Harmonic analysis and mitigation in distribution grids with high penetration of power inverters

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CIRED 2019 - 1022.pdf (870.47 KB)

Paper number

1022

Working Group Number

Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

Short title

Convener

Authors

Schori, Stefan, Bern University of Applied Sciences, Switzerland
Höckel, Michael, Bern University of Applied Sciences, Switzerland
Dalessandro, Luca, Schaffner Group, Switzerland
Rupp, Adrian, ewz, Switzerland
Greuter, Jürg, ewz, Switzerland
Heiniger, Lukas, Bern University of Applied Sciences BFH, Switzerland

Abstract

Inverters of large heat pumps in an urban low voltage grid generate current harmonics and cause consequently significant variations of the respective voltage harmonics. The voltage level at each grid point is not only influenced by the operation of such inverters, but higher harmonic voltage amplitudes can be expected, caused by the sum of all loads in the grid. The paper provides a comprehensive harmonic analysis of a typical urban distribution grid including heat pumps and presents insights on the variations and impact on the voltage profile of the 15th harmonic currents. An active harmonic filter was installed to enhance the power quality, by compensating the harmonic currents and by improving the voltage profile at grid points close-by the heat pumps.

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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/20.500.12455/246
http://dx.doi.org/10.34890/476

ISSN

2032-9644

ISBN

978-2-9602415-0-1