Augmentation of Power Quality Through PV Static Synchronous Compensator using Shunt Active Power Filter
Keywords:
Voltage Source Converter (VSC), Low Power Quality Improvement, PV-STATCOM, Voltage Ride Through, Power Quality Enhancement.Abstract
The burgeoning energy demand has prompted all the developing nations to search for the most dependable sources. Solar energy source has emerged as the main prominent green energy source. However, the integration of these energy sources using the traditional alignments of electrical power systems resulted in reliability concerns. Moreover, the rapidly increasing utilization of power electronic based loads is leading to power quality concerns in the distribution system. At present-day, the major power quality issues in the distribution networks are poor power factor, islanding of renewables caused extreme voltage deviations, harmonics and reactive power demand. These power quality concerns may affect the end user equipment, which may result in the complete spoilage of products. The various traditional techniques (capacitor bank, passive filters, UPS etc.) are unable to attenuate the power quality issues completely. The FACTS devices are being used vigorously to annul the power quality deviations that originate in the distribution networks. Among the various power filters, the Shunt Active Filters are playing a determinant role to mitigate power quality concerns in the distribution systems. This research work proposes to develop a system that can eliminate the power quality concerns to a considerable level using SAF configured from solar photovoltaic Inverter control. This work proposes to employ the P-Q Control theory and Unit Vector Template Method to start the PV STATCOM’s operation. The voltage source converter (VSC) based PV-STATCOM injects and or absorbs the required reactive and active powers at PCC in the distribution systems for attenuation of the power quality concerns. This study primarily exhibits the effectiveness of PV-STATCOM in improving power quality in grid-tied systems and demonstrating the possibility of Low Voltage Ride Through (LVRT). The LVRT requirement implies that active and reactive power injections are necessary to maintain grid voltages during grid disturbances. The MATLAB / Simulink results with designed settings show that PV-based STATCOM for enhancing power quality in distribution systems performs better.
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