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

Thumbnail Image
Files
CIRED 2019 - 1630.pdf (1.11 MB)
Paper number
1630
Working Group Number
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.
Table of content
Keywords
Publisher
AIM
Date
2019-06-03
Published in
CIRED 2019 Conference
Permanent link to this record
https://cired-repository.org/handle/20.500.12455/495
http://dx.doi.org/10.34890/720
ISSN
2032-9644
ISBN
978-2-9602415-0-1