1、 IEC TS 62257-7 Edition 2.0 2017-09REDLINE VERSIONRecommendations for small renewable energy and hybrid systems for rural electrification Part 7: Generators IEC TS 62257-7:2017-09 RLV(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Geneva, Switzerland All rights reserve
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10、ebstore.iec.ch/csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC TS 62257-7 Edition 2.0 2017-09REDLINE VERSIONRecommendations for small renewable energy and hybrid systems for rural electrification Part
11、 7: Generators INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 27.160 ISBN 978-2-8322-4859-1 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. colour inside 2 IEC TS 62257-7:2017 RLV IEC 2017 CONT
12、ENTS FOREWORD . 3 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 8 4 General . 9 5 Generator boundaries 9 6 Generators requirements . 10 6.1 General requirements . 10 6.2 Specific requirements for the different technologies 10 6.2.1 Input requirements . 10 6.2.2 Output r
13、equirements 12 6.2.3 Specific requirements for different generator technologies . 12 7 Generator design and sizing 13 8 Hybrid generation 13 Bibliography 14 Figure 1 General electrical configuration of a collective electrification system . 9 Table 1 General inputs and outputs to be considered for ge
14、nerator specification 10 Table 2 Input requirements relative to the generator technology 11 Table 3 Output requirements relative to the generator technology 12 Table 4 Specific generators requirements considered in the IEC 62257 series 13 IEC TS 62257-7:2017 RLV IEC 2017 3 INTERNATIONAL ELECTROTECHN
15、ICAL COMMISSION _ RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION Part 7: Generators FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC Nation
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25、eferenced publications 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. DI
26、SCLAIMER This Redline version is not an official IEC Standard and is intended only to provide the user with an indication of what changes have been made to the previous version. Only the current version of the standard is to be considered the official document. This Redline version provides you with
27、 a quick and easy way to compare all the changes between this standard and its previous edition. A vertical bar appears in the margin wherever a change has been made. Additions are in green text, deletions are in strikethrough red text. 4 IEC TS 62257-7:2017 RLV IEC 2017 The main task of IEC technic
28、al 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
29、 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 Internatio
30、nal Standards. IEC 62257-7, which is a technical specification, has been prepared by IEC technical committee 82: Solar photovoltaic energy systems. This second edition cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. This edition includes the f
31、ollowing significant technical changes with respect to the previous edition: a) Removed the word “small“ from the description of the PV systems, and removed the power limit (100 kVA). b) Increased the relevant voltage levels to 1 000 V (AC) and 1 500 V (DC). This technical specification is to be use
32、d in conjunction with other parts of this series. The text of this technical specification is based on the following documents: Enquiry draft Report on voting 82/1201/DTS 82/1258/RVDTS Full information on the voting for the approval of this technical specification can be found in the report on votin
33、g indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts of IEC 62257 series, under the general title: Recommendations for renewable energy and hybrid systems for rural electrification, can be found on the IEC website. IEC
34、TS 62257-7:2017 RLV IEC 2017 5 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
35、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. IMPORTANT The “colour inside” logo on the cover page of this publication indicates that it contains colours which are considered t
36、o be useful for the correct understanding of its contents. Users should therefore print this publication using a colour printer. 6 IEC TS 62257-7:2017 RLV IEC 2017 INTRODUCTION The IEC 62257 series of documents intends to provide to different players involved in rural electrification projects (such
37、as project implementers, project contractors, project supervisors, installers, etc.) documents for the setting-up of renewable energy and hybrid systems with AC voltage below 500 1 000 V and DC voltage below 750 1 500 V and power below 100 Kva. These documents are recommendations: to choose the righ
38、t system for the right place; to design the system; to operate and maintain the system. These documents are focused only on rural electrification, concentrating on but not specific to, developing countries. They must not be considered as all-inclusive to rural electrification. The documents try to p
39、romote the use of renewable energies in rural electrification; they do not deal with clean development mechanisms at this time (CO 2emission, 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 w
40、ith different parts corresponding to items for safety, sustainability of systems and at the lowest life-cycle cost as possible. 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 syst
41、ems. The purpose of this part of IEC 62257 is to provide project implementers with general information about generators and to highlight the main characteristics relative to the different technologies that can be used. IEC TS 62257-7:2017 RLV IEC 2017 7 RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY AND
42、 HYBRID SYSTEMS FOR RURAL ELECTRIFICATION Part 7: Generators 1 Scope The purpose of this part of IEC 62257 is to specify the general requirements for generators (maximum power = 100 kVA) in decentralized rural electrification systems. The aim is to point out the main items that must be considered wh
43、en selecting, sizing, installing, operating and maintaining this equipment. This part of IEC 62257 specifies the general requirements for the generators in decentralized rural electrification systems. This document is a general introduction followed by more specific documents dedicated to the genera
44、tion technologies which are the most currently used in rural electrification projects. 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 ap
45、plies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC TS 62257-2:2004 2015, Recommendations for small renewable energy and hybrid systems for rural electrification Part 2: From requirements to a range of electrification systems IEC TS 62
46、257-4, Recommendations for small renewable energy and hybrid systems for rural electrification Part 4: System selection and design IEC TS 62257-5, Recommendations for small renewable energy and hybrid systems for rural electrification Part 5: Protection against electrical hazards IEC TS 62257-7-1, R
47、ecommendations for small renewable energy and hybrid systems for rural electrification Part 7-1: Generators Photovoltaic arrays generators 1IEC TS 62257-7-3, Recommendations for small renewable energy and hybrid systems for rural electrification Part 7-3: Generating Generator set Selection of genera
48、ting generator sets for rural electrification systems 1 IEC TS 62257-9-1 2 , Recommendations for small renewable energy and hybrid systems for rural electrification Part 9-1: Integrated systems Micropower systems _ 1Third edition to be published. A second edition (dated 2010) already exists. 2To be
49、published. 8 IEC TS 62257-7:2017 RLV IEC 2017 3 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 generator apparatus that converts one form of energy into electricity SOURCE: IEC
