Research Article
Monitoring the Evolution of Electricity Consumption Parameters in Mamou, Guinea, from 2020 to 2021
Issue:
Volume 14, Issue 1, March 2026
Pages:
1-6
Received:
19 December 2025
Accepted:
31 December 2025
Published:
30 January 2026
Abstract: Accurate monitoring of electricity consumption is essential for the efficient operation and planning of power distribution systems, particularly in rapidly growing urban areas of developing countries. This article analyzes the evolution of electricity consumption parameters in the city of Mamou (Guinea) over the period 2020-2021, based on annual peak load statistics and energy consumption data for the main lines of the Guinean Electricity Company (EDG) for the years 2020 and 2021. The study aims to characterize consumption trends, load profiles, and factors influencing electricity demand. It analyzes the electricity consumption of the urban municipality of Mamou in order to understand and evaluate the demand for electrical energy in Mamou in order to highlight the capacity of the station in relation to the demand of the municipality in the future. The methodology relies on the statistical analysis of monthly consumption, active and reactive power demand, power factors, and current demand for the various feeders, supplemented by an interannual comparison. The results reveal a noticeable increase in electricity demand, reflecting population growth, urban expansion, and increased socio-economic activities. Seasonal variations in consumption are clearly observed, with higher demand during the dry season due to intensified commercial activities and residential energy use. The results highlight a significant variation in consumption between 2020 and 2021, marked by the impact of the COVID-19 pandemic in 2020 and a gradual resumption of activity in 2021. The analysis of peak demand indicates increasing stress on the existing distribution infrastructure, while power factor trends highlight the persistent presence of reactive power consumption in the network. Furthermore, the load factor values suggest suboptimal utilization of installed capacity, pointing to opportunities for improved demand-side management and reactive power compensation. The findings emphasize the importance of continuous monitoring of consumption parameters to support network optimization, loss reduction, and investment planning. This work provides useful insights for utilities and decision-makers seeking to enhance the reliability and efficiency of electricity supply in Mamou and other medium-sized cities in Guinea with similar characteristics.
Abstract: Accurate monitoring of electricity consumption is essential for the efficient operation and planning of power distribution systems, particularly in rapidly growing urban areas of developing countries. This article analyzes the evolution of electricity consumption parameters in the city of Mamou (Guinea) over the period 2020-2021, based on annual pe...
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Research Article
Hydrodynamic Performance Enhancement of a Lift-type Vertical-axis In-pipe Water Turbine Using a Flow Deflector:
A CFD-based Parametric Study
Issue:
Volume 14, Issue 1, March 2026
Pages:
7-20
Received:
16 January 2026
Accepted:
27 January 2026
Published:
11 February 2026
Abstract: The use of existing water distribution infrastructure for micro-hydropower generation offers a practical pathway toward decentralized and low-carbon energy production. Lift-type vertical-axis water turbines (VAWTs) are particularly attractive for in-pipe applications because they operate independently of flow direction and can achieve relatively high efficiency at moderate rotational speeds. However, their performance is often constrained by unsteady flow behavior, torque fluctuations, and associated pressure losses in confined pipeline environments. This study numerically investigates the effectiveness of a stationary flow deflector in enhancing the hydrodynamic performance of a lift-type vertical-axis in-pipe water turbine. Three-dimensional unsteady computational fluid dynamics (CFD) simulations were conducted to evaluate turbine operation with and without a deflector under gravity-fed pipeline conditions. The effects of blade number and tip-speed ratio were systematically examined. Key performance indicators, including instantaneous and time-averaged torque, power output, pressure drop, and hydraulic efficiency, were quantified and compared. The results show that the introduction of the flow deflector significantly improves flow guidance toward the windward blades, leading to stronger lift generation and reduced flow separation. Across the investigated operating range, the deflector-assisted turbine achieved torque increases of approximately 20-30% and power output improvements of up to 30-40% relative to the baseline configuration without a deflector. Peak hydraulic efficiency was observed at moderate tip-speed ratios, with efficiency gains of approximately 15-25%. At the same time, the additional pressure loss introduced by the deflector remained limited, typically below 5% of the equivalent pressure head. Furthermore, torque fluctuations were noticeably reduced, indicating more stable turbine operation. These findings demonstrate that flow deflectors can effectively mitigate the unsteady hydrodynamic limitations of lift-type in-pipe turbines while preserving acceptable pressure losses, providing new design insights for micro-hydropower energy recovery in water distribution networks.
Abstract: The use of existing water distribution infrastructure for micro-hydropower generation offers a practical pathway toward decentralized and low-carbon energy production. Lift-type vertical-axis water turbines (VAWTs) are particularly attractive for in-pipe applications because they operate independently of flow direction and can achieve relatively hi...
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,
Ansoumane Sakouvogui
