Assessment of Solar Radiation Intermittency on Grid-Connected PV with storage system

Abstract

- Grid-tied distributed photovoltaic system has brought a significant use energy generated from solar, but it has proven to have a serious impact on the load characteristics in terms of quality, line losses, and power instability of networks it is connected on due to its unreliability and volatility. The penetration of large-scale photovoltaic (LSPV) energy into an existing power grid is expected to highly increase which leads to a significant effect on the grid operation. Solar Photovoltaic (PV) systems are having growing importance in the present time of our power system due to its non-polluting, minimum maintenance, and free fuel characteristics. This research analyzes the effect of solar radiation intermittence on solar photovoltaic generation. Also, a long-term solar radiation intermittent mitigation solution has been provided by proper assessment of solar behavior which led to a proper sizing of energy storage systems. The solar radiation prediction results were the prime consideration to size a storage system for an 8.5 MW case study. The storage system was a lithium-based technology due to its different advantages compared to the acid-based batteries.