Selectivity in DC-Microgrids: The Reaction Time Gap
Gehring J, Schwanninger R, Drexler K, Wunder B, Lorentz VRH, März M (2025)
Publication Type: Conference contribution
Publication year: 2025
Publisher: IEEE
City/Town: New York City
Pages Range: 1-6
Conference Proceedings Title: 2025 IEEE Seventh International Conference on DC Microgrids (ICDCM)
DOI: 10.1109/ICDCM63994.2025.11144670
Abstract
Short-circuit behavior in DC-microgrids differs significantly from AC systems, increasing the use of hybrid and solid-state circuit breakers. Due to much shorter breaking times, the delay between the fault occurring and breaker reaction must be considered for selectivity. This reaction time gap - resulting from delays in detection and actuation - is introduced and discussed in detail in this paper. While often negligible in AC systems, it becomes critical in fast DC protection. If not properly accounted for, this delay may compromise protection selectivity and lead to cascading switchoff operations within the system. The paper analyzes how current slopes and grid dynamics interact with breaker delays, affecting coordination. Countermeasures concerning reaction and short-circuit dynamics are discussed to mitigate the reaction time gap and ensure selective protection in DCmicrogrids.
Authors with CRIS profile
Raffael Schwanninger
Lehrstuhl für Leistungselektronik (LEE)
Bernd Wunder
Lehrstuhl für Leistungselektronik (LEE)
Martin März
Lehrstuhl für Leistungselektronik (LEE)
Involved external institutions
Germany (DE)How to cite
APA:
Gehring, J., Schwanninger, R., Drexler, K., Wunder, B., Lorentz, V.R.H., & März, M. (2025). Selectivity in DC-Microgrids: The Reaction Time Gap. In 2025 IEEE Seventh International Conference on DC Microgrids (ICDCM) (pp. 1-6). New York City: IEEE.
MLA:
Gehring, Johannes, et al. "Selectivity in DC-Microgrids: The Reaction Time Gap." Proceedings of the 2025 IEEE Seventh International Conference on DC Microgrids (ICDCM) New York City: IEEE, 2025. 1-6.
BibTeX: Download