Zokkia

Optimized Cleaning Cost and Schedule Based on Observed Soiling Conditions for Photovoltaic Plants in Central Saudi Arabia Russell K. Jones, Abdulaziz Baras, +5 authors Shafi A. Al-Hsaien Published 2016 Physics IEEE Journal of Photovoltaics For photovoltaic (PV) systems suffering energy loss due to an accumulation of soil, there is an optimum cleaning interval that balances the economic cost of lost revenues due to soiling loss with the cost of cleaning operations and, thereby, minimizes the total cost per unit energy delivered by the system and, thus, the levelized cost of electricity. This optimum interval may vary, depending on cleaning costs, as well as seasonal variations in soiling loss and energy production. In this work, a general expression has been derived for the optimal cleaning interval and then applied to losses actually observed over a one-year interval at a test site in central Saudi Arabia and fitted to a simple exponential loss model. The results show that costs attrib

Towards Real-Time Estimation of Solar Generation From Micro-Synchrophasor Measurements Emre C. Kara emrecan@slac.stanford.edu Grid Integration Systems and Mobility Group, SLAC National Accelerator Laboratory, Menlo Park, CA, USA Ciaran M. Roberts Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA Michaelangelo Tabone Energy and Resources Group, University of California, Berkeley, CA, USA Lilliana Alvarez Riverside Public Utilities, Riverside, CA, USA Duncan S. Callaway Energy and Resources Group, University of California, Berkeley, CA, USA Emma M. Stewart Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA, USA Submitted on Jul 11, 2016   Abstract This paper presents a set of methods for estimating the renewable energy generation downstream of a measurement device using real-world measurements. First, we present a generation disaggregation scheme where the only information availa