Comparison of solar radiation and PV generation variability: system dispersion in the UK. Issue 5 (27th April 2017)

• Record Type: Journal Article
• Authors: Palmer, Diane; Koubli, Elena; Cole, Ian; Betts, Thomas; Gottschalg, Ralph
• Is Part Of: IET renewable power generation. Volume 11:Issue 5(2017)
• Page Start: 550
• Page End: 557
• Publication Date: 2017-04-27
• Subjects: photovoltaic power systems -- solar power stations -- current distribution; solar radiation -- PV generation variability -- system dispersion -- UK -- geographical distribution -- aggregate irradiance variability reduction -- grid distribution -- UK solar farms -- current distribution -- site clustering; Renewable energy sources -- Periodicals; 333.79405
• DOI: 10.1049/iet-rpg.2016.0768
• Languages: English
• ISSNs: 1752-1416

Abstract

Abstract : This study investigates how the number and geographical distribution of solar installations may reduce aggregate irradiance variability and therefore lessen the overall impact of photovoltaic (PV) on grid distribution. The current distribution of UK solar farms is analysed. It is found that variability is linked to site clustering. Other factors may include distance and direction between sites, proximity to coast, local topography and weather patterns (i.e. wind, cloud etc.). These factors do not operate in isolation but form a complex and unpredictable system. The UK solar farm fleet currently comprises a range of system sizes which, when viewed en masse, reduces temporal variation in PV generation. The predominant southwest–northeast direction of solar farm groups is also beneficial in reducing output variability within grid supply point areas.