Comparing the Accuracy of Horizon Shade Modelling Based on Digital Surface Models Versus Fisheye Sky Imaging

Daniel Alvarez Mira; Martin Bartholomaus; Sebastian Poessl; Peter B. Poulsen; Sergiu V. Spataru

doi:10.1109/PVSC48317.2022.9938715

Comparing the Accuracy of Horizon Shade Modelling Based on Digital Surface Models Versus Fisheye Sky Imaging

Daniel Alvarez Mira, Martin Bartholomaus, Sebastian Poessl, Peter B. Poulsen, Sergiu V. Spataru

Technical University of Denmark

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

Fisheye sky imaging is a well established and accu-rate method for estimating shading in photovoltaic (PV) applications, however, it requires physical presence and measurements at the studied location. On the other hand, Digital Surface Models (DSM) can be used to estimate horizon shading remotely, and presents a more scalable method for evaluating potential PV installation site efficiently. Nowadays, high resolution DSM data is readily available in many countries, especially for urban environments. This has opened up new potential applications for more efficient shading estimation for aiding the deployment of PV in urban environments where horizon and nearby shading is significant. In this work, the accuracy of DSM-based methods to characterize horizon shading is assessed and compared to that obtained with fisheye imaging based methods. DSMs with different resolutions are studied and results show that high resolution DSMs are comparable. However, the accuracy of lower resolution DSMs will be highly influenced by the characteristics of the studied location.

Original language	English
Title of host publication	Proceedings of the IEEE 49th Photovoltaics Specialists Conference (PVSC)
Publication date	2022
Pages	0608-0613
ISBN (Print)	978-1-7281-6118-1
ISBN (Electronic)	978-1-7281-6117-4
DOIs	https://doi.org/10.1109/PVSC48317.2022.9938715
Publication status	Published - 2022
Event	49th IEEE Photovoltaic Specialists Conference - Philadelphia, United States Duration: 5 Jun 2022 → 10 Jun 2022 Conference number: 49 https://ieee-pvsc.org/PVSC49/index.php

Conference

Conference	49th IEEE Photovoltaic Specialists Conference
Number	49
Country/Territory	United States
City	Philadelphia
Period	05/06/2022 → 10/06/2022
Internet address	https://ieee-pvsc.org/PVSC49/index.php

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title = "Comparing the Accuracy of Horizon Shade Modelling Based on Digital Surface Models Versus Fisheye Sky Imaging",

abstract = "Fisheye sky imaging is a well established and accu-rate method for estimating shading in photovoltaic (PV) applications, however, it requires physical presence and measurements at the studied location. On the other hand, Digital Surface Models (DSM) can be used to estimate horizon shading remotely, and presents a more scalable method for evaluating potential PV installation site efficiently. Nowadays, high resolution DSM data is readily available in many countries, especially for urban environments. This has opened up new potential applications for more efficient shading estimation for aiding the deployment of PV in urban environments where horizon and nearby shading is significant. In this work, the accuracy of DSM-based methods to characterize horizon shading is assessed and compared to that obtained with fisheye imaging based methods. DSMs with different resolutions are studied and results show that high resolution DSMs are comparable. However, the accuracy of lower resolution DSMs will be highly influenced by the characteristics of the studied location.",

author = "Mira, {Daniel Alvarez} and Martin Bartholomaus and Sebastian Poessl and Poulsen, {Peter B.} and Spataru, {Sergiu V.}",

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doi = "10.1109/PVSC48317.2022.9938715",

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pages = "0608--0613",

booktitle = "Proceedings of the IEEE 49th Photovoltaics Specialists Conference (PVSC)",

note = "49th IEEE Photovoltaic Specialists Conference, PVSC ; Conference date: 05-06-2022 Through 10-06-2022",

url = "https://ieee-pvsc.org/PVSC49/index.php",

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Mira, DA, Bartholomaus, M, Poessl, S, Poulsen, PB & Spataru, SV 2022, Comparing the Accuracy of Horizon Shade Modelling Based on Digital Surface Models Versus Fisheye Sky Imaging. in Proceedings of the IEEE 49th Photovoltaics Specialists Conference (PVSC). pp. 0608-0613, 49th IEEE Photovoltaic Specialists Conference, Philadelphia, Pennsylvania, United States, 05/06/2022. https://doi.org/10.1109/PVSC48317.2022.9938715

Comparing the Accuracy of Horizon Shade Modelling Based on Digital Surface Models Versus Fisheye Sky Imaging. / Mira, Daniel Alvarez; Bartholomaus, Martin; Poessl, Sebastian et al.
Proceedings of the IEEE 49th Photovoltaics Specialists Conference (PVSC). 2022. p. 0608-0613.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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AU - Bartholomaus, Martin

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AU - Spataru, Sergiu V.

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AB - Fisheye sky imaging is a well established and accu-rate method for estimating shading in photovoltaic (PV) applications, however, it requires physical presence and measurements at the studied location. On the other hand, Digital Surface Models (DSM) can be used to estimate horizon shading remotely, and presents a more scalable method for evaluating potential PV installation site efficiently. Nowadays, high resolution DSM data is readily available in many countries, especially for urban environments. This has opened up new potential applications for more efficient shading estimation for aiding the deployment of PV in urban environments where horizon and nearby shading is significant. In this work, the accuracy of DSM-based methods to characterize horizon shading is assessed and compared to that obtained with fisheye imaging based methods. DSMs with different resolutions are studied and results show that high resolution DSMs are comparable. However, the accuracy of lower resolution DSMs will be highly influenced by the characteristics of the studied location.

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Comparing the Accuracy of Horizon Shade Modelling Based on Digital Surface Models Versus Fisheye Sky Imaging

Abstract

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