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2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)最新文献

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Optimal Design of DER for Economic/Environmental Sustainability of Local Energy Communities 地方能源社区经济/环境可持续性的DER优化设计
F. Foiadelli, Salvatore Nocerino, M. di Somma, G. Graditi
In this paper, a multi-objective optimization model is proposed to obtain the optimized configuration of interconnected distributed energy resource (DER) systems in a local energy community (LEC), while considering economic and environmental aspects. The objective is the optimal selection and sizing of DER with corresponding operation strategies, and the optimal configuration of the heating pipeline network, which allows the heat exchange among the DER systems. The economic objective is to minimize the total annual cost, whereas the environmental objective is to minimize the total annual CO2emissions. The Pareto frontier is found through the weighted-sum method, by using branch-and-cut. Numerical results show that the design method allows identifying different configurations of the interconnected DER systems and heating pipeline network on the Pareto frontier, thereby providing trade-off options to planners for economic/environmental sustainability of the LEC. Moreover, the total annual cost and emissions of the LEC with the optimized configurations are significantly reduced as compared with the conventional energy supply scenario.
本文提出了一个多目标优化模型,以获得局部能源社区(LEC)中互联分布式能源(DER)系统的优化配置,同时考虑经济和环境因素。研究的目标是通过相应的运行策略来优化供热管网的选型和规模,并优化供热管网的配置,使供热管网之间的热交换得以实现。经济目标是使年度总成本最小化,而环境目标是使年度二氧化碳总排放量最小化。Pareto边界是通过加权和方法找到的,采用了分支分割法。数值结果表明,该设计方法可以识别出帕累托边界上相互连接的DER系统和供热管网的不同配置,从而为规划者提供LEC经济/环境可持续性的权衡选择。此外,与传统能源供应方案相比,优化配置后的LEC年总成本和排放量显著降低。
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引用次数: 7
An Optimization Model for Polygeneration Microgrids with Renewables, Electrical and Thermal Storage: Application to the Savona Campus 具有可再生能源、电和热存储的多联产微电网的优化模型:在萨沃纳校园的应用
S. Bracco, M. Brignone, F. Delfino, F. Pampararo, M. Rossi, G. Ferro, M. Robba
In this paper, an optimization model for polygeneration microgrids is presented. In particular, the system is characterized by trigeneration plants, renewables, district heating, thermal and electrical storage systems and flexible loads. The control variables are represented by the schedule of the power plants and of the deferrable demand, while the state variables are the energy stored in batteries and water tanks. The objective function minimizes operational costs in the day-ahead. The model is applied to the University of Genoa research infrastructures at Savona Campus, characterized by a Smart Polygeneration Microgrid and a Smart Energy Building.
本文提出了一个多联产微电网的优化模型。特别是,该系统的特点是三联电站、可再生能源、区域供热、热电存储系统和灵活负载。控制变量由电厂的计划和可延需求表示,状态变量为蓄电池和水箱中的储能。目标函数使前一天的运营成本最小化。该模型应用于热那亚大学萨沃纳校区的研究基础设施,其特点是智能多电联产微电网和智能能源大楼。
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引用次数: 11
Nonlinear Multi-Scale Dynamics Modeling of a Piezoelectric Energy Harvester 压电能量采集器的非线性多尺度动力学建模
P. Montegiglio, C. Maruccio, G. Acciani, G. Rizzello, S. Seelecke
Hysteretic effects play a crucial role in the behavior of devices based on piezoelectric materials. Most of the research focuses on modeling these effects for controlling the dynamic response of piezoelectric actuators. Few studies discuss how hysteresis influences power generation and performances of energy harvesters based on such active materials. In this paper, a recently developed physics-based model of a PZT crystal is employed to assess the effects of material mesoscopic variables on the macroscopic response of a piezoelectric energy harvester modeled as a SDOF system. A multi-scale approach is adopted where, at the mesoscale, crystal domain switching - the source of hysteretic behavior - is taken into account through a probabilistic thermodynamic approach. Effects of hysteretic nonlinearities on harvesting performances of the considered device are investigated by means of simulations. A comparison between predictions of two models - with and without hysteresis - is also reported.
滞回效应在压电材料器件的性能中起着至关重要的作用。大多数研究都集中在这些效应的建模上,以控制压电驱动器的动态响应。很少有研究讨论迟滞如何影响基于这种活性材料的能量采集器的发电和性能。本文采用最近建立的基于物理的PZT晶体模型来评估材料细观变量对SDOF系统的压电能量采集器宏观响应的影响。采用多尺度方法,其中,在中尺度,晶体域切换-迟滞行为的来源-被考虑通过概率热力学方法。通过仿真研究了滞回非线性对所考虑器件采集性能的影响。报告还比较了两种模型的预测结果——有和没有迟滞。
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引用次数: 2
The Time Resolution of the Load Profile and its Impact on a Photovoltaic-Battery System 负载曲线的时间分辨率及其对光伏电池系统的影响
G. Brusco, A. Burgio, D. Menniti, M. Motta, A. Pinnarelli, N. Sorrentino, N. Tutkun
This paper explores the time resolution of the load profile and its impact on the size and operation of a photovoltaic-battery system. The impact on savings of the electric bill, the imported and exported power, the life estimation of the batteries and the load profile by the point of view of the distribution system operator are also studied. The impact is evaluated via numerical experiments; time resolutions of load profiles are in the 15–60 minutes range. The energy consumption, the irradiance and ambient temperature of a real case are considered.
本文探讨了负载分布的时间分辨率及其对光伏电池系统的大小和运行的影响。从配电网运营商的角度出发,对节电、进出口电力、蓄电池寿命估算和负荷分布等方面进行了研究。通过数值实验对其影响进行了评估;负载剖面的时间分辨率在15-60分钟范围内。考虑了实际情况下的能耗、辐照度和环境温度。
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引用次数: 3
Avoiding the Hot Spot Occurrence in PV Modules 避免光伏组件出现热点
P. Guerriero, P. Cennamo, I. Matacena, S. Daliento
Failures involving PV cells affect the global reliability of the whole PV plant. Malfunctioning cells experience dramatic reverse biasing, causing over temperature and often leading to permanent damages. Even though traditional bypass diodes limit severe reverse biasing, they are not able to avoid over-temperature and hot spot occurrence. The circuit proposed in this paper replaces traditional bypass diodes, providing bypass action of sub-panel in case of significant reduction of the operating voltage; therefore, the operating area of the sub-panel is reduced to a safety area close to the MPP. Moreover, in case of bypass, the proposed circuit zeros the current in the bypassed cell by means an automatic disconnection section, thus avoiding power dissipation and the resulting hot spot. Experiments performed on a partially shaded PV module evidenced the reduction of the operating temperature in malfunctioning cells with respect to the traditional bypass diode.
光伏电池的故障会影响整个光伏电站的整体可靠性。故障细胞会经历剧烈的反向偏置,导致温度过高,并经常导致永久性损伤。尽管传统的旁路二极管限制了严重的反向偏置,但它们无法避免过热和热点的发生。本文提出的电路取代了传统的旁路二极管,在工作电压显著降低的情况下提供子面板的旁路作用;因此,子面板的操作区域减少到靠近MPP的安全区域。此外,在旁路情况下,该电路通过自动断开部分将旁路单元中的电流归零,从而避免了功耗和由此产生的热点。在部分遮蔽的PV组件上进行的实验证明,相对于传统旁路二极管,故障电池的工作温度降低了。
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引用次数: 2
Grounding Strategies for High Voltage Shore Connection of Large Passenger Vessels 大型客船高压岸接接地策略研究
E. B. Mehammer, O. Kongstein, A. Brede
High voltage shore connection of large passenger vessels is an important way to improve energy efficiency and reduce local and global emissions, as well as noise. However, it is shown that the vessels' steel hulls will act as sacrificial anodes for the grounding systems in the ports, hence accelerated corrosion of the hulls may occur. The required protective earth (PE) conductor between the hull and the grounding system on shore could also introduce touch voltages above 30 V in case of a fault, posing a safety hazard. Based on field measurements and analyses, a grounding strategy with galvanic separation in the low resistance PE conductor is recommended. It is further advised to use active and passive cathodic protection, and to reduce the set point of the impressed current cathodic protection (ICCP) system to approximately 100 mV versus zinc. These measures will reduce the corrosion rate of the vessels' hulls during power delivery from shore, while avoiding transferred touch voltages.
大型客船的高压岸上连接是提高能源效率,减少当地和全球排放以及噪音的重要途径。然而,研究表明,船舶的钢壳将作为港口接地系统的牺牲阳极,因此可能会加速船体的腐蚀。船体与岸上接地系统之间所需的保护接地(PE)导体也可能在故障情况下引入超过30 V的接触电压,构成安全隐患。在现场实测和分析的基础上,提出了在低阻聚乙烯导体中采用隔电接地的接地策略。进一步建议使用主动和被动阴极保护,并将外加电流阴极保护(ICCP)系统的设定点降低到约100 mV对锌。这些措施将减少船舶船体在岸上电力输送过程中的腐蚀速度,同时避免传递接触电压。
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引用次数: 1
Two-stage Clustering for Profiling Residential Customer Demand 住宅客户需求分析的两阶段聚类
S. Mocci, F. Pilo, G. Pisano, M. Troncia
Since the power system operation and planning depend on generation and consumption behavior, load and generation patterns are fundamental inputs for power system analyses. TSOs and DSOs use typical daily profiles for representing the consumption of the end-users. The evolution of power systems, due to the increased integration of renewables, and the changed end-users practices are stressing the operation and planning processes. The updating of the typical load profiles to the behavior of current customers is often disregarded, and currently the used profiles refer to out-of-date and incomplete measurement campaigns. This paper proposes an innovative two-stage clustering methodology, able to find typical load profiles of residential customers. The focus to the residential customers is due to their extremely variable behavior in their consumption. The results add to the current practice useful improvements for planning and operation studies.
由于电力系统的运行和规划取决于发电和用电行为,负荷和发电模式是电力系统分析的基本输入。tso和dso使用典型的日常概况来表示最终用户的消费。由于可再生能源整合的增加,电力系统的发展以及最终用户实践的改变,都在强调运营和规划过程。针对当前客户行为的典型负载配置文件的更新经常被忽略,并且当前使用的配置文件指的是过时和不完整的测量活动。本文提出了一种创新的两阶段聚类方法,能够找到典型的住宅用户负荷分布。对住宅客户的关注是由于他们在消费中的行为非常多变。研究结果为规划和操作研究提供了有益的改进。
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引用次数: 3
An Efficient Fault Tolerant Cascaded Step-Up Step-Down Converter for Solar PV Modules 一种用于太阳能光伏组件的高效容错级联升压降压转换器
S. Siouane, S. Jovanovic, P. Poure, E. Jamshidpour
Renewable energy sources become an increasing alternative power source. Among the available energy sources, Photovoltaic (PV) has a remarkable growth and a significant penetration in many applications. PV-based power supplies are managed by switching power converters and the connected activities will halt when power supply fails. In this paper, we propose an original fault tolerant cascaded step-up step-down converter circuit, under transistor fault. Both open-circuit fault (OCF) and short-circuit fault (SCF) of transistors are considered. The fault tolerant operation of the proposed circuit is based on the following elements: fault tolerant cascaded step-up step-down circuit, transistor fault diagnosis and suitable reconfigurable control. The originality of the proposed fault tolerant circuit lays on implementing a global reconfiguration for the two-cascaded stages, based on a single synchronous redundant transistor. Moreover, the fault detection is based on the waveforms of the inductance currents. An efficient reconfigurable control with fast post-fault management is also proposed. Some selected simulation results are provided to validate the effectiveness of the fault tolerant operation.
可再生能源日益成为一种替代能源。在可用的能源中,光伏(PV)在许多应用中具有显著的增长和显著的渗透。基于pv的电源由开关电源转换器管理,当电源故障时,连接的活动将停止。本文提出了一种新颖的晶体管故障下的级联升压降压变换器容错电路。同时考虑了晶体管的开路故障和短路故障。该电路的容错操作基于以下要素:容错级联升压降电路、晶体管故障诊断和适当的可重构控制。所提出的容错电路的独创性在于基于单个同步冗余晶体管实现双级联级的全局重新配置。此外,故障检测是基于电感电流的波形。提出了一种具有快速故障后管理的高效可重构控制方法。仿真结果验证了容错操作的有效性。
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引用次数: 7
Universal Protection Software and its Application in Smart Grid 通用保护软件及其在智能电网中的应用
Salman Rezaei
Nowadays electrical power systems are growing up and distribution networks are increasingly complicated due to high penetration of renewable energy resources. Smart grid includes several micro grids and utility system. It provides bidirectional feature of power and information among generations and consumers. In addition, consecutive switching of energy resources and microgrid operation modes causes variety of network configurations. Hence, it requires a real time adaptation of protective systems. In this paper, Universal protection software based on protection requirements is proposed to design protective system. The software is applicable in offline and online mode. The online feature updates protective configuration and setting parameters based on changing network configuration by means of a hardware interface.
在电力系统不断发展的今天,由于可再生能源的高度普及,配电网日趋复杂。智能电网包括多个微电网和公用事业系统。它提供了代际和消费者之间权力和信息的双向特性。此外,由于能源和微网运行方式的不断切换,导致网络配置的多样性。因此,它需要实时适应保护系统。本文提出了基于保护要求的通用保护软件来设计保护系统。本软件支持离线和在线两种模式。在线特性通过硬件接口根据网络配置的变化来更新保护配置和设置参数。
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引用次数: 3
Development of Thyristors Voltage Regulator Operating with Different Load Characteristics 不同负载特性晶闸管稳压器的研制
D. I. Panfilov, M. I. Petrov, P. Rashitov, M. G. Astashev, A. N. Rozhkov
This paper provides thyristors voltage regulator (TVR) which reliably operates at various characters of the load and is able to inject different levels of voltage in the transmission line. A method to eliminate overvoltage on thyristors during TVR operation is proposed. It also provides reliable operation of TVR during short circuit in power lines. The analysis of the TVR operation during a short circuit condition is performed. The simulation models to carry out studies of the TVR operation are proposed. The results of TVR operation on physical and simulation models are presented and analyzed.
本文提出了一种可在各种负载特性下可靠工作并能向输电线路注入不同电压等级的晶闸管稳压器。提出了一种在TVR运行过程中消除晶闸管过电压的方法。它还提供了在电力线路短路时TVR的可靠运行。对TVR在短路情况下的运行进行了分析。提出了进行TVR运行研究的仿真模型。给出并分析了TVR在物理模型和仿真模型上的运行结果。
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引用次数: 6
期刊
2018 IEEE International Conference on Environment and Electrical Engineering and 2018 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe)
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