An Analysis of Power Distribution Network in Nigeria for Power Quality-Based Reinforcements and Investment Planning

Abstract:

In this study, power flow analysis was carried out on a typical Nigerian 43-bus radial distribution network feeder incorporated with non-linear loads using NEPLAN software to determine its operating parameters. Also, adequate reinforcements were provided to achieve power system parameters within recommended limits and the associated costs of implementation evaluated. The results obtained showed its voltage profile ranges from 87.12% to 97.07% and the harmonic distortion level (THD_V) ranges from 4.5% to 6.43% which is in violation of recommended ±5% of bus nominal voltage and 5% harmonic distortion limit for 11 kV nodes. A hybrid optimization technique that combine Genetic Algorithm (GA) and Direct Search method was used in the sizing and location of capacitor bank and passive harmonic filters to reinforce the distribution networks. The results obtained showed that voltage profile improved to the range of 96.73% to 100.27% and the THD_V improved to the range of 2.99% to 4.46% with active power loss reduction from initial 707.24 kW to 558.1 kW after reinforcement. The estimated investment cost options on reinforcement devices ranges from 48 million Naira to 138.81 million Naira with a payback period of three (3) years for an optimum reinforcement billing charge of ₦10/kWh increase on tariff charge.

• Periodical: Advances in Science and Technology (Volume 154)
• Pages: 213-223
• DOI: https://doi.org/10.4028/p-uc8mGf
• Online since: July 2024
• Authors: Oluwadare Raphael Olakunle*, Adegoke Oladipo Melodi
• Keywords: Capacitor Bank, Harmonic Analysis, Network Reinforcement, Passive Harmonic Filters

References

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