A General Methodology for Short-circuit Calculations in Hybrid AC/DC Microgrids

In this paper, the issues related to short-circuit calculations in hybrid AC/DC microgrids are discussed. The reference standard for short-current calculations in DC systems is the IEC 61660, which provides a mathematical formulation of the problem. The standard only includes radial DC grids and does not consider a more complex system, such as meshed DC systems or a hybrid AC/DC microgrid. This paper proposes a generalized approach that can be used independently of the characteristics of the hybrid system. The proposed approach is applied to four test microgrids with different distributed sources and number of nodes and the results are comparedwith those obtained simulating the same grids with Neplan 360.

Automated summary

This paper discusses the issues related to short-circuit calculations in hybrid AC/DC microgrids and proposes a generalized approach. The approach is tested on four different microgrids and compared with results obtained through simulation using Neplan 360.