Minimization of Losses on Electric Power Transmission Lines

Availability of electric power has been the most powerful vehicle for facilitating economic, industrial and social developments of any nation. Electric power is transmitted by means of transmission lines which deliver bulk power from generating stations to load centres and consumers. For electric power to get to the final consumers in proper form and quality, losses along the lines must be reduced to the barest minimum. In this paper, a mathematical model of losses along electric power transmission lines was developed using a combination of ohmic and corona losses. The resulting model, which is a nonlinear multivariable unconstrained optimization problem, was minimized using the classical optimization technique. From the results, we were able to see that power losses on transmission lines will be minimized if we transmit electric power at a very low current and at an operating voltage that is very close to the critical disruptive voltage. Also the spacing between the conductors should be large in comparison to their diameters. These results, gotten by the use of an analytical method, conform to the existing results for power transmission. Keywords: Power Losses, Minimization, Transmission, Classical Optimization, Mathematical Model

On optimum dispatch of electric power generation via numerical method

In this work we develop an optimum dispatch / generating strategy by presenting economically the best load flow configuration in supplying load demand among the generators. The main aim is to minimize the total production / generation costs, with minimum losses and at the same time satisfy the load flow equation without violating the inequality constraints.Keywords: Generation, power flow, generator limits, power losses,Chironomidae, River Niger, Niamey, water qualit