1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22162-1 ARP 062-7-3:2008 Edition 1 IEC/TS 62257-7-3:2008 Edition 1SABS STANDARDS DIVISION Recommended practice Recommendations for small r
4、enewable energy and hybrid systems for rural electrification Part 7-3: Generator set Selection of generator sets for rural electrification systems This recommended practice is the identical implementation of IEC/TS 62257-7-3:2008 and is adopted with the permission of the International Electrotechnic
5、al Commission. WARNING Can only be used in conjunction with the ARP 062 series. This document is not a South African National Standard Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This s
6、tandard may only be used and printed by approved subscription and freemailing clients of the SABS. ARP 062-7-3:2008 Edition 1 IEC/TS 62257-7-3:2008 Edition 1 Table of changes Change No. Date Scope National foreword This recommended practice is a technical agreement developed in accordance with SANS
7、1-1, and agreed to by SABS TC 69, Power electronics and alternative energy conversion. This document was published in December 2008. This standard may only be used and printed by approved subscription and freemailing clients of the SABS. IEC/TS 62257-7-3 Edition 1.0 2008-04 TECHNICAL SPECIFICATIONRe
8、commendations for small renewable energy and hybrid systems for rural electrification Part 7-3: Generator set Selection of generator sets for rural electrification systems INTERNATIONAL ELECTROTECHNICAL COMMISSION W ICS 27.160; 27.180 PRICE CODE ISBN 2-8318-9672-X ARP 062-7-3:2008This standard may o
9、nly be used and printed by approved subscription and freemailing clients of the SABS. 2 TS 62257-7-3 IEC:2008(E) CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Normative references .8 3 Terms and definitions .9 4 Introduction to generator sets.11 4.1 Generator set system 11 4.2 Generator set applica
10、tion in rural electrification systems .11 4.3 Resource assessment .11 5 Selection and erection12 5.1 General .12 5.2 Selection requirements12 5.2.1 Power quality.12 5.2.2 Generator set sizing 12 5.2.3 Generator set type.14 5.2.4 Derating factors.14 5.2.5 Starting system15 5.2.6 Control systems.15 5.
11、2.7 Noise issues15 5.2.8 Environmental issues 15 5.3 Erection.15 5.3.1 Shipping 15 5.3.2 Design of the erection site.16 5.3.3 Installation requirements .17 6 Safety.20 6.1 General .20 6.2 Electrical issues 20 6.2.1 General requirements20 6.2.2 Connection system to the application.20 6.2.3 Power cabl
12、es.21 6.2.4 Neutral system 21 6.2.5 Earthing.21 6.2.6 Overcurrent protection.21 6.2.7 Residual Current protection Device (RCD).22 6.2.8 Isolating devices22 6.3 Mechanical issues.22 6.3.1 Vibration22 6.3.2 Protection from mechanical damage22 6.3.3 Protection from moving parts .22 6.4 Thermal issues23
13、 6.5 Fire risk.23 7 Acceptance 23 7.1 General .23 7.2 Conformity of the generator set to the identification file .23 7.3 Conformity of the generator set system to the GS23 7.4 Acceptance process 23 ARP 062-7-3:2008This standard may only be used and printed by approved subscription and freemailing cl
14、ients of the SABS.TS 62257-7-3 IEC:2008(E) 3 7.4.1 Preparation of the generator set for commissioning .23 7.4.2 Commissioning inspection of the generator set system24 7.4.3 Commissioning tests of the generator set system 24 7.4.4 Test file .25 8 Operation and maintenance25 8.1 Access to the generato
15、r set.25 8.2 Operation process.25 8.3 Monitoring .26 8.4 Maintenance schedule.26 9 Replacement 26 10 Marking 27 10.1 Generator set 27 10.2 Engine.27 10.3 Alternator 27 10.4 Shutdown apparatus28 11 Documentation .28 11.1 General .28 11.2 Installation 28 11.3 Operation 29 11.4 Inspection and maintenan
16、ce29 Annex A (informative) Generator set classification criteria .30 Annex B (informative) Identification file34 Annex C (informative) Maintenance schedule 35 Annex D (informative) Example of commissioning records sheet36 Bibliography38 Figure 1 General functional configuration of a generator set po
17、wered system 7 Table 1 Examples of derating factors for generator sets.14 Table 2 Generator set permitted noise levels .15 Table 3 Cross-section of power cables.21 Table A.1 Classification of generator set services 30 Table A.2 Common lifespan values 31 Table C.1 Example of maintenance schedule.35 A
18、RP 062-7-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS. 4 TS 62257-7-3 IEC:2008(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION Part 7-3: Generator s
19、et Selection of generator sets for rural electrification systems FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote internationa
20、l 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 Specifications (PAS) and Guides (hereafter refer
21、red 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 liaising with the IEC also participate in
22、 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 express, as nearly as possible, an internat
23、ional 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 Committees in that sense. While all reasonabl
24、e 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 National Committees undertake to apply IEC Pub
25、lications 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 provides no marking procedure to indicate its approva
26、l and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual expe
27、rts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC P
28、ublication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced 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 P
29、ublication 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 techn
30、ical 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 Inter
31、national Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC 62257-7-3, which is a technical specification, has been prepared by IEC technical committee 82: Solar photovoltaic energy sy
32、stems. ARP 062-7-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.TS 62257-7-3 IEC:2008(E) 5 This document is based on IEC/PAS 62111; it cancels and replaces the relevant parts of IEC/PAS 62111. This technical specification is to be used i
33、n conjunction with the future parts of this series as and when they are published. The text of this technical specification is based on the following documents: Enquiry draft Report on voting 82/493/DTS 82/508/RVC Full information on the voting for the approval of this technical specification can be
34、 found in the report on voting indicated in the above table. This publication 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 small renewable energy and hybrid systems for rural electrification,
35、 can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the maintenance result date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be
36、 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. ARP 062-7-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SA
37、BS. 6 TS 62257-7-3 IEC:2008(E) INTRODUCTION The IEC 62257 series of documents intends to provide to different players involved in rural electrification projects (such as project implementers, project contractors, project supervisors, installers, etc.) documents for the setting-up of renewable energy
38、 and hybrid systems with a.c. voltage below 500 V, d.c. voltage below 750 V and power below 100 kVA. 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 on rural electrification
39、 concentrating on, but not specific to, developing countries. They must 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 development mechanisms at this time (CO 2emission, car
40、bon 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 possible. One of the main obje
41、ctives is to provide the minimum sufficient requirements, relevant to the field of application, that is, small renewable energy and hybrid off-grid systems. ARP 062-7-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SABS.TS 62257-7-3 IEC:2008(E
42、) 7 RECOMMENDATIONS FOR SMALL RENEWABLE ENERGY AND HYBRID SYSTEMS FOR RURAL ELECTRIFICATION Part 7-3: Generator set Selection of generator sets for rural electrification systems 1 Scope The purpose of this part of IEC 62257 is to specify the general requirements for the selection, sizing, erection a
43、nd operation of generator sets in decentralized rural electrification systems. It applies to all low voltage combustion engine electricity generator sets with a rated power up to 100 kVA, and designed for supplying electrical power to isolated sites used in systems as described in IEC/TS 62257-2. Th
44、is technical specification is not an exhaustive resource for the design, installation, operation or maintenance of generator sets but is more focused on recommendations to provide strategies on selection and criteria which may affect the use of such generation systems in a rural electrification proj
45、ect. Two cases will be considered as illustrated by Figure 1 to power a collective electrification system (microgrid) or an individual electrification system. the micropowersystem is composed of one generator set the micropowersystem is a hybrid one and the generator set is only part of it. This cas
46、e is addressed in the document dedicated to micropower system (IEC/TS 62257-9-1). Generating set alone Individual electrification system (IES) Or Collective electrification system (CES) Main switch Generating set Generating set Generating set in an hybrid system Other power sources Main switch Secon
47、dary switch Individual electrification system (IES) Or Collective electrification system (CES) IEC 444/08 Figure 1 General functional configuration of a generator set powered system ARP 062-7-3:2008This standard may only be used and printed by approved subscription and freemailing clients of the SAB
48、S. 8 TS 62257-7-3 IEC:2008(E) The aim of this technical specification is to provide users with the appropriate levels of reliability and safety of the equipment during its estimated service lifespan. It describes the minimum safety requirements and does not claim to be an exhaustive instruction manu
49、al or design specification. Compliance with this technical specification does not exempt any person, organization or corporation from the responsibility to comply with all other relevant regulations. This technical specification gives recommendations for the following types of generator sets: a) single phase; b) three phase; c) LV range up to 500 V - 50/60 Hz (see IEC/TS 62257-9-2). 2 Normative references The following referenced documents are essential for the application
