Improving photovoltaics grid integration through short time forecasting and self-consumption

  • Masa-Bote D
  • Castillo-Cagigal M
  • Matallanas E
 et al. 
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The uncertainty associated to the forecast of photovoltaic generation is a major drawback for the widespread introduction of this technology into electricity grids. This uncertainty is a challenge in the design and operation of electrical systems that include photovoltaic generation. Demand-Side Management (DSM) techniques are widely used to modify energy consumption. If local photovoltaic generation is available, DSM techniques can use generation forecast to schedule the local consumption. On the other hand, local storage systems can be used to separate electricity availability from instantaneous generation; therefore, the effects of forecast error in the electrical system are reduced. The effects of uncertainty associated to the forecast of photovoltaic generation in a residential electrical system equipped with DSM techniques and a local storage system are analyzed in this paper. The study has been performed in a solar house that is able to displace a residential user's load pattern, manage local storage and estimate forecasts of electricity generation. A series of real experiments and simulations have carried out on the house. The results of this experiments show that the use of Demand Side Management (DSM) and local storage reduces to 2% the uncertainty on the energy exchanged with the grid. In the case that the photovoltaic system would operate as a pure electricity generator feeding all generated electricity into grid, the uncertainty would raise to around 40%. © 2014 Elsevier Ltd.

Author-supplied keywords

  • Demand Side Management
  • Distributed PV
  • Energy forecast
  • Grid integration

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  • Álvaro GutiérrezUniversidad Politécnica de Madrid

  • D. Masa-Bote

  • M. Castillo-Cagigal

  • E. Matallanas

  • E. Caamaño-Martín

  • F. Monasterio-Huelín

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