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Model Predictive Control for Grid-ready Microgrids in developing countries 发展中国家并网微电网的模型预测控制
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219857
Yifu Ding, Avinash Vijay, D. Neal, Daniel J. Rogers, M. Mcculloch
{"title":"Model Predictive Control for Grid-ready Microgrids in developing countries","authors":"Yifu Ding, Avinash Vijay, D. Neal, Daniel J. Rogers, M. Mcculloch","doi":"10.1109/PowerAfrica49420.2020.9219857","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219857","url":null,"abstract":"In an under-resourced environment, the optimal energy management of the off-grid system under the stochastic generation and load is an open technology challenge. To design the least-cost system whilst meeting the reliability requirement, this work develops a predictive control framework based on a real-world microgrid pilot design11This work is supported in part by the Engineering and Physical Sciences Research Council under Grant EP/R030111/1 Robust Extra Low Cost Nano-grids (RELCON). Considering users' preferences and various weather conditions, it employs model predictive control (MPC) and demonstrates superior performance in reliability improvement compared with the day-ahead case. Given the reliability requirements ranging from 70% to 90%, the MPC can achieve the 5.23% improvement with the same system cost, and close to the performance under the perfect foresight.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131074864","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: 2
Design of an Automatic Hybrid Water Heating System 一种自动混合热水系统的设计
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219821
P. Maine, O. M. Longe
{"title":"Design of an Automatic Hybrid Water Heating System","authors":"P. Maine, O. M. Longe","doi":"10.1109/PowerAfrica49420.2020.9219821","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219821","url":null,"abstract":"Heating, Ventilating and Air-conditioning (HVAC) accounts for about 30-50% of energy consumption and expenditure in residential premises. Hence, the need to meet this essential demand affordably and in an environmentally friendly manner. Therefore, an automatic hybrid water heating system (AHWHS) is proposed in this work, to heat up water for bathroom and kitchen use, using power supply from either the utility grid or an installed solar panel depending on certain factors such as availability and cost of solar resource, availability and cost of utility grid supply, water demand by consumers, etc. The AHWHS was designed and constructed by charging a battery from either the utility grid or solar panel, which then powers the direct current coil element to heat up the water needed for use in the home. The AHWHS was found to reduce household energy expenditure by 68.33% and 71.59% during low and high demand seasons respectively.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129649017","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
Analysis of Common-mode EMI in PM Synchronous Machines with Fractional-slot Concentrated Winding 分槽集中绕组永磁同步电机共模电磁干扰分析
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219874
Adisu Teshale, Zhao Zhao, Getachew Biru, R. Leidhold
{"title":"Analysis of Common-mode EMI in PM Synchronous Machines with Fractional-slot Concentrated Winding","authors":"Adisu Teshale, Zhao Zhao, Getachew Biru, R. Leidhold","doi":"10.1109/PowerAfrica49420.2020.9219874","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219874","url":null,"abstract":"The stray capacitances existing between the windings and the frame of the electric machines are the main coupling route of common-mode (CM) electromagnetic interferences (EMI). In this study, the magnitude of parasitic capacitances present in permanent magnet synchronous motor (PMSM) with fractional-slot concentrated winding (FSCW) and conventional-slot distributed winding (DW) are compared through finite element analysis (FEA) simulation. The simulation result shows that a reduced parasitic capacitance and increased CM impedance can be obtained by employing FSCW compared with DW. The Validation of the simulation result is carried out through a practical impedance measurement.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128736939","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
Electricity Consumption Modeling and Medium-Term Forecasting Based on Grouped Grey Model, GGM(1,1) 基于分组灰色模型的电力消费建模与中期预测，GGM(1,1)
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219919
Vincent B. Getanda, P. Kihato, P. Hinga, H. Oya
{"title":"Electricity Consumption Modeling and Medium-Term Forecasting Based on Grouped Grey Model, GGM(1,1)","authors":"Vincent B. Getanda, P. Kihato, P. Hinga, H. Oya","doi":"10.1109/PowerAfrica49420.2020.9219919","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219919","url":null,"abstract":"Global electricity consumption in any developing sector is increasing faster than expected and energy demand forecasting is vital for sound-sustainable energy supply-demand management. Consequently, developing accurate electricity demand forecasting models is inevitable. In this paper we propose the Grouped Grey Model (GGM(1,1)) in modeling medium-term forecasting of electricity consumption. GGM(1,1) is subjected to electricity consumption data scenario to ascertain its ability and applicability in time series data forecasting. In addition, analysis of an empirical example validates data grouping techniques in improving the accuracy of the original grey model. Hence the accuracy of the prediction on electricity consumption is improved due to data grouping techniques. The proposed model can improve energy forecasting performance for future energy plans of management in producing and distributing power. Moreover, it can enhance smart grid benefits.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125774147","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: 4
Performance Evaluation of a Grid-tied PV System in the East Coast of South Africa 南非东海岸并网光伏系统性能评价
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219905
Abayomi Adebiyi, E. Ojo, I. Davidson
{"title":"Performance Evaluation of a Grid-tied PV System in the East Coast of South Africa","authors":"Abayomi Adebiyi, E. Ojo, I. Davidson","doi":"10.1109/PowerAfrica49420.2020.9219905","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219905","url":null,"abstract":"The performance of an experimental grid-tied 8-kW photovoltaic (PV) system installed at the Durban University of Technology, South Africa, was studied between January 2018 to December 2018 for evaluation in terms of the International Electrotechnical Commission (IEC) standard. The annual yielded energy was 16.178 MWh. The annual average final yield and reference yield were 4.93 kWh/kWp/day and 5.59 kWh/kWp/day, respectively. The performance ratio obtained was 87.1%, which is quite above 80 percent, the acceptable industry ratio. The study reveals that Durban is a good location for PV generation. Results obtained were compared to similar studies conducted in Dublin, Morocco, India, and Spain; it shows that this study's final yield and performance ratio is better than what is reported in extant literature.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126098622","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
Thermoplastic Insulation System for Power Cables 电力电缆用热塑性绝缘系统
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219839
D. Wald, Famous O. Igbinovia, Pasi Raikisto
{"title":"Thermoplastic Insulation System for Power Cables","authors":"D. Wald, Famous O. Igbinovia, Pasi Raikisto","doi":"10.1109/PowerAfrica49420.2020.9219839","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219839","url":null,"abstract":"Cross-linked polyethylene (XLPE) is a thermosetting insulation material for power cable applications. It has the characteristic of not being easily recycled. Hence, the development of the polypropylene (PP) insulation technology. The non-crosslinking process of PP helps to maintain its thermoplastic nature. Thermoplastic is a recyclable insulation material for both Alternating Current (AC) and Direct Current (DC) power cable project implementation. This research evaluates the thermoplastic insulated power cable, its production requirement, and installation. The thermo-plasticity, zero-degassing and recyclability attributes of thermoplastic insulation materials make it beneficial for both medium and high voltage power cable projects. Test results further confirm that thermoplastic insulated power cables are better and more reliable than the XLPE based insulation power cables.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126637709","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: 2
Analysis of the Levelized Cost of Electricity (LCOE) of Solar PV Systems Considering their Environmental Impacts on Biodiversity 考虑环境对生物多样性影响的太阳能光伏发电系统平准化电力成本分析
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219929
S. Kibaara, D. Murage, P. Musau, M. Karweru
{"title":"Analysis of the Levelized Cost of Electricity (LCOE) of Solar PV Systems Considering their Environmental Impacts on Biodiversity","authors":"S. Kibaara, D. Murage, P. Musau, M. Karweru","doi":"10.1109/PowerAfrica49420.2020.9219929","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219929","url":null,"abstract":"Large scale solar photo voltaic plants are being developed and implemented at rapid rates and others are being set up to occupy large tracts of land running to millions of acres across the globe. The cascaded environmental impacts of such huge installations are not well addressed in both literature and in the famous techno-economic modelling tools such as HOMER, SAM, INSEL and TRNSYS. This study provides a full cost approach for determining the Levelized cost of Electricity (LCOE). The study incorporates all the costs incurred during generation and operation including the externality costs that have been traditionally omitted by other models. This has been aided by the use of a new software called the ECOS model developed by students of the Jomo Kenyatta University of Science and Technology. The study carries out sizing of Solar PV for Lodwar and the resultant metrics such as LCOE when externalities are included. The novel contribution of this paper is the incorporation of the environmental impacts of Solar PV which has not done by other software tools like HOMER.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"32 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114060234","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
Power Quality with MPPT Controller and Irradiance Uncertainty for Grid-Connected Photovoltaic Energy System 并网光伏能源系统的MPPT控制和辐照度不确定性电能质量
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219861
Julio Fredy Chura Acero, Wilhem R. Limachi Viamonte, Washington M. Soncco Vilcapaza, W. O. P. Pareja
{"title":"Power Quality with MPPT Controller and Irradiance Uncertainty for Grid-Connected Photovoltaic Energy System","authors":"Julio Fredy Chura Acero, Wilhem R. Limachi Viamonte, Washington M. Soncco Vilcapaza, W. O. P. Pareja","doi":"10.1109/PowerAfrica49420.2020.9219861","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219861","url":null,"abstract":"As a result, various phenomena that affect the quality of energy occur, identifying the inverter and converter as the equipment responsible for generating these phenomena. The methodology is based on the dependence of the total harmonic distortion on the current, solar irradiation, inverter output current, RMS voltage for the grid connection point, and active and non-active power registers. It was verified that the results obtained met the criteria established with the energy quality standards for connection to the grid, related to the work of the MPPT converter for each photovoltaic module and the uncertainty of the irradiance. The values of PF varied a lot during the day, reaching desired levels when the injected power approached the inverter rated power. Therefore, low levels of PF can be reduced by increasing the number of modules photovoltaic, since the inverter used is oversized.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123511312","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
The Insight and Foresight of The Nigerian Power Transmission System: An Overview 尼日利亚输电系统的远见与洞察:综述
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219845
A. V. Adebayo, Priye Kenneth Ainah, O. Apata
{"title":"The Insight and Foresight of The Nigerian Power Transmission System: An Overview","authors":"A. V. Adebayo, Priye Kenneth Ainah, O. Apata","doi":"10.1109/PowerAfrica49420.2020.9219845","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219845","url":null,"abstract":"One of the recipes for guaranteed economic growth in any nation is an efficient power system structure which provides continuous supply of electricity for businesses and individuals and the transmission infrastructure of any power system is critical to the supply of constant supply of electricity. The government of Nigeria in the last decade has embarked on several reforms aimed at improving the supply of electricity. Despite this effort a large majority of its over 183 million population still have no access to constant supply of electricity. One of the major reasons for this is the lack of an efficient transmission network which has resulted in frequent recurrent power outages. This paper therefore presents a retrospective insight into the Nigerian transmission system and foresight as well as assessing the opportunities and challenges in the power sector.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131441540","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
Maximum Power Point Tracking with Boost Converter for Solar Laptop Charger 最大功率点跟踪与升压转换器的太阳能笔记本电脑充电器
2020 IEEE PES/IAS PowerAfrica Pub Date : 2020-08-01 DOI: 10.1109/PowerAfrica49420.2020.9219823
Thamsanqa Garth Matsebele, O. M. Longe
{"title":"Maximum Power Point Tracking with Boost Converter for Solar Laptop Charger","authors":"Thamsanqa Garth Matsebele, O. M. Longe","doi":"10.1109/PowerAfrica49420.2020.9219823","DOIUrl":"https://doi.org/10.1109/PowerAfrica49420.2020.9219823","url":null,"abstract":"Off-grid energy solution is becoming a necessity in our country with the unstable electricity supply from the utility provider. Laptop is an essential electronic appliance for individuals, schools and businesses, which you can't afford to be down on power. Remote areas are often challenged by consistent interrupted power supply, thereby delaying or hindering certain work that needs to be done with laptops. Hence, off-grid solar energy solutions is proposed to charge laptop batteries and various electronics with similar specifications for remote area dwellers. However, solar panels are very inefficient when directly connected to load. Therefore, application of maximum power point tracking (MPPT) and pulse width modulation (PWM) to connect solar panels to laptop charger is presented in this work. This was achieved in this work through simulation and hardware implementation.","PeriodicalId":325937,"journal":{"name":"2020 IEEE PES/IAS PowerAfrica","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133075107","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
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