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GB/T 42766-2023Specifications for solar energy resource assessment of photovoltaic power generation (English PDF)

光伏发电太阳能资源评估规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

May 23, 2023

Implementation date

May 23, 2023

Scope

GB/T 42766-2023 is the English-translated version of 光伏发电太阳能资源评估规范.

This document specifies what a solar energy resource assessment for photovoltaic power generation must cover: the solar resource on the horizontal plane, the solar resource on the plane of the photovoltaic array, and the assessment of the meteorological factors that weigh most heavily on photovoltaic generation, together with the requirements for preparing the assessment report, and it describes the corresponding verification methods.

The document applies to the calculation, analysis and assessment of the solar resource at the planning, design and post-project evaluation stages of photovoltaic generation projects of every kind.

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Document preview — GB/T 42766-2023

National Standard of the People's Republic of China

ICS: 07.060
Classification: A 47

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Evaluation content
5 Horizontal Solar Energy Resource Assessment Requirements
6 Requirements for assessment of solar energy resources on the surface of photovoltaic arrays
7 Requirements for assessment of high impact meteorological factors of photovoltaic power generation
8 Evaluation Report Preparation Requirements
9 Verification method
Appendix B (Informative) Calculation Method of Probable Guaranteed Value of Annual Exposure
Appendix C (informative) Calculation method of total radiation on the surface of photovoltaic arrays in different installation methods
Appendix D (informative) Calculation method of solar radiation increase rate received by the back of double-sided photovoltaic modules
Reference

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting.

1 Scope

This document specifies the content of solar resource assessment for photovoltaic power generation, horizontal plane solar resource, photovoltaic array surface solar Requirements for the evaluation of high-impact meteorological factors for photovoltaic power generation and the requirements for the preparation of evaluation reports, and describe the corresponding verification methods.

This document is applicable to the calculation, analysis and evaluation of solar energy resources in the planning, design, post-evaluation and other stages of various photovoltaic power generation projects.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 31155-2014 Solar resource grade total radiation

GB/T 31156-2014 Solar resource measurement total radiation

GB/T 37525-2019 Guidelines for Calculation of Direct Solar Radiation

GB/T 37526-2019 Solar Energy Resource Assessment Method

GB 50797-2012 Code for Design of Photovoltaic Power Stations

QX/T 436-2018 Climatic Feasibility Demonstration Specification Calculation of Wind Resistance Parameters

QX/T 548-2020 Temperature Influence Grade of Solar Cell Power Generation Efficiency

3 Terms and Definitions

The following terms and definitions defined in GB/T 37526-2019 apply to this document.

3.1 Total radiation on the photovoltaic array plane

The sum of the direct radiation received by the surface of the photovoltaic array, the scattered radiation and the reflected radiation of the underlying surface.

3.2 Representative year

Under the actual atmospheric conditions, it can represent the average solar resource status of a photovoltaic power generation project for one year.

3.3 Representative day

Under ideal atmospheric conditions, the day on which the total horizontal surface radiation is closest to the average daily radiation of the month.

4 Evaluation content

Solar resource assessment for photovoltaic power generation should include three aspects, the specific contents are.

a) Analysis and evaluation of solar energy resources on the horizontal plane, mainly the calculation, analysis and evaluation of the solar radiation energy reaching the equipment placed horizontally

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

Similar standards

GB/T 20481-2026|GB/T 20486-2026|GB/T 22482-2026|GB/T 28593-2026|GB/T 33670-2026|GB/T 33675-2026

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