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2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)最新文献

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Unified load flow analysis for emerging distribution systems 新兴配电系统的统一潮流分析
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638877
E. M. Lourenço, Tarcisio Loddi, O. L. Tortelli
This paper proposes a unified load flow analysis for transmission and distribution systems, based on the fast decoupled power flow method (FDPF). The method is centered on an extension of the conventional per unit normalization to circumvent the problems caused by low X/R ratio faced by distribution systems. The proposed extension establishes a complex voltampere basis. A properly definition of the base angle can adequate the X/R ratio of distribution systems as for instance the axis rotation previously presented in the technical literature. This paper also proposes a simple procedure that allows the utilization of different base angles for different parts of an interconnected system, so that conventional FDPF can be used to determine power flow solution of interconnected T&D systems in off line studies. Simulation results are conducted through IEEE standard test feeders, a south Brazilian distribution system and an interconnected T&D test system. Several operation conditions, including specific situations, such as closed ring operation of distribution systems, were simulated to evaluate the proposed approach.
本文提出了一种基于快速解耦潮流法(FDPF)的输配电系统统一潮流分析方法。该方法的核心是对传统的单位归一化的扩展,以避免配电系统面临的低X/R比所带来的问题。拟议的扩展建立了一个复杂的伏安基础。基角的适当定义可以满足分配系统的X/R比,例如先前在技术文献中提出的轴旋转。本文还提出了一个简单的程序,允许对互联系统的不同部分使用不同的基角,以便在离线研究中使用传统的FDPF来确定互联输配电系统的潮流解。仿真结果通过IEEE标准测试馈线、巴西南部配电系统和互联输配电测试系统进行。模拟了几种运行工况,包括配电系统的闭环运行等具体情况,对所提出的方法进行了评价。
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引用次数: 12
PMU-based multi-area state estimation with low data exchange 基于pmu的低数据交换多区域状态估计
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638962
G. Valverde, V. Terzija
The paper proposes a novel multi-area state estimator based on wide area measurements where only boundary buses are considered in the coordination level. The power injection measurements are not used during the coordination level reducing the number of states and therefore size of the problem. Instead, a set of pseudo-measurements are included whenever a power injection measurement is available in boundary buses. The proposed method was validated using the IEEE 300 bus system split into 7 different areas.
本文提出了一种基于广域测量的多区域状态估计方法,该方法在协调层面只考虑边界总线。在协调级别中不使用功率注入测量,从而减少了状态的数量,从而减小了问题的大小。相反,只要边界总线中有功率注入测量,就包括一组伪测量。采用IEEE 300总线系统对该方法进行了验证,该系统分为7个不同的区域。
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引用次数: 11
Experience on the implementation of a microgrid project in Barcelona 巴塞罗那微电网项目的实施经验
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638996
Manuel Roman-Barri, I. Cairó, A. Sumper, A. Sudriá-Andreu
This paper deals with the implementation of a operating microgrid based on current real and emulated energy resources which permits the experimentation of various scenarios. This microgrid is able to adapt to different sorts of energy sources, loads and storage devices, and to critical situations that, with testing and emulation, can improve performances. The microgrid is implemented with real time data acquisition systems, communications (such as IEC 61850), and intelligent electronics peripheral equipment. Block diagrams, showing implementation using power electronics along with corresponding results, are shown for better understanding. Implementation and experimentation with the microgrid under investigation will improve future research on microgrid and smartgrid projects.
本文讨论了基于当前真实和模拟能源资源的可操作微电网的实现,该微电网允许各种场景的实验。这种微电网能够适应不同类型的能源、负载和存储设备,以及通过测试和仿真可以提高性能的关键情况。微电网由实时数据采集系统、通信(如IEC 61850)和智能电子外围设备实现。为了更好地理解,图中显示了使用电力电子器件的实现以及相应的结果。正在研究的微电网的实施和实验将改善未来对微电网和智能电网项目的研究。
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引用次数: 36
Active distribution network — Demonstration project ADINE 活跃的配电网-示范项目ADINE
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638988
O. Samuelsson, S. Repo, R. Jessler, J. Aho, Matti Kärenlampi, A. Malmquist
Since Distributed Generation (DG) often involves renewable energy, it is important to facilitate integration of DG into existing networks. This is the aim of the EU FP6 demonstration project ADINE. It is based on the Active Network Management (ANM) concept, where automation, ICT and power electronics are used to integrate more DG by exploiting active resources instead of just reinforcing the network. The resources are mobilized through ancillary services or requirements. Five enabling solutions within ANM are pushed forward in the project: Protection relay and fault location applications, coordinated protection planning, voltage control with microturbine, centralized voltage control with SCADA/DMS and a new STATCOM. All these are demonstrated in real-life. Finally the performance of each technical solution during conditions with large amounts of DG are analyzed using a real-time simulation environment with RTDS/dSPACE. Introducing appropriate parts of the ANM concept will permit connection of more DG in distribution networks.
由于分布式发电(DG)通常涉及可再生能源,因此促进DG与现有网络的整合非常重要。这就是欧盟FP6示范项目ADINE的目标。它以主动网络管理(ANM)概念为基础,利用自动化、信息通信技术(ICT)和电力电子技术,通过开发主动资源来整合更多的DG,而不仅仅是加强网络。通过辅助服务或需求来调动资源。ANM在项目中推出了五个使能解决方案:保护继电器和故障定位应用,协调保护规划,微型涡轮机电压控制,SCADA/DMS集中电压控制和新的STATCOM。所有这些都在现实生活中得到了证明。最后,利用RTDS/dSPACE实时仿真环境,分析了各技术方案在大量DG条件下的性能。引入ANM概念的适当部分将允许在配电网中连接更多的DG。
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引用次数: 51
Smart distribution protection using current-only directional overcurrent relay 智能配电保护采用电流单向过流继电器
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638909
A. Ukil, B. Deck, V. H. Shah
Overcurrent relays are widely used for power systems protection. Transmission side uses more directional type relays, while distribution systems, e.g., radial and ring-main subtransmission systems use non-directional types. The fault direction may be forward (between relay and grid), or reverse (between relay and source), the normal power flow being from source to the grid. Traditional directional overcurrent relays utilize the reference voltage phasor for estimating the direction of the fault. This requires measurement of both current and voltage using respective sensors. This makes the directional overcurrent relays more costly than the non-directional type. In this paper, a novel current-only directional detection possibility is highlighted along with theoretical and test signal analysis. Possible utilization of the current-only directional relay for intelligent directional protection in the distribution systems are described. Directional protection for distribution systems is a key focus area for enabling the smart grid.
过流继电器广泛用于电力系统保护。传输侧更多地使用定向型继电器,而配电系统,例如径向和环主子传输系统则使用非定向型继电器。故障方向可以是正向(继电器和电网之间),也可以是反向(继电器和电源之间),正常的潮流是从电源到电网。传统的定向过流继电器利用参考电压相量来估计故障的方向。这需要使用各自的传感器测量电流和电压。这使得定向过流继电器比非定向过流继电器更昂贵。本文提出了一种新的纯电流定向检测方法,并进行了理论分析和测试信号分析。描述了纯电流定向继电器在配电系统中用于智能定向保护的可能用途。配电系统的定向保护是实现智能电网的一个重点领域。
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引用次数: 37
Operating conditions forecasting for monitoring and control of electric power systems 电力系统运行状态预测的监测与控制
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638934
N. Voropai, A. Glazunova, V. Kurbatsky, D. N. Sidorov, V. Spiryaev, N. Tomin
Two approaches are proposed for short-term forecast of the parameters of expected operating conditions. The Kalman filter based algorithms and the modern technologies of an artificial intelligence and nonlinear optimization algorithms are employed for dynamical state estimation. The new approach combining the artificial neural networks and the Hilbert-Huang transform is designed in order to increase the accuracy of operating conditions forecasting. Numerical experiments on real time series have demonstrated the improvement of the prediction.
提出了两种对预期工况参数进行短期预测的方法。采用基于卡尔曼滤波的算法和现代人工智能技术及非线性优化算法进行动态估计。为了提高运行工况预测的精度,设计了将人工神经网络与Hilbert-Huang变换相结合的新方法。在实时时间序列上的数值实验证明了该预测方法的有效性。
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引用次数: 4
PowerMatching City, a living lab smart grid demonstration PowerMatching City,一个生活实验室智能电网示范
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638863
F. Bliek, Albert van de Noort, B. Roossien, R. Kamphuis, J. D. Wit, Jörgen van der Velde, M. Eijgelaar
PowerMatching City is a living lab Smart Grid demonstration in the Netherlands consisting of 25 interconnected households (phase-I). It focuses on the development of a market model for intelligent network operation under normal market conditions that allows simultaneous in-home optimization (pro-sumer), technical coordination (distribution system operator) and commercial coordination (balance responsible). The coordination mechanism, provided by the agent based PowerMatcher technology, is extended to allow these simultaneous optimizations. Mature smart grids require a transparent coordination mechanism which allows various energy sources and appliances to be interconnected on a non-segregated and plug-in basis. It should seamlessly combine distributed generation with demand response. A generic design has been developed that allows seamless coordination of hybrid heat pumps, µ-CHPs, electric cars, smart appliances such as freezers, washing machines etc. in a single ICT solution. End-user acceptance is guaranteed by advanced comfort control mechanisms and monitored in a participating design program.
PowerMatching City是荷兰的一个生活实验室智能电网示范项目,由25个互联家庭组成(第一阶段)。它侧重于在正常市场条件下开发智能网络运行的市场模型,允许同时进行家庭优化(亲消费者),技术协调(配电系统运营商)和商业协调(平衡责任)。由基于代理的PowerMatcher技术提供的协调机制被扩展为允许这些同步优化。成熟的智能电网需要一个透明的协调机制,允许各种能源和设备在非隔离和插电的基础上相互连接。它应该无缝地将分布式发电与需求响应结合起来。一种通用设计已经开发出来,可以在单一的ICT解决方案中无缝协调混合热泵、微热电联产、电动汽车、冰箱、洗衣机等智能电器。先进的舒适控制机制保证了最终用户的接受程度,并在参与设计程序中进行监控。
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引用次数: 120
Cause-and-effect relationships affecting distribution loss management 影响配电损耗管理的因果关系
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638978
Z. Ghofrani-Jahromi, M. Ehsan, M. Masjed-Jamei
There are a lot of parameters which are decisive in distribution loss management, such as demand value, energy price, etc. In this paper the cause-and-effect relationships among some of these variables are clearly described. The study demonstrates how a variable in the model will change, if an alteration in one of the other variables occurs. The power system variables considered in this study include energy and loss prices, generation and demand values, distribution loss, distribution system age, number of customers connected to the smart grid, distribution network revenue, and so forth. The smart grid impacts can be studied from two different aspects: 1) the communication infrastructure available throughout the smart grid increases the speed at which different system parameters are changed due to a change in a specific parameter and 2) the end-users have more control over what happens to the whole distribution system. A graphical representation technique, called “Causal Loop Diagram”, is employed in order to illuminate the cause-and-effect relationships among variables. This kind of study helps us to acquire a comprehensive understanding of the whole distribution system from the loss perspective. The survey involves studying the effects both on the distribution management system and the end-users.
在配电网损耗管理中,有许多具有决定性的参数,如需求值、能源价格等。本文清楚地描述了这些变量之间的因果关系。该研究表明,如果其他变量中的一个发生变化,模型中的一个变量将如何变化。本研究中考虑的电力系统变量包括能源和损耗价格、发电和需求值、配电损耗、配电系统年龄、接入智能电网的客户数量、配电网络收益等。智能电网的影响可以从两个不同的方面来研究:1)整个智能电网中可用的通信基础设施增加了由于特定参数变化而导致不同系统参数变化的速度;2)最终用户对整个配电系统的变化有了更多的控制权。为了阐明变量之间的因果关系,采用了一种称为“因果循环图”的图形表示技术。这种研究有助于我们从损失的角度对整个配电系统有一个全面的认识。调查包括研究对配电管理系统和最终用户的影响。
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引用次数: 0
Leveraging the next-generation power grid: Data sharing and associated partnerships 利用下一代电网:数据共享和相关伙伴关系
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5639001
Daniel Germanus, I. Dionysiou, K. H. Gjermundrød, Abdelmajid Khelil, N. Suri, D. Bakken, C. Hauser
Data delivery in the power grid today is, for the most part, hard-coded, tedious to implement and change, and does not provide any real end-to-end guarantees. Applications have started to emerge that require real-time data delivery in order to provide a wide-area assessment of the health of the power grid. This paper presents two novel communication infrastructures that facilitate the delivery of power data to intended recipients, each based on a different communication paradigm. The necessity of forming and managing trusted partnerships in either framework is further discussed.
今天电网中的数据传输在很大程度上是硬编码的,实现和更改都很繁琐,并且不能提供任何真正的端到端保证。需要实时数据传输的应用程序已经开始出现,以便提供对电网健康状况的广域评估。本文提出了两种新的通信基础设施,它们都基于不同的通信范式,促进了电力数据向预期接收方的传输。进一步讨论了在这两种框架下建立和管理可信伙伴关系的必要性。
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引用次数: 13
Fast compensation of current transformer saturation 快速补偿电流互感器饱和
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638931
D. Shi, J. Buse, Q. Wu, Lin Jiang
This paper presents a novel method for current transformer (CT) saturation detection and compensation. In the method, CT saturation characteristics are represented by a partial nonlinear regression model. The parameters of this model can be estimated rapidly and accurately using both unsaturated and saturated sections of the waveform of a secondary fault current, even in a heavy saturation scenario, where the fault waveform is severely distorted. To reduce the computational load of the estimation, separable nonlinear least squares (SNLLS) method is used to separates the linear and nonlinear parameters of the model, thus reducing the complexity of the estimation. With the fast and accurate parameter estimation, the method can be used for real-time protective relaying. The method has been evaluated on the data obtained from PSCAD/EMTDC simulation. The analysis of the test results shows that the proposed method has superior performance than that offered by conventional compensation algorithms.
提出了一种电流互感器饱和检测与补偿的新方法。该方法采用局部非线性回归模型来表示CT饱和特性。该模型的参数可以利用二次故障电流波形的不饱和和饱和剖面快速准确地估计出来,即使在故障波形严重失真的重饱和情况下也是如此。为了减少估计的计算量,采用可分离非线性最小二乘(SNLLS)方法将模型的线性和非线性参数分离,从而降低估计的复杂度。该方法具有快速准确的参数估计,可用于实时保护。通过PSCAD/EMTDC仿真数据对该方法进行了验证。测试结果分析表明,该方法具有优于传统补偿算法的性能。
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引用次数: 15
期刊
2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)
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