Robust high voltage network expansion planning considering multiple future renewable scenarios

Due to the rising share of renewable energy sources (RES) many electrical networks need to be expanded. In order to determine the necessary expansion measures a forecast of planning factors like the installed capacity of RES in the considered network area is required. From an expert perception a best-guess scenario describes the most probable development of those factors in the future and the network is usually designed for the best-guess scenario. When considering alternative scenarios however, the network could be insufficiently dimensioned. Hence, this paper presents a new methodology for planning a network which is technical feasible for a broad variety of scenarios and is therefore called a robust network. The resulting network expansion for a high voltage network planned for a best-guess scenario is compared to a robust network planned under consideration of multiple scenarios.