Power Line Communication Technology

ABSTRACT Power Line Communication and Technology, PLCT for short, is an emerging technology with significant new business potential for both the electricity supply and telecommunications sectors. The liberalization and deregulation of these sectors, currently underway in Nigeria is a major driving force in the development and exploitation of PLCT technology. Since power lines were devised for transmission of power at 50-60 Hz, and at most 400 Hz, the use this medium for data transmission, at high frequencies, presents some technically challenging problems. Besides large attenuation, power lines are one of the most electrically contaminated environments, which makes communication extremely difficult. Further, more the restrictions imposed on the use of various frequency bands in the power line spectrum limit the achievable data rates. This paper gives a concise overview, summary of limitations, and evaluation of recent trends in Power Line Communication Technology

Analysis and Evaluation of Energy Efficiency of 5G Networks in Wireless Communication.

This paper focused on the analysis and evaluation of energy efficiency of 5G networks in wireless communication. The projected rise in wireless communication traffic has necessitated high operating costs of conventional wireless cellular networks and scarcity of energy resources in low power applications. This paper examined different ways of deploying energy efficient hardware at the base stations in order to make the base station non-polluting energy. The method employed involves the measurement of power consumption at the macro cell and micro cell base stations. The results of the power consumption obtained from the macro cell base stations were used in three models, namely the Gex model, the modified Gex model and Ismail model for the periods of 0am – 1am, 12pm – 1pm and 11pm – 0am were 11228.63W, 11561.15W, 11231.06W, 12821.65W, 12983.29W, 12981.64W, 13020.56W, 15342.30W, 11323.83W, 11634.23W, 11374.37W and 13196.66W. Again, the results of the power consumption obtained from the micro cell base stations for the periods of 0am – 1am, 12pm – 1pm and 11pm – 0am were 717.09W, 754.83W, 729.65W, 748W, 723.67W, 743.34W, 717.6W, 741W, 643.5W, 667.74W, 642.9W and 718W, respectively. Therefore, it is concluded that the modified model produced energy consumption that are in consonance with the measured energy. Therefore, it is concluded that the modified Gex model produced energy consumption values which are in closed range with the measured energy values. &nbsp

AC-DC Solid-State Conversion and Power Factor Correction using Thyristor-Based Static Var Compensator

This paper presents AC-DC solid states converters with thyristor-based static Var compensator in power factor correction. There is need for solid-state ac–dc converters to improve power quality in terms of power factor correction, reduce total harmonic distortion at input ac mains and precisely regulate dc output. AC-DC converters operating in continuous-conduction mode have become popular because of reduced electromagnetic interference levels resulting from their utilization. The method employs the principle of interleaved converters, as it can be extended to a generic number of legs per winding of the autotransformers and high-power levels. The practical analysis of the converter is then plotted using a Simulink model of Matlab while a comparison of power factor and efficiency with relative to the load is drawn with Steady-State and Dynamic Performance of the Static Var Compensator (SVC). An experimental prototype load varied between 400W to 1 KW is implemented to validate the work. The results obtained indicates that when the output loads were 53KW, 135KW, 270KW, 470KW and 900KW, the efficiency were 55%, 70%, 80%, 90% and 97% respectively. These results confirmed that there was improvement in the power factor and efficiency with increase in the load