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Optimal Power Flow for Unbalanced Bipolar DC Distribution Grids. / Mackay, Laurens; Guarnotta, Robin; Dimou, Anastasios; Morales-Espana, German; Ramirez-Elizondo, Laura; Bauer, Pavol.

In: IEEE Access, Vol. 6, 2018, p. 5199-5207.

Research output: Scientific - peer-reviewArticle

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@article{1cf145c249834cb6a92b3518ad1f93cb,
title = "Optimal Power Flow for Unbalanced Bipolar DC Distribution Grids",
abstract = "The emergence of distributed energy resources can lead to congestion in distribution grids. DC distribution grids are becoming more relevant as more sources and loads connected to the low voltage grid use dc. Bipolar dc distribution grids with asymmetric loading can experience partial congestion resulting in a nodal price difference between the two polarities if a respective market model is applied. In order to take into account this price difference, this paper presents an optimal power flow (OPF) model formulated in terms of voltage and current. In the case of bipolar dc distribution grids, the single line approximation is no longer valid because current can flow in the neutral conductors as well. Moreover, loads and sources can be connected between any two nodes in the network. The proposed exact OPF formulation includes bilinear equations. The locational marginal prices (LMP) are derived by linearizing the problem at the optimal solution. Example cases show the various phenomena that can appear under asymmetric loading, such as pole-to-pole connections combined with pole-to-neutral connections, parallel sources, meshed grids and their effect on the LMP.",
keywords = "congestion managament, DC distribution grid, locational marginal prices, optimal power flow",
author = "Laurens Mackay and Robin Guarnotta and Anastasios Dimou and German Morales-Espana and Laura Ramirez-Elizondo and Pavol Bauer",
year = "2018",
doi = "10.1109/ACCESS.2018.2789522",
volume = "6",
pages = "5199--5207",
journal = "IEEE Access",
issn = "2169-3536",
publisher = "IEEE",

}

RIS

TY - JOUR

T1 - Optimal Power Flow for Unbalanced Bipolar DC Distribution Grids

AU - Mackay,Laurens

AU - Guarnotta,Robin

AU - Dimou,Anastasios

AU - Morales-Espana,German

AU - Ramirez-Elizondo,Laura

AU - Bauer,Pavol

PY - 2018

Y1 - 2018

N2 - The emergence of distributed energy resources can lead to congestion in distribution grids. DC distribution grids are becoming more relevant as more sources and loads connected to the low voltage grid use dc. Bipolar dc distribution grids with asymmetric loading can experience partial congestion resulting in a nodal price difference between the two polarities if a respective market model is applied. In order to take into account this price difference, this paper presents an optimal power flow (OPF) model formulated in terms of voltage and current. In the case of bipolar dc distribution grids, the single line approximation is no longer valid because current can flow in the neutral conductors as well. Moreover, loads and sources can be connected between any two nodes in the network. The proposed exact OPF formulation includes bilinear equations. The locational marginal prices (LMP) are derived by linearizing the problem at the optimal solution. Example cases show the various phenomena that can appear under asymmetric loading, such as pole-to-pole connections combined with pole-to-neutral connections, parallel sources, meshed grids and their effect on the LMP.

AB - The emergence of distributed energy resources can lead to congestion in distribution grids. DC distribution grids are becoming more relevant as more sources and loads connected to the low voltage grid use dc. Bipolar dc distribution grids with asymmetric loading can experience partial congestion resulting in a nodal price difference between the two polarities if a respective market model is applied. In order to take into account this price difference, this paper presents an optimal power flow (OPF) model formulated in terms of voltage and current. In the case of bipolar dc distribution grids, the single line approximation is no longer valid because current can flow in the neutral conductors as well. Moreover, loads and sources can be connected between any two nodes in the network. The proposed exact OPF formulation includes bilinear equations. The locational marginal prices (LMP) are derived by linearizing the problem at the optimal solution. Example cases show the various phenomena that can appear under asymmetric loading, such as pole-to-pole connections combined with pole-to-neutral connections, parallel sources, meshed grids and their effect on the LMP.

KW - congestion managament

KW - DC distribution grid

KW - locational marginal prices

KW - optimal power flow

UR - http://www.scopus.com/inward/record.url?scp=85040069986&partnerID=8YFLogxK

UR - http://resolver.tudelft.nl/uuid:1cf145c2-4983-4cb6-a92b-3518ad1f93cb

U2 - 10.1109/ACCESS.2018.2789522

DO - 10.1109/ACCESS.2018.2789522

M3 - Article

VL - 6

SP - 5199

EP - 5207

JO - IEEE Access

T2 - IEEE Access

JF - IEEE Access

SN - 2169-3536

ER -

ID: 37380459