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2 Result(s) for 'Emmanuel U. Oleka'
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1.
Electric Power Transmission Enhancement: A Case of Nigerian Electric Power Grid
Emmanuel U. Oleka , Samuel N. Ndubisi, Gerald K. Ijemaru
American Journal of Electrical and Electronic Engineering. 2016 4 (1). doi: 10.12691/ajeee-4-1-5
Keywords: power transmission, reactive power, active power, voltage profile, line transfer capability
Context: Increase in economic activities resulting from increase in population and social advancement has led to increase in electrical energy demands. This has increased the burdens on the existing transmission assets and in some cases, has caused the loading of the transmission assets beyond their design limits with consequent reduction in power quality and power outages in extreme cases. Many techniques have been developed to enhance the capabilities of the power grids. This paper looks into these techniques with the view to exploring their applicability to the Nigerian 330KV electric power grid, towards seeking ways to enhancing the performance of the grid for better asset utilization. A typical transmission line in the grid was modeled to assess its strengths and weaknesses. Enhancement techniques were then applied to assess their impacts on the line.
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2.
Highlighting the Deficiencies in Some Existing Optimal PMU Placement Techniques
Emmanuel U. Oleka , Evelyn R. Sowells, Gary L. Lebby
American Journal of Electrical and Electronic Engineering. 2017 5 (4). doi: 10.12691/ajeee-5-4-1
Keywords: optimal PMU placement, placement considerations, synchrophasor system deployment, synchrophasor applications
Context: Synchrophasor technology is receiving a global acceptance for electric power grid Wide Area Measurement System, (WAMS), an important function in a smart power transmission grid. A critical challenge in the synchrophasor technology deployment is the optimal choice of Phasor Measurement Unit (PMU) locations on the power grid. Researchers have proposed several techniques and algorithms in this respect. This work evaluated some of the major techniques and established that the available techniques and the factors they considered are not sufficient for a real-life optimal PMU placement (OPP). It also pointed to a method that could be applied to achieve a practical and robust solution for effective PMU placement for synchrophasor applications in a real-life electric power grid. It, therefore, calls for a shift in paradigm in the studies for the optimal PMU placement locations.
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