摘要： As the deployment of renewable energy sources, particularly photovoltaic (PV) systems, is proliferating worldwide, the need to increase distribution system (DS) hosting capacity to PV systems without system upgrade is a major concern. This paper proposes a stochastic method to calculate the DS hosting capacity to PV while ensuring that voltage requirements are not violated. In the proposed method, electric vehicle (EV) loads are also integrated to improve DS hosting capacity for PV systems. EVs are integrated at random locations of DS with different penetration levels to analyze their effects on the DS hosting capacity. The proposed method is demonstrated on the IEEE 123 node test feeder through several case studies. In these case studies, the OpenDSS and MATLAB are used to perform the simulations. The results show that the hosting capacity of PV in the IEEE 123 node test feeder can be improved approximately by 4% by penetrating EV loads to 12% of spot loads at each PV location.