American Journal of Electrical Power and Energy Systems
Volume 6, Issue 6, November 2017, Pages: 79-87
Received: Sep. 7, 2017;
Accepted: Sep. 26, 2017;
Published: Oct. 23, 2017
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Ignatius Kema Okakwu, Department of Electrical/Electronic Engineering, Faculty of Engineering, University of Benin, Benin City, Nigeria
Emmanuel Apoyi Ogujor, Department of Electrical/Electronic Engineering, Faculty of Engineering, University of Benin, Benin City, Nigeria
Assessment of the dynamic response of generators, within a power system, when subjected to various disturbances, has been a major challenge to power system researchers and engineers for the past decades. This paper investigates the dynamic response of the generators in the Nigeria 330-kV grid network when a balanced 3-phase fault is applied with the aim of determining the Critical Clearing Time (CCT) of the transmission network. The generalized swing equations for a multi-machine power system is presented. MATLAB software is employed as the tool for the simulations. A real network of Nigeria 330-kV electric grid is used as a case study. The result obtained clearly show that there exist critical buses such as Benin, Onitsha and Jebba Transmission Station (TS) and critical transmission lines such as Benin-Olorunshogo Generating Station (GS) and Jebba TS-Shiroro GS within the network. The results also reveal that the system losses synchronism when a balanced 3-phase fault is applied to these identified critical buses and lines. The results further indicate that the Nigeria 330-kV transmission network is on a red-alert, which requires urgent control measures with the aim of enhancing the stability margin of the network to avoid system collapse.
Ignatius Kema Okakwu,
Emmanuel Apoyi Ogujor,
Transient Stability Analysis of the Nigeria 330-kV Transmission Network, American Journal of Electrical Power and Energy Systems.
Vol. 6, No. 6,
2017, pp. 79-87.
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/
) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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