Combined Medium Voltage and Low Voltage simulation to accurately determine the location of Voltage Problems in large Grids

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CIRED 2019 - 1630.pdf (1.11 MB)

Paper number

1630

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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

van Westering, Werner, Alliander DNO and Delft University of Technology, Netherlands
Droste, Barbera, Alliander DNO, Netherlands
Hellendoorn, Hans, Delft University of Technology, Netherlands

Abstract

Distribution Network Operators (DNOs) traditionally treat Low Voltage (LV) and Medium Voltage (MV) networks as two separate entities. Both voltage levels have their own set of assumptions and design policies. This paper proposes a fast load flow algorithm suitable to simulate both the LV and MV network in a single simulation. The algorithm is applied to the grid of Alliander DNO. Using this method, congestion problems in both the LV and MV grid can be determined with greater detail. Using a case study it was shown that identical customer load scenarios produce vastly differently results if the MV network is taken into account. While the absolute number of voltage problems was in the same order of magnitude, the location of these problems overlapped only 20\%. The lack of overlap has a severe implication, namely that searching for congestion by only simulating LV networks yields the wrong voltage problems. This conclusion calls for network design using integral MV/LV simulations.

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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/20.500.12455/495
http://dx.doi.org/10.34890/720

ISSN

2032-9644

ISBN

978-2-9602415-0-1