Techno-economic impact of solar power system integration on a DSO

The drastic cost decrease of the photovoltaic (PV) panels leads to their high penetration in the distribution grid. However, it may result in a revenue decrease for the distribution system operator (DSO) and cause a number of technical issues. The focus of the paper is to analyze the techno-economic impact of different scenarios of PV panels integration under different penetration levels behind the secondary substation. The study is based on a real data provided by the local DSO. The results suggest that the peak demand may increase drastically due to simultaneous charging of the batteries from the market. The comparison of two scenarios of the PV+BESS system operation showed that focus at peak reduction is profitable for the bigger share of customers, than focus at increase of the self-consumption rate.