Mitigation of lock-in effect for compact substations with transformers meeting future EU efficiency regulations

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CIRED 2019 - 2089.pdf (674.78 KB)

Paper number

2089

Working Group Number

Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

Short title

Convener

Authors

Szewczyk, Radoslaw, DuPont, Poland
Trifigny, Philippe, Cahors, France
Duart, Jean-Claude, DuPont, Switzerland

Abstract

The subject addressed is a technical challenge faced by transformer manufacturers and users related to the possibility of replacing distribution transformers after new European regulation on transformer efficiency comes into force in 2021 (Tier2 of Commission Regulation 548/2014). The Tier 2 will further reduce losses allowed for new distribution transformers to be installed in Europe.The solution evaluated in the article is based on actual loading of transformers in rural substations (25-30%). Rarely are these transformers loaded to a higher loading and utilize their nameplate capacity. Therefore, it could be proposed to specify a reduced power rating for new units.The proposed de-rated transformers using insulation of higher thermal class would have sufficient capacity to supply the typical power demand. The use of higher class insulation materials in those transformers would allow safe overloading. It could also reduce Total Ownership Cost (TOC). The article introduces newly available innovative insulation material and analyses aspects of this new transformer solution vs. conventional transformer design.

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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/20.500.12455/729
http://dx.doi.org/10.34890/953

ISSN

2032-9644

ISBN

978-2-9602415-0-1