Projection of power generation between differently-oriented PV systems

Sven Killinger; Felix Braam; Björn Müller; Bernhard Wille-Haussmann; Russell McKenna

doi:10.1016/j.solener.2016.06.075

Projection of power generation between differently-oriented PV systems

Sven Killinger^*, Felix Braam, Björn Müller, Bernhard Wille-Haussmann, Russell McKenna

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

Conventional methods to estimate the photovoltaic (PV) power generation of an ensemble of PV systems are based on measured reference systems. However, these methods usually do not consider the module orientation in terms of azimuth and inclination angles. In reality, the orientation of PV systems can differ significantly, leading to large errors in this procedure. This paper presents an approach which improves the computation of the overall power from PV generation, based on measurements from reference systems, by including the module orientation for each system individually. The application of the methods to a dataset of 45 PV systems with five-minute resolution in Freiburg between 2010 and 2014 shows promising results. The relative root-mean-square error of the overall PV-power estimated from single reference plants improves by up to 19.7%. In addition, the performance of the methodology to estimate the global irradiance in the horizontal plane and at a target module orientation from the PV-power of a reference plant is assessed.

Original language	English
Pages (from-to)	153-165
Number of pages	13
Journal	Solar Energy
Volume	136
Early online date	9 Jul 2016
DOIs	https://doi.org/10.1016/j.solener.2016.06.075
Publication status	Published - 15 Oct 2016

Bibliographical note

Acknowledgments
The authors would like to thank two anonymous reviewers for their constructive comments on an earlier draft of this paper, as well as the Nagelschneider Foundation and the transmission grid operator TransnetBW for partially supporting this work.

Keywords

Inverse simulation
Module orientation
Photovoltaic reference units
Power projection

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Cite this

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title = "Projection of power generation between differently-oriented PV systems",

abstract = "Conventional methods to estimate the photovoltaic (PV) power generation of an ensemble of PV systems are based on measured reference systems. However, these methods usually do not consider the module orientation in terms of azimuth and inclination angles. In reality, the orientation of PV systems can differ significantly, leading to large errors in this procedure. This paper presents an approach which improves the computation of the overall power from PV generation, based on measurements from reference systems, by including the module orientation for each system individually. The application of the methods to a dataset of 45 PV systems with five-minute resolution in Freiburg between 2010 and 2014 shows promising results. The relative root-mean-square error of the overall PV-power estimated from single reference plants improves by up to 19.7%. In addition, the performance of the methodology to estimate the global irradiance in the horizontal plane and at a target module orientation from the PV-power of a reference plant is assessed.",

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note = "Acknowledgments The authors would like to thank two anonymous reviewers for their constructive comments on an earlier draft of this paper, as well as the Nagelschneider Foundation and the transmission grid operator TransnetBW for partially supporting this work.",

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AU - Killinger, Sven

AU - Braam, Felix

AU - Müller, Björn

AU - Wille-Haussmann, Bernhard

AU - McKenna, Russell

N1 - Acknowledgments The authors would like to thank two anonymous reviewers for their constructive comments on an earlier draft of this paper, as well as the Nagelschneider Foundation and the transmission grid operator TransnetBW for partially supporting this work.

PY - 2016/10/15

Y1 - 2016/10/15

N2 - Conventional methods to estimate the photovoltaic (PV) power generation of an ensemble of PV systems are based on measured reference systems. However, these methods usually do not consider the module orientation in terms of azimuth and inclination angles. In reality, the orientation of PV systems can differ significantly, leading to large errors in this procedure. This paper presents an approach which improves the computation of the overall power from PV generation, based on measurements from reference systems, by including the module orientation for each system individually. The application of the methods to a dataset of 45 PV systems with five-minute resolution in Freiburg between 2010 and 2014 shows promising results. The relative root-mean-square error of the overall PV-power estimated from single reference plants improves by up to 19.7%. In addition, the performance of the methodology to estimate the global irradiance in the horizontal plane and at a target module orientation from the PV-power of a reference plant is assessed.

AB - Conventional methods to estimate the photovoltaic (PV) power generation of an ensemble of PV systems are based on measured reference systems. However, these methods usually do not consider the module orientation in terms of azimuth and inclination angles. In reality, the orientation of PV systems can differ significantly, leading to large errors in this procedure. This paper presents an approach which improves the computation of the overall power from PV generation, based on measurements from reference systems, by including the module orientation for each system individually. The application of the methods to a dataset of 45 PV systems with five-minute resolution in Freiburg between 2010 and 2014 shows promising results. The relative root-mean-square error of the overall PV-power estimated from single reference plants improves by up to 19.7%. In addition, the performance of the methodology to estimate the global irradiance in the horizontal plane and at a target module orientation from the PV-power of a reference plant is assessed.

KW - Inverse simulation

KW - Module orientation

KW - Photovoltaic reference units

KW - Power projection

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VL - 136

SP - 153

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JO - Solar Energy

JF - Solar Energy

ER -

Projection of power generation between differently-oriented PV systems

Abstract

Bibliographical note

Keywords

UN SDGs

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