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

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Analyses of Trolleybus Recuperation Energy Utilisation Losses Considering Different Efficiency Ratios of Traction Inverter and DC/DC Converter 考虑牵引逆变器和DC/DC变换器不同效率比的无轨电车回收能量利用损失分析
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778054
Ģ. Staņa, V. Brazis
{"title":"Analyses of Trolleybus Recuperation Energy Utilisation Losses Considering Different Efficiency Ratios of Traction Inverter and DC/DC Converter","authors":"Ģ. Staņa, V. Brazis","doi":"10.1109/EPE.2019.8778054","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778054","url":null,"abstract":"The paper analyzes a case study on the efficiency of reuse of braking energy for electric public transport equipped with a mobile energy storage system depending on the efficiencies of the drive inverter and the DC/DC converter. Firstly, the simulations of the braking energy accumulation process were carried, followed by simulations of the process of reuse of previously stored energy. Losses in the accumulation process and losses during reuse were deducted from the full braking energy. Simulations of both new and used energy storage systems were carried to study also the effects of aging.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"69 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":"126408873","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
Thermal Analysis of LiFePO4 Battery Cell During Discharge with Constant Current LiFePO4电池恒流放电时的热分析
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778037
Juraj Adamec, M. Danko, M. Taraba, P. Drgona
{"title":"Thermal Analysis of LiFePO4 Battery Cell During Discharge with Constant Current","authors":"Juraj Adamec, M. Danko, M. Taraba, P. Drgona","doi":"10.1109/EPE.2019.8778037","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778037","url":null,"abstract":"This article deals with the influence of constant current discharge of battery with focus on temperature analysis. For test purpose was selected 3.2V cell, which can be used for a wide range of applications as electric vehicles, photovoltaics and power storage. LiFePO4cell with a capacity of 40Ah at discharge currents of 20A, 40A, 60A, 80A, 120A together with surface temperature analysis was selected. This thermal analysis also contains infrared pictures using a thermal camera at determined discharge currents.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"75 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":"117228464","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
Methods for Dynamic Stability Assessment 动态稳定性评价方法
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778182
P. Toman, B. Bátora, J. Koudelka, K. Máslo
{"title":"Methods for Dynamic Stability Assessment","authors":"P. Toman, B. Bátora, J. Koudelka, K. Máslo","doi":"10.1109/EPE.2019.8778182","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778182","url":null,"abstract":"The paper deals with dynamic stability assessment. It analyses application of two approaches for the transient (rotor angle) stability calculations. It compares results of the conventional time domain simulation tool with simplified direct methods.","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":"132821157","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
Dynamic Simulation of Black Start Capability 黑启动能力的动态仿真
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778152
Zsolt Čonka, M. Kolcun, K. Máslo
{"title":"Dynamic Simulation of Black Start Capability","authors":"Zsolt Čonka, M. Kolcun, K. Máslo","doi":"10.1109/EPE.2019.8778152","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778152","url":null,"abstract":"Paper deals dynamic calculations. It presents two cases for real black start tests and shows their dynamic simulation.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"5 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":"128114008","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 Practical Correction of Wavelength Uncertainty of Array Spectroradiometers 阵列分光辐射计波长不确定度的实用校正
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8777943
Martin Motyčka, J. Skoda, Jaroslav Štěpánek, J. Nekvapil
{"title":"The Practical Correction of Wavelength Uncertainty of Array Spectroradiometers","authors":"Martin Motyčka, J. Skoda, Jaroslav Štěpánek, J. Nekvapil","doi":"10.1109/EPE.2019.8777943","DOIUrl":"https://doi.org/10.1109/EPE.2019.8777943","url":null,"abstract":"This article has task to inform a reader about wavelength uncertainty of array spectroradiometers and propose corrections that can be performed on measured spectral data or moreover on photometric quantities that are already calculated from measured spectrum. Therefore, a several array spectroradiometers are tested on spectral accuracy and corrections coefficients are calculated for illuminance measurement for typical spectrums of fluorescent and LED light sources.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"65 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":"115903623","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
Usability Assessment of Mathematical Models of the Bathtub Curve 浴缸曲线数学模型的可用性评估
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778149
A. Hromádka, Zbyněk Martínek
{"title":"Usability Assessment of Mathematical Models of the Bathtub Curve","authors":"A. Hromádka, Zbyněk Martínek","doi":"10.1109/EPE.2019.8778149","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778149","url":null,"abstract":"This paper deals with the options how to model of the Bathtub Curve and how to properly estimate failure intensity during operation time of a system. Firstly, the term “Bathtub Curve” is described. The main part is connected with the demonstration of three possible models how to correctly estimate the failure intensity during operation of a system. The main aim of this paper is to assess usefulness of all investigated models for the estimation of failure intensities.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"190 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":"116111513","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
Evaluation of Importance of HV Switches According to their Location and Analysis of Protection Fault Logs 高压开关位置重要性评价及保护故障日志分析
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778163
V. Král, S. Rusek, R. Goňo, Zdenek Hytka, David Lazecký, Tomas Raska, J. Horák
{"title":"Evaluation of Importance of HV Switches According to their Location and Analysis of Protection Fault Logs","authors":"V. Král, S. Rusek, R. Goňo, Zdenek Hytka, David Lazecký, Tomas Raska, J. Horák","doi":"10.1109/EPE.2019.8778163","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778163","url":null,"abstract":"The paper describes the next part of the work deploying Reliability Centered Maintenance (RCM) on selected network elements, specifically on the HV switches of the selected distribution company area. The success of the RCM implementation requires appropriate selection of criteria describing the status and a significance of the element and, at the same time, appropriate setting of the assessment of the particular criterion and its weight. We deal in more detail with the analysis of one of the criteria of importance - Evaluation of importance criteria according to their location in the network, and evaluation of the protection fault logs, which are the basis for the evaluation of one of the criteria of the technical condition - Short-circuit history index.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"16 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":"114155981","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
Inspection of nuclear irradiated fuel 放射性核燃料的检查
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778114
Ondřej Šimek, Lukáš Radil, P. Toman
{"title":"Inspection of nuclear irradiated fuel","authors":"Ondřej Šimek, Lukáš Radil, P. Toman","doi":"10.1109/EPE.2019.8778114","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778114","url":null,"abstract":"This article deals with the inspection of nuclear irradiated fuel assemblies of pressurized water reactors (PWR). Fuel inspections are important for economical and safe operation of nuclear power plant. Several inspection methods are currently being developed which have their technological limits. The article gives an overview and discusses possible extensions inspection possibilities and their extension.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"28 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":"114585479","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
Measurement and Analysis of Stray Currents 杂散电流的测量与分析
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778072
Marek Siranec, M. Regula, A. Otcenásová, J. Altus
{"title":"Measurement and Analysis of Stray Currents","authors":"Marek Siranec, M. Regula, A. Otcenásová, J. Altus","doi":"10.1109/EPE.2019.8778072","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778072","url":null,"abstract":"Nowadays, the issue of stray currents is very actual, especially due to origin of electrochemical corrosion of storage devices. The biggest sources of stray currents are direct current traction systems such as railways and city lines using rails as a return conductor. In many cases, the return current does not flow back to traction converter substation by rails but uses other paths such as metallic devices stored under the ground (pipelines, metal-coat cables). This results in stray currents formation, which is the main cause of electrochemical corrosion. Electrochemical corrosion may cause serious damage of storage devices situated especially in proximity of direct current electrical traction systems. This paper deals with the issue of stray currents, describes the formation, spreading and the method of stray current measurement. The final part of this paper analyzes the results from real measurement of stray currents originating mostly from city tram lines. Measured data indicates a high activity of stray currents which can lead to damaging of metallic devices stored under the ground.","PeriodicalId":117212,"journal":{"name":"2019 20th International Scientific Conference on Electric Power Engineering (EPE)","volume":"9 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":"124277600","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
Implementation of Small Hydro Power Plants in Water Facilities 小型水力发电厂在水利设施中的实施
2019 20th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2019-05-01 DOI: 10.1109/EPE.2019.8778101
M. Král, R. Goňo, M. Goňo
{"title":"Implementation of Small Hydro Power Plants in Water Facilities","authors":"M. Král, R. Goňo, M. Goňo","doi":"10.1109/EPE.2019.8778101","DOIUrl":"https://doi.org/10.1109/EPE.2019.8778101","url":null,"abstract":"This paper deals with the issue of the location of small hydro power plants in the water supply systems. Here are the possible positions of location the SHPPs in the water supply system. An important part of the water supply system problems are the resulting losses due to faults in the water lines, which are also caused by excessive pressure in the water supply system. To help with selecting a turbine for SHPP, an application was created. The application results are compared to the real ones.","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":"121648860","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
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