Practical Demonstration of High-impedance Fault Detection Technology in MV Distribution Network

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CIRED 2019 - 490.pdf (356.03 KB)
Paper number
490
Working Group Number
Conference name
CIRED 2019
Conference date
3-6 June 2019
Conference location
Madrid, Spain
Peer-reviewed
Yes
Short title
Convener
Authors
Tianyou, LI, Fujian Electricity Power Co. LTd., China
Chaoyi, Huang, Quanzhou Electric Power Supply Company, China
Abstract
In MV distribution network, theprobabilityofsingle-phase-to-groundfaultisashighas60% to 80%. Some of these faults can cause personal electric shocks or fire incidents, such as broken wires and wires discharged through the branches. They are classified as high-impedance faults (HIF). The existing faulty line selection and protection devices cannot reliably detect HIF. To ensurespublic safety，it is necessary to develop new technologies for HIF detection in distribution network.This article focuses on these issues, and introduces the research and demonstration of HIF detection technology in Fujian electricity Power Co. Ltd. In addition, artificial grounding tests were conducted to simulate ground faults through resistance, spherical gap, devices, wet earth and dry earth.
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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/20.500.12455/36
http://dx.doi.org/10.34890/76
ISSN
2032-9644
ISBN
978-2-9602415-0-1