Abstract

The 330kV grid in Nigeria, consisting of 52 buses, is confronted with significant challenges, including voltage instability, extended transmission lines, inherent transmission line characteristics, and substantial power losses, which adversely impact both power generation and distribution systems. This study focuses on the harmonic analysis of the Nigerian 52-bus grid, comprising 52 buses, 18 generating stations, and 65 transmission lines. Utilizing ETAP 16.0 as the analytical tool, the research investigates harmonic orders on the 330kV line network in Nigeria. Simulations were conducted using the ETAP 16.0 software package, with input parameters encompassing relative amplitudes and phase angles for both current and voltage source models. Data for the study were sourced from the Transmission Company of Nigeria (TCN). The obtained results reveal that some bus voltages exceed the prescribed standard limits. Consequently, it can be deduced from the findings that the existing Nigerian 52-bus grid grapples with considerable line losses, necessitating compensation through the implementation of reactive power support mechanisms, such as Flexible Alternating Current Transmission Systems (FACTS) devices, to optimize line utilization effectively.