The emergence of distributed energy resources can lead to congestions 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. In order to take into account this price difference, this paper presents an exact optimal power flow (OPF) model, formulated in terms of voltage and current. In the case of bipolar dc distribution grids, the common ground plane assumption cannot be used as 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 OPF problem formulation includes bilinear cost functions, therefore the locational marginal prices (LMP) are solved in a second step.

Original languageEnglish
Title of host publication2016 IEEE International Energy Conference, ENERGYCON 2016
Place of PublicationRed Hook, NY, USA
PublisherIEEE Society
Number of pages6
ISBN (Electronic)978-1-4673-8463-6
Publication statusPublished - 2016
Event2016 IEEE International Energy Conference, ENERGYCON 2016 - Leuven, Belgium
Duration: 4 Apr 20168 Apr 2016


Conference2016 IEEE International Energy Conference, ENERGYCON 2016

    Research areas

  • Bipolar dc grid, distributed power generation, optimal power flow, locational marginal prices

ID: 11401821