Performance Analysis of Grid-Connected Wind Energy during Symmetrical fault using FACTS Devices

Electrical Engineering

In recent years, whereas integrating the wind turbine energy sources, voltage control is an important factor which has to be controlled due to the change in fault ride-through capability during voltage response. Most of power quality problems for grid connected Doubly Fed Induction Generators (DFIG) wind sources comprise flicker, voltage magnitude variations, and injected harmonics because of switching in converters. In this research, the wind farm with DFIG’s is stabilized using three different FACTS devices, such as Static VAR compensator (SVC), Thyristor Controlled Series Compensator (TCSC) and Unified Power Flow Controllers (UPFC). Furthermore, three lines to ground fault (LLL-G) of fault measures are analyzed in the simulation test cases utilizing MATLAB which presented a 9 MW which transferred to utility grid. So, Moth Flame Optimization with Improved Firefly Algorithm (MFO-IFFA) is proposed to inject or absorb the reactive power to stabilize the system. From the simulation results, it clearly shows that the proposed MFO-IFFA based UPFC devices achieves better results of attaining higher voltage profile of 0.9972 per unit voltage stability with a reactive power injection of 1.33 Mvar which is better than the existing SVC and STATCOM which gives 0.94 & 0.9925 per unit only.

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