Palmer_energies-10-00181.pdf (3.93 MB)
Interpolating and estimating horizontal diffuse solar irradiation to provide UK-wide coverage: selection of the best performing models
journal contribution
posted on 2017-02-17, 13:52 authored by Diane Palmer, Ian Cole, Tom BettsTom Betts, Ralph GottschalgPlane-of-array irradiation data is a requirement to simulate the energetic performance of photovoltaic devices (PV). Normally, solar data is only available as global horizontal irradiation, for a limited number of locations, and typically in hourly time resolution. One approach to handling this restricted data is to enhance it initially by interpolation to the location of interest; next, it must be translated to plane-of-array (PoA) data by separately considering the diffuse and the beam components. There are many methods of interpolation. This research selects ordinary kriging as the best performing technique by studying mathematical properties, experimentation and leave-one-out-cross validation. Likewise, a number of different translation models has been developed, most of them parameterised for specific measurement setups and locations. The work presented identifies the optimum approach for the UK on a national scale. The global horizontal irradiation will be split into its constituent parts. Divers separation models were tried. The results of each separation algorithm were checked against measured data distributed across the UK. It became apparent that while there is little difference between procedures (14 Wh/m2 MBE, 12 Wh/m2 RMSE), the Ridley, Boland, Lauret equation (a universal split algorithm) consistently performed well. The combined interpolation/separation RMSE is 86 Wh/m2).
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
EnergiesVolume
10Issue
2Pages
181Citation
PALMER, D. ...et al., 2017. Interpolating and estimating horizontal diffuse solar irradiation to provide UK-wide coverage: selection of the best performing models. Energies, 10(2), 181.Publisher
© The Authors. Published by MDPI.Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/Acceptance date
2017-01-21Publication date
2017-02-05Copyright date
2017Notes
Special Issue "Solar Photovoltaics Trilemma: Efficiency, Stability and Cost Reduction 2017". This is an Open Access Article. It is published by MDPI under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/ISSN
1996-1073Publisher version
Language
- en