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2019 IEEE PES/IAS PowerAfrica最新文献

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What Went Wrong And How Can We Fix It: Renewable Energy and Mini-Grid Policies in Nigeria 哪里出了问题，我们如何解决:尼日利亚的可再生能源和微型电网政策
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928648
Tam Kemabonta, A. Geoffrey, Oluwatobi O. Apena, Scott Uzzle
{"title":"What Went Wrong And How Can We Fix It: Renewable Energy and Mini-Grid Policies in Nigeria","authors":"Tam Kemabonta, A. Geoffrey, Oluwatobi O. Apena, Scott Uzzle","doi":"10.1109/PowerAfrica.2019.8928648","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928648","url":null,"abstract":"The Nigerian Electricity Regulatory Commission (NERC), which is the independent government agency responsible for regulating the electricity sector, in 2016, approved a regulatory framework that aims to accelerate the electrification of the country, where only 59% of its population have access to electricity and for only about 35.8 hours a week on average, through minigrids – isolated and interconnected. This was done to facilitate investment from private entities into the country’s unreliable electricity infrastructure. In this paper we analyze this policy, identifying potential problems in it and proffering solutions to these problems. We also review Nigeria’s quest to come up with a coherent strategy for harnessing its renewable energy resources. The obstacles were identified, and solutions were proffered.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123135582","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
Optimal Capacitor Placement in Distribution Systems using Improved Bacterial Foraging Algorithm 基于改进细菌觅食算法的配电系统电容器优化配置
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928867
Salamatu A. Sani, G. Bakare, Y. S. Haruna, A. I. Isa, U. Musa
{"title":"Optimal Capacitor Placement in Distribution Systems using Improved Bacterial Foraging Algorithm","authors":"Salamatu A. Sani, G. Bakare, Y. S. Haruna, A. I. Isa, U. Musa","doi":"10.1109/PowerAfrica.2019.8928867","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928867","url":null,"abstract":"One of the major issues affecting the quality of electric power being delivered on the distribution system is power losses. To reduce the losses on distribution systems, one of the approaches considered is optimal siting and sizing capacitors on these systems. This paper presents Improved Bacterial Foraging Algorithm (IBFA) as an effective method to optimally site and size capacitors on radial distribution system (RDS) with the aim of minimizing power loss and improving the voltage profile. A simple load flow based on the Bus Injected to the Branch Current matrix (BIBC) technique is used and coded in a MATLAB environment. The approach effectiveness is demonstrated on a standard IEEE 33-bus RDS and a practical 50-bus Canteen feeder of Zaria system located in Nigeria. The proposed approach proved to be effective with improvement in the voltage profile to 38.67% and power loss reduction of 14.81% on the 33-bus system.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132644367","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: 3
Distributed Generation with Photovoltaic Power Prediction in Remote Microgrid Application 分布式发电与光伏发电功率预测在远程微网中的应用
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928765
Raymond O. Kene, T. Olwal, Daniel S. P. Chowdhury
{"title":"Distributed Generation with Photovoltaic Power Prediction in Remote Microgrid Application","authors":"Raymond O. Kene, T. Olwal, Daniel S. P. Chowdhury","doi":"10.1109/PowerAfrica.2019.8928765","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928765","url":null,"abstract":"Distributed generation with Solar photovoltaic power integration is gaining wide acceptance and popularity into grid electricity networks and remote microgrids are better positioned to benefit from this integration. The cost of fossil fuel consumption has a huge negative impact on our environment, most especially with greenhouse gas emission of CO2. Most of the remote microgrids for electrical power supply are largely powered by diesel fuel and thus increases the amount of environmental pollution around us today. It is possible to reduce drastically the use of fossil fuel by remote microgrids, if solar photovoltaic (SPV) power is considered as an alternative power source to supplement microgrid power generation. It is a known knowledge that SPV is unpredictable due to the variability in its power generation caused by intermittent solar irradiance. It becomes inevitable that SPV power be predicted to allow for efficient energy management in microgrid application. The accurate prediction of SPV electrical power generation, will assist in the accurate estimation of SPV electrical power supply required to support microgrid load and provides for an optimal scheduling of the limited SPV power. By extension, this will reduce the operational cost of diesel fuel consumption in remote microgrids and allow for cleaner energy supply to our environment. In this research paper, the focus lies in the use of artificial neural network as a technique to predict SPV power supply for remote microgrid power management.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134584422","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
Fault Current Contribution from Renewable Energy Sources on Distribution Network Protection Schemes 可再生能源对配电网保护方案的故障电流贡献
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928630
Uzubi Uma, Aurthr Ekwue, Ejiogu Emelike
{"title":"Fault Current Contribution from Renewable Energy Sources on Distribution Network Protection Schemes","authors":"Uzubi Uma, Aurthr Ekwue, Ejiogu Emelike","doi":"10.1109/PowerAfrica.2019.8928630","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928630","url":null,"abstract":"The integration of renewable energy sources influences the reliability and operation of the protection scheme of a distribution network due to the infeed effect. Using the Katsina wind farm as a case study and modelled in ETAP software, the objective of this paper is to analyze the impact of fault current contribution on the protection scheme considering its penetration level. The results show the need to review protection scheme settings prior to the installation of a new renewable energy source (RES). Secondly, the paper provides an alternative method of protection scheme coordination to reduce frequent review of the settings during the integration of new RES to the network. The method requires digital relays with telecommunication features and setting-group functions at both ends of the feeder.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129541942","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
Comparative Study of the Voltage Drops Estimation on Electrical Distribution grid: Case study of the Togolese Company of Electricity and Energy grid 配电网电压降估算的比较研究——以多哥电力和能源电网公司为例
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928838
Yao Bokovi, A. A. Salami, Koffi Mawugno Kodjo, K. A. Dotche, K. Bedja
{"title":"Comparative Study of the Voltage Drops Estimation on Electrical Distribution grid: Case study of the Togolese Company of Electricity and Energy grid","authors":"Yao Bokovi, A. A. Salami, Koffi Mawugno Kodjo, K. A. Dotche, K. Bedja","doi":"10.1109/PowerAfrica.2019.8928838","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928838","url":null,"abstract":"This paper has evaluated a comparative study of the voltage drops on electrical distribution grid by a simulation platform. The computation of the voltage drop computation was done by the use of two methods. Firstly, with the help of a simplified power line model a theoretical calculation has been performed. The considered distribution networks, which can be splitted broadly into two the high and low tension: the high-tension has two classes A and B (High Tension class A denoted as HTA); and low voltage (LV), which has also two classes A and B. The second method has consisted in modelling the HTA distribution’s power grid in Matrix Laboratory (MatLab) software using the Power System Analysis Toolbox (PSAT) as a simulation platform. Both methods were compared against the data of the voltage drops that were obtained from the electricity utility. The results have shown that the implemented PSAT’s model has given a reliable and fast consistent computation as compared to the conventional classical calculation method. The proposed designed model in the PSAT’s application could be useful in the decisions such as the voltage drop correction, maintenance, planning, and for the reliability of the HTA power grid.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122180977","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 Maximum Power Point Tracking Solar Charge Controller using Incremental Method 使用增量法设计最大功率点跟踪太阳能充电控制器
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928762
Ahmed Ali
{"title":"Design of Maximum Power Point Tracking Solar Charge Controller using Incremental Method","authors":"Ahmed Ali","doi":"10.1109/PowerAfrica.2019.8928762","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928762","url":null,"abstract":"Renewable Energy Resources are becoming the best and preferred way of producing Electricity. This system consists of solar cells, which are the source of the voltage and current,. Its big advantage also includes being a cleaner source of energy as compared to some conventional ways of producing Electricity. However, harvesting the Energy cost effectively and efficiently has become a major challenge and hence many researchers are busy trying to find solutions. The solution implemented here is an efficient solar charge controller that continuously tracks the maximum power point and delivers the maximum possible power to the Battery or Battery Bank at any given point in time. A Buck Converter with a Maximum Power Tracking algorithm.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127232043","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 a Load Monitoring System 负载监测系统的设计
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928652
Thabo Mashee, Nico Steyn, S. Daniel Chowdhury
{"title":"Design of a Load Monitoring System","authors":"Thabo Mashee, Nico Steyn, S. Daniel Chowdhury","doi":"10.1109/PowerAfrica.2019.8928652","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928652","url":null,"abstract":"The paper comprises of a design of a Load Monitoring System (LMS) for Launch and Recovery Systems (LARS). The LARS is designed to deploy and retrieve divers from and to the host vessel in offshore operations. LARS are utilized by offshore companies to enable divers to execute work at depths up to 300 meters. LARS in the market rely on human interface and monitoring systems that do not compensate for system errors and dynamic loads experienced by the LARS. Current systems are still subject to loss of power, control system errors, electrical and mechanical failures. Present systems rely heavily on the mechanical structure to compensate for most of the errors. Improving these factors, will result in the reduction of costs and increase of the overall life cycle. This project will include real-time load monitoring system analysis of the dynamic loads applied to a Bell’s LARS.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116651341","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
Design, Manufacturing and Testing of a Standard Current Transformer 标准电流互感器的设计、制造和测试
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928879
Fulufhelo Tshisikhawe, M. J. Lencwe, S. Daniel Chowdhury
{"title":"Design, Manufacturing and Testing of a Standard Current Transformer","authors":"Fulufhelo Tshisikhawe, M. J. Lencwe, S. Daniel Chowdhury","doi":"10.1109/PowerAfrica.2019.8928879","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928879","url":null,"abstract":"This paper presents the design and manufacturing of a Current Transformer (CT). The results obtained from the manufactured transformer were used for protection and measurement systems. The transformer was designed based on a specification provided by the power utility Eskom (i.e. not available in the markets). The designed and manufactured type a Current transformer is of post hairpin and oil filled. The main components of the design includes; primary bar, secondary cores, insulator and steel tank. CTPEA software was used for simulation and CT Analyzer was used for testing.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130308948","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
Comparison of Dynamic Behaviors between a Synchronous Reluctance Motor with Brass Rotor Bars and a Squirrel Cage Induction Motor 铜转子磁阻同步电动机与鼠笼式异步电动机的动态特性比较
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928746
M. Muteba
{"title":"Comparison of Dynamic Behaviors between a Synchronous Reluctance Motor with Brass Rotor Bars and a Squirrel Cage Induction Motor","authors":"M. Muteba","doi":"10.1109/PowerAfrica.2019.8928746","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928746","url":null,"abstract":"In this paper, the comparison of transient behavior and dynamic responses between a three-phase Synchronous Reluctance Motor (SynRM) with brass rotor bars and a conventional squirrel cage three-phase induction motor (SCIM) is presented. Both machines have identical NEMA frame stators. The practical tests were performed in order to analyze the transient characteristics and dynamic responses when there is a sudden change in mechanical load. Although the results evidenced that at standstill, the SynRM with brass rotor bars developed an induction torque with peak-to-peak values slightly lower than the squirrel cage induction motor, but the reluctance torque of the SynRM with brass rotor bars has been noticed to have a cumulating effect on the accelerating torque. Furthermore, the results also proved that SynRM with brass rotor bars had shorter time dynamic responses and low steady-state no-load and load current compared to the SCIM.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"2010 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123922641","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: 3
Harvesting Energy From Flow Induced Vibration In Fixed-Fixed And Fixed-Pinned Suported Pipleline: Numerical Approach 固定-固定-固定-固定支撑管道流激振动能量收集:数值方法
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928880
Binta Usman, Adamu S.S., T. J. Mohammed
{"title":"Harvesting Energy From Flow Induced Vibration In Fixed-Fixed And Fixed-Pinned Suported Pipleline: Numerical Approach","authors":"Binta Usman, Adamu S.S., T. J. Mohammed","doi":"10.1109/PowerAfrica.2019.8928880","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928880","url":null,"abstract":"This work investigates the possibility of using flow induced vibration (FIV), in a pipeline as an excitation source for piezoelectric energy harvesting mechanism, using model based approach. Mathematical (Partial and Ordinary Differential Equations) models describing the dynamics of FIV, and of vibration excited piezoelectric transducer, obtained from literature, are used. Algorithms for numerical (finite difference method) solution of the FIV models are developed. The developed algorithms are simulated using MatLab software to obtain the vibrations (transverse accelerations) of pipeline conveying fluid under fixed-fixed and fixed-pinned support. Then simulations of the modified Single Degree of Freedom (SDOF) model of the piezoelectric transducer are carried out using the simulated vibrations as base excitations. A power output of 0.027μ watts with 2.13g acceleration value and 0.0016 and 0.16g acceleration for fixed-fixed and fixed-pinned respectively.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115316875","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
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