Adamu Abubakar Sa’idu

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Research Article Vol. 15, Issue 1

Development of an Optimal On-Load Tap-Changing Scheme for a Transformer to Improve Power Quality

Ahmad Ibrahim^*, Boyi Jimoh, Adamu Abubakar Sa’idu

Voltage instability remains a major operational challenge in large-scale transmission networks, particularly in developing power systems with increasing load demand. This paper proposes a coordinated on-load tap changer (OLTC) control strategy based on a Hybrid Particle Swarm Optimization–Grey Wolf Optimization (HPSOGWO) algorithm to enhance voltag...

DOI: 10.67203/zjeet.2026.db4xw85g

Sep, 2026 Vol. 15, Issue 1 27 views 7 downloads

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Research Article Vol. 14, Issue 1

A Study on State Estimation of Synchronous Generator using an Improved Unscented Kalman Filter Algorithm

Yahaya Ismail^*, B. Jimoh, Adamu Abubakar Sa’idu

An enhanced Unscented Kalman Filter (UKF) technique for synchronous generator state estimation is presented in this study. The suggested approach overcomes the drawbacks of conventional UKF in managing noise and nonlinearities in power systems. Comparative analysis and validation are made on the tracking performance of Normal Ukf and Improved Ukf (...

DOI: 10.67203/zjeet.2025.r2umjgdz

Sep, 2025 Vol. 14, Issue 1 26 views 12 downloads

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Research Article Vol. 13, Issue 1

Subthreshold Signal Enhancement in a Space-Dependent Damped Van der Pol-Duffing Oscillator via Vibrational Resonance

Usama Bello Ibrahim^*, Hamza Mustapha, Mannir Ahmad, Adamu Abubakar Sa’idu

This paper presents a numerical study of a subthreshold signal enhancement in a Van der Pol-Duffing oscillator, via the phenomenon of vibrational resonance. The oscillator describes a particle motion in a bistable periodic potential, influenced by space-dependent damping and excited by an external bichromatic excitation. Temporal and spectral analy...

DOI: 10.67203/zjeet.2024.o5ohu020

Sep, 2024 Vol. 13, Issue 1 22 views 12 downloads

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Research Article Vol. 12, Issue 1

A Discrete Bat Algorithm Based Optimal Location and Sizing of Power Distribution Substation

Ibrahim Mohammed Manga^*, Adamu Abubakar Sa’idu, Ismaila Mahmud, Mahmud Mustapha, Abdullahi Abubakar, Ibrahim Bashir Shehu

Distribution substation planning is considered one of the most important steps in the power system planning process. A planning model seeks to determine a strategy that will minimize losses and total costs associated with configuring and operating an electric power distribution system over a given planning horizon. Metaheuristic methods are usually...

DOI: 10.67203/zjeet.2023.ppzpuhbt

Sep, 2023 Vol. 12, Issue 1 20 views 9 downloads

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Research Article Vol. 10, Issue 2

DEVELOPMENT OF AN OPTIMIZED DUAL RELAY SETTING COORDINATION SCHEME FOR DISTRIBUTION NETWORK WITH DISTRIBUTED GENERATION

Babatunde Lambo^*, Y. Jibril, Boyi Jimoh, Adamu Abubakar Sa’idu

In Distributed Generation systems (DG), the fault current through a relay in forward direction is mostly higher than in the reverse direction. Thus, it is desirable to have dual setting directional over current relay (DOCR) which can operate for both forward and reverse direction of fault current with two independent relay settings. The presence of...

DOI: 10.67203/zjeet.2021.c40ag5p0

Sep, 2021 Vol. 10, Issue 2 15 views 15 downloads

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Research Article Vol. 10, Issue 2

PLUG IN HYBRID ELECTRIC VEHICLE ENERGY MANAGEMENT DESIGN USING DISCRETE BAT ALGORITHM

S. B Kamal^*, Patrick Ubeh Okorie, Y. Jibril, Adamu Abubakar Sa’idu

This paper presents an energy management for improved battery state of charge (SOC) in Plug-In-Hybrid Electric Vehicle (PHEV). Due to the on-board charging requirement of PHEV engine and generator a means for optimal charging of the battery SOC becomes necessary. This requirement is viewed as an optimal solution of maintaining the best possible bat...

DOI: 10.67203/zjeet.2021.2ybngr6o

Sep, 2021 Vol. 10, Issue 2 16 views 10 downloads