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Published Articles

Voltage Profile and Losses Assessment of the 330kV Nigerian National Grid

https://doi.org/10.55989/HCDU8940

Autors:   D. E. Aku, A. E. Airoboman, A. Shaibu

Date:   Jan 21, 2023

Edition:   December 2022 Edition

Volume:  3

  Issue:  2

  Pages:  13 (222 - 234)

Abstract:

This work is aimed at assessing the voltage profile and losses of the 330kV Nigerian National Grid (NNG). In order to carry out this assessment, data was collated from the National Control Centre, Osogbo. Data collated include; Single Line Diagram (SLD), Line and Bus data. The network is made up of 23 PV buses, 41 PQ buses and 91 transmission lines. Newton Raphson technique was employed in performing the load flow analysis of the network in order to determine the voltage profile and losses associated with the network. Twenty (20) buses were found to be operating outside the acceptable limit of 0.95pu to 1.05pu with the highest voltage violation experienced at bus 16 with voltage profile of 0.8463pu. The real and the reactive power loss obtained were 3504.040MW and 4076.769MVAr respectively. All simulations were implemented in MATLAB software (version 2020b).

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