2019 7th International Youth Conference on Energy (IYCE)最新文献_第4页

Design and Analysis of a Novel Solar Driven Multigeneration System for Providing Energy Requirement of A Building 一种满足建筑能源需求的新型太阳能发电系统的设计与分析

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991593

Sevgi Erzen, E. Açıkkalp, A. Hepbasli

引用次数: 0

Autonomous Demand Side Management of Electric Vehicles in a Distribution Grid 配电网中电动汽车自主需求侧管理

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991564

M. Ireshika, M. Preißinger, P. Kepplinger

{"title":"Autonomous Demand Side Management of Electric Vehicles in a Distribution Grid","authors":"M. Ireshika, M. Preißinger, P. Kepplinger","doi":"10.1109/IYCE45807.2019.8991564","DOIUrl":"https://doi.org/10.1109/IYCE45807.2019.8991564","url":null,"abstract":"The electricity demand due to the increasing number of EVs presents new challenges for the operation of the electricity network, especially for the distribution grids. The existing grid infrastructure may not be sufficient to meet the new demands imposed by the integration of EVs. Thus, EV charging may possibly lead to reliability and stability issues, especially during the peak demand periods. Demand side management (DSM) is a potential and promising approach for mitigation of the resulting impacts. In this work, we developed an autonomous DSM strategy for optimal charging of EVs to minimize the charging cost and we conducted a simulation study to evaluate the impacts to the grid operation. The proposed approach only requires a one way communicated incentive. Real profiles from an Austrian study on mobility behavior are used to simulate the usage of the EVs. Furthermore, real smart meter data are used to simulate the household base load profiles and a real low voltage grid topology is considered in the load flow simulation. Day-ahead electricity stock market prices are used as the incentive to drive the optimization. The results for the optimum charging strategy is determined and compared to uncontrolled EV charging. The results for the optimum charging strategy show a potential cost saving of about 30.8% compared to uncontrolled EV charging. Although autonomous DSM of EVs achieves a shift of load as pursued, distribution grid operation may be substantially affected by it. We show that in the case of real time price driven operation, voltage drops and elevated peak to average powers result from the coincident charging of vehicles during favourable time slots.","PeriodicalId":226881,"journal":{"name":"2019 7th International Youth Conference on Energy (IYCE)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128056870","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: 9

Utilization of the storage systems in a distribution system to balance the consumption 配电系统中为平衡用电而使用的存储系统

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991561

D. Motyka, Martina Kajanová, P. Braciník, Marian Tomasov, M. Roch

{"title":"Utilization of the storage systems in a distribution system to balance the consumption","authors":"D. Motyka, Martina Kajanová, P. Braciník, Marian Tomasov, M. Roch","doi":"10.1109/IYCE45807.2019.8991561","DOIUrl":"https://doi.org/10.1109/IYCE45807.2019.8991561","url":null,"abstract":"The utilization of the electricity storage into batteries system is increasing. Most batteries are connected at the point in the network where the power of renewable energy sources is produced. These battery storage systems serve primarily to power electricity to households. They are most often used in cooperation with renewable energy sources, especially photovoltaic power plants. When installing renewable sources without using battery storage in distribution networks, there are several problems in the production of electricity from renewable sources. At a time of low power consumption and high electricity generation at the point of connection of renewable energy sources, a change in power flow occurs. The power generated from the sources flows into the distribution network or up to the superior network. If a distribution company installed battery storage at the point of connection, the power from renewable sources would not flow to the rest of the distribution system and would be stored on that distribution network node. Once the capacity size has been correctly determined at a given node, the distribution company could benefit from such solution. The distribution company could lease the capacity of the batteries to customers who have the renewable energy sources to store their produced energy or could cover part of the electricity consumption at the time of lack of production from the renewable energy sources. The paper deals with this issue, the location of battery storage is simulated on a standardized distribution network.","PeriodicalId":226881,"journal":{"name":"2019 7th International Youth Conference on Energy (IYCE)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123272819","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

Study about the price limit of RES orders 研究RES订单的价格限制

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991557

P. Barta, D. Divényi

{"title":"Study about the price limit of RES orders","authors":"P. Barta, D. Divényi","doi":"10.1109/IYCE45807.2019.8991557","DOIUrl":"https://doi.org/10.1109/IYCE45807.2019.8991557","url":null,"abstract":"Supporting renewable energy sources is currently a widely discussed issue. To ensure the pay-off from the application of renewable energy technologies in Hungary, a feed-in-tariff supporting system has been created applying obligatory offtake. It means that the Hungarian TSO has to buy the energy from the producer at a definite price. TSO sells the energy on the day-ahead market and on the intraday market, but this paper focuses only the day-ahead. In general the market clearing price (MCP) is lower than this definite price so the TSO sells the energy at a loss. According to governmental regulations the TSO must be neither profitable nor loss-making so this deficit is allocated to the industrial customers. Limit price is one of the many regulations pertaining to the trading the Hungarian Power Exchange (HUPX DAM) meaning the energy cannot be sold when the MCP is lower than the limit price. If the energy cannot be sold, the TSO will face with high balancing costs. The aim of this paper is to find a way to minimize balancing costs and the amount of balancing energy, either by the modification the limit price or by giving a price-taker offer. Although the KAT system was discontinued on 31 December 2016, the contracted producers still remained within the framework. The authority approved 2000 MW capacity to build in, giving actuality to the topic.","PeriodicalId":226881,"journal":{"name":"2019 7th International Youth Conference on Energy (IYCE)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121780033","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

Future level of distribution system operator's involvement in spread of microgrid technologies: a review 未来配电系统运营商参与微电网技术推广的水平:综述

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991579

I. Vokony, B. Hartmann, C. Farkas, J. Kiss, P. Sőrés

引用次数: 0

Problems Evoked by The Integration of Renewables as Parts of Building Energy Management Systems 可再生能源作为建筑能源管理系统组成部分的整合所引起的问题

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991578

László Oltványi, Z. Tóth

{"title":"Problems Evoked by The Integration of Renewables as Parts of Building Energy Management Systems","authors":"László Oltványi, Z. Tóth","doi":"10.1109/IYCE45807.2019.8991578","DOIUrl":"https://doi.org/10.1109/IYCE45807.2019.8991578","url":null,"abstract":"Nowadays, the search for optimal realization of how to get disconnected from the power grid has become a trend. There has been a great variety of solutions revealed which operate as completely [1], [2] or partly [3] “off-grid” systems. In the future, the assurance of proper energy management, power quality and dependability will be a key question in the operation of these networks. When considering different environment-friendly energy sources for this purpose, we cannot leave out the implementation of an energy storing utility in order to straighten out the differences in the daily energy production and demand [4]. The decrease in prices of energy storing technologies happened over the course of the last decades also matches the evolvement of introducing the upper-mentioned utility. In my paper I will use up- to-date energy data basing my calculations to reveal an energy storing solution capable to balance the energy use of an average household which also serves as energy producer [5]. Apart from the minimization of the downside effects of feeding back into the grid, it is also aimed to provide service continuity and the elimination of voltage fluctuation as the results of electing the adequate energy storage utility and elaborating a supporting building management system [6].","PeriodicalId":226881,"journal":{"name":"2019 7th International Youth Conference on Energy (IYCE)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125359278","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

Exergetic Performance Comparison between Steam-Heated and Closed-Cycle Heat Pump Applications for Lumber-Drying 蒸汽加热热泵与闭式循环热泵在木材干燥中的性能比较

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991582

Sevgi Erzen, E. Açıkkalp, A. Hepbasli

引用次数: 0

Low-Temperature Organic Rankine Cycles Using Natural Working Fluids 低温有机朗肯循环使用天然工作流体

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991558

A. Mihok, A. R. Imre

引用次数: 0

Different Approaches of Dynamic Line Rating Calculations 动态线路额定值计算的不同方法

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991570

L. Rácz, G. Gabor, B. Németh

引用次数: 0

Numerical analysis of biogas combustion in a lean premixed swirl burner 稀薄预混涡流燃烧器中沼气燃烧的数值分析

2019 7th International Youth Conference on Energy (IYCE) Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991563

Dániel Füzesi, V. Józsa

{"title":"Numerical analysis of biogas combustion in a lean premixed swirl burner","authors":"Dániel Füzesi, V. Józsa","doi":"10.1109/IYCE45807.2019.8991563","DOIUrl":"https://doi.org/10.1109/IYCE45807.2019.8991563","url":null,"abstract":"Modern combustion technology focuses on lean premixed burners to achieve high thermal efficiency, wide operating range, and low pollutant emissions for steady-state operation. The corresponding applications range from boilers to gas turbines. The present paper is a preliminary analysis of a turbulent laboratory test burner with 30 kW combustion power by using CFD. The reference fuel was natural gas and four biogases were tested which were modeled as a mixture of CH4, CO2, and H2 in various compositions. Even though the combustion is steady, the steady solution was inappropriate due to the notable presence of unsteady flow structures. Since the combustion in the present case is dominated by volumetric reactions, a coarse boundary layer could be applied near the wall. However, the shear-dominated flow required the use of at least k-ω SST turbulent viscosity model. The transient cases were calculated by using Scale Adaptive Simulation. Among the fuels, natural gas combustion showed flashback due to the bluff body present at the center in the mixing tube inlet. Nevertheless, its extent was low and some central purge air in the real burner will solve this problem. All the flame shapes were V and W, meaning an optimal condition for combustion chamber loading. Even though the overall mass flow rates at the inlet are increasing with the decreasing heating value of the fuel, natural gas combustion showed the highest velocity and temperature in the flow field. Overall, a small hydrogen dilution of the CH4-CO2 containing fuel acted as an excellent combustion stabilizer without flashback or too intense heat release rate. As a consequence, the presently analyzed burner can run on low calorific value fuels without design modifications or exposing locally high thermal load on the combustion chamber. Since it is an initial study, validation and the evaluation of practical relevance will be discussed in subsequent works.","PeriodicalId":226881,"journal":{"name":"2019 7th International Youth Conference on Energy (IYCE)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133674674","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