http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/91 2026-05-02T21:35:40Z 2026-05-02T21:35:40Z Uwaechi, P.C Ezechukwu, O.A Yisa, M.S Okolie, D.A http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30735 2026-04-30T18:24:39Z 2018-02-25T00:00:00Z

Title: Contingency Analysis of 330kv Nigeria Network Authors: Uwaechi, P.C; Ezechukwu, O.A; Yisa, M.S; Okolie, D.A Abstract: This paper highlights the contingency analysis of Nigeria 330kV network to examine the risk of possible contingencies posed to the network under generators outage condition. The problems of the system in future are equipment malfunctions, under voltage at various buses, shortage of reactive power support, increased transmission losses and the tendency of system collapse. The design and simulation of the network was carried-out using power world simulator. The analysis was done using Newton- Raphson AC power flow method. Thereafter, three generators outage applied in the network was resolved using double circuit and reactive power compensation remedial actions. Consequently, a stable network that ensured adequate power delivery to the end users was achieved. Description: Component outages in the distribution systems account for the absolute majority of the faults that result in an interruption of supply for the end consumers (Billinton and Allan, 1994). The consequences to modern society of a large interruption of supply (blackout) in the transmission system are considerable high. Important and vulnerable functions in the society, such as telecommunication, heating and water supply, normally function a few hours after an interruption of supply. Local backup generators can be available for some of the critical functions in the society, but this requires an organized distribution of fuel to the affected areas. The associated cost for the society of a large scale interruption is significant (Wacker and Billinton, 1989).

2018-02-25T00:00:00Z Anozie, R.N Ajiboye, A.O Owoeye, A.S Adebayo, T.M Yisa, M.S http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30733 2026-04-30T18:19:43Z 2024-06-12T00:00:00Z

Title: ASSESSMENT OF THE LOGISTICS OF SCHOOL FEEDING PROGRAMME IN CHANCHAGA LOCAL GOVERNMENT AREA, NIGER STATE, NIGERIA. Authors: Anozie, R.N; Ajiboye, A.O; Owoeye, A.S; Adebayo, T.M; Yisa, M.S Abstract: The importance of logistics to the successful implementation of school feeding programme (SFP) cannot be overemphasised. It is on this premise that the study assessed the logistics involved in providing meals to students within the public primary schools in Chanchaga Local Government Area (LGA) of Niger State. The study covered activities such as sourcing of food, transportation, storage and distribution. Questionnaire and direct observation were used for data collection. Descriptive analytical method were used to analyse derived data. Findings revealed that crop grown by the network of local farmers within the State were the sources of food for the SFP. The food are locally sourced from all the 25 LGA in Niger State. Out of the 25 LGA in the State, rice is being sourced from 8 LGA which represents 32% while soya beans is being sourced from 5 LGA which represents 20% of the location where food is being sourced. Trucks were used by Local Farmers to transport raw food to Chanchaga LG Secretariat (distribution centre). Maikunkele being the proximate settlement to distribution centre, covers an estimated distance of 10km while Edati LGA being the farthest distance covers an average distance of 121km to the food distribution centre. The women (540) recruited as cooks (vendors) for the SFP were recruited from various communities where the benefiting public primary schools are located. Raw food are collected at the distribution centre by the cooks, transformed into cooked food in their individual homes and packaged in coolers for the feeding of the pupils based on the State Government approved feeding menu. The cooks live near the schools, hence, do not need to cover long distances in order to convey the food to the schools. Among the nine major constraints identified, corruption (M=4.39) and poor remuneration of cooks (M=4.25) were ranked highest while the least of the challenges to effective implementation of SFP in the State is political interference (M=3.21).The study recommends amongst others, that the State Government should provide better storage facilities to prevent spoilage and wastages of farm produces supplied by farmers within the locality. Description: Examining the logistics of school feeding initiatives within Chanchaga Local Government Area of Niger State is a critical undertaking aimed at gauging the efficacy and efficiency of these programs in addressing nutritional requirements and educational outcomes. Such feeding schemes have emerged as pivotal interventions in the fight against malnutrition and the enhancement of school attendance and academic performance, particularly in economically disadvantaged regions like Chanchaga. However, the triumph of these initiatives heavily hinges on the seamless execution of logistical tasks encompassing procurement, transportation, storage, and distribution of food commodities to educational institutions (Adebisi et al., 2020). Given the intricate nature of logistics management within the sphere of school feeding programs, a thorough evaluation becomes imperative to pinpoint challenges, identify lacunae, and unearth avenues for enhancement, thereby ensuring the uninterrupted provision of nourishing meals to schoolchildren

2024-06-12T00:00:00Z Enesi Asizehi Yahaya, Mark Nwohu Henry Ohize, . Imoru Usman N. Galadima http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30639 2026-04-28T16:50:02Z 2013-05-16T00:00:00Z

Title: Harmonic Reduction Using Fractional Pitch Windin Authors: Enesi Asizehi Yahaya, Mark Nwohu; Henry Ohize, . Imoru; Usman N. Galadima Abstract: The power source and the nonlinear loads on transmission line are major sources of harmonics and if these harmonics are not controlled, they could lead to heat loss, break down of machines and reducing the efficiency of any machine connected to the supply. The non-sinusoidal currents from the power source increase harmonic contents in the air gap of electrical machines with pole pitch winding which will lead to excessive losses, vibration and noise. This paper presents the use of fractional pitch winding technique for the stator of three phase motor for the purpose of suppressing harmonics. This is investigated between two windings of pole pitch and short-pitch and the results simulated using Emetor Electric Motor software. Description: The effects of harmonics on rotating machines are the copper and iron losses which produce heat and thereby reducing the efficiency of the machine. The pulsating torque produced was due to the interaction of the harmonics-generated magnetic fields and the fundamental. These result in a higher audible noise.

2013-05-16T00:00:00Z Ahmad Abubakar Sadiq, Mark N. Nwohu Jacob Tsado, Ahmad A. Ashraf Agbachi E. Okenna, Enesi A. Yahaya Ambafi James Garba http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30637 2026-04-28T16:30:07Z 2015-05-27T00:00:00Z

Title: Available Transmission Transfer Efficiency (ATTE) as an Index Measurement for Power Transmission Grid Performance Authors: Ahmad Abubakar Sadiq, Mark N. Nwohu; Jacob Tsado, Ahmad A. Ashraf; Agbachi E. Okenna, Enesi A. Yahaya; Ambafi James Garba Abstract: Transmission system performance analysis is vital to proper planning and operations of power systems in the presence of deregulation. Key performance indicators (KPIs) are often used as measure of degree of performance. This paper gives a novel method to determine the transmission efficiency by evaluating the ratio of real power losses incurred from a specified transfer direction. Available Transmission Transfer Efficiency (ATTE) expresses the percentage of real power received resulting from inter-area available power transfer. The Tie line (Rated system path) performance is seen to differ from system wide (Network response) performance and ATTE values obtained are transfer direction specific. The required sending end quantities with specified receiving end ATC and the receiving end power circle diagram are obtained for the tie line analysis. The amount of real power loss load relative to the available transfer capability gives a measure of the transmission grid efficiency Description: This paper gives a novel method to determine the transmission efficiency by evaluating the ratio of real power losses incurred from a specified transfer direction. Available Transmission Transfer Efficiency (ATTE) expresses the percentage of real power received resulting from inter-area available power transfer

2015-05-27T00:00:00Z