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2019 7th International Youth Conference on Energy (IYCE)最新文献

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Modern information technologies in heat and power calculations 热电计算中的现代信息技术
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991600
A. T. Y. Tun, V. Ochkov, K. A. Orlov, V. E. Znamensky
The report summarizes the experience of the national research University “MPEI” on information support of the design and operation of thermal power equipment. Created and opened in the Internet site with the functions returning thermodynamic properties of working substances and heat transfer of thermal energy. Developed by the innovative technology of “cloud” functions of properties of working substances and heat transfer of thermal energy, which can be used in heat engineering calculations of which makes reference to the “cloud” function. A website with open, interactive, network and certified calculations of processes, devices and technologies used in heat power engineering has been developed and opened on the Internet. These calculations provide an opportunity to see all intermediate results of calculations. An atlas of heat and power equipment, a gallery of videos related to the operation and maintenance of heat and power equipment, as well as a program to check the knowledge of technological schemes of heat and power equipment have been created.
报告总结了国家研究型大学“MPEI”在火电设备设计和运行信息支持方面的经验。创建并在互联网上开放,具有返回工质热力学性质和热能传热的功能。通过对工质性质和热能传热的“云”函数的创新技术开发,可用于热工计算,其中参考了“云”函数。开发并在互联网上开放了一个开放、互动、网络化和认证的热电工程过程、设备和技术计算网站。这些计算提供了查看所有计算中间结果的机会。编制了热电设备图集、热电设备运行维护视频图集和热电设备技术方案知识考核项目。
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引用次数: 0
Economic investigation of CHP system in a multifunctional building 某多功能建筑热电联产系统经济性研究
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991562
Kristóf Gyula Pap, P. Bihari
Both consumer demand and network connectivity options determine what kind of energy system is required for a consumer. The construction of a decentralized energy system can have technical and economic reasons. It may be a technical reason that the consumer requires that are not available by connecting to a wired network. If a consumer decides to install his own power generating unit and becomes a “prosumer”, a preliminary technical and economic analysis of it is necessary. The design of the system, as well as the most optimal operating strategy for the system, must be determined during the technical examination. During my research, a simple unit cost analysis of a cogeneration system was performed. The aim of the research is to determine the costs of both electricity and heat production, and then to draw economic conclusions in comparison with the fixed tariffs. In the course of the examinations, I also discuss the role of the investment and operating costs of the unit costs. Possible economic planning principles are determined for combined heat and power gas engine unit.
消费者需求和网络连接选项决定了消费者需要什么样的能源系统。分散式能源系统的建设有其技术和经济上的原因。这可能是由于技术原因,消费者需要连接到有线网络时无法使用。如果消费者决定安装自己的发电机组,成为“产消者”,则有必要对其进行初步的技术经济分析。系统的设计,以及系统的最优运行策略,必须在技术审查中确定。在我的研究中,对热电联产系统进行了简单的单位成本分析。这项研究的目的是确定电力和热能生产的成本,然后得出与固定电价相比的经济结论。在考试的过程中,我还讨论了单位成本的投资和运营成本的作用。确定了热电联产燃气机组可能的经济性规划原则。
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引用次数: 0
Transient Analysis in Complex Automotive High Voltage Systems 复杂汽车高压系统的暂态分析
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991585
Jozsef Gabor Pazmany, Klaus Rechberger, B. Bäker
Electrical transients are present in the high-voltage (HV) supply systems of battery electric vehicles (BEV), which is an integrated LVDC power system. In these systems, transients challenge the vehicle developer, in terms of their impact on the protection, measurement and the communication systems. A transient occurs while connecting a vehicle to the infrastructure at the beginning of a charging procedure. In this paper, a summary of the effects of voltage and current transients on the automotive HV supply systems is shown. A detailed system level modelling approach is provided to examine the electric transients on automotive HV-systems. The critical design and integration challenges are analysed with respect to reliable and stable operation. Furthermore, the relevant electrical characteristics on device and system level are evaluated to guarantee the safe and stable operation of the automotive HV supply systems. Validation is conducted on MATLAB/Simulink/Simscape models and on prototype vehicles.
纯电动汽车(BEV)高压供电系统是一个集成的LVDC供电系统,存在着电力瞬变现象。在这些系统中,暂态对车辆的保护、测量和通信系统的影响给车辆开发人员带来了挑战。在充电过程开始时,将车辆连接到基础设施时发生瞬态。本文综述了电压和电流暂态对汽车高压供电系统的影响。提供了一种详细的系统级建模方法来研究汽车高压系统的电瞬变。分析了在可靠稳定运行方面的关键设计和集成挑战。在此基础上,从装置和系统层面对相关电气特性进行了评价,保证了汽车高压供电系统的安全稳定运行。在MATLAB/Simulink/Simscape模型和原型车上进行验证。
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引用次数: 0
One-Dimensional Modelling of Piezo-Structure Interaction for DeBonding Configuration using Electro-Mechanical Impedance (EMI) Techniques 基于机电阻抗(EMI)技术的脱粘态压电结构相互作用的一维建模
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991595
S. Moharana, D. S
For electro-mechanical impedance (EMI) technique based Structural Health Monitoring (SHM), the piezo ceramic patches are employed with adhesive bond to evaluate and diagnose the host structure to be monitored. The adhesive bond forms a definite layer for force transmission between the patch and host structure. The mechanical and geometrical properties of the adhesive bond layer has significant effect on the overall performance of the PZT-structure interaction. This paper represents the effect geometrical deformation bonding area in the coupled admittance signature through mathematical modelling. The debonding effect has modelled for piezo elasto- dynamic system. In this paper, the mathematical modelling for 1D piezo elastic structure for debonding case and the results are compared with perfect bonding and definite bonding of adhesive bond for PZT-Structure interaction. The paper also studied parametric variation of bond parameter to examine the influence on the EMI based structural signature.
基于电磁阻抗(EMI)技术的结构健康监测(SHM),采用压电陶瓷贴片与粘接结合的方法对被监测主体结构进行评估和诊断。粘合剂在贴片和主体结构之间形成一定的力传递层。粘接层的力学和几何性能对pzt -结构相互作用的整体性能有显著影响。本文通过数学建模,阐述了几何变形结合面积对耦合导纳信号的影响。建立了压电弹性动力系统的脱粘效应模型。本文建立了一维压电弹性结构脱粘情况下的数学模型,并与PZT-Structure相互作用的完全粘接和确定粘接结果进行了比较。本文还研究了键参数的变化对基于电磁干扰的结构特征的影响。
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引用次数: 0
The feasibility of a new waste incineration plant in Hungary 匈牙利新建垃圾焚烧厂的可行性
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991591
L. Gergely, G. Györke
The amount of waste deposed creates issues both in Hungary and worldwide. The tendencies of the past and present are getting more and more notable from not only the perspective of environmental protection but energetics as well. In order to handle the situation the EU came up with regulations and directives. Waste incineration (as a commonly applied waste to energy method) provides an adequate alternative as presented in a SWOT analysis. Using the information revealed, dioxin and carbon dioxide emissions are observed. The former is compared with cigarette smoking, the latter with the emission of gas fueled heating systems in Hungarian households. The essay also determines a gate fee for a concept waste incineration plant in Budapest that would guarantee a net present value equaling zero for the end of the lifetime.
倾倒的垃圾数量在匈牙利和全世界都造成了问题。无论是从环境保护的角度,还是从能源学的角度来看,过去和现在的趋势都越来越明显。为了处理这种情况,欧盟出台了法规和指令。垃圾焚烧(作为一种常用的废物转化为能源的方法)提供了一个充分的替代方案,如SWOT分析所示。利用披露的信息,观察二恶英和二氧化碳的排放。前者与吸烟相比,后者与匈牙利家庭中燃气供暖系统的排放相比。这篇文章还确定了布达佩斯概念垃圾焚烧厂的入场费,这将保证净现值在生命周期结束时等于零。
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引用次数: 0
Recovery of waste heat from the sewer system in the sanitary equipment of a sport complex 体育场馆卫生设备下水道系统余热的回收
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991596
Dominika Juhošová, J. Peráčková, Milan Krafčik
In the paper we introduced the possibilities of the recovery of waste heat from the sewer system as an answer to the minimalism of the demand of energy needed for the preparation of domestic hot water. The method of recovery of waste heat from the sewer system outside of the building is using a heat pump in combination of heat exchanger located in sewer system outside of the building - this systems are analyzed in the paper from the theoretical point of view. The recovery of waste heat from sewer system inside of the building is possible using heat exchangers in order to extract heat from waste water to direct preheating of cold water - this systems are analyzed from the theoretical point of view, are applied in the sanitary equipment of a sport complex and are evaluated from the energy and economical point of view. For both outdoor and indoor systems, there are several examples of heat exchangers currently used for recovering heat from waste water. The other part of the paper was dedicated to design of alternative solutions of the recovery of waste heat from the sewer system inside of the object of multifunction sport with application of heat exchangers to direct preheating of cold water in shower. The main point of this article was to introduce the possibilities of the recovery of waste heat from the sewer system, apply them in the object of multifunction sport complex and review the energy and economic efficiency and payback period of the heat exchanger.
在本文中,我们介绍了从下水道系统回收废热的可能性,作为对制备生活热水所需能源需求最小化的回答。利用热泵与设在建筑外排污系统的换热器相结合的方式回收建筑外排污系统的余热,本文从理论角度对该系统进行了分析。利用热交换器从废水中提取热量来直接预热冷水,可以回收建筑内部下水道系统的废热。从理论角度分析了该系统,并将其应用于体育场馆的卫生设备中,并从能源和经济角度对其进行了评估。对于室外和室内系统,目前有几个热交换器用于从废水中回收热量的例子。论文的另一部分致力于设计多功能运动对象内部下水道系统余热回收的替代解决方案,应用热交换器直接预热淋浴冷水。本文主要介绍了污水系统余热回收的可能性及其在多功能体育综合体中的应用,并对换热器的能源经济性和投资回收期进行了综述。
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引用次数: 2
An Investigation into the Application of Biefeld Brown Effect on Flight 比菲尔德布朗效应在飞行中的应用研究
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991554
C. Lawrence, W. Phipps
It has been previously demonstrated that thrust can be produced in asymmetrical capacitor configurations when exposed to high voltage in what is known as the Biefeld-Brown effect. One example of such a device that utilises this effect is called an ionic flyer. The device has no moving parts, no combustion emissions and near silent. The Biefeld-Brown effect causes the flyer to be able to float in the air. The thrust that causes the device to float is created by the application of high voltage dc across a capacitor configuration resulting in an ionic wind, creating a net force from the negative toward the positive terminal. An investigation is undertaken to determine if the Biefeld-Brown effect could be used to create a lifting effect on an aircraft wing and as such aid flight. A model aerofoil wing was tested in a wind tunnel under the application of high voltage dc in order to reproduce the Biefeld-Brown effect. This paper outlines the tests that were conducted in the wind tunnel on a wing aerofoil model, as well as the empirical measurements taken. Results are analysed and arguments presented on the potential benefits of using the Biefeld-Brown effect on fixed wing aircraft.
以前已经证明,当暴露于高电压时,推力可以在不对称电容器配置中产生,即所谓的比菲尔德-布朗效应。这种利用这种效应的装置的一个例子被称为离子飞片。该装置没有活动部件,没有燃烧排放,几乎无声。比菲尔德-布朗效应使飞行者能够漂浮在空中。使器件漂浮的推力是通过在电容器配置上施加高压直流电而产生离子风,从而产生从负极向正极的净力。一项调查正在进行,以确定比菲尔德-布朗效应是否可以用来在飞机机翼上产生升力效应,并以此来辅助飞行。为了重现比菲尔德-布朗效应,在高压直流电的作用下,对机翼模型进行了风洞试验。本文概述了在风洞中对机翼翼型模型进行的试验,以及所采取的经验测量。对结果进行了分析,并提出了在固定翼飞机上使用比菲尔德-布朗效应的潜在效益的论点。
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引用次数: 0
Stability analysis of an Ideal-Transformer-Model interface algorithm 理想-变压器-模型接口算法的稳定性分析
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991575
J. Dolenc, A. Božiček, B. Blazic
The subject addressed in the proposed paper is to define stability conditions of an Ideal Transformer Model interface algorithm used for coupling two real-time simulators. The Ideal Transformer Model algorithm is one of the most straightforward methods for hardware-in-the-loop simulations. Integration of the Ideal Transformer Model into the system does not affect systems impedance characteristics and this is its most prominent advantage. However, specific change of system and load impedance ratio may result into system instability. Furthermore, it is shown that the transition of the system into an unstable state is the consequence of the time-delay between simulators. Time-delay turns out as a disturbance that amplifies an error due to transmission of the voltage signal between the simulators. Taking into account Nyquist stability criterion, three cases with different system and load impedance ratio are presented, first with the simulations in Matlab Simulink and later on with simulations on RT simulators.
本文讨论的主题是定义用于耦合两个实时模拟器的理想变压器模型接口算法的稳定性条件。理想变压器模型算法是硬件在环仿真中最直接的方法之一。将理想变压器模型集成到系统中不会影响系统的阻抗特性,这是其最突出的优点。然而,系统和负载阻抗比的特定变化可能导致系统不稳定。进一步证明了系统进入不稳定状态的转变是模拟器之间的时间延迟的结果。延时是一种干扰,它放大了模拟器之间电压信号传输的误差。考虑Nyquist稳定性判据,给出了三种不同系统和负载阻抗比的情况,分别在Matlab Simulink和RT模拟器上进行了仿真。
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引用次数: 1
Electrical Integrity Tests and Analysis of Low Voltage Photovoltaic Cable Insulation under Thermal Stress 热应力下低压光伏电缆绝缘电气完整性测试与分析
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991556
E. Mustafa, Ramy S. A. Afia, Tamus Zoltán Ádám
In the last decade, photovoltaic power systems have emerged as a leading source of electrical energy. Due to its outdoor installation, it is exposed to all sorts of climatic stresses, such as mechanical, ultraviolet radiation, temperature, and humidity stresses. Safe and reliable operation of the photovoltaic systems is highly dependent on the DC cables installed between the photovoltaic modules and inverters. Since these cables not only carry the load current but are also exposed to the external harsh environment and hence are more vulnerable to degradation. This research has been aimed to study the aging of low voltage photovoltaic DC cables under thermal stress. The cable samples are thermally accelerated aged and the electrical integrity of these cables are studied by the dissipation factor and capacitance measurement in the frequency range of 20 Hz to 500 kHz. The results show that because of aging the dipolar polarization has been affected. Also, the minimum value of the dissipation factor has significantly decreased at lower frequencies, in addition, the shifting of the minimum value of dissipation factor to lower frequency with the aging has also been observed.
在过去的十年里,光伏发电系统已经成为电能的主要来源。由于其安装在室外,它暴露在各种气候应力下,如机械、紫外线辐射、温度和湿度应力。光伏发电系统的安全可靠运行在很大程度上取决于安装在光伏组件和逆变器之间的直流电缆。由于这些电缆不仅承载负载电流,而且还暴露在外部恶劣环境中,因此更容易退化。本研究旨在研究热应力作用下低压光伏直流电缆的老化问题。对电缆样品进行热加速老化,并在20hz ~ 500khz频率范围内通过损耗系数和电容测量对电缆的电气完整性进行了研究。结果表明,由于老化,偶极极化受到影响。在较低的频率下,耗散因子的最小值明显减小,并且随着老化,耗散因子的最小值向较低的频率移动。
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引用次数: 2
Optimal Dispatch Of Active Power Using Classical And Artificial Methods On The Distribution Networks 配电网有功功率的经典与人工优化调度
Pub Date : 2019-07-01 DOI: 10.1109/IYCE45807.2019.8991599
Shohreh Monshizadeh, G. J. Hegglid, Svein Thore Hagan
Optimal power dispatch (OPD) problems has a major role in security and flexibility of power systems. It is useful to enhance the voltage stability, minimization the power losses and improvement of voltage profile. In recent years, several methodologies based on computer algorithms and mathematical formulation have been proposed for solving optimal reactive power dispatch. The techniques are classified based on conventional and intelligent methods. The objective of this paper is minimization the power losses using intelligent algorithms like Particle Swarm Optimization method and conventional method like Newton Raphson. Particle Swarm Optimization (PSO) is based on the simulation the act of group of fishes or birds in searching space for finding optimal solution as the piece of food. The proposed algorithms are analyzed on the Nordic 44 system. The results of simulation show the reduction of total power losses using intelligent method. The proposed methods are tested on Nordic 44 test system, IEEE 9 buses, 14 buses, and 30 buses.
最优电力调度问题对电力系统的安全性和灵活性有着重要的影响。这对提高电压稳定性、减小功率损耗和改善电压分布具有重要意义。近年来,人们提出了几种基于计算机算法和数学公式的方法来求解最优无功调度问题。这些技术分为传统方法和智能方法。本文的目标是利用智能算法如粒子群优化方法和传统方法如Newton Raphson最小化功率损耗。粒子群优化算法(Particle Swarm Optimization, PSO)是将一群鱼或鸟在空间中寻找最优解的行为模拟为一块食物。在Nordic 44系统上对所提出的算法进行了分析。仿真结果表明,采用智能方法可以降低总功耗。在北欧44测试系统、IEEE 9总线、14总线和30总线上进行了测试。
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引用次数: 0
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2019 7th International Youth Conference on Energy (IYCE)
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