COMPARATIVE FINANCIAL EVALUATION OF TECHNICAL LOSSES IN SOUTH EASTERN NIGERIA POWER NETWORK
Publication Date : 26/04/2022
This paper presents the comparative analysis of technical losses on its financial assessment associated with the distribution of power in the South Eastern part of Nigeria. This analysis is performed with the aid of electrical transient and analysis program (ETAP), wherein the South Eastern Nigeria distribution network was first modeled and its load flow generated using Newton Raphson iterative load flow method for all two hundred and three (203) load buses in the network. The system technical losses are evaluated for four cases: system alone, on-load tap changes (OLTC), fixed tap and on-load tap changes (OLTC), and optimal capacitor placement. The results showed that when the network is operating at 100 percent (%) load demand, the system losses recorded were 44.33 MW and 165.3511 MVAR while they were 11.973 MW and 0.68 MVAR when capacitor banks are used in the loss reduction. The results also showed improvements of the average power factor of 74.9 % lagging. The average percentage bus loading improves to 30.1 % while the percentage voltage drop across transmission is 5.75 %. The financial assessment of these losses show the accumulative profit over a four year period in billions of naira as the system yields profit of three hundred and eighty seven billion, four hundred and forty three million six hundred and sixty-eight thousand naira only (N387,443,668,000) in its first year of operation and gradually increases to one trillion, five hundred and sixty two billion, eighty-seven million, three hundred and ninety thousand naira only (N1,562,087,390,000) even after the installation and operation capitals are removed from the net annual loss reduction savings in naira. It is therefore recommended for the proposed rated capacitor banks to be installed at the recommended sub-stations to yield profit which could be then injected back into the generation to improve system supply in the South Eastern Nigeria electricity distribution system.
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