2022 IEEE PES/IAS PowerAfrica最新文献_第2页

Opportunities and Challenges for eCooking on Mini-grids in Malawi: Case Study Insight 马拉维微型电网生态烹饪的机遇与挑战:案例研究

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905404

A. Eales, D. Frame, Shafiqa Keddar, Annika Richter, Daniel Kloser, S. Galloway

{"title":"Opportunities and Challenges for eCooking on Mini-grids in Malawi: Case Study Insight","authors":"A. Eales, D. Frame, Shafiqa Keddar, Annika Richter, Daniel Kloser, S. Galloway","doi":"10.1109/PowerAfrica53997.2022.9905404","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905404","url":null,"abstract":"Mini-grids are the least cost electrification option for over 30% of Malawi’s population, however mini-grid financial sustainability is often compromised due to underutilised generation. Electric cooking is increasing in prominence globally and offers a low carbon alternative to biomass. Powering eCook devices on mini-grids in Malawi has the potential to improve mini-grid profitability while offering environmental and social benefits. This study explores this opportunity drawing on pilot case study data from mini-grid powered eCook devices gathered through smart meters and social impact surveys. Technical analysis presents statistical load profiles compared to modelled profiles, indicating lower eCook demand from measured profiles and likelihood of fuel stacking. Analysis is utilised to investigate opportunities and challenges for mini-grid eCooking in Malawi through technical and economic lenses, including potential impact of carbon credits on financial models. Recommendations given to accelerate mini-grid eCooking in Malawi include demand side management, smart cooking subsidies, and further data analysis.","PeriodicalId":371237,"journal":{"name":"2022 IEEE PES/IAS PowerAfrica","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115568877","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

Providing renewable energy to rural areas: intervention in nine colleges in Uganda 向农村地区提供可再生能源:对乌干达九所大学的干预

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905380

G. Limpens, Josephine Nalubega, Frank Waibale

引用次数: 0

Enhancement of Solar PV Output Error Under Variable Irradiation and Temperature Using an Improved Regulation Strategy 利用改进的调节策略增强变辐射和变温度下的太阳能光伏输出误差

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905238

A. S. Akinyemi, M. Kabeya, I. Davidson

引用次数: 0

Network Analysis of the Federal Capital Territory Distribution System of Nigeria for Future Integration of Distributed Energy System 面向未来分布式能源系统整合的尼日利亚联邦首都地区配电系统网络分析

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905382

B. Saka, J. Tsado, V. Kiray, S. Hussein

{"title":"Network Analysis of the Federal Capital Territory Distribution System of Nigeria for Future Integration of Distributed Energy System","authors":"B. Saka, J. Tsado, V. Kiray, S. Hussein","doi":"10.1109/PowerAfrica53997.2022.9905382","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905382","url":null,"abstract":"The present electricity supply to the Nigerian capital city is short of expectation, hence, it is affecting the social, economic, and security of the territory. This paper presents a network analysis of the Federal Capital Territory distribution network of Nigeria. The analysis was conducted for four scenarios using the DIgSILENT software. The analysis considered power supply to the distribution network from two-generation sources. From the results obtained, the best voltage profile was obtained when the distribution network was supplied from two-generation sources. A network loss of 2S.35MW was obtained for the scenario with two generation sources while 35. S3 MW and 2S.97 MW were obtained when the power supply was from one of the two sources each. In terms of the frequency, the system was stable when the generation was from two sources while for single generation sources, the system was unstable. The network analysis provides a basis for identifying ways of improving the reliability of power supply to the distribution network and for future integration of distributed energy systems.","PeriodicalId":371237,"journal":{"name":"2022 IEEE PES/IAS PowerAfrica","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124782146","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

Comparison of HVAC and HVDC collection grids in offshore windfarms 海上风电场HVAC和HVDC集输电网的比较

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905372

Caleb Jordache Pillay, K. Musasa

引用次数: 1

Power loss minimization and voltage profile improvement by distributed generation(DG) sizing and placement 通过分布式发电(DG)的尺寸和布局来实现功率损耗最小化和电压分布改善

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905254

M. Ntombela, K. Musasa, M. Leoaneka

{"title":"Power loss minimization and voltage profile improvement by distributed generation(DG) sizing and placement","authors":"M. Ntombela, K. Musasa, M. Leoaneka","doi":"10.1109/PowerAfrica53997.2022.9905254","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905254","url":null,"abstract":"In order to reduce power losses in a power system and to improve voltage profile, researchers have examined and studied optimizing Photovoltaic Power distributed generation (DG) which is location and size in a power system, but the results have some drawbacks. Several approaches developed to make this important issue more efficient, including coming up with new algorithms and improving those already in existence. Many of the proposed algorithms are only concerned with the real power loss, however. Voltage stability control is a critical factor in modern power systems, which makes incorporating reactive power losses in optimizing DG allocation for voltage profile improvement necessary. The goal of this work is to solve this issue by combining Genetic Algorithm and Improved Particle Swarm optimization to optimize DG size and location by considering both real and reactive power losses. Power loss sensitivity factors and real and reactive power flow factors used in identifying which buses will receive DGs. A MATLAB-based program was developed and tested on a test system using distributed generators, considering the proposed method. As compared to Genetic Algorithm, Particle Swarm optimization and Improved Particle Swarm optimization methods, the Hybrid Genetic Algorithm Improved Particle Swarm optimization method is better for reducing both real and reactive power losses.","PeriodicalId":371237,"journal":{"name":"2022 IEEE PES/IAS PowerAfrica","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123151340","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

Flexibility Assessment of a Solar PV Penetrated IEEE 9-Bus System Using Dynamic Transient Stability Evaluation 基于动态暂态稳定评价的太阳能光伏穿透IEEE 9总线系统柔性评估

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905395

Kabulo Loji, Nomhle Loji, M. Kabeya

引用次数: 1

Dynamic Demand Control for Grid Frequency Stabilization 电网稳频的动态需求控制

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905361

E. Mudaheranwa, Hassan Berkem Sonder, Ye-Obong N. Udoakah, L. Cipcigan, C. E. Ugalde-Loo

{"title":"Dynamic Demand Control for Grid Frequency Stabilization","authors":"E. Mudaheranwa, Hassan Berkem Sonder, Ye-Obong N. Udoakah, L. Cipcigan, C. E. Ugalde-Loo","doi":"10.1109/PowerAfrica53997.2022.9905361","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905361","url":null,"abstract":"This paper presents a method for stabilizing grid frequency by considering demand flexibility before allowing demand response. To this end, the flexibility of consumers under a price incentive signal delivered by an aggregator to the energy management system (EMS) is estimated. The goal is to represent the optimization process of the EMS from the perspective of the aggregator, implement the price incentive signal, and eventually produce changes in the load pattern that will contribute to the dynamic frequency control. With the help of the aggregator, prosumers can receive price incentive signals based on their energy consumption and prepare them for their participation in grid frequency stabilization. By considering the operation of a wide range of renewable energy sources and a load management system, the study investigates the reduction of the total reliance on electricity from the grid in day-ahead and real-time energy markets while also balancing an anticipated load. The control framework presented in this paper considers the estimated power availability and uses it in conjunction with the participation of a load aggregator to control the load frequency.","PeriodicalId":371237,"journal":{"name":"2022 IEEE PES/IAS PowerAfrica","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126017796","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

Design and Analysis of a Proposed Multistage Capacitor Bank Compensation Scheme 拟议多级电容器组补偿方案的设计与分析

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905307

Phinias Kgori, D. Okojie, U. B. Akuru

{"title":"Design and Analysis of a Proposed Multistage Capacitor Bank Compensation Scheme","authors":"Phinias Kgori, D. Okojie, U. B. Akuru","doi":"10.1109/PowerAfrica53997.2022.9905307","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905307","url":null,"abstract":"Electricity power compensation has become an essential part of the modern power system and plays an important role in the economy of any country. Mines around the world consume large quantity of power which translate to higher electricity bills. Most of the loads in the mines are motors and furnaces which consume huge amount of reactive power leading to possible penalties from the utility. As a result, the power factor can be as low as 0.4 p.u. as against standard values of close to 1 p.u. Thus, the power system experiences high harmonics which can be harmful to the insulation of electrical equipment like transformers. To address these issues, the need for compensating the network to minimise cost and improve the efficiency of the system cannot be overemphasized. Typical solutions include compensation devices like capacitor bank, synchronous condensers, static VAr compensators or STATCOM. This study is an investigation on the effectiveness of using multistage capacitor bank for power system compensation without compromising the existing equipment as is the case with existing typical solutions. The proposed multistage capacitor bank provides dynamic power factor regulation for frequent load changes that is common with electricity consumers in the mining industry. A practical validation design and system modelling of the proposed multistage capacitor bank compensation scheme presents it as an overarching improved solution for effective and cost-efficient reactive power load compensation.","PeriodicalId":371237,"journal":{"name":"2022 IEEE PES/IAS PowerAfrica","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131357612","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

Testing and Evaluation of Standards for Performance and Safety of Induction Motors 感应电动机性能和安全标准的试验与评价

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905333

Nkosinathi S. Khumalo, N.P. Memane, U. B. Akuru

{"title":"Testing and Evaluation of Standards for Performance and Safety of Induction Motors","authors":"Nkosinathi S. Khumalo, N.P. Memane, U. B. Akuru","doi":"10.1109/PowerAfrica53997.2022.9905333","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905333","url":null,"abstract":"The nameplate of induction motor enables installers, operators, and maintenance personnel to understand and recognize the type of motor and its requirements quickly and easily. The nameplate specifies the basic mechanical design, electrical performance, and dimensional parameters of the motor. In this study, the aim is to test and evaluate single - and three-phase induction motors to see if the information on their nameplate is correct by comparing test results and nameplate information. Induction motors from the same manufacturer were tested in 2019 and 2020. The paper demonstrates the performance of the tested induction motors. The motors’ defects are highlighted through experiments carried out at the Explosion Prevention Technology and Rotating Machines (EPT&RM) laboratory of SABS (South African Bureau of Standards), which is accredited by SANAS (South African National Accreditation System). The tests and evaluations were carried out in accordance with both the South African National Standard (SANS 1804) and International Standards (IEC 60034 series) of which a high percentage (41%) noncompliance rate of the three-phase motor variants has been reported.","PeriodicalId":371237,"journal":{"name":"2022 IEEE PES/IAS PowerAfrica","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124826662","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