Abstract

The basic interphase power controller (IPC) presents the interesting features of simplicity and low cost despite being less flexible than most FACTS controllers. A compromise performance can be achieved by replacing the phase shifting transformers (PSTs) with a reduced rating unified power flow control (UPFC), also known as Unified Interphase Power Controller (UIPC). This comparison is the main goal of this paper. The control variables of the UPFC are computed based on an optimization procedure to minimize a given cost function. The results show not only the higher capability of the UIPC to control the current flow through the transmission line but also shows that the UIPC achieves his task with less losses.

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