Optimal Power Flow for Unbalanced Bipolar DC Distribution Grids

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...

Symmetrical Component Decomposition of DC Distribution Systems

Employing bipolar dc distribution systems introduces the possibility of imbalance in the system. To analyze these systems it is crucial to create novel modelling techniques. This paper presents a method to decompose dc distribution systems into symmetrical components. The presented method simplifies the analysis of balanced, unbalanced, and...

Stability and Decentralized Control of Plug-and-Play DC Distribution Grids

Changes in distribution grids pose significant challenges with respect to the control and management of these grids. Stability and decentralized control are vital to ensure the availability and accessibility of plug-and-play dc distribution grids that are (temporarily) without communication. Therefore, this paper presents guidelines for these...

Power Flow Control Converter for Meshed LVDC

Meshed LVDC distribution grid is considered to be more efficient and reliable than AC distribution network.<br/>This applies in particular when there is a significant portion of DC sources, storage, and loads in the grid. Its<br/>optimal operation, however, is not inherent. The power flow in distribution network can suffer from congestion<br/...

Capacitive Grounding for DC Distribution Grids with Multiple Grounding Points

DC Microgrids could play an important role in a renewable and sustainable future. Unfortunately, there are not enough standards or guidelines for the implementation of DC Microgrids or DC distribution grids in general. Nevertheless, reliability and security of such a system must be assured at all times. As a consequence, an important challenge...

Toward the Universal DC Distribution System

AbstractDue to an increasing number of power generation units and load devices operating with direct current (DC) at distribution level, there is a potential benefit of leading efforts toward building a DC distribution system. However, the implementation of DC distribution systems faces important challenges, including the market inertia of AC...