Abstract
Variability of the available short-circuit power also implies variation of the fault level, which can potentially cause several protection problems in the electric networks. In this study, a novel protection method that is insensitive to the fault level changes caused by variable short-circuit power is presented. It relies on utilisation of symmetrical components of the short-circuit currents and on communication between the protection relays. The proposed method addresses the single phase to ground (SPG) faults occurring in directly grounded distribution networks, with focus on closed-loop medium voltage (MV) feeders. Case studies are presented, which demonstrate that the proposed protection scheme is capable of effectively detecting the SPG faults in closed-loop feeders with variable short-circuit power.
Originalsprog | Engelsk |
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Tidsskrift | The Journal of Engineering |
Vol/bind | 2018 |
Udgave nummer | 15 |
Sider (fra-til) | 1245-1251 |
Antal sider | 7 |
ISSN | 2051-3305 |
DOI | |
Status | Udgivet - okt. 2018 |
Begivenhed | The 14th International Conference on Developments in Power System Protection - The Europa Hotel, Belfast, Storbritannien Varighed: 12 mar. 2018 → 15 mar. 2018 Konferencens nummer: 14 |
Konference
Konference | The 14th International Conference on Developments in Power System Protection |
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Nummer | 14 |
Lokation | The Europa Hotel |
Land/Område | Storbritannien |
By | Belfast |
Periode | 12/03/2018 → 15/03/2018 |