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Distributed FACTS stabilization scheme for efficient utilization of distributed wind energy systems

Abstract:

Because of the growing usage of wind energy systems worldwide, more challenges in power quality and microgrid stabilization domains have emerged. In this paper, a new distributed FACTS-based green plug-switched filter capacitor (GP-SFC) filter is presented for efficient utilization of microgrid-connected wind energy systems. The primary goals are improving the energy use, stabilizing voltage dynamically, enhancing power quality, and improving the power factor at the common interface AC buses of the microgrid-connected wind system. The proposed GP-SFC topology is modelled and simulated using MATLAB/Simulink software. A dynamic multiloop error-driven controller is proposed for adjusting the pulse switching pattern of the variable speed wind turbine system. In addition to the low cost of the proposed GP-SFC filter, the results show that it can promote the use of wind energy system under load changes and temporary fault conditions. Besides, the proposed GP-SFC guarantees high-speed controllability while maintaining its capability for power factor correction and voltage support using its switched shunt capacitor. Also, the system performance with the proposed filter is compared with the system with a conventional D-STATCOM compensator. The results validate the effectiveness and robustness of the GP-SFC topology.