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Excess power circulation in distribution networks containing distributed energy resources

Mazumder, S., Ghosh, A., Shahnia, F.ORCID: 0000-0002-8434-0525, Zare, F. and Ledwich, G. (2012) Excess power circulation in distribution networks containing distributed energy resources. In: IEEE Power and Energy Society General Meeting 2012, 22 - 26 July 2012, San Diego, CA

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The presence of large number of single-phase distributed energy resources (DERs) can cause severe power quality problems in distribution networks. The DERs can be installed in random locations. This may cause the generation in a particular phase exceeds the load demand in that phase. Therefore the excess power in that phase will be fed back to the transmission network. To avoid this problem, the paper proposes the use of distribution static compensator (DSTATCOM) that needs to be connected at the first bus following a substation. When operated properly, the DSTATCOM can facilitate a set of balanced current flow from the substation, even when excess power is generated by DERs. The proposals are validated through extensive digital computer simulation studies using PSCAD and MATLAB.

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