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2019 20th International Scientific Conference on Electric Power Engineering (EPE)最新文献

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Possibilities of Using Waste Heat from Computers 利用计算机余热的可能性
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778170
P. Muhl, V. Král
{"title":"Possibilities of Using Waste Heat from Computers","authors":"P. Muhl, V. Král","doi":"10.1109/EPE.2019.8778170","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778170","url":null,"abstract":"This article describes the possibility of using waste heat generated by computers performing blockchain computational operations. It shows technical design of the computing station, analyzes the possibilities of transporting waste heat to heating systems through heat exchangers. It also includes the practical design of the computational station used for the production of heat in the family house and the simplified possibility of remote control of the station throughout the Internet.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130868554","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
Electromagnetic Disturbance in Industrial LED Lighting Systems 工业LED照明系统中的电磁干扰
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8777951
M. Balsky, Tomas Zeifart, Michal Kozlok
{"title":"Electromagnetic Disturbance in Industrial LED Lighting Systems","authors":"M. Balsky, Tomas Zeifart, Michal Kozlok","doi":"10.1109/EPE.2019.8777951","DOIUrl":"https://doi.org/10.1109/EPE.2019.8777951","url":null,"abstract":"The electromagnetic disturbance of individual LED luminaires and the requirements of technical standards to limit it are well known. This paper focuses on the analysis of electromagnetic disturbance of entire industrial LED lighting systems with a high number of luminaires and hence high power consumption. In such large industrial lighting systems, the effects of electromagnetic disturbance may be very different from the electromagnetic disturbance of individual luminaires.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124006645","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 Effect of Dimming and non-Dimming LED Lights on the Quality of the Electrical Grid 调光和非调光LED灯对电网质量的影响
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778175
M. Taraba, Juraj Adamec, M. Danko, P. Drgona
{"title":"The Effect of Dimming and non-Dimming LED Lights on the Quality of the Electrical Grid","authors":"M. Taraba, Juraj Adamec, M. Danko, P. Drgona","doi":"10.1109/EPE.2019.8778175","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778175","url":null,"abstract":"This paper deals with the power supply of electric lights, focuses attention on the quality of the power source, which is directly related to the influence on the public electricity grid. Modern LED lights, which can be fabricated in different variants, are used in households and industry mainly for their economic operation. The reliability of these luminaires is many times longer than recently used neon tubes or lamps with tungsten filament. The paper compares the measured data from several variants of the LED lights dedicated to different applications for household or for industry. Samples of lights, which were compared, are lights for household, industry, and street lighting. Important quality factors are PF THD parameters with gradual dimming that is controlled by an external module or directly integrated in the luminaire case. These parameters are directly related to the impact on the public electricity grid. Measured values were recorded at 100%, 70% and 50% dimming.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125007080","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
Flue Gas Heat Recovery in High Efficient Coal-fired Power Plant 高效燃煤电厂烟气热回收研究
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8777958
J. Buchta, A. Oziemski
{"title":"Flue Gas Heat Recovery in High Efficient Coal-fired Power Plant","authors":"J. Buchta, A. Oziemski","doi":"10.1109/EPE.2019.8777958","DOIUrl":"https://doi.org/10.1109/EPE.2019.8777958","url":null,"abstract":"The paper presents the issue of waste heat recovery in high-efficiency power units. Structures of flue gas heat recovery systems (FGHRS) are presented starting from the system with heating of flue gases after their desulphurization. Systems using waste heat of flue gas to heat feed water in low-pressure and high-pressure regeneration are discussed. In addition, the results of simulation are presented in order to assess the potential for efficiency increase by using a heat recovery system in the 900 MW class lignite-fired power unit.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123096301","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
Improvement of transient stability using STATCOM combined with optimization 利用STATCOM结合优化技术提高暂态稳定性
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778105
Lavr Vetoshkin, J. Votava, J. Kynčl, Z. Müller
{"title":"Improvement of transient stability using STATCOM combined with optimization","authors":"Lavr Vetoshkin, J. Votava, J. Kynčl, Z. Müller","doi":"10.1109/EPE.2019.8778105","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778105","url":null,"abstract":"Further improvement of FACTS (Flexible Alternating Current Transmission System) control can help to increase the transient stability of a power system without adding extra grid inertia. Sophisticated optimization algorithms and modern Computer Algebra Systems provide new means of controller synthesis for power systems. The paper presents an approach of enhancement of transient stability using FACTS devices, particularly STATCOM (Static Synchronous Compensators), combined with optimization. Furthermore, chapter 3 describes different ways of defining the objective function. Different approaches are compared using the case study model that was implemented in MATLAB/Simulink.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121485940","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
New User-Friendly Software Application to Simulate and Visualize The Distribution System Operation 新的用户友好的软件应用程序来模拟和可视化配电系统的运行
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778180
Jan Vysocký, Vojtech Blazek, Michal Petruzela, S. Mišák, L. Prokop
{"title":"New User-Friendly Software Application to Simulate and Visualize The Distribution System Operation","authors":"Jan Vysocký, Vojtech Blazek, Michal Petruzela, S. Mišák, L. Prokop","doi":"10.1109/EPE.2019.8778180","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778180","url":null,"abstract":"This paper presents a new software application that simulates and visualizes the operation of the electrical distribution system (DS) and so helps understand various process occurring in the DS. The application runs on Windows operating systems and consists of five parts: DS modeling subsystem, DS parts' parameters settings subsystem, DS operation simulation scenario creation subsystem, DS operation simulation visualization subsystem, and mathematical core. This application is the result of an effort to connect two areas of engineering research that have not yet been well connected, particularly the power system simulation software development and the data visualization software development. This application features a graphical user interface that enables users to create a DS operation simulation easily and quickly, and to understand and easily read many values during DS simulation visualization. We aimed at user-friendliness and quick-adjustability of the application. The accomplishment of these goals was tested by a group of experienced university students in the course of one year. The students also participated in a survey. The application was created using the programming language Matlab.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129348938","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
Chairman of Reviewing Committee 检讨委员会主席
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/epe.2019.8778086
{"title":"Chairman of Reviewing Committee","authors":"","doi":"10.1109/epe.2019.8778086","DOIUrl":"https://doi.org/10.1109/epe.2019.8778086","url":null,"abstract":"","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121574949","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
GaN power transistor switching performance in hard-switching and soft-switching modes GaN功率晶体管在硬开关和软开关模式下的开关性能
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778060
P. Sojka, M. Pipíška, M. Frivaldský
{"title":"GaN power transistor switching performance in hard-switching and soft-switching modes","authors":"P. Sojka, M. Pipíška, M. Frivaldský","doi":"10.1109/EPE.2019.8778060","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778060","url":null,"abstract":"The paper deals with the investigation of the switching performance of the GaN power transistors, while the focus is given on the comparisons of the performance within hard switching (HS) and soft switching, i.e. zero voltage switching commutation mode. For this purpose, specific testing device was utilized and adapted to switching requirements of selected transistor structure. Switching performance was identified in the way of power loss identification during the HS and ZVS commutation mode, whereby parametric evaluation in dependency on switching frequency and power load was done. The results show what is the amount of the power loss reduction when perspective transistor structure is used in combination with ZVS switching, even when very high frequency operation is considered.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121618491","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: 9
Arc Flash Risk Assessment - Overview of scope and different approaches in the US and in the EU 电弧闪光风险评估-美国和欧盟范围和不同方法的概述
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778008
B. Stacho, Jan Veleba, J. Dudek
{"title":"Arc Flash Risk Assessment - Overview of scope and different approaches in the US and in the EU","authors":"B. Stacho, Jan Veleba, J. Dudek","doi":"10.1109/EPE.2019.8778008","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778008","url":null,"abstract":"This paper gives the extensive overview about the Arc Flash Risk Assessment (AFRA) procedures and methodologies used in US and in EU environment. For both regions, the overview of related standards and guides is given. The main part of this paper describes the complete AFRA scope including arc flash risk identification, risk assessment (calculation) and risk control (mitigation). The AFRA flow chart is introduced to graphically present entire AFRA lifecycle with three possible approaches for AFRA execution (at present).","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117051225","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
Energy Harvesting from Discontinuous Flow 从不连续流中获取能量
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8777989
Michal Petruzela, Vojtech Blazek, Jan Vysocký, L. Prokop, D. Seidl
{"title":"Energy Harvesting from Discontinuous Flow","authors":"Michal Petruzela, Vojtech Blazek, Jan Vysocký, L. Prokop, D. Seidl","doi":"10.1109/EPE.2019.8777989","DOIUrl":"https://doi.org/10.1109/EPE.2019.8777989","url":null,"abstract":"This paper deals with harvesting energy of airflow created by vehicle passing by crash barrier and use this energy for light signalization. To analyse this airflow and to design shape of a wind flap that harnesses as much energy as possible we used two-way fluid-structure interaction in ANSYS software. This wind flap is mechanical extension of piezoelectric element (piezoelement). At first we searched for the best shape of wind flap that is selected in accordance with analyses results. Few of best shapes were experimentally tested to verify analyses. Next step was design of electronics that accumulates enough of electric energy to power light signalling device (in our case LED) for a short time.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117064820","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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