The curtailment of renewable energies, which arises due to the limitations of the electrical network, is becoming a hot topic. At eRoots Analytics and CITCEA-UPC we are working on analyzing modern grids with a high renewable penetration, with the associated challenges and subsequent solutions.
Power converters can provide support to the grid during short-circuit faults. This blog reviews the traditional fault current calculations to take into account converters support when solving unbalanced short-circuit faults. In addition, some current injection control strategies are studied and compared.
Power converters exhibit different behaviors when short-circuit faults arise. This blog explores the grid-support provided by converters during unbalanced faults and suggests strategies to improve it. These alternatives have been shown to yield near-optimal solutions, which supposes a substantial improvement compared to the response of traditional grid codes.