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BSI PD IEC TS 63156:2021

BSI PD IEC TS 63156:2021

$142.49

Photovoltaic systems. Power conversion equipment performance. Energy evaluation method

Published By Publication Date Number of Pages
BSI 2021 26
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This document describes the procedure for evaluating the energy conversion performance of stand-alone or grid-connected power conversion equipment (PCE) used in PV systems. This procedure includes the calculation of inverter performance to anticipate the energy yield of PV systems. This evaluation method is based on standard power efficiency calculation procedures for PCE found in IEC 61683 and IEC 62891, but provides additional methods for evaluating the expected overall energy efficiency for a particular location given solar load profiles. This document can be used as the energy evaluation method for PCE in IEC TS 61724-3, which defines a procedure for evaluating a PV system’s actual energy production relative to its modeled or expected performance.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
5 FOREWORD
7 INTRODUCTION
8 1 Scope
2 Normative references
3 Terms and definitions
12 4 Workflow of energy conversion efficiency evaluation method
4.1 General
13 4.2 Flow of energy conversion efficiency evaluation test
Figures
Figure 1 – Flowchart of energy conversion efficiency evaluation test
14 4.3 Flow of energy conversion efficiency calculation
Figure 2 – Flowchart of energy conversion efficiency calculation
15 5 Energy efficiency measurement conditions
5.1 Energy efficiency test circuit
Figure 3 – Power conversion equipment test circuits
16 5.2 Test conditions
6 Static energy conversion efficiency evaluation
7 Dynamic energy conversion efficiency evaluation
8 Weighted energy conversion efficiency calculation
Tables
Table 1 – Weighted energy conversion efficiency
17 Annexe A (informative)Rate of change of irradiance
A.1 Analysis of irradiance profile
19 Figure A.1 – Example of irradiance profile
Figure A.2 – Histogram of the irradiance in Figure A.1 (< 2 W•m−2•s−1)
20 A.2 Rate of change of irradiance
Figure A.3 – Histogram of rate of change of irradiance (>2 W•m−2•s−1)
Table A.1 – Weighted factor ratios for Fn=1 to 7
Table A.2 – Weighted factor ratios for J1, J2, etc.
21 Annexe B (informative)Static energy conversion efficiency test sequence
Table B.1 – Static energy efficiency
22 Annexe C (informative)Dynamic energy conversion efficiency test sequence
Figure C.1 – Test sequence for fluctuations betweenmedium and high irradiation intensities
23 Table C.1 – Dynamic energy efficiency test with input power from 30 % to 100 %
Table C.2 – Dynamic energy efficiency data
24 Annexe D (informative)Weighted energy conversion efficiency
Table D.1 – Static energy conversion efficiency
Table D.2 – Dynamic energy conversion efficiency
Table D.3 – Weighted total conversion efficiency
25 Bibliography

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BSI PD IEC TS 63156:2021
$142.49