IEC 62670-2-2015 Photovoltaic concentrators (CPV) - Performance testing - Part 2 Energy measurement《聚光光伏 (CPV) 性能试验 第2部分 能源测量》.pdf

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

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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 (

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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