1、 IEC 62670-2 Edition 1.0 2015-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Photovoltaic concentrators (CPV) Performance testing Part 2: Energy measurement Concentrateurs photovoltaques (CPV) Essai de performances Partie 2: Mesure de lnergie IEC 62670-2:2015-05(en-fr) colour inside THIS PUBLICATION
2、 IS COPYRIGHT PROTECTED Copyright 2015 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, 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 e
3、ither IEC or IECs member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local IEC member National Committee for further information. D
4、roits de reproduction rservs. Sauf indication contraire, aucune partie de cette publication ne peut tre reproduite ni utilise sous quelque forme que ce soit et par aucun procd, lectronique ou mcanique, y compris la photocopie et les microfilms, sans laccord crit de lIEC ou du Comit national de lIEC
5、du pays du demandeur. Si vous avez des questions sur le copyright de lIEC ou si vous dsirez obtenir des droits supplmentaires sur cette publication, utilisez les coordonnes ci-aprs ou contactez le Comit national de lIEC de votre pays de rsidence. IEC Central Office Tel.: +41 22 919 02 11 3, rue de V
6、aremb Fax: +41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzerland www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC
7、publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment might have been published. IEC Catalogue - webstore.iec.ch/catalogue The stand-alone application for consulting the entire
8、bibliographical information on IEC International Standards, Technical Specifications, Technical Reports and other documents. Available for PC, Mac OS, Android Tablets and iPad. IEC publications search - www.iec.ch/searchpub The advanced search enables to find IEC publications by a variety of criteri
9、a (reference number, text, technical committee,). It also gives information on projects, replaced and withdrawn publications. IEC Just Published - webstore.iec.ch/justpublished Stay up to date on all new IEC publications. Just Published details all new publications released. Available online and als
10、o once a month by email. Electropedia - www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 30 000 terms and definitions in English and French, with equivalent terms in 15 additional languages. Also known as the International Electrotechn
11、ical Vocabulary (IEV) online. IEC Glossary - std.iec.ch/glossary More than 60 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002. Some entries have been collected from earlier publications of IEC TC 37,
12、 77, 86 and CISPR. IEC Customer Service Centre - webstore.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. A propos de lIEC La Commission Electrotechnique Internationale (IEC) est la premire organis
13、ation mondiale qui labore et publie des Normes internationales pour tout ce qui a trait llectricit, llectronique et aux technologies apparentes. A propos des publications IEC Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possdez ldition la plus rcente
14、, un corrigendum ou amendement peut avoir t publi. Catalogue IEC - webstore.iec.ch/catalogue Application autonome pour consulter tous les renseignements bibliographiques sur les Normes internationales, Spcifications techniques, Rapports techniques et autres documents de lIEC. Disponible pour PC, Mac
15、 OS, tablettes Android et iPad. Recherche de publications IEC - www.iec.ch/searchpub La recherche avance permet de trouver des publications IEC en utilisant diffrents critres (numro de rfrence, texte, comit dtudes,). Elle donne aussi des informations sur les projets et les publications remplaces ou
16、retires. IEC Just Published - webstore.iec.ch/justpublished Restez inform sur les nouvelles publications IEC. Just Published dtaille les nouvelles publications parues. Disponible en ligne et aussi une fois par mois par email. Electropedia - www.electropedia.org Le premier dictionnaire en ligne de te
17、rmes lectroniques et lectriques. Il contient plus de 30 000 termes et dfinitions en anglais et en franais, ainsi que les termes quivalents dans 15 langues additionnelles. Egalement appel Vocabulaire Electrotechnique International (IEV) en ligne. Glossaire IEC - std.iec.ch/glossary Plus de 60 000 ent
18、res terminologiques lectrotechniques, en anglais et en franais, extraites des articles Termes et Dfinitions des publications IEC parues depuis 2002. Plus certaines entres antrieures extraites des publications des CE 37, 77, 86 et CISPR de lIEC. Service Clients - webstore.iec.ch/csc Si vous dsirez no
19、us donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 62670-2 Edition 1.0 2015-05 INTERNATIONAL STANDARD NORME INTERNATIONALE Photovoltaic concentrators (CPV) Performance testing Part 2: Energy measurement Concentrateurs photovoltaques (CPV) Es
20、sai de performances Partie 2: Mesure de lnergie INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 27.160 ISBN 978-2-8322-2627-8 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale W
21、arning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 IEC 62670-2:2015 IEC 2015 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3
22、Terms and definitions 7 4 Description of the method 9 5 Selection of subset under test . 10 6 Operation, maintenance and cleaning 10 7 Downtimes and unavailability . 11 8 Parasitic energy. 11 9 Data acquisition . 11 9.1 General requirements . 11 9.1.1 Data acquisition system (DAS) 11 9.1.2 Sampling
23、interval . 12 9.2 Mandatory measurements . 13 9.2.1 General . 13 9.2.2 Direct normal irradiance. 13 9.2.3 Global plane of array irradiance . 13 9.2.4 Ambient air temperature 14 9.2.5 Wind speed . 14 9.2.6 Electrical power or energy . 14 9.2.7 Cold source temperature (actively cooled systems only) 14
24、 10 Data post-processing . 14 10.1 Calculation of energy from integrated power values 14 10.2 Calculation of energy from discrete power values . 15 10.3 Calculation of the DNI time series . 15 10.4 Calculation of the active AC or DC energy 17 11 Calculation of the performance ratio 18 11.1 General .
25、 18 11.2 AC performance ratio 18 11.3 DC performance ratio 19 12 Derived parameters . 20 13 Report . 20 Annex A (informative) Some suggested ways to filter data in order to identify incorrect data 22 Annex B (informative) Best practices for power plant energy measurement 23 Annex C (normative) Optio
26、nally derived parameters. 24 C.1 General . 24 C.2 Energy Production Rate (EPR) 24 C.3 Capacity Factor (CF) . 24 Figure 1 Nomenclature of angles used in Formula (2) 17 IEC 62670-2:2015 IEC 2015 3 Table 1 Steps of the energy measurement procedure 10 Table 2 Mandatory measurements. 13 4 IEC 62670-2:201
27、5 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ PHOTOVOLTAIC CONCENTRATORS (CPV) PERFORMANCE TESTING Part 2: Energy measurement FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (
28、IEC National Committees). The 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 Report
29、s, Publicly Available Specifications (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
30、- governmental organizations liaising 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 o
31、f IEC on technical matters express, 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
32、accepted by IEC National Committees 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 intern
33、ational uniformity, IEC National 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 th
34、e latter. 5) IEC itself does not 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
35、 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 experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other
36、 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 Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Us
37、e 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 Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent
38、rights. International Standard IEC 62670-2 has been prepared by IEC technical committee 82: Solar photovoltaic energy systems. The text of this standard is based on the following documents: FDIS Report on voting 82/940/FDIS 82/969/RVD Full information on the voting for the approval of this standard
39、can be 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. IEC 62670-2:2015 IEC 2015 5 A list of all parts in the IEC 62670 series, published under the general title Photovoltaic Concentrators (CPV) Performa
40、nce testing, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability 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
41、 be reconfirmed, withdrawn, replaced by a revised edition, or amended. 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
42、 using a colour printer. 6 IEC 62670-2:2015 IEC 2015 INTRODUCTION IEC 62670 series establishes requirements for evaluating concentrator PV performance. It is written to be applicable to all concentrator PV technologies that have a geometric concentration ratio greater than 3 and require tracking. In
43、cluded in the IEC 62670 series of standards are definitions of the standard conditions and methods to be used for assessing CPV performance. IEC 62670-1 defines a standard set of conditions so that power ratings noted on data sheets and nameplates have a standard basis. IEC 62670-2 describes an on-s
44、un, measurement based method for determining the energy output and performance ratio for CPV arrays, assemblies and power plants. IEC 62670-3 (under consideration) describes methods for providing a CPV power assessment under a set of standard conditions, enabling assessments both indoors and outdoor
45、s. IEC 62670-4 (under consideration) describes methods for calculating the prospective electrical energy output of CPV modules, arrays, assemblies and power plants based on the measurements carried out in IEC 62670-2. IEC 62670-2:2015 IEC 2015 7 PHOTOVOLTAIC CONCENTRATORS (CPV) PERFORMANCE TESTING P
46、art 2: Energy measurement 1 Scope This part of IEC 62670 specifies the minimum requirements for determining the energy output and performance ratio for CPV modules, arrays, assemblies and power plants using an on- sun, measurement based method. The purpose of this International Standard is to define
47、 testing methods, to establish a standard energy measurement for CPV modules, arrays, assemblies and power plants, and to specify the minimum reporting information. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable
48、for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 62670-1, Photovoltaic concentrators (CPV) Performance testing Part 1: Standard conditions ISO/IEC 17025, General re
49、quirements for the competence of testing and calibration laboratories ISO 8601:2004, Data elements and interchange formats Information interchange Representation of dates and times ISO 9060, Solar energy Specification and classification of instruments for measuring hemispherical solar and direct solar radiation ISO 9847, Solar energy Calibration of field pyranometers by comparison to a reference
