Utilisation of symmetrical components in a communication-based protection for loop MV feeders with variable short-circuit power

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceeding

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.
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Detaljer

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.
OriginalsprogEngelsk
TitelProccedings of the 14th IET International Conference on Developments in Power System Protection (DPSP), 2018
Publikationsdato12 mar. 2018
StatusUdgivet - 12 mar. 2018
PublikationsartForskning
Peer reviewJa
BegivenhedThe 14th International Conference on Developments in Power System Protection - The Europa Hotel, Belfast, Storbritannien
Varighed: 12 mar. 201815 mar. 2018
Konferencens nummer: 14

Konference

KonferenceThe 14th International Conference on Developments in Power System Protection
Nummer14
LokationThe Europa Hotel
LandStorbritannien
ByBelfast
Periode12/03/201815/03/2018

Kort

ID: 265089811