Browsing by Author "Olalekan Ogunbiyi"

Now showing 1 - 6 of 6
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    AI-driven demand forecasting for enhanced energy management in renewable microgrids: A hybrid lstm-cnn approach
    (WisdomGale., 2024-12-29) Bashiru Olalekan Ariyo; Lambe Mutalub Adesina; Olalekan Ogunbiyi; Abdulwaheed Musa; Bilkisu Jimada Ojuolape; Monsurat Omolara Balogun
    The increasing integration of renewable energy sources into microgrids (MGs) underscores the need for accurate demand forecasting to ensure stable and efficient MG operation. However, the inherent unpredictability of renewable energy sources presents significant challenges in energy management. This study aims to develop and validate an AI-driven demand forecasting model that improves prediction accuracy compared to traditional methods, thereby enhancing energy management in renewable MGs. A hybrid forecasting model that combines long short-term memory (LSTM) networks and convolutional neural networks (CNNs) was proposed. The model leverages historical energy consumption and meteorological data for training, ensuring robust and accurate predictions. Data preprocessing, training, and validation were performed meticulously to evaluate performance. The proposed model was compared with traditional forecasting techniques, including ARIMA and Exponential Smoothing, to assess its accuracy. The hybrid LSTM-CNN model demonstrated superior performance, achieving an R2 value of 0.87, a mean absolute error of 1.45 MWh, and a root mean squared error of 2.12 MWh. These results significantly outperform conventional forecasting methods, such as ARIMA and exponential smoothing, highlighting the model’s enhanced accuracy and ability to address key challenges in renewable energy forecasting. This study establishes the effectiveness of the hybrid LSTM-CNN approach in terms of improving the demand forecasting of renewable MGs. The model’s superior accuracy provides a reliable tool for real-time decision-making, energy distribution optimization, and cost reduction. Policymakers and energy stakeholders can use these insights to develop sustainable energy systems, with future research focusing on scaling up the model and exploring behavior and market pricing to improve forecasting precision.
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    Comparative Analysis of the Reliability Assessment of Commercial and Residential Feeders in the Power Distribution Utility of Nigeria
    (Elsevier Ltd., 2024-06-20) Lambe Mutalub Adesina; Olalekan Ogunbiyi; Bilkisu Jimada-Ojuolape
    Reliability studies serve as valuable tools for assessing and optimizing system performance. Utilities with higher reliability indices are more likely to achieve break-even points due to significantly reduced downtime. This paper explores a comparative assessment of two 11 kV feeders supplying electricity to residential and commercial customers, addressing concerns about distribution system reliability in Nigeria and its impact on the country’s GDP. The study involves a comprehensive reliability analysis, utilizing a flowchart to outline procedural steps and employing the ETAP Software program for data analysis collected over a month period from a power utility company. The data encompass operational parameters such as day-hourly consumption, outage records, and network equipment data. Results indicate higher reliability indices in the commercial feeder compared to the residential feeder, with the Customer Average Interruption Duration Index (CAIDI) being lower in the commercial feeder. The research underscores the significance of reliability assessment in improving operational efficiency, facilitating maintenance planning, and enhancing customer satisfaction.
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    Design, Implementation and Performance Analysis of an Off- grid Solar Powered System for a Nigerian Household
    (Elsevier Ltd., 2023-06-08) Lambe Mutalub Adesina; Olalekan Ogunbiyi; Kayode Makinde
    Solar panel converts direct current obtained from the sun into an alternating current which is often used in various applications. Photovoltaic (PV) power generation technology is used as a stand-alone system to bridge the power demand requirement due to increasing energy consumption. This paper aims to present the design, implementation, and performance analysis of an off-grid solar power system for a Nigerian household. A comprehensive design was done on Solar PV systems, parts and components, and the principle of operation. The average solar irradiance of the location was obtained from the data collation center at the Nigerian Meteorological Agency (NiMet). The method utilizes the development of a block diagram which shows the component layout and their connections and a flowchart which shows the procedure of achieving the objectives of the research. Battery efficiency, PV current measurement, current profile display, and commissioning of the installed PV system formed the results. Thereafter, Implementation and performance analysis was carried out. The load demand assessment shows that the power required was 23,820 Wh per day at maximum and 11,260 Wh per day when the diversity factor was applied (Table 1). Consequently, a 3500VA inverter was selected with a battery size of 800AH. The test result showed that with a load of 11,260 Wh the device supplied energy for about 24 hours uninterrupted. Therefore, the off-grid arrangement reduces the dependency on the grid and allows users to derive maximum satisfaction without having relied on public power utilities. • Obtaining annual solar radiation data from NiMet and determine the load estimation. • Set up experiment that determine; Battery efficiency, solar panel required and connection mode suitable to achieve the desired current rating, Inverter rating, Charge controller as well appropriate protective devices. • Installation of project compartments and the commissioning tests by categories of load injection.
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    Development of an Ultrasonic-based Digital Height Measurement System
    (Published by the Delta State University Journal, Abraka, Nigeria, 2023-10-27) Olalekan Ogunbiyi; Lambe Mutalub Adesina; Daniel Abayomi Ajala; Isaac Onimisi Yusuf
    This paper presents the design, sensor selection, circuitry, firmware development, and testing of an ultrasonic-based digital height meter. An Atmega328 microcontroller is used in the design to handle sensor measurements as it investigates the utilization of HC-SR04 ultrasonic sensor technology. Firmware was developed in the Arduino IDE environment, and the sketch was uploaded to the microcontroller. The designed circuit was constructed on a Veroboard, and the casing was designed for convenience of use. Ultrasonic digital height meters are more accurate, dependable, and quick when compared to hospital meter rules. The apparatus was mounted at a height of 2 meters to ease the measurement of humans. Results from the measurement of nine people were compared with those of the hospital scale, and a percentage error of 0.55% was obtained. A digital height meter can be a very useful instrument for many different applications, including medical, educational, engineering, and surveying, with careful planning and implementation
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    Development of Embedded Control for a Repetitive Pick and Placed Robotic Arm
    (FUOYE Ado-Ekiti, Nigeria, 2023-06-01) Olalekan Ogunbiyi; Taiwo O. Idowu; Lambe M. Adesina
    Manual execution of tasks is usually strenuous and exhaustive, some tasks may be repetitive in nature such that it requires full concentration. Nowadays, the integration of robotics into commercial and industrial activities to perform repetitive, dangerous, and difficult is becoming a norm. This work focuses on the implementation of a robotic arm. The robotic arm was designed to have six degrees of freedom. The control circuit includes an embedded Atmega328P microcontroller interfaced with servomotors and other glue electronic components such as sensors and buttons. The system is structured and programmed to operate automatically, performing a repetitive routine. The rotation and orientation of the device were tuned by sending required pulse width modulation (PMW) signals to different servomotors, such that they rotate as desired. The system employs six potentiometers in varying the duty cycle generated by the microcontroller. The system is structured such that three servomotors manipulate the motion of the body, the shoulder, the arm elbow, and the base. Manipulations of the end effector were also carried out by another three servomotors, each one controlling the gripper pitch, the movement of gripper spin, and that of the gripper itself. The constructed robotic arm gives a good response when tested for repetitive picking of objects. A similar acceptable performance was repeated in the autonomous lifting and dropping of objects items.
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    Newton-Raphson Algorithm for Power Flow Solution and Application
    (Faculty of Communication and Information Engineering, University of Ilorin, Ilorin, 2020-05-01) Lambe Mutalub Adesina; Olalekan Ogunbiyi; Ganiyu Adedayo Ajenikoko
    Power system insecurity often leads to frequent power system collapse. Experience has shown that power utility companies are generally poor in network argumentation and planning. For example, it is required that any new project must be simulated to ascertain its effects on networks before carrying out the construction. The simulation could be used to investigate the bus voltage profile, power flow, losses, overvoltage condition, etc. Consequently, this paper presents a Newton-Raphson algorithm for power flow solution and the application of the developed Q-basic computer software package to a large power system network. It involves the formulation of algorithms and development of flowcharts which were used to determine the steady-state operating conditions of buses, generation, branch power flows and circuit system losses of the case study network considered. The results obtained are presented and discussed. The fast convergence of the system at the fifth iteration confirmed the effectiveness of the software and the accuracy of the results. Having previously tested the software with a known solution network and work fine, suggest the results obtained are accurate and reliable. Transmission lines with high reactive power need the installation of equipment capable of reducing the reactive power. Buses with voltage values a little less than acceptable standard needs improvement.