An open-source tool for reliability analysis in radial distribution grids

We present an open-source software implementation of an approximate contingency enumeration approach for calculating reliability in distribution grids based on RELRAD. The tool is coded using the efficient programming language Julia, to ensure fast and scaleable calculations. The network topology is mapped as a graph. This allows us to efficiently determine load points affected by contingencies by using standard graph algorithms. The tool is demonstrated on a simple synthetic test system and an actual Norway distribution grid.