American Journal of Electrical Power and Energy Systems

Volume 6, Issue 6, November 2017

  • Transient Stability Analysis of the Nigeria 330-kV Transmission Network

    Ignatius Kema Okakwu, Emmanuel Apoyi Ogujor

    Issue: Volume 6, Issue 6, November 2017
    Pages: 79-87
    Received: 7 September 2017
    Accepted: 26 September 2017
    Published: 23 October 2017
    Abstract: 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 th... Show More
  • Operating Cost for Optimal Performance of 100MW Gas Turbine Unit of Ughelli Power Plant

    Ugwuoke Philip Emeka, Obodeh Otunuya

    Issue: Volume 6, Issue 6, November 2017
    Pages: 88-93
    Received: 11 July 2017
    Accepted: 7 August 2017
    Published: 15 November 2017
    Abstract: The operating cost for optimal performance of 100MW Delta IV gas turbine unit of Ughelli power plant was determined using optimum operating parameters and exergoeconomics. The optimizatioon tool is an evolutionary algorithm known as Genetic Algorithm (GA). The computer application used in this work is written in Matlab (Version 2011b) programming l... Show More
  • Effects of Toshka Pumping Station Operations on Power Quality and Stability of Electrical Grid

    Khaled Mohamed Kotb Fetyan

    Issue: Volume 6, Issue 6, November 2017
    Pages: 94-112
    Received: 13 August 2017
    Accepted: 29 August 2017
    Published: 21 November 2017
    Abstract: Toshka is a large water pumping stations in Egypt. This station contains 21 units (18+3 Extentions) each 12MW. At a full capacity the full power consumptions can reach 200MW. The electrical feeding system for the stations contains; transformer, substations and Overhead transmission line (its long 300km), so the operations of the stations causes som... Show More
  • Analysis of Correlation Among Partial Discharges, Ozone Emission, and Ultraviolet Radiation in High Voltage Motor Stator Windings

    Tae-sik Kong, Hee-dong Kim, Soo-hoh Lee, Jin Lee

    Issue: Volume 6, Issue 6, November 2017
    Pages: 113-118
    Received: 21 August 2017
    Accepted: 5 September 2017
    Published: 13 March 2018
    Abstract: In this research, a normal winding and simulated defective winding were created to examine the correlation between partial discharges, ozone concentration, and ultraviolet radiation in high-voltage motor stator windings. In the simulated defective winding, the semiconductor layer was removed so that discharges could occur easily between the winding... Show More