Dynamic Response Assessment of the Nigerian 330kV Transmission System

  • Okakwu Kema Ignatius Department of Electrical and Electronics Engineering, University of Benin, Benin City, Nigeria
  • Akintunde Samson Alayande Department of Electrical and Electronics Engineering, University of Lagos, Akoka, Nigeria
  • Olubayo Moses Babatunde Department of Electrical and Electronics Engineering, University of Lagos, Akoka, Nigeria
  • Ade-Ikuesan Olanike Olufisayo Department of Electrical and Electronics Engineering, Olabisi Onabanjo University, Ago-Iwoye, Nigeria
  • Olabode Olakunle Elija Department of Electrical and Electronics Engineering, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Keywords: Transient stability, Critical clearing time, Nigerian 330kV transmission network, Swing equation, Disturbances, Dynamic responses.

Abstract

This paper presents the dynamic responses of generators in a multi-machine power system.  The fundamental swing equations for a multi-machine stability analysis are revisited. The swing equations are solved to investigate the influence of a three-phase fault on the network largest load bus. The Nigerian 330kV transmission network was used as a test case for the study. The time domain simulation approach was explored to determine if the system could withstand a 3-phase fault. The stability of the transmission network is estimated considering the dynamic behaviour of the system under various contingency conditions. This study identifies Egbin, Benin, Olorunsogo, Akangba, Sakete, Omotosho and Oshogbo as the key buses within the network, which could provide useful information when a three-phase fault occurs on Ikeja-West (Bus with the largest load). The results obtained also show that the system loses synchronism immediately a three-phase fault was simulated on the largest load bus, considering various contingencies with the generator at Geregu being the most severely disturbed generator.

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Published
2020-01-30
How to Cite
Ignatius, O., Alayande, A., Babatunde, O., Olufisayo, A.-I. and Elija, O. (2020) “Dynamic Response Assessment of the Nigerian 330kV Transmission System”, Journal of Engineering, 26(2), pp. 85-98. doi: 10.31026/j.eng.2020.02.07.