Measuring PD propagation in complex MV distribution network configurations

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CIRED 2019 - 757.pdf (789.56 KB)

Paper number

757

Working Group Number

Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

Short title

Convener

Authors

Barrios Pereira, Sonia Raquel, Ormazabal Corporate Technology, Spain
Gilbert, Ian, Ormazabal Corporate Technology A.I.E, Spain
Orue, Iñaki, Ormazabal Corporate Technology A.I.E, Spain
Mulroy, Patrick, Ormazabal Corporate Technology A.I.E, Spain
Hurtado, Aritz, Ormazabal Corporate Technology A.I.E, Spain

Abstract

The presence of Partial Discharge (PD) activity in an electrical network indicates potential future failures that could be prevented knowing the PD source location. Although several location techniques are used, the accurate location in complex configurations is a difficult task because the PD pulse is attenuated, dispersed and reflected according to the cable system configuration. The pulse shape is also distorted and measurements are influenced by high amplitude noise and other external interference. This paper investigates the behaviour of PD pulses propagation in a laboratory controlled medium voltage network that allows reconfiguration and repeatability under the same conditions. An online PD monitoring system is used to register the PD activity and a time-of-flight (TOF) method is applied to determine the time of arrival of pulses at different points of this network. The pulse propagation velocity is subsequently calculated. The main objective is to determine if the presence of different components, like transformers, switchgears, substations, busbars, etc. significantly affects propagation. An average propagation velocity throughout the cable system will be calculated. It will be determined if this value is useful in determining PD source location and its relative error.

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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/20.500.12455/140
http://dx.doi.org/10.34890/280

ISSN

2032-9644

ISBN

978-2-9602415-0-1