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2022 IEEE 7th International Energy Conference (ENERGYCON)最新文献

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Shunt active power filter based on flying capacitor multilevel inverter for harmonic mitigation 基于飞电容多电平逆变器的并联有源电力滤波器谐波抑制
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830346
Sana Othman, L. Sbita, J. Barbot, M. Alali, M. Ghanes
Power electronic systems offer highly nonlinear characteristics. In order to overcome this problem, a recent topology of three-phase shunt active power filter (SAPF) based on flying capacitor multilevel inverter (FCMI) is developed. This research study is aimed to improve the power quality by compensating harmonics and reactive power required by a nonlinear load. Simulation results of our proposed topology compared With the classical one are given to demonstrate that the use of the FCMI enhances the system performances. In fact, the power quality is improved with a minimum switching losses and the total harmonic distortion of the grid-side current is reduced to a value that satisfying the IEEE standard limits.
电力电子系统具有高度非线性的特性。为了克服这一问题,提出了一种基于飞电容多电平逆变器(FCMI)的三相并联有源电力滤波器(SAPF)拓扑结构。本研究旨在通过补偿非线性负载所需的谐波和无功功率来改善电能质量。仿真结果表明,本文提出的拓扑结构与传统的拓扑结构相比,提高了系统的性能。实际上,电能质量得到了改善,开关损耗最小,电网侧电流的总谐波失真降低到满足IEEE标准限值的值。
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引用次数: 0
Linear solution of the High-Voltage Transmission Line transient influence problem 高压输电线路暂态影响问题的线性求解
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830260
A. Dolgicers, I. Zālītis, J. Berkolds, J. Kozadajevs
The influence of high-voltage transmission lines on cables with a conductive shield has not been widely studied, especially during transients. In this paper, a lumped parameter model of a transmission line is developed in the Laplace domain in addition to a steady-state model to determine the effect of a free decaying component of a current induced into a fiber-optic cable shield. Numerical inverse Laplace transform and linear circuit theory is combined in a solution applicable to models containing mutual induction and electrostatic links between different conductors. A case study is performed for a steel-shielded fiber-optic cable installed on a 110 kV line, which indicates that the induced current is a significant threat to the cable considered. The demonstrated approach can be used for analysis of the influence of a high-voltage line on any elongated conductive object during transients. The proposed method is well suited for parallel computing due to linear nature of equation systems used.
高压输电线路对带导电屏蔽电缆的影响还没有得到广泛的研究,特别是在瞬变过程中。本文除了建立稳态模型外,还在拉普拉斯域建立了传输线的集总参数模型,以确定诱导到光缆屏蔽层的电流的自由衰减分量的影响。将数值拉普拉斯逆变换与线性电路理论相结合,得到了适用于不同导体间含有互感和静电连接的模型的解。对安装在110kv线路上的钢屏蔽光缆进行了实例研究,表明感应电流对所考虑的光缆构成了重大威胁。所演示的方法可用于分析高压线路在瞬变过程中对任何细长导电物体的影响。由于所使用的方程组的线性性质,所提出的方法非常适合于并行计算。
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引用次数: 0
Interference of Household Devices on Broadband Power Line Communication in German Smart Grids 德国智能电网中家用设备对宽带电力线通信的干扰
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830268
Tom Steffen, M. Peikenkamp, Hanko Ipach, Matthias N. Lorenz, D. Babazadeh, C. Becker
Broadband Power Line Communication is the network operator’s choice for cost efficient smart metering in German smart grid applications. This is due to comparably high data rate and low latency, yielding the possibility to work with state of the art protocols requiring quasi real time transmission of data. However, due to disadvantageous hardware components, such as unshielded power lines, communication in low voltage grids is a difficult task. Consequently, further interferences, for example from household devices, play an important role in terms of availability and quality of service in those communication systems. In this paper, an innovative concept for detecting and measuring the interference of common household devices on the power line communication is presented. The concept consists of two parts identification and recognition as well as rating of interferences, offering the possiblity to draw conclusions about the quality of service in power line communication based smart meter applications by the detection of the load. This concept has been applied for the first time in a field trail on the premises of the Schleswig-Holstein Netz AG in North of Germany. The results are evaluated and presented in this paper.
宽带电力线通信是网络运营商在德国智能电网应用中经济高效的智能计量的选择。这是由于相对较高的数据速率和较低的延迟,从而产生了使用需要准实时数据传输的最先进协议的可能性。然而,由于不利的硬件组件,如未屏蔽的电源线,在低压电网中通信是一项艰巨的任务。因此,进一步的干扰,例如来自家庭设备的干扰,在这些通信系统的服务可用性和质量方面起着重要作用。本文提出了一种检测和测量普通家用设备对电力线通信干扰的创新方法。该概念由两部分组成,即识别和识别干扰以及对干扰进行评级,从而可以通过检测负载来得出基于电力线通信的智能电表应用中的服务质量结论。这一概念首次在德国北部石勒苏益格-荷尔斯泰因Netz公司的现场试验中得到应用。本文对结果进行了评价和介绍。
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引用次数: 0
Minimizing the impact of losses on MPP tracking of PVs under shading conditions 尽量减少损失对遮阳条件下pv MPP跟踪的影响
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830441
Zaint A. Alexakis, A. Alexandridis
Certain PV system parameters such as residual losses, are either neglected or assumed as trivial when their dynamics are studied. Even though this may be the case in some approaches, it is proven that residual losses heavily influence the system operation, especially when tackling the problem of locating the maximum power point (MPP) under normal and partial shading irradiance conditions. Particularly, analytic formulas pertaining the mentioned losses are derived in this paper and their effect on MPP tracking is investigated. As losses are greatly affected by the current flowing through the respective element, they can be minimized through optimization techniques. However, both, the issue of minimizing the residual losses and that of tracking the operating condition at MPP, is proposed to be combined into a unique optimization problem. It is important that the combined optimization approach is especially efficient in the case when more than one local maximum exist as happens in partial shading irradiance conditions. The whole analysis and the proposed optimization technique is evaluated under normal and adverse irradiation conditions whereas the simulation results totally verify the validity of the method.
光伏系统的某些参数,如剩余损耗,在研究其动力学时要么被忽略,要么被认为是微不足道的。尽管在某些方法中可能存在这种情况,但事实证明,残余损耗严重影响系统运行,特别是在处理在正常和部分遮光照射条件下定位最大功率点(MPP)的问题时。特别地,本文推导了上述损耗的解析公式,并研究了它们对MPP跟踪的影响。由于损耗受流经各元件的电流的影响很大,因此可以通过优化技术使损耗最小化。然而,最小化剩余损失和跟踪MPP运行状态这两个问题,被建议合并为一个独特的优化问题。重要的是,当存在多个局部最大值时,如在部分遮阳辐照条件下,组合优化方法特别有效。在正常和不良辐照条件下对整个分析和优化技术进行了评估,仿真结果完全验证了该方法的有效性。
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引用次数: 0
Enhancement of Finite Set Model Predictive Control for Direct Matrix Converter fed DFIG-Wind Energy Conversion System 直接矩阵变换器馈电dfig -风能转换系统有限集模型预测控制的改进
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830152
Elkssayer Mohamed Khalil, Naoui Mohamed, Hajjej Mohamed, Sbita Lassad
This paper deals with the study of finite set model predictive current control (FS-MPC) for doubly fed induction generator (DFIG) derived by direct matrix converter (DMC). The FS-MPC has proven it effectiveness in many power applications. This control technique possess a small steady state error in different operating conditions, a high sensitivity and fast dynamic response, and it can be applied in both linear and nonlinear systems. In the other hand, the frailty of this method consists of parameter mismatches which affect mathematical model. To overcome this problem, we propose to add past errors of rotor current to the cost function and adjust the weighting factors of the cost function with fuzzy decision making approach (FDM). The MATLAB/Simulink tool is used to evaluate the performance of this system in various scenarios.
本文研究了由直接矩阵变换器(DMC)导出的双馈感应发电机(DFIG)的有限集模型预测电流控制(FS-MPC)。FS-MPC已经在许多电源应用中证明了它的有效性。该控制技术在不同工况下具有稳态误差小、灵敏度高、动态响应快等特点,可应用于线性和非线性系统。另一方面,该方法的弱点在于参数不匹配会影响数学模型。为了克服这一问题,我们提出在代价函数中加入转子电流的过去误差,并用模糊决策方法(FDM)调整代价函数的权重因子。利用MATLAB/Simulink工具对该系统在各种场景下的性能进行了评估。
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引用次数: 1
Modeling of an Active Household under Different Tariffs 不同资费下的活跃家庭模型
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830173
P. Miljan, M. Miletić, H. Pandžić
Human society increasingly values energy efficiency and savings in energy consumption. In line With this, smart homes are receiving an increased attention because of their potential for a more efficient utilization of electric devices by the means of demand response (DR) programs. This paper presents a mixed-integer linear programming model of a household that contains all relevant appliances with the DR potential. For controllable appliances, real load profiles logged in the Demand Response Laboratory at the University of Zagreb Faculty of Electrical Engineering and Computing Were used, while the K-means technique was used to cluster the representative days. The developed model is used to analyze possible savings in electricity costs under different tariff designs.
人类社会越来越重视能源效率和节约能源消耗。与此相一致,智能家居正受到越来越多的关注,因为它们有可能通过需求响应(DR)程序更有效地利用电子设备。本文提出了一个包含所有具有DR势的相关电器的家庭的混合整数线性规划模型。对于可控电器,使用了萨格勒布大学电气工程与计算学院需求响应实验室记录的真实负载概况,同时使用K-means技术对具有代表性的日子进行聚类。所建立的模型用于分析在不同的电价设计下可能节约的电力成本。
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引用次数: 0
A Trust Model in Control Systems to Enhance and Support Cybersecurity 控制系统中增强和支持网络安全的信任模型
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830327
B. Siemers, Lars Fischer, S. Lehnhoff
At present, evolving power systems are in want of mechanisms to collect information on current security state. The evolution of the ongoing energy transition reveals some critical limitations regarding cybersecurity standards in the energy sector. Implementing new and untested technology could harm the entire security but is often superseded in favor of its needed technology and functionality. This could lead to unforeseeable security issues. To manage these, innovations are required to orchestrate information while supporting the operator in keeping an overview of the security status. One way to condense security information is to use a trust model to correlate the relevant information and provide human interpretative information. A trust model can provide a feasible solution - it helps identify the root cause of potential vulnerabilities in the system to bridge the gap between vulnerabilities, countermeasures and new technology. This paper proposes a new approach for a trust model to strengthen and expand security in energy systems. The trust model will collect and interpret existing (security) information into so-called trust facets. It will facilitate the identification of vulnerabilities of the cyber physical energy system (CPES) through the concept of tracing. The objective is to create a security tool as a supportive and additional system to help operators interpret the security state in complex systems. This paper introduces an approach to enhance security of industrial control systems (ICS) in CPES in the context of trust and integrate tracing into the trust model.
目前,不断发展的电力系统需要建立安全状态信息收集机制。正在进行的能源转型的演变揭示了能源部门网络安全标准的一些关键限制。实现新的和未经测试的技术可能会损害整个安全性,但通常会被其所需的技术和功能所取代。这可能导致不可预见的安全问题。为了管理这些问题,需要创新来编排信息,同时支持运营商保持对安全状态的概述。压缩安全信息的一种方法是使用信任模型来关联相关信息并提供人工解释信息。信任模型可以提供一个可行的解决方案——它有助于识别系统中潜在漏洞的根本原因,从而弥合漏洞、对策和新技术之间的差距。本文提出了一种增强和扩展能源系统安全性的信任模型的新方法。信任模型将收集现有(安全)信息并将其解释为所谓的信任方面。它将通过跟踪的概念促进网络物理能源系统(CPES)漏洞的识别。目标是创建一种安全工具,作为辅助和附加系统,帮助操作人员解释复杂系统中的安全状态。本文介绍了一种在信任环境下提高CPES工业控制系统安全性的方法,并将跟踪集成到信任模型中。
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引用次数: 0
Development of an Online Course for «Web Programming» discipline with OLAT 使用OLAT开发«Web编程»学科在线课程
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830247
A. Kintonova, A. Sabitov, I. Povkhan
This paper describes the technologies for organizing online courses, provides a brief analysis of technologies for organizing online courses. The paper describes the technology for creating an online course «Web programming» using OLAT.The course was developed at web application OLAT - Online Learning and Training. The course consists of theoretical resources and practical elements, allowing the author to create own course, set the time frame for the course, indicate the certain measure and evaluate the student’s work according to the passed course. The article shows the technology of online course implementation with OLAT. These technologies allow you to automatically form an individual learning path based on the analysis of students’ knowledge.
本文介绍了网络课程组织技术,对网络课程组织技术进行了简要分析。本文介绍了利用OLAT创建在线课程《Web编程》的技术。该课程是在网络应用程序OLAT(在线学习和培训)上开发的。该课程由理论资源和实践元素相结合,允许作者自行创建课程,设定课程时间框架,指示一定的措施,并根据通过的课程对学生的工作进行评价。本文介绍了利用OLAT实现在线课程的技术。这些技术使您能够根据对学生知识的分析自动形成个人学习路径。
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引用次数: 1
Modeling and Dynamic Simulation of Voltage Fluctuations in Low-Voltage Grids and Validation Using Field Test Data 低压电网电压波动建模与动态仿真及现场试验数据验证
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830479
F. Gielnik, Samuel Eichhorn, S. de Jongh, Alexander Bisseling, M. Suriyah, T. Leibfried
Climate targets of the European Union necessitate a new approach to electrical power generation and distribution. The requirements for low-voltage (LV) grids are changing due to the distributed generation of electrical energy as a consequence of the decarbonization of the energy and mobility sectors. However, photovoltaic systems and charging stations for electric vehicles are often connected with a single-phase to the three-phase LV grid, which is commonly constructed with asymmetrical cables. In order to represent both the asymmetric cable characteristics and the load conditions, it is necessary for detailed modeling to consider distribution grids as asymmetrical. The aim of this work is to provide accurate distribution grid models which can be used to simulate the dynamic behavior of a real LV grid. Finally, the presented analytical model is validated by field test data.
欧盟的气候目标需要一种新的发电和配电方法。由于能源和移动部门的脱碳,分布式发电正在改变对低压(LV)电网的要求。然而,光伏系统和电动汽车充电站通常通过单相到三相低压电网连接,该电网通常由不对称电缆构成。为了既能反映电缆的非对称特性,又能反映负荷状况,有必要将配电网考虑为非对称,进行详细的建模。本工作的目的是提供准确的配电网模型,用于模拟实际低压电网的动态行为。最后,通过现场试验数据对分析模型进行了验证。
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引用次数: 1
Hands-on Education in using Process Bus for Digital Substation Automation Systems, based on IEC 61850–9–2LE 实践教育使用数字化变电站自动化系统的过程总线,基于IEC 61850-9-2LE
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830313
Nicklas Scheel, Ulrik Andersen, P. Randewijk
This paper introduces simple experiments on how to implement, test and evaluate “sampled measured values” in basic power system protection, automation and control education at undergraduate level. The focus is on basic system configuration and the use of commercially available measurement and testing solutions to illustrate the simplicity of using process bus. One of the outcomes of these experiments is to emphasize that in spite of the perceived complexity of using process bus, it is in fact simpler than the conventional approach.
本文介绍了在本科电力系统保护、自动化与控制基础教育中如何实现、测试和评估“采样测量值”的简单实验。重点是基本的系统配置和商业上可用的测量和测试解决方案的使用,以说明使用过程总线的简单性。这些实验的结果之一是强调,尽管使用流程总线看起来很复杂,但实际上它比传统方法更简单。
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引用次数: 0
期刊
2022 IEEE 7th International Energy Conference (ENERGYCON)
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