Pub Date : 2020-10-19DOI: 10.1109/EPE51172.2020.9269232
Lavr Vetoshkin, Z. Müller
The adoption of renewable energy sources leads to lower grid inertia, which brings more complications to operators of electrical grids. New control strategies for power electronics try to cope with that problem by introducing virtual inertia. Sychronverter is one of the promising algorithms. Furthermore, other control techniques combined with synchronverter might improve stability. Model predictive control (MPC) has proven to be a good tool in real applications. Therefore, the authors present a simplified mathematical model of a PV power plant with a synchronverter. The paper also proves that the presented model can be applied to MPC for synchronverter. Depending on the stated objective, MPC for synchronverter can bring different advantages to the control of grid converters.
{"title":"A supervisory MPC for synchronverter","authors":"Lavr Vetoshkin, Z. Müller","doi":"10.1109/EPE51172.2020.9269232","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269232","url":null,"abstract":"The adoption of renewable energy sources leads to lower grid inertia, which brings more complications to operators of electrical grids. New control strategies for power electronics try to cope with that problem by introducing virtual inertia. Sychronverter is one of the promising algorithms. Furthermore, other control techniques combined with synchronverter might improve stability. Model predictive control (MPC) has proven to be a good tool in real applications. Therefore, the authors present a simplified mathematical model of a PV power plant with a synchronverter. The paper also proves that the presented model can be applied to MPC for synchronverter. Depending on the stated objective, MPC for synchronverter can bring different advantages to the control of grid converters.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125270429","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}
Pub Date : 2020-10-19DOI: 10.1109/EPE51172.2020.9269270
J. Urbanský, L. Beňa, Vladimír Krištof, Marek Hvizdoš
This paper deals with forgotten element to reduce short-circuit currents - duplex reactor. Short-circuit withstand capability of electrical devices is important parameter from point of view of power system design and operation safety. If short-circuit currents exceed accessible limits there are some possibilities how to reduce them. One possibility of reducing fault currents is to use of duplex reactor in power system. This element has significant advantages in comparison to other ways of reducing short-circuit currents.
{"title":"Duplex Reactor - Forgotten Element to Reduce Short-Circuit Currents","authors":"J. Urbanský, L. Beňa, Vladimír Krištof, Marek Hvizdoš","doi":"10.1109/EPE51172.2020.9269270","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269270","url":null,"abstract":"This paper deals with forgotten element to reduce short-circuit currents - duplex reactor. Short-circuit withstand capability of electrical devices is important parameter from point of view of power system design and operation safety. If short-circuit currents exceed accessible limits there are some possibilities how to reduce them. One possibility of reducing fault currents is to use of duplex reactor in power system. This element has significant advantages in comparison to other ways of reducing short-circuit currents.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121616611","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}
Pub Date : 2020-10-19DOI: 10.1109/EPE51172.2020.9269256
Martin Bejvl, P. Šimek, V. Valouch, R. Hauptmann
The paper presents possibilities of compensation of general single-phase load connected to the three-phase grid. The compensation is to ensure a symmetrical and pure active load of the three-phase grid. It is documented that after the proposed compensation it is possible to draw symmetrical and pure active current from all phases. A set of multi-level voltage converters is considered as a compensation device. The paper presents a way of determining the reference currents for the converter in its two branches and proposes a method of controlling the converter so that the active power from the grid is equal to the active load of the load. This methodology is documented by the results of a series of simulations for static and dynamic modes of the system.
{"title":"Analysis of Three-Phase Delta-Connected Converter for Compensation of Unsymmetrical Loads","authors":"Martin Bejvl, P. Šimek, V. Valouch, R. Hauptmann","doi":"10.1109/EPE51172.2020.9269256","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269256","url":null,"abstract":"The paper presents possibilities of compensation of general single-phase load connected to the three-phase grid. The compensation is to ensure a symmetrical and pure active load of the three-phase grid. It is documented that after the proposed compensation it is possible to draw symmetrical and pure active current from all phases. A set of multi-level voltage converters is considered as a compensation device. The paper presents a way of determining the reference currents for the converter in its two branches and proposes a method of controlling the converter so that the active power from the grid is equal to the active load of the load. This methodology is documented by the results of a series of simulations for static and dynamic modes of the system.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"252 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114321860","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}
Pub Date : 2020-10-19DOI: 10.1109/EPE51172.2020.9269276
K. Friedl, R. Schürhuber
This article describes the method for magnetic field evaluation according to Directive 2013/35/EU and the Austrian implementation (VEMF). It focuses on a method using a harmonic factor in order to consider harmonics when evaluating multifrequency fields of energy power systems. The differences in the evaluation, and the use of different methods of consideration of the multi-frequency fields is discussed in detail with an example. The main goal is to find a simple method to prove, that the requirements of Directive 2013/35/EU are fulfilled.
{"title":"Harmonic Factors for Electromagnetic Field Evaluation in Power Systems according to 2013/35/EU","authors":"K. Friedl, R. Schürhuber","doi":"10.1109/EPE51172.2020.9269276","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269276","url":null,"abstract":"This article describes the method for magnetic field evaluation according to Directive 2013/35/EU and the Austrian implementation (VEMF). It focuses on a method using a harmonic factor in order to consider harmonics when evaluating multifrequency fields of energy power systems. The differences in the evaluation, and the use of different methods of consideration of the multi-frequency fields is discussed in detail with an example. The main goal is to find a simple method to prove, that the requirements of Directive 2013/35/EU are fulfilled.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128054250","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}
Pub Date : 2020-10-19DOI: 10.1109/EPE51172.2020.9269241
Famous O. Igbinovia, J. Krupka, P. Hájek, Z. Muller, J. Tlustý
Electricity storage is essential to permitting the advocacy of a purely renewable electricity grid architecture. This will be the utmost resolution for devoting only random renewable electricity resources like wind and solar plants, to only meet utility base load demand of electricity consumers. Electricity storage is one of the key facilitating equipment's for the future purely renewable electricity grid architecture. Which when intelligently controlled using Internet of Renewable Energy (IoRE) has the attributes that will reward both residential/industrial electricity consumers, and electricity utility authorities. Thereby making it possible to initiate new electricity market models and smart management of cities. This write up is influenced with the desire to give perception into the prospective utilization of electricity storage technology in IoRE domain for clean and sustainable smart city implementation.
{"title":"Electricity Storage in Internet of Renewable Energy (IoRE) Domain for Sustainable Smart Cities","authors":"Famous O. Igbinovia, J. Krupka, P. Hájek, Z. Muller, J. Tlustý","doi":"10.1109/EPE51172.2020.9269241","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269241","url":null,"abstract":"Electricity storage is essential to permitting the advocacy of a purely renewable electricity grid architecture. This will be the utmost resolution for devoting only random renewable electricity resources like wind and solar plants, to only meet utility base load demand of electricity consumers. Electricity storage is one of the key facilitating equipment's for the future purely renewable electricity grid architecture. Which when intelligently controlled using Internet of Renewable Energy (IoRE) has the attributes that will reward both residential/industrial electricity consumers, and electricity utility authorities. Thereby making it possible to initiate new electricity market models and smart management of cities. This write up is influenced with the desire to give perception into the prospective utilization of electricity storage technology in IoRE domain for clean and sustainable smart city implementation.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128879483","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}
Pub Date : 2020-10-19DOI: 10.1109/EPE51172.2020.9269216
Václav Mužik, Z. Vostracký
Industrial Internet of Things is one of the opportunities for online state monitoring, effective control and economical profitability of selected systems. The majority of electricity generated in the Czech Republic comes from conventional fossil power plants - 54% in 2018. Same fact applies to heating where approximately 82% of heat in 2018 was generated from fossil fuels. Despite the fact that energy is being saved and the efficiency on the final customer side is improving, our demand of energy is rising. Over the last few years the online measurement of operation parameters plays a big role in performance optimization and energy management. Following article describes an Open source / Matlab IIoT platform used for monitoring and possible optimization of a district heating network in a typical Czech residential district and electrical island operation of a electrical power system.
{"title":"Communication and Intelligent Control in a Power Grid Using Open Source IoT Technology","authors":"Václav Mužik, Z. Vostracký","doi":"10.1109/EPE51172.2020.9269216","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269216","url":null,"abstract":"Industrial Internet of Things is one of the opportunities for online state monitoring, effective control and economical profitability of selected systems. The majority of electricity generated in the Czech Republic comes from conventional fossil power plants - 54% in 2018. Same fact applies to heating where approximately 82% of heat in 2018 was generated from fossil fuels. Despite the fact that energy is being saved and the efficiency on the final customer side is improving, our demand of energy is rising. Over the last few years the online measurement of operation parameters plays a big role in performance optimization and energy management. Following article describes an Open source / Matlab IIoT platform used for monitoring and possible optimization of a district heating network in a typical Czech residential district and electrical island operation of a electrical power system.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133240132","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}
Pub Date : 2020-10-19DOI: 10.1109/EPE51172.2020.9269196
J. Morávek, P. Mastný, Mateus de Paula Ramos Umbelino
The use of Lithium-based batteries is constantly rising in many different applications. They have great energy density and discharge rate, however they are quite sensitive regarding its operational limits. For a safe and efficient use of this type of battery, the use of a battery management system is mandatory. These systems are responsible for constant monitoring the battery and determining whether or not it's in operational conditions. In this paper we analyze data from a commercial Lithium-Ion battery pack that presented malfunctioning and propose a different configuration to avoid it.
{"title":"Design of High Voltage Battery Topology Based on Experience with Integrated BMS Modules","authors":"J. Morávek, P. Mastný, Mateus de Paula Ramos Umbelino","doi":"10.1109/EPE51172.2020.9269196","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269196","url":null,"abstract":"The use of Lithium-based batteries is constantly rising in many different applications. They have great energy density and discharge rate, however they are quite sensitive regarding its operational limits. For a safe and efficient use of this type of battery, the use of a battery management system is mandatory. These systems are responsible for constant monitoring the battery and determining whether or not it's in operational conditions. In this paper we analyze data from a commercial Lithium-Ion battery pack that presented malfunctioning and propose a different configuration to avoid it.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134331713","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}
Pub Date : 2020-10-19DOI: 10.1109/EPE51172.2020.9269170
Kamil Števanka, D. Král, Ondřej Šťastný, R. Holomb, K. Katovský, H. Martins
This paper compares the results of the two experiments with graphite block which has 39 holes drilled into it. In one experiment most of the holes were filled with NaCl and neutron flux density was measured using Au and In activation detectors. During the second experiment, neutron flux density was measured in the graphite prism without any salt. The reaction rates were compared and analysed.
{"title":"Comparison of Neutron Flux Density in Carbon Prism filled with NaCl and Air","authors":"Kamil Števanka, D. Král, Ondřej Šťastný, R. Holomb, K. Katovský, H. Martins","doi":"10.1109/EPE51172.2020.9269170","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269170","url":null,"abstract":"This paper compares the results of the two experiments with graphite block which has 39 holes drilled into it. In one experiment most of the holes were filled with NaCl and neutron flux density was measured using Au and In activation detectors. During the second experiment, neutron flux density was measured in the graphite prism without any salt. The reaction rates were compared and analysed.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132629302","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}
{"title":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","authors":"","doi":"10.1109/epe51172.2020","DOIUrl":"https://doi.org/10.1109/epe51172.2020","url":null,"abstract":"","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125108773","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}
Pub Date : 2020-10-19DOI: 10.1109/EPE51172.2020.9269220
Michal Kozlok, P. Žák
The paper describes the basic principles of illuminance measurement and possibilities of multi-point measurement of light field spatial properties. Based on the research, the description contains three steps of the development of a multi-point cylindrical illuminance sensor and their hardware architectures. The development aims to create a functional prototype that would allow measurement in addition to one scalar quantity of cylindrical illuminance also the prevailing direction of light in one plane in space, symmetrical, diffuse component, and visual appearance indicator calculated from the ratio of horizontal and cylindrical illuminance.
{"title":"Photodetectors for cylindrical illuminance sensor","authors":"Michal Kozlok, P. Žák","doi":"10.1109/EPE51172.2020.9269220","DOIUrl":"https://doi.org/10.1109/EPE51172.2020.9269220","url":null,"abstract":"The paper describes the basic principles of illuminance measurement and possibilities of multi-point measurement of light field spatial properties. Based on the research, the description contains three steps of the development of a multi-point cylindrical illuminance sensor and their hardware architectures. The development aims to create a functional prototype that would allow measurement in addition to one scalar quantity of cylindrical illuminance also the prevailing direction of light in one plane in space, symmetrical, diffuse component, and visual appearance indicator calculated from the ratio of horizontal and cylindrical illuminance.","PeriodicalId":177031,"journal":{"name":"2020 21st International Scientific Conference on Electric Power Engineering (EPE)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116192747","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：