Calculating the shading reduction coefficient of photovoltaic system efficiency using the anisotropic sky scattering model

Bin Hu; Jiawei Wu; Peng Li; Wei Sun; Jinyu Xiao

doi:10.1016/j.gloei.2022.08.004

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Calculating the shading reduction coefficient of photovoltaic system efficiency using the anisotropic sky scattering model

Clean Energy | 更新时间：2026-06-12

- Calculating the shading reduction coefficient of photovoltaic system efficiency using the anisotropic sky scattering model
- Calculating the shading reduction coefficient of photovoltaic system efficiency using the anisotropic sky scattering model
- 全球能源互联网(英文) 2022年5卷第4期页码：375-384
- 作者机构：
  
  1. State Nuclear Electric Power Planning Design & Research Institute Co., Ltd, No.6 Dijin Road,Beijing,PR China,100095
  2. Global Energy Interconnection Group Co., Ltd, No.8 Xuanwumen Inner Street, Xicheng District,Beijing,PR China,100000
- 作者简介：
- 基金信息：
- DOI：10.1016/j.gloei.2022.08.004
  中图分类号：
- 网络首发：2022-09-10，
  
  纸质出版：2022-09-10
- 稿件说明：
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Bin Hu, Jiawei Wu, Peng Li, 等. Calculating the shading reduction coefficient of photovoltaic system efficiency using the anisotropic sky scattering model[J]. 全球能源互联网(英文), 2022,5(4):375-384.

Bin Hu, Jiawei Wu, Peng Li, et al. Calculating the shading reduction coefficient of photovoltaic system efficiency using the anisotropic sky scattering model[J]. Global Energy Interconnection, 2022, 5(4): 375-384.
Bin Hu, Jiawei Wu, Peng Li, 等. Calculating the shading reduction coefficient of photovoltaic system efficiency using the anisotropic sky scattering model[J]. 全球能源互联网(英文), 2022,5(4):375-384. DOI： 10.1016/j.gloei.2022.08.004.

Bin Hu, Jiawei Wu, Peng Li, et al. Calculating the shading reduction coefficient of photovoltaic system efficiency using the anisotropic sky scattering model[J]. Global Energy Interconnection, 2022, 5(4): 375-384. DOI： 10.1016/j.gloei.2022.08.004.

摘要

Abstract

The front-row shading reduction coefficient is a key parameter used to calculate the system efficiency of a photovoltaic (PV) power station. Based on the Hay anisotropic sky scattering model

the variation rule of solar radiation intensity on the surface of the PV array during the shaded period is simulated

combined with the voltage–current characteristics of the PV modules

and the shadow occlusion operating mode of the PV array is modeled. A method for calculating the loss coefficient of front shadow occlusion based on the division of the PV cell string unit and Hay anisotropic sky scattering model is proposed. This algorithm can accurately evaluate the degree of influence of the PV array layout

wiring mode

array spacing

PV module specifications

and solar radiation on PV power station system efficiency. It provides a basis for optimizing the PV array layout

reducing system loss

and improving PV system efficiency.

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