML diagrams and message format conventions are included to clarify structure and semantics.
• Scope of exchange: Focused on inter‑application interfaces (enterprise integration) - the standard defines what data is exchanged, not how it is transported or implemented.
• Use case alignment: Examples and end‑to‑end business cases (e.g., planned maintenance with temporary equipment, meter installation/removal, maintenance requested by field recording) illustrate practical message flows.

Applications and who uses it

IEC 61968-6 is intended for organizations and professionals involved in utility IT and operational integration:

• Utility architects and integrators implementing DMS, work management and asset management integration
• Software vendors building OMS/WMS/Field Force applications that must interoperate with enterprise systems
• System integrators and consultants delivering integration projects that require standardized message exchange
• Operations and planning teams aligning business workflows (maintenance scheduling, service orders, field crews) across systems

Typical applications include automated work dispatch, service order lifecycle management (meter work, new service), planned/unplanned maintenance coordination, and exchanging maintenance status between field systems and enterprise applications.

Related standards

• IEC 61968-1 (Interface architecture and general recommendations) - provides the IRM and general integration guidance.
• Other parts of IEC 61968 (Parts 3–9) - define interfaces for additional distribution management functions that may interact with maintenance and construction message types.

Keywords: IEC 61968-6:2015, maintenance and construction interfaces, distribution management, work management, message types, XML schemas, application integration at electric utilities, DMS integration.

Standards Content (Sample)

IEC 61968-6 ®
Edition 1.0 2015-07
INTERNATIONAL
STANDARD
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Application integration at electric utilities – System interfaces for distribution
management –
Part 6: Interfaces for maintenance and construction
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IEC 61968-6 ®
Edition 1.0 2015-07
INTERNATIONAL
STANDARD
colour
inside
Application integration at electric utilities – System interfaces for distribution

management –
Part 6: Interfaces for maintenance and construction

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-2751-0

– 2 – IEC 61968-6:2015 © IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviations . 9
3.1 Terms and definitions . 9
3.2 Abbreviations . 9
4 Reference and information models . 9
4.1 General . 9
4.2 Reference model . 10
4.2.1 General . 10
4.2.2 Geographical Inventory (GINV) . 12
4.2.3 Maintenance and Inspection (MAI) . 12
4.2.4 Construction . 12
4.2.5 Design . 12
4.2.6 Work Scheduling and Dispatching (SCHD) . 12
4.2.7 Field Recording (FRD) . 12
4.2.8 Network Operation Simulation (SIM) . 12
4.2.9 Customer Service (CS) . 12
4.2.10 Trouble call management (TCM) . 12
4.2.11 Financial (FIN) . 13
4.2.12 Human resources . 13
4.2.13 Asset Management (AM) System . 13
4.2.14 Network Operations (NO). 13
4.3 Interface reference model . 13
4.4 Maintenance and construction functions and components . 14
4.5 Static information model . 14
4.5.1 Information model classes . 14
4.5.2 Classes for maintenance and construction . 14
4.6 Maintenance and construction use cases . 15
5 Maintenance and construction message types . 16
5.1 General . 16
5.2 Work . 17
5.3 Work request message . 17
5.3.1 General . 17
5.3.2 Applications – Carry out planned maintenance with temporary
equipment. 17
5.3.3 Message format . 19
5.4 Service order message . 20
5.4.1 General . 20
5.4.2 Applications – Meter installation and removal . 20
5.4.3 Message format . 21
5.5 Maintenance order message . 23
5.5.1 General . 23
5.5.2 Applications . 23
5.5.3 Message format . 24

6 Document conventions . 26
6.1 UML diagrams. 26
6.2 Message definitions . 26
6.2.1 General . 26
6.2.2 Mandatory versus optional . 26
Annex A (normative) Description of message type verbs . 27
Annex B (normative) XML Schemas for Message Payloads . 29
B.1 General . 29
B.2 WorkRequest . 29
B.3 ServiceOrder . 50
B.4 MaintenanceOrder . 91
Bibliography . 143

Figure 1 – Asset life cycle . 10
Figure 2 – IEC 61968-6 reference model for maintenance . 11
Figure 3 – End-to-end business cases and related messages . 16
Figure 4 – Carry out planned maintenance with temporary equipment . 18
Figure 5 – Work request message format . 19
Figure 6 – Meter installation and removal . 20
Figure 7 – Service order message format . 22
Figure 8 – Maintenance of high voltage device (transformer etc) requested by FRD. 24
Figure 9 – MaintenanceOrder message format . 25

Table 1 – Document overview for IEC 61968-6 . 7
Table 2 – Business functions and abstract components . 14
Table 3 – Maintenance and construction classes . 15
Table A.1 – Commonly used verbs . 27

– 4 – IEC 61968-6:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
APPLICATION INTEGRATION AT ELECTRIC UTILITIES –
SYSTEM INTERFACES FOR DISTRIBUTION MANAGEMENT –

Part 6: Interfaces for maintenance and construction

FOREWORD
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This part of International Standard IEC 61968 has been prepared by IEC technical
committee 57: Power systems management and associated information exchange.
The text of this standard is based on the following documents:
FDIS Report on voting
57/1566/FDIS 57/1586/RVD
Full information on the voting for the approval of this standard 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 parts in the IEC 61968 series, published under the general title Application
integration at electric utilities – System interfaces for distribution management, can be found
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– 6 – IEC 61968-6:2015 © IEC 2015
INTRODUCTION
The IEC 61968 standard, 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 of this
standard 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,
voltage management, demand-side management, outage management, work management,
automated mapping and facilities management.
This set of standards is limited to the definition of interfaces and is implementation
independent. They provide for interoperability among different computer systems, platforms,
and languages. Methods and technologies used to implement functionality conforming to
these interfaces are considered outside of the scope of these standards; only the interface
itself is specified in these standards.
The purpose of this part of IEC 61968 is to define a standard for the integration of
Maintenance and Construction Systems (MC), which would include Work Management
Systems, with other systems and business functions within the scope of IEC 61968. The
scope of this standard is the exchange of information between Maintenance and Construction
Systems and other systems within the utility enterprise. The specific details of communication
protocols those systems employ are outside the scope of this standard. Instead, this standard
will recognize and model the general capabilities that can be potentially provided by
maintenance and construction systems including planned, unplanned and conditional
maintenance. In this way, this standard will not be impacted by the specification, development
and/or deployment of next generation maintenance systems, either through the use of
standards or proprietary means.
The IEC 61968 series of standards is intended to facilitate inter-application integration as
opposed to intra-application integration. Intra-application integration is aimed at programs in
the same application system, usually communicating with each other using middleware that is
embedded in their underlying runtime environment, and tends to be optimised for close, real-
time, synchronous connections and interactive request/reply or conversation communication
models. IEC 61968, by contrast, is intended to support the inter-application integration of a
utility enterprise that needs to connect disparate applications that are already built or new
(legacy or purchased applications), each supported by dissimilar runtime environments.
Therefore, these interface standards are relevant to loosely coupled applications with more
heterogeneity in languages, operating systems, protocols and management tools. This series
of standards is intended to support applications that need to exchange data every few
seconds, minutes, or hours rather than waiting for a nightly batch run. This series of
standards, which are intended to be implemented with middleware services that exchange
messages among applications, will complement, not replace, utility data warehouses,
database gateways, and operational stores.
As used in IEC 61968, a Distribution Management System (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, voltage management, demand-side
management, outage management, work management, automated mapping and facilities
management. Standard interfaces are defined for each class of applications identified in the
Interface Reference Model (IRM), which is described in IEC 61968-1, Interface architecture
and general recommendations.
This part of IEC 61968 contains the clauses listed in Table 1.
Table 1 – Document overview for IEC 61968-6
Clause Title Purpose
1 Scope The scope and purpose of the document are described.
2 Normative references Documents that contain provisions which, through reference
in this text, constitute provisions of this International
Standard.
3 Reference and information Description of general approach to work management
models system, reference model, use cases, interface reference
model, maintenance and construction functions and
components, message type terms and static information
model.
4 Maintenance and construction Message types related to the exchange of information for
message types documents related to maintenance and construction.
Annex A Message type verbs Description of the verbs that are used for the message
types.
Annex B XML schemas for message To provide xsd information for use by developers to create
payloads IEC 61968-9 messages.

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APPLICATION INTEGRATION AT ELECTRIC UTILITIES –
SYSTEM INTERFACES FOR DISTRIBUTION MANAGEMENT –

Part 6: Interfaces for maintenance and construction

1 Scope
This part of IEC 61968 specifies the information content of a set of message types that can be
used to support business functions related to Maintenance and Construction. Typical uses of
the message types defined in this part of IEC 61968 include planned maintenance, unplanned
maintenance, conditional maintenance, work management, new service requests, etc.
Message types defined in other parts of IEC 61968 may also be relevant to these use cases.
The mapping of these messages to specific technologies such as XML will be described at a
later date.
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 60050, International Electrotechnical Vocabulary
IEC 61968-1, Application integration at electric utilities – System interfaces for distribution
management – Part 1: Interface architecture and general recommendations
IEC TS 61968-2, Application integration at electric utilities – System interfaces for distribution
management – Part 2: Glossary
IEC 61968-4, Application integration at electric utilities – System interfaces for distribution
management – Part 4: Interfaces for records and asset management
IEC 61968-9:2013, Application integration at electric utilities – System interfaces for
distribution management – Part 9: Interfaces for meter reading and control
IEC 61968-11, Application integration at electric utilities – System interfaces for distribution
management – Part 11: Common information model (CIM) extensions for distribution
IEC 61970-301, Energy management system application program interface (EMS-API) – Part
301: Common information model (CIM) base
IEC TR 62051, Electricity metering – Glossary of terms
IEC 62055-31, Electricity metering – Payment systems – Part 31: Particular requirements –
Static payment meters for active energy (classes 1 and 2)

3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this standard, the terms and definitions given in IEC 60050-300, IEC TS
61968-2, IEC TR 62051, IEC 62055-31 and the following terms apply.
Where there is a difference between the definitions in this standard and those contained in
other referenced IEC standards, then those defined in IEC 61968-2 shall take precedence
over the others listed, and those defined in IEC 61968-6 shall take precedence over those
defined in IEC 61968-2.
3.2 Abbreviations
AM Asset Management
CIM Common Information Model
NO Network Operations
OMS Outage Management System
WM Work Management
GINV Geographical Inventory
MAI Maintenance & Inspection
CON Construction
DGN Design
SCHD Work Scheduling and Dispatching
FRD Field Recording
NE Network Extension Planning
TCM Trouble Call Management
MR&C Meter Read and Control
CS Customer Services
HR Human Resources
FIN Financials
4 Reference and information models
4.1 General
The message types defined in this document are based on a logical partitioning of the DMS
business functions and components called the IEC 61968 Interface Reference Model.
Figure 1 provides an overview diagram which puts Maintenance and Construction as well as
Work Management in context of Enterprise Asset Management. The diagram demonstrates
the relationship between asset and power system resource. It also relates Work to the
construction process (when new asset is built) and to the maintenance process (when
inspection or repair is performed on the existing asset).

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IEC
Figure 1 – Asset life cycle
The contents of the message types are based on a static information model to ensure
consistency of field names and data types. Each message type is defined as a set of fields
copied from the information model classes in IEC 61968-11. The message types defined in
this standard are intended to satisfy a majority of typical applications. In some particular
project implementations, it may be desirable to modify the set of fields using a methodology
such as that described in IEC 61968-1.
4.2 Reference model
4.2.1 General
The diagram shown in Figure 2 serves as reference model and provides example of the
logical components and data flows related to this International Standard. Subclause 4.5.2
provides references to terms that are defined by the CIM.
The diagram in Figure 2 describes the flows between the components in the reference model.
The numbers in brackets provide linkages to the flow definitions. As per the title of Figure 2,
this reference model includes only a subset of all maintenance and construction functions.
The rest of the functions, especially functions related to Construction, will be included in
future editions of this standard.

Geographical Inventory
(GINV)
General Inventory
Records & Asset Management
Management (AM) (AM-GIM)
Network Monitoring
[ 9 ]
Materials Inventory
Substation & Network
NO-NMON
Inventory (EINV)
[ 20 ]
[ 4 ]
Work Scheduling
[ 1 ]
& Dispatching
[ 12 ]
[ 7 ]
(MC-SCHD)
[ 6 ]
[ 11 ]
[ 16 ]
Work Planning
[ 10 ] [ 12 ]
[ 18 ]
[ 3 ]
[ 13 ]
Preventive Maintenance
[ 10 ]
Maintenance and Inspection Work Scheduling
(MC-MAI) & Dispatching Work Scheduling Field Recording
(MC-SCHD) [ 13 ] & Dispatching (MC-FRD)
(MC-SCHD) Mobile Workforce
Crew Management
[ 5 ]
[ 2 ]
[ 8 ]
[ 10 ]
[ 22 ] [ 17 ]
Operational
Customer Support Planning &
Network Operations Meter Reading &
Optimization
(CS)
Fault Management
Control
Customer Service Network Operation
(NO-FLT) (MR&C)
CSRV Simulation
(OP-SIM)
[ 21 ]
{ 15 }
[ 14 ]
{ 19 }
[ 11 ] Available / Used Materials
[ 1 ] SCADA Measurements, failures, conditions
Key [ 12 ] Bill Of Materials / Material Status
[ 2 ] Switching Plan
[ 13 ] Crew Composition
[ 3 ] Request for Service
61968 Part 6
[ 14 ] Actual Labor Cost
[ 4 ] Materials Reservation
Defined by other 61968 Parts
[ 15 ] Failure Event
[ 5 ] Request for Planned Maintenance/Inspection Work
[ 16 ] New/Updated or get Asset
[ 6 ] Request for Unplanned Work
[ 17 ] Special Read Request / Response
[ 7 ] Follow-up Work
[ 18 ] Install, Remove, Repair, Connect and Disconnect
[ 8 ] Switching Order
[ 19 ] Meter History
[ 9] Work Request from Network Operations
[ 20 ] Map
[10 ] Work Order
[ 21 ] Outage Notification from Field Crew
IEC
[ 22 ] Outage Confirmation Request

Figure 2 – IEC 61968-6 reference model for maintenance
The reference architecture reflects several main logical components (potentially realized as
systems or subsystems) related to maintenance:
a) Geographical Inventory (GINV)
b) Maintenance and Inspection (MAI)
c) Construction (CON)
d) Design (DGN)
e) Work Scheduling and Dispatching (SCHD)
f) Field Recording (FRD)
g) Asset Management System (AM)
h) Network Operations Simulation (SIM)
i) Network Operations (NO)
j) Network Extension Planning (NE)
k) Trouble Call Management (TCM)
l) Meter Read and Control (MR&C)
m) Customer Service (CS)
n) Human Resources (HR)
o) Materials Management System
p) Financial System (FIN)
– 12 – IEC 61968-6:2015 © IEC 2015
4.2.2 Geographical Inventory (GINV)
Management of geospatial data, typically by utilizing computer graphics technology to enter,
store, and update graphic and non-graphic information. Geographic depictions and related
non-graphic data elements for each entity are typically stored some form of a database. The
graphic representations are referenced using a coordinate system that relates to locations on
the surface of the earth. Information in the database can be queried and displayed based
upon either the graphic or non-graphic attributes of the entities.
4.2.3 Maintenance and Inspection (MAI)
Work involving inspection, cleaning, adjustment, or other service of equipment to enable it to
perform better or to extend its service life. Examples of maintenance work are routine oil
changes and painting. Examples of inspection work are pole inspections, vault inspections,
and substation inspections.
4.2.4 Construction
Examples of construction work include service installations, line extensions, and system
betterment projects.
4.2.5 Design
A design is created by an engineer or work planner using the Design and Estimation System
(DGN). Designs can be made up of individual line items or by a set of “Compatible Units” or
CUs. Line items and Compatible Units are associated with a Design Location which is
associated with the Location object in the CIM.
4.2.6 Work Scheduling and Dispatching (SCHD)
Work scheduling and dispatching makes it possible, for a defined scope of work, to assign the
required resources and keep track of work progress.
4.2.7 Field Recording (FRD)
Field recording is often accomplished through hand held devices which allow field personnel
to view and enter information relevant to the work they are performing in the field. For
example, line crews and servicemen can access their respective district maps, do searches
by pole number, substation, transformer number, switch numbers, and feeder names.
4.2.8 Network Operation Simulation (SIM)
This set of functions allows facilities to define, prepare and optimise the sequence of
operations required for carrying out maintenance work on the system (release/clearance
orders) and operational planning.
4.2.9 Customer Service (CS)
This function set covers the different aspects related to customer interfaces required for
operation and commercial purposes.
4.2.10 Trouble call management (TCM)
Customer troubles related to blackouts are then transmitted and compared with network data
in order to provide accurate information on the incident.

4.2.11 Financial (FIN)
Financial performance across the whole organization, which includes the evaluation of
investments in capital projects, maintenance, or operations. These processes include risk and
benefit costs and impact on levels of service.
4.2.12 Human resources
Human resource information contains personnel information for each employee. It includes
such data as job code, employee status, department or place in the organisation, and job-
related skills. This information is often needed and updated by work and project management-
oriented business sub-functions.
4.2.13 Asset Management (AM) System
Utilities will employ some form of asset management software in an effort to maintain detailed
records regarding their physical assets. Asset management is treated categorically in
IEC 61968-4.
4.2.14 Network Operations (NO)
This function provides utilities for supervising main substation topology (breaker and switch
state) and control equipment status. It also provides the utilities for handling network
connectivity and loading conditions. It also makes it possible to locate customer telephone
complaints and supervise the location of field crews.
4.3 Interface reference model
It is not the intention of this standard to define the applications and systems that vendors
should produce. It is expected that a concrete (physical) application will provide the
functionality of one or more abstract (logical) components as listed in this standard. These
abstract components are grouped by the business functions of the Interface Reference Model.
In this standard, the term abstract component is used to refer to that portion of a software
system that supports one or more of the interfaces defined in IEC 61968-3 to -9 and
IEC 61968-13. It does not necessarily mean that compliant software is delivered either as separate
modules or as a single system.
IEC 61968-1 describes infrastructure services common to all abstract components while IEC
61968-3 to -9 and -13 define the details of the information exchanged for specific types of
abstract component.
IEC 61968 defines that:
a) An inter-application infrastructure is compliant if it supplies services defined in IEC 61869-
1 to support at least two applications with interfaces compliant to sections of IEC 61968-3
to -9 and -13.
b) An application interface is compliant if it supports the interface standards defined in IEC
61968-3 to -9 and -13 for the relevant abstract components defined in the Interface
Reference Model.
c) An application is only required to support interface standards of the applicable
components listed under abstract components. An application is not required to support
interfaces required by other abstract components of the same business sub-function or
within the same business function. While this standard primarily defines information
exchanged among components in different business functions, it will occasionally also
define information exchanged among components within a single business function when
a strong market need for this capability has been realised.

– 14 – IEC 61968-6:2015 © IEC 2015
4.4 Maintenance and construction functions and components
The following table shows those functions and typical components that are applicable to the
message types defined in this document: IEC 61968-6: Interfaces for maintenance and
construction.
For the message types defined in this document, it is expected that the typical abstract
components listed in Table 2 will be producers of information. Typical consumers of the
information are the other components as listed in IEC 61968-1.
Table 2 – Business functions and abstract components
Business functions Business Abstract components
sub-functions
Maintenance and Construction Maintenance and Inspection Maintenance Orders
(MC) (MAI)
Maintenance Rules
Inspection/Maintenance History
Work Procedures
Construction (CON) Work Flow
Cost Reconciliation
Work Approval
Permits
Customer Billing
Tracking
Project Costing
Design (DGN) Construction Engineering
Estimating
Bill of Materials
Compatible Units
Field Recording (FRD) As-built Reporting
Time Reporting
Asset Condition
Scheduling and Dispatching Resource Management
(SCHD)
Work Planning
Work Allocation
Material Requisitioning
4.5 Static information model
4.5.1 Information model classes
The information model relevant to records and asset management consists of classes that
provide a template for the attributes for each message. The classes are defined in detail in
IEC 61968-11 or 61970-301.
4.5.2 Classes for maintenance and construction
Table 3 lists classes that are used within message types. All of the attributes of these classes
are contained within a message type.

Table 3 – Maintenance and construction classes
Class name Class description
Asset Tangible resource of the utility, including power system equipment, various end devices,
cabinets, buildings, etc. For electrical network equipment, the role of the asset is defined
through PowerSystemResource and its subclasses, defined mainly in the Wires model (refer
to IEC61970-301 and model package IEC61970::Wires). Asset description places emphasis
on the physical characteristics of the equipment fulfilling that role.

WorkAsset Asset used to perform work.
ProcedureDataSet A data set recorded each time a procedure is executed. Observed results are captured in
associated measurement values and/or values for properties relevant to the type of procedure
performed
Procedure Documented procedure for various types of work or work tasks on assets.
WorkLocation Information about a particular location for various forms of work.

MaterialItem The physical consumable supply used for work and other purposes. It includes items such as
nuts, bolts, brackets, glue, etc.

Work Document used to request, initiate, track and record work.
Meter Physical asset that performs the metering role of the usage point. Used for measuring
consumption and
detection of events.
BaseWork Common representation for work and work tasks.

WorkTimeSchedul Time schedule specific to work.
e
WorkTask A set of tasks is required to implement a design.

NOTE The class definitions provided here are for convenience purposes only. The normative definitions are
provided by the CIM.
4.6 Maintenance and construction use cases
Continuing the iterative development process IEC 61968-6 has been supporting from the work
management perspective the most common end-to-end business cases:
1) Initialize the network
2) Non-telemetred fuse trips
3) Telemetered breaker trips
4) Tap for new subdivision
5) Maintenance on transformer
6) Meter replacement
IEC 61968-6 has been addressing these use cases and messages in a holistic approach in
collaboration with IEC 61968-3, -4, -9 and -13. The following diagram (see Figure 3) shows
the end-to-end use cases and messages and expresses the required interaction between
different parts of IEC 61968.
IEC 61968-6 has concentrated on work management use cases such as Maintenance of
transformer and Meter Replacement (see red circles). Following this proposed interative
process, the most important messages in these use cases: WorkRequest, MaintenanceOrder,
ServiceOrder and SwitchingOrder have been addressed first and presented in this document.

– 16 – IEC 61968-6:2015 © IEC 2015

IEC
Figure 3 – End-to-end business cases and related messages
Clause 5 provides more detailed use cases for a specific interaction such as meter
replacement or transformer repair. For these use cases, messages have been developed and
presented along with the use case.
5 Maintenance and construction message types
5.1 General
The purpose of this section is to describe the message types related to IEC 61968-6. It is
important to note that some of these message types may also be used by other parts of
IEC 61968. The general approach to the realization of message structures and XML schemas
for IEC 61968 messages is described in IEC 61968-1.
Although they may be represented in sequence diagrams for context and completeness, this
document does not describe message formats that are defined by other parts of IEC 61968.
The key message payload structures defined by this part of IEC 61968 refer to work related
business processes such as:
• Requesting Work
• Work Scheduling and Dispatching
• Work Execution
• Work Closing
Work scheduling of an unplanned work includes work planning, materials reservation,
composing the crew and obtaining the relevant permits if required. Upon planning the work,
the work can be dispatched for execution.
The normative XML schemas for messages defined by this part are provided in Annex B,
providing more detailed, annotated descriptions of the message structures. Message

structures are also diagrammed within this section. The notation convention shows required
elements with a solid outline, and option elements with dashed outlines.
It is also important to note that the use cases and sequence diagrams provided in this section
are informative in nature, and are intended to provide examples of usage for the normative
messages definitions. There is no intent by this standard to standardize specific business
processes.
5.2 Work
Work is created any time a person is required to perform an activity related to company
assets. Examples of work include:
• Construction work (e.g. service installations, line extensions, and system betterment
projects)
• Service work (e.g meter replacements, Turn-on, Turn-off, "switch replacement", "pole
replacement" etc.)
• Maintenance work (e.g. routine oil changes, painting, "forest thinning", "switch maintenance",
"battery replacement", etc.)
• Inspection or diagnosis work (e.g. pole inspections, vault inspections, Substation
inspections, "identifying areas for forest thinning", "MV/LV substation visit", "ground
measurement", "manual switch testing")
• Trouble work (e.g. Power outage, voltage quality problem, etc.)
Each type of work may have references to other CIM objects based on the type of work. For
example, Maintenance work may not have a reference to a customer and construction work
will most likely not have a cross reference to an unplanned outage.
5.3 Work request message
5.3.1 General
Request for new work can come from various sources:
1) Requests for work can come from any Network Operation systems. These are the systems
that operate an asset (Distribution Management System, Outage Management System
etc.). These requests for work can be: Emergency Maintenance (EM) and
Corrective/Repair Maintenance (CM)
2) Requests for work can come from Maintenance system itself which creates a Job Plan for
inspection and maintenance of an asset after an asset is registered. This maintenance is
generally called:
a) Preventive maintenance (PM)
b) Conditional based maintenance
3) Requests for work can also come from the Asset Design system that designs new
plant/equipment or modifies and old plant as result of engineering requests:
Capital (CAP) work or Modified (MOD) work
5.3.2 Applications – Carry out planned maintenance with temporary equipment
Request for work is triggered by maintenance and inspection, or by periodic schedule for
work. Example activity is tree trimming, which requires two cuts and a temporary generator or
major maintenance on a power transformer where temporary facility is required.
Maintenance and inspection (can be asset managem
...

IEC 61968-6 ®
Edition 1.0 2015-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Application integration at electric utilities – System interfaces for distribution
management –
Part 6: Interfaces for maintenance and construction

Intégration d'applications pour les services électriques – Interfaces système
pour la gestion de distribution –
Partie 6: Interfaces de maintenance et de construction

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IEC 61968-6 ®
Edition 1.0 2015-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Application integration at electric utilities – System interfaces for distribution

management –
Part 6: Interfaces for maintenance and construction

Intégration d'applications pour les services électriques – Interfaces système

pour la gestion de distribution –

Partie 6: Interfaces de maintenance et de construction

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.200 ISBN 978-2-8322-3257-6

– 2 – IEC 61968-6:2015 © IEC 2015
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references. 8
3 Terms, definitions and abbreviations . 9
3.1 Terms and definitions . 9
3.2 Abbreviations . 9
4 Reference and information models . 9
4.1 General . 9
4.2 Reference model . 10
4.2.1 General . 10
4.2.2 Geographical Inventory (GINV) . 12
4.2.3 Maintenance and Inspection (MAI) . 12
4.2.4 Construction . 12
4.2.5 Design . 12
4.2.6 Work Scheduling and Dispatching (SCHD) . 12
4.2.7 Field Recording (FRD) . 12
4.2.8 Network Operation Simulation (SIM) . 12
4.2.9 Customer Service (CS) . 12
4.2.10 Trouble call management (TCM) . 12
4.2.11 Financial (FIN) . 13
4.2.12 Human resources . 13
4.2.13 Asset Management (AM) System . 13
4.2.14 Network Operations (NO) . 13
4.3 Interface reference model . 13
4.4 Maintenance and construction functions and components . 14
4.5 Static information model . 14
4.5.1 Information model classes . 14
4.5.2 Classes for maintenance and construction . 14
4.6 Maintenance and construction use cases . 15
5 Maintenance and construction message types . 16
5.1 General . 16
5.2 Work . 17
5.3 Work request message . 17
5.3.1 General . 17
5.3.2 Applications – Carry out planned maintenance with temporary
equipment . 17
5.3.3 Message format . 19
5.4 Service order message . 20
5.4.1 General . 20
5.4.2 Applications – Meter installation and removal . 20
5.4.3 Message format . 21
5.5 Maintenance order message . 23
5.5.1 General . 23
5.5.2 Applications . 23
5.5.3 Message format . 24

6 Document conventions . 26
6.1 UML diagrams . 26
6.2 Message definitions . 26
6.2.1 General . 26
6.2.2 Mandatory versus optional . 26
Annex A (normative) Description of message type verbs . 27
Annex B (normative) XML Schemas for Message Payloads . 29
B.1 General . 29
B.2 WorkRequest . 29
B.3 ServiceOrder . 50
B.4 MaintenanceOrder . 91
Bibliography . 143

Figure 1 – Asset life cycle . 10
Figure 2 – IEC 61968-6 reference model for maintenance . 11
Figure 3 – End-to-end business cases and related messages . 16
Figure 4 – Carry out planned maintenance with temporary equipment . 18
Figure 5 – Work request message format . 19
Figure 6 – Meter installation and removal . 20
Figure 7 – Service order message format . 22
Figure 8 – Maintenance of high voltage device (transformer etc) requested by FRD . 24
Figure 9 – MaintenanceOrder message format . 25

Table 1 – Document overview for IEC 61968-6 . 7
Table 2 – Business functions and abstract components . 14
Table 3 – Maintenance and construction classes . 15
Table A.1 – Commonly used verbs . 27

– 4 – IEC 61968-6:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
APPLICATION INTEGRATION AT ELECTRIC UTILITIES –
SYSTEM INTERFACES FOR DISTRIBUTION MANAGEMENT –

Part 6: Interfaces for maintenance and construction

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
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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.
This part of International Standard IEC 61968 has been prepared by IEC technical
committee 57: Power systems management and associated information exchange.
This bilingual version (2016-08) corresponds to the monolingual English version, published in
2015-07.
The text of this standard is based on the following documents:
FDIS Report on voting
57/1566/FDIS 57/1586/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.

The French version of this standard has not been voted upon.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 61968 series, published under the general title Application
integration at electric utilities – System interfaces for distribution management, 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 website 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.
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.
– 6 – IEC 61968-6:2015 © IEC 2015
INTRODUCTION
The IEC 61968 standard, 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 of this
standard 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,
voltage management, demand-side management, outage management, work management,
automated mapping and facilities management.
This set of standards is limited to the definition of interfaces and is implementation
independent. They provide for interoperability among different computer systems, platforms,
and languages. Methods and technologies used to implement functionality conforming to
these interfaces are considered outside of the scope of these standards; only the interface
itself is specified in these standards.
The purpose of this part of IEC 61968 is to define a standard for the integration of
Maintenance and Construction Systems (MC), which would include Work Management
Systems, with other systems and business functions within the scope of IEC 61968. The
scope of this standard is the exchange of information between Maintenance and Construction
Systems and other systems within the utility enterprise. The specific details of communication
protocols those systems employ are outside the scope of this standard. Instead, this standard
will recognize and model the general capabilities that can be potentially provided by
maintenance and construction systems including planned, unplanned and conditional
maintenance. In this way, this standard will not be impacted by the specification, development
and/or deployment of next generation maintenance systems, either through the use of
standards or proprietary means.
The IEC 61968 series of standards is intended to facilitate inter-application integration as
opposed to intra-application integration. Intra-application integration is aimed at programs in
the same application system, usually communicating with each other using middleware that is
embedded in their underlying runtime environment, and tends to be optimised for close, real-
time, synchronous connections and interactive request/reply or conversation communication
models. IEC 61968, by contrast, is intended to support the inter-application integration of a
utility enterprise that needs to connect disparate applications that are already built or new
(legacy or purchased applications), each supported by dissimilar runtime environments.
Therefore, these interface standards are relevant to loosely coupled applications with more
heterogeneity in languages, operating systems, protocols and management tools. This series
of standards is intended to support applications that need to exchange data every few
seconds, minutes, or hours rather than waiting for a nightly batch run. This series of
standards, which are intended to be implemented with middleware services that exchange
messages among applications, will complement, not replace, utility data warehouses,
database gateways, and operational stores.
As used in IEC 61968, a Distribution Management System (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, voltage management, demand-side
management, outage management, work management, automated mapping and facilities
management. Standard interfaces are defined for each class of applications identified in the
Interface Reference Model (IRM), which is described in IEC 61968-1, Interface architecture
and general recommendations.
This part of IEC 61968 contains the clauses listed in Table 1.
Table 1 – Document overview for IEC 61968-6
Clause Title Purpose
1 Scope The scope and purpose of the document are described.
2 Normative references Documents that contain provisions which, through reference
in this text, constitute provisions of this International
Standard.
3 Reference and information Description of general approach to work management
models system, reference model, use cases, interface reference
model, maintenance and construction functions and
components, message type terms and static information
model.
4 Maintenance and construction Message types related to the exchange of information for
message types documents related to maintenance and construction.
Annex A Message type verbs Description of the verbs that are used for the message
types.
Annex B XML schemas for message To provide xsd information for use by developers to create
payloads IEC 61968-9 messages.

– 8 – IEC 61968-6:2015 © IEC 2015
APPLICATION INTEGRATION AT ELECTRIC UTILITIES –
SYSTEM INTERFACES FOR DISTRIBUTION MANAGEMENT –

Part 6: Interfaces for maintenance and construction

1 Scope
This part of IEC 61968 specifies the information content of a set of message types that can be
used to support business functions related to Maintenance and Construction. Typical uses of
the message types defined in this part of IEC 61968 include planned maintenance, unplanned
maintenance, conditional maintenance, work management, new service requests, etc.
Message types defined in other parts of IEC 61968 may also be relevant to these use cases.
The mapping of these messages to specific technologies such as XML will be described at a
later date.
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 60050, International Electrotechnical Vocabulary
IEC 61968-1, Application integration at electric utilities – System interfaces for distribution
management – Part 1: Interface architecture and general recommendations
IEC TS 61968-2, Application integration at electric utilities – System interfaces for distribution
management – Part 2: Glossary
IEC 61968-4, Application integration at electric utilities – System interfaces for distribution
management – Part 4: Interfaces for records and asset management
IEC 61968-9:2013, Application integration at electric utilities – System interfaces for
distribution management – Part 9: Interfaces for meter reading and control
IEC 61968-11, Application integration at electric utilities – System interfaces for distribution
management – Part 11: Common information model (CIM) extensions for distribution
IEC 61970-301, Energy management system application program interface (EMS-API) – Part
301: Common information model (CIM) base
IEC TR 62051, Electricity metering – Glossary of terms
IEC 62055-31, Electricity metering – Payment systems – Part 31: Particular requirements –
Static payment meters for active energy (classes 1 and 2)

3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this standard, the terms and definitions given in IEC 60050-300, IEC TS
61968-2, IEC TR 62051, IEC 62055-31 and the following terms apply.
Where there is a difference between the definitions in this standard and those contained in
other referenced IEC standards, then those defined in IEC 61968-2 shall take precedence
over the others listed, and those defined in IEC 61968-6 shall take precedence over those
defined in IEC 61968-2.
3.2 Abbreviations
AM Asset Management
CIM Common Information Model
NO Network Operations
OMS Outage Management System
WM Work Management
GINV Geographical Inventory
MAI Maintenance & Inspection
CON Construction
DGN Design
SCHD Work Scheduling and Dispatching
FRD Field Recording
NE Network Extension Planning
TCM Trouble Call Management
MR&C Meter Read and Control
CS Customer Services
HR Human Resources
FIN Financials
4 Reference and information models
4.1 General
The message types defined in this document are based on a logical partitioning of the DMS
business functions and components called the IEC 61968 Interface Reference Model.
Figure 1 provides an overview diagram which puts Maintenance and Construction as well as
Work Management in context of Enterprise Asset Management. The diagram demonstrates
the relationship between asset and power system resource. It also relates Work to the
construction process (when new asset is built) and to the maintenance process (when
inspection or repair is performed on the existing asset).

– 10 – IEC 61968-6:2015 © IEC 2015

IEC
Figure 1 – Asset life cycle
The contents of the message types are based on a static information model to ensure
consistency of field names and data types. Each message type is defined as a set of fields
copied from the information model classes in IEC 61968-11. The message types defined in
this standard are intended to satisfy a majority of typical applications. In some particular
project implementations, it may be desirable to modify the set of fields using a methodology
such as that described in IEC 61968-1.
4.2 Reference model
4.2.1 General
The diagram shown in Figure 2 serves as reference model and provides example of the
logical components and data flows related to this International Standard. Subclause 4.5.2
provides references to terms that are defined by the CIM.
The diagram in Figure 2 describes the flows between the components in the reference model.
The numbers in brackets provide linkages to the flow definitions. As per the title of Figure 2,
this reference model includes only a subset of all maintenance and construction functions.
The rest of the functions, especially functions related to Construction, will be included in
future editions of this standard.

Geographical Inventory
(GINV)
General Inventory
Records & Asset Management
Management (AM) (AM-GIM)
Network Monitoring
[ 9 ]
Materials Inventory
Substation & Network
NO-NMON
Inventory (EINV)
[ 20 ]
[ 4 ]
Work Scheduling
[ 1 ]
& Dispatching
[ 12 ]
[ 7 ]
(MC-SCHD)
[ 6 ]
[ 11 ]
[ 16 ]
Work Planning
[ 10 ] [ 12 ]
[ 18 ]
[ 3 ]
[ 13 ]
Preventive Maintenance
[ 10 ]
Maintenance and Inspection Work Scheduling
(MC-MAI) & Dispatching Work Scheduling Field Recording
(MC-SCHD) [ 13 ] & Dispatching (MC-FRD)
(MC-SCHD) Mobile Workforce
Crew Management
[ 5 ]
[ 2 ]
[ 8 ]
[ 10 ]
[ 22 ] [ 17 ]
Operational
Customer Support Planning &
Network Operations Meter Reading &
Optimization
(CS)
Fault Management Control
Customer Service Network Operation
(NO-FLT) (MR&C)
CSRV Simulation
(OP-SIM)
[ 21 ]
{ 15 }
[ 14 ]
{ 19 }
[ 11 ] Available / Used Materials
[ 1 ] SCADA Measurements, failures, conditions
Key [ 12 ] Bill Of Materials / Material Status
[ 2 ] Switching Plan
[ 13 ] Crew Composition
[ 3 ] Request for Service
61968 Part 6
[ 14 ] Actual Labor Cost
[ 4 ] Materials Reservation
Defined by other 61968 Parts
[ 15 ] Failure Event
[ 5 ] Request for Planned Maintenance/Inspection Work
[ 16 ] New/Updated or get Asset
[ 6 ] Request for Unplanned Work
[ 17 ] Special Read Request / Response
[ 7 ] Follow-up Work
[ 18 ] Install, Remove, Repair, Connect and Disconnect
[ 8 ] Switching Order
[ 19 ] Meter History
[ 9] Work Request from Network Operations
[ 20 ] Map
[10 ] Work Order
[ 21 ] Outage Notification from Field Crew
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[ 22 ] Outage Confirmation Request

Figure 2 – IEC 61968-6 reference model for maintenance
The reference architecture reflects several main logical components (potentially realized as
systems or subsystems) related to maintenance:
a) Geographical Inventory (GINV)
b) Maintenance and Inspection (MAI)
c) Construction (CON)
d) Design (DGN)
e) Work Scheduling and Dispatching (SCHD)
f) Field Recording (FRD)
g) Asset Management System (AM)
h) Network Operations Simulation (SIM)
i) Network Operations (NO)
j) Network Extension Planning (NE)
k) Trouble Call Management (TCM)
l) Meter Read and Control (MR&C)
m) Customer Service (CS)
n) Human Resources (HR)
o) Materials Management System
p) Financial System (FIN)
– 12 – IEC 61968-6:2015 © IEC 2015
4.2.2 Geographical Inventory (GINV)
Management of geospatial data, typically by utilizing computer graphics technology to enter,
store, and update graphic and non-graphic information. Geographic depictions and related
non-graphic data elements for each entity are typically stored some form of a database. The
graphic representations are referenced using a coordinate system that relates to locations on
the surface of the earth. Information in the database can be queried and displayed based
upon either the graphic or non-graphic attributes of the entities.
4.2.3 Maintenance and Inspection (MAI)
Work involving inspection, cleaning, adjustment, or other service of equipment to enable it to
perform better or to extend its service life. Examples of maintenance work are routine oil
changes and painting. Examples of inspection work are pole inspections, vault inspections,
and substation inspections.
4.2.4 Construction
Examples of construction work include service installations, line extensions, and system
betterment projects.
4.2.5 Design
A design is created by an engineer or work planner using the Design and Estimation System
(DGN). Designs can be made up of individual line items or by a set of “Compatible Units” or
CUs. Line items and Compatible Units are associated with a Design Location which is
associated with the Location object in the CIM.
4.2.6 Work Scheduling and Dispatching (SCHD)
Work scheduling and dispatching makes it possible, for a defined scope of work, to assign the
required resources and keep track of work progress.
4.2.7 Field Recording (FRD)
Field recording is often accomplished through hand held devices which allow field personnel
to view and enter information relevant to the work they are performing in the field. For
example, line crews and servicemen can access their respective district maps, do searches
by pole number, substation, transformer number, switch numbers, and feeder names.
4.2.8 Network Operation Simulation (SIM)
This set of functions allows facilities to define, prepare and optimise the sequence of
operations required for carrying out maintenance work on the system (release/clearance
orders) and operational planning.
4.2.9 Customer Service (CS)
This function set covers the different aspects related to customer interfaces required for
operation and commercial purposes.
4.2.10 Trouble call management (TCM)
Customer troubles related to blackouts are then transmitted and compared with network data
in order to provide accurate information on the incident.

4.2.11 Financial (FIN)
Financial performance across the whole organization, which includes the evaluation of
investments in capital projects, maintenance, or operations. These processes include risk and
benefit costs and impact on levels of service.
4.2.12 Human resources
Human resource information contains personnel information for each employee. It includes
such data as job code, employee status, department or place in the organisation, and job-
related skills. This information is often needed and updated by work and project management-
oriented business sub-functions.
4.2.13 Asset Management (AM) System
Utilities will employ some form of asset management software in an effort to maintain detailed
records regarding their physical assets. Asset management is treated categorically in
IEC 61968-4.
4.2.14 Network Operations (NO)
This function provides utilities for supervising main substation topology (breaker and switch
state) and control equipment status. It also provides the utilities for handling network
connectivity and loading conditions. It also makes it possible to locate customer telephone
complaints and supervise the location of field crews.
4.3 Interface reference model
It is not the intention of this standard to define the applications and systems that vendors
should produce. It is expected that a concrete (physical) application will provide the
functionality of one or more abstract (logical) components as listed in this standard. These
abstract components are grouped by the business functions of the Interface Reference Model.
In this standard, the term abstract component is used to refer to that portion of a software
system that supports one or more of the interfaces defined in IEC 61968-3 to -9 and
IEC 61968-13. It does not necessarily mean that compliant software is delivered either as separate
modules or as a single system.
IEC 61968-1 describes infrastructure services common to all abstract components while IEC
61968-3 to -9 and -13 define the details of the information exchanged for specific types of
abstract component.
IEC 61968 defines that:
a) An inter-application infrastructure is compliant if it supplies services defined in IEC 61869-
1 to support at least two applications with interfaces compliant to sections of IEC 61968-3
to -9 and -13.
b) An application interface is compliant if it supports the interface standards defined in IEC
61968-3 to -9 and -13 for the relevant abstract components defined in the Interface
Reference Model.
c) An application is only required to support interface standards of the applicable
components listed under abstract components. An application is not required to support
interfaces required by other abstract components of the same business sub-function or
within the same business function. While this standard primarily defines information
exchanged among components in different business functions, it will occasionally also
define information exchanged among components within a single business function when
a strong market need for this capability has been realised.

– 14 – IEC 61968-6:2015 © IEC 2015
4.4 Maintenance and construction functions and components
The following table shows those functions and typical components that are applicable to the
message types defined in this document: IEC 61968-6: Interfaces for maintenance and
construction.
For the message types defined in this document, it is expected that the typical abstract
components listed in Table 2 will be producers of information. Typical consumers of the
information are the other components as listed in IEC 61968-1.
Table 2 – Business functions and abstract components
Business functions Business Abstract components
sub-functions
Maintenance and Construction Maintenance and Inspection Maintenance Orders
(MC) (MAI)
Maintenance Rules
Inspection/Maintenance History
Work Procedures
Construction (CON) Work Flow
Cost Reconciliation
Work Approval
Permits
Customer Billing
Tracking
Project Costing
Design (DGN) Construction Engineering
Estimating
Bill of Materials
Compatible Units
Field Recording (FRD) As-built Reporting
Time Reporting
Asset Condition
Scheduling and Dispatching Resource Management
(SCHD)
Work Planning
Work Allocation
Material Requisitioning
4.5 Static information model
4.5.1 Information model classes
The information model relevant to records and asset management consists of classes that
provide a template for the attributes for each message. The classes are defined in detail in
IEC 61968-11 or 61970-301.
4.5.2 Classes for maintenance and construction
Table 3 lists classes that are used within message types. All of the attributes of these classes
are contained within a message type.

Table 3 – Maintenance and construction classes
Class name Class description
Asset Tangible resource of the utility, including power system equipment, various end devices,
cabinets, buildings, etc. For electrical network equipment, the role of the asset is defined
through PowerSystemResource and its subclasses, defined mainly in the Wires model (refer
to IEC61970-301 and model package IEC61970::Wires). Asset description places emphasis
on the physical characteristics of the equipment fulfilling that role.

WorkAsset Asset used to perform work.
ProcedureDataSet A data set recorded each time a procedure is executed. Observed results are captured in
associated measurement values and/or values for properties relevant to the type of procedure
performed
Procedure Documented procedure for various types of work or work tasks on assets.
WorkLocation Information about a particular location for various forms of work.

MaterialItem The physical consumable supply used for work and other purposes. It includes items such as
nuts, bolts, brackets, glue, etc.

Work Document used to request, initiate, track and record work.
Meter Physical asset that performs the metering role of the usage point. Used for measuring
consumption and
detection of events.
BaseWork Common representation for work and work tasks.

WorkTimeSchedul Time schedule specific to work.
e
WorkTask A set of tasks is required to implement a design.

NOTE The class definitions provided here are for convenience purposes only. The normative definitions are
provided by the CIM.
4.6 Maintenance and construction use cases
Continuing the iterative development process IEC 61968-6 has been supporting from the work
management perspective the most common end-to-end business cases:
1) Initialize the network
2) Non-telemetred fuse trips
3) Telemetered breaker trips
4) Tap for new subdivision
5) Maintenance on transformer
6) Meter replacement
IEC 61968-6 has been addressing these use cases and messages in a holistic approach in
collaboration with IEC 61968-3, -4, -9 and -13. The following diagram (see Figure 3) shows
the end-to-end use cases and messages and expresses the required interaction between
different parts of IEC 61968.
IEC 61968-6 has concentrated on work management use cases such as Maintenance of
transformer and Meter Replacement (see red circles). Following this proposed interative
process, the most important messages in these use cases: WorkRequest, MaintenanceOrder,
ServiceOrder and SwitchingOrder have been addressed first and presented in this document.

– 16 – IEC 61968-6:2015 © IEC 2015

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Figure 3 – End-to-end business cases and related messages
Clause 5 provides more detailed use cases for a specific interaction such as meter
replacement or transformer repair. For these use cases, messages have been developed and
presented along with the use case.
5 Maintenance and construction message types
5.1 General
The purpose of this section is to describe the message types related to IEC 61968-6. It is
important to note that some of these message types may also be used by other parts of
IEC 61968. The general approach to the realization of message structures and XML schemas
for IEC 61968 messages is described in IEC 61968-1.
Although they may be represented in sequence diagrams for context and completeness, this
document does not describe message formats that are defined by other parts of IEC 61968.
The key message payload structures defined by this part of IEC 61968 refer to work related
business processes such as:
• Requesting Work
• Work Scheduling and Di
...