Abstract
In a large scale power network, maintaining the magnitude of bus voltages within nominal operating level at all buses is a vital requirement. With such condition, the system will have an optimal transmission line performance with minimum power losses and no overloading issue. To achieve this, the power flow along transmission line ought to be properly controlled using special devices like the Unified Power Flow Controller (UPFC) - a multipurpose device which can control power flow by modifying the voltage magnitude, phase angle and impedance of transmission lines. Hence, this paper proposes a technique for mitigating voltage level and real power losses in transmission system using optimal placement of UPFC and Evolutionary Programming (EP). The implementation of the proposed technique involved IEEE 14-bus reliability test system. Experiment and analysis has justified the capability of EP-based UPFC placement for voltage stability improvement and power loss minimization as well.
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