IEC SRD 62913-2-3:2019

IEC SRD 62913-2-3 ®
Edition 1.0 2019-05
SYSTEMS
REFERENCE DELIVERABLE
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Generic smart grid requirements –
Part 2-3: Resources connected to the grid domains
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IEC SRD 62913-2-3 ®
Edition 1.0 2019-05
SYSTEMS
REFERENCE DELIVERABLE
colour
inside
Generic smart grid requirements –

Part 2-3: Resources connected to the grid domains

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.020; 29.240; 33.200 ISBN 978-2-8322-6882-7

– 2 – IEC SRD 62913-2-3:2019 © IEC 2019
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 9
2 Normative references . 9
3 Terms, definitions and abbreviated terms . 10
3.1 Terms and definitions. 10
3.2 Abbreviated terms . 15
4 Distributed energy resources . 16
............................................................................................... 16
4.1.1 Purpose: business analysis of DERs . 16
4.1.2 Scope: DERs as sources of generation . 16
4.2 Business analysis of DER systems . 17
4.2.1 Benefits and challenges of grid-connected DER systems . 17
4.2.2 Stakeholders involved in the DER domain . 20
4.2.3 Traffic light concept for DERs . 20
4.2.4 Business drivers and objectives of DER stakeholders . 21
4.2.5 DER grid services . 23
4.2.6 Regional differences . 29
4.2.7 List of business roles and business Use Cases of the domain . 29
4.2.8 List of system Use Cases and system roles . 33
5 Smart home/commercial/industrial/DR-customer energy management . 41
5.1 Purpose and scope . 41
5.1.1 Clause objective . 41
5.1.2 General context . 41
5.2 Business analysis . 42
5.2.1 General overview . 42
5.2.2 List of business roles and business Use Cases of the domain . 43
5.2.3 List of system Use Cases and system roles . 48
5.3 Smart home requirements for the smart grid . 55
5.3.1 Smart grid requirements extracted from smart home Use Cases . 55
5.3.2 Other requirements . 72
6 Energy storage . 72
6.1 Purpose and scope . 72
6.1.1 Clause objective . 72
6.1.2 General context . 72
6.2 Business analysis . 74
6.2.1 General overview . 74
6.2.2 EES grid services . 74
6.2.3 List of business Use Cases and business roles of the domain . 78
6.2.4 List of system Use Cases and system roles . 80
6.3 EES smart grid requirements . 82
6.3.1 Smart grid requirements extracted from EES Use Cases . 82
6.3.2 Other requirements . 82
Annex A (informative) Links with other TCs and gathered materials . 84
A.1 Distributed energy resources . 84
A.1.1 Identified TCs . 84

A.1.2 Gathered materials . 84
A.1.3 Description of the five-level hierarchical diagram . 85
A.2 Smart home/commercial/industrial/DR-customer energy management . 87
A.2.1 Identified TCs . 87
A.2.2 Gathered materials . 87
A.2.3 Liaisons from other TCs contributing to the smart grid requirements of
the domain . 96
A.3 Energy storage . 97
A.3.1 Identified TCs . 97
A.3.2 Gathered materials . 97
A.3.3 Liaisons from other TCs contributing to the smart grid requirements of

the domain . 100
Annex B (informative) Use Cases . 101
B.1 Distributed energy resources . 101
B.2 Smart home/commercial/industrial/DR-customer energy management . 109
B.2.1 Business Use Cases . 109
B.2.2 System Use Cases . 175
B.3 Energy storage . 376
B.3.1 Business Use Cases . 376
Bibliography . 392

Figure 1 – Example of a hierarchical DER system five-level architecture. 19
Figure 2 – DER primary stakeholders . 20
Figure 3 – Traffic light concept . 21
Figure 4 – Business policies, business objectives, business processes, and system
use cases . 22
Figure 5 – Role highlights of the smart home domain . 44
Figure 6 – General architecture for the smart home . 54
Figure 7 – General architecture for the smart building . 55
Figure 8 – EES domains, services and roles . 75
Figure A.1 – Reference architecture diagram for smart metering communications . 94
Figure A.2 – EU M/490 – Flexibility Functional Architecture (CEN-CENELEC-ETSI) . 94
Figure A.3 – France – COSEI architectures . 95
Figure A.4 – Correspondence table between hardware components and functional
components (system roles) . 96
Figure B.1 – Level 1 DER systems with autonomous functions at facility and DSO sites . 101

Table 1 – Content of IEC SRD 62913-2-3:2019 . 9
Table 3 – Matrix of stakeholders versus their primary business purposes . 22
Table 4 – Types of DER services . 24
Table 5 – Business roles . 30
Table 6 – Business Use Cases . 31
Table 7 – Identified system Use Cases of the domain . 33
Table 8 – System roles of the domain . 38
Table 9 – Business roles of the domain. 43
Table 10 – Identified smart home business Use Cases of the domain . 45

– 4 – IEC SRD 62913-2-3:2019 © IEC 2019
Table 11 – Identified smart building business Use Cases of the domain . 46
Table 12 – Identified system Use Cases of the domain . 48
Table 13 – System roles of the domain . 53
Table 14 – Business requirements . 55
Table 15 – Identified EES services . 74
Table 16 – Business roles of the domain . 78
Table 17 – Identified business Use Cases of the domain . 79
Table 18 – Identified system Use Cases of the domain . 81
Table 19 – Requirements extracted from EES Use Cases . 82
Table A.1 – Existing User Stories. 84
Table A.2 – Existing Use Cases . 85
Table A.3 – IEC documents on smart home/commercial/industrial/ DR-customer energy
management . 87
Table A.4 – Existing User Stories. 88
Table A.5 – Existing Use Cases . 89
Table A.6 – Links between TC 57/WG 21 User Stories and SyC SE Use Cases . 90
Table A.7 – Existing User Stories. 93
Table A.8 – International Standards on energy storage . 97
Table A.9 – Regional and/or organizational standards on energy storage . 98
Table A.10 – Existing Use Cases on energy storage . 99
Table A.11 – Existing Use Cases on energy storage . 100
Table B.1 – DER Use Cases . 102
Table B.2 – Adapt the smart home behaviour to the resident/client’s preferences . 109
Table B.3 – Enable the interoperability between the smart home and the smart grid . 118
Table B.4 – Provide enriched smart home data to relevant parties in order to make the

resident/client more active . 126
Table B.5 – Manage the flexibility on electricity demand and generation within a smart
home from market signals . 134
Table B.6 – Adapt the smart building behaviour to the energy manager/client’s
preferences . 142
Table B.7 – Provide enriched smart building data to relevant parties in order to make

the energy manager/client more active . 151
Table B.8 – Manage the flexibility on electricity demand and generation within a smart
building from market signals . 160
Table B.9 – Manage the flexibility in electricity demand and generation within a smart
home from emergency signals . 168
Table B.10 – Manage the flexibility of the smart home on electricity demand and

generation from price incentives . 175
Table B.11 – Manage the flexibility of the smart home on electricity demand and
generation from DR requests . 205
Table B.12 – Manage opt-outs of the smart home to automatic responses related to
price incentives or DR requests . 233
Table B.13 – Customize automatic responses of the smart home (price incentives, DR

requests, or emergency signals) . 247
Table B.14 – Provide a third party with enriched smart home electricity data . 261
Table B.15 – Provide alarms related to the smart home electricity behaviour to the
client or resident . 278

Table B.16 – Manage the flexibility in electricity demand and generation within a smart
home from emergency signals . 287
Table B.17 – Manage the flexibility of the smart building on electricity demand and

generation from price incentives . 296
Table B.18 – Manage the flexibility of the smart building on electricity demand and
generation from DR requests . 306
Table B.19 – Manage opt-outs of the smart building to automatic responses related to
price incentives or DR requests . 316
Table B.20 – Customize automatic responses of the smart building (price incentives,

DR requests, or emergency signals) . 329
Table B.21 – Provide a third party with enriched smart building electricity data . 344
Table B.22 – Provide alarms related to the smart building electricity behaviour to the
client or energy manager . 360
Table B.23 – Optimize the smart building behaviour regarding internal and external
information received . 369
Table B.24 – Contribute to the efficient integration of intermittent renewable energies
in the electric power system . 377
Table B.25 – Help the grid user or the grid operator improve the quality of supply . 385

– 6 – IEC SRD 62913-2-3:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GENERIC SMART GRID REQUIREMENTS –

Part 2-3: Resources connected to the grid domains

FOREWORD
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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.
IEC SRD 62913-2-3, which is a Systems Reference Deliverable, has been prepared by
IEC systems committee Smart Energy.
The text of this Systems Reference Deliverable is based on the following documents:
Draft SRD Report on voting
SyCSmartEnergy/89/DTS SyCSmartEnergy/98/RVDTS

Full information on the voting for the approval of this Systems Reference Deliverable 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.
A list of all parts in the IEC SRD 62913 series, published under the general title Generic smart
grid requirements, can be found on the IEC website.

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.
A bilingual version of this publication may be issued at a later date.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
– 8 – IEC SRD 62913-2-3:2019 © IEC 2019
INTRODUCTION
The IEC SRD 62913 series has been broken down into domains so as to provide a neutral
term for document management purposes. Under the general title Generic smart grid
requirements, the IEC SRD 62913 series consists of the following parts:
– Part 1: Specific application of the Use Case methodology for defining generic smart grid
requirements according to the IEC systems approach;
– Part 2 is composed of 5 subparts which refer to the clusters that group several domains:
• Part 2-1: Grid related domains – these include transmission grid management,
distribution grid management, microgrids and smart substation automation;
• Part 2-2: Market related domain;
• Part 2-3: Resources connected to the grid domains – these include bulk generation,
distributed energy resources, smart home/commercial/industrial/DR-customer energy
management, and energy storage;
• Part 2-4: Electric transportation related domain;
IEC SRD 62913 refers to 'clusters' of domains for its different parts so as to provide a neutral
term for document management purposes simply because it is necessary to split in several
documents the broad scope of smart energy.
The purpose of this document is to define the generic smart grid requirements of resources
connected to the grid domains, i.e. distributed energy resources,
smart home/commercial/industrial/DR-customer energy management, energy storage, and
bulk generation domains, based on the methods and tools developed in IEC SRD 62913-1.
The document for each domain is composed as follows.
• Purpose and scope.
• The business analysis: to address domain’s strategic goals and principles regarding its
smart grid environment. It also lists business Use Cases and system Use Cases identified,
their associated business roles and system roles (actors) and the simplified role model
highlighting main interactions between actors.
• Generic smart grid requirements: extracted from Use Cases described in Annex B.
• Annex A lists links between domains, technical committees and gathered materials
(existing standardization documents, user stories, Use Cases and functional architectures).
• Annex B includes a complete description of Use Cases per domain based on IEC 62559-2.
• Bibliography.
This document is based on the inputs from domain experts as well as existing materials in a
smart grid environment.
GENERIC SMART GRID REQUIREMENTS –

Part 2-3: Resources connected to the grid domains

1 Scope
This part of IEC SRD 62913 initiates and illustrates the IEC’s systems approach based on
Use Cases and involving the identification of generic smart grid requirements for further
standardization work for resources connected to the electric power systems – i.e. distributed
energy resources, smart home/commercial/industrial/DR-customer energy management,
energy storage, and bulk generation domains – based on the methods and tools developed in
IEC SRD 62913-1.
This document captures possible "common and repeated usage" of a smart grid system,
under the format of "Uses Cases" with a view to feeding further standardization activities. Use
Cases can be described in different ways and can represent competing alternatives. From
there, this document derives the common requirements to be considered by these further
standardization activities in term of interfaces between actors interacting with the given
system.
To this end, Use Case implementations are given for information purposes only. The interface
requirements to be considered for later standardization activities are summarized (typically
information pieces, communication services and specific non-functional requirements:
performance level, security specification, etc.).
This analysis is based on the business input from domain experts as well as existing material
on grid management in a smart grid environment when relevant. Table 1 highlights the
domains and business Use Cases described in this document.
Electric vehicles are on one hand considered as a DER and normally should fit in
IEC SRD 62913-2-3; but on the other hand, and for historical reasons, they are separated into
two documents and covered in the IEC SRD 62913-2-4 electric transportation domain.
The document will be updated as new editions are published. Table 1 highlights the business
areas covered in this document.
Table 1 – Content of IEC SRD 62913-2-3:2019
Domain Content Scope described
Distributed energy resources Identified with 41 business Use Cases Operation and monitoring of a
and 36 system Use Cases DER
Smart home/commercial/industrial/ Described with 8 business Use Cases Smart home, smart building,
DR-customer energy management and 14 system Use Cases multi-building complexes
Energy storage Described with 2 business Use Cases EES services for grid users
and system operators
Bulk generation n/a n/a
2 Normative references
There are no normative references in this document.

– 10 – IEC SRD 62913-2-3:2019 © IEC 2019
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
ancillary services
services necessary for the operation of an electric power system provided by the system
operator and/or by power system users
Note 1 to entry: System ancillary services may include the participation in frequency regulation, reactive power
regulation, active power reservation, etc.
[SOURCE: IEC 60050-617:2009, 617-03-09]
3.1.2
automated control
aggregate of operations aimed at sustaining or/and improving the functioning of a controlled
object without direct human participation and in accordance with a prescribed control
objective
EXAMPLE Automatic response to signals such as dynamic peak period notifications, price period changes or
flexibility requests.
Note 1 to entry: The automated control is configured and tuned by the client/resident and the client/resident can
override it if needed.
3.1.3
capacity firming
method that uses storage to control the ramp rate (MW/min), smooth and mitigate rapid output
changes from renewable generation due to different natural parameters such as wind speed
variability affecting wind generation or shading of solar generation due to clouds
Note 1 to entry: It is important because these rapid output changes must be offset by other "dispatchable"
generation.
[SOURCE: DOE Global energy storage database, Glossary]
3.1.4
congestion
situation in a transmission or distribution network requiring, in parts
of an electric power system, a limitation of load flow
[SOURCE: IEC 60050-617:2009, 617-03-04]
3.1.5
congestion mitigation
set of one or more actions set up to avoid grid congestions by means such as by increasing
the transfer capacity of the grid, by curtailing demand connected to the grid or by curtailing
generation units
Note 1 to entry: Congestion in transmission and distribution grids refers to a situation in which the demand for
power transfer exceeds the transfer capability of a grid.

3.1.6
dispatchable generation source
source of electricity that can be dispatched at the request of power grid operators or of the
plant owner
Note 1 to entry: That is, generating plants that can be turned on or off, or can adjust their power output according
to an order.
3.1.7
flexible load
load of consumers (in kW) which can be reduced or increased for a limited period of time at
the request of an external actor according to contractual arrangements
Note 1 to entry: The control is automatic and based on technology or devices operated remotely due to the
volume of consumers participating – such as residential consumers.
Note 2 to entry: The control may target specific appliances, such as space-heaters for instance.
3.1.8
distributed energy resource
DER
distributed set of one or more energy service resources, including generators, energy storage,
controllable load and ancillary services
3.1.9
dynamic peak period
DPP
superseding calendar which replaces the initial price schedule during a short period of time
when facing a peak demand
3.1.10
electric power system
EPS
network of electrical components deployed to supply and transfer electric power to a load
Note 1 to entry: The EPS may include generation units.
3.1.11
electrical energy storage
EES
process which consists in using various forms of energy such as mechanical, chemical,
electrochemical, electrical, or thermal energy to store energy that will later be converted to
electricity
Note 1 to entry: This domain report covers any type of EES which can charge electricity to and discharge
electricity from any source.
3.1.12
electrical energy storage management
collection of methods used to manage EES with software, hardware, and services associated
with the intelligent monitoring, management, and control of EES, for the specific purposes
such as the enhancement of a system's efficiency, cost reduction or optimization of energy
utilization to meet EES users’ needs
3.1.13
electrical connection point
ECP
point of electrical connection between the DER source or sink of energy and any EPS
Note 1 to entry: Each DER unit has an ECP connecting it to its local power system; groups of DER units have an
ECP where they interconnect to the power system at a specific site or plant; a group of DER units plus local loads
have an ECP where they are interconnected to the utility power system.

– 12 – IEC SRD 62913-2-3:2019 © IEC 2019
Note 2 to entry: For those ECPs between a utility EPS and a plant or site EPS, this point is identical to the point
of common coupling (PCC) in IEEE Std 1547, Standard for Interconnection and Interoperability of Distributed
Energy Resources with Associated Electric Power Systems Interfaces.
3.1.14
electricity data
electricity-related data, either generation or consumption, coming from the electricity meter or
from electrical devices
3.1.15
energy meter
instrument intended to measure electrical energy by integrating power with respect to time
[SOURCE: IEC 60050-313:2001, 313-01-35]
3.1.16
energy shifting
principle of shifting the timing of energy use by, for example, charging electricity during off-
peak time and by discharging it during peak hours to reduce the cost to purchase electricity
3.1.17
flexibility
modification of electricity injection and/or extraction, on an individual or aggregated level, in
reaction to an external signal in order to provide a service within the energy system
Note 1 to entry: Definition based on EURELECTRIC, Active Distribution System Management. A key tool for the
smooth integration of Distributed Generation, 2013]
3.1.18
frequency regulation
ability of a balancing authority to help the interconnection maintain scheduled frequency
Note 1 to entry: This assistance can include both turbine governor response and automatic generation control.
3.1.19
grid stabilization
process requisite to stabilize power transmission and distribution networks with the operation
of power plants
Note 1 to entry: Grid stabilization can be achieved, for example, by stabilizing the frequency of electric power
produced on an island and by stabilizing voltage at the end of a long transmission line.
3.1.20
historian
software service which accumulates time-stamped data, events and alarms in a database
which can be queried or used for further actions
3.1.21
home area network
HAN
in-house local area network which interconnects domestic equipment and can be used for
energy management purposes
[SOURCE: CEN/CLC/ETSI TR 50572:2011]
Note 1 to entry: There can be multiple HANs inside a customer’s premises.
3.1.22
islanding
process whereby a power system is split into two or more islands

[SOURCE: IEC 60050-603:1986, 603-04-31]
Note 1 to entry: Islanding is either a deliberate emergency measure, or the result of automatic protection or
control action, or the result of human error.
Note 2 to entry: In this document, islanding refers to a measure to avoid load shedding in an area by immediately
supplying power to the area from EES, and temporarily form an islanding status after the power supply from grids
fails due to, for instance, a contingency.
3.1.23
load following
adjusting the output of power generation plants to meet the electricity demands which vary in
a particular period
3.1.24
manual control
mode that allows clients or residents to directly control their consumptions depending on
information provided by the energy market player(s) they have contracted with
Note 1 to entry: Sometimes this manual control mode is the only one available when technology or the electrical
devices are not able to respond automatically to dynamic peak period notifications, price period changes or flexible
requests.
3.1.25
operating reserves
all resources, generation or consumption, available to the system operator within a short
interval of time to provide for frequency regulation or balancing purposes
Note 1 to entry: Operating reserves consist of spinning reserve, the increasing power output of generators that
are already connected to the power grids, and non-spinning reserve, the extra generating capacity that is not
currently connected to the system but can be brought online after a short delay.
[SOURCE: ENTSO-E: System operation guideline]
3.1.26
peak shaving
process needed to reduce peak demand by storing energy when demand is low and releasing
energy when demand is high to level out electricity load throughout the day
3.1.27
price-based management
management method based on the fact that in order to modulate clients’ consumptions during
a day, a week or a peak period, the electricity supplier can offer temporarily higher electricity
prices in order to tempt clients to erase or postpone the use of some of their electric devices
Note 1 to entry: Price-based control therefore combines variable electricity prices and the sending of price
incentives to clients for them to be able to control manually or automatically the use of their electric devices.
3.1.28
quality of service
collective effect of service performance which determines the degree of satisfaction of a user
of the service
Note 1 to entry: The quality of service is characterized by the combined aspects of service support performance,
service operability performance, severability performance, service integrity and other factors specific to each
service.
[SOURCE: IEC 60050-191:1990/AMD1:1999, 191-19-01]

– 14 – IEC SRD 62913-2-3:2019 © IEC 2019
3.1.29
remote customer information
RCI
data and signals communicated toward the smart home through the internal smart metering
gateway
Note 1 to entry: This data can be tariff signals, flexibility requests or technical data.
3.1.30
security
ability of an electric power system to operate in such a way
that credible events do not give rise to loss of load, stresses of system components beyond
their ratings, bus voltages or system frequency outside tolerances, instability, voltage collapse,
or cascading
[SOURCE: IEC 60050-191:1999, 191-21-03]
Note 1 to entry: In the context of smart grid the term ‘security’ may be too vague. In this document, it may be
replaced by ‘operational reliability’ or ‘operational security’ to reflect the real practices of, for example, NERC or
ENTSO-E.
3.1.31
self-consumption
act of consuming energy which is produced by a power generation system installed at the
consumption site
3.1.32
smart home
house or apartment equipped with a communicating (electricity, telecoms) and structured
home area network (HAN)
Note 1 to entry: Clients or residents are able to remotely control and/or programme home electrical devices by
activating or enabling and/or disabling internal controls and/or external events (excluding emergency signals).
Then, smart home devices can adapt their operations without any resident intervention.
3.1.33
smart home flexibility
ability of a smart home to adjust up or down its consumption or generation depending on
signals in order to modify the load curve
3.1.34
smart site
site equipped with a communicating (electricity, telecoms) and structured home area network
(HAN)
Note 1 to entry: Clients, residents or operations staff are able to remotely control and/or programme home
electrical devices by activating or enabling and/or disabling internal controls and/or external events (excluding
emergency signals). Then, smart home devices can adapt their operations without any resident intervention.
3.1.35
traffic light concept
concept which describes the relation between the use of flexibilities on the grid side (red
phase) and the market side (green phase) and the interrelation between both (yellow phase),
and which evaluates the grid status (red, yellow, green) and provides the information towards
the relevant market roles
3.1.36
virtual power plant
collection of small and very small decentralized generation units that is monitored and
controlled by a super-ordinated energy management system

[SOURCE: IEC smart grid Standardization Roadmap, 2010]
3.1.37
virtual resource
set of one or more energy service resources, including generators, energy storage,
controllable load, and ancillary services
3.1.38
voltage support
ability to cope with the effects on grid voltage profiles when, for example, heavy power flows
occur, to allow more installed photovoltaic capacity, while meeting the power quality
requirements without grid reinforcement and power curtailment
3.1.39
wide area network
WAN
network that provides communication services to a geographic area larger than a single urban
area
Note 1 to entry: Typically a wide area network covers a single country.
[SOURCE: IEC 60050-732:2010, 732-01-07]
3.2 Abbreviated terms
AMI advanced meterin
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