Prognostic failure detection on overhead power distribution grid utilizing TDR measurement method

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CIRED 2019 - 1055.pdf (559.66 KB)

Paper number

1055

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Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

Short title

Convener

Authors

Masakazu, Matsui, Kansai Electric Power Co.-Inc., Japan
Taketani, Daisuike, Kansai Electric Power Co. Inc., Japan
Hayashi, Toshihiro, Kansai Electric Power Co. Inc., Japan
Morita, Tomohiko, Kansai Electric Power Co. Inc., Japan
Tohlu, Matsushima, Kyoto University, Japan
Hisakado, Takashi, Kyoto University, Japan
Osami, Wasa, Kyoto University, Japan

Abstract

We attempt to apply new method for locating fault point by injecting high-frequency short pulse into overhead distribution line. This method, which is called as TDR (Time Domain Reflectometry) measurement, enables us to detect the fault point easily by measuring propagation time of the pulse reflected due to impedance change at the fault point. In our prior research, we confirmed that TDR measurement method can be applied in overhead power distribution system, and weclarified the propagation characteristics [1].Because the pulse wave is reflected not only from the fault point but also from the branch point of the line, in order to sense reflected wave more precisely, we need to remove reflected waves other than fault point.In this paper, we propose new method which utilizes waveforms measured before and after the distribution failure. Through experiments, we confirmed improvement of new method’s sensing ability and verified the applicability of new method for prognostic failure detection.

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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/20.500.12455/264
http://dx.doi.org/10.34890/491

ISSN

2032-9644

ISBN

978-2-9602415-0-1