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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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Future State Visualization in Power Grid 电网未来状态可视化
K. Hock, David McGuiness
Electrical utilities are faced with a challenge of processing large amount of data and presenting operators with optimal amount of information, which identifies the essential and critical state of the grid. The data have to be in form, which can be easily consumed by operators and easily associated with functional and geographical knowledge of the grid. Most of the visual presentations in power systems are focused on real-time and historical rendering of information. In modern electrical utility environment, it is becoming important to visualize the information predicted for the future state of the power system. The software development work was performed in a large electrical utility of USA in order to enhance visualization of future power system state. The implemented features encompass advanced future state monitoring, transmission reliability index, dashboard, global system wide alarms, and rendering of the forecasted weather and power system state data on GIS maps.
电力公司面临着处理大量数据并向运营商提供最优信息量的挑战,这些信息可以识别电网的基本和关键状态。数据必须是形式的,便于操作员使用,并易于与网格的功能和地理知识相关联。电力系统的可视化呈现主要集中在信息的实时和历史呈现上。在现代电力事业环境中,对电力系统未来状态的预测信息进行可视化变得越来越重要。为了增强对未来电力系统状态的可视化,软件开发工作在美国一家大型电力公司进行。实现的功能包括先进的未来状态监测、传输可靠性指数、仪表板、全球系统范围警报,以及在GIS地图上呈现预测天气和电力系统状态数据。
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引用次数: 1
Configurations of Modified SEPIC Converter with Switched Inductor Module (MSCsI) for Photovoltaic Application: Part-II 光电应用中带有开关电感模块(MSCsI)的改进型SEPIC变换器的配置:第二部分
P. Kiran Maroti, Sanjeevikumar Padmanaban, D. Ionel, P. Siano, Zbigniew Leonowicz
The proposed work is extended configurations of Modified SEPIC Converter (MSC) and Modified SEPIC Converter with Switched Module (MSCSI). The proposed three configurations are derived by replacing two inductor of MSC by two Switched Inductor (SI) modules, namely Modified SEPIC Converter with XYL configuration (MSCSI-XYL), Modified SEPIC Converter with LYZ configuration (MSCSI-LYZ) and Modified SEPIC Converter with XLZ configuration (MSCSI-XLZ) to improve or increase the overall gain of the converter. The key feature of proposed configuration is: (i) single switch topologies, (ii) no reverse current flow from load to source due to large inductor at the input side, (iii) high voltage conversion ratio. The detailed analysis of three configurations is done in terms of component count, voltage conversion ratio and efficiency. The mathematical analysis and simulation results validates the functionality of three configurations.
提出的工作是改进SEPIC转换器(MSC)和改进SEPIC转换器带交换模块(MSCSI)的扩展配置。通过用两个开关电感(SI)模块替换MSC的两个电感,得到了三种配置,即改进型SEPIC变换器与XYL配置(MSCSI-XYL),改进型SEPIC变换器与LYZ配置(MSCSI-LYZ)和改进型SEPIC变换器与XLZ配置(MSCSI-XLZ),以改善或增加变换器的整体增益。所提出的配置的关键特征是:(i)单开关拓扑结构,(ii)由于输入侧的大型电感,没有从负载到源的反向电流,(iii)高电压转换比。从元件数、电压转换比和效率三个方面对三种配置进行了详细的分析。数学分析和仿真结果验证了三种结构的功能。
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引用次数: 2
Radiated Wideband IEMI: Coupling Model and Worst-Case Analysis for Smart Grid Wiring Harness 辐射宽带IEMI:智能电网线束耦合模型及最坏情况分析
Tao Liang, G. Spadacini, F. Grassi, S. Pignari
The fast transition from the conventional electrical-energy infrastructures to the Smart Grid demands for an in-depth analysis of risks associated to Intentional Electromagnetic Interference (IEMI). In line with this aim, this work presents an approach for the prediction of the effects of wideband radiated IEMI in wire harness, based on a worst-case criterion. For a specified bandwidth and energy density, the waveform of the electromagnetic (EM) field is optimized so to maximize the peak value of the common-mode voltage induced at cable terminals. This solution depends on the unknown direction of incidence and polarization angle of the EM field. The worst-case rationale is therefore extended to the search for the extreme value of the induced peak voltage, which is reached in specific, unfavorable conditions of incidence and polarization, here investigated. Moreover, the impact of the main geometrical/electrical parameters of the wiring structure (length, height, impedances) is assessed.
从传统电力能源基础设施到智能电网的快速过渡要求对有意电磁干扰(IEMI)相关风险进行深入分析。根据这一目标,本工作提出了一种基于最坏情况准则的线束中宽带辐射IEMI影响预测方法。在一定的带宽和能量密度下,对电磁场波形进行优化,使电缆端子处的共模电压峰值达到最大。该解取决于未知的电磁场入射方向和偏振角。因此,最坏情况的基本原理扩展到寻找感应峰值电压的极值,该极值是在特定的入射和极化不利条件下达到的,这里进行了研究。此外,还评估了接线结构(长度、高度、阻抗)的主要几何/电气参数的影响。
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引用次数: 1
Potential Use of Reservoirs for Mitigating Saline Intrusion in the Coastal Areas of Red River Delta 在红河三角洲沿岸地区利用水库以减轻盐分入侵的可能性
N. Hien, R. Ranzi, V. M. Cát
The river flow in Red river delta though is very abundant during the high season is well faced with high potential of seawater intrusion in downstream areas due to huge water demand from upstream and invading seawater, also resulting from sea level rise. The operation of many reservoirs upstream has great effects on river regime and salinity dynamics at the downstream. The paper presents preliminary scenarios in utilizing reservoir operation to mitigate salt concentration and enhance the irrigation plan throughout the years. The increases of water release in the dry season from Hoa Binh reservoir have improved noticeably salinity downstream in most of the river networks. The thresholds of salinity were also indicated in order to support decision makings for reservoirs operation.
红河三角洲河道流量虽然在旺季非常丰富,但由于上游的巨大需水量和海水的入侵,以及海平面上升,下游地区面临着海水入侵的高潜力。上游许多水库的运行对下游的河情和盐度动态有很大的影响。本文提出了利用水库运行降低盐浓度和加强灌溉计划的初步设想。旱季和平水库放水量的增加使下游大多数河网的盐度明显改善。并给出了矿化度阈值,为水库运行决策提供了依据。
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引用次数: 2
Cell Battery Emulator for Hardware-in-the-Loop BMS Test 用于硬件在环BMS测试的电池模拟器
Luca Buccolini, S. Orcioni, S. Longhi, M. Conti
The battery management system (BMS) measures cells voltage, temperature and battery current, acting as security controller, monitoring and reporting the state of the battery and also balancing it. It must be accurately validated and tested before to use. The HiL test is the better solution to test it in order to develop algorithms in a fast way, to test the BMS board using a secure and reproducible way, and to simulate extreme condition of lithium cells. This work introduces the HiL test system defining its specifications. The challenge of HiL test on BMS is to replicate the behaviour of the lithium cells without using them. For this purpose, a battery cell emulator board is proposed and analysed. Some SPICE simulations were conducted at design stage and the result were compared with the defined specifications. The battery cell emulator, being isolated from the main power supply, can be used in series connection simulating higher voltage batteries in the HiL test of BMSs.
电池管理系统(BMS)测量电池电压、温度和电池电流,作为安全控制器,监测和报告电池的状态,并进行平衡。在使用前必须经过准确的验证和测试。为了快速开发算法,使用安全和可重复的方式测试BMS板,并模拟锂电池的极端条件,HiL测试是测试它的更好解决方案。本文介绍了HiL测试系统,并定义了测试系统的技术指标。在BMS上进行HiL测试的挑战是在不使用锂电池的情况下复制锂电池的行为。为此,提出并分析了一种电池仿真板。在设计阶段进行了SPICE仿真,并将仿真结果与设计规范进行了比较。电池仿真器与主电源隔离,可在bms的HiL试验中串联模拟高压电池。
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引用次数: 7
Open-Phase Resonance in Shunt-Compensated AC Cable Lines 并联补偿交流电缆线路的开相谐振
F. Gatta, A. Geri, S. Lauria, M. Maccioni, F. Palone, L. Buono
Shunt-compensated ac cable lines (CLs) are a commonly used solution for the connection of renewable energy sources, such as offshore or onshore windfarms. Three phase shunt reactors allow for a cheap and reliable compensation of the surplus reactive power generated by the power cables; however, the interphase magnetic coupling can introduce open phase resonance phenomenon, which is normally not expected to occur in underground CLs, which do not have any electrostatic coupling. Theoretical formulae for evaluating the risk of open-phase resonance in shunt compensated CLs are presented in the paper, as well as steady-state and time domain simulations using detailed cable and shunt reactor models.
并联补偿交流电缆线路(CLs)是连接可再生能源(如海上或陆上风电场)的常用解决方案。三相并联电抗器允许廉价和可靠的补偿电力电缆产生的多余无功功率;然而,相间磁耦合会引入开相共振现象,这在地下CLs中通常不会发生,因为地下CLs不存在任何静电耦合。本文给出了评估并联补偿电抗器中开相谐振风险的理论公式,并使用详细的电缆和并联电抗器模型进行了稳态和时域仿真。
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引用次数: 0
Sensorless Control of Brushless DC Motor by Zero-Crossing Detection Pulse Generation with Adaptive Power Factor Control Technique 基于自适应功率因数控制技术的过零检测脉冲无刷直流电动机无传感器控制
Farhan Ahmad, M. Pandey, Mohammad Zaid
As the ever-growing art of technology in the field of motor's speed control, the various kinds of methods have been introduced. This research work presents the Sensorless control of the brushless DC motor by finding out the virtual hall signal by determining the zero crossing point in the line voltage. The flip-flop has been employed to generate the virtual hall signal corresponding to the zero crossing points which represent the position of the rotor and starts the commutation. The conventional methods of speed control of the brushless DC motor have numerous setbacks and also very intricate in implementation. This work has introduced a very deep overview of the state-of-the-art sensorless control technique and the integration of the power factor correction into the sensorless control of BLDC motor.
作为一门不断发展的技术艺术,在电机的速度控制领域,各种各样的方法已经被引入。本文提出了一种无刷直流电动机的无传感器控制方法,即通过确定线路电压的过零点来找出虚霍尔信号。该触发器产生对应于表示转子位置的零交叉点的虚拟霍尔信号,并启动换相。传统的无刷直流电动机调速方法存在诸多弊端,实现起来也十分复杂。这项工作非常深入地介绍了最先进的无传感器控制技术,并将功率因数校正集成到无刷直流电机的无传感器控制中。
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引用次数: 2
Off-Grid System Evaluation in the Distribution Network 配电网中的离网系统评价
Aleksandrs Gavrilovs, R. Varfolomejeva
In the European countries, there is a tendency of partly replacing centralized generation with distributed generation. By supplementing distributed generation with an electricity storage system, power companies, along with the usual power supply services, may offer new power supply solutions to their customers. One of such services is the provision of off-grid power supply solutions. Off-grid systems are usually important in rural territories where electricity consumers are scattered and the electricity consumption is low since for entities of this type, providing a power supply connection to the public distribution network requires large capital investments. The article proposes a life cycle cost evaluation model for selecting the most economically advantageous technical solution: setting up an off-grid system or constructing a connection to the public network by building a long power transmission line.
在欧洲国家,有一种用分布式发电部分取代集中式发电的趋势。通过用电力存储系统补充分布式发电,电力公司与通常的供电服务一起,可以为客户提供新的供电解决方案。其中一项服务是提供离网供电解决方案。离网系统在电力消费者分散、电力消耗低的农村地区通常很重要,因为对这种类型的实体来说,向公共配电网提供电力供应连接需要大量的资本投资。本文提出了一个生命周期成本评估模型,以选择最具经济效益的技术方案:建立离网系统或通过建设长输电线与公共网络连接。
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引用次数: 0
Composite Indicators for Smart Campus: Data Analysis Method 智慧校园综合指标:数据分析方法
L. Pompei, B. Mattoni, F. Bisegna, F. Nardecchia, A. Fichera, A. Gagliano, A. Pagano
The concept of Smart Campus started developing in the last years as a possible adaptation of the Smart city model to the university campuses. The transformation of a standard campus into a Smart Campus requires the development of an evaluation framework which allow to assess the state of the art by means of composite indicators. Following a new methodology, the aim of this project is to define a global set of indicators. Those composite indicators describe each aspect of the campus: (economic, energy environmental and social issues) in order to give a complete and holistic evaluation. The application on a real case study show the flexibility of this model.
智慧校园的概念在过去几年开始发展,作为智慧城市模式对大学校园的一种可能的适应。标准校园向智慧校园的转变需要开发一个评估框架,该框架允许通过复合指标来评估最先进的状态。按照一种新的方法,该项目的目的是确定一套全球指标。这些综合指标描述了校园的各个方面:(经济,能源,环境和社会问题),以便给出一个完整和全面的评价。实例研究表明了该模型的灵活性。
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引用次数: 13
Discrete Wavelet Analysis of Supra-Harmonic Emissions in Smart Grid (PV Inverter Implementation) 智能电网超谐波发射的离散小波分析(光伏逆变器实现)
T. Yalcin, M. Ozdemir, P. Kostyła, Zbigniew Leonowicz
Power line communication on smart grids installation with distributed energy resources (DER) produces electrical noise that may have a serious impact during communication. Also a high level of electrical noise may cause fault measurement and generation of control data may lead to the loss. One of the crucial problems in the steady operation of distribution networks, in the frequency range 2–150 kHz harmonic emissions or supra-harmonics (SH). In this study, the results of experimental studies demonstrate the origin of these distortions. The proposed discrete wavelet transformation method can help to find a solution for SH components.
分布式能源智能电网的电力线通信会产生电噪声,对通信产生严重影响。此外,高水平的电气噪声可能导致测量故障和控制数据的产生,可能导致损失。配电网稳定运行的关键问题之一,是2 ~ 150khz频率范围内的谐波发射或超谐波(SH)。在本研究中,实验研究的结果证明了这些扭曲的起源。所提出的离散小波变换方法可以帮助找到SH分量的解。
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引用次数: 2
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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