2019 7th International Youth Conference on Energy (IYCE)最新文献_第2页

Analysis of the effects of xenon oscillation on reactor power 氙振荡对反应堆功率影响的分析

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991568

Zs. Tóth, D. Kis

{"title":"Analysis of the effects of xenon oscillation on reactor power","authors":"Zs. Tóth, D. Kis","doi":"10.1109/IYCE45807.2019.8991568","DOIUrl":"https://doi.org/10.1109/IYCE45807.2019.8991568","url":null,"abstract":"Xenon oscillation is an important phenomena at nuclear power plants with great built-in power capacity. In this mechanism the concentration of the xenon nuclei is changing significantly and not evenly depending on time and space during the chain reaction. As the xenon-135 isotope has a remarkable absorption cross section in the thermal zone, it is crucial to take into account its change throughout the whole lifetime of the reactor. Nowadays most of the planned and constructed nuclear power plants have a high built in capacity and an extended reactor zone which means that xenon oscillation is a real I&C problem of the nuclear energy sector. A great example of these kind of investments is the Hungarian Paks II project in which 2 blocks with 1200 MW capacity each are going to be constructed. As a conclusion for granting nuclear safety it is crucial to be able to simulate the processes concerning the xenon isotopes during the reactor lifetime. The main goal of the research is to simulate precisely the change of the xenon concentration and the phenomenon of xenon oscillation in time and place and to create an algorithm which is able to compensate the change of the output power due to xenon oscillation. The applied model is the one- dimensional diffusion equation coupled with the equations regarding the concentration of xenon and iodine isotopes. In the work finite differences method is used to solve this nonlinear differential equation system in Matlab.","PeriodicalId":226881,"journal":{"name":"2019 7th International Youth Conference on Energy (IYCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127625583","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

Simulation of Corona Discharges and Time Domain Examination of their Emitted Electromagnetic Signals 电晕放电模拟及其发射电磁信号的时域检测

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991576

Máté Szirtes, R. Cselkó

{"title":"Simulation of Corona Discharges and Time Domain Examination of their Emitted Electromagnetic Signals","authors":"Máté Szirtes, R. Cselkó","doi":"10.1109/IYCE45807.2019.8991576","DOIUrl":"https://doi.org/10.1109/IYCE45807.2019.8991576","url":null,"abstract":"The goal of this paper is to present the time domain behavior of the emitted electromagnetic signals of corona discharges, and to show the design process of the measured partial discharge (PD) source. After the introduction of the used physical model, finite element simulations were used to determine the optimal needle-plane electrode distance of the sample. Using the chosen distances, an air insulated needle- plane corona discharge source was created. After this, the emitted electromagnetic signals of the chosen arrangements were measured and recorded in a noise-free environment. To test the proper operation of the discharge source, the time domain behavior of the measured signals were examined by visualizing the activity of the emitted corona discharge signals as the function of the phase angle of the AC testing voltage. These created characteristic patterns successfully showed the effect of electrode distance on the physical processes of corona discharges. The results of the emitted measurements were also consistent with theoretical expectations and properly showed the complex physical processes of the AC corona discharge.","PeriodicalId":226881,"journal":{"name":"2019 7th International Youth Conference on Energy (IYCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130334912","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

Sensorless Vector Control of AC Drives 交流驱动器的无传感器矢量控制

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991574

G. Szabó, Fároly Veszprémi

引用次数: 1

Retrofit of the Lighting System in Common Spaces of Buildings 建筑公共空间照明系统的改造

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991580

P. Belány, Marek Novák, Marek Siranec, M. Roch

引用次数: 0

Improving the Reliability of the Transmission and Distribution Network 提高输配电网络的可靠性

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991565

A. Lovrenčič, L. Rácz, G. Göcsei, B. Németh

{"title":"Improving the Reliability of the Transmission and Distribution Network","authors":"A. Lovrenčič, L. Rácz, G. Göcsei, B. Németh","doi":"10.1109/IYCE45807.2019.8991565","DOIUrl":"https://doi.org/10.1109/IYCE45807.2019.8991565","url":null,"abstract":"The transmission and distribution network play a central role in the electricity system. According to this, their operational safety and reliability are highly important due to the continuous availability of electrical energy. Live Working (hereinafter referred to as LW) is a group of activities where line workers work on energized network elements, reducing the number of blackouts and interrupts on the network. However, in the last few years the electricity system has changed, so that new challenges have been appeared for system operators. One of the main goals is to increase the flexibility of the transmission and distribution network while maintaining the reliability level. As a result, new methods such as Dynamic Line Rating (hereinafter referred to as DLR) are being introduced to increase the capacity of transmission lines. In addition to the emergence of new methods, existing technologies also need to be reviewed. The main aim of this article is to present how live line maintenance (LLM) equipment test and technology education were revised, and how DLR method could improve the reliability of the distribution network.","PeriodicalId":226881,"journal":{"name":"2019 7th International Youth Conference on Energy (IYCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126163635","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

Examination of thermal behavior of high voltage conductors 高压导体热性能的检验

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991590

D. Szabó, M. Kovács, B. Németh, M. Bizjak

引用次数: 1

Development of distribution network model in OpenDSS using Matlab and GIS data 利用Matlab和GIS数据在OpenDSS中开发配电网模型

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991604

Mitja Antoncic, Maja Mikec, B. Blazic

引用次数: 0

Complex energy renovation of a single-family house in Slovakia 斯洛伐克单户住宅的复杂能源改造

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991603

Imrich Sánka, D. Petráš

引用次数: 0

Industrial Application of Battery Energy Storage Systems: Peak shaving 电池储能系统的工业应用:调峰

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991594

Bence Bereczki, B. Hartmann, S. Kertész

引用次数: 10

Life Cycle Assessment of 1kW PEMFC system with the focus on critical materials 以关键材料为重点的1kW PEMFC系统生命周期评估

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991589

R. Stropnik, M. Sekavčnik, Andrej Lorrič, M. Mori

{"title":"Life Cycle Assessment of 1kW PEMFC system with the focus on critical materials","authors":"R. Stropnik, M. Sekavčnik, Andrej Lorrič, M. Mori","doi":"10.1109/IYCE45807.2019.8991589","DOIUrl":"https://doi.org/10.1109/IYCE45807.2019.8991589","url":null,"abstract":"Fuel cell and hydrogen (FCH) technologies are expected to add to decarbonisation of energy and transport sector. One thing that prevents FCH commercialization is lack of recycling and dismantling strategies, due to not available lists of critical materials. One of the considered FCH technologies within the EU funded HyTechCycling project is polymer electrolyte membrane fuel cell (PEMFC), which is the focus of this paper. One of the goals of EU project HyTechCycling is to carry out a Life Cycle Assessment (LCA) of PEMFC technology. Main focus of this paper is to gather and properly set all the data needed for LCA study of the PEMFC system. First the PEMFC was broken down to core components to identify all materials constituting the PEMFC components. For PEMFC the LCA numerical model was done in GaBi Thinkstep software. In first part of the paper the list of common PEMFC materials were identified. Furthermore with this list of materials a LCA study for 1kW PEMFC system was done. The scope of the study was “cradle to gate” with four different scenarios of hydrogen production and 20,000 h of operation. For environmental impact assessment the CML2001 life cycle impact assessment (LCIA) methodology was used. LCA results of 1kW PEMFC system shows that in manufacturing phase the stack contributes 60-90% in total environmental impacts and the BoP components are in range of 10-20%. In operation phase the hydrogen production with electrolysis using hydroelectricity and natural gas reforming are scenarios with lowest environmental impacts. The platinum group metals (PGM's), among which Pt is standing out the most, are the biggest contributors in the total environmental impact in the manufacturing phase of 1 kW PEMFC system. Therefore, on average 61% reduction in environmental impacts can be achieved with an assumption of 95% recycling of Pt.","PeriodicalId":226881,"journal":{"name":"2019 7th International Youth Conference on Energy (IYCE)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127311158","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