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Benefits and Challenges of Energy Storage Technologies in High Penetration Renewable Energy Power Systems 储能技术在高渗透可再生能源发电系统中的优势与挑战
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928644
S. O. Showers, A. Raji
{"title":"Benefits and Challenges of Energy Storage Technologies in High Penetration Renewable Energy Power Systems","authors":"S. O. Showers, A. Raji","doi":"10.1109/PowerAfrica.2019.8928644","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928644","url":null,"abstract":"Due to the intermittent power output of renewable energy sources, energy storage has become unavoidable and necessary in grid connected renewable energy systems. This is applicable in grid connected renewable energy integration, transmission, distribution, micro-grid and ancillary services like voltage regulation, frequency regulation and spinning reserves. In this paper, different energy storage systems are studied and presented, with regards to technology advancement, individual benefits, challenges, and applications, considering their influence on the total power system network. Consideration is given to generation, transmission, distribution and applicability. Different energy storage system (ESS) technologies are reviewed and explored together with benefits of ancillary services on energy storage system on grid connected renewable energy sources. The challenges of high penetration level of renewable energy sources on energy storage application in power systems are investigated considering the technical and economic benefits together with challenges. However, the advancement and growth of potential energy storage system is estimated and investigated accordingly.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"7 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":"114618843","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: 18
Power Quality Disturbances Analysis using Two Forms of Wigner-Ville Distribution 基于两种维格纳-维尔分布的电能质量扰动分析
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928911
A. A. Ahmad, Abel Ehimen Airoboman, A. Abdulaziz, Habibu Hussaini
{"title":"Power Quality Disturbances Analysis using Two Forms of Wigner-Ville Distribution","authors":"A. A. Ahmad, Abel Ehimen Airoboman, A. Abdulaziz, Habibu Hussaini","doi":"10.1109/PowerAfrica.2019.8928911","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928911","url":null,"abstract":"Power quality (PQ) is a major concern to both power utilities and consumers due to the widespread use of sensitive loads, power electronic devices and industrial equipments. This paper presents an analysis of PQ disturbances as a first step of their appropriate identification using time-frequency analysis. The research focused on the two most common forms of PQ disturbances in Nigeria: voltage sag and swell. The disturbance analysis was based on two basic forms of Wigner-Ville distribution (WVD); the windowed WVD and the filtered WVD used in conjunction with Hilbert transform. Results obtained showed that both forms of WVD are able to accurately capture the disturbances with concentration of energy along the main power supply frequency of 50Hz within the PQ disturbance duration of 0.1s. The proposed methodology showed that the WVDs would be a good signal processing method for subsequent classification of PQ disturbances in electrical power smart grid.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"40 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":"128439713","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 Dynamics of Capacitive Compensated Grid Connected Squirrel Cage Induction Generators 电容补偿并网鼠笼式感应发电机的动力学研究
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928870
M. Bule, O. Ojo, J. Haruna
{"title":"The Dynamics of Capacitive Compensated Grid Connected Squirrel Cage Induction Generators","authors":"M. Bule, O. Ojo, J. Haruna","doi":"10.1109/PowerAfrica.2019.8928870","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928870","url":null,"abstract":"A wind energy system connected to a series compensated line is studied. The series compensation enhances the power transfer capability but could lead to various forms of oscillations and probable instabilities. Computer simulation is used to show the dynamics of the system and establishes a safe operating region for the studied system. The qd per unit dynamic model of the system is developed while the turbine – generator sub – system is modeled also in per unit using the two mass mechanical model. Simulation studies and steady state analysis of the system are performed including the small signal eigenvalue analysis. It is shown that at high negative slip, the electromagnetic torque and hence the available power increases with increasing level of compensation. However, as the slip decreases to zero, the electromagnetic torque converges to a common value irrespective of the compensation level. For stable operation, increasing compensation level, required an increasing slip.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"65 12 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":"131003251","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
Single Wire Earth Return Distribution Grids: A Panacea for Rapid Rural Power Penetration in Africa via Regulatory Policy Transfer 单线回地配电网:通过监管政策转移实现非洲农村电力快速渗透的灵丹妙药
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928822
B. Nkom, C. Baguley, N. Nair
{"title":"Single Wire Earth Return Distribution Grids: A Panacea for Rapid Rural Power Penetration in Africa via Regulatory Policy Transfer","authors":"B. Nkom, C. Baguley, N. Nair","doi":"10.1109/PowerAfrica.2019.8928822","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928822","url":null,"abstract":"The Single Wire Earth Return (SWER) system was developed in the 1920s to provide a low-cost means of electricity distribution to sparsely populated rural communities. Since then, it has been in prominent service on all continents except Africa. Its use in Africa has been mostly in the southern and northern parts of the continent, with its virtual non-existence in West and East Africa. This paper highlights a few key research and development strategies to improve the technology, one of which is currently at Technology Readiness Level 5. It also provides a cost comparison of SWER with the regular 3-wire distribution system, by carrying out a fiscal study of the Tuhua SWER grid. The comparison shows that the SWER system is long overdue for large-scale use in Africa, which can be accelerated through the adoption of regulatory policies and best practices developed by countries that are historic users of the technology.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"751 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":"122990893","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
A Review of Off-Grid Plug-and-Play Solar Power Systems: Toward a New "I Better Pass My Neighbour" Generator 离网即插即用太阳能发电系统综述:走向一种新的“我最好超过我的邻居”发电机
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928727
K. Aganah, J. Chukwuma, M. Ndoye
{"title":"A Review of Off-Grid Plug-and-Play Solar Power Systems: Toward a New \"I Better Pass My Neighbour\" Generator","authors":"K. Aganah, J. Chukwuma, M. Ndoye","doi":"10.1109/PowerAfrica.2019.8928727","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928727","url":null,"abstract":"Power consumption in many countries continues to outpace the power generation capabilities of the main grid. To circumvent this challenge, individual households or even entire communities are going off-grid. The most ubiquitous alternative energy sources are from wind- and solar-generated power. From the consumers point of view, the biggest challenge to taking advantages of these resources is usually with the installation of the off-grid system, thus necessitating a plug-and-play architecture. Furthermore, the ability to seamlessly transition to an off-grid generator when the main power grid goes down remains a critical technical challenge. In this paper, we review existing architectures for off-grid plug-and-play power generators. We also present specifications and system architectures for off-grid plug-and-play solar-powered generators that would be well-suited to African countries.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"11 6 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":"116930390","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
Assessment and Analysis of Typical Eskom Secondary Distribution Network under Normal Steady State 典型Eskom二次配电网正常稳态下的评价与分析
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928826
O. Taiwo, I. Davidson
{"title":"Assessment and Analysis of Typical Eskom Secondary Distribution Network under Normal Steady State","authors":"O. Taiwo, I. Davidson","doi":"10.1109/PowerAfrica.2019.8928826","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928826","url":null,"abstract":"To enable secondary distribution network to perform optimally, it is critical to assess the performance of the system. Optimum performance means acceptable voltage profile, increase reliability of supply, no overloading of cables and distribution transformers, absence of imbalances in both voltage and current phases and acceptable loss. This work evaluates the performance of secondary distribution network as a result of voltage losses, voltage deviation, voltage variation and voltage imbalance using MATLAB software. This paper presents a performance analysis of a typical Eskom secondary 11/0.4 kV, unbalanced secondary distribution system. The network was modeled with standard network parameters for secondary Eskom distribution network using MATLAB/Simulink Sim Power System tool box. The summary of the paper gives recommendations on effectual techniques for improving the voltage profile and reducing the voltage imbalance and voltage drop to an allowable standard.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"71 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":"124426134","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
Technico-economic optimization of Distributed Generation (DG) and Static Var Compensator (SVC) positioning in a real radial distribution network using the NSGA-II genetic algorithm 基于NSGA-II遗传算法的实际径向配电网分布式发电(DG)和静态无功补偿器(SVC)定位的技术经济优化
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928631
Oloulade Arouna, Moukengue Imano Adolphe, Adekambi O. Robert, Amoussou Zinsou Kenneth, Vianou Antoine, Badarou Ramanou, Tamadaho Herman, Dangbedji Celestin
{"title":"Technico-economic optimization of Distributed Generation (DG) and Static Var Compensator (SVC) positioning in a real radial distribution network using the NSGA-II genetic algorithm","authors":"Oloulade Arouna, Moukengue Imano Adolphe, Adekambi O. Robert, Amoussou Zinsou Kenneth, Vianou Antoine, Badarou Ramanou, Tamadaho Herman, Dangbedji Celestin","doi":"10.1109/PowerAfrica.2019.8928631","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928631","url":null,"abstract":"Network manager overuse their energy system considering the competition linked to energy sectors economic organization. That induces excessive losses and consequently the degradation of the quality of the power supply. This work consists of optimizing a distribution network of SBEE through the optimal positioning of distributed generator (PV) and SVC in a 138 node HTA departure. Optimization criteria such as losses, installation costs and voltage deviation have been considered and integrated in the NSGA-II algorithm. The algorithms have led to an optimal positioning of a PV system with 1.03MW of power at node 69 and two SVCs of respective powers of 2.07 MVar at node 58 and 2.05 MVar at node 82 of the network. The optimal cost obtained from the simulation is 2,729,000(USD). The NSGA-II algorithm is then a very robust optimization tool, efficient and can be used to optimize electrical grid.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"46 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":"134207690","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: 6
Real-Time Power Control of a Permanent Magnet Synchronous Generator Based Wind Turbine Through a Laboratory Test-Rig 基于实验室试验台的永磁同步风力发电机组实时功率控制
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928659
Zenachew Muluneh Hailemariam, R. Leidhold, G. T. Tesfamariam
{"title":"Real-Time Power Control of a Permanent Magnet Synchronous Generator Based Wind Turbine Through a Laboratory Test-Rig","authors":"Zenachew Muluneh Hailemariam, R. Leidhold, G. T. Tesfamariam","doi":"10.1109/PowerAfrica.2019.8928659","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928659","url":null,"abstract":"In this work, a discrete Real-time laboratory test rig is used to control the power or torque of a permanent magnet synchronous generator (PMSG) based Wind Turbine Generator (WTG) to analyze its behavior in a variable speed operation. A Variable Frequency Drive (VFD) controlled Induction Motor (IM) is used as a wind turbine emulator to drive 5kVA PMSG. Moreover, an inverter is directly connected to the stator winding to facilitate the power control of the WTG in real-time under various scenarios. For implementing PI controllers to control the power of the WTG in real-time, Texas instrument TMS320F28069 Digital Signal Processor (DSP) discrete real-time microcontroller control card in a GUASCH board is used. In addition, the simulation model of the system is prepared in MATLAB Simulink to be validated by the results of the test rig. Finally, the achieved results of the simulation and test rig indicate the real-time power control results of the system validates the MATLAB simulation model results of the system.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"16 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":"121536891","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
High PV Penetration Impact on an Unbalanced Distribution Network 高光伏渗透率对配电网不平衡的影响
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928932
Abayomi Adebiyi, Ian Lazaru, A. Saha, Evans Eshiemogie Ojo
{"title":"High PV Penetration Impact on an Unbalanced Distribution Network","authors":"Abayomi Adebiyi, Ian Lazaru, A. Saha, Evans Eshiemogie Ojo","doi":"10.1109/PowerAfrica.2019.8928932","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928932","url":null,"abstract":"With the rapid development of power system and the attendant technological innovative progressions, the objective of accomplishing energy for all is never again a vision but a predictable reality. Therefore, the current grids are facing infrastructural alterations to accomplish the qualities of a smart grid. The structural and performance characteristics of the conventional power generation system is changing with the integration of renewable energy systems (RES) such as photovoltaic (PV) system. This study presents an overview prospect of RES integration in South Africa and evaluated the impact of the increased PV penetration on steady state performance of an IEEE 13 bus test system. Rooftop PVs are incorporated into a portion of a conventional generation source in MATLAB/Simulink environment in which the steady state voltages are examined at different levels of PV penetration. The simulation results clearly revealed the impact of the increased PV penetration on stable state stability.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"22 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":"126607982","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
Stability study of the interconnection of electricity networks of WAPP countries - case of control zone II (Ghana, Togo & Benin) WAPP国家电网互联稳定性研究——以控制区II(加纳、多哥和贝宁)为例
2019 IEEE PES/IAS PowerAfrica Pub Date : 2019-08-01 DOI: 10.1109/PowerAfrica.2019.8928660
M. Medewou, P. Chetangny, S. Houndedako, A. Vianou, D. Chamagne, G. Barbier
{"title":"Stability study of the interconnection of electricity networks of WAPP countries - case of control zone II (Ghana, Togo & Benin)","authors":"M. Medewou, P. Chetangny, S. Houndedako, A. Vianou, D. Chamagne, G. Barbier","doi":"10.1109/PowerAfrica.2019.8928660","DOIUrl":"https://doi.org/10.1109/PowerAfrica.2019.8928660","url":null,"abstract":"In the context of the ECOWAS power transmission networks interconnection project led by WEST-AFRICAN POWER POOL (WAPP), a master plan was drawn up in 2004 and updated in 2011. This plan recommended the partitioning of the ECOWAS area into five (05) control zones to ensure effective control of the stability parameters of the interconnected network. This paper is a study of the functioning and stability of the power network of control Zone 2 composed of Benin, Togo and Ghana. After an inventory of the production and transmission infrastructures and the survey of the load curves of each country, the network of the control zone 2 is modeled with the CYME software version 8.1.6 and analyzed with the Newton-Raphson algorithm. With the voltage plans taken from steady state simulation and transient stability tests, technical solutions have been proposed and implemented to improve the zone 2 power network stability.","PeriodicalId":308661,"journal":{"name":"2019 IEEE PES/IAS PowerAfrica","volume":"24 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":"126628001","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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