2019 IEEE PES/IAS PowerAfrica最新文献

Power Scheduling In a Smart Home Using Earliglow Optimization 基于Earliglow优化的智能家居电力调度

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928788

R. Chidzonga, B. Nleya

引用次数: 1

Development of an IGBT-Diode based Fault Current Limiter for Fault Ride-Through Enhancement in Microgrid Application 基于igbt二极管的故障限流器在微电网中的应用

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928637

E. Buraimoh, I. Davidson

{"title":"Development of an IGBT-Diode based Fault Current Limiter for Fault Ride-Through Enhancement in Microgrid Application","authors":"E. Buraimoh, I. Davidson","doi":"10.1109/PowerAfrica.2019.8928637","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928637","url":null,"abstract":"This paper deals with a developed insulated gate bipolar transistor (IGBT) and diode based fault current limiter (FCL) for simple microgrid application. The developed FCL utilizes a three-phase circuit arrangement that has fault current limiting ability with an uncomplicated control strategy that simply samples the voltage at the point of common coupling (PCC) for the FCL control using Clarke’s Transformation, low pass filtering and pulse generating circuit. The IGBT-Diode based FCL regulates the magnitude of the fault current and enhances the PCC voltage under transient faults to ensure continuous supply of active and reactive power to the local load of the microgrid irrespective of the transient condition of the main grid. The power electronic switching arrangement employed interfaces the grid using an isolating transformer whose primary is connected in series with the feeder line and the secondary is shorted by an optimally sized AC reactor. The IGBT-Diode switching operations for the pre-fault, fault and post-fault conditions are triggered by the control proposed which detects fault occurrence in less than a period. The analytical investigation of the IGBT-Diode switched FCL is presented in details and the results of simulation lay credence to effectiveness of the developed FCL in improving Fault Ride-Through (FRT).","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"2016 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":"127363151","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: 7

Modelling and Analysis of a Transfer Field Machine with Displaced Windings 带移位绕组的传递磁场电机的建模与分析

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928800

H. C. Idoko, L. Anih

引用次数: 0

Effects of Operating Factors on the Bio-Oil Produced from Pyrolysis of Plastic Wastes using Response Surface Methodology 响应面法研究操作因素对塑料废弃物热解产生物油的影响

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928780

T. Ayodele, O. Durodola, A. Ogunjuyigbe, Josiah Lange Munda

{"title":"Effects of Operating Factors on the Bio-Oil Produced from Pyrolysis of Plastic Wastes using Response Surface Methodology","authors":"T. Ayodele, O. Durodola, A. Ogunjuyigbe, Josiah Lange Munda","doi":"10.1109/PowerAfrica.2019.8928780","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928780","url":null,"abstract":"This paper presents the influence of four operating factors (plastic type i.e feedstock, temperature, heating rate and the reaction time) on the bio-oil yield obtainable from pyrolysis of plastics wastes. To achieve this, twenty-seven (27) different experiments conducted on the pyrolysis of various plastic types under different pyrolytic operating conditions were sourced from different literature and then modelled using response surface methodology (RSM). This is to facilitate the establishment of regression relationship between the operating factors and the probable bio-oil yield from plastic waste making it possible to determine the impact of the operating factors. Some of the key results show that the regression model derived from the RSM could effectively model and predict the bio oil yield using the four operating factors with the R–square and the adjusted R–square value of 92.2% and 83.2%, respectively. It is also revealed that the different interactions among the factors result into different bio-oil production, hence, the need for determining the best interaction among the influencing factors for maximum bio-oil production. It can be generally observed from the results that temperature and plastic type (feedstock) have very strong effect on pyrolysis process of bio-oil production. Too high or too low temperature as well as the type of plastic used as feedstock could cause a very high variation in the bio-oil yield. The effect of reaction time is seen to be minimal as it is nearly constant for all the investigated scenarios.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"4 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":"114491890","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 Tariff Value Chain: A Study of Three Customers of the Enugu Electricity Distribution Company 电价价值链:以鄂努古配电公司三个客户为例

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928651

J. Chukwuma, Dele Fayomi, N. Echoda, Olisa Chukwuma

引用次数: 0

Automated Negotiation for Peer-to-Peer Trading of Renewable Energy in Off-Grid Communities 离网社区可再生能源点对点交易的自动协商

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928640

Christie Etukudor, V. Robu, Benoit Couraud, Gudrun Kocher, W. Früh, D. Flynn, Chinonso Okereke

{"title":"Automated Negotiation for Peer-to-Peer Trading of Renewable Energy in Off-Grid Communities","authors":"Christie Etukudor, V. Robu, Benoit Couraud, Gudrun Kocher, W. Früh, D. Flynn, Chinonso Okereke","doi":"10.1109/PowerAfrica.2019.8928640","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928640","url":null,"abstract":"Electricity-access is a growing concern in developing countries of Sub-Saharan Africa where approximately 563million people (8% of the global population) lack electricity. Many use fossil-fuel generators and/or solar-home-systems (SHSs) with storage. Given the observed excess and unutilized electricity generated from these SHSs, a novel community peer-to-peer (P2P) electricity-market using automated negotiations is presented as a solution to improve access to electricity. Software agents representing World Bank Tiers 1 – 4 electricity-access households bilaterally negotiate electricity price and quantities applying five different negotiations heuristics. Simulation results show 65 – 100% trade of the excess generation; with Tiers 1 – 2 (low-income households) negotiating sufficient electricity (1 – 1.1kWh/day) at the least market-price of £0.35/kWh to move to Tier 3. Likewise, the Tier 3 household agent negotiated 1.5kWh/day sufficient to meet its needs. This novel electricitymarket model can help drive the United Nations goal of affordable, sustainable and modern energy for all by 2030.","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":"129896093","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: 7

Real-Time Speed Control of a PMSM for Wind Turbine Application 风力发电用永磁同步电机的实时速度控制

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928919

Zenachew Muluneh Hailemariam, R. Leidhold, G. T. Tesfamariam

引用次数: 6

Design and Development of a Variable-Duty Solar-Powered Fluid Pump for Rural and Industrial Adaptation 一种适应农村和工业的可变负荷太阳能流体泵的设计与开发

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928871

F. Fameso, E. C. Egbulefu, J. Audu, O. Imoru

引用次数: 0

The Developed Analytical Model Used to Evaluate the Dynamic Behaviour of Power Line Conductors 电力线导体动态特性分析模型的建立

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928832

E. Ojo

{"title":"The Developed Analytical Model Used to Evaluate the Dynamic Behaviour of Power Line Conductors","authors":"E. Ojo","doi":"10.1109/PowerAfrica.2019.8928832","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928832","url":null,"abstract":"The dynamic behaviour of Transmission line conductors is a subject of interest to power line designer. This phenomenon occurs as a result of the aerodynamic effects of vortex shedding that induces a transverse displacement. The behaviour of conductors when subjected to dynamic forces is not completely understood and this has necessitated the need for continuous investigations by researchers. Hence, various analytical, numerical and experimental models have evolved over the years to try and predict the concept of wind-induced vibration on power line conductors. This paper presents the developed analytical model that describes the dynamic response of conductors to the dynamic forces such a wind loading. The model presented, modelled the conductor as a continuous distributed parameters of a beam and this was used to evaluate the dynamic response of conductors. The conductor responses were obtained from the developed transfer function, implemented in a sweep manner to capture the resonance frequencies. A replica scenario of the sweep tests were conducted in the laboratory with the same loading conditions. To validate the model, the test results were compared with the developed analytical model. The comparison showed some degree of agreement.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"86 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":"114760516","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

Post Commission Grid Impact Assessment of a 20 MWp Solar PV Grid Connected System on the ECG 33 kV Network in Winneba Winneba市20mwp太阳能光伏并网系统在33kv电网上的并网影响评估

2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928841

Ekow Appiah Kwofie, Godfred Mensah, Vincent Safo Antwi

{"title":"Post Commission Grid Impact Assessment of a 20 MWp Solar PV Grid Connected System on the ECG 33 kV Network in Winneba","authors":"Ekow Appiah Kwofie, Godfred Mensah, Vincent Safo Antwi","doi":"10.1109/PowerAfrica.2019.8928841","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928841","url":null,"abstract":"This paper summarizes the results of a post grid impact assessment of a Distributed Generated 20 MWp Solar PV plant on a 33-kV interconnection bus of a 161/33 kV substation within the Electricity Company of Ghana’s Limited distribution network located in the Gomoa Onyadze community in the Central Region of Ghana. The PV plant was commissioned since 2015. The paper assesses the impact of the PV plant in the following areas: The Demand Profile; Power Factor at the Point of Common Coupling (PCC); The Voltage Total Harmonic Distortion at the PCC; The Current Total Harmonic Distortion at the PCC; and the Voltage Profile at the PCC. The load profile was significantly distorted due to the active generation of the solar PV Plant. It now assumes a duck shape. The power factor at the 33 kV PCC bus deteriorated within the periods of active solar PV generation from 7:00 hours to 19:00 hours and went as low as 0.187 at noon time. The Voltage Total Harmonic Distortion (THD V) Levels at the 33 kV PCC bus where the solar PV Plant is interconnected, far exceeded the ECG allowable limits for THD V of 3%. The values were as high as 10%. The Current Total Harmonic Distortion (THD A) Levels at the 33 kV PCC bus of Transformer 1 far exceeded the limits of THD A of 5%. The values were as high as 65%. There was no significant impact on the voltage profile at the 33-kV bus where the solar PV plant was interconnected.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"56 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":"115959294","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