发布求助
文献互助 智能选刊 最新文献

2019 54th International Universities Power Engineering Conference (UPEC)最新文献

筛选
英文 中文
Design of an intelligent MPPT based on ANN using a real photovoltaic system data 利用光伏系统实际数据，设计了一种基于人工神经网络的智能MPPT
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-11-07 DOI: 10.1109/UPEC.2019.8893638
Sadeq D. Al-Majidi, M. Abbod, H. Al-Raweshidy
{"title":"Design of an intelligent MPPT based on ANN using a real photovoltaic system data","authors":"Sadeq D. Al-Majidi, M. Abbod, H. Al-Raweshidy","doi":"10.1109/UPEC.2019.8893638","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893638","url":null,"abstract":"Maximum power point tracking (MPPT) methods are a fundamental part in photovoltaic (PV) system design for increasing the generated power of a PV array. Whilst several methods have been introduced, the artificial neural network (ANN) is an attractive method for MPPT due to its less oscillation and fast response. However, accurate training data is a big challenge to design an optimized ANN-MPPT technique. In this paper, an ANN-MPPT technique based on a large experimental training data is proposed to avoid the system from having a high training error. Those data are collected during one year from experimental tests of a PV system installed at Brunel University, London, United Kingdom. The irradiation and temperature of weather conditions are selected as the input, and the available power at MPP from the PV system as the output of the ANN model. To assess the performance, the Perturb and Observe (P&O) and the proposed ANN-MPPT methods are simulated using a MATLAB/Simulink model for the PV system. The results show that the proposed ANN method accurately tracks the optimal maximum power point and avoids the phenomenon of drift problem, whilst achieving a higher output power when compared with P&O-MPPT method.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"124 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87911009","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: 16
Trading Strategy for a Flexible Factory Participating in the German Balancing and Day-Ahead Market 柔性工厂参与德国平衡日前市场的交易策略
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-15 DOI: 10.1109/UPEC.2019.8893521
M. Böhringer, T. Plößer, J. Hanson, Tim Weitzel, C. Glock, N. Roloff
{"title":"Trading Strategy for a Flexible Factory Participating in the German Balancing and Day-Ahead Market","authors":"M. Böhringer, T. Plößer, J. Hanson, Tim Weitzel, C. Glock, N. Roloff","doi":"10.1109/UPEC.2019.8893521","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893521","url":null,"abstract":"During the last years, the rising share of renewable energy sources led to increased volatility in terms of power production within the electrical power grid. This leads to a higher amount of control reserve. The use of flexibility options within the industrial sector concerning the electrical power demand is one solution to provide control reserve. For this purpose, the structure of the decision-making process consisting of bid submission, market clearing and operation planning is represented from a demand-side view in this paper. A multi-stage stochastic mixed-integer linear programming model is developed that simultaneously optimizes the electrical demand of a flexible factory and bidding in the German secondary control reserve and day-ahead market. Since the bidding-decisions are made sequentially and the price information is gradually revealed, the optimization problem includes risk management. A case study based on the German electricity market demonstrates the effectiveness of the model.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"9 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75449353","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
Geomagnetically induced currents and space weather - A review of current and future research in Austria 地磁感应电流和空间天气——奥地利目前和未来研究综述
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-04 DOI: 10.1109/UPEC.2019.8893515
Dennis Albert, T. Halbedl, H. Renner, R. Bailey, G. Achleitner
{"title":"Geomagnetically induced currents and space weather - A review of current and future research in Austria","authors":"Dennis Albert, T. Halbedl, H. Renner, R. Bailey, G. Achleitner","doi":"10.1109/UPEC.2019.8893515","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893515","url":null,"abstract":"Conductive grounded electrical power transmission networks offer a low resistance path for currents induced in the ground. High latitude regions or those with low earth conductivity are especially affected by geomagnetically induced currents (GICs), which are caused by space weather events. Induced currents can cause damages of assets or system outages. Austria, as part of the European Alps with low conductive areas, tends to have a higher risk of induced currents in the electrical power transmission network, therefore, the effect of space weather in the power system has been investigated. Two independent models of GICs in Austria were set up and verified through comparison to ongoing transformer neutral point current measurements. Further research fields, such as space weather prediction, power transformers under dc bias and countermeasures for system operation are outlined.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"15 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74303709","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
Protection of Microgrids With High Amounts of Renewables: Challenges and Solutions 高可再生能源微电网的保护:挑战与解决方案
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-03 DOI: 10.1109/UPEC.2019.8893485
Di Liu, D. Tzelepis, A. Dyśko
{"title":"Protection of Microgrids With High Amounts of Renewables: Challenges and Solutions","authors":"Di Liu, D. Tzelepis, A. Dyśko","doi":"10.1109/UPEC.2019.8893485","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893485","url":null,"abstract":"Microgrid is a small-scale network including generators, loads and storage system, which provides a friendly way for the penetration of renewables and releases the burden of transmission system arising from the increased energy demand. Moreover, since microgrid can operate in islanded mode, it can provide backup power to local consumers when the main grid is disconnected. However, the utilization of microgrid causes serious problems in the area of power system protection. The main issues comprise varied fault levels in different operating modes and fault detection in islanded microgrid particularly when the microgrid is dominated by inverter based DGs (IIDGs). In addition, to avoid non-necessary power losses raised from multi-stage power conversion of DC loads and generators, DC microgrid becomes another attractive choice, which further increases the difficult on designing protection system for the futuristic microgrid. In this paper, a comprehensive review of the existing issues and protection methods for AC and DC microgrids is presented. Furthermore, to facilitate better understanding to readers, the benefits and limitations of each method are discussed in depth. Potential protection tools for future microgrid are suggested at the end of this paper.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"18 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81185996","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
Smart Grid Implementations for Achieving Increased Renewable Energy Proliferation in Small Island Developing States (SIDS) 在小岛屿发展中国家实现可再生能源扩散的智能电网实施
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-03 DOI: 10.1109/UPEC.2019.8893613
J. Kelly, G. Lacey, Anju Mekkayil, K. Jyothi, G. Pillai
{"title":"Smart Grid Implementations for Achieving Increased Renewable Energy Proliferation in Small Island Developing States (SIDS)","authors":"J. Kelly, G. Lacey, Anju Mekkayil, K. Jyothi, G. Pillai","doi":"10.1109/UPEC.2019.8893613","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893613","url":null,"abstract":"The replacement of fossil fuel energy systems with renewable energy technologies is necessary to meet low carbon targets. Replacing such power systems with sufficient renewable energy systems in islands often results in generation exceeding demand. A case study of Fair Isle is considered in this paper where until October 2018 the excess wind power was discarded through dump loads. The paper investigates the impacts of using electric vehicles (EVs) in the place of the dump loads to make better use of the excess power. HOMER was used to model the existing and the proposed systems and obtain power supply values. Power flow analyses on the proposed system were conducted using IPSA. The results indicate that up to 8 EVs can be subjected to scheduled charging at a time, between 23:00 and 07:00 when there is the highest wind penetration and lowest consumer power demand.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"122 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75487594","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
Zero-sequence current blocking device for two phase AC systems 两相交流系统零序电流阻断装置
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-03 DOI: 10.1109/UPEC.2019.8893601
Dennis Albert, S. Polster, R. Schürhuber, C. Obkircher, Georg Rader
{"title":"Zero-sequence current blocking device for two phase AC systems","authors":"Dennis Albert, S. Polster, R. Schürhuber, C. Obkircher, Georg Rader","doi":"10.1109/UPEC.2019.8893601","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893601","url":null,"abstract":"Resonantly grounded power systems require fault current limitation in order to meet current standards and to ensure personal safety. A current limiting transformer (CLT), based on an isolating transformer, is investigated here. The major advantages of CLT, compared to an isolating transformer, are power derating, reduction of uk value and thus reduced losses and reactive power demand during service. MATLAB/Simulink® is used to investigate the electrical behavior of CLT. Simulations of a phase-to-ground fault are made to proof the reduction of fault currents by CLT. Modelling CLT in symmetric components shows the blocking mechanism of the zero-sequence currents. In this context special attention has to be paid to resonant currents in resonantly grounded networks, when using CLT.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"49 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79921219","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 Construction of An Ozone Generator Based on A Resonant Converter 基于谐振变换器的臭氧发生器的设计与构造
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893494
P. Kitcharoen, Busayapol Phoaphan, P. Yutthagowith
{"title":"Design and Construction of An Ozone Generator Based on A Resonant Converter","authors":"P. Kitcharoen, Busayapol Phoaphan, P. Yutthagowith","doi":"10.1109/UPEC.2019.8893494","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893494","url":null,"abstract":"This paper presents design and construction of the ozone generator based on a resonant converter. Ozone is caused by the combination of 3 oxygen atoms. Ozone gas is widely used in the industry for killing bacteria, viruses, and protozoa. The ozone gas doesn’t cause residual pollution. The ozone gas can be produced from corona discharge on the area with high electrical field stress. In this paper, the resonant converter was developed for high voltage generation on coaxial cylindrical electrodes which are utilized to produces ozone gas. The resonant converter divided into 2 parts. The first part is the control circuit and the second part is the power circuit. The power circuit was used to convert AC voltage to AC voltage with other frequencies. Additionally, the converter can generate a square voltage with adjustable frequency for finding the resonant frequency. From the experiment, the resonant converter can produce ozone gas effectively.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"31 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73902889","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
The Effects of Short Circuits at Medium Voltage Transformers 中压变压器短路的影响
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/upec.2019.8893574
Alexandru Hotea, Radu Adrian TIRNOVAN, L. Neamt
{"title":"The Effects of Short Circuits at Medium Voltage Transformers","authors":"Alexandru Hotea, Radu Adrian TIRNOVAN, L. Neamt","doi":"10.1109/upec.2019.8893574","DOIUrl":"https://doi.org/10.1109/upec.2019.8893574","url":null,"abstract":"The paper deals with the study of a defect in the 20 kV network at the power substation. In some cases this could lead to dangerous transient phenomena, associated with overvoltages and current circulations. In this paper such a scenario is discussed showing not only the causes and effects, but also some recommendation to avoid possible damages, based on oscillograms recorded by digital protective relays.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"147 1","pages":"1-3"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74541676","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
Cybersecurity concerns on real time monitoring in electrical transmission and distribution systems (SMART GRIDS) 输配电系统实时监控的网络安全问题(智能电网)
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/UPEC.2019.8893621
Drd. Irene Ionita
{"title":"Cybersecurity concerns on real time monitoring in electrical transmission and distribution systems (SMART GRIDS)","authors":"Drd. Irene Ionita","doi":"10.1109/UPEC.2019.8893621","DOIUrl":"https://doi.org/10.1109/UPEC.2019.8893621","url":null,"abstract":"The virtual world does not observe national borders, has no uniform legal system, and does not have a common perception of security and privacy issues. It is however, relatively homogenous in terms of technology.A cyberattack on an energy delivery system can have significant impacts on the availability of a system to perform critical functions as well as the integrity of the system and the confidentiality of sensitive information.","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"30 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74214208","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
UPEC 2019 Distinguished Lecturer UPEC 2019杰出讲师
2019 54th International Universities Power Engineering Conference (UPEC) Pub Date : 2019-09-01 DOI: 10.1109/upec.2019.8893479
{"title":"UPEC 2019 Distinguished Lecturer","authors":"","doi":"10.1109/upec.2019.8893479","DOIUrl":"https://doi.org/10.1109/upec.2019.8893479","url":null,"abstract":"","PeriodicalId":6670,"journal":{"name":"2019 54th International Universities Power Engineering Conference (UPEC)","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78254852","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信