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2017 18th International Scientific Conference on Electric Power Engineering (EPE)最新文献

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Practical application of in motion charging: Trolleybuses service on bus lines 动态收费的实际应用:无轨电车服务于公交线路
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-17 DOI: 10.1109/EPE.2017.7967239
M. Bartłomiejczyk
{"title":"Practical application of in motion charging: Trolleybuses service on bus lines","authors":"M. Bartłomiejczyk","doi":"10.1109/EPE.2017.7967239","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967239","url":null,"abstract":"Night charging and fast charging are currently the two most common systems for charging electric buses. Despite the fact that numerous trial installations were started, neither of these two systems has obtained unqualified approval of the users. The alternative is to charge vehicles in motion (the so-called In Motion Charging), which combines the advantages of trolleybus transport and of electric buses: the main supply source are traction batteries; however, the charging is performed in motion, without the necessity of stopping the vehicle.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128222964","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: 27
Overview of different concepts of traction drives with regard to high-speed PMSM 关于高速永磁同步电动机牵引传动的不同概念概述
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-17 DOI: 10.1109/EPE.2017.7967236
L. Veg, J. Laksar, R. Pechánek
{"title":"Overview of different concepts of traction drives with regard to high-speed PMSM","authors":"L. Veg, J. Laksar, R. Pechánek","doi":"10.1109/EPE.2017.7967236","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967236","url":null,"abstract":"In this paper is discussed and evaluated the using of various concept of traction drives in Czech Republic and in the World. The article is focused on application of innovative solutions especially high speed traction drives with permanent magnet synchronous machines. In the research is evaluated the impact of high speed application and assessed the advantages and disadvantages of the new concept and new possibilities with the older types.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"294 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114615587","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: 12
Calculation of sensitivity index using one-at-a-time measures based on graphical analysis 基于图形分析的一次测量灵敏度指数的计算
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-17 DOI: 10.1109/EPE.2017.7967329
J. P. Saraiva, B. S. Lima, V. Gomes, Paulo H. R. Flores, F. A. Gomes, A. O. Assis, Marcio R. C. Reis, W. R. H. Araujo, Calebe Abrenhosa, W. Calixto
{"title":"Calculation of sensitivity index using one-at-a-time measures based on graphical analysis","authors":"J. P. Saraiva, B. S. Lima, V. Gomes, Paulo H. R. Flores, F. A. Gomes, A. O. Assis, Marcio R. C. Reis, W. R. H. Araujo, Calebe Abrenhosa, W. Calixto","doi":"10.1109/EPE.2017.7967329","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967329","url":null,"abstract":"This work proposes different methods to calculate the sensitivity of system parameters based on graphic analysis. From percentages variations in base values of the parameters, one-at-a-time measures are taken to the construction of a graph that expresses the impact on the output caused by variations in the inputs. Two case studies are proposed, with simulated and experimental data, in which the proposed methods are applied and compared based on the values of the sensitivity indices for ranges of interest. All methods confirm quantitatively the most sensitive variables and the choice of one of the methods depends on the characteristics considered relevant for analysis, i.e., degree of sensitivity of a parameter in relation to another, the behavior of the curve and presence of peaks.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124233476","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: 17
Under frequency load shedding threats in island operation 孤岛运行频率下的减载威胁
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-17 DOI: 10.1109/EPE.2017.7967317
Václav Mužik, Z. Vostracký
{"title":"Under frequency load shedding threats in island operation","authors":"Václav Mužik, Z. Vostracký","doi":"10.1109/EPE.2017.7967317","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967317","url":null,"abstract":"Island operation possibility plays nowadays an important role in the view of preserving a part of the power system working during close-to-blackout emergency states such as collapsing power system divided in to smaller parts. Unfortunately following paper shows that not all regulation tools available for the transmission system operator (TSO) which are secured by the national grid code might be used during the island operation (respectively speed control mode of the power sources) for the same purpose of preventing frequency collapse. Under Frequency Load Shedding (ULFS) might cause an automatic disconnection of the working power station. This topic is demonstrated on an example system (city of Pilsen) on reality based input data. In the end the question of further research and solutions are discussed.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114776041","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
Creating and measuring unipolar and bipolar ultra-low voltage step-up converters 创建和测量单极和双极超低电压升压转换器
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-01 DOI: 10.1109/EPE.2017.7967308
Petr Hawliczek, Dung Vo Tien, R. Goňo
{"title":"Creating and measuring unipolar and bipolar ultra-low voltage step-up converters","authors":"Petr Hawliczek, Dung Vo Tien, R. Goňo","doi":"10.1109/EPE.2017.7967308","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967308","url":null,"abstract":"The paper contemplated the possibility of using the power thermobattery with special converters that operate from voltages in the tens of millivolts. Two such converters have been developed; their characteristics have been measured and documented. The only thermobattery with such a converter is able to supply low-power devices from the temperature difference of one tenth of a degree Celsius.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115306851","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
LiFePo battery charger with controlled rectifier 带有可控整流器的LiFePo电池充电器
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-01 DOI: 10.1109/EPE.2017.7967351
V. Sládeček, M. Kuchar, P. Palacky
{"title":"LiFePo battery charger with controlled rectifier","authors":"V. Sládeček, M. Kuchar, P. Palacky","doi":"10.1109/EPE.2017.7967351","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967351","url":null,"abstract":"The paper focuses on the charging of LiFePO batteries with big output voltage. This voltage is necessary to feed a frequency inverter circuit with approx. output of 7.5 kW. This is a part of the solution applied during the Pre-seed project solved in the past at VSB — TUO Ostrava. Due to the unavailability of standard chargers, we provide a solution based on the Siemens 6RA80 controlled rectifier.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115479001","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
Assessment of dielectric properties of cable insulation 电缆绝缘介质性能评定
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-01 DOI: 10.1109/EPE.2017.7967226
V. Ďurman, M. Váry, J. Packa, J. Lelák, V. Šály
{"title":"Assessment of dielectric properties of cable insulation","authors":"V. Ďurman, M. Váry, J. Packa, J. Lelák, V. Šály","doi":"10.1109/EPE.2017.7967226","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967226","url":null,"abstract":"Absorption current measurements and very low frequency dielectric measurements were performed to evaluate the insulation properties of halogen free fire retardant cables at various temperatures. Changes of electrical parameters have been used for the cables characterization and comparison. The results of measurements proved a complex character of the dielectric phenomena, which consist of several independent processes with individual response to the temperature changes. In the paper a technique of dielectric measurements and analysis of their results was reviewed with emphasis on the range of very low frequencies. The measured and calculated parameters will be used in the future as a start point for evaluation of the cables ageing.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"1040 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123139829","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
Monitoring of leakage current on HV surge arrester as pollution indicator of external insulation 高压避雷器泄漏电流监测作为外绝缘污染指标
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-01 DOI: 10.1109/EPE.2017.7967283
B. Dolník, J. Briančin
{"title":"Monitoring of leakage current on HV surge arrester as pollution indicator of external insulation","authors":"B. Dolník, J. Briančin","doi":"10.1109/EPE.2017.7967283","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967283","url":null,"abstract":"The pollution of external insulation of power equipment has a significant impact on the lifetime of electrical equipment. The paper is focused on the possibility of using monitoring leakage current through the external insulation of hv surge arresters as indicator of pollution. In the experiment the modified procedure for the preparation of the polluting layer was used. The leakage current on the surface of the external insulation of the hv surge arrester and the internal leakage current of the hv surge arrester was monitored. It was found, that the surface resistivity of a sample with polluting layer in wet conditions, decreased by almost two orders of magnitude. The experimental results show that monitoring of leakage current along the surface of the external insulation is a useful indicator of pollution. In addition, measurement of the leakage current on the surge arrester with pollution layer during wet weather can lead to significantly erroneous results.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125263019","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 new approach to predictive maintenance of high voltage switching devices 高压开关器件预测性维护的新方法
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-01 DOI: 10.1109/EPE.2017.7967303
Emil Lazarescu, F. Frigura-Iliasa, M. Frigura-Iliasa, P. Andea, D. Vatau
{"title":"A new approach to predictive maintenance of high voltage switching devices","authors":"Emil Lazarescu, F. Frigura-Iliasa, M. Frigura-Iliasa, P. Andea, D. Vatau","doi":"10.1109/EPE.2017.7967303","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967303","url":null,"abstract":"Predictive maintenance of high voltage devices is a major issue for all power providers, due to costs and complexity. This article provides some theoretical and experimental principles which can be useful for all maintenance operations performed on high voltage switching devices and some simple methods applicable for assessing the status of all their contacts. Some of the aspects described here are applicable to other high voltage devices like insulators, surge-arresters etc. An original model based on fuzzy-logic algorithms is performed in order to determine the main elements and issues of the predictive maintenance. All these algorithms are integrated into powerful software tools for all types of high voltage equipment maintenance. It could prove the idea of obtaining a higher service efficiency for existing pieces of equipment, with very low costs.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125521748","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
Operation analysis of automated parking system with off-grid supply system 离网供电自动泊车系统运行分析
2017 18th International Scientific Conference on Electric Power Engineering (EPE) Pub Date : 2017-05-01 DOI: 10.1109/EPE.2017.7967224
L. Prokop, T. Sikora, S. Mišák
{"title":"Operation analysis of automated parking system with off-grid supply system","authors":"L. Prokop, T. Sikora, S. Mišák","doi":"10.1109/EPE.2017.7967224","DOIUrl":"https://doi.org/10.1109/EPE.2017.7967224","url":null,"abstract":"Automated parking system (APS) is a mechanical system designed to minimize the area and/or volume required for parking cars. It is a solution for areas with a minimum place to parking, especially in city center. Sometimes there are some APS which are equipped with charge station for E-vehicle. Respecting power consumption of APS and possible charging stations there should be a problem with supply whole facility via distribution network (in city center usually cable lines). Cable lines are usually tens of years old with a limited transmission capacity and very expensive and technologically demanding modernization. One of the possible solutions how supply APS equipped with charging station is an application of renewables together with storage devices. We introduce power supply system for APS based on renewables and storage devices with possibility to operate in off-grid mode in this paper. Description of monitoring system is also included. A basic analysis of operation of the APS with off-grid supply system is presented in the second part of the paper.","PeriodicalId":201464,"journal":{"name":"2017 18th International Scientific Conference on Electric Power Engineering (EPE)","volume":"286 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116442055","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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