IEC IEC TS 61724-3 Edition 1.0 2016-07 TECHNICAL SPECIFICATION colour inside Photovoltaic system performance Part 3: Energy evaluation method IEC TS 61724-3:2016-07(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2016 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form copyright or have an enquiry about obtaining additional rights to this publication, piease contact the address below or your local IEC member National Committee for further information. IEC Central Office Tel.: +41 22 919 02 11 3, rue de Varembé Fax: +41 22 919 03 00 CH-1211 Geneva 20 [email protected] Switzerland www.iec.ch About the IEC International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org The stand-alone application for consulting The world's leading online dictionary of electronic and the entire bibliographical information on IEC International Standards, electrical terms containing 20 000 terms and definitions in Technical Specifications, Technical Reports and other English and French, with equivalent terms in 15 additional documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical iPad. Vocabulary (IEV) online. IEc Glossary - std.iec.ch/glossary IEC publications search - www.iec.ch/searchpub The advanced search enables to find IEC publications by a 65 000 electrotechnical terminology entries in English and variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of iEC publications issued since 2002. Some entries have been committee,...). It also gives information on projects, replaced and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and CISPR. IEC Just Published - webstore.iec.ch/justpublished IEc Customer Service Centre - webstore.iec.ch/csc Stay up to date on all new IEC publications. Just Published If you wish to give us your feedback on this publication or details all new publications released. Available online and also once a month by email. need further assistance, please contact the Customer Service Centre: [email protected]. IEC IEC TS 61724-3 Edition 1.0 2016-07 TECHNICAL SPECIFICATION colour inside Photovoltaic system performance Part 3: Energy evaluation method INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 27.160 ISBN 978-2-8322-3531-7 Warning! Make sure that you obtained this publication from an authorized distributor. ? Registered tr IEC TS 61724-3:2016 @ IEC 2016 - 2 - CONTENTS FOREWORD. INTRODUCTION... Scope.. 1 2 Normative references. 8 3 Terms and definitions . Test scope, schedule and duration 4 5 Equipment and measurements .... 11 6 Procedure 6.1 Overview.. 6.2 Calculation and documentation of predicted energy and the method that will be used to calculate the expected energy 14 6.2.1 General .... 6.2.2 Definition of test boundary to align with intended system boundary .. .14 6.2.3 Definition of the meteorological inputs used for the prediction ... ..15 6.2.4 Definition of the PV inputs used for the prediction. 6.2.5 Definition of measured data that will be collected during the test..... 6.2.6 Definition of the model calculations .... 6.2.7 6.2.8 Uncertainty definition .... 6.3 Measurement of data.... .19 6.4 Identification of data associated with unavailability....... .19 6.5 Identification of erroneous data and replacement or adjustment of such data and preparation of model input dataset .19 General .... 6.5.1 .19 6.5.2 Data checks for each data stream ... .20 6.5.3 Shading of irradiance sensor ... .20 6.5.4 Calibration accuracy ..... .21 6.5.5 Final check. 6.5.6 Using data from multiple sensors...... 6.5.7 Substitution of back-up data for erroneous or missing