Information technology -- Home Electronic System (HES) application model

ISO/IEC TR 15067-3-2:2016(E) This Technical Report is based on work done by the GridWise Architecture Council. It describes a framework for identifying and discussing interoperability issues to facilitate the integration of entities that interact with electric power systems.

Technologies de l'information -- Modèles d'application du système électronique domotique (HES)

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Status
Published
Publication Date
06-Nov-2016
Current Stage
6060 - International Standard published
Start Date
04-Nov-2016
Completion Date
07-Nov-2016
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ISO/IEC TR 15067-3-2
Edition 1.0 2016-11
TECHNICAL
REPORT
colour
inside
Information technology – Home electronic system application model –
Part 3-2: GridWise – Interoperability context-setting framework
ISO/IEC TR 15067-3-2:2016-11(en)
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---------------------- Page: 2 ----------------------
ISO/IEC TR 15067-3-2
Edition 1.0 2016-11
TECHNICAL
REPORT
colour
inside
Information technology – Home electronic system application model –
Part 3-2: GridWise – Interoperability context-setting framework
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200 ISBN 978-2-8322-3722-9

Warning! Make sure that you obtained this publication from an authorized distributor.

---------------------- Page: 3 ----------------------
– 2 – ISO/IEC TR 15067-3-2:2016
© ISO/IEC 2016
CONTENTS

FOREWORD ........................................................................................................................... 4

1 Executive Summary ......................................................................................................... 6

2 Introduction ..................................................................................................................... 9

2.1 Why Develop a Framework? ................................................................................. 11

2.2 Multiple Viewpoints ............................................................................................... 12

2.3 Background........................................................................................................... 13

2.4 Scope ................................................................................................................... 13

2.5 Prerequisites......................................................................................................... 14

2.6 Framework Progression ........................................................................................ 14

2.7 Collaboration Terminology .................................................................................... 15

3 System Integration Philosophy ....................................................................................... 17

3.1 Agreement at the Interface – A Contract ............................................................... 17

3.2 Boundary of Authority ........................................................................................... 17

3.3 Decision Making in Very Large Networks .............................................................. 18

3.4 The Role of Standards .......................................................................................... 19

4 High Level Categorization .............................................................................................. 20

4.1 Technical Aspects ................................................................................................. 21

4.1.1 Category 1: Basic Connectivity ...................................................................... 21

4.1.2 Category 2: Network Interoperability .............................................................. 22

4.1.3 Category 3: Syntactic Interoperability ............................................................ 22

4.2 Informational Aspects ........................................................................................... 23

4.2.1 Category 4: Semantic Understanding ............................................................. 23

4.2.2 Category 5: Business Context ........................................................................ 23

4.3 Organizational Aspects ......................................................................................... 24

4.3.1 Category 6: Business Procedures .................................................................. 24

4.3.2 Category 7: Business Objectives ................................................................... 24

4.3.3 Category 8: Economic and Regulatory Policy ................................................. 25

5 Cross-Cutting Issues ..................................................................................................... 25

5.1 Shared Meaning of Content .................................................................................. 26

5.2 Resource Identification ......................................................................................... 27

5.3 Time Synchronization and Sequencing.................................................................. 27

5.4 Security and Privacy ............................................................................................. 28

5.5 Logging and Auditing ............................................................................................ 28

5.6 Transaction and State Management ...................................................................... 29

5.7 System Preservation ............................................................................................. 29

5.8 Quality of Service ................................................................................................. 29

5.9 Discovery and Configuration ................................................................................. 30

5.10 System Evolution and Scalability .......................................................................... 30

6 Examples of Applying the Framework ............................................................................ 31

7 Governance ................................................................................................................... 31

8 Acknowledgements ........................................................................................................ 32

9 References .................................................................................................................... 32

Appendix A Example Scenarios ........................................................................................... 34

A.1 Residential Demand Response ............................................................................. 34

A.1.1 Mrs. Meg A. Watts Moves In .......................................................................... 34

A.1.2 A Critical Peak Occurs ................................................................................... 35

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ISO/IEC TR 15067-3-2:2016 – 3 –
© ISO/IEC 2016

A.1.3 An Emergency Occurs ................................................................................... 36

A.1.4 Meg and the Framework ................................................................................ 37

A.2 Commercial Building Demand Response ............................................................... 39

A.3 Congestion Management Market ........................................................................... 41

Bibliography .......................................................................................................................... 43

Figure S.1 – A Framework Provides High-Level Perspective ................................................... 7

Figure S.2 – Interoperability Framework Categories ................................................................ 8

Figure S.3 – Interoperability Framework Companion Material .................................................. 9

Figure 1 – Distance to Integrate ............................................................................................ 10

Figure 2 – Interoperability Framework Companion Material ................................................... 14

Figure 3 – Phases for Progressing Interoperability ................................................................ 15

Figure 4 – Collaboration Model Elements .............................................................................. 16

Figure 5 – Interoperability Layered Categories ...................................................................... 21

Figure 6 – Interoperability Context-Setting Framework Diagram ............................................ 26

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– 4 – ISO/IEC TR 15067-3-2:2016
© ISO/IEC 2016
INFORMATION TECHNOLOGY –
HOME ELECTRONIC SYSTEM APPLICATION MODEL –
Part 3-2: GridWise – Interoperability context-setting framework
FOREWORD

1) ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) form the specialized system for worldwide standardization. National bodies that are members of

ISO or IEC participate in the development of International Standards through technical committees established

by the respective organization to deal with particular fields of technical activity. ISO and IEC technical

committees collaborate in fields of mutual interest. Other international organizations, governmental and non-

governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology,

ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.

2) The formal decisions or agreements of IEC and ISO on technical matters express, as nearly as possible, an

international consensus of opinion on the relevant subjects since each technical committee has representation

from all interested IEC National Committees and ISO member bodies.

3) IEC, ISO and ISO/IEC publications have the form of recommendations for international use and are accepted

by IEC National Committees and ISO member bodies in that sense. While all reasonable efforts are made to

ensure that the technical content of IEC, ISO and ISO/IEC publications is accurate, IEC or ISO cannot be held

responsible for the way in which they are used or for any misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees and ISO member bodies undertake to

apply IEC, ISO and ISO/IEC publications transparently to the maximum extent possible in their national and

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of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.

The main task of the joint technical committee is to prepare International Standards. However,

the joint technical committee may propose the publication of a Technical Report when it has

collected data of a different kind from that which is normally published as an International

Standard, for example "state of the art".

ISO/IEC TR 15067-3-2, which is a Technical Report, has been adopted and adapted by

subcommittee 25: Interconnection of information technology equipment, of ISO/IEC joint

technical committee 1: Information technology.

This Technical Report is closely based on the document GridWise® Interoperability Context-

Setting Framework (March 2008), prepared by The GridWise Architecture. Also, the original

structure of the technical part of this document has been maintained.
____________
GridWise® is a registered tradename by The GridWise Architecture Council.
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ISO/IEC TR 15067-3-2:2016 – 5 –
© ISO/IEC 2016

This Technical Report has been approved by vote of the member bodies, and the voting

results may be obtained from the address given on the second title page.

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.
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– 6 – ISO/IEC TR 15067-3-2:2016
© ISO/IEC 2016
INFORMATION TECHNOLOGY –
HOME ELECTRONIC SYSTEM APPLICATION MODEL –
Part 3-2: GridWise – Interoperability context-setting framework
1 Executive Summary

As the deployment of automation technology advances, it touches upon many areas of our

corporate and personal lives. A trend is emerging where automation systems are growing to

the extent that integration is taking place with other systems to provide even greater

capabilities more efficiently and effectively. GridWise provides a vision for this type of

integration as it applies to the electric system.

Imagine a time in the not too distant future when homeowners can offer the management of

their electricity demand to participate in a more efficient and environmentally friendly

operation of the electric power grid. They will do this using automation technology that acts on

their behalf in response to information from other automation components of the electric

system. This technology will recognize their preferences to parameters such as comfort and

the price of energy to form responses that optimize the local need to a signal that satisfies a

higher-level need in the grid.

For example, consider a particularly hot day with air stagnation in an area with a significant

dependence on wind generation. To manage the forecasted peak electricity demand, the bulk

system operator issues a critical peak price warning. Their automation systems alert electric

service providers who distribute electricity from the wholesale electricity system to

consumers. In response, the electric service providers use their automation systems to inform

consumers of impending price increases for electricity. This information is passed to an

energy management system at the premises, which acts on the consumer’s behalf, to adjust

the electricity usage of the onsite equipment (which might include generation from such

sources as a fuel cell). The objective of such a building automation system is to honor the

agreement with the electricity service provider and reduce the consumer’s bill while keeping

the occupants as comfortable as possible. This will include actions such as moving the

thermostat on the heating, ventilation, and air-conditioning (HVAC) unit up several degrees.

The resulting load reduction becomes part of an aggregated response from the electricity

service provider to the bulk power system operator who is now in a better position to manage

total system load with available generation.

Looking across the electric system, from generating plants, to transmission substations, to the

distribution system, to factories, office parks, and buildings, automation is growing, and the

opportunities for unleashing new value propositions are exciting. How can we facilitate this

change and do so in a way that ensures the reliability of electric resources for the wellbeing of

our economy and security? The GridWise Architecture Council (GWAC) mission is to enable

interoperability among the many entities that interact with the electric power system. A good

definition of interoperability is, “The capability of two or more networks, systems, devices,

applications, or components to exchange information between them and to use the

information so exchanged.” As a step in the direction of enabling interoperability, the GWAC

proposes a context-setting framework to organize concepts and terminology so that

interoperability issues can be identified and debated, improvements to address issues

articulated, and actions prioritized and coordinated across the electric power community.

By a context-setting framework, we mean something at a high, organizational level (see

Figure S.1), some neutral ground upon which a community of stakeholders can talk about

____________

“EICTA Interoperability White Paper,” European Industry Association, Information Systems Communication

Technologies Consumer Electronics, 21 June 2004.
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ISO/IEC TR 15067-3-2:2016 – 7 –
© ISO/IEC 2016

issues and concerns related to integrating parts of a large, complex system. Borrowing

concepts from the Australian National E-Health Transition Authority, a framework sits at a

broad, conceptual level and provides context for more detailed technical aspects of

interoperability. In contrast, “A model (or architecture) identifies a particular problem space

and defines a technology-independent analysis of requirements. The design maps model

requirements into a particular family of solutions based upon standards and technical

approaches. Finally a solution manifests a design into a particular vendor software

technology, ensuring adherence to designs, models, and frameworks.”
Framework
Model
Design
Solution
IEC
Figure S.1 – A Framework Provides High-Level Perspective

The intent of the interoperability framework is to provide the context for identifying and

debating interoperability issues to advance actions that make integration within this complex

system easier. The framework recognizes that interoperability is only achieved when

agreement is reached across many layers of concern. These layers span the details of the

technology involved to link systems together, to the understanding of the information

exchanged, to the business processes and organizational objectives that are represented in

business, economic, and regulatory policy.

Besides introducing new opportunities and benefits, the application of information technology

(IT) also introduces a new set of challenges. As they contribute to all economic sectors,

traditionally separate applications and infrastructures get more and more interconnected.

Effects and decisions within each critical infrastructure influence the other infrastructures

much more than before. The framework identifies the key interoperability issue areas and can

help resolve interdependencies within the electric system and with other infrastructures. It

reflects the increasingly important role of IT in the electric system, resulting in an electricity

plus information (E+I) infrastructure. The framework also enables the representation and

exchange of ideas with other critical infrastructure domains. It supports comparing, aligning,

and harmonizing technical approaches with accompanying management procedures and
business processes.

Figure S.2 summarizes the layered interoperability categories according to technical,

informational, and organizational groups. In addition to these categories of interoperability,

the framework proposes a classification of interoperability issues that cut across the layers.

This document introduces these issue areas with the intent to explore and articulate the

detailed nature of each issue area in separate documents engaging interested experts in their

creation. The cross-cutting issues represent the areas we believe should be focused on to

start improving interoperability across the web of electricity concerns.
____________

National E-Health Transition Authority (NEHTA), “Towards an Interoperability Framework, v 1.8,“ August 2005.

(www.nehta.gov.au)
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– 8 – ISO/IEC TR 15067-3-2:2016
© ISO/IEC 2016
Political and Economic
Objectives as Embodied in
8: Economic/Regulatory Policy
Policy and Regulation
Strategic and Tactical
Objectives Shared
Organizational
7: Business Objectives
between Businesses
(Pragmatics)
Alignment between
Operational Business
6: Business Procedures
Processes and Procedures
Relevant Business Knowledge
that Applies Semantics with
5: Business Context
E + I
Process Workflow
Informational
Understanding of Concepts
(Semantics)
Contained in the Message
4: Semantic Understanding
Data Structures
Understanding of Data Structure
in Messages Exchanged
3: Syntactic Interoperability
between Systems
Exchange Messages between
Systems across a
Technical
2: Network Interoperability
Variety of Networks
(Syntax)
Mechanism to Establish
Physical and Logical I
1: Basic Connectivity
Connectivity of Systems
IEC
Figure S.2 – Interoperability Framework Categories

The audience for this document are system architects and integrators with the ability to

participate in establishing a technical foundation to discuss interoperability, articulate issues

to achieving interoperability, and develop proposals to improve the situation. It presumes the

reader is knowledgeable of complex system integration and the technical, informational, and

organizational issues that surround this area. This technical document lays the foundation for

future, companion material to targeted purposes and audiences. Ideally, the reader will

consider the application of the concepts presented in this material to their field of interest to

help address interoperability challenges as well as to provide suggestions on improvements to

this material.

The GWAC realizes that other versions of the framework should be tailored to speak to the

interests of other audiences, such as regulators, business decision-makers, system operators,

and system suppliers. This material may consist of white papers, checklists, or other forms of

presentation.

To introduce this framework, we provide some background for this work in the context of past

GWAC activity and establish some basic concepts and terminology. We then state some

important points about the system-integration philosophy that influences the way automation

components are expected to interface and operate in a collaborative manner in something as

complex as the electric power system. These philosophical tenets are important because they

emphasize the needs of the system integrator and underlie many of the statements made

about the interoperability categories and the cross-cutting issues that are described in

subsequent sections. The set of layered interoperability categories and the cross-cutting

issues is followed by some clarifying examples.

The document closes with an acknowledgement that such a framework is a living concept,

and therefore, a process needs to be put in place to govern its evolution over time both in

terms of concepts and the material used to convey these concepts. If such a framework is to

be helpful to interoperability improvements, the diverse stakeholders in the electric system

should take ownership and have access to participate in its development. This then is the first

of an evolutionary series of documents to describe an interoperability framework and

articulate interoperability issues that assists discussions with participants at all levels.

Providing venues for participation in this work is an important aspect of engaging the

electricity community.
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ISO/IEC TR 15067-3-2:2016 – 9 –
© ISO/IEC 2016

The process to specify and develop future material requires the participation of the electricity

community. Figure S.3 provides a conceptual view of companion material envisaged to follow

from the framework. These works include executive summaries for targeted audiences,

technical papers that articulate interoperability issues and proposed approaches to address

them, checklists, tools, use case scenarios that provide examples of applying the framework,

and other similar documents.
Executive Summaries
(windows for targeted
audiences onto the
framework)
FRAMEWORK
Interoperability Categories Cross-cutting Issues
8: Economic/Regulatory Policy
Organizational 7: Business Objectives
6: Business Procedures
5: Business Context
Informational
4: Semantic Understanding
Technical Papers
(technical expertise)
3: Syntactic Interoperability
Technical
2: Network Interoperability
Architecture
1: Basic Connectivity
Documents
Actionable
Companion
checklists tools scenarios …
Documents
IEC
Figure S.3 – Interoperability Framework Companion Material
2 Introduction

The Gridwise Architecture Council (GWAC) exists to enable automation among the many

entities that interact with the electric power infrastructure. Though we do not prejudge what

this automation will be used for, once it is enabled, we presume that, given opportunity, many

possibilities will be explored, and much economic and social good will result. The GWAC

mission is merely to enable. The goal is a concept called interoperability, which incorporates

the following characteristics:

• exchange of meaningful, actionable information between two or more systems across

organizational boundaries
• a shared understanding of the exchanged information
• an agreed expectation for the response to the information exchange
• a requisite quality of service: reliability, fidelity, and security.

The result of such interaction enables a larger interconnected system capability that

transcends the local perspective of each participating subsystem.

A commonly understood objective for interoperability is the concept of “plug-and-play”. With

plug-and-play, the system integrator is able to configure an automation component into the

system simply by “plugging” it in. Behind the scenes, automated processes determine the

Shared Meaning of Content
Resource Identification
Time Synch and Sequencing
Security and Privacy
Logging and Auditing
Transaction and State Mgt
System Preservation
Performance/Rellability/Scalability
Discovery and Configuration
System Evolution
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– 10 – ISO/IEC TR 15067-3-2:2016
© ISO/IEC 2016

nature of the newly connected automation component and the component determines the

nature of the system so that it is properly configured and can begin to operation properly. If

we consider the level of integration involved as a length or distance, then the “distance to

integrate” for plug-and-play is small [1] .

As attractive as this concept is, achieving plug-and-play is not easy and in many, complex

situations it is not practical to specify standard interfaces to this level of
...

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