Authors: G.Naresh, Sheik Mahaboob Shariff and V.Sowjanya
In this paper a new connection for a unified power quality conditioner (UPQC) has been proposed to improve the power quality of two feeders in a distribution system. A UPQC consists of a series voltage-source converter (VSC) and a shunt VSC both joined together by a common dc bus. It is demonstrated how this device is connected between two independent feeders to regulate the bus voltage of one of the feeders while regulating the voltage across a sensitive load in the other feeder. Since the UPQC is connected between two different feeders (lines), this connection of the UPQC will be called an interline UPQC (IUPQC). The structure, control and capability of the IUPQC are discussed in this paper. The efficiency of the proposed configuration has been verified through simulation studies using MATLAB/SIMULINK.
Distribution system, Power quality, Sensitive load, Voltage sag, Voltage-source converter (VSC)
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