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2023 23rd International Scientific Conference on Electric Power Engineering (EPE)最新文献

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Operation of directional overcurrent protection in Microgrids 微电网定向过流保护的运行
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149271
R. Štefko, Zsolt Čonka, M. Pavlík, Samuel Bucko, Dušan Medved’, M. Kolcun
{"title":"Operation of directional overcurrent protection in Microgrids","authors":"R. Štefko, Zsolt Čonka, M. Pavlík, Samuel Bucko, Dušan Medved’, M. Kolcun","doi":"10.1109/EPE58302.2023.10149271","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149271","url":null,"abstract":"This paper aims to raise awareness of the different ways of evaluating fault current direction using directional overcurrent protective relays. A comparison has been made for currently used protective relays from SEL and ABB in distribution networks. It is for their further use in microgrids that it is necessary to know what algorithm they use. Published articles in this area of research indicate that the current protection system cannot be used in microgrids and will be replaced by a new one. The most problematic part of the use of overcurrent protection in microgrids is the application of renewable power sources, which are mostly connected through inverters whose short-circuit current contribution is around 1.4 multiples of the rated value of the nominal current.","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121805496","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 of Polarization and Depolarization Currents of Samples of NOMEX®910 Cellulose–Aramid Insulation Impregnated with Nytro® BIO 300X Nytro®BIO 300X浸渍NOMEX®910纤维素-芳纶绝缘材料样品的极化和退极化电流分析
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149235
Adam Krotowski, S. Wolny
{"title":"Analysis of Polarization and Depolarization Currents of Samples of NOMEX®910 Cellulose–Aramid Insulation Impregnated with Nytro® BIO 300X","authors":"Adam Krotowski, S. Wolny","doi":"10.1109/EPE58302.2023.10149235","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149235","url":null,"abstract":"This paper presents the results of laboratory tests analysing the effect of accelerated thermal ageing on the temporal characteristics of polarisation and depolarisation currents, of transformer insulation samples made of NOMEX®910 hybrid cellulose-aramid electrical insulating paper, impregnated with Nytro®BIO 300X insulating liquid. The accelerated laboratory thermal ageing process consisted of annealing samples of the analysed insulation, at a number of selected temperatures, over a specified period of time. The temperatures and annealing times of the samples were chosen to replicate as closely as possible the ageing process of transformer insulation occurring during the long-term operation of power transformers in the structure of the National Power System. To determine the degree of ageing of the samples tested in the laboratory, the polarisation and depolarisation current analysis method (PDC Method) was used. The result of the analysis are regression functions of the activation energy and dominant time constants of the components of the cellulose-aramid insulation NOMEX®910, with consideration of the effect of temperature and the degree of thermal degradation of the cellulose fibres.","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125237531","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
Partial Discharges in Electronic Parts in Low Air Pressure Environment 低压环境下电子零件局部放电
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149249
Ondřej Kabot, L. Klein, M. Kunicki, M. Kozioł
{"title":"Partial Discharges in Electronic Parts in Low Air Pressure Environment","authors":"Ondřej Kabot, L. Klein, M. Kunicki, M. Kozioł","doi":"10.1109/EPE58302.2023.10149249","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149249","url":null,"abstract":"This paper describes the issues of partial discharges in electronic parts in environments with low air pressure. Such ambient conditions have significant impact on breakdown voltage, as it is described by Paschen’s curve. There is very little research that would address measurement of actual commercially available parts. Pashen’s curve describes relation between breakdown voltage and air pressure, but partial discharges can be present below the threshold set by the curve. The biggest issue is to measure only partial discharges inside tested parts as the outer flashovers are not being investigated. In the following paragraphs measurement methods are described.","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127202053","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
Europe to North America Super-Grid Utilizing Iceland and Greenland Renewable Energy Potential Part II: Power Management Scenarios 利用冰岛和格陵兰岛可再生能源潜力的欧洲到北美超级电网第二部分:电力管理方案
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149259
Raoul Voisin, Kevin Wang, M. F. Abdel-Fattah
{"title":"Europe to North America Super-Grid Utilizing Iceland and Greenland Renewable Energy Potential Part II: Power Management Scenarios","authors":"Raoul Voisin, Kevin Wang, M. F. Abdel-Fattah","doi":"10.1109/EPE58302.2023.10149259","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149259","url":null,"abstract":"The goal of this paper is to estimate the amount of energy produced in North America and Europa from conventional power sources that can be substituted with energy produced by renewable sources if both Iceland and Greenland were able to utilize their potentials in renewable energy sources. In order to estimate the impact of this work, some assumptions have been made. Furthermore, the current state-of-the-art technologies regarding voltage levels and connection possibilities have been investigated, with the purpose that the most efficient interconnection with the least losses. Then different scenarios for the simulations are assumed for different cases are presented. For the integration of the generated renewable energy from Iceland and Greenland, several different scenarios are presented for investigation.","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"451 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129367425","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 Numerical Model for DC Partial Discharges in Internal Voids 内腔直流局部放电的数值模型
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149268
Kristian Hudec, R. Procházka
{"title":"A Numerical Model for DC Partial Discharges in Internal Voids","authors":"Kristian Hudec, R. Procházka","doi":"10.1109/EPE58302.2023.10149268","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149268","url":null,"abstract":"The paper focuses on partial discharges in high-voltage insulation systems under DC voltage stress. With the increasing number of high-voltage DC systems installations, the importance of research on the properties of insulation systems at voltages other than the industrial frequency voltage is increasing. At DC voltages, the PSA method is often used to detect and identify the type of partial discharges. Numerical models can be used to study PSA patterns of partial discharges, considering the physical processes, statistical behavior, and memory effect of partial discharges. The proposed numerical model allows simulation of the influence of the parameters of internal partial discharges in the insulation system on the patterns obtained by the PSA method.","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116305461","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
Determination of Critical Parameters and Interdependencies of Infrastructure Elements in Smart Grids 智能电网中关键参数的确定及基础设施要素的相互依赖性
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149250
Matěj Vrtal, R. Fujdiak, Jan Benedikt, D. Topolanek, M. Ptacek, P. Toman, J. Misurec, Michal Beloch, P. Praks
{"title":"Determination of Critical Parameters and Interdependencies of Infrastructure Elements in Smart Grids","authors":"Matěj Vrtal, R. Fujdiak, Jan Benedikt, D. Topolanek, M. Ptacek, P. Toman, J. Misurec, Michal Beloch, P. Praks","doi":"10.1109/EPE58302.2023.10149250","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149250","url":null,"abstract":"Efficient and reliable operation of smart grids is based on the identification and determination of critical parameters and interdependencies between interconnected power and communication network infrastructures. This paper presents a comprehensive analysis of elements of the smart grid infrastructure, focusing on the determination of critical parameters and interdependencies for further modeling and analysis. A representative model of the interconnected infrastructure is presented, taking into account the physical characteristics of the power system, including the electrical behavior of the grid and the communication network (including the control and monitoring systems). A method for determining of critical parameters and their interdependencies is presented, and a table of parameters for further deeper network analysis is established. The study concludes with a discussion of the limitations of the model and possible future directions for research in this area.","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116312853","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
Influence of Phasor Measurement Unit Accuracy on State Estimation in Power System 相量测量单元精度对电力系统状态估计的影响
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149225
Ali Aljazaeri, P. Toman
{"title":"Influence of Phasor Measurement Unit Accuracy on State Estimation in Power System","authors":"Ali Aljazaeri, P. Toman","doi":"10.1109/EPE58302.2023.10149225","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149225","url":null,"abstract":"State estimation in power system is an iterative solution problem in nature due to the nonlinear relation between measurements and system state variables. Consequently, estimated results will be approximated. The advancement in phasor measurement technology brings new opportunities to improve the state estimation performance by eliminating the nonlinearity issues. In this paper, a phasor measurement-based linear state estimator for IEEE 14 bus system is presented and it has been examined for different possible measurement errors according to Monte Carlo theory. The test was performed as per the IEEE Std. C37.118.1 -2011. The superiority of the linear state estimator over the conventional state estimator in respects of accuracy and robustness will be highlighted. The influence of phasor voltage measurement errors and current measurement errors on the state estimation result will be comprehensively investigated and discussed in this work.","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"60 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127579141","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
Effect of Ambient Temperature on EV Charging Curves After Seven Years of EV Operation 环境温度对电动汽车运行7年后充电曲线的影响
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149281
Vojtech Blazek, Ivo Pergl, Pavel Kedroň, Marian Piecha, M. Bajaj
{"title":"Effect of Ambient Temperature on EV Charging Curves After Seven Years of EV Operation","authors":"Vojtech Blazek, Ivo Pergl, Pavel Kedroň, Marian Piecha, M. Bajaj","doi":"10.1109/EPE58302.2023.10149281","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149281","url":null,"abstract":"This article presents measured charging curves of offering incentives to encourage EV adoption. In 2020, EV the 2016 Nissan Leaf with ambient temperatures in the Czech sales surpassed 2 million worldwide, and it’s expected that this Republic. Our monitored electric vehicle (EV) has a battery of number will continue to grow as battery technology improves, 30 kWh. All charged curves were measured at the charge level 2 mode on the VSB - Technical University of Ostrava campus. charging infrastructure expands, and governments implement In our case, the Nissan Leaf battery has a State of Health (SoH) stricter emissions regulations. Fig. 1 shows EV growth over at 77.3% and a total mileage of 111 656 km. On a full charge, the years [1], [2]. the dashboard reads a range of 148 km. Charge curves from 85100% SoC are presented in the article’s temperature range from -11°C to 32°C. Long-term measurement results show ambient temperatures do not affect charging curves between 0-85% SOC. The charging curves at -11°C and 32°C are shown in detail with a trend link. The EV was used daily and represented normal wear and tear in the road and atmospheric conditions of the Czech Republic.","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133128379","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
Neutron irradiation effects in La2Zr2O7 pyrochlore La2Zr2O7焦绿盐的中子辐照效应
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149295
Asha Panghal, Y. Kumar, Nand Lal Singh, Vinod Kumar, K. Katovský
{"title":"Neutron irradiation effects in La2Zr2O7 pyrochlore","authors":"Asha Panghal, Y. Kumar, Nand Lal Singh, Vinod Kumar, K. Katovský","doi":"10.1109/EPE58302.2023.10149295","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149295","url":null,"abstract":"Isometric pyrochlore oxides (A<inf>2</inf>B<inf>2</inf>O<inf>7</inf>) offer a wide range of applications, including electrolytes, sensors, the immobilization of radioactive nuclides, and so on because of their extraordinary structural and physical properties. In the present study, neutron irradiation experiments were used to investigate the irradiation-induced defects in a complex oxide, La<inf>2</inf>Zr<inf>2</inf>O<inf>7</inf>. The grazing incident X-ray diffraction (GI-XRD) and Raman spectroscopy have been used to examine the defects in La<inf>2</inf>Zr<inf>2</inf>O<inf>7</inf> pyrochlore. To obtain more information about the defects in the La<inf>2</inf>Zr<inf>2</inf>O<inf>7</inf> system, positron annihilation spectroscopy was performed. GI-XRD study exhibits the significant amorphization processes and lattice contraction in La<inf>2</inf>Zr<inf>2</inf>O<inf>7</inf>.","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134544525","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 Use Of Hyperspectral Sensors In Aerial Inspections Of Overhead Transmission Lines 高光谱传感器在架空输电线路空中检测中的应用
2023 23rd International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2023-05-24 DOI: 10.1109/EPE58302.2023.10149286
Lubos Skurcák, Ján Gbelec, R. Sitko, Simon Salon, R. Forgác, Miloš Očkay
{"title":"The Use Of Hyperspectral Sensors In Aerial Inspections Of Overhead Transmission Lines","authors":"Lubos Skurcák, Ján Gbelec, R. Sitko, Simon Salon, R. Forgác, Miloš Očkay","doi":"10.1109/EPE58302.2023.10149286","DOIUrl":"https://doi.org/10.1109/EPE58302.2023.10149286","url":null,"abstract":"Hyperspectral imaging has become an active area of research and development in the world. In the past, hyperspectral imaging was only available to selected research teams in specific areas such as space research. Nowadays, the use of hyperspectral imaging systems is increasingly entering commercial use. Given the current technical capabilities, hyperspectral imaging can be implemented in the performance of aerial surveys of outdoor power lines","PeriodicalId":210548,"journal":{"name":"2023 23rd International Scientific Conference on Electric Power Engineering (EPE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129173401","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
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