IEC TS 62933-4-1:2017

Electrical energy storage (EES) systems - Part 4-1: Guidance on environmental issues - General specification

IEC TS 62933-4-1:2017(E) describes environmental issues associated with electrical energy storage systems (EES systems), and presents guidelines to address the environmental impacts to and from EES systems including the impacts to humans due to chronic exposure associated with the mentioned environmental impacts.

General Information

• Status: Published
• Publication Date: 25-Jul-2017
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 13.020.30 - Environmental impact assessment
• Technical Committee: TC 120 - Electrical Energy Storage (EES) systems
• Drafting Committee: WG 4 - TC 120/WG 4
• Current Stage: PPUB - Publication issued
• Start Date: 11-Aug-2017
• Completion Date: 26-Jul-2017

Standards Content (Sample)

IEC TS 62933-4-1
®

Edition 1.0 2017-07
TECHNICAL
SPECIFICATION



Electrical energy storage (EES) systems –
Part 4-1: Guidance on environmental issues – General specification

IEC TS 62933-4-1:2017-07(en)

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IEC TS 62933-4-1

®


Edition 1.0 2017-07




TECHNICAL



SPECIFICATION



















Electrical energy storage (EES) systems –

Part 4-1: Guidance on environmental issues – General specification



























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 13.020.30 ISBN 978-2-8322-4604-7



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® Registered trademark of the International Electrotechnical Commission

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– 2 – IEC TS 62933-4-1:2017 © IEC 2017
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 General . 10
5 Identifying environmental issues in EES systems . 10
5.1 General . 10
5.2 Viewpoint 1: Guide for addressing environmental issues (ISO Guide 64:2008) . 10
5.3 Viewpoint 2: System aspects . 11
5.3.1 General . 11
5.3.2 System to environment . 11
5.3.3 Environment to system . 11
5.4 Viewpoint 3: Electrical energy storage technology independence . 11
6 Environmental guidelines of EES systems . 13
6.1 General . 13
6.2 Guidelines for issues from the EES system to the environment . 13
6.3 Guidelines for issues from the environment to the EES system . 14
6.4 Guidelines for issues from the EES system to humans with a chronic impact . 14
Annex A (informative) Examples of potential issues that are not selected as issues
from the EES system to the environment . 15
Bibliography . 18

Figure 1 – EES system architecture in the two main EESS configurations . 12

Table 1 – Guidelines for issues from the EES system to the environment . 13
Table A.1 – Examples of potential issues that were not selected . 15
Table A.2 – Result of assessment using viewpoints 1, 2 and 3 . 16

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IEC TS 62933-4-1:2017 © IEC 2017 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ELECTRICAL ENERGY STORAGE (EES) SYSTEMS –

Part 4-1: Guidance on environmental issues –
General specification

FOREWORD
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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
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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.
The main task of IEC technical committees is to prepare International Standards. In
exceptional circumstances, a technical committee may propose the publication of a technical
specification when
• the required support cannot be obtained for the publication of an International Standard,
despite repeated efforts, or
• the subject is still under technical development or where, for any other reason, there is the
future but no immediate possibility of an agreement on an International Standard.
Technical specifications are subject to review within three years of publication to decide
whether they can be transformed into International Standards.
IEC TS 62933-4-1 which is a technical specification, has been prepared by IEC technical
committee 120: Electrical Energy Storage (EES) Systems.

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– 4 – IEC TS 62933-4-1:2017 © IEC 2017
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
120/93/DTS 120/98/RVDTS

Full information on the voting for the approval of this technical specification 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 62933 series, published under the general title Electrical energy
storage (EES) systems, 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
• transformed into an International standard,
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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IEC TS 62933-4-1:2017 © IEC 2017 – 5 –
INTRODUCTION
Electrical energy storage systems (EES systems) have been integrated into the grid systems.
The EES systems play one of the key roles in grid operation. Integrating the EES systems
with the grid systems may further bring benefits such as efficient utilization in renewable
energy sources. A variety of electrical energy storage technologies have been used widely in
small and large sizes, for residential, industrial and utility siting, and in renewable energy
stabilization and other applications. An EES system is an integrated system with components
that are well standardised, however, system aspects specific to EES systems have not been
well discussed. Furthermore, environmental issues for product level have been discussed
horizontally in other IEC documents; however, specific environmental aspects of systems
have not been well discussed. Therefore, a standard method for assessing environmental
issues in EES systems is indispensable.
Under these circumstances, this document describes, in accordance with ISO Guide 64:2008,
principles and approaches for environmental issues of EES systems in both normal and
abnormal operating conditions, and presents guidelines to address environmental impacts to
and from EES systems, including the chronic impacts on humans.

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ELECTRICAL ENERGY STORAGE (EES) SYSTEMS –

Part 4-1: Guidance on environmental issues –
General specification



1 Scope
This part of IEC 62933, which is a Technical Specification, describes environmental issues
associated with electrical energy storage systems (EES systems), and presents guidelines to
address the environmental impacts to and from EES systems including the impacts to humans
due to chronic exposure associated with the mentioned environmental impacts.
It is the aim of this document to describe environmental issues that are uniquely and only
applicable to EES systems. However, it is not the aim of this document to describe
environmental issues that are applicable to any systems.
It is not the aim of this document to describe environmental issues associated with
components and products used in EES systems.
This document applies to all EES systems regardless of the type of electrical energy storage
technologies.
This document considers the issues in both normal and abnormal operating conditions.
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.
1
IEC 62933-1 , Electrical energy storage (EES) systems – Part 1: Terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62933-1 and the
following apply.
NOTE It has been considered useful to repeat some terms from exterior sources for convenience.
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/
___________
1
Under preparation. Stage at the time of publication:IEC/CDV 62933-1:2017.

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IEC TS 62933-4-1:2017 © IEC 2017 – 7 –
3.1
accumulation subsystem
storage subsystem
EESS subsystem, comprising at least one EES, where the energy is stored in some form
Note 1 to entry: Mechanical energy, electrochemical energy, electromagnetic energy are frequent forms of stored
energy.
Note 2 to entry: Generally (see Figure 1), the accumulation subsystem is connected to the power conversion
subsystem that performs the necessary power conversion to electrical energy; however, in some cases, a power
conversion is embedded in the accumulation subsystem (e.g. in electrochemical secondary cells the energy is
directly available in electrical form).
3.2
auxiliary subsystem
EESS subsystem containing equipment intended to perform particular functions additional to
the storage/extraction of electrical energy which is done in the primary subsystem
Note 1 to entry: Generally (see Figure 1) the auxiliary subsystem is connected to the auxiliary POC through the
auxiliary connection terminal.
Note 2 to entry: The equipment of the auxiliary subsystem (auxiliary equipment) is normally indispensable for
setting up all the EESS operational states and assessing the correct performance (operation) of the primary and
control subsystems during any operating mode.
Note 3 to entry: The auxiliary subsystem can be configured to take the energy from the primary subsystem (see
Figure 1).
3.3
communication subsystem
EESS subsystem containing an arrangement of hardware, software, and propagation media to
allow the transfer of messages from one EESS component/subsystem to another one,
including the data interface with external links
[SOURCE: IEC TS 62443-1-1:2009, 3.2.25, modified – the original definition has been
particularized for the EES system architecture.]
3.4
component
constituent part of a device which cannot be physically divided into smaller parts without
losing its particular function
[SOURCE: IEC 60050-151:2001, 151-11-21]
3.5
control subsystem
EESS subsystem serving for monitoring and controlling the EESS, by including all equipment
and functions for acquisition, processing, transmission, and display of the necessary process
information
Note 1 to entry: Generally (see Figure 1) the control subsystem may be connected to the communication interface
and comprises at least the management subsystem, communication subsystem and the protection subsystem.
Note 2 to entry: The control subsystem is normally fed by the auxiliary subsystem.
[SOURCE: IEC TS 62351-2:2008, 2.2.195, modified – the second part of the original
definition has been particularized for the EES system architecture, and the first part of the
original definition and notes to entry have been deleted.]

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3.6
earth leakage current
current flowing from the live parts of the installation to earth, in the absence of an insulation
fault
[SOURCE: IEC 60050-442:1998, 442-01-24]
3.7
electrical energy storage system
EES system
EESS
grid-integrated installation with defined electrical boundaries, comprising at least one EES,
whose purpose is to extract electrical energy from an electric power system, store this energy
internally in some manner and inject electrical energy into an electrical power system and
which includes civil engineering works, energy conversion equipment and related ancillary
equipment
Note 1 to entry: The EES system is controlled and coordinated to provide services to the electric power system
operators or to the electric power system users.
Note 2 to entry: In some cases, an EES system may require an additional energy source during its discharge,
providing more energy to the electric power system than the energy it stored (electric power system is defined in
IEC 60050-601:1985, 601-01-01).
3.8
environment
natural and man-made surroundings in which an EES system is installed, operates and
interacts, including buildings and facilities, air, water, land, natural resources, flora, fauna
(including human inhabitants) of those surroundings
[SOURCE: IEC 60050-904:2014, 904-01-01,modified – the original definition has been
particularized for the EES system surroundings.]
3.9
environmental aspect
element of an EES system that can interact with the environment
[SOURCE: IEC 60050-904:2014, 904-01-02, modified – the original definition has been
particularized for the EES system surroundings]
3.10
environmental impact
any change to the environment, whether adverse or beneficial, wholly or partly resulting from
environmental aspects
[SOURCE: IEC 60050-904:2014, 904-01-03]
3.11
environmental issue
any environmental impact to and from EES systems including the impacts to humans during or
after chronic exposure
3.12
life cycle
consecutive and interlinked stages of a product system, from raw material acquisition or
generation of natural resources to final disposal
[SOURCE: IEC 60050-901:2013, 901-07-12]

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IEC TS 62933-4-1:2017 © IEC 2017 – 9 –
3.13
life cycle thinking
consideration of all relevant environmental aspects (of a product) during the entire (product)
life cycle
[SOURCE: ISO Guide 64:2008, 2.6]
3.14
malfunction
sit
...