This paper outlines the initial results for power quality analysis (PQA) of a single phase 3.3kWp photovoltaic (PV) system with battery storage connected to a low-voltage system at the Council for Scientific and Industrial Research (CSIR), Pretoria campus. The purpose of this study is to understand the harmonic distortion behaviours for three different sky conditions: clear, moderate and cloudy condition. The measured current harmonic distortions are categorized to different order intervals as per NRS 097-2-1:2017. The categorized maximum current harmonic distortions of each hour interval within a day are compared against the requirements stipulated in NRS 097-2-1:2017. The measured current harmonic distortions are inclusive of existing harmonics in the building, hence it is difficult to quantify the harmonics generated from the solar PV. The future plans include measurement of these harmonics in the building without PV to determine the baseline and then calculate the harmonic distortions originating from the PV system for different sky conditions.
Reference:
May, S.I. et al. 2019. Power quality analysis of a grid tied 3.3 kWp rooftop solar photovoltaic system with battery storage. In: 5TH Southern African Solar Energy Conference (SASEC 2018), 25-27 June 2018, Blue Waters Hotel, Durban, South Africa
May, S. I., Basappa Ayanna, M., Pratt, L. E., Mienie, S., & Roro, K. T. (2019). Power quality analysis of a grid tied 3.3 kWp rooftop solar photovoltaic system with battery storage. http://hdl.handle.net/10204/11039
May, Siyasanga I, Manjunath Basappa Ayanna, Lawrence E Pratt, S Mienie, and Kittessa T Roro. "Power quality analysis of a grid tied 3.3 kWp rooftop solar photovoltaic system with battery storage." (2019): http://hdl.handle.net/10204/11039
May SI, Basappa Ayanna M, Pratt LE, Mienie S, Roro KT, Power quality analysis of a grid tied 3.3 kWp rooftop solar photovoltaic system with battery storage; 2019. http://hdl.handle.net/10204/11039 .
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