A novel intervals-based algorithm for the distribution short-circuit calculation

• Published in: Electrical engineering Vol. 101; no. 4; pp. 1145 - 1162
• Main Authors: Obrenić, Marko Z., Vidović, Predrag M., Strezoski, Luka V.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.12.2019; Springer Nature B.V
• Subjects: Algorithms; Distribution management; Economics and Management; Electrical Engineering; Electrical Machines and Networks; Energy Policy; Engineering; Hydraulic turbines; Intervals; Mathematical analysis; Networks; Original Paper; Power Electronics; Short circuits; Uncertainty; Wind turbines; Windpowered generators; Short circuit; Uncertainty; Correlation; Distribution network; Interval arithmetic
• ISSN: 0948-7921; 1432-0487
• DOI: 10.1007/s00202-019-00853-2

In this paper, a novel intervals-based distribution short-circuit calculation algorithm is proposed. In distribution networks, there are various renewable energy-based generators (solar panels, wind generators, small hydro turbines, etc.), as well as loads with uncertain generation and consumption. Therefore, short-circuit calculation has to consider all these uncertainties. The algorithm proposed in this paper deals with above-mentioned uncertainties, as well as correlations among them. Algorithm testing is performed on two test examples of distribution networks, 6-bus and 1003-bus, for the verification of its robustness and efficiency on real-life, large-scale systems. The results demonstrate that the proposed algorithm provides highly accurate results and that it is able to solve real-life short-circuit problems with a higher precision than the traditional deterministic short-circuit calculation algorithms.