Improve your SAIDI with Advanced Fault Passage Indication

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CIRED 2019 - 2323.pdf (486.28 KB)

Paper number

2323

Working Group Number

Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

Short title

Convener

Authors

Pocthier, Jean-Yves, Schneider Electric, France
Lamberti, Ludovic , Schneider Electric, France
Chollot, Yves , Schneider Electric, France

Abstract

Situation as of todayCustomer power outages are due to various causes: on overhead Medium Voltage distribution networks, these could be animals, vegetation, wind effect, cracked insulators, salt crust deposit on isolators, lighting strikes, etc.This creates a network fault that may normally be cleared or isolated by a circuit breaker located at the primary substation.Distribution networks are evolving with the integration of DER.In case of a fault, the fault current flows from multiple power sources: the traditional fault detection system fails and must be replaced with a directional fault detection system (ANSI 67/67N).Network devices fitted with such system indicate whether the fault is upstream or downstream, which helps to quickly reconfigure the MV network.Network devices providing ANSI 67N can also support ANSI 47 Broken Conductor.This specific earth fault occurs when a phase conductor does not touch the ground or touches a highly resistive soil.The primary substation CB may not trip, which might lead to a highly hazardous situation as the broken conductor is still live and people, animals, vehicles or building may touch it by accident.A device fitted with ANSI 47 function may help to solve this issue.Expected benefitsImproved SAIDI through an accurate faults detection and direction indication, quick network reconfiguration and fast restoration of supply to customersImproved safety with the fast detection of broken conductor occurrences.Conclusion.An advanced fault indication helps to faster restore power and make the network safer.

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Keywords

Publisher

AIM

Date

2019-06-03

Published in

CIRED 2019 Conference

Permanent link to this record

https://cired-repository.org/handle/20.500.12455/798
http://dx.doi.org/10.34890/1024

ISSN

2032-9644

ISBN

978-2-9602415-0-1