2021 IEEE PES/IAS PowerAfrica最新文献_第10页

The Modelling and Simulation Of Power Flow and Fault Analysis For A Hybrid DC Microgrid 混合直流微电网潮流建模与仿真及故障分析

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543441

E. Ojo, M. Zulu, Ajibola O. Akinrinde

{"title":"The Modelling and Simulation Of Power Flow and Fault Analysis For A Hybrid DC Microgrid","authors":"E. Ojo, M. Zulu, Ajibola O. Akinrinde","doi":"10.1109/PowerAfrica52236.2021.9543441","DOIUrl":"https://doi.org/10.1109/PowerAfrica52236.2021.9543441","url":null,"abstract":"The access to electricity is one of the major problems faced by rural areas and isolated regions. Over the years, the fossil-fueled power stations used to generate electricity had a detrimental effects and it has necessitated the need for alternative energy sources such as solar, wind, biomass and other renewable energy sources. Hybrid energy system (HES) based on distributed energy resources (DERs) integration into the DC microgrid is considered as the viable means to carry out the electrification of rural as well as isolated area. However, DC microgrids are limited by the occurrence of faults and this affect their performance. This paper presents the modelling and simulation of power flow and the fault analysis in a hybrid DC microgrid. This hybrid DC microgrid is powered by PV and wind energy system, the formulation, modeling and simulations was implemented in the MATLAB/SIMULINK. The faults analyzed in the system are the DC line-to-ground faults and DC line-to-line faults. Results for a hybrid DC microgrid revealed that high quality of power is experienced in load distribution. Also based on the results, when DC faults occurs there is disturbance to output.","PeriodicalId":370999,"journal":{"name":"2021 IEEE PES/IAS PowerAfrica","volume":"141 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113983921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developing New Thevenin Impedance Determination Technique and Voltage Stability Assessment Index for Online Application 开发新的特维宁阻抗测定技术和在线应用的电压稳定性评价指标

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543381

Ahadu Hilawie, F. Shewarega

引用次数: 1

Performance Analysis of a Nine-Phase Asynchronous Motor with Open-Phase Faults 具有开相故障的九相异步电动机性能分析

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543454

Mpho Glen Maeko, M. Muteba

引用次数: 0

Distribution Transformer Aging Due to COVID-19 Shelter-in-Place COVID-19就地掩体导致配电变压器老化

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543212

K. McBee, Izar Fareez

引用次数: 0

Robust MPPT Tracking for PV Solar Power using Metaheuristic Algorithms 基于元启发式算法的光伏太阳能发电鲁棒MPPT跟踪

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543413

M. Tebaa, M. Ouassaid, Youssef Ait Ali

{"title":"Robust MPPT Tracking for PV Solar Power using Metaheuristic Algorithms","authors":"M. Tebaa, M. Ouassaid, Youssef Ait Ali","doi":"10.1109/PowerAfrica52236.2021.9543413","DOIUrl":"https://doi.org/10.1109/PowerAfrica52236.2021.9543413","url":null,"abstract":"The emphasis of this paper is a study and compare robust of MPP tracking algorithms. In order to achieve the maximum power, a MPPT controller is often associated with photovoltaic panels which controls the DC voltage and current. In this work, Particle Swarm Optimization (PSO), Grey Wolf Optimization (GWO), Perturb and Observe (P&O), and Fuzzy Logic Control (FLC) are used in order to achieve the optimum power conditions. The studied PV system contains six 244 W PV panel implemented in series feeding a resistive load through a controllable DC-DC boost converter. To demonstrate the effectiveness of the proposed techniques under standard test conditions, as well as partial shading conditions, simulations are performed under the MATLAB/Simulink environment. It is revealed in simulation results that the PSO and P&O algorithms are more efficient in locating the effective MPP. Furthermore, when working under partial shading, the traditional P&O and FLC are failing to locate the real MPP. Indeed, those MPPT techniques reach the local power peak, while PSO and GWO reach successfully the effective MPP with an efficiency of 99% and 95% in only 92 ms and 69 ms, respectively.","PeriodicalId":370999,"journal":{"name":"2021 IEEE PES/IAS PowerAfrica","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114943181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Domestic Chicken Chick's Banda using Neuro fuzzy logic technique for reducing energy cost 家鸡鸡班达采用神经模糊逻辑技术降低能耗

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543122

Patrick O. M. Ogutu, N. Oyie, W. Ojenge

引用次数: 0

Review of Grid Interconnection Requirements and Synchronization Controllers for Dispersed Minigrids 分散微型电网的并网要求与同步控制器综述

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543220

M. Degefa, Jonatan Ralf Axel Klemets, S. D'arco, P. Sekhar, Amit Gupta

引用次数: 2

Analysis of the Network Performance and Development of Electricity Transmission Plan: A Case Study of Kenya's Coast Region 电网性能分析与输电计划的发展——以肯尼亚沿海地区为例

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543132

Harrison J.S. Sungu, M. Musau, C. Wekesa

引用次数: 0

Feasibility of Offshore Wind Power for Namibia 纳米比亚海上风力发电的可行性

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543098

Nicky K. Mbaimbai, I. Davidson

引用次数: 0

A Diagnostic Study of Dissolved Gases in Transformers based on Fuzzy Logic Approach 基于模糊逻辑方法的变压器溶解气体诊断研究

2021 IEEE PES/IAS PowerAfrica Pub Date : 2021-08-23 DOI: 10.1109/PowerAfrica52236.2021.9543163

B. A. Thango, A. Nnachi, J. Jordaan, A. Akumu, B. Abe

{"title":"A Diagnostic Study of Dissolved Gases in Transformers based on Fuzzy Logic Approach","authors":"B. A. Thango, A. Nnachi, J. Jordaan, A. Akumu, B. Abe","doi":"10.1109/PowerAfrica52236.2021.9543163","DOIUrl":"https://doi.org/10.1109/PowerAfrica52236.2021.9543163","url":null,"abstract":"Stray gassing of transformer oil is a convoluted physical phenomenon, in which several parameters act simultaneously thus making the understanding of Dissolved Gas Analysis (DGA) more daunting. Historically, prudent maintenance strategies are better conceived by studying the condition of units in service. To alleviate transformer management and decision matrix, transformer condition assessment is critical using unfailing, noninvasive diagnostics and monitoring mechanisms. The diagnosis of stray gassing of oil can be performed by distinguishing and embedding transformer severities using Fuzzy logic (FL) mapping. Despite the fact that the IEC FL approach is handy in the appraisal of dissolved gases, on occasion the DGA results are impossible to match by current codes and consequently providing inconclusive results. This work reveals a supplemental gas ratio C2H6/CH4 based upon trial and error on a fleet of transformers. These supplemental ratio provide more detailed information about the thermal decomposition of transformer oil from various infancy faults and associated degradation gases transforming from Methane (CH4) to Ethane (C2H6) to Ethylene (C2H4). Additionally, in the IEC FL approach, there is no quantitative measure for the possibility of distinct faults. Further, this work provides incipient fault diagnosis mechanism and some guidelines to allow effective planning and maintenance practice.","PeriodicalId":370999,"journal":{"name":"2021 IEEE PES/IAS PowerAfrica","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117058303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1