Mitigation of Power Fluctuations in UPFC-Based Network

Unified power flow controller which is the latest family in FACT family is used for real-time control and dynamic compensation of AC transmission system. UPFC controls all the parameters that affect power flow (voltage, phase angle and impedance) of transmission line by either selectively or simultaneously. But with conventional control schemes, the power fluctuation cannot be completely mitigated, and the time constant of damping is independent of real and reactive power feedback. In this paper, an attempt is made to validate the advance control scheme available for mitigation of the power fluctuation with MATLAB simulation. Complete model is prepared and analysed ignoring the dynamics of shunt device; the power fluctuation attenuation has been successfully achieved by simulation, and the results are presented.