Abstract
Solar photovoltaic (PV) panels experience long-term
performance degradation as compared to their initial performance,
resulting in lower like-per-like efficiencies and performance ratios.
Manufacturers of solar photovoltaic modules normally guarantee a
lifespan of more than 20 years. To meet such commitments, it is
important to monitor and mitigate PV module degradation during
this period, as well as beyond, to recognize maintenance and repair
needs. Solar PV modules degrade over time, becoming less
effective, less reliable, and eventually unusable. The effects of
transient and performance loss rates on the output performance of
polycrystalline silicon (p-Si) solar PV modules are the focus of this
study. PV modules' electrical performance and solar energy
conversion efficiency change as solar irradiance and ambient
temperature change. A rise in ambient temperature or a decrease in
solar irradiance, for example, all result in a reduction in
performance.
Large variations in operating conditions due to uncontrollable
external parameters such as cloud movement and wind velocity, as
well as changes in factors external to PV systems such as unexpected
shading, inverter problems, and control failures, may trigger
transient performance changes on PV modules output. The data used
in this analysis were from the Warrenpoint site location of the
Electric Supply Board (ESB) for the years 2016-2020. Clear days in
winter, spring, summer, and autumn were caused by a rise in daily
sunshine hours in February, May, June, and September, according
to the output performance. Due to the highest amount of solar
irradiation at the site location, these days saw an increase in PV
output generation. According to the performance loss rates, the
median degradation rates in 2016 (4.5%/year to 14%/year) and 2017
(0.1%/year to 5.2%/year) are 8.40%/year and 3.87%/year,
respectively. This means that the degradation rate is greater than
1%/year, the hazardous probability is between 90% and 100%, and
a severity of 10 is given (With an associated failure of corrosion in
solder bonds). 2018 (-7.5%/year to 2.5%/year), 2019 (-16%/year to -23%/year), and 2020 (-5.1%/year to -10% /year) had median
degradation rates of -2.75%/year, -18.23%/year, and -5.2%/year,
respectively. This shows that the degradation rates are less than 1%
per year, and their hazardous probabilities range from severity rank
9 to 1, or 80% to 70% to 0% safety risk. All of these factors have a
negative impact on PV output performance.
performance degradation as compared to their initial performance,
resulting in lower like-per-like efficiencies and performance ratios.
Manufacturers of solar photovoltaic modules normally guarantee a
lifespan of more than 20 years. To meet such commitments, it is
important to monitor and mitigate PV module degradation during
this period, as well as beyond, to recognize maintenance and repair
needs. Solar PV modules degrade over time, becoming less
effective, less reliable, and eventually unusable. The effects of
transient and performance loss rates on the output performance of
polycrystalline silicon (p-Si) solar PV modules are the focus of this
study. PV modules' electrical performance and solar energy
conversion efficiency change as solar irradiance and ambient
temperature change. A rise in ambient temperature or a decrease in
solar irradiance, for example, all result in a reduction in
performance.
Large variations in operating conditions due to uncontrollable
external parameters such as cloud movement and wind velocity, as
well as changes in factors external to PV systems such as unexpected
shading, inverter problems, and control failures, may trigger
transient performance changes on PV modules output. The data used
in this analysis were from the Warrenpoint site location of the
Electric Supply Board (ESB) for the years 2016-2020. Clear days in
winter, spring, summer, and autumn were caused by a rise in daily
sunshine hours in February, May, June, and September, according
to the output performance. Due to the highest amount of solar
irradiation at the site location, these days saw an increase in PV
output generation. According to the performance loss rates, the
median degradation rates in 2016 (4.5%/year to 14%/year) and 2017
(0.1%/year to 5.2%/year) are 8.40%/year and 3.87%/year,
respectively. This means that the degradation rate is greater than
1%/year, the hazardous probability is between 90% and 100%, and
a severity of 10 is given (With an associated failure of corrosion in
solder bonds). 2018 (-7.5%/year to 2.5%/year), 2019 (-16%/year to -23%/year), and 2020 (-5.1%/year to -10% /year) had median
degradation rates of -2.75%/year, -18.23%/year, and -5.2%/year,
respectively. This shows that the degradation rates are less than 1%
per year, and their hazardous probabilities range from severity rank
9 to 1, or 80% to 70% to 0% safety risk. All of these factors have a
negative impact on PV output performance.
| Original language | English (Ireland) |
|---|---|
| Title of host publication | International Conference on Innovations in Energy Engineering & Cleaner Production IEECP21 |
| Publisher | International Conference on Innovations in Energy Engineering & Cleaner Production IEECP21 |
| Pages | 2-12 |
| Number of pages | 10 |
| Publication status | Published - 2021 |
