Title:
Sequential Tripping of Hybrid DC Circuit Breakers to Enhance the Fault Interruption Capability in Multi-Terminal DC Grids

dc.contributor.author Sun, Jingfan
dc.contributor.author Song, Y.
dc.contributor.author Saeedifard, Maryam
dc.contributor.author Meliopoulous, A. P.
dc.contributor.corporatename Georgia Institute of Technology. School of Electrical and Computer Engineering en_US
dc.date.accessioned 2018-11-06T21:10:24Z
dc.date.available 2018-11-06T21:10:24Z
dc.date.issued 2018-10
dc.description Presented at the CIGRE US National Committee 2018 Grid of the Future Symposium en_US
dc.description.abstract he hybrid solid-state DC circuit breakers (DC CBs) have become one of the most promising technologies to address the protection challenges within multi-terminal DC (MTDC) grids. Those breakers are designed in such a way that a large number of identical modules are connected in series to enable extinguishing the fault current with the arresters embedded in them. Conventionally, these modules are commanded to trip simultaneously, creating significant overvoltage and overcurrent stresses for the rest of the system. To attenuate these adverse impacts, in this paper, a sequential tripping method is proposed to improve the performance of hybrid DC CBs through commanding the main breakers to trip in a sequential manner. It has been verified that by the proposed method, fault clearance is expedited while the maximum overcurrent is reduced. To address the unbalanced energy absorptions among the different modules of the CB, a modified sequential tripping scheme is also proposed. By rescheduling the sequential tripping sequence, this method enables an equal redistribution of energy, which greatly reduces the risk of thermal overloading. Both of the proposed methods are evaluated and tested under a practical six-terminal DC grid in the PSCAD/EMTDC software environment. The performance and effectiveness of the proposed methods are confirmed by simulation results. en_US
dc.identifier.citation Sun, Jingfan, et al. (2018) "Sequential Tripping of Hybrid DC Circuit Breakers to Enhance the Fault Interruption Capability in Multi-Terminal DC Grids". Proceedings of the CIGRE US National Committee 2018 Grid of the Future Symposium (author's manuscript). en_US
dc.identifier.uri http://hdl.handle.net/1853/60517
dc.subject Multi-terminal DC (MTDC) grids en_US
dc.subject Hybrid DC circuit breaker en_US
dc.subject Sequential tripping en_US
dc.subject DC-side faults en_US
dc.title Sequential Tripping of Hybrid DC Circuit Breakers to Enhance the Fault Interruption Capability in Multi-Terminal DC Grids en_US
dc.type Text
dc.type.genre Post-print
dspace.entity.type Publication
local.contributor.author Saeedifard, Maryam
local.contributor.corporatename School of Electrical and Computer Engineering
local.contributor.corporatename College of Engineering
relation.isAuthorOfPublication c03c26d9-7a3e-4ba7-a533-fc43c88b0cc9
relation.isOrgUnitOfPublication 5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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