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2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)最新文献

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Data Modeling for Renewable Resources and Smart Home using Monte Carlo Simulations 基于蒙特卡罗模拟的可再生资源和智能家居数据建模
Bahman Naghibi
This paper introduces the use of Monte Carlo simulations (MCSs) for modeling stochastic behavior of wind speed, irradiance, temperature, load and electricity rate (ER) as well as the availability of PEV. Two methods are introduced. Probability distributions and their parameters are described in the first method which can be use in the future researches. Second method is introduced for MCS to consider the correlation between different databases and the correlation of each interval value with their prior interval value. Recommendations are provided for the first method in the future studies.
本文介绍了用蒙特卡罗模拟(mcs)来模拟风速、辐照度、温度、负荷和电力率(ER)的随机行为以及PEV的可用性。介绍了两种方法。第一种方法描述了概率分布及其参数,为今后的研究提供了参考。引入了MCS的第二种方法,即考虑不同数据库之间的相关性以及每个区间值与它们之前的区间值的相关性。对第一种方法在今后的研究中提出了建议。
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引用次数: 0
The effect of ambient temperature on the yield of a 3 MWp PV plant installed in Ecuador 环境温度对安装在厄瓜多尔的3mwp光伏电站发电量的影响
A. Cabrera-Tobar, Yasmany Fernández, José Huaca, Marcelo Pozo, O. G. Bellmunt, A. Massi Pavan
The integration of photovoltaic power plants in the distribution or transmission level is already a reality. Usually, the location chosen for these power plants consider high solar irradiance, but the temperature could be a drawback. Thus, the aim of this paper is to show the effect of solar irradiance and ambient temperature on the power generation of a photovoltaic power plant. For this, a real photovoltaic power plant is chosen in the Ecuadorian line in South America. The results show that the active power is reduced around 0.1 to 0.3 p.u when the ambient temperature is higher than 25 Celsius degrees although the solar irradiance is high.
光伏电站在配电或输电层面的一体化已经成为现实。通常,为这些发电厂选择的地点考虑到高太阳辐照度,但温度可能是一个缺点。因此,本文的目的是展示太阳辐照度和环境温度对光伏电站发电的影响。为此,在南美洲的厄瓜多尔线路上选择了一个真正的光伏电站。结果表明,虽然太阳辐照度较高,但当环境温度高于25℃时,有功功率降低约0.1 ~ 0.3 p.u。
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引用次数: 3
Dynamic Risk Analysis and Energy Saving in Tunnels 隧道动态风险分析与节能
A. Focaracci, Giacomo Greco, L. Martirano
The technological innovation of systems in tunnels allows to reach high levels not only in energy efficiency but also in safety, where the legislation requires safety measures based on systematic considerations of all aspects of the system (infrastructure, operations, users, vehicles).In many existent tunnels, some structural safety measures could be implemented only through technical solutions with a disproportionate cost because of difficulties due to old infrastructures, unfavorable orographic situation or tunnels in sequence in wich simultaneously road works could cause a paralysis of traffic with unbearable economic and social costs. Therefore, a new layout of the SCADA system, able to perform a Dynamic Risk Analysis (DRA), has been developed to achieve immediate and effective benefits through the implementation of operational measures in Smart Tunnels in which advanced systems and sensors are installed. DRA can be associated with Energy Management Analysis (EMA) in order to perfectly fits within the "Industry 4.0" new European approach: through low costs it is possible to know real time what happens inside the tunnel, the environmental conditions, traffic data and system status (Smart Production), to apply operational measures in order to ensure the safety required (Smart Services) and to operate in energy saving mode whenever possible (Smart Energy).
隧道系统的技术创新不仅可以提高能源效率,还可以提高安全水平,立法要求在系统各方面(基础设施、操作、用户、车辆)的系统考虑基础上采取安全措施。在许多现有隧道中,由于基础设施陈旧、地形不利或隧道相继出现困难,同时进行道路工程可能导致交通瘫痪,经济和社会成本难以承受,因此一些结构安全措施只能通过技术解决方案实施,成本不成比例。因此,我们开发了一种新的SCADA系统布局,能够进行动态风险分析(DRA),通过在智能隧道中安装先进的系统和传感器,实施操作措施,实现即时有效的效益。DRA可以与能源管理分析(EMA)相结合,以完美地适应“工业4.0”的欧洲新方法:通过低成本,可以实时了解隧道内发生的情况、环境条件、交通数据和系统状态(智能生产),应用操作措施以确保所需的安全(智能服务),并尽可能以节能模式运行(智能能源)。
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引用次数: 3
Non-linear Backstepping based Control of an Islanded DC Microgrid with Constant Power Loads 恒负荷孤岛型直流微电网的非线性反演控制
Vaibhav Nougain, Rubi Rana, Aquib Jahangir, S. Mishra
The negative impedance characteristics of constant power loads (CPLs) and transient recovery stresses after fault isolation can cause system transient instability, load shedding and the possibility of load detriment in a microgrid if the conventional linear controllers are employed. With the complexity in the power distribution and the renewable integration, there is a need for an effective controlling technique with the attributes of the conventional controller; transient mitigating capability. This paper formulates a nonlinear backstepping control for the power electronic interfaces of an islanded DC microgrid giving a transient stability analysis for different contingencies incurring the system. The designed controller performance is validated using MATLAB/SIMULINK.
在采用常规线性控制器的微电网中,恒功率负载的负阻抗特性和故障隔离后的瞬态恢复应力会导致系统暂态失稳、负载脱落和负载损害的可能性。随着电力分配和可再生能源集成的复杂性,需要一种具有传统控制器属性的有效控制技术;暂态缓解能力。本文提出了孤岛直流微电网电力电子接口的非线性反步控制方法,并对系统发生的各种突发事件进行了暂态稳定性分析。利用MATLAB/SIMULINK对所设计控制器的性能进行了验证。
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引用次数: 0
Inverse Laplace Transform of Sunde’s Formula for the Ground Impedance of Buried Cables 埋地电缆接地阻抗的Sunde公式的拉普拉斯逆变换
F. Tossani, F. Napolitano, A. Borghetti
The time-domain calculation of electromagnetic transients in multi-conductor lossy overhead lines and buried cables requires the evaluation of the transient ground resistance matrix. For the case of overhead lines, analytical expressions for the transient ground resistance obtained by solving the inverse Laplace transform of Sunde’s formula have been recently presented. This paper presents the expressions obtained by the analytical inverse Laplace transform of Sunde’s formula for the case of buried cables. The results provided by the proposed analytical expressions agree with those given by the numerical inverse transform of Sunde’s formula. The new expressions are adopted for the calculation of the per-unit-length voltage drop in a multiconductor underground line. The voltage drop waveforms are compared with those given by recently proposed time-domain analytical expressions that neglect displacement currents.
多导体损耗架空线路和埋地电缆的电磁瞬变时域计算需要对瞬态接地电阻矩阵进行计算。对于架空线路,最近提出了通过求解Sunde公式的拉普拉斯逆变换得到暂态接地电阻的解析表达式。本文给出了在埋地电缆情况下,由Sunde公式的解析拉普拉斯逆变换得到的表达式。本文所提出的解析表达式与孙德公式的数值反变换结果一致。采用新表达式计算了多导体地下线路的单位长度电压降。将电压降波形与最近提出的忽略位移电流的时域解析表达式所给出的波形进行了比较。
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引用次数: 0
A Multi-agent system based residential electric vehicle management system for grid-support service 基于多智能体系统的住宅电动汽车并网服务管理系统
M. Nizami, M. Hossain, S. Rafique, K. Mahmud, U. Irshad, G. Town
With a spike in popularity and sales, the electric vehicles (EVs) have revolutionized the transportation industry. As EV technology advances, the EVs are becoming more accessible and affordable. Therefore, a rapid proliferation of light-duty EVs have been noticed in the residential sector. Even though the increased charging demand of EVs is manageable in large-scale, the low-voltage (LV) residential networks might not be capable of managing localized capacity issues of large scale EV integration. Dynamic electricity tariff coupled with demand response and smart charging management can provide grid assistance to some extent. However, uncoordinated charging, if clustered in a residential distribution feeder, can risk grid assets because of overloading and can even jeopardize the reliability of the network by violating voltage constraints. This paper proposes a coordinated residential EV management system for power grid support. Charging and discharging of residential EV batteries are coordinated and optimized to address grid overloading during peak demand periods and voltage constraint violations. The EV management for grid support is formulated as a mixed-integer programming based optimization problem to minimize the inconveniences of EV owner while providing grid assistance. The proposed methodology is evaluated via a case study based on a residential feeder in Sydney, Australia with actual load demand data. The simulation results indicate the efficacy of the proposed EV management method for mitigating grid overloading and maintaining desired bus voltages.
随着电动汽车的普及和销量的飙升,电动汽车已经彻底改变了交通运输行业。随着电动汽车技术的进步,电动汽车正变得越来越容易获得和负担得起。因此,轻型电动汽车在住宅领域的迅速扩散已经引起了人们的注意。尽管电动汽车充电需求的增加在大规模范围内是可控的,但低压(LV)住宅网络可能无法解决大规模电动汽车集成的局部容量问题。动态电价与需求响应和智能充电管理相结合,可以在一定程度上为电网提供辅助。然而,不协调的充电,如果集中在一个住宅配电馈线上,可能会因为过载而危及电网资产,甚至可能因违反电压约束而危及网络的可靠性。提出了一种面向电网支持的住宅电动汽车协同管理系统。通过对住宅用电动汽车电池充放电的协调优化,解决了用电高峰期电网过载和电压约束违规问题。将电网支持下的电动汽车管理问题表述为基于混合整数规划的优化问题,以最大限度地减少电动汽车车主在提供电网支持的同时所带来的不便。通过对澳大利亚悉尼住宅供电系统的实际负荷需求数据进行案例研究,对所提出的方法进行了评估。仿真结果表明了所提出的电动汽车管理方法在减轻电网过载和维持理想母线电压方面的有效性。
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引用次数: 11
An Approach for the Solar Energy Assessment using Weather Medium-Range Forecasting 利用天气中期预报评估太阳能的方法
I. Moreno-García, R. López-Luque, M. Varo-Martínez, L. M. Fernández-Ahumada, J. Ramírez-Faz, F. de la Torre
This paper presents a service that allows an operational assessment of solar energy systems based on the prediction of climate variables on different time scales, daily, monthly, seasonal or annual. The service is a planning tool building upon the Copernicus Climate Change Services, together with solar models and spatial and operational data of photovoltaic facilities. The added value of this service, as opposed to other systems that can be found on the market, is that it has been developed through an effective co-design with end-users, contributing to mutually beneficial collaboration, making possible to sustain their marketability and value. The proposed service is introduced and tested for automating both spatial and operational assessment of a utility-scale photovoltaic (PV) power plant. Experimental results are presented, which show and address the performance of the entire service.
本文提出了一种基于不同时间尺度(日、月、季或年)气候变量预测的太阳能系统运行评估服务。该服务是建立在哥白尼气候变化服务基础上的规划工具,包括太阳能模型和光伏设施的空间和运行数据。与市场上可以找到的其他系统相比,这项服务的附加价值在于,它是通过与最终用户的有效共同设计开发的,有助于互利合作,使维持其适销性和价值成为可能。介绍并测试了拟议的服务,用于自动化公用事业规模的光伏(PV)发电厂的空间和运行评估。最后给出了实验结果,验证了整个服务的性能。
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引用次数: 1
A Five-Level Quasi Z-Source Based NPC Inverter for PV Applications 基于准z源的五电平NPC逆变器
C. Das, A. Kirubakaran, V. Somasekhar
Latterly, impedance source based multilevel inverters are becoming popular for emerging renewable power generations. This paper presents a Five-Level quasi Z-source (qZS) based neutral point clamped (NPC) for photovoltaic (PV) applications. This inverter circuit is formed by integrating a dual quasi Z-source with a T-type arm and a diode clamped arm. Compared to the existing impedance source based NPC type converters, the proposed topology has less number of switching devices and reduced voltage stress. The level shifted pulse width modulation (LS-PWM) with hybrid shoot-through technique is implemented to achieve high boost gain and reactive power capability. The performance of the proposed topology is examined through simulation results for input voltage changes and load changes.
最近,基于阻抗源的多电平逆变器在新兴的可再生能源发电中越来越受欢迎。提出了一种用于光伏(PV)应用的基于中性点箝位(NPC)的五能级准z源(qZS)。该逆变电路由带t型臂和二极管箝位臂的双准z源集成而成。与现有的基于阻抗源的NPC型变换器相比,该拓扑结构具有较少的开关器件数量和较低的电压应力。为了实现高升压增益和无功能力,采用混合透射技术实现了电平移位脉宽调制(LS-PWM)。通过输入电压变化和负载变化的仿真结果检验了所提拓扑的性能。
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引用次数: 6
Statistical Characterization of Lightning Induced Overvoltage Waveforms in Overhead Lines 架空线路雷电感应过电压波形的统计特性
F. Napolitano, F. Tossani, A. Borghetti, C. Nucci, G. Podporkin
The proper insulation coordination of power apparatuses requires the knowledge of the withstand capability of the insulation against overvoltages stressing the given apparatus. By using a multivariate Monte Carlo procedure and the parameter probability distributions of the Cigré waveforms of the lightning current at the channel base, we provide a characterization of the parameter distributions of the induced voltage waveforms in a single conductor overhead line. A simplified formula is proposed to reproduce the curve that represents the expected annual number of lightning that induce voltages larger than the insulation level of the line in case insulators flashovers are not considered in the appraisal. The results for the case of an ideal insulation level are compared to those obtained by considering the flashovers in medium voltage insulators represented by means of the disruptive effect (DE) criterion. The parameters of the DE model are estimated by using the voltage-time-to-breakdown curve inferred from laboratory test results.
电力设备的适当绝缘协调要求了解对给定设备施加过电压的绝缘承受能力。利用多变量蒙特卡罗方法和通道基处雷电电流cigr波形的参数概率分布,给出了单导线架空线路中感应电压波形的参数分布特征。在评估中不考虑绝缘子闪络的情况下,提出了一个简化公式来再现表示感应电压大于线路绝缘等级的雷电年预期次数的曲线。将理想绝缘水平下的结果与用破坏效应(DE)准则表示的考虑中压绝缘子内闪络的结果进行了比较。利用实验室试验结果推导出的电压-击穿时间曲线来估计DE模型的参数。
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引用次数: 3
An innovative Home and Building Automation design tool for Nanogrids Applications 一个创新的家庭和楼宇自动化设计工具,用于纳米电网的应用
Aurelio Paolillo, D. L. Carní, M. Kermani, L. Martirano, A. Aiello
The home and building automation systems evolution, creates the necessity to define new formalities for the clear and univocal description of their functionalities. To describe the operation of such a system, it is necessary therefore to add a further level that keeps in mind the logical connections among devices and their configurations. The addition of this level makes unambiguous the description of the plant functionalities. From the current state of the art it arises the demand of creating a software that allows the home automation system designer to exclusively focus on the logical functionalities of the system, furnishing to the system integrator the general details for the hardware settings. Particularly, the new network implementation details (KNX system, proprietary systems, etc.) will be completely transparent to the designer. The objective is to get a project documentation that is possible to adapt both for KNX home automation systems and for proprietary systems managed by a gateway (Xiaomi or Google Home).
随着家庭和楼宇自动化系统的发展,有必要为其功能的清晰和明确的描述定义新的形式。因此,为了描述这样一个系统的操作,有必要再增加一个级别,以记住设备及其配置之间的逻辑连接。这一层的添加使植物功能的描述变得明确。从目前的技术水平来看,出现了创建一个软件的需求,该软件允许家庭自动化系统设计师专门关注系统的逻辑功能,向系统集成商提供硬件设置的一般细节。特别是,新的网络实现细节(KNX系统、专有系统等)将对设计者完全透明。我们的目标是获得一个项目文档,它既可以适用于KNX家庭自动化系统,也可以适用于由网关(小米或Google home)管理的专有系统。
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引用次数: 9
期刊
2019 IEEE International Conference on Environment and Electrical Engineering and 2019 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)
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