Protection and Earthing Requirements of Low Voltage AC and DC Distribution Networks Interfaced by Smart Transformers

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CIRED 2019 - 2002.pdf (515.95 KB)

Paper number

2002

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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

Emhemed, Abdullah, Department of Electronic and Electrical Engineering- University of Strathclyde, United Kingdom
Smith, Kyle, Department of Electronic and Electrical Engineering University of Strathclyde, United Kingdom
Burt , Graeme M., University of Strathclyde, United Kingdom
Black, Paul, WSP, United Kingdom
Kazerooni, Ali, WSP, United Kingdom
Donoghue, Anthony, SP Energy Networks, United Kingdom
Eves, Michael, SP Energy networks, United Kingdom

Abstract

Electrification of more transport and heat will place increasing demand on LV networks for which they have not been designed for. This can potentially overload MV/LV transformers and LV cables, and may result in voltage drops outside statutory voltage limits. Deployment of solid state smart transformers (ST) at secondary substations has recently been considered as an alternative approach to address such issues. However, their deployment will lead to a radical change in the operation of associated LV networks and, in particular, protection systems. Therefore this paper investigates in detail the impact of a smart transformer deployment at a secondary substation on the performance of conventional MV/LV protection, and provide recommendation on suitable earthing and protection for LVDC and hybrid AC/DC distribution networks interfaced by a smart transformer. 

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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/20.500.12455/684
http://dx.doi.org/10.34890/905

ISSN

2032-9644

ISBN

978-2-9602415-0-1