Application of Differential Evolution Algorithm for Optimal Placement of UPFC for Improved Voltage Stability



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Submitted Aug 25, 2016
Published Jul 27, 2018
10.24018/ejeng.2016.1.2.156

Abstract viewed = 194 times

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The Unified Power Flow Controller (UPFC) is one of the versatile and most effective Flexible AC transmission System (FACTS) devices which can provide full dynamic control of a transmission line parameters, bus voltage, line impedance and phase angle for improved system security. However, the extent that performance of UPFC can be brought out; it’s greatly dependents upon the location of the device in the system. The present work is a Differential Evolution (DE) based algorithm for optimal placement of the UPFC device under steady state (normal, moderate and critical) conditions and is aimed at voltage profile enhancement of an interconnected power system. The proposed method is applied on an IEEE 14-bus power system which is demonstrated through MATPOWER simulation tool. The results obtained indicate that DE is robust based on the facts that the voltage profile was kept within the acceptable limit. Installing UPFC in the optimal location determined by DE can significantly enhance the security of power system through improvement of bus voltage limit violations.
Keywords: Bus Voltage Differential Evolution Flexible AC Transmission System (FACTS) Unified Power Flow Controller (UPFC)

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