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 paper, 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
Original language | English |
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Pages (from-to) | 1245-1251 |
Number of pages | 7 |
Journal | The Journal of Engineering |
Volume | 2018 |
Issue number | 15 |
Early online date | 18 Jul 2018 |
DOIs | |
Publication status | Published - 31 Oct 2018 |
Event | 14th International Conference on Developments in Power System Protection: The 14th International Conference on Developments in Power System Protection (DPSP), Belfast, UK - Europa Hotel, Belfast, United Kingdom Duration: 12 Mar 2018 → 15 Mar 2018 https://events.theiet.org/dpsp/index.cfm?utm_source=redirect&utm_medium=any&utm_campaign=dpsp |
Keywords
- symmetrical components
- communication-based protection
- phase to ground fault
- loop feeder
- variable fault currents
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Dynamic Power Systems Laboratory
Graeme Burt (Manager)
Electronic And Electrical EngineeringFacility/equipment: Facility