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2019 International Conference on Clean Electrical Power (ICCEP)最新文献

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Low Voltage Grid Monitoring and Control Enhancement: The GridEye Solution 加强低压电网监控:GridEye解决方案
Pub Date : 2019-07-01 DOI: 10.1109/ICCEP.2019.8890203
M. Carpita, A. Dassatti, M. Bozorg, J. Jaton, S. Reynaud, O. Mousavi
In this paper the main specification of a low voltage utility monitoring and control tool, Grideye, are presented. The control capability is based on the implementation of model-less methods for estimation of voltage and current sensitivity coefficients. Those coefficients are evaluated with respect to the nodal active and reactive power injections/absorptions. The model-less approach is an important aspect of the control solution for low voltage grids, in which accurate and up-to-date model of the network is not always available. Finally, the results of field tests are presented to demonstrate the effectiveness of the GridEye solution.
本文介绍了低压电力监控工具Grideye的主要技术指标。控制能力是基于实现无模型的方法来估计电压和电流的灵敏度系数。这些系数是根据节点的有功功率和无功功率注入/吸收来计算的。无模型方法是低压电网控制解决方案的一个重要方面,在这种情况下,准确和最新的网络模型并不总是可用的。最后,给出了现场试验结果,验证了GridEye解决方案的有效性。
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引用次数: 11
Maximum Power Transfer in Electromagnetic Vibration Energy Harvesters driven by Non-Sinusoidal Vibrations 非正弦振动驱动的电磁振动能量采集器的最大功率传输
Pub Date : 2019-07-01 DOI: 10.1109/ICCEP.2019.8890078
L. Costanzo, M. Vitelli
In this paper, the problem of the Maximum Power Extraction is discussed with reference to Resonant Electromagnetic Vibration Energy Harvesters driven by non-sinusoidal vibrations. It is well known that, in order to maximize the harvested power in case of purely sinusoidal vibrations, the Maximum Power Transfer Theorem must be exploited. Instead, in case of non-sinusoidal vibrations, the Nonlinear Dynamic Maximum Power Transfer Theorem must be exploited. An active power electronics AC/DC architecture is considered and two different control algorithms are proposed and discussed. They are respectively used for the implementation of the Maximum Power Transfer Theorem and of the Nonlinear Dynamic Maximum Power Transfer Theorem. The differences existing between the two proposed controls techniques in terms of performances and implementation complexity are discussed and analyzed with the help of suitable numerical simulations.
本文以非正弦振动驱动的谐振式电磁振动能量采集器为研究对象,讨论了其最大功率提取问题。众所周知,为了在纯正弦振动的情况下最大限度地获取功率,必须利用最大功率传递定理。相反,在非正弦振动的情况下,必须利用非线性动态最大功率传递定理。考虑了有源电力电子交流/直流结构,提出并讨论了两种不同的控制算法。它们分别用于实现最大功率转移定理和非线性动态最大功率转移定理。通过适当的数值模拟,讨论和分析了两种控制技术在性能和实现复杂性方面存在的差异。
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引用次数: 1
Investment assessment over fast and ultra-fast EV charging stations with embedded electricity storage systems 嵌入式储电系统的快速和超高速电动汽车充电站投资评估
Pub Date : 2019-07-01 DOI: 10.1109/ICCEP.2019.8890128
L. Schirinzi, G. Coppola, C. B. Muñoz
This work presents an assessment on investment profitability and economic convenience to install Electric Vehicle (EV) fast and ultrafast charging stations with storage in Italy and in California, based on Enel X’s experience both as charging infrastructure operator and mobility service provider in its markets. The paper introduces the main requirements driving the storage installation for charging infrastructure, summarizes the proposed technical solution and reports results of financial analysis performed with the net present value methodology.
基于Enel X在其市场作为充电基础设施运营商和移动服务提供商的经验,本研究评估了在意大利和加利福尼亚安装电动汽车(EV)快速和超快速充电站的投资盈利能力和经济便利性。本文介绍了驱动充电基础设施储能安装的主要需求,总结了提出的技术解决方案,并报告了使用净现值方法进行财务分析的结果。
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引用次数: 1
Fully integrated EV energy storage using transport infrastructure 利用交通基础设施全面集成电动汽车储能
Pub Date : 2019-07-01 DOI: 10.1109/ICCEP.2019.8890133
T. Zhang, E. Ballantyne, D. Stone
This paper explores the synergy between the use of electric vehicles (EVs) for commuting and light rail systems, for example an inner city trams system. The desire to move towards EVs is rapidly increasing the number of EVs available on the roads, and hence the availability of EV batteries for future vehicle to grid (V2G) applications. Most Light rail systems utilize a DC power supply (typically 750Vdc) and require large power draw as the tram / train accelerates. Moreover, a large regenerative power results when the tram / train stops. This paper explores the typical energy use in light rail systems and explores the utilization of the dc rail supply to charge EV’s parked in ‘park-and-ride’ facilities trackside. In addition, the V2G aspect of the system could allow the EV battery to form an energy supply to assist the tram / train during acceleration and accept the regenerated energy from the system as the tram / train stops.
本文探讨了使用电动汽车(ev)上下班和轻轨系统(例如内城有轨电车系统)之间的协同作用。转向电动汽车的愿望正在迅速增加道路上可用的电动汽车数量,因此电动汽车电池的可用性用于未来的车辆到电网(V2G)应用。大多数轻轨系统使用直流电源(通常为750Vdc),并且在有轨电车/火车加速时需要很大的功率消耗。此外,当电车/火车停止时,产生了很大的再生功率。本文探讨了轻轨系统的典型能源使用情况,并探讨了直流轨道电源对停靠在“停车换乘”设施轨道旁的电动汽车充电的利用。此外,该系统的V2G方面可以让电动汽车电池形成能量供应,以协助有轨电车/火车加速,并在有轨电车/火车停止时接受系统的再生能量。
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引用次数: 1
Load matching in residential buildings through the use of thermal energy storages 在住宅建筑中通过使用热能储存进行负荷匹配
Pub Date : 2019-07-01 DOI: 10.1109/ICCEP.2019.8890152
A. Miglioli, C. Pero, F. Leonforteand, N. Aste
Vapour compression heat pump systems powered by photovoltaic panels represent the most diffused and cost-effective technical solution to provide heating, ventilation and air conditioning from renewable energy sources in the building sector. However, the aleatory distribution of daily solar radiation and its mismatch with heating, cooling and domestic hot water demand is the main constrain related to the exploitation of photovoltaic energy. Energy storage systems are fundamental to obtain high levels of energy self-consumption from non-programmable renewable energy sources, reducing the electricity exchange with the grid and the related operating costs. The aim of the study is to determine the optimal size of a water thermal storage to be coupled with photovoltaic panels and a vapour- compression heat pump, under energy end economic points of view. Two different kinds of building typologies are considered: a single-family and a multi-family house, characterized by different values of surface-to-volume ratios, internal occupancy and ventilation rates. Buildings energy modelling and dynamic simulations are performed through EnergyPLUS software. The size of the photovoltaic system is chosen according to the energy demand and different water thermal storages are simulated to find the optimal size for each building typology.
由光伏板供电的蒸汽压缩热泵系统代表了在建筑领域使用可再生能源提供供暖、通风和空调的最广泛和最具成本效益的技术解决方案。然而,日太阳辐射的随机分布及其与供暖、制冷和生活热水需求的不匹配是光伏能源开发的主要制约因素。储能系统是从不可编程的可再生能源中获得高水平能源自我消耗的基础,减少了与电网的电力交换和相关的运营成本。该研究的目的是确定在能源末端经济观点下,与光伏板和蒸汽压缩热泵相结合的水储热的最佳尺寸。考虑了两种不同类型的建筑:单户住宅和多户住宅,其特点是不同的表面容积比、内部占用率和通风率。通过EnergyPLUS软件进行建筑能源建模和动态模拟。根据能源需求选择光伏系统的尺寸,并模拟不同的水蓄热方式,以找到每种建筑类型的最佳尺寸。
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引用次数: 8
An Integrated Energy Management System for Nearly Zero Energy Buildings 面向近零能耗建筑的综合能源管理系统
Pub Date : 2019-07-01 DOI: 10.1109/iccep.2019.8890174
N. Jabbour, E. Tsioumas, D. Papagiannis, M. Koseoglou, C. Mademlis
With the development of the nearly zero energy buildings (nZEB), the most challenging problem is the optimal energy management of buildings with respect to multiple and conflicting objectives. In this paper, a genetic algorithm (GA) is developed for optimal electric energy use in a building, considering a balance between energy saving and a comfortable lifetime in combination with maximizing the exploitation of the excess energy of the renewable energy sources (RES). The proposed control algorithm is based on a mixed objective function that considers the real time electricity price, the state of charge (SoC) of the battery-based energy storage system (ESS), the weather forecast, the system constraints and the user preferences ensuring reduced utility bills and optimal task scheduling for programmable loads and energy sources. Also, the proposed GA-based control scheme has generalized utilization at smart building applications and can be used either if the feed-in tariff policy is adopted by the electric energy provider or not. To verify the efficiency of the proposed algorithm, several simulations were performed under different scenarios using real data and the obtained results were compared in terms of total energy consumption cost and users’ comfort level.
随着近零能耗建筑(nZEB)的发展,最具挑战性的问题是建筑在多个相互冲突的目标下的最佳能量管理。考虑到节能和舒适寿命之间的平衡,并最大限度地利用可再生能源(RES)的多余能量,本文开发了一种遗传算法(GA)来优化建筑物的电能使用。所提出的控制算法基于混合目标函数,该函数考虑了实时电价、电池储能系统(ESS)的充电状态(SoC)、天气预报、系统约束和用户偏好,以确保减少公用事业费用和可编程负载和能源的最佳任务调度。此外,所提出的基于遗传算法的控制方案在智能建筑应用中具有广泛的应用,无论电力供应商是否采用上网电价政策,都可以使用。为了验证所提算法的有效性,利用真实数据在不同场景下进行了多次仿真,并从总能耗成本和用户舒适度两方面对仿真结果进行了比较。
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引用次数: 0
Cluster-Based Decoupled Voltage Sensitivity Analysis Under Unbalanced Grid Condition 不平衡电网条件下基于聚类的解耦电压灵敏度分析
Pub Date : 2019-07-01 DOI: 10.1109/ICCEP.2019.8890225
S. Leksawat, E. Ortjohann, T. Premgamone, D. Holtschulte, A. Schmelter, J. Kortenbruck, S. Varada, D. Morton
the modernization of the power grids towards smart grid is currently on the way. To cope with energy transition, decentralization of traditional active grid operation and control to distribution grids is required, as distributed generation (DG) units are present. Clustering power systems approach (CPSA) has been developed to enable consistent decentralized operations in the grids. In this paper, a method of decoupled voltage sensitivity analysis based on the CPSA is proposed to assist the use of the DG units in decentralized areas under unbalanced grid condition. The analysis utilizes only measurement data gathered from phasor measurement units. To perform the analysis method, the impedance model of each area is first determined. Based on the impedance model, the sensitivity analysis of bus voltages and their respective angles can be then conducted. The proposed method is verified by a simulation on a low-voltage distribution grid. The results prove that the proposed method can be efficiently used for decoupled voltage sensitivity analysis.
电网现代化向着智能电网的方向发展。随着分布式发电机组的出现,为应对能源转型,需要将传统的有源电网的运行和控制分散到配电网。集群电力系统方法(CPSA)的发展是为了在电网中实现一致的分散运行。本文提出了一种基于CPSA的解耦电压灵敏度分析方法,以辅助分布式地区在电网不平衡条件下的分布式发电机组的使用。该分析仅利用从相量测量单元收集的测量数据。为了执行分析方法,首先确定每个区域的阻抗模型。基于阻抗模型,可以对母线电压及其角度进行灵敏度分析。通过低压配电网的仿真验证了该方法的有效性。结果表明,该方法可以有效地用于解耦电压灵敏度分析。
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引用次数: 0
Sensorless Variable Speed Operation of Doubly-Fed Reluctance Wind Generators 双馈磁阻风力发电机无传感器变速运行
Pub Date : 2019-07-01 DOI: 10.1109/ICCEP.2019.8890198
M. Jovanović, S. Ademi, R. Binns
A flux vector orientated control scheme for gridconnected applications of an emerging doubly-fed reluctance generator without a shaft angular position or velocity sensor has been proposed and experimentally verified. This brushless machine technology is inherently medium-speed and as such is an attractive solution for the compromised reliability and high maintenance costs associated with the presence of brushes and the failures prone 3-stage gearbox of conventional slip ring doublyfed induction generators, traditionally used in wind energy conversion systems. The test results produced have undoubtedly shown the sensorless controller effectiveness both in terms of speed and reactive power response for typical variable loading profiles and speed ranges of geared wind turbines.
针对新型双馈磁阻发电机的并网应用,提出了一种磁链矢量定向控制方案,并进行了实验验证。这种无刷电机技术本质上是中速的,因此对于传统滑环双馈感应发电机(传统上用于风能转换系统)的可靠性和高维护成本的存在以及容易发生故障的三级齿轮箱而言,这是一种有吸引力的解决方案。所产生的测试结果无疑表明了无传感器控制器在转速和无功响应方面的有效性,无论是在典型的可变负载剖面和变速风力涡轮机的转速范围。
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引用次数: 5
PM Wind Generator with Reduced Amount of Rare-Earth Magnet Material 稀土磁铁材料用量减少的永磁风力发电机
Pub Date : 2019-07-01 DOI: 10.1109/ICCEP.2019.8890097
G. Dajaku, D. Gerling
This paper presents a new rotor for permanent magnet wind generators aimed to reduce the amount of rare-earth materials. The new rotor configuration has been used for the design of a 10 MW PM generator for direct drive wind turbines in order to reduce their magnet costs. In order to prove its effectiveness, also a conventional PMSG with surface magnets rotor is considered as reference machine for comparison. Using the same geometry and electrical constrains the both PMSGs are developed following an analytical iterative procedure and afterwards using FEA. According to the preliminary results, the new rotor design requires significantly less magnet material compared with the conventional rotor. Investigations done on the 10 MW PMSG shows that with the proposed design the magnet weight can be reduced for about 2.7 tons.
为减少稀土材料的用量,提出了一种新型永磁风力发电机转子。新的转子配置已用于直接驱动风力涡轮机的10兆瓦PM发电机的设计,以降低其磁铁成本。为了证明其有效性,还以表面磁体转子的传统永磁同步电机作为参考电机进行了比较。使用相同的几何和电约束,这两个pmsg是在分析迭代过程中开发的,然后使用有限元分析。初步结果表明,与传统转子相比,新型转子设计所需的磁体材料明显减少。对10 MW PMSG进行的研究表明,采用所提出的设计,磁体重量可减少约2.7吨。
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引用次数: 4
Addressing minimum energy consumption and minimum CO2 emission for Electric Mobility 解决电动汽车的最低能耗和最低二氧化碳排放问题
Pub Date : 2019-07-01 DOI: 10.1109/ICCEP.2019.8890221
A. Oceano, G. Rodella, G. Brusaglino, L. D. di Noia, R. Rizzo
In the view of the general use electric vehicle, totally pollution free during operation, the range extension over the autonomy allowed by the recommended and most effective overnight charge of the battery, should be considered according to the time required to get on board the appropriate energy for the accomplishment of the mission. Two streamlines are possible for vectoring energy to the vehicle in a totally clean mode, feed the traction system: the electricity and the hydrogen. The electricity is generally recognized as a vector showing the highest efficiency and the lowest CO2 production, with reference to the generation based on the mix of the European energy sources, including the renewable ones. A combination of these supply lines for a hybrid battery–fuel cell system is considered and the various aspects of the infrastructures is discussed with an analysis of the parameters impacting the energy transfer, the production of the hydrogen, the type of interfaces for the two lines of supply with respect to the above mentioned features. In particular, the infrastructural solution at the station consisting of electricity supply by magnetic field wireless power transfer and hydrogen produced by electrolysis or by natural gas reforming is considered. In the paper a trade-off scenario is discussed about the use of a Fuel Cell Hydrogen Electric Hybrid externally chargeable system with respect to the energy consumption and CO2 production, considering the double energy supply electricity and hydrogen.
鉴于一般使用的电动汽车,在运行过程中完全无污染,续航里程超过自主性允许的范围,建议和最有效的夜间充电的电池,应考虑根据所需的时间获得适当的能量,以完成任务。两种流线可以在完全清洁的模式下向车辆输送能量,为牵引系统供电:电力和氢气。电力通常被认为是显示最高效率和最低二氧化碳产量的矢量,参考基于欧洲能源组合的发电,包括可再生能源。考虑了混合动力电池-燃料电池系统的这些供应线的组合,并讨论了基础设施的各个方面,分析了影响能量传递的参数,氢气的产生,以及两条供应线的接口类型。特别是考虑了通过磁场无线传输供电和通过电解或天然气重整制氢的基础设施解决方案。考虑到电力和氢气的双重能源供应,本文讨论了燃料电池氢电混合外部充电系统在能源消耗和二氧化碳产生方面的权衡方案。
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引用次数: 1
期刊
2019 International Conference on Clean Electrical Power (ICCEP)
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