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Monitoring thousands of distributed PV systems in the UK: Energy - - PowerPoint PPT Presentation

Jan 31, 2024 321 likes •442 views

Monitoring thousands of distributed PV systems in the UK: Energy production and performance Jamie Taylor* 1 , Jonathan Leloux 2 , Aldous M. Everard 1 , Julian Briggs 1 , Alastair Buckley 1 1 Sheffield Solar, University of Sheffield 2 Instituto de

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Monitoring thousands of distributed PV systems in the UK:

Energy production and performance

Jamie Taylor*1, Jonathan Leloux2, Aldous M. Everard1, Julian Briggs1, Alastair Buckley1

1 Sheffield Solar, University of Sheffield 2 Instituto de Energía Solar, Universidad Politécnica de Madrid, Spain

* Corresponding Author jamie.taylor@sheffield.ac.uk

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Sheffield Solar

  • Part of Project Sunshine – “The

science behind food and energy sustainability”

  • Funded

by the UoS Higher Education Innovation Fund and the EPSRC (EP/I032541/1, EP/K022229/1)

  • To

promote knowledge transfer and new links between industry, society and academia

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Microgen Database

  • Users donate PV generation

data and receive FREE performance checking tools – Performance Ratio (PR) and peer-to-peer

  • Free to access performance

maps, reports

  • Active forum
  • Generation predictor tool

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Microgen Database

  • 7000+ distributed PV systems
  • 5-10k more on the way
  • Historic data spanning up to 7 years
  • Supplied

by a combination

  • f

homeowners and commercial sources

  • Mostly domestic scale (< 4kWp)
  • Various

time resolutions – from 5 minutely to monthly

  • After data validation and filtering, 2500+

systems are analysed

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PR calculation

𝑄𝑆(𝜀𝑢) = 𝜃𝑏𝑑ℎ𝑗𝑓𝑤𝑓𝑒(𝜀𝑢) 𝜃𝑡𝑞𝑓𝑑 = 𝐻𝑓𝑜𝑓𝑠𝑏𝑢𝑗𝑝𝑜(𝜀𝑢) 𝜃𝑡𝑞𝑓𝑑 × 𝐽𝑠𝑠𝑏𝑒𝑗𝑏𝑢𝑗𝑝𝑜(𝜀𝑢)

Global Horizontal Irradiation (GHI) interpolated from UK Met Office ground based pyranometers [1] as per Colantuono et al. [2]. GHI is transposed to the Global Tilted Irradiation (GTI) using Klein & Theilacker [3]. Provided by donor Calculated from donor’s generation readings

[1] Met Office, “Met Office Integrated Data Archive System (MIDAS) Land and Marine Surface Stations Data (1853-current),” NCAS British Atmospheric Data Centre, 2012. [Online]. Available: http://catalogue.ceda.ac.uk/. [Accessed 17 03 2015]. [2] G. Colantuono et al., “Monitoring nationwide ensembles of PV generators: Limitations and

  • uncertainties. The case of the UK,” Solar Energy, 2014.

[3] J. A. Klein and J. C. Theilacker, “An Algorithm for Calculating Monthly-Average Radiation on Inclined Surfaces,” Journal of Solar Energy Engineering, 1981. Jamie Taylor - Sheffield Solar 5

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Regional Annual Yield

UK Mean = 886 kWh/kWp/Year

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Region Mean Annual Yield 2013 (kWh/kWp/yr) Mean Annual Yield Any Year (kWh/kWp/yr) 3 1004 978 5E 1000 974 4 980 955 5W 977 952 13 951 926 1 945 921 12 930 906 2 930 906 6 907 883 9E 879 856 10 874 851 11 866 844 7E 857 834 14 848 826 15 829 807 9S 777 757 Mean 910 886

Jamie Taylor - Sheffield Solar

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Yearly-integrated PR

Mean: 84% ± 3%

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Seasonal evolution of monthly PR:

Peaks Spring/Autumn, troughs Summer/Winter

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State of the art

PR increase of ~12% between 2004 and 2012 (1.5% / year)

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Conclusions

  • Mean annual yield in UK is 886 𝑙𝑋ℎ/𝑙𝑋

𝑞/𝑧𝑓𝑏𝑠

  • Mean yearly-integrated PR for the years 2012-2014 was 84 ± 3%
  • Demonstrated presence of seasonal trends in mean monthly PR,

with peaks in Spring/Autumn and troughs in Summer/Winter, consistent with France and Belgium [1, 2]

  • Observed increase in the overall performance of PV systems:

clear increasing trend with a mean gradient of 1.5% per year. This increase in overall performance is coherent with the results

  • f other studies that were recently carried out in other

countries [1, 2, 3, 4].

[1]

  • J. Leloux et al., “Review of the performance of residential PV systems in Belgium,” Renewable and Sustainable Energy Reviews, 2012.

[2] J. Leloux et al., “Review of the performance of residential PV systems in France,” Renewable and Sustainable Energy Reviews, 2012. [3] A. Woyte, “Monitoring of photovoltaic systems: good practices and systematic analyses,” 29th European PV Solar Energy Conference and Exhibition, 2014. [4] D. C. Jordan and S. R. Kurtz, “Reliability and Geographic Trends of 50,000 Photovoltaic Systems in the USA,” 29th European PV Solar Energy Conference and Exhibition, 2014. 11 Jamie Taylor - Sheffield Solar

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Questions?

Annual Yield Yearly-integrated PR Monthly PR State-of-the-art

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