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ABSTRACT
Load flow analysis is a critical aspect of power system engineering, ensuring the efficient and reliable operation of electrical distribution systems. Power loss is the cause of the global issue of the low voltage profile of power supplied to consumers, regardless how the power system network is planned, losses are unavoidable. Variable voltage can be caused by the network's complexity and unexpected changes in load demand. Reactive power in the grid directly relates to the voltage level of a power system network. The study focuses on a load flow analysis of a 11kV distribution network. Analysis was done on consumer transformer voltage profile, power losses, and overall performance under various load conditions. The 11kV Uselu feeder network, radiating from Ugbowo 33/11 kV injection substation was for the study. There are thirty-seven (37) functional transformers on the feeder. The length and electrical parameters were measured. The electrical parameters include voltage (V), peak and off-peak loads (kVA) and power factor were collected using Three Phase digital power clamp meter. Analysis of measured data was carried out using MATLAB Simulink. Peak and off-peak load scenarios were analyzed using load flow. The load flow solver block used Newton Raphson numerical method to iteratively solve the nonlinear algebraic equations.
