Hosting Capacity Analysis for Photovoltaic Rooftop in Indonesia

Abstract

The commitment to reduce emission in all over the world can be depicted in the Paris Agreement. As one of the countries involved, Indonesia made a target to increase the share of renewable energy by 23% in 2030. Furthermore, the incentive given by the government for the photovoltaic (PV) rooftop might attract more people and increase the awareness of renewable energy. However, the rising number of integrated PV rooftop might have an impact on the grid and the overall system. So, in order to make sure the reliability of the system, the hosting capacity is needed. It is a maximum limit of how much PV rooftop can be integrated into the distribution system without disturbing the performance of the system. By implementing the hosting capacity, is expected to avoid an unnecessary problem like overloading, overvoltage, protection failure or power quality problem. This paper discusses general information of technical and economic policy of PV rooftop in Indonesia and also a case to obtained hosting capacity. A radial system which consists of three transformers (A, B, and C) is observed. By using the active power method, the hosting capacity in each point of load and also along the feeder can be obtained. Next, the load is projected to increase by 10%, 20%, 30%, and up to 100% of installed capacity. Then, the hosting capacity and transformer ratio is calculated and analyzed. The result indicated that the PV limit from the government rules affects the hosting capacity calculation where the PV projection is equal as load projection. Finally, this paper is expected to be used as guidance or source of information for the electricity company before accepting more PV rooftop on the grid