1、 IEC TS 62933-5-1 Edition 1.0 2017-07 TECHNICAL SPECIFICATION Electrical energy storage (EES) systems Part 5-1: Safety considerations for grid-integrated EES systems General specification IEC TS 62933-5-1:2017-07(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Geneva, S
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11、afety considerations for grid-integrated EES systems General specification INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 13.020.30 ISBN 978-2-8322-4565-1 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized dis
12、tributor. colour inside 2 IEC TS 62933-5-1:2017 IEC 2017 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 7 4 Basic guidelines for safety aspects of EES systems 17 5 Hazard considerations for EES systems 17 5.1 Electrical hazards . 17 5.2 Mechanical h
13、azards 18 5.3 Other hazards . 19 5.3.1 Explosion hazards . 19 5.3.2 Hazards arising from electrical, magnetic, and electromagnetic fields 19 5.3.3 Fire hazards 19 5.3.4 Temperature hazards . 21 5.3.5 Chemical hazards 21 5.3.6 Unsuitable working conditions 22 6 EES system risk assessment . 22 6.1 EES
14、 system structure 22 6.1.1 General characteristics 22 6.1.2 Specific characteristics 22 6.2 Description of storage conditions 23 6.2.1 Types of grids 23 6.2.2 Type of applications . 23 6.2.3 Location 23 6.2.4 Vulnerable elements 24 6.2.5 Special provisions for EES systems in generally accessible loc
15、ations 24 6.2.6 Sources of external aggression 24 6.2.7 Unattended operation 24 6.2.8 Unintentional islanding 24 6.3 Risk analysis. 25 6.3.1 General . 25 6.3.2 Risk considerations . 26 6.3.3 System level risk analysis 27 7 Requirements necessary to reduce risks . 27 7.1 General measures to reduce ri
16、sks . 27 7.2 Preventive measures against damage to neighbouring inhabitants 29 7.3 Preventive measures against damage to workers and residents 30 7.3.1 Protection from electrical hazards 30 7.3.2 Protection from mechanical hazards 31 7.3.3 Protection from other hazards 31 7.4 Over current protection
17、 design 34 7.5 EES system disconnection and shutdown . 35 7.5.1 General . 35 7.5.2 Grid-disconnected state . 36 IEC TS 62933-5-1:2017 IEC 2017 3 7.5.3 Stopped state 36 7.5.4 EES system shutdown . 36 7.5.5 Cyber security . 37 7.5.6 Partial disconnection . 37 7.5.7 Equipment guidelines for emergency s
18、hutdown . 37 7.6 Preventive maintenance 38 7.7 Staff training . 38 7.8 Safety design 39 7.8.1 General . 39 7.8.2 Initial safety design and subsequent design revision 39 7.8.3 Design revision for minor and major system changes . 40 8 System testing . 40 8.1 General . 40 8.2 Auxiliary system malfuncti
19、on . 42 8.3 EES control subsystem malfunction 42 8.4 EES system internal communication malfunction. 42 8.5 EES system external communication malfunction 43 9 Guidelines and manuals 43 Annex A (informative) Main risks of different storage technologies . 45 A.1 Pumped hydro storage 45 A.2 Flywheel . 4
20、5 A.3 Secondary batteries 46 A.4 Hydrogen and synthetic natural gas 47 A.5 Other EES system technologies 48 Bibliography 49 Figure 1 General description of the approach to address hazards in EES systems 17 Figure 2 Islanding of the EES system . 25 Figure 3 Iterative checking sequence in general risk
21、 assessment procedures 28 Figure 4 General risk reduction measures to minimize hazards 29 Figure 5 Damage propagation from an incident to a big accident, and layered measures to minimize damages 29 Figure 6 Examples of different EES system architectures. 36 Figure 7 Initial safety design and design
22、revision . 39 Figure 8 EES system architecture in the two main EESS configurations . 41 Table A.1 Main risk scenarios for pumped hydro storage . 45 Table A.2 Main risk scenarios for flywheel . 46 Table A.3 Example of main risk scenarios for lithium-ion batteries . 47 Table A.4 Main risk scenarios fo
23、r hydrogen storage . 48 4 IEC TS 62933-5-1:2017 IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRICAL ENERGY STORAGE (EES) SYSTEMS Part 5-1: Safety considerations for grid-integrated EES systems General specification FOREWORD 1) The International Electrotechnical Commission (IEC) is a worl
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36、specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC TS 62933-5-1, which is a technical specification, has been prepared by IEC technical committee TC 120: Electrical Energy Storage (EES) Systems. IEC TS 62
37、933-5-1:2017 IEC 2017 5 The text of this technical specification is based on the following documents: Enquiry draft Report on voting 120/89/DTS 120/100/RVC Full information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above tabl
38、e. 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 document w
39、ill 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
40、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 TS 62933-5-1:201
41、7 IEC 2017 INTRODUCTION Many governments plans for how electricity will be generated and managed in the future have been determined. Such current plans cannot be implemented without long-term storage with capacities in the multi-MWh range. There are a number of types of storage technologies that hav
42、e emerged. Examples of these technologies are pumped hydro storage (PHS), electrochemical batteries, flywheel storage systems and hydrogen and synthetic natural gas (SNG). Pumped hydro storage has been widely used in terms of the total amount of the stored energy. A flywheel is a model of kinetic en
43、ergy storage with a high power density, excellent cycle stability and long life. While some flywheels are intended for short term operation, others can operate over longer periods of time of up to a few hours. Batteries require development primarily to decrease cost, and for some technologies to inc
44、rease energy density as well. Hydrogen and synthetic natural gas (SNG) added to natural gas are likely to be essential elements of future electric grids because of their energy storage duration and capacity. Hydrogen and SNG should be further researched and developed across a broad front, including
45、physical facilities, interactions with existing uses of gas for supply and distribution network, optimal chemical processes, safety, reliability and efficiency. The IEC White Paper “Electrical Energy Storage” (2011-12) may provide further background information on concerned EES systems. The IEC expe
46、cts to keep pace, as in other areas in the past, with the need for international consensus standards for the safety of new storage technologies. It encourages regulators to anticipate the requirement to guarantee the safety of these technologies, and to contribute to shaping suitable international s
47、tandards upon which harmonized regulations may be based. For mature EES systems various IEC standards exist covering technical features, testing and system integration. For other technologies there are only a few standards, covering special topics. Up to now no general standard addressing safety for
48、 EES system integration into an electrical grid has been developed. The rapid growth and the new technologies involved in electrical energy storage in the near future, as well as their installation by consumers will impose particular requirements for safety. At the same time, society and governments
49、 will need assurance of safety before the much- needed systems can be deployed. This document stands as a decisive step towards the gradual alignment with specific technologies and applications concerning the safety of packaged or site-assembled grid- integrated EES system. IEC TS 62933-5-1:2017 IEC 2017 7 ELECTRICAL ENERGY STORAGE (EES) SYSTEMS Part 5-1: Safety considerations for grid-integrated EES systems General specification 1 Scope This part of IEC 62933, which is a Tech
