发布求助
文献互助 智能选刊 最新文献

2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)最新文献

筛选
英文 中文
Efficiency Improvement of Step-Up Series Resonant DC-DC Converter in Buck Operating Mode 降压工作模式下升压串联谐振DC-DC变换器效率的提高
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316574
V. Sidorov, A. Chub, D. Vinnikov
{"title":"Efficiency Improvement of Step-Up Series Resonant DC-DC Converter in Buck Operating Mode","authors":"V. Sidorov, A. Chub, D. Vinnikov","doi":"10.1109/RTUCON51174.2020.9316574","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316574","url":null,"abstract":"The paper focuses on the galvanically isolated series-resonant dc-dc converter (SRC) operating at low values of the quality factor of the resonant tank. The SRC topology is considered as a step-up front-end dc-dc converter with buck-boost functionality for integration of renewable energy sources in dc microgrids. The input voltage range could be expanded significantly by implementing different buck control methods at the constant switching frequency. Moreover, an additional control degree of freedom allowing optimization of the converter operation is topology reconfiguration between the full-bridge mode and the half-bridge mode. The paper describes the transition between these two modes of the input-side full-bridge inverter by applying hybrid phase shift modulation and asymmetrical pulsewidth modulation, respectively. Experimental results show the operation of the converter in a wide input voltage range and transition transients between the two modes.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115317352","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
Basis for Choosing the Nominal Voltage of the Network 选择电网标称电压的依据
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316609
J. Survilo
{"title":"Basis for Choosing the Nominal Voltage of the Network","authors":"J. Survilo","doi":"10.1109/RTUCON51174.2020.9316609","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316609","url":null,"abstract":"The rated medium voltages of electric networks are various and numerous in value; question arises why it is so. By trial and error, technicians have come to the cheapest solution in each case. The two objects of equal value can be expensive or cheap depending on the quantity of processed products, that is per unit cost can be diverse. Per unit power cost of electricity delivery depends primarily on the cost of power lines and transformer substations which for both of them increases with rated voltage. However in per unit cost of a network, the share of power lines increases but of transformers decreases with the power (with supply zone) increasing. So per unit cost is optimum (minimum) at a certain value of both voltage and the supply zone. These factors (and others) differed in different regions, which led to many rated voltages. If at a given rated voltage the per unit power cost decreases with the supply zone increase, then we have cost decreasing network, otherwise - cost increasing network, which leads to a different network planning approach.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128654171","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 Influence of the Thermal Storage on the Electricity Production in a Co-Generation in Peak and Off-Peak Time Range 高峰和低谷时段热电联产蓄热对发电量的影响
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316576
Aleksandrs Soročins, D. Rusovs, J. Nagla, V. Žentiņš
{"title":"The Influence of the Thermal Storage on the Electricity Production in a Co-Generation in Peak and Off-Peak Time Range","authors":"Aleksandrs Soročins, D. Rusovs, J. Nagla, V. Žentiņš","doi":"10.1109/RTUCON51174.2020.9316576","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316576","url":null,"abstract":"The paper reviews possibility to increase electricity production in co-generation plants in the time range, when electricity cost is high. Daily heat and electric load schedules are different, in order to get maximum efficiency the authors discusses the decisions on installing a heat storage for shifting the heat load. During the high price of electricity, cogeneration produces a maximum of electricity, and heat accumulates to heat storage with following heat discharge to the district heating system to consumers. Such a system allows you to create a smart grid between fuel consumption and heat/electricity production which will allow more efficient use of resources.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127843472","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
Resilience of the Baltic power system when operating in island mode 波罗的海电力系统在孤岛模式下的弹性
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316616
Dmitrijs Guzs, Andrejs Utans, A. Sauhats, G. Junghāns, Jurijs Silinevics
{"title":"Resilience of the Baltic power system when operating in island mode","authors":"Dmitrijs Guzs, Andrejs Utans, A. Sauhats, G. Junghāns, Jurijs Silinevics","doi":"10.1109/RTUCON51174.2020.9316616","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316616","url":null,"abstract":"The increased usage of natural gas for power generation in Europe due to raising carbon prices and developments of intermittent renewable energy has led to a stronger intertie between gas and power grids. With this the resilience of the total energy system is quantified by the ability of each type of grid infrastructure to withstand disturbances in the other ones. The main goal of the paper is to study the resilience of the Baltic energy system in the case of a major disturbance in the natural gas transmission grid. A case study of a disturbance is performed, response of the power grid is studied and the resilience of the energy system is assessed. The results can be used in the planning activities of Baltic power grid operators.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124632919","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
Improving Dynamic Stability of deregulated power system 提高电力系统的动态稳定性
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316618
S. Rouhani, Roya Ahmadiahangar, Tobias Häring, A. Rosin
{"title":"Improving Dynamic Stability of deregulated power system","authors":"S. Rouhani, Roya Ahmadiahangar, Tobias Häring, A. Rosin","doi":"10.1109/RTUCON51174.2020.9316618","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316618","url":null,"abstract":"One of the most important problems in the daily function of the power system is generation programming and its control. The primary purpose of Automatic Generation Control (AGC) is balancing the whole generation system against load variations and system losses. In a power system, any unpredictable variations of consumption load will cause fluctuation in frequency and the current power between the lines. Load frequency control is one of the main problems in the power system which synchronizes with automatic generation control. In this paper, a three area power system in a deregulated environment with the participation of the hybrid generation wind turbine with Doubly Fed Induction Generator (DFIG), hydro, and thermal power plants is studied. The load in this power system is considered a random variable form that periodically and randomly has a frequency of 0.25% around the nominal amount. One of the consequences of using Doubly Fed Induction Generator and variable load in the Restructured Power Systems is the frequency of oscillation. To reduce this fluctuation the Automatic Voltage Regulator (AVR) equipped by Power System Stabilizer (PSS), FACTs devises and PID controller has been used. PID controller parameters have been optimized by Imperialist Competitive, genetic and Particle swarm optimization algorithm.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121142443","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
Problems that have arisen in universities in connection with COVID-19 on the example of the Double Degree Master's Program “Electric Vehicles and Energy-Saving Technologies” 高校应对新冠肺炎出现的问题——以“电动汽车与节能技术”双学位硕士项目为例
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316601
S. Arhun, A. Hnatov, H. Hnatova, A. Patlins, N. Kunicina
{"title":"Problems that have arisen in universities in connection with COVID-19 on the example of the Double Degree Master's Program “Electric Vehicles and Energy-Saving Technologies”","authors":"S. Arhun, A. Hnatov, H. Hnatova, A. Patlins, N. Kunicina","doi":"10.1109/RTUCON51174.2020.9316601","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316601","url":null,"abstract":"The paper analyzes the problems that have arisen in universities in connection with the COVID-19 pandemic using the example of the international educational master's program of double degrees “Electric Vehicles and Energy-Saving Technologies” (EV&EST). Riga Technical University and Kharkiv National Automobile and Highway University are participating in the development of the EV&EST program. A brief description of the EV&EST program and the priority tasks that were set for its implementation are given. Problems that hinder the timely completion of some tasks are identified. A brief description of the distance course, which was developed within the framework of the EV&EST program in the Moodle educational environment, is given. A complex for laboratory and practical exercises based on a solar charging station for electric vehicles, which was developed under conditions of adaptive quarantine, is described. Laboratory and practical exercises have been developed at this complex.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130625566","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
Unsupervised Transport Vehicle Control: Simulation Study and Performance Results 无监督运输车辆控制:仿真研究与性能结果
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316595
A. Beinarovica, M. Gorobetz, Ivars Alps
{"title":"Unsupervised Transport Vehicle Control: Simulation Study and Performance Results","authors":"A. Beinarovica, M. Gorobetz, Ivars Alps","doi":"10.1109/RTUCON51174.2020.9316595","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316595","url":null,"abstract":"This paper presents current results of the research, aimed at the developing of motion control algorithms and systems for unsupervised electric vehicles, and discusses the results of the computer simulations and necessary parameters. The task of current research is to develop immune neural network based system structure and computer model for analyzing the situation and minimizing the collision probability by changing electrical vehicles movement parameters, to develop the computer model and to find appropriate parameters for best simulation results.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133923883","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
Analysis and evaluation of experts judgements consistency during electrical equipment diagnostics 电气设备诊断中专家判断一致性的分析与评价
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316577
S. Dmitriev, M. Safaraliev, S. Gusev, Odinaev Ismoil, J. Ahyoev, Jahongir Khujasaidov, I. Zicmane
{"title":"Analysis and evaluation of experts judgements consistency during electrical equipment diagnostics","authors":"S. Dmitriev, M. Safaraliev, S. Gusev, Odinaev Ismoil, J. Ahyoev, Jahongir Khujasaidov, I. Zicmane","doi":"10.1109/RTUCON51174.2020.9316577","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316577","url":null,"abstract":"Optimization of power equipment lifecycle is one the most important problems of power system management. At the first stage of analysis an expert judgement is a key element in the smooth transition from preventative maintenance system to condition monitoring under the present technological conditions of grid equipment diagnostics. A comparative analysis of experts judgements consistency during electrical equipment diagnostics is described in this study. The research have shown that conclusions can be made concerning reasons of some failures with appropriate signs of transformer or switching equipment failure, as well as with fuzzy linguistic estimates of the signs made by experts. The considered examples show the possibility of precedence ranking of reasons for pre-failure state, which is defined by the membership function values within the range from 0 to 1. Credibility of the result is achieved through the expert judgements consistency, setting fuzzy relations between criteria and possible reasons of the defects. In connection with the above results, the research of real recommendations to use the statistics methods for expert judgements analysis depending on the real technical state of electrical equipment. Also, the study provides the comparative analysis of mean and median rankings of experts judgements consistency using the Kemeny median method.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134614665","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
An Extended Pulse-Density-Modulated Series-Resonant Inverter for Induction Heating Applications 用于感应加热应用的扩展脉冲密度调制串联谐振逆变器
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316617
P. Herasymenko, O. Yurchenko
{"title":"An Extended Pulse-Density-Modulated Series-Resonant Inverter for Induction Heating Applications","authors":"P. Herasymenko, O. Yurchenko","doi":"10.1109/RTUCON51174.2020.9316617","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316617","url":null,"abstract":"This paper presents an extended series-resonant inverter (SRI) with the output current control based on the pulse-density-modulation (PDM) control technique. The use of the extended SRI with a PDM technique is proposed to reduce the amplitude fluctuation of the SRI output current. The extended SRI topology is a combined topology of full-bridge and half-bridge inverters. The operation principle of the extended SRI with the PDM technique is shown. The effectiveness of using the extended SRI topology is also demonstrated compared to a conventional full-bridge SRI topology with PDM. The evaluation of effectiveness is determined in two ways: the difference between the values of the minimum amplitude current and reducing relative values of the peak-to-peak current amplitude fluctuation. Theoretical analysis shows that it is possible to achieve the effectiveness in increasing the minimum current amplitude up to 19.8% at the quality factor of 5 and reduce peak-to-peak current amplitude fluctuations at least twice. The extended pulse-density-modulated SRI is theoretically discussed and also verified with an experimental setup. Some of the experimental results are shown.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115441917","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: 5
Possibilities of Using Solar Energy in the Regions of Turkmenistan 在土库曼斯坦地区使用太阳能的可能性
2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) Pub Date : 2020-11-05 DOI: 10.1109/RTUCON51174.2020.9316475
Jumayev Aganiyaz
{"title":"Possibilities of Using Solar Energy in the Regions of Turkmenistan","authors":"Jumayev Aganiyaz","doi":"10.1109/RTUCON51174.2020.9316475","DOIUrl":"https://doi.org/10.1109/RTUCON51174.2020.9316475","url":null,"abstract":"The paper presents an analysis of the potential of solar energy in the regions of Turkmenistan. Based on the calculations of solar radiation in the regions of Turkmenistan, an estimate of the amount of solar energy received by the solar panel was obtained. The optimal orientation of solar panels and the expected amount of electricity generated by solar panels are determined.","PeriodicalId":332414,"journal":{"name":"2020 IEEE 61th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115480487","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
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