A Comparative Analysis on the Impact of 500kV and Meshed 330kV Super Grid Lines in an Interconnected Nigerian Transmission Network for Efficiency Improvement

It has been discovered that losses have an impact on a system's overall efficiency. Thus, losses must be kept to a minimum in order to maximize the efficiency of any power system. In this work we used two methods, Mathematical design modelling of transmission line parameters of 500kV four stranded conductors and meshed existing 330kV Nigerian Network's transmission line at the fringe edge of the transmission line across all regions. Power systems analysis toolbox (PSAT) 2.1.10 in the MATLAB 2015a environment was used to perform power-flow analysis on 500kV four stranded conductors’ super grid and meshed networks employing quick decoupling techniques in order to achieve these goals. The study's findings indicate that the output total loss for meshed 33kV and 500kV four stranded conductors super grid networks is 1.757869 MW and 72.363 MW respectively. Meshed network has better Phase Shift Angle of average and better voltage profile than 500kV four stranded conductors’ super grid though within nominal level, load-ability flow/current carrying capacities of 500kV four stranded conductors’ super grid is better presented. In the future, the implementation of the two proposed networks will result in an incredible power transmission.