2022 IEEE PES/IAS PowerAfrica最新文献_第9页

Heuristic Control of Neutral DC Compensation Method to Moderate DC bias in Power Transformer 电力变压器中性点直流补偿法的启发式控制

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905399

Olanrewaju A. Lasabi, A. Swanson, Leigh Jarvis

引用次数: 0

Feasibility Study of Floating Solar PV System in Rwanda: Case Study Ntaruka Hydropower Reservoir 卢旺达浮动式太阳能光伏系统可行性研究——以恩塔鲁卡水电站为例

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905288

Annuarita Gatesi, Peter Musau Moses

{"title":"Feasibility Study of Floating Solar PV System in Rwanda: Case Study Ntaruka Hydropower Reservoir","authors":"Annuarita Gatesi, Peter Musau Moses","doi":"10.1109/PowerAfrica53997.2022.9905288","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905288","url":null,"abstract":"Floating Solar Photovoltaic (FSPV) systems, also known as floatovoltaics, are a rapidly increasing emerging technology sector in which solar Photovoltaic systems are installed directly on water bodies. When contrasted to its land-based counterpart, the FSPV system offers significant benefits such as increased panel efficiency, the elimination of land-related costs, and the saving of land for other purposes, as well as environmental benefits such as reservoir water conservation and algae boom containment. The purpose of this study was to look at the feasibility of installing a floating PV system at the Ntaruka hydropower reservoir in order to reduce water evaporation, improve PV cell efficiency, and liberate up land for other activities. Projections of load demand for the site were addressed in this paper based on electrical appliances and are expected to be 274.88 kWh/day, with a maximum demand of 131. SSkW. The floating PV system was designed so that it can satisfy the daily energy load demand of the community electric appliances on the site. The temperature and wind speed were major contributory factors to PV cell efficiency drops and low power output on the land.","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":"117212350","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

A Review on Phasor Measurement Units and their Applications in Active Distribution Networks 有功配电网相量测量装置及其应用综述

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905351

Obed Muhayimana, P. Toman

引用次数: 2

Development of Grid –Connected Renewable Generation Control Techniques 并网可再生能源发电控制技术的发展

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905338

Welcome Khulekani Ntuli, Gulshan Sharma, M. Kabeya

{"title":"Development of Grid –Connected Renewable Generation Control Techniques","authors":"Welcome Khulekani Ntuli, Gulshan Sharma, M. Kabeya","doi":"10.1109/PowerAfrica53997.2022.9905338","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905338","url":null,"abstract":"This article develops and presents a comparative analysis of two types of wind energy conversion system (WECS), which are the doubly fed induction generator (DFIG)-based WECS incorporating a voltage source converter (VSC) with a proportional-integral (PI) controller and the DFIG based WECS incorporating a VSC with a Proportional Integral Derivative (PID) controller. The parameters for comparison include: the steady-state error, the percentage overshoot and undershoot, the damping oscillations and the settling time of the voltage/current or power output signals and dc-link voltage signal. The VSC is selected as compared to the line commutated converters (LCCs) because of the commutation that is not dependent on voltage and current AC signals. The grid-side converter is applied to regulate dc-link voltage and reactive power to their reference values. Furthermore, the rotor side converter provides rotor speed regulation on the DFIG to maintain the active power output. The vector control strategy is utilized to achieve sufficient control of the system. The control system is modelled using MATLAB/SIMULINK. From the simulation results, it is found that the DFIG based WECs incorporating a PID controller performed efficiently compared to DFIG based WECs incorporating a PI controller.","PeriodicalId":371237,"journal":{"name":"2022 IEEE PES/IAS PowerAfrica","volume":"39 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":"123946527","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

Assessment of the Energy Efficiency Programmes within the Internal Operations of Nairobi City County Government, a case study of CBD Region. 内罗毕市县政府内部运作的能源效率方案评估，以CBD区域为例。

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905298

Audrey Adhiambo Obwanda, Peter Musau Moses, A. Nyete

{"title":"Assessment of the Energy Efficiency Programmes within the Internal Operations of Nairobi City County Government, a case study of CBD Region.","authors":"Audrey Adhiambo Obwanda, Peter Musau Moses, A. Nyete","doi":"10.1109/PowerAfrica53997.2022.9905298","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905298","url":null,"abstract":"Energy Efficiency (EE) is an emerging concept in the management of public institutions. The main objective of the study was to assess the Energy Efficiency Programmes (EEPs) of the Nairobi City County Government (NCCG) within its internal operations. It did this by conducting an energy audit, identifying & determining success rates of the EEPs and developing a sustainable implementation model for these programmes. A case study was analyzed for electrical energy consumption of Nairobi Central Business District with a focus on the sub sectors of street lighting, building facilities and traffic lighting. The results of this study indicated that there have been EEPs instituted by NCCG and these measures have led to a 32% reduction in energy consumption in city hall complex between the years 2016 and 2021 with the EEPs including replacement of fluorescent luminaires with LEDs, behavior change among others. For the street lighting, 184 lamps have been replaced with LED options translating to 4% conversion rate with some not operational due to faults and vandalism. Finally traffic lighting has a 65% LED conversion rate with incandescent lamps being 14,833 in 2016 and down to 9,754 in 2021. The economic analysis shows that the EEPs implemented are able to derive economic value to the NCCG within a medium term plan. Various Barriers to implementation has also been highlighted and how to mitigate them. The business model developed allows departments to follow a standardized process in setting energy targets, implementing energy efficiency measures and tracking financial, environmental and energy savings.","PeriodicalId":371237,"journal":{"name":"2022 IEEE PES/IAS PowerAfrica","volume":"52 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":"125243085","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

Towards Asymmetrical Modeling of Voltage Stability in the Presence of GICs GICs存在时电压稳定性的不对称建模研究

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905396

H. Chisepo, C. Gaunt

引用次数: 2

A Load Flow Analysis of the Southern African Power Pool Interconnections using High Voltage AC, High Voltage DC, and Flexible AC Transmission System 使用高压交流、高压直流和柔性交流输电系统的南部非洲电力池互连的负荷流分析

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905074

N. W. Ndlela, I. Davidson

引用次数: 1

An Expository Comparison of Electric Vehicles and Internal Combustion Engine Vehicles in Africa - Motivations, Challenges and Adoption Strategies 电动汽车和内燃机汽车在非洲的说明性比较-动机，挑战和采用策略

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905241

O. M. Longe

引用次数: 1

Design of Hybrid Active Power Filters (HAPFs) for Grid-Connected Photovoltaic Systems Using Modified p-q theory 基于改进p-q理论的并网光伏系统混合有源滤波器设计

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905402

Manishimwe Benedicte, Peter Musau Moses

引用次数: 0

Improved Voltage Control in LV Grid-Connected PV System Using Active Power Curtailment with Battery Energy Storage System 采用有功弃电+蓄电池储能系统改进低压并网光伏系统电压控制

2022 IEEE PES/IAS PowerAfrica Pub Date : 2022-08-22 DOI: 10.1109/PowerAfrica53997.2022.9905329

Famous Ghanyo Tay, Michael Tudzi, John Wobil, F. Effah

{"title":"Improved Voltage Control in LV Grid-Connected PV System Using Active Power Curtailment with Battery Energy Storage System","authors":"Famous Ghanyo Tay, Michael Tudzi, John Wobil, F. Effah","doi":"10.1109/PowerAfrica53997.2022.9905329","DOIUrl":"https://doi.org/10.1109/PowerAfrica53997.2022.9905329","url":null,"abstract":"The overvoltage condition that occurs as a result of reverse power flow and the intermittency of renewable energy resources is one of the major limitations to the integration of photovoltaic (PV) generation in a traditional grid. Research shows that this overvoltage problem associated with the integration of PV generators necessitates the construction of another grid network. An alternative to constructing a new distribution system, as a result of increasing power demand is the integration of voltage controllers to keep the voltage within the statutory limit. Power World Simulator was used to model and examine the influence of PV generators on the voltage profile in a low voltage (LV) distribution system as a case study. The influence of PV location on a network has been analyzed as well. This paper details the proposed voltage control scheme, which is based on Droop-based Active Power Curtailment (APC) with Battery Energy Storage System (BESS). This was modeled and simulated in MATLAB/Simulink. The results show that incorporating this voltage controller into an LV network can increase the network hosting capacity whiles keeping the PCC voltage within the statutory limits.","PeriodicalId":371237,"journal":{"name":"2022 IEEE PES/IAS PowerAfrica","volume":"27 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":"114735236","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