POWER SYSTEM STABILITY AND CONTROL IN ELECTRICAL NETWORKS

Abstract

Abstract - Power system stability and control are fundamental aspects of modern electrical power networks, ensuring the continuous, secure, and reliable supply of electricity under normal operating conditions and following disturbances. The increasing integration of renewable energy sources, distributed generation, power electronic converters, smart grids, and flexible AC transmission systems (FACTS) has made power system stability more complex and dynamic. Stability refers to the ability of a power system to maintain synchronism, acceptable voltage levels, and frequency after disturbances such as faults, sudden load changes, generator outages, or transmission line failures. Effective control systems, including automatic voltage regulators (AVRs), governors, power system stabilizers (PSS), flexible AC transmission systems, and wide-area monitoring systems (WAMS), play a vital role in enhancing system performance and preventing large-scale blackouts. This paper discusses the concepts, types of stability, control techniques, factors affecting stability, applications, challenges, and future trends in power system stability and control.

Keywords: Power System Stability, Electrical Networks, Frequency Stability, Voltage Stability, Rotor Angle Stability, Automatic Voltage Regulator (AVR), Power System Stabilizer (PSS), Smart Grid, FACTS, Wide Area Monitoring System (WAMS).