Browsing by Author "O. Ogunbiyi"

Now showing 1 - 5 of 5
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    Development of a distribution transformer substation anti-vandalism using dual surveillance monitoring technique
    (KU8 Consortium International Conference, 2023-08-06) L. M Adesina; O. Ogunbiyi; A. Enoch
    Power system encounter losses such as commercial, non-technical and technical loses. These losses often create serious damages to the power system by reducing the quality of power that is deliverable to the customers. Distribution substations are the most accessible power substation to customers for the supply of electricity. These substations based on their packaging in Nigeria are susceptible to vandalism. This vandalism is becoming a daily occurrence because of high demands for copper and sale of transformer oil in the black market. To minimize the vandalism, this paper presents a development of distribution transformer substation anti-vandalism using dual-surveillance monitoring technique. The method involves a circuitry design that incorporate a PIR sensor to detect human presence in the vicinity of the transformer substation perimeter fencing, a buzzer to sound as an alarm, a GSM module to send out a call/message alerting the operator in charge and a video/camera for surveillance purpose. The system was configured to send video to a dedicated web server in real time when the sensors sense any human presence and also captures image on detection which is sent via email to the operators. A flowchart that illustrates the procedural steps was developed and presented. The device was tested and found perfectly working.
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    Loss Mitigation on Suleja 33kV Network Using STATCOM Device
    (Centre for International Research Development (CIRD) Publications, 2022-04-01) J.K. Ogunjuyigbe; O. Ogunbiyi; L.M. Adesina; S.A. Benson
    The load flow analysis was carried out to establish base voltage at various buses. The buses that have the voltages fall below the prescribed or nominal voltage range between 0.95 and 1.05 p.u. volt are considered as faulty buses. These include bus 1, bus 4 and bus 5 with per unit volts of 1.06, 1.057 and 0.8897p.u respectively. After the incorporation of STATCOM, the p.u. volts at buses 1, 4 and 5 improved to 1.025 p.u., 1.026 p.u. and 1.01 p.u. respectively. The total active power loss without STATCOM is 323.9891MW while that of the reactive power loss 50.07631MVar and the total active power loss with STATCOM is 275.6053MW while that of the reactive power loss is 18.79948MVar. The losses reduced when STATCOM was incorporated into the distribution network. Therefore, the percentage of power system improvement is 17.6% when STATCOM was incorporated.
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    Optimization Analysis of Dual-Mode Renewable Hybrid Power Systems: A Review
    (University of Ilorin, Nigeria., 2024-12-08) B. O. Ariyo; L. M. Adesina; A. Musa; O. Ogunbiyi; B. J. Ojuolape; M. O. Balogun
    The escalating threat of global warming necessitates a shift towards clean energy production, with renewable energy sources emerging as a promising solution for sustainable electricity generation. However, the inherent intermittency of renewables requires hybrid systems to maintain reliable electricity. This review explores the optimization of dual-mode renewable hybrid power systems, which operate in both grid-connected and autonomous modes, to address power stability challenges. By analyzing state-of-the-art methodologies, including advancements in control algorithms, architecture sizing, and energy management strategies, this work identifies methods for enhancing system efficiency and cost-effectiveness. Key findings demonstrate that optimized dual-mode systems improve power consistency and operational resilience. The review concludes by outlining a roadmap for future research, highlighting innovations in integration techniques, environmental assessments, and regulatory collaboration as crucial steps toward maximizing the impact of dual-mode systems in achieving global energy sustainability goals.
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    Optimization Analysis of Dual-Mode Renewable Hybrid Power Systems: A Review
    (NIGERIAN JOURNAL OF TECHNOLOGICAL DEVELOPMENT, UNIVERSITY OF ILORIN, 2024-12-08) B.O. Ariyo; L.M. Adesina; A. Musa; O. Ogunbiyi; B.J. Ojuolape; M.O. Balogun
    The escalating threat of global warming necessitates a shift towards clean energy production, with renewable energy sources emerging as a promising solution for sustainable electricity generation. However, the inherent intermittency of renewables requires hybrid systems to maintain reliable electricity. This review explores the optimization of dual-mode renewable hybrid power systems, which operate in both grid-connected and autonomous modes, to address power stability challenges. By analyzing state-of-the-art methodologies, including advancements in control algorithms, architecture sizing, and energy management strategies, this work identifies methods for enhancing system efficiency and cost-effectiveness. Key findings demonstrate that optimized dual-mode systems improve power consistency and operational resilience. The review concludes by outlining a roadmap for future research, highlighting innovations in integration techniques, environmental assessments, and regulatory collaboration as crucial steps toward maximizing the impact of dual-mode systems in achieving global energy sustainability goals.
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    Transformer Parameters Monitoring for Distribution Network Operation
    (University of Calabar Press & Greenlab International Scientific (GIS), 2019-09-01) L. M Adesina; O. Ogunbiyi
    Distribution transformers (DT) are the most important and costly components among the equipment required in distribution transformer substations. For the stability of electricity supply, more attention is deserved on monitoring of DT operational parameters such as frequency, active power, reactive power, power factor, etc. Distribution transformers are often failed probably as a result of cellulose deterioration, overloading, poor insulation, poor dielectric strength of the oil, old age etc. Experience shows that utility companies in Nigeria are insensitive to the monitoring of these DT's operational parameters which results in sudden breakdown or persistence outages of the feeder. The utility company may be affected with an approximate reduction in monthly revenue collection compared to previous ones. Thus, it becomes necessary to carry out DT operational parameters’ monitoring for all transformers in the circuit. Planning engineers might have several methods of solving this problem and the approach varies from one country to the others due to variation in operational styles. However, this paper presents a case study of 300kVA, 11/0.415kV Transformer for Parameters monitoring in Distribution Network Operation using Power Quality and Energy Analyzer (PQEA) equipment (Fluke 435 Series II). The pre-set network operational parameters recorded or measured were downloaded via personal computer after the experiments. The experimental results and their graphical analyses by excel application are presented. Recommendations for the utility’s operations and maintenance engineers on the field for compliance are presented. The results obtained show that this approach is a reliable way of monitoring DT parameters for the operational planning of distribution networks.