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Author González-Castillo, M.; Navarrete, P.; Tapia, T.; Lorca, A.; Olivares, D.; Negrete-Pincetic, M. doi  openurl
  Title Cleaning scheduling in photovoltaic solar farms with deterministic and stochastic optimization Type
  Year (up) 2023 Publication Sustainable Energy Grids & Networks Abbreviated Journal Sustain. Energy, Grids Netw.  
  Volume 36 Issue Pages 101147  
  Keywords Cleaning scheduling; Operations and maintenance; Optimization; Photovoltaic solar farms; Soiling  
  Abstract Soiling in solar panels causes a decrease in their ability to capturing solar irradiance, thus reducing the module's power output. To reduce losses due to soiling, the panels are cleaned. This cleaning represents a relevant share of the operation and maintenance cost for solar farms, for which there are different types of technologies available with different costs and duration. In this context, this paper proposes a method that allows scheduling the dates on which cleaning generates greater utility in terms of income from energy sales and costs associated with cleaning. For this, two optimization models that deliver a schedule of dates where the best income-cost balance is obtained, are proposed and compared: a deterministic Mixed Integer Linear Problem and a stochastic Markov Decision Process. Numerical results show that both models outperform the baseline case by similar to 4.6%. A simulator was built and both models were compared to the baseline case for 10,000 rainfall and irradiance scenarios. The stochastic model outperformed both models for all scenarios, thus proving that modeling rainfalls increases profitability in the face of uncertainty.  
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  ISSN 2352-4677 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:001095657200001 Approved  
  Call Number UAI @ alexi.delcanto @ Serial 1904  
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