ANALYSIS OF COORDINATED CONTROL AND INTERACTIONS BETWEEN FACTS CONTROLLERS WITH INTEGRATED UNIFIED POWER FLOW CONTROLLER TO IMPROVE POWER SYSTEM PERFORMANCE

Abstract

The integration of renewable energy sources and the increasing complexity of power systems have heightened the need for advanced control and mitigation strategies to ensure grid stability and reliability. Static Synchronous Compensator (STATCOM) has emerged as a vital device for voltage regulation and power quality improvement in interconnected power systems. This paper presents a comprehensive analysis of the optimal placement of STATCOM within the North East (Gombe State, Nigeria) 330/132 KV transmission system. Utilizing advanced optimization techniques and power system simulations, the study evaluates various candidate locations for STATCOM installation to enhance voltage stability and mitigate transient stability issues. In this research work, STATCOM was placed on a Nigerian North East 12 bus flexible alternating current transmission system (FACTS). This was achieved by modelling the actual FACTS device using power systems analysis tool box of the MATLAB software. After modelling the system, particle swarm optimization technique was written in MATLAB and was used to determine the optimum placement of single STATCOM on the 12-bus system, thereby improving the quality of the system. At the end of this research work, it was discovered that for the North East transmission system, the optimum placement of STACOM occurred at bus 11, that is the Yola 132 KV sub-transmission system, for single placement. This provides valuable insights for power system operators and planners in effectively enhancing the performance and reliability of interconnected power systems.