SAIEE Africa Research Journal最新文献

Notes for authors 作者须知

IF 0.8

SAIEE Africa Research Journal Pub Date : 2026-02-06 DOI: 10.23919/SAIEE.2026.11373453

引用次数: 0

Analytical model for optimal energy storage sizing in low voltage networks in South Africa 南非低压电网最优储能规模分析模型

IF 0.8

SAIEE Africa Research Journal Pub Date : 2026-02-06 DOI: 10.23919/SAIEE.2026.11373472

Franck C. Mushid;Mohamed F. Khan

{"title":"Analytical model for optimal energy storage sizing in low voltage networks in South Africa","authors":"Franck C. Mushid;Mohamed F. Khan","doi":"10.23919/SAIEE.2026.11373472","DOIUrl":"https://doi.org/10.23919/SAIEE.2026.11373472","url":null,"abstract":"Energy storage plays a pivotal role in integrating renewable energy sources into low-voltage (LV) networks, especially in South Africa, where electricity grids are plagued by challenges such as reliability issues, frequent load-shedding, voltage instability, and aging infrastructure. This paper presents a comprehensive mathematical framework for optimizing the sizing of battery energy storage systems (BESS) in South African LV networks. The model focuses on minimizing the total cost of ownership (TCO) by balancing the trade-offs between capital investments, operational expenses, and lifecycle costs of energy storage systems. Additionally, the study aims to enhance grid stability by mitigating voltage fluctuations, reducing peak loads, and improving frequency regulation, all of which are critical for ensuring the resilience of the power network. By enabling smoother integration of intermittent renewable energy sources, particularly solar photovoltaic (PV), the model also seeks to maximize renewable energy utilization by minimizing energy curtailment and storing surplus energy for later use. Furthermore, the optimized BESS configuration helps reduce peak grid imports by discharging stored energy during periods of high demand, thus decreasing reliance on centralized generation and alleviating the impacts of load-shedding. Using mixed-integer linear programming (MILP) and real-world data on energy demand and renewable generation profiles, the study reveals that optimal BESS sizing can reduce the total cost of ownership by up to 25%, curtail renewable energy wastage by 15%, and lower peak grid imports by 30% These findings provide actionable insights for policymakers, energy planners, and stakeholders, emphasizing the critical role of BESS in transforming South Africa's LV networks into more resilient, sustainable, and economically efficient systems while addressing growing energy demands and renewable integration challenges.","PeriodicalId":42493,"journal":{"name":"SAIEE Africa Research Journal","volume":"117 1","pages":"13-22"},"PeriodicalIF":0.8,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11373472","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122742","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing transmission rate in BSC model-based Middleton Class-A noise impaired channel with transceiver side information 利用收发端信息优化基于BSC模型的米德尔顿a类噪声受损信道的传输速率

IF 0.8

SAIEE Africa Research Journal Pub Date : 2026-02-06 DOI: 10.23919/SAIEE.2026.11373467

Fatma Rouissi;A. J. Han Vinck

{"title":"Optimizing transmission rate in BSC model-based Middleton Class-A noise impaired channel with transceiver side information","authors":"Fatma Rouissi;A. J. Han Vinck","doi":"10.23919/SAIEE.2026.11373467","DOIUrl":"https://doi.org/10.23919/SAIEE.2026.11373467","url":null,"abstract":"This paper introduces a Binary Symmetric Channel (BSC) model, which leads to a simple and practical representation for channels corrupted by the Middleton Class-A impulse noise, such as Powerline communication channels. The proposed BSC channel is based on a variable transition probability according to a Poisson distribution. The average transition probability, which provides insight into the error rate, as well as the capacity bounds for this channel are analyzed in all cases of informed and non-informed transmitter and/or receiver. Particularly, an achievable transmission rate is determined in case of informed transmitter by proposing a suboptimum solution that involves employing a variable transmitted energy, proportional to the known noise variance. Analytical formulation of the achievable rate and simulation results in case of a binary Frequency Shift Keying communication system allow to conclude that the channel state information at the receiver side is helpful when the transmitter is non-informed and uses a fixed transmitted energy. However, it no longer contributes to significant performance enhancement when the transmitter is informed.","PeriodicalId":42493,"journal":{"name":"SAIEE Africa Research Journal","volume":"117 1","pages":"23-30"},"PeriodicalIF":0.8,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11373467","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Container electronic tag test system design and experimental method research 集装箱电子标签测试系统设计与实验方法研究

IF 0.8

SAIEE Africa Research Journal Pub Date : 2026-02-06 DOI: 10.23919/SAIEE.2026.11373471

Shibo Xu;Wensheng Cao;Jichun Li;Bencheng Luo;Jing Wang;Yongming Zhang

引用次数: 0

Editors and reviewers 编辑和审稿人

IF 0.8

SAIEE Africa Research Journal Pub Date : 2026-02-06 DOI: 10.23919/SAIEE.2026.11373476

引用次数: 0

Editors and reviewers 编辑和审稿人

IF 0.8

SAIEE Africa Research Journal Pub Date : 2025-08-18 DOI: 10.23919/SAIEE.2025.11129189

引用次数: 0

Notes for authors 作者须知

IF 0.8

SAIEE Africa Research Journal Pub Date : 2025-08-18 DOI: 10.23919/SAIEE.2025.11129187

引用次数: 0

An investigation into the technology transfer barriers of the electronic train control systems installed on the South African railway network — A study into SA's freight rail operator 对南非铁路网络上安装的电子列车控制系统的技术转移障碍的调查-对南非货运铁路运营商的研究

IF 0.8

SAIEE Africa Research Journal Pub Date : 2025-08-18 DOI: 10.23919/SAIEE.2025.11129188

Simphiwe D. Mtanti;Getnet B. Fanta

{"title":"An investigation into the technology transfer barriers of the electronic train control systems installed on the South African railway network — A study into SA's freight rail operator","authors":"Simphiwe D. Mtanti;Getnet B. Fanta","doi":"10.23919/SAIEE.2025.11129188","DOIUrl":"https://doi.org/10.23919/SAIEE.2025.11129188","url":null,"abstract":"Technology transfer is the process of moving technology for use and understanding from one organisation to another for the technology recipient to achieve and implement technology developments and innovations. The technology transfer process is a complex, volatile and iterative one, which requires the flow of information and knowledge between the transferor and the transferee. This qualitative research aims to identify and investigate barriers to the technology transfer of the electronic train control projects undertaken by a South African freight rail operator (FRO) to upgrade its train control systems on several pilot sites. Ten staff members involved in the FRO's project management, maintenance, operations and training functions were interviewed. They have worked or are working on the various installed electronic train control systems. The thematic analysis findings revealed that the FRO is not equipped to exploit and further develop the technology. The barriers that contribute to this include the loss of vital skills internally, the project management of these technology transfer projects and the lack of flexibility of the technology regarding the local conditions and requirements of the FRO. The broadly analysed impact of the loss of skills in freight rail operations resulted in skills retention, adding to the initially proposed research model as a factor that contributes to the technology transfer process alongside learning, the transferor and transferee environment, language and procurement. Including a technology transfer office (internally or externally) could mitigate most of the identified barriers.","PeriodicalId":42493,"journal":{"name":"SAIEE Africa Research Journal","volume":"116 4","pages":"140-149"},"PeriodicalIF":0.8,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11129188","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a solar photovoltaic-biogas hybrid microgrid for off-grid rural communities in Uganda 为乌干达离网农村社区开发太阳能光伏-沼气混合微电网

IF 0.8

SAIEE Africa Research Journal Pub Date : 2025-08-18 DOI: 10.23919/SAIEE.2025.11129186

Emmanuel Wokulira Miyingo;David Sunday Tusubira;Roseline Nyongarwizi Akol;Sheila N. Mugala;Davis Kayiza Kawooya

{"title":"Development of a solar photovoltaic-biogas hybrid microgrid for off-grid rural communities in Uganda","authors":"Emmanuel Wokulira Miyingo;David Sunday Tusubira;Roseline Nyongarwizi Akol;Sheila N. Mugala;Davis Kayiza Kawooya","doi":"10.23919/SAIEE.2025.11129186","DOIUrl":"https://doi.org/10.23919/SAIEE.2025.11129186","url":null,"abstract":"Electricity is vital for social-economic growth and development. However, over 80% of rural dwellers in Uganda do not have access to it due to the absence of the national electricity grid. Most rural inhabitants use biomass to meet their energy needs using primitive conversion devices, e.g., the 3-stone stoves. They are mainly agricultural and generate a lot of waste, whose disposal is usually open dumping and burning. Such practices lead to environmental concerns and limited economic opportunities. This research aimed to address energy poverty and waste management in off-grid Ugandan communities. The study focused on solar photovoltaic (PV)-biogas hybrid microgrids as a potential solution, given the abundance of solar and bio-waste, particularly animal dung. Field surveys were conducted in Mubende District to gather data on energy usage, appliances, and demographics. Technical simulations and financial analyses were performed for different energy supply scenarios. The results indicated that the solar PV-biogas hybrid system was financially viable, with positive internal rate of return, net present value, and return on investment, whereas solar PV only was not. A pilot project was successfully implemented in one community with seven end users and has been operating since April 2024. The feedback from the end users is full of praise and excitement, and many more users wish to be connected. The study concluded that solar PV-biogas hybrid microgrids can be a valuable solution for providing energy access to off-grid communities in Uganda. Scaling up such systems is recommended to address the energy needs of such areas.","PeriodicalId":42493,"journal":{"name":"SAIEE Africa Research Journal","volume":"116 4","pages":"150-159"},"PeriodicalIF":0.8,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11129186","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144868367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A deep learning-based channel estimation scheme for cell-free massive MIMO systems 一种基于深度学习的无小区大规模MIMO系统信道估计方案

IF 0.8

SAIEE Africa Research Journal Pub Date : 2025-08-18 DOI: 10.23919/SAIEE.2025.11129185

Malcolm Sande;Giscard Binini

引用次数: 0