IEC_TS_62257-2-2004.pdf

TECHNICAL SPECIFICATION IEC TS 62257-2 First edition2004-05 Recommendations for small renewable energy and hybrid systems for rural electrification Part 2:From requirements to a range of electrification systems Reference number IEC/TS 62257-2:2004(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editionsThe IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,thebase publication incorporating amendment 1 and the base publication incorporatingamendments 1 and 2.Further information on IEC publicationsThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating tothis publication,including its validity,is available in the IEC Catalogue ofpublications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publicationsThe on-line catalogue on the IEC web site(http:/www.iec.ch/searchpub/cur_fut.htm)enables you to search by a variety of criteria including text searches,technicalcommittees and date of publication.On-line information is also available onrecently issued publications,withdrawn and replaced publications,as well ascorrigenda.IEC Just Published This summary of recently issued publications(http:/www.iec.ch/online_news/justpub/jp_entry.htm)is also available by email.Please contact the CustomerService Centre(see below)for further information.Customer Service CentreIf you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.chTel:+41 22 919 02 11Fax:+41 22 919 03 00LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TECHNICAL SPECIFICATION IECTS 62257-2 First edition2004-05 Recommendations for small renewable energy and hybrid systems for rural electrification Part 2:From requirements to a range of electrification systems PRICE CODE IEC 2004 Copyright-all rights reserved No part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch XB For price,see current catalogueCommission Electrotechnique InternationaleInternational Electrotechnical Commission LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 TS 62257-2 IEC:2004(E)CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.8 3 Terms and definitions.9 4 Methodology for non technical preliminary studies.10 4.1 Place and role of preliminary studies in a decentralized rural electrification project.10 4.2 Specifications of the preliminary study.10 4.3 The stages of a socio-economic study.15 5 Classification of electrification systems.15 5.1 Introduction to a range of systems.15 5.2 Users requirements.16 5.3 Typology of qualitative requirements.16 5.4 Typology of quantitative requirements.17 5.5 Classification for electricity services provided.18 5.6 Assisted selection of production subsystem.18 5.7 Typology of decentralized electrification systems.18 6 Electrification systems architecture.21 6.1 General.21 6.2 General presentation of isolated electrification systems.21 6.3 Combining subsystems.22 6.4 Functional diagrams.24 6.5 Related references.25 6.6 Limits between production,distribution and demand/application subsystems.25 6.7 Summary of the different electrification system types.25 Annex A(informative)Stages of a socio-economic study(see Clause 4).26 A.1 General.26 A.2 Preparation phase.26 A.3 Drawing up of the questionnaires,choice of surveyors and choice of sample.27 A.4 Conducting the survey-Analysis of the results.27 A.5 Extrapolation of the results.27 Annex B(informative)Analysis of the type of receivers installed versus types of use and demonstrating seasonable variability(where applicable)(see Clause 5).28 B.1 Domestic use.28 B.2 Analysis of the type of receivers versus usage types.30 Annex C(informative)Supply quality indicators for isolated electrification systems(see Clause 5).32 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.TS 62257-2 IEC:2004(E)3