Identification of Required Converter Models for a Simplified Short Circuit Current Calculation of DC Distribution Grids

DC distribution grids are subject of current research. One important aspect is a simplified short circuit current calculation for designing and selecting grid equipment. For a simplified short circuit current calculation method as less as possible models are desired. Therefore, this paper investigat...

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Bibliographic Details
Published in2019 54th International Universities Power Engineering Conference (UPEC) pp. 1 - 6
Main Authors Bleilevens, Raphael, Moser, Albert
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2019
Subjects
Bridge circuits
Capacitors
Integrated circuit modeling
Power system analysis computing
Power system faults
Power system planning
Power system simulation
Short-circuit currents
Smart grids
Switches
Topology
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Summary:DC distribution grids are subject of current research. One important aspect is a simplified short circuit current calculation for designing and selecting grid equipment. For a simplified short circuit current calculation method as less as possible models are desired. Therefore, this paper investigates the behavior of different converter topologies in case of a DC short circuit by conducting transient simulations. Based on the investigations the minimal acceptable number of required models for approximating the short circuit current contribution of converters is identified. As a result the minimal acceptable number of standard models of converters for a simplified short circuit current calculation is five. With these five standard models the short circuit current contribution of all converter topologies can be approximated accurately.
DOI:10.1109/UPEC.2019.8893512