1、Recommendations for renewable energy and hybrid systems for rural electrificationPart 9-3: Integrated systems User interfacePD IEC/TS 62257-9-3:2016BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06National forewordThis Published Document is the UK implementation of IE
2、C/TS 62257-9-3:2016. It supersedes DD IEC/TS 62257-9-3:2006 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee GEL/82, Photovoltaic Energy Systems.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publica
3、tion does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 91981 7ICS 27.160; 27.180Compliance with a British Standard cannot confer immuni
4、ty fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 31 October 2016.Amendments/corrigenda issued since publicationDate Text affectedPUBLISHED DOCUMENTPD IEC/TS 62257-9-3:2016IEC TS 62257-9-3 Edition 2.0 2016-09 TECHNICAL
5、 SPECIFICATION Recommendations for renewable energy and hybrid systems for rural electrification Part 9-3: Integrated systems User interface INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 27.160 ISBN 978-2-8322-3587-4 Registered trademark of the International Electrotechnical Commission Warning! Make
6、 sure that you obtained this publication from an authorized distributor. colourinsidePD IEC/TS 62257-9-3:2016 2 IEC TS 62257-9-3:2016 IEC 2016 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative reference 6 3 Terms and definitions 7 4 Electrical characteristics 8 4.1 Equipment 8 4.2 System
7、voltages 9 5 Functional description 9 6 Design and erection . 10 6.1 System earthing 10 6.2 Implementation of interface functions . 10 6.2.1 Function A: connection to electricity sources 10 6.2.2 Function B: isolation . 10 6.2.3 Function C: protection against direct and indirect contact 10 6.2.4 Fun
8、ction D: protection against overcurrents 11 6.2.5 Function E: contract management 11 6.2.6 Function F: earthing . 11 6.2.7 Function G: distribution of circuits 11 6.3 Insulation requirements . 11 6.4 Selection of electrical equipment . 11 6.5 Housing 11 6.6 Protection against fraudulent use. 11 7 In
9、formation to be given and marking . 12 8 Verification and acceptance . 12 8.1 General . 12 8.2 Verification by inspection . 12 8.3 Commissioning tests . 13 Figure 1 General configuration of an electrification system 6 Figure 2 Interface for user installations supplied from an a.c. or a d.c. source .
10、 9 Figure 3 Interface for user installations supplied locally from a.c. or d.c. sources (not from a microgrid) 10 Table 1 Functions ensured by various types of user interfaces 9 PD IEC/TS 62257-9-3:2016IEC TS 62257-9-3:2016 IEC 2016 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RECOMMENDATIONS FOR R
11、ENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION Part 9-3: Integrated systems User interface FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The
12、object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specific
13、ations (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations li
14、aising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters expr
15、ess, 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. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Commit
16、tees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC 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 Nationa
17、l Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC itself does no
18、t provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 6) All users should ensure that they have t
19、he latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoeve
20、r, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publication
21、s is 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. The main task of IEC te
22、chnical 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 subje
23、ct 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 Inter
24、national Standards. IEC 62257-9-3, which is a technical specification, has been prepared by IEC technical committee 82: Solar photovoltaic energy systems. PD IEC/TS 62257-9-3:2016 4 IEC TS 62257-9-3:2016 IEC 2016 This second edition cancels and replaces the first edition issued in 2006. It constitut
25、es a technical revision. The main technical changes with regard to the previous edition are as follows: Changing the voltage range covered by the technical specification to a.c. nominal voltage below 1 000 V and d.c. nominal voltage below 1 500 V (introduction). Deleted below 100 kVA from upper limi
26、t. Including 240 V and 220 V 1- in the voltage levels (scope). Deleted the terms microgrid and micropowerplants from terms and definitions. Stated the requirement for segregation between a.c. and d.c circuits in housing (6.5). Stated that the protection devices for overcurrent are always accessible
27、(6.6). The text of this technical specification is based on the following documents: Enquiry draft Report on voting 82/1030/DTS 82/1089/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 table. This part of
28、IEC 62257-9 is to be used in conjunction with the IEC 62257 series. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts in the IEC 62257 series, published under the general title Recommendations for renewable energy and hybrid systems for rural elect
29、rification, can be found on the IEC website. Future standards in this series will carry the new general title as cited above. Titles of existing standards in this series will be updated at the time of the next edition. The committee has decided that the contents of this publication will remain uncha
30、nged 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 v
31、ersion 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 colo
32、ur printer. PD IEC/TS 62257-9-3:2016IEC TS 62257-9-3:2016 IEC 2016 5 INTRODUCTION The IEC 62257 series intends to provide to different players involved in rural electrification projects (such as project implementers, project contractors, project supervisors, installers, etc.) documents for the setti
33、ng up of renewable energy and hybrid systems with a.c. nominal voltage below 1 000 V and d.c. nominal voltage below 1 500 V. These documents are recommendations: to choose the right system for the right place, to design the system, to operate and maintain the system. These documents are focused only
34、 on rural electrification concentrating on but not specific to developing countries. They should not be considered as all inclusive to rural electrification. The documents try to promote the use of renewable energies in rural electrification; they do not deal with clean mechanisms developments at th
35、is time (CO2emission, carbon credit, etc.). Further developments in this field could be introduced in future steps. This consistent set of documents is best considered as a whole with different parts corresponding to items for safety, sustainability of systems and at the lowest life cycle cost as po
36、ssible. One of the main objectives is to provide the minimum sufficient requirements, relevant to the field of application that is: small renewable energy and hybrid off-grid systems. PD IEC/TS 62257-9-3:2016 6 IEC TS 62257-9-3:2016 IEC 2016 RECOMMENDATIONS FOR RENEWABLE ENERGY AND HYBRID SYSTEMS FO
37、R RURAL ELECTRIFICATION Part 9-3: Integrated systems User interface 1 Scope This part of IEC 62257, which is a technical specification, specifies the general requirements for the design and the implementation of the interface equipment within the users installation which connects to a microgrid or t
38、he generating part of a standalone system. This interface is a part of the users installation as shown in Figure 1. Figure 1 General configuration of an electrification system This part of IEC 62257 applies to simplified users interfaces (distribution board) in electrical installations with maximum
39、power of 500 VA in Decentralized Rural Electrification Systems (DRESs). NOTE For installations above 500 VA in decentralized electrification systems, IEC TS 62257-5 applies. This part of IEC 62257 applies to an interface equipment within the users installation and which connects the users installati
40、on to: 240 V or 230 V or 220 V or 120 V a.c. microgrid, the generating part a.c. or d.c. of a standalone installation. This equipment provides protection, isolation, and distribution functions. 2 Normative reference The following documents are referred to in the text in such a way that some or all o
41、f 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 61439-3, Low-voltage switchgear and controlgear assemblies Part 3: Distributi
42、on boards intended to be operated by ordinary persons (DBO) IEC 62257 (all parts), Recommendations for renewable energy and hybrid systems for rural electrification IEC Microgrid Production sub-system Micropowerplant User interface Distribution sub-system User sub-system Installation Generator Other
43、 equipment PD IEC/TS 62257-9-3:2016IEC TS 62257-9-3:2016 IEC 2016 7 IEC TS 62257-5, Recommendations for renewable energy and hybrid systems for rural electrification Part 5: Protection against electrical hazards IEC TS 62257-9-2, Recommendations for renewable energy and hybrid systems for rural elec
44、trification Part 9-2: Integrated systems Microgrids IEC TS 62257-9-4, Recommendations for renewable energy and hybrid systems for rural electrification Part 9-4: Integrated systems User installation 3 Terms and definitions For the purposes of this document, the following terms and definitions apply.
45、 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 carrier messenger wire or rope, the primary function of which is to su
46、pport the cable in aerial installations, which may be separate from or integral with the cable it supports 3.2 block part of a line between two consecutive stoppage poles 3.3 earth conductive mass of the earth, whose electric potential at any point is conventionally taken as equal to zero 3.4 equipo
47、tential bonding provision of electric connections between conductive parts, intended to achieve equipotentiality Note 1 to entry: The role of the equipotential bonding is to decrease the difference in potential that can exist between two exposed-conductive parts of an installation. 3.5 protective co
48、nductor identification: PE conductor provided for purposes of safety, for example protection against electric shock SOURCE: IEC 60050-195:1998, 195-02-09 3.6 PEN conductor conductor combining the functions of a protective earthing conductor and a neutral conductor SOURCE: IEC 60050-195:1998, 195-02-
49、12 PD IEC/TS 62257-9-3:2016 8 IEC TS 62257-9-3:2016 IEC 2016 3.7 power line overhead or underground line installed to convey electrical energy for any purpose other than communication 3.8 section part of a line between two tension poles Note 1 to entry: A section generally includes several spans. 3.9 selectivity protection coordination the ability of a protection to identify the faulty section and/or phase(s) of a power system SOURCE
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