This paper applies a deterministic and stochastic approach to estimate the hosting capacity and likelihood of an overload at the cable cabinet or transformer due customers with solar PV. Distribution networks at 10 kV, suppling feeders with 1300 MV/LV transformers, have been studied. The paper also quantifies whether overvoltage or overload limits the hosting capacity first. Voltage and current measurements from a Northern Sweden distribution network have been applied in the paper. Illustrations are used to show the concept and important results are obtained. It is shown in the paper the hosting capacity is determined more often by overload than by overvoltage. In this paper, only the hosting capacity with reference to the overload limit is considered. The results obtained for the data used show that the overload limit is exceeded more often for transformers than for cable cabinets. The stochastic approach applied to the cable cabinets yields a small probability to exceed the hosting capacity.
ISBN för värdpublikation: 978-1-83953-591-8 (elektroniskt);
Funder: Skellefteå Kraft; Umeå Energi