First results concerning localisation of earthfaults in compensated 20-kV-networks based on travelling waves

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CIRED 2019 - 66.pdf (1007.74 KB)

Paper number

66

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Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

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Convener

Authors

DRUML, Gernot, Sprecher Automation GmbH, Germany
SKRBINJEK, Oliver, Energie Steiermark, Austria
HIPP, Walter, Energie Steiermark, Austria
Fickert, Lothar, TU-Graz, Austria
Schmidt, Uwe, University Zittau, Germany
Schegner, Peter, Technische Universitaet Dresden, Germany

Abstract

Due to today´s increased demands on grid operation management, new methods for earth fault localization and detection are needed. The fault localisation should be performed as quickly as possible and under the condition, that the fault current at the fault location will not be significantly increased. Fault location method based on the travelling wave (TW) theory is already in use in some countries for transmission networks. In today's 20 kV grid, almost every feeder in the substation has capacitive sensors to supervise the voltage of the three phases. First tests have shown that these sensors are suitable for voltage measurement up to some MHz. Due to the change of technology in the last 10 years the discussion starts, to use travelling waves also in distribution networks. The task is to evaluate, if it is possible to make, for compensated networks, a central distance estimation in secondary substations for the distribution network, based on the evaluation of the voltages travelling waves.  This paper will present the first results of this evaluation. 

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Publisher

AIM

Date

2019-06-03

Published in

CIRED 2019 Conference

Permanent link to this record

https://cired-repository.org/handle/20.500.12455/160
http://dx.doi.org/10.34890/320

ISSN

2032-9644

ISBN

978-2-9602415-0-1