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Power Flow for a Four-Wire Radial Low Voltage Distribution Grid with a Single Point Grounded Neutral

descriptionPublicationkeyboard_double_arrow_right Conference object , Article , Other literature type 01 Sep 2019Publisher:IEEEJournal:2019 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe)Funded by:EC | KIOS CoE

Authors: Kotsonias, Andreas; Hadjidemetriou, Lenos; Kyriakides, Elias;

doi: 10.1109/isgteurope.2019.8905641

Power Flow for a Four-Wire Radial Low Voltage Distribution Grid with a Single Point Grounded Neutral

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Abstract

The forward/backward sweep is the most commonly used power flow method in radial Low Voltage Distribution Grids (LVDGs). In most cases, Kron's reduction is used to merge the neutral conductor with the phase conductors. However, important information can be lost by ignoring the effect of the neutral conductor through the Kron's reduction method, since in LVDGs the majority of loads are single-phase connected and are supplied through a phase conductor and the neutral. In this paper, a modification to the forward/backward sweep method is proposed to account for the neutral voltage as well. Test results indicate the significance of knowing the exact configuration of the neutral conductor in an LVDG before conducting power flow studies as it can affect greatly the accuracy of the results.

Related Organizations

KIOS Research and Innovation Center of Excellence
Cyprus
KIOS Research and Innovation Center of Excellence
Cyprus
University of Cyprus
Cyprus

Keywords

four wire system, low voltage distribution grid, neutral conductor, power flow, radial grid

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