Impact of Power Electronics on Modern Electrical Power Systems

Abstract

Power electronics has revolutionized the electrical power system landscape by providing efficient means for energy conversion, control, and regulation. This paper delves into the significant contributions of power electronic devices, such as thyristors, Insulated Gate Bipolar Transistors (IGBTs), and Voltage Source Converters (VSCs), in improving power system flexibility and control. The impact of power electronic converters in high-voltage direct current (HVDC) transmission, flexible AC transmission systems (FACTS), and grid connected renewable energy systems is critically analyzed. The ability of power electronics to provide fast and precise control over voltage, current, and power flow enables the management of power quality issues like harmonics, flicker, and voltage sags. The study also investigates challenges related to harmonics generation, electromagnetic interference, and thermal management in power electronic applications. Case studies highlight successful implementations in industrial and utility-scale systems, demonstrating their critical role in enhancing grid stability and reliability.

KEYWORDS: Power Electronics, HVDC, FACTS, Voltage Source Converter, Power Quality