IEC SRD 62913-2-4:2019

IEC SRD 62913-2-4 ®
Edition 1.0 2019-05
SYSTEMS
REFERENCE DELIVERABLE
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Generic smart grid requirements –
Part 2-4: Electric transportation related domain
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IEC SRD 62913-2-4 ®
Edition 1.0 2019-05
SYSTEMS
REFERENCE DELIVERABLE
colour
inside
Generic smart grid requirements –

Part 2-4: Electric transportation related domain

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.020; 29.240; 33.200 ISBN 978-2-8322-6883-4

– 2 – IEC SRD 62913-2-4:2019 © IEC 2019
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 10
4 Electric transportation . 10
4.1 Purpose and scope . 10
4.1.1 Clause objective . 10
4.1.2 General context . 10
4.2 Business analysis . 11
4.2.1 General overview . 11
4.2.2 List of business Use Cases and business roles of the domain . 12
4.2.3 List of system Use Cases and system roles . 16
4.3 Generic smart grid requirements . 19
4.3.1 List of requirements . 19
4.3.2 Other requirements . 21
Annex A (informative) Links with other TCs and gathered materials . 23
A.1 General . 23
A.2 Electric transportation . 23
A.2.1 Identified TCs . 23
Annex B (informative) Electric transportation Use Cases . 25
B.1 Business Use Cases . 25
B.2 System Use Cases . 75
Bibliography . 99

Figure 1 – Use Case domain overview of the electric transportation domain . 14
Figure 2 – Role model illustration mapped on SGAM . 19

Table 1 – Content of IEC SRD 62913-2-4:201 n . 7
Table 2 – Identified Business Use Cases of the domain . 12
Table 3 – Business roles of the domain . 15
Table 4 – Identified System Use Cases of the domain . 16
Table 5 – System Roles of the domain . 17
Table 6 – Requirements identified . 20
Table 7 - Function allocation between EV and EVSE . 21
Table B.1 – UC62913-2-4-B001 Charge an EV . 25
Table B.2 – UC62913-2-4-B002 Control the charge of an EV . 35
Table B.3 – UC62913-2-4-B003 Charge an EV with demand-response . 45
Table B.4 – UC62913-2-4-B004 Charge an EV with smart-charging . 48
Table B.5 – UC62913-2-4-B005 Provide smart bidirectional energy transfer . 52

Table B.6 – UC62913-2-4-B007 Provide frequency containment reserve services
through EV. 62
Table B.7 – UC62913-2-4-S001 Negotiate a charge plan for smart charging an EV . 75

– 4 – IEC SRD 62913-2-4:2019 © IEC 2019
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GENERIC SMART GRID REQUIREMENTS –

Part 2-4: Electric transportation related domain

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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IEC SRD 62913-2-4, 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/85/DTS SyCSmartEnergy/101/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.
– 6 – IEC SRD 62913-2-4:2019 © IEC 2019
INTRODUCTION
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 System 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 related 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;
• Part 2-5: Support functions related domains – these include metering management and
asset management.
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 grid.
The purpose of this document is to define the generic smart grid requirements of electric
transportation domain, i.e. electric transportation domain, based on the methods and tools
developed in IEC SRD 62913-1.
The document for each domain is composed as follows.
– Purpose and scope.
– Business analysis: to address the 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 2-4: Electric transportation related domain

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 the electric transportation domain, 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 "Use 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 terms 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 electric transportation in a smart grid environment when relevant. Table 1 highlights the
domains and business Use Cases described in this document.
Table 1 – Content of IEC SRD 62913-2-4:2019
Domain Content Scope
Electric transportation Described with 6 business Use Cases EV Charging
and 1 system Use Case
Smart charging and bidirectional
power transfer
Vehicle to grid
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 61851-1:2017, Electric vehicle conductive charging system – Part 1: General
requirements
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

– 8 – IEC SRD 62913-2-4:2019 © IEC 2019
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
NOTE Those definitions are consistent with ISO 15118 (all parts).
3.1.1
bidirectional power transfer
BPT
combination of forward or reverse power transfer transaction
3.1.2
charging session
collection of charging transactions at a charge point related only to the charging of an electric
car assigned to a specific customer in a specific timeframe with a unique identifier
Note 1 to entry: The charging session is a subset of the service session.
3.1.3
charging transaction
smallest billable part of a charging session representing the transfer of energy in a specific
timeframe
3.1.4
energy management system
EMS
system that controls electric power transfer among DER, premises appliances and the grid
3.1.5
electric vehicle communication controller
EVCC
embedded system, within the vehicle, that implements the communication between the vehicle
and the SECC in order to support specific functions
3.1.6
e-mobility needs
needs expressed by the EV user in terms of departure time, minimum and maximum energy
request and target energy request
3.1.7
forward power transfer
FPT
power transfer from external power supply to vehicle battery via EV supply equipment
3.1.8
reverse power transfer
RPT
power transfer from vehicle battery to home, loads or grid via EV supply equipment
3.1.9
identification
procedure for an actor/a system/a contract to provide its identifying information for the
purpose of authorization, mostly to provide its capability for payments or a reference to a
service contract
3.1.10
high level communication
HLC
bi-directional digital communication using protocol and messages and physical and data link
layers as specified for example in ISO 15118 (all parts)
3.1.11
roaming
data interoperability process between e-mobility service providers and charging service
operators in order to offer a continuity of services to a customer who travels outside the area
of his or her original service provider
Note 1 to entry: IEC 63119 (all parts) provides a protocol specification for roaming.
Note 2 to entry: Roaming between mobile telephone operators illustrates best the concept. A given contract with
an international option allows one to telephone in his or her home country and abroad. Mobile phone operators
financially compensate the telecommunication made abroad.
Note 3 to entry: Charging facility could be provided with one unique RFID (Radio Frequency Identification Device)
card (or mobile phone), either in one's home country or abroad. CSOs financially compensate the electricity and/or
the charging service itself.
3.1.12
smart charging
controlled charging process that meets the mobility constraints and requirements of the EV
user while optimizing the use of the grid and the available electrical energy to minimize
additional investments in the grid and facilitate the integration of DER
[SOURCE: Eurelectric and ESMG Smart Charging report]
3.1.13
wireless power transfer
WPT
transfer of electrical energy from a power source to an electrical load via electric and/or
magnetic fields or waves between a primary and a secondary device without current flow over
a galvanic connection
Note 1 to entry: The receiver can be affixed to the vehicle's bottom or front and the transmitter on a parking lot
surface or parking specific charging device.
[SOURCE: IEC 61980-1:2017, 3.10, modified – The words "without current flow over a
galvanic connection" have been added to the definition, and the note to entry has been
added.]
3.1.14
original equipment manufacturer
OEM
original producer of a vehicle's components (such as cars, boats, buses and lorries), a
company that manufactures spare parts, mainly on behalf of another company, the integrator
or the assembler
3.1.15
pairing
process by which a vehicle is correlated with the unique EVSE at which it is located and from
which the power will be transferred either through a cable or through a wireless technology
3.1.16
service detail record
SDR
data package containing all necessary information within one unique identification which is
needed for billing or informing of/about a service session of a specific customer

– 10 – IEC SRD 62913-2-4:2019 © IEC 2019
3.1.17
service session
collection of services around a charge point mainly related to the charging of an electric car
assigned to a specific customer in a specific timeframe with a unique identifier.
3.1.18
supply equipment communication controller
SECC
entity which implements the communication to one or multiple EVCCs and which may be able
to interact with secondary actors
3.2 Abbreviated terms
DER Distributed Energy Resource
EMS Energy Management System
EV Electric Vehicle
EVSE Electric Vehicle Supply Equipment
RFID Radio-Frequency Identification Device
FCR Frequency Containment Reserve
SDR Service Detail Record
4 Electric transportation
4.1 Purpose and scope
4.1.1 Clause objective
The purpose of this document is to present a business analysis of the electric transportation
domain, and more specifically to describe the smart grid requirements of the domain using the
Use Case approach as defined in IEC SRD 62913-1.
This analysis is based on existing materials, including user stories, set of Use Cases, and
architectures. It is also based on latest updates from IEC TC 69 experts working on
communication protocols.
4.1.2 General context
This document considers non-guided electrical transportation using batteries, which require
electricity charging through electric power grids (public and private), travelling on land (public
streets, roads, motorways). It includes private or professional battery electric vehicles, plug-in
hybrid electric vehicles, cars, lorries, buses and motorbikes. Planes, boats, trains and trams
are out of the scope of this document.
There is a need to standardize the naming and definition of electric transportation domain
roles in relation with the roles of the electrical system and markets, and smart grid Functions,
bearing also in mind that they have to be articulated with non-electrical systems for mobility
and associated services.
In order to ensure implementation of interoperability between roles in future e-mobility
solutions, it is necessary to describe comprehensive business Use Cases defining their
relationships and interactions, in view of satisfying needs of the final customers by adequate
service provision.
Example of application of these Use Cases shall be given for the main common situations
(charge or discharge an EV, provide service to the grid, etc.).

The couple EV-EVSE will be considered as a DER. DERs are described in IEC SRD 62913-2-
3. However, the mobile and possible bidirectional natures of the EV, unusual for a classical
DER, led to this document.
4.2 Business analysis
4.2.1 General overview
The transition towards a more sustainable economy is a key driver of the development of
electric transportation, with a stronger political impetus to reduce carbon dioxide emissions
and promote alternatives to fuel vehicles – both at regional and national levels. The number of
electric vehicles in circulation has increased over the past years and will continue to grow as
technologies are becoming more mature and new stakeholders are entering this new market.
In the coming years smart charging and bidirectional power transfer will be key to allow a
smooth transition for grid operators.
The development of electric vehicles therefore creates various opportunities and challenges
for the actors of the electric power system, as well as for the actors of the Mobility Sector
(OEM, service providers…).
The following actors will play a major role in the development of smart charging.
a) Roles related to metering services will be concerned, as the bidirectional energy flowing
from or to the EV will need to be measured and associated with a metering point for
example for billing purposes – whether the charging station is public or private
(commercial and tertiary offices, residential building, private parking, etc.).
b) For system and grid operators, the charging or discharging of electric vehicles, for which
location, timing and load profile is by nature variable and not easily predictable and can
have a significant impact on the planning, operation, and maintenance of the grids. It will
contribute to the growth of possible multiple peak loads – at wholesale system and at local
levels – leading to increased network investment needs. Grid operators will have to take
into account EV charging and discharging in their network operations business processes,
but also develop operational planning and Demand Response models and tools to
anticipate its effects on the grid at minimum cost.
c) EV, potentially considered as a flexible DER, will be enrolled in electricity markets by
flexibility operators.
d) According to local regulations on flexibilities, the EV user will be able to choose a charge
plan/schedule depending on price signals for instance (based on charging time, power,
energy, renewable energy mix according to local regulations) but also other demand
response signals in addition to local constraints managed by an EMS.
Furthermore, other roles are emerging with the development of electrical transportation.
e) Installation, maintenance, operation and monitoring of charging station (charging service
operators, CSO) or the operations of electric vehicle supply equipment and the charging of
EV.
f) E-mobility service providers will provide high-value services related to the use of EV, such
as the identification of the closest currently operational charging station(s) or the charging
station(s) in a given area, the calculation of the route between two charging stations, the
reservation of a parking spot equipped with a charging station, access to charging stations
of different charging service operators with a single contract and payment, etc.
g) E-mobility clearing house operators will ensure the exchange of data between charging
service operators and e-mobility service providers, and therefore allow an interoperable
easy and open access to the market.
h) Users of the vehicles (EV user, fleet operators, public transportation operators, etc.) will
have access to high value services, through interactions with the roles listed above using
smart cards, smartphones and IT solutions.

– 12 – IEC SRD 62913-2-4:2019 © IEC 2019
The evolutions implied by the development of electric vehicles tend to change the way the
vehicle is considered by EV users, from an object that can be owned to a service or set of
services that can be purchased. Different models of services may be considered for the
electric transportation domain:
• infrastructure or charging services, with the possibility to charge any EV on any public or
private charging station;
• mobility services, with the rental of EV/batteries, the reservation of a charging and parking
spot for instance;
• energy services, with the purchase of electricity, but also the management of power
demand peaks, BPT, ancillary services, frequency regulation, reserves services;
• data and communication services, with the exchange of various data between the different
roles (tariffs, energy imported to charge the EV, etc.).
In this context, the development of interoperability becomes crucial to ensure communication
between the different infrastructures (EV, EVSE, etc.) and information systems related to
infrastructure and energy services (charging station operations, network operations, etc.), as
well as mobility and data services.
4.2.2 List of business Use Cases and business roles of the domain
The business Use Cases listed are a result of the business analysis carried out previously –
the list is not exhaustive, and it is likely to grow as new Use Cases come to light.
The business Use Cases are associated with one or several of the business objectives of the
domain, which include: deliver charging, bidirectional and ancillary services.
Table 2 lists and provides a brief description of the business Use Cases that have been
identified so far (they do not cover the entire domain business Use Cases). Figure 1 describes
the Use Cases a hierarchical organization proposal.
Table 2 – Identified business Use Cases of the domain
Index of the business Use Identified business Brief description Level of maturity
Case Use Case
UC62913-2-4-B001 Charge an EV During a timeframe, energy Already implemented
is exchanged between an
EV and an EVSE. This Use
Case describes the
information exchanges
between roles involved in
this process and
requirements associated
with it.
UC62913-2-4-B002 Control the charge of an This business Use Case Already implemented
EV describes the information
exchanges between roles
involved in controlling the
energy transfer to charge
an EV in order to comply
with energy secondary
actors while responding to
the EV User needs.
Index of the business Use Identified business
Brief description Level of maturity
Case Use Case
UC62913-2-4-B003 Charge an EV with The scope of this business Already implemented
Demand Response Use Case is EV charging
based on flexibility
incentives coming from the
market. These incentives
can be for example price
signals and renewable mix
signals. The objective is to
optimize customer, grid,
DER and e-production
needs.
Charge an EV with smart The business Use Case Incomplete due to
UC62913-2-4-B004
charging describes the smart uncertainty
charging process of an
electric vehicle in a private
network (public car-park,
residential condominium,
etc.).
This Use Case is based on
ISO 15118 mechanism.
UC62913-2-4-B005 Provide smart bidirectional Bidirectional power transfer Explorative
energy transfer into the grid based on
messages sent by local
energy management
system.
UC62913-2-4-B006 Provide smart charging This business Use Case Incomplete due to
services to an EV fleet describes the information uncertainty
exchanges between roles
involved in the process of
optimizing users, fleet
operator, grid and market
constraints for the charge
of an EV fleet.
UC62913-2-4-B007 Provide frequency This business Use Case Explorative
containment reserve describes the process to
services through EV provide primary frequency-
regulation services using
electric vehicles
controllable charge and
discharge possibilities.
Frequency-restoration or
replacement reserve are
out of scope.
Primary frequency-
regulation services can be
provided through injection
or consumption power
transfer and this
contribution to frequency
regulation can be
symmetric or dissymmetric
(only positive or negative
regulation).
UC62913-2-4-B008 Discharging an EV to a This business Use Case Explorative
load disconnected from the describes the information
grid exchanges between roles
involved in an energy
transfer between an EV and
a load (other EV, battery,
home appliances, etc.)
disconnected from the grid
(main distribution grid,
microgrid, etc.).
– 14 – IEC SRD 62913-2-4:2019 © IEC 2019

Figure 1 – Use Case domain overview of the electric transportation domain
The business Use Cases listed above are described in short version in Annex B.
In Figure 1, the general domain electric transportation defines five types of services linked to
the general mobility activity. If needed, more services could be added.

The BUC associated to these services are organized in a hierarchical way and all the Use
Cases inherit of the requirements defined in the parent's Use Case.
For example, the first BUC "Charge an EV" defines safety general requirements that are not
repeated in children Use Cases.
E-mobility is a fast evolving domain and the vision in Figure 1 will have to be updated in the
future to reflect those evolutions.
Table 3 lists the business roles that have been identified so far. This list is not exhaustive.
Table 3 – Business roles of the domain
Business roles Definition
Charging service Party responsible for the provisioning and operation of a charging infrastructure
operator (CSO) (including charging sites), and managing electricity to provide requested energy transfer
services.
Also known as charging spot infrastructure operator (CSIO).
Distribution system Entity responsible for the planning, operation, maintenance, and the development in
operators (DSO) given areas of the electricity distribution network (LV, MV, and potentially HV), the quality
of electricity supply (power delivery, voltage, etc.) and for customer access to energy
supplier-retailer (ESR) market through his or her system under regulated conditions.
Equivalent to distribution network operators (DNO) or distribution grid operators.
In some countries, the distribution grid operator may also manage the metering system
(e.g. France).
E-mobility clearing Entity that solves the relation between e-mobility service provider and charging service
house operator (E- operators.
MCHO)
Ensures exchange of data between operators allowing an open access to the market and
provides a central management of data needed for smart charging to all stakeholders
(collection, formatting, consolidation, dispatching).
E-mobility service Party responsible for providing high-value service related to the use of an EV (renting an
provider (EMSP) EV, reservation of parking service, navigation services, energy services which include
charging service provider in relation with CSO, etc.).
E-mobility customer Legal entity associated to an e-mobility service provider by the legal means of a contract.
(EC)
Requests easy access to e-mobility solutions at minimum cost.
EV-user (EVU) The person or legal entity using the vehicle and providing information about its needs.
EXAMPLE In case the EV does not support plug and charge, or if the plug and charge
mode is not used, the EV user could manually use an ID tag (RFID card, NFC device,
Smartphone, etc.) and its applications for identification on the EVSE.
Fleet operator Responsible for operating and managing a fleet of EVs.
(FLO)
Takes into account the needs of operations and requests charging service from the CSO
according to these needs, at best cost.
Flexibility operator A party which aggregates flexibilities for its customers and activates flexibility sites.
(FO)
A party that aggregates a consistent amount of power capacity from several DERs and
puts them at disposal for the interested DSO.
Meter operator A party responsible for installing, maintaining, testing, certifying and decommissioning
(MO) physical meters in compliance with the regulated conditions for contract between ESR
and their customers.
[SOURCE: ENTSO-E, EFET, and ebIX, 2010]
Private network Responsible for operating and managing a private electrical network (within a building,
operator (PNO) parking, etc.).

– 16 – IEC SRD 62913-2-4:2019 © IEC 2019
Business roles Definition
(Electricity) Entity whose activity is the wholesale purchase of electricity and the subsequent direct
supplier/retailer resale to client through a contract. The supplier may also deliver energy-related services
such as providing flexibility through electricity price modulation, i.e. (time-of-use, critical
peak prices.) or which can have value on energy markets and/or for network operations.
System operator Party responsible for safe and reliable operation of a part of the electric power system in
(SO) a certain area and for connection to other parts of the electric power system.
[SOURCE: IEC 60050-617:2009, 617-02-09]

4.2.3 List of system Use Cases and system roles
4.2.3.1 System Use Cases and system roles of the domain
The purpose of this document is not to provide an exhaustive description of all SUC. This has
to be done at the TC level with the appropriate level of expertise.
However, in order to start describing on set of SUC, Table 4 gives an overview of the SUC in
relation with the BUCs "Provide frequency containment reserves services through electric
vehicle" and "Charge an EV with smart-charging".
Table 4 describes the system Use Cases that have been identified so far to enable the
business Use Cases described above to operate. The list is non-exhaustive and will be
updated when new editions of this document are published.
Table 4 – Identified system Use Cases of the domain
Index of the Identified system Use Case Brief description
system Use Case
UC62913-2-4-S001 Negotiate a charge plan for smart charging an This Use Case describes the organization of
EV exchange and computation of data between
the CSMS and the other roles in order to
settle the best possible charge plan for a new
EV requesting to charge.
UC62913-2-4-S002 Manage bidirectional power transfer into the This Use Case describes the organization of
grid exchange and computation of data between
the CSMS, the EVU and the other roles in
order to settle a bidirectional plan.
UC62913-2-4-S003 Dynamic fast bidirectional energy transfer This Use Case covers both AC and DC
charging and discharging. It covers also
dynamic adjustment of the AC or DC
bidirectional power transfer considering
complex grid situations and secondary actors
for grid services. Using dynamic control
mode, SECC is responsible for ensuring e-
mobility needs (departure time; minimum and
target energy request).
UC62913-2-4-S004 Power and frequency measure aggregation This Use Case describes the systems
and transmission exchanges to measure power and frequency
of an EV aggregate and transmit them for
forecast.
UC62913-2-4-S005 Activate frequency containment reserve This Use Case describes the systems
exchanges to activate bidirectional power
transfer instructions to EVs.
UC62913-2-4-S006 Dispatch FCR capacity to selected EV for This Use Case describes the systems
activation exchanges to dispatch bidirectional power
transfer instructions to EVs part of an
aggregate.
UC62913-2-4-S007 Forecast FCR capacity of an EV aggregate This Use Case describes the systems
exchanges to be able to forecast the capacity
of an EV aggregate to provide a FCR service

Index of the Identified system Use Case Brief description
system Use Case
UC62913-2-4-S008 Store and provide frequency-reserve measure This Use Case describes the systems
exchanges to store measurements on the
frequency-containment reserve service and to
provide this information for control.
UC62913-2-4-S009 Measure real-time FCR capacity of an EV This Use Case describes the systems
aggregate exchanges to provide real time measures of
the frequency-containment power-reserves of
the flexibility aggregator.
It covers the opt-out and re-negotiation
process with EV user and EV charging
environment roles.
The aim is to provide real time measures of
the frequency-containment power-reserves of
the flexibility aggregator.
UC62913-2-4-S010 Exchange on local constraints with network This Use Case describes the systems
exchanges to identify local constraints
responsible parties
disabling the possibility to take part in a FCR
service for EVs.
Table 5 describes the system roles that have been identified so far to enable the business
Use Cases described in Table 3. The list is non-exhaustive and will be updated when new
editions of this document are published.
Table 5 – System roles of the domain
System roles Definition
Battery A physical on-board device that can store and restitute the electric energy.
Charging schedule Maximum allowable charge power vs. time information, which the EV shall follow while
charging the battery.
See ISO 15118-1.
Charging service System responsible for managing charging stations, typically operated by the CSO
management
system (CSMS)
Charging station All equipment for delivering current to EVs, installed in an enclosure and with special
(CS) supervisory and control functions.
EVSE and charging station only differ in the fact that the charging station is an
aggregation of EVSE's. EVSE can charge one EV and a charging station can have
multiple EVSEs.
See: IEC 61851-1.
Charging station A physical location with one connection to the distribution grid, in which a set of charging
area stations are installed and managed by one CSO. A charging station area has other
usages of the electricity than for the recharge of electric vehicles, at least for auxiliary
system, consumption and losses.
Several charging station areas could be distinguished with specific standardization
domain and regulation like
• residential or home places;
• block of flats;
• tertiary building;
• private campus or parking lot;
• public parking lot;
• public recharge location.
– 18 – IEC SRD 62913-2-4:2019 © IEC 2019
System roles Definition
Charging station Definition of pricing by CSO calculated according to given parameters: time of use, period
tariff (CST) of the day, quantity of electricity, etc. Two cases can be encountered:
• a global service pricing, including EVSE operation and maintenance, electricity and
possible other services such as parking; or
• a separated pricing for electricity selling by a specific electricity supplier on one
hand, and charging service selling by CSO on the other hand. In this case, the
organization shall be compliant with the regulations applying to electricity selling.
Customer Standardized identification of the EVU as customer of an EMSP.
identification device
It might be included within a communication system.
Since there are several possible ways of identification, these ways would be pr
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