Projection of power generation between differently-oriented PV systems

Sven Killinger*, Felix Braam, Björn Müller, Bernhard Wille-Haussmann, Russell McKenna

*Corresponding author for this work

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Conventional methods to estimate the photovoltaic (PV) power generation of an ensemble of PV systems are based on measured reference systems. However, these methods usually do not consider the module orientation in terms of azimuth and inclination angles. In reality, the orientation of PV systems can differ significantly, leading to large errors in this procedure. This paper presents an approach which improves the computation of the overall power from PV generation, based on measurements from reference systems, by including the module orientation for each system individually. The application of the methods to a dataset of 45 PV systems with five-minute resolution in Freiburg between 2010 and 2014 shows promising results. The relative root-mean-square error of the overall PV-power estimated from single reference plants improves by up to 19.7%. In addition, the performance of the methodology to estimate the global irradiance in the horizontal plane and at a target module orientation from the PV-power of a reference plant is assessed.

Original languageEnglish
Pages (from-to)153-165
Number of pages13
JournalSolar Energy
Volume136
Early online date9 Jul 2016
DOIs
Publication statusPublished - 15 Oct 2016

Keywords

  • Inverse simulation
  • Module orientation
  • Photovoltaic reference units
  • Power projection

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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