Pelican-FOPID Based DSTATCOM for real-time load compensation and harmonics mitigation in three-phase distribution system

Abstract

Power quality (PQ) explores the issues resulting from current and voltage deviations. Non-sinusoidal currents were drawn from the electric grid by the nonlinear loads. These non-sinusoidal currents contain harmonics and reactive power that lower the system's overall power quality. Distribution Static Compensator (DSTATCOM) emerged as a promising compensator to provide solution for all PQ issues. Yet the controlling strategy of this compensator was still complex to design. Here, an optimization-based Fractional Order Proportional Integral Derivative (FOPID) was introduced to manage the DSTATCOM process to improve PQ in a standard bus system. The optimal problem of FOPID controller was solved through the use of novel optimization approach. The DSTATCOM with FOPID was linked to the weak bus system. The pulse-signal of DSTATCOM was done using the optimal controller, which analyzes the error value of reference voltage and bus voltage to generate-pulses. The proposed model was designed, and the performance was analyzed under two cases, like IEEE 33 bus system and IEEE 13 bus system. The proposed optimal controller-based DSTATCOM performance was validated under various conditions such as interruption, swell, harmonics and sag. The optimal controller offered Total Harmonic Distortion (THD) value at sag, swell, and interruption period was 0.46%, 1.36% and 0.46% in IEEE 13 bus system, and 1.79%, 2.10% and 2.67% THD in IEEE 33 bus system. Moreover, the issues mitigation performance was compared to another present approach. The validated outcome demonstrates the proposed model provides a good mitigation performance in all PQ issues conditions, so it was well fit for real-time implementation.