Experimental investigation of distribution grid restoration concepts using neighboring islanded LV-microgrids

dc.contributor.affiliationInstitute for High Voltage Technology – RWTH Aachen University
dc.contributor.affiliationInstitute for High Voltage Technology – RWTH Aachen University
dc.contributor.affiliationInstitute for High Voltage Technology – RWTH Aachen University
dc.contributor.authorLinnartz, Philipp
dc.contributor.authorSchulte, Nicolas
dc.contributor.authorSimon, Sandor
dc.contributor.countryGermany
dc.contributor.countryGermany
dc.contributor.countryGermany
dc.contributor.detailedauthorLinnartz, Philipp, Institute for High Voltage Technology – RWTH Aachen University, Germany
dc.contributor.detailedauthorSchulte, Nicolas, Institute for High Voltage Technology – RWTH Aachen University, Germany
dc.contributor.detailedauthorSimon, Sandor, Institute for High Voltage Technology – RWTH Aachen University, Germany
dc.date.accessioned2019-07-24T12:37:04Z
dc.date.available2019-07-24T12:37:04Z
dc.date.conferencedate3-6 June 2019
dc.date.issued2019-06-03
dc.description.abstractNowadays low voltage microgrids can be used for the emergency power supply of local loads. To reduce downtime and to increase the security of supply of the surrounding distribution grid, these microgrids might be connected via the medium voltage grid to neighboring low voltage grids as part of a bottom-up grid restoration concept. That way the potential of distributed energy resources installed in the distribution grid can be used to prolong the time of emergency power supply and expand the area to more customers.In this paper, a bottom-up grid restoration concept is experimentally investigated with special focus on the startup process of a microgrid and the distribution transformers until the successful synchronization of a neighboring microgrid.Central results are that with the investigated grid-forming units the energizing of the distribution transformers as well as the synchronization of a neighboring microgrid is possible. However, special attention has to be drawn to the high peak values of the inrush currents of the distribution transformers and to the according design of the grid-forming unit to endure or mitigate these phenomena (e.g. using a voltage soft-start function).
dc.description.conferencelocationMadrid, Spain
dc.description.conferencenameCIRED 2019
dc.description.openaccessYes
dc.description.peerreviewedYes
dc.description.sessionOperation, control and protection
dc.description.sessionidSession 3
dc.identifier.isbn978-2-9602415-0-1
dc.identifier.issn2032-9644
dc.identifier.urihttps://cired-repository.org/handle/20.500.12455/64
dc.identifier.urihttp://dx.doi.org/10.34890/136
dc.language.isoen
dc.publisherAIM
dc.relation.ispartProc. of the 25th International Conference on Electricity Distribution (CIRED 2019)
dc.relation.ispartofseriesCIRED Conference Proceedings
dc.titleExperimental investigation of distribution grid restoration concepts using neighboring islanded LV-microgrids
dc.title.number558
dc.typeConference Proceedings
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