Analysis of Shading Effects in Solar PV System

Dushengere Bernadette; Maurice Twizerimana; Alexis Bakundukize; Bizabakoraho Jean Pierre; Nsekambabaye Theoneste

doi:doi:10.11648/j.ijrse.20211002.13

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Analysis of Shading Effects in Solar PV System

Dushengere Bernadette, Maurice Twizerimana, Alexis Bakundukize, Bizabakoraho Jean Pierre, Nsekambabaye Theoneste

Published in International Journal of Sustainable and Green Energy (Volume 10, Issue 2)

Received: 10 April 2021 Accepted: 26 April 2021 Published: 8 May 2021

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Abstract

Due to its advantages, the use of clean energy in general and especially solar PV systems offer a great solution to problems that people face in their everyday life. Generation of energy using solar PV system technology is cheaper and clean technology compared to one of the fossil fuels. Aside from its advantages, this technology still has some drawbacks that affect its performance where the ones caused by shadows are considered as one of the big problems. This research work showed laboratory experiments and simulations to see how the system is affected by shading where a 1.5 kWp PV system has been used for the study. The system has been simulated with PVsyst (7.0.6 version) and experimented within the University of Rwanda/ African Center of Excellence in Energy Studies for Sustainable Development (UR/ACE-ESD) High E-Tech Smart Grid Laboratory. Laboratory experiments showed that whatever shade is applied to the system, the DC voltage and current change (increases or decrease) and DC power decreases. In the simulation, it has been notified that the irradiance losses are dependent on the time of a day, sun position, and the rate of created shadow. From the simulated results, annual energy produced and near shading losses in the non-shaded system is 2373 kWh and 0% respectively while in the shaded system, the annual energy produced was 2055 kWh and 2.1% of near shading losses. This undoubtedly disturbs the performance of the power system as well as other related works. Based on the result for this work, shadow affects the performance of PV systems and the rate at which the PV system is affected depends on the shaded area, position, and how much radiation reaches that shaded area. This increases the system’s instability as it can lose its ability to generate power at the maximum due to the user control algorithm as well as degradation of the output that a PV panel can produce. Furthermore, investigations need to be carried out to modify this work. Providers of energy based on solar systems should sensitize shading issues towards their beneficiaries, and make a follow-up to installed systems so that users can give special attention to shading issues while they operate their system. It is recommended to continue this research within Rwandan Solar power plants considered as a case study for more investigation.

Published in	International Journal of Sustainable and Green Energy (Volume 10, Issue 2)
DOI	10.11648/j.ijrse.20211002.13
Page(s)	47-62
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

PV Systems, Shading Effect, Performance of PV Module, PVSYST Simulation

References

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APA Style

Dushengere Bernadette, Maurice Twizerimana, Alexis Bakundukize, Bizabakoraho Jean Pierre, Nsekambabaye Theoneste. (2021). Analysis of Shading Effects in Solar PV System. International Journal of Sustainable and Green Energy, 10(2), 47-62. https://doi.org/10.11648/j.ijrse.20211002.13

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ACS Style

Dushengere Bernadette; Maurice Twizerimana; Alexis Bakundukize; Bizabakoraho Jean Pierre; Nsekambabaye Theoneste. Analysis of Shading Effects in Solar PV System. Int. J. Sustain. Green Energy 2021, 10(2), 47-62. doi: 10.11648/j.ijrse.20211002.13

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AMA Style

Dushengere Bernadette, Maurice Twizerimana, Alexis Bakundukize, Bizabakoraho Jean Pierre, Nsekambabaye Theoneste. Analysis of Shading Effects in Solar PV System. Int J Sustain Green Energy. 2021;10(2):47-62. doi: 10.11648/j.ijrse.20211002.13

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@article{10.11648/j.ijrse.20211002.13,
  author = {Dushengere Bernadette and Maurice Twizerimana and Alexis Bakundukize and Bizabakoraho Jean Pierre and Nsekambabaye Theoneste},
  title = {Analysis of Shading Effects in Solar PV System},
  journal = {International Journal of Sustainable and Green Energy},
  volume = {10},
  number = {2},
  pages = {47-62},
  doi = {10.11648/j.ijrse.20211002.13},
  url = {https://doi.org/10.11648/j.ijrse.20211002.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijrse.20211002.13},
  abstract = {Due to its advantages, the use of clean energy in general and especially solar PV systems offer a great solution to problems that people face in their everyday life. Generation of energy using solar PV system technology is cheaper and clean technology compared to one of the fossil fuels. Aside from its advantages, this technology still has some drawbacks that affect its performance where the ones caused by shadows are considered as one of the big problems. This research work showed laboratory experiments and simulations to see how the system is affected by shading where a 1.5 kWp PV system has been used for the study. The system has been simulated with PVsyst (7.0.6 version) and experimented within the University of Rwanda/ African Center of Excellence in Energy Studies for Sustainable Development (UR/ACE-ESD) High E-Tech Smart Grid Laboratory. Laboratory experiments showed that whatever shade is applied to the system, the DC voltage and current change (increases or decrease) and DC power decreases. In the simulation, it has been notified that the irradiance losses are dependent on the time of a day, sun position, and the rate of created shadow. From the simulated results, annual energy produced and near shading losses in the non-shaded system is 2373 kWh and 0% respectively while in the shaded system, the annual energy produced was 2055 kWh and 2.1% of near shading losses. This undoubtedly disturbs the performance of the power system as well as other related works. Based on the result for this work, shadow affects the performance of PV systems and the rate at which the PV system is affected depends on the shaded area, position, and how much radiation reaches that shaded area. This increases the system’s instability as it can lose its ability to generate power at the maximum due to the user control algorithm as well as degradation of the output that a PV panel can produce. Furthermore, investigations need to be carried out to modify this work. Providers of energy based on solar systems should sensitize shading issues towards their beneficiaries, and make a follow-up to installed systems so that users can give special attention to shading issues while they operate their system. It is recommended to continue this research within Rwandan Solar power plants considered as a case study for more investigation.},
 year = {2021}
}

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TY  - JOUR
T1  - Analysis of Shading Effects in Solar PV System
AU  - Dushengere Bernadette
AU  - Maurice Twizerimana
AU  - Alexis Bakundukize
AU  - Bizabakoraho Jean Pierre
AU  - Nsekambabaye Theoneste
Y1  - 2021/05/08
PY  - 2021
N1  - https://doi.org/10.11648/j.ijrse.20211002.13
DO  - 10.11648/j.ijrse.20211002.13
T2  - International Journal of Sustainable and Green Energy
JF  - International Journal of Sustainable and Green Energy
JO  - International Journal of Sustainable and Green Energy
SP  - 47
EP  - 62
PB  - Science Publishing Group
SN  - 2575-1549
UR  - https://doi.org/10.11648/j.ijrse.20211002.13
AB  - Due to its advantages, the use of clean energy in general and especially solar PV systems offer a great solution to problems that people face in their everyday life. Generation of energy using solar PV system technology is cheaper and clean technology compared to one of the fossil fuels. Aside from its advantages, this technology still has some drawbacks that affect its performance where the ones caused by shadows are considered as one of the big problems. This research work showed laboratory experiments and simulations to see how the system is affected by shading where a 1.5 kWp PV system has been used for the study. The system has been simulated with PVsyst (7.0.6 version) and experimented within the University of Rwanda/ African Center of Excellence in Energy Studies for Sustainable Development (UR/ACE-ESD) High E-Tech Smart Grid Laboratory. Laboratory experiments showed that whatever shade is applied to the system, the DC voltage and current change (increases or decrease) and DC power decreases. In the simulation, it has been notified that the irradiance losses are dependent on the time of a day, sun position, and the rate of created shadow. From the simulated results, annual energy produced and near shading losses in the non-shaded system is 2373 kWh and 0% respectively while in the shaded system, the annual energy produced was 2055 kWh and 2.1% of near shading losses. This undoubtedly disturbs the performance of the power system as well as other related works. Based on the result for this work, shadow affects the performance of PV systems and the rate at which the PV system is affected depends on the shaded area, position, and how much radiation reaches that shaded area. This increases the system’s instability as it can lose its ability to generate power at the maximum due to the user control algorithm as well as degradation of the output that a PV panel can produce. Furthermore, investigations need to be carried out to modify this work. Providers of energy based on solar systems should sensitize shading issues towards their beneficiaries, and make a follow-up to installed systems so that users can give special attention to shading issues while they operate their system. It is recommended to continue this research within Rwandan Solar power plants considered as a case study for more investigation.
VL  - 10
IS  - 2
ER  -

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Author Information

Dushengere Bernadette

African Centre of Excellence in Energy for Sustainable Development (ACE-ESD), College of Science and Technology, University of Rwanda, Kigali, Rwanda
Maurice Twizerimana

African Centre of Excellence in Energy for Sustainable Development (ACE-ESD), College of Science and Technology, University of Rwanda, Kigali, Rwanda
Alexis Bakundukize

African Centre of Excellence in Energy for Sustainable Development (ACE-ESD), College of Science and Technology, University of Rwanda, Kigali, Rwanda
Bizabakoraho Jean Pierre

African Centre of Excellence in Energy for Sustainable Development (ACE-ESD), College of Science and Technology, University of Rwanda, Kigali, Rwanda
Nsekambabaye Theoneste

African Centre of Excellence in Energy for Sustainable Development (ACE-ESD), College of Science and Technology, University of Rwanda, Kigali, Rwanda

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APA Style

Dushengere Bernadette, Maurice Twizerimana, Alexis Bakundukize, Bizabakoraho Jean Pierre, Nsekambabaye Theoneste. (2021). Analysis of Shading Effects in Solar PV System. International Journal of Sustainable and Green Energy, 10(2), 47-62. https://doi.org/10.11648/j.ijrse.20211002.13

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ACS Style

Dushengere Bernadette; Maurice Twizerimana; Alexis Bakundukize; Bizabakoraho Jean Pierre; Nsekambabaye Theoneste. Analysis of Shading Effects in Solar PV System. Int. J. Sustain. Green Energy 2021, 10(2), 47-62. doi: 10.11648/j.ijrse.20211002.13

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AMA Style

Dushengere Bernadette, Maurice Twizerimana, Alexis Bakundukize, Bizabakoraho Jean Pierre, Nsekambabaye Theoneste. Analysis of Shading Effects in Solar PV System. Int J Sustain Green Energy. 2021;10(2):47-62. doi: 10.11648/j.ijrse.20211002.13

Copy | Download

@article{10.11648/j.ijrse.20211002.13,
  author = {Dushengere Bernadette and Maurice Twizerimana and Alexis Bakundukize and Bizabakoraho Jean Pierre and Nsekambabaye Theoneste},
  title = {Analysis of Shading Effects in Solar PV System},
  journal = {International Journal of Sustainable and Green Energy},
  volume = {10},
  number = {2},
  pages = {47-62},
  doi = {10.11648/j.ijrse.20211002.13},
  url = {https://doi.org/10.11648/j.ijrse.20211002.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijrse.20211002.13},
  abstract = {Due to its advantages, the use of clean energy in general and especially solar PV systems offer a great solution to problems that people face in their everyday life. Generation of energy using solar PV system technology is cheaper and clean technology compared to one of the fossil fuels. Aside from its advantages, this technology still has some drawbacks that affect its performance where the ones caused by shadows are considered as one of the big problems. This research work showed laboratory experiments and simulations to see how the system is affected by shading where a 1.5 kWp PV system has been used for the study. The system has been simulated with PVsyst (7.0.6 version) and experimented within the University of Rwanda/ African Center of Excellence in Energy Studies for Sustainable Development (UR/ACE-ESD) High E-Tech Smart Grid Laboratory. Laboratory experiments showed that whatever shade is applied to the system, the DC voltage and current change (increases or decrease) and DC power decreases. In the simulation, it has been notified that the irradiance losses are dependent on the time of a day, sun position, and the rate of created shadow. From the simulated results, annual energy produced and near shading losses in the non-shaded system is 2373 kWh and 0% respectively while in the shaded system, the annual energy produced was 2055 kWh and 2.1% of near shading losses. This undoubtedly disturbs the performance of the power system as well as other related works. Based on the result for this work, shadow affects the performance of PV systems and the rate at which the PV system is affected depends on the shaded area, position, and how much radiation reaches that shaded area. This increases the system’s instability as it can lose its ability to generate power at the maximum due to the user control algorithm as well as degradation of the output that a PV panel can produce. Furthermore, investigations need to be carried out to modify this work. Providers of energy based on solar systems should sensitize shading issues towards their beneficiaries, and make a follow-up to installed systems so that users can give special attention to shading issues while they operate their system. It is recommended to continue this research within Rwandan Solar power plants considered as a case study for more investigation.},
 year = {2021}
}

Copy | Download

TY  - JOUR
T1  - Analysis of Shading Effects in Solar PV System
AU  - Dushengere Bernadette
AU  - Maurice Twizerimana
AU  - Alexis Bakundukize
AU  - Bizabakoraho Jean Pierre
AU  - Nsekambabaye Theoneste
Y1  - 2021/05/08
PY  - 2021
N1  - https://doi.org/10.11648/j.ijrse.20211002.13
DO  - 10.11648/j.ijrse.20211002.13
T2  - International Journal of Sustainable and Green Energy
JF  - International Journal of Sustainable and Green Energy
JO  - International Journal of Sustainable and Green Energy
SP  - 47
EP  - 62
PB  - Science Publishing Group
SN  - 2575-1549
UR  - https://doi.org/10.11648/j.ijrse.20211002.13
AB  - Due to its advantages, the use of clean energy in general and especially solar PV systems offer a great solution to problems that people face in their everyday life. Generation of energy using solar PV system technology is cheaper and clean technology compared to one of the fossil fuels. Aside from its advantages, this technology still has some drawbacks that affect its performance where the ones caused by shadows are considered as one of the big problems. This research work showed laboratory experiments and simulations to see how the system is affected by shading where a 1.5 kWp PV system has been used for the study. The system has been simulated with PVsyst (7.0.6 version) and experimented within the University of Rwanda/ African Center of Excellence in Energy Studies for Sustainable Development (UR/ACE-ESD) High E-Tech Smart Grid Laboratory. Laboratory experiments showed that whatever shade is applied to the system, the DC voltage and current change (increases or decrease) and DC power decreases. In the simulation, it has been notified that the irradiance losses are dependent on the time of a day, sun position, and the rate of created shadow. From the simulated results, annual energy produced and near shading losses in the non-shaded system is 2373 kWh and 0% respectively while in the shaded system, the annual energy produced was 2055 kWh and 2.1% of near shading losses. This undoubtedly disturbs the performance of the power system as well as other related works. Based on the result for this work, shadow affects the performance of PV systems and the rate at which the PV system is affected depends on the shaded area, position, and how much radiation reaches that shaded area. This increases the system’s instability as it can lose its ability to generate power at the maximum due to the user control algorithm as well as degradation of the output that a PV panel can produce. Furthermore, investigations need to be carried out to modify this work. Providers of energy based on solar systems should sensitize shading issues towards their beneficiaries, and make a follow-up to installed systems so that users can give special attention to shading issues while they operate their system. It is recommended to continue this research within Rwandan Solar power plants considered as a case study for more investigation.
VL  - 10
IS  - 2
ER  -

Copy | Download