Abstract According to the United Nation Development Programme, access to modern low-cost energy systems in developing countries is important in the realization of the globally agreed developmental goals, as well as the Millennium Development Goals, and sustainable development, which would assist in the reduction of poverty and to improve the conditions and quality of life for the greater part of the world’s population. Planners have suggested hybrid energy system for the electrification of...
ABSTRACT For accurate and high rate of lung cancer detection using image processing, an effective preprocessing technique is required. A quality preprocessing technique is necessary to ensure effective removal of noise that interferes with the features of the image and hence improves lung cancer detection rate and accuracy. In this research, an Improved Gaussian Filter (IGF) technique was developed for effective lung image preprocessing. For image segmentation, Otsu thresholding method was us...
ABSTRACT The thesis addresses the fundamental means of overcoming the challenge posed by voltage collapse to the success of electricity market unbundling. As regards the record available from the recent deregulation and unbundling of the Generation and Distribution segment of the electric power system, it has become evidently necessary to investigate the best and optimal operating conditions under which the transmission system is expected to perform with respect to the high level of transact...
ABSTRACT Modern power systems are operated under various constraints which are meant to ensure an appropriate delivery of service. Meanwhile power system faces imbalance in power generation and its consumption in which the higher the load consumption the lower the frequency of operation. The governor-turbine combination will then experience a devastating reduction in its frequency of operation due to disturbance that may lead to system collapse. Both governor and turbine are included in the ...
ABSTRACT In recent times, the issue of the gap between electricity supply and demand has been addressed using distributed generation (DG) technology. When DG technology is properly placed within a transmission and distribution network, there is always improvement in power loss reduction, voltage profile and system reliability. Proper placement can be achieved by evaluating the optimal values for voltage deviation, real power loss and bus voltage. Thus, this study presents a multi-objective D...
Abstract This study evaluated the economic and environmental potentials of improving the energy efficiency of the lighting technology at the University of Lagos, Nigeria. The energy audit report for the Faculty of Engineering, University of Lagos before retrofitting shows that all lighting fixtures in the lecture rooms are the 1.2 metre inefficient fluorescent lamps. The cost effectiveness of lighting retrofitting with Compact Fluorescent Lamps (CFL) and Light Emitting Diode tube (LED) light...
ABSTRACT The PID controller still remains a widely used and very effective means of achieving stability in control systems. Generally, the performance of the controller is determined by the proportional, integral and derivative gains of the controller. The classical techniques: ZieglerNichols (ZN) open loop method; ZN closed loop method; Chien-Hrones-Reswick (C-H-R) load rejection method; and meta-heuristic technique: the fuzzy logic algorithm, are used to determine the tuning parameters of ...
ABSTRACT Locating the position of a mobile user with a high degree of accuracy is a trending research interest. It holds the key to a breakthrough in many service challenges faced by operators in the wireless communication industry. With a success in this field, it will be possible for call rates in mobile phones to be charged based on the location a subscriber is calling from; fighting crimes and delivering emergency services through the mobile network’s ability to detect the caller’s po...
ABSTRACT In making a choice of solar Photovoltaic or diesel generator system as an alternative for power generation, life cycle costs (LCC) analysis are considered to be potentially important to such a decision. It incorporates all costs arising from owning, operating, maintaining and ultimately disposing of a project. In this study, a software computer program is developed to determine life cycle cost of solar Photovoltaic and diesel generator systems in Nigeria. The software is developed th...
ABSTRACT This research work on “Modelling and Simulation of Leakage-Induced Pressure drops along oil and gas pipelines tends to develop flow equations that can detect and localize leakages in oil and gas pipelines by modifying the Darcy-weisbach equation for liquid/oil flow, and the Panhandle B equation for natural gas flow in pipelines. These modified equations were simulated using matlab to show how flow rate values for the oil and gas pipelines vary when; the pipeline is working at full ...
ABSTRACT This research work presents the modelling, analysis and control of two topologies of induction generators for wind energy conversion. The two topologies are the shorted stator induction generator (IG) and the doubly-fed induction generator (DFIG). Each of the two topologies employs a wound rotor induction machine and a set of back-to-back converters connected to the rotor of the induction machine, for the energy conversion process. Vector variable models are conventionally deployed f...
ABSTRACT This work evaluated the path losses and strength of received signals of a 3G Network operating at frequency of 2.1GHz in Owerri metropolis using Drive test. There were serious cases of call drops and low Quality of signal (QoS) experienced within some part of the Owerri metropolis. This situation has been burdensome on the side of the network users, as that has made them incur a lot of financial losses and passed through pains. The network providers, on their side, also passed thro...
ABSTRACT This work analysed the current state of power system in Nigeria with emphasis on distribution system using Akwa Ibom Distribution System as a case study. The components of the study system were analyzed. This work adopted the analytical and simulation approach to reliability and stability assessment. Analysing the system the way it is shows that the system was not reliable and stable. The outcome gotten from the base state of the system confirmed this. The results for the current sta...
ABSTRACT This project report is an excerpt of the design of a Micro-controller based Access Control Lock system implemented to assist the university with the aid of security personnel in the prompt detection of students who have not completed necessary fees payment and to checkmate the problem of the ever increasing rate of examination impersonation perpetuated by students. The Micro-controller based Access Control Lock system is an automatic software-based system having two major par...
Abstract —Radiation on BPLC caused by presence of high frequency communicating signals is discussed in this paper. The paper presents the derived mathematical model which expresses electric field radiation behavior of BPLC system. The model was developed using the combined numerical method of moment (MOM) and transmission line transient (TLT) method utilizing Maxwell integral equation to predict radiation over the line. The mathematical model simulation results for electric field radiation ...