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

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Operational Risk Assessment and control: A probabilistic approach 操作风险评估与控制:一种概率方法
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638975
E. Ciapessoni, D. Cirio, S. Grillo, S. Massucco, A. Pitto, F. Silvestro
Probabilistic Risk Assessment (PRA) techniques are raising more and more interest in the context of the operation of high voltage transmission networks because they represent a new approach to the security assessment in power system operation. The classical deterministic methods, which compare the power system performance to a predefined set of requirements (e.g. no current and voltage violations, no stability problems), do not take into account the probability of occurrence and the magnitude of events and do not perform a quantitative characterization of the impact of the contingencies. The fulfillment of the security requirements also for the most critical contingencies determines large security margins, thus higher operational and planning costs. On the other hand the risk of other contingencies may be underestimated. The paper starts by illustrating a methodology to assess the risk of loss of load caused by conventional (N-1) or multiple dependent contingencies resulting into a cascading process. A control strategy is then introduced, aimed to reduce operational risk by optimal preventive redispatching of conventional generators. Simulation results of the application of the approach to an IEEE test system and to a model of the Italian EHV transmission grid are illustrated and discussed.
概率风险评估(PRA)技术代表了一种新的电力系统运行安全评估方法,在高压输电网运行环境中受到越来越多的关注。经典的确定性方法将电力系统性能与预定义的一组要求(例如,无电流和电压违规,无稳定性问题)进行比较,没有考虑到事件发生的概率和事件的大小,也没有对突发事件的影响进行定量表征。对最关键突发事件的安全需求的满足也决定了较大的安全余量,从而提高了操作和规划成本。另一方面,其他突发事件的风险可能被低估了。本文首先阐述了一种方法来评估由常规(N-1)或多个相关偶然事件导致级联过程引起的负载损失风险。提出了一种控制策略,旨在通过对常规发电机进行最优预防性再调度来降低运行风险。并对该方法在IEEE测试系统和意大利超高压输电网模型中的应用进行了说明和讨论。
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引用次数: 16
Impact of phase-imbalanced series capacitive compensation on the transient recovery voltage 相不平衡串联电容补偿对暂态恢复电压的影响
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5639000
S. Faried, M. Elsamahy, A. Edris, Saleh Al-Amr
This paper explores the impact of phase-imbalanced series capacitive compensation schemes on the Transient Recovery and Rate of Rise of Recovery voltages of high-voltage circuit breakers in series capacitive compensation transmission systems. The paper presents a comparison between the TRV and RRRV levels in both phase-imbalanced and symmetrical series capacitive compensations for different fault types and locations. Time-domain simulation studies were performed using the EMTP-RV.
探讨了相不平衡串联电容补偿方案对串联电容补偿输电系统中高压断路器暂态恢复和恢复电压上升速率的影响。本文比较了在不同故障类型和位置下,相不平衡和对称串联电容补偿的TRV和RRRV电平。使用EMTP-RV进行时域仿真研究。
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引用次数: 0
Using 1kV low voltage distribution for connection of plug-in vehicles 采用1kV低压配电连接插电式汽车
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638868
David Söderberg, Henrik Engdahl
Using 1kV as an intermediate voltage within the electric distribution system can be a cost efficient method for reinforcing the low voltage network when loads increase due to plug-in vehicles. This paper presents cost comparisons between different network reinforcement methods including different system typologies for the 1kV system. An estimation of network reinforcements needed in Sweden for domestic houses have also been conducted. Further on, different types of transformers for the 1kV system are descried. The 1kV system is especially suitable when the voltage on existing cable can be raised from 0.4kV to 1kV. This is possible for most modern low voltage cables. Examples of applications of 1kV systems are connection of car parks with charging equipment for plug-in vehicles and rural houses with a low short circuit power.
在电力分配系统中使用1kV作为中间电压是一种经济有效的方法,当负载因插电式汽车而增加时,可以加强低压网络。本文介绍了1kV系统不同类型的网络加固方法的成本比较。还对瑞典国内住宅需要加强的网络进行了估计。进一步介绍了1kV系统中不同类型的变压器。当现有电缆上的电压可以从0.4kV提高到1kV时,1kV系统特别适用。对于大多数现代低压电缆来说,这是可能的。1kV系统的应用实例包括停车场与插电式车辆充电设备的连接,以及具有低短路功率的农村房屋。
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引用次数: 3
Availability of a SCADA/OMS/DMS system — A case study SCADA/OMS/DMS系统的可用性-一个案例研究
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638912
Martin Jensen, Cumhur Sel, U. Franke, Hannes Holm, L. Nordström
With the advent of the smart grid, new challenges arise for electricity distribution. In particular, reliable power distribution will become evermore dependent upon information and communication technology (ICT). With this increasing dependency comes a need for a deeper understanding of the availability of those ICT components that maintain the power grid. This paper presents a study in which all components of a supervisory control and data acquisition (SCADA), Outage Management (OMS) and Distribution Management (DMS) system at a power utility are analyzed from an availability perspective, identifying the parts of the system that contribute the most to overall system downtime. Furthermore, the case study involves a downsizing regarding the IT system architecture redundancy. This downsizing makes it very interesting to investigate how hardware redundancy relates to the overall SCADA/OMS/DMS system availability. Such knowledge is required to assess the rationality of the architectural restructuring decision, as well as for more general rational decision making when it comes to the ICT components of the power distribution grid. It is concluded that even in the new architecture, the remaining hardware redundancy level is enough. Instead, it is found that most of the downtime of the SCADA/OMS/DMS system is caused by failing software, causing all the redundant hardware to become unavailable at the same time. Since the software is a third party piece from the supplier of the system, one important source of downtime can be seen as emanating from the requirements and procurement process of the company.
随着智能电网的出现,配电面临新的挑战。特别是,可靠的电力分配将越来越依赖于信息和通信技术(ICT)。随着这种依赖性的增加,需要更深入地了解维护电网的ICT组件的可用性。本文介绍了一项研究,该研究从可用性的角度分析了电力公司的监控和数据采集(SCADA),停电管理(OMS)和配电管理(DMS)系统的所有组件,确定了系统中对整个系统停机时间贡献最大的部分。此外,案例研究还涉及到IT系统架构冗余的缩减。这种精简使得研究硬件冗余与整个SCADA/OMS/DMS系统可用性之间的关系变得非常有趣。这样的知识是评估架构重组决策的合理性所必需的,当涉及到配电网的ICT组件时,也需要更普遍的理性决策。结果表明,即使在新的体系结构中,剩余的硬件冗余水平也是足够的。相反,我们发现SCADA/OMS/DMS系统的大部分停机是由软件故障引起的,导致所有冗余硬件同时不可用。由于软件是来自系统供应商的第三方部件,因此停机时间的一个重要来源可以被视为来自公司的需求和采购过程。
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引用次数: 14
Demand-side behavior in the smart grid environment 智能电网环境下的需求侧行为
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638956
A. Moshari, G. Yousefi, A. Ebrahimi, S. Haghbin
Recent developments in traditional power systems which involve emerging smart technologies and widely employing of communication will convert the present electricity grids into the smart grids. The future smart and efficient power systems will treat completely different compare with the existing power systems. This paper discusses the effect of emerging smart grids on the consumer's behavior. It investigates the responses of different types of consumers to the spot electricity price and the price elasticity of demand in the smart grid environment. Smart technologies could bring all of the consumers with any level of demand to the market actively, and results in increasing the efficiency of the market in a fully competitive electricity market. This paper also describes the effect of Demand Response (DR) on some electricity market issues like short-term load and price forecasting, generation expansion, and imperfect competition, in the smart grid environment. The qualitative discussions show that by emerging the smart grids the market efficiency, costumer's benefits, and Demand Response of the power system are improved and the ability of strategic players to exert market power will be reduced.
随着传统电力系统的发展,新兴的智能技术和通信技术的广泛应用将使现有电网向智能电网转变。未来的智能高效电力系统将与现有的电力系统完全不同。本文讨论了新兴智能电网对消费者行为的影响。研究了智能电网环境下不同类型消费者对现货电价的反应以及需求的价格弹性。智能技术可以将所有有任何需求水平的消费者积极带入市场,从而在充分竞争的电力市场中提高市场效率。本文还讨论了在智能电网环境下,需求响应(DR)对短期负荷和价格预测、发电扩张、不完全竞争等电力市场问题的影响。定性讨论表明,智能电网的出现提高了电力系统的市场效率、用户利益和需求响应,降低了战略参与者发挥市场力量的能力。
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引用次数: 48
Renewable energy resources in energy management systems 能源管理系统中的可再生能源
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5639003
E. Goutard
In response to the ever increasing amount of Renewable Energy Resources production integrated in Power Systems, Energy Management Systems (EMS) used for decades in control centers to manage power flows need to adapt. This paper aims at providing detailed understanding of impacts on “standard” EMS functions of these new sources of productions. This paper will first highlight the characteristics of Renewable Energy Resources production. It will then focus on structuring all the modules of an EMS which need functional adaptation, extension or new applications to tackle these new game changers. A deep dive on several detailed functional aspects is then presented which highlights several areas such as production forecast management and integration, generation control, network security analysis and advanced user interface.
为了应对电力系统中集成的可再生能源产量的不断增加,几十年来在控制中心用于管理潮流的能源管理系统(EMS)需要进行调整。本文旨在详细了解这些新产品来源对“标准”EMS功能的影响。本文将首先突出可再生能源生产的特点。然后,它将专注于构建EMS的所有模块,这些模块需要功能调整、扩展或新的应用程序来解决这些新的游戏规则改变者。然后对几个详细的功能方面进行了深入探讨,重点介绍了几个领域,如生产预测管理和集成、发电控制、网络安全分析和高级用户界面。
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引用次数: 16
An extensive study of dynamic behavior of Iranian power network 伊朗电网动态行为的广泛研究
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638989
A. Iravani, M. Karrari
Since phasor measurement units (PMUs) are being deployed in power systems, many different applications of such devices are being studied even before they are actually being employed. This paper documents an extensive study on dynamic behavior of the Iranian power system based on eigenvalue and participation factor analysis. The main problem with eigenvalue analysis is that because power systems are highly nonlinear, the result much depends on the operating conditions and the contingency. To overcome this shortcoming some have suggested complicated nonlinear theories, such as Lyapunov functions. Such approaches are not much applicable for such large scale systems. In this study first four different accurate models of the Iran power system, based on a particular loads and generations at four different seasons of 2009, have been developed. Then based on most recorded events, different scenarios are simulated in Iran Power systems and based on eigenvalue analysis the oscillatory modes have been identified. Then the generators which affect the dominant roots are determined by the summation of all the participation factors at different events and at the four models. Fine tuning of installed power system stabilizers of these generators shows a considerable improvement in dynamic behavior of the system at different operating conditions.
由于相量测量单元(pmu)正在电力系统中部署,因此在实际使用之前,正在研究这种设备的许多不同应用。本文基于特征值和参与因子分析对伊朗电力系统的动态行为进行了广泛的研究。特征值分析的主要问题是由于电力系统是高度非线性的,其结果很大程度上取决于运行条件和偶然性。为了克服这个缺点,有些人提出了复杂的非线性理论,如李亚普诺夫函数。这种方法不太适用于如此大规模的系统。在这项研究中,首先基于2009年四个不同季节的特定负荷和代数,开发了伊朗电力系统的四个不同的精确模型。在此基础上,对伊朗电力系统进行了不同情景的模拟,并基于特征值分析确定了系统的振荡模态。然后通过对不同事件和四种模型下的所有参与因子的总和确定影响主导根的产生因子。对已安装的电力系统稳定器进行微调后,系统在不同工况下的动态性能有了较大的改善。
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引用次数: 0
Impacts of battery charging rates of Plug-in Electric Vehicle on smart grid distribution systems 插电式电动汽车电池充电速率对智能电网配电系统的影响
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638981
A. S. Masoum, S. Deilami, P. Moses, A. Abu‐Siada
Plug-in Electric Vehicles (PEVs) will be an integral part of smart grids in the near future. This paper studies the impacts of different PEV battery charging profiles on the performance of smart grid distribution systems. PEVs are already growing in popularity as a low emission mode of transport versus conventional petroleum based vehicles. Utilities are becoming concerned about the potential stresses and overloads that may occur with multiple domestic PEV charging activity. Smart grids will play an important role in PEV operation because the battery chargers can be coordinated by the utility and harnessed for storing surplus grid energy and reused to support the grid during peak times. Therefore, an analysis is performed for a smart grid distribution system to demonstrate the impacts of different PEV charging scenarios. The paper compares charging rates (e.g., slow, medium and fast charging), PEV penetration levels as well as different charging periods over a 24 hour period considering existing system load profiles, and evaluates the overall performance of the distribution system. The impact on system load profile, total losses, transformer loading and voltage profile is examined.
在不久的将来,插电式电动汽车(pev)将成为智能电网的一个组成部分。研究了不同的电动汽车充电方式对智能电网配电系统性能的影响。pev作为一种低排放的交通工具,与传统的石油汽车相比,已经越来越受欢迎。公用事业公司越来越担心国内多个电动汽车充电活动可能产生的潜在压力和过载。智能电网将在电动汽车运行中发挥重要作用,因为电池充电器可以由公用事业公司协调,用于存储多余的电网能量,并在高峰时段重新使用以支持电网。因此,对智能电网配电系统进行了分析,以演示不同电动汽车充电方案的影响。本文比较了24小时内的充电速率(如慢速、中速和快速充电)、PEV渗透率水平以及考虑现有系统负载概况的不同充电周期,并评估了配电系统的整体性能。研究了对系统负荷分布、总损耗、变压器负荷和电压分布的影响。
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引用次数: 103
Ultra-fast DC-charge infrastructures for EV-mobility and future smart grids 用于电动汽车和未来智能电网的超快速直流充电基础设施
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638899
D. Aggeler, F. Canales, H. Z. L. Parra, A. Coccia, Nick Butcher, O. Apeldoorn
Nowadays Power Electronics (PE) is entering more and more in technology which traditionally belongs to different engineering disciplines. E-mobility is one of these. Power Electronics in fact imposes itself as an emerging technology to enhance sustainable mobility, addressing all the engineering aspects starting from energy distribution for charging purposes until energy transformation on board of the traction related vehicles. This paper in particular focuses on newly developed PE infrastructure technologies enabling fast battery charging processes. Depending on the battery and vehicle type, a recharge sufficient for a travel range of more than 100km in less than 10 min is readily achievable. As battery technologies continuously advance, recharging will become available with the speed and simplicity of a today's fuel stop. Two PE converter architectures for recharging infrastructure applications will be presented and discussed based on both low-frequency (LF) and high-frequency (HF) isolation requirements. Technical evaluation of the two different technologies will be addressed and presented, including a pro- and contra analysis. The impact on the grid is studied by means of simulation with the assumption of a dc fast charging station placed in a rural area in Sweden.
电力电子技术在传统上属于不同工程学科的技术领域越来越多。电动交通就是其中之一。事实上,电力电子技术是一项新兴技术,旨在增强可持续移动出行能力,解决从充电能源分配到牵引相关车辆上的能源转换的所有工程问题。本文特别关注新开发的PE基础设施技术,使电池快速充电过程。根据电池和车辆类型的不同,在不到10分钟的时间内充电足以行驶100公里以上是很容易实现的。随着电池技术的不断进步,充电将变得像今天的停车加油一样快捷和简单。基于低频(LF)和高频(HF)隔离要求,将介绍和讨论用于充电基础设施应用的两种PE转换器架构。这两种不同技术的技术评价将被讨论和介绍,包括赞成和反对的分析。以瑞典农村地区的直流快速充电站为例,通过仿真研究了对电网的影响。
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引用次数: 248
Smart city — Platform for emergent phenomena power system testbed simulator 智慧城市——电力系统应急现象试验台模拟器平台
Pub Date : 2010-11-18 DOI: 10.1109/ISGTEUROPE.2010.5638890
L. Lugaric, S. Krajcar, Z. Šimić
Due to climate change issues, fossil fuel depletion and increasing economic pressure, "smart" cities will have significantly altered physical, social and economic systems, built upon smart infrastructure. Key infrastructure is energy, with focus on electricity. The paradigm of physical, data transfer and information flow layers of the smart city power grid is shown. Challenges of the new urban development arising from the presented paradigm of the future power grid are defined and tools for approach to creation of an testbed simulator with respect to new hazards defined. The goal is to create a platform for analyzing emergent phenomena in future power systems, based the electricity infrastructure of a smart city.
由于气候变化问题、化石燃料枯竭和日益增加的经济压力,“智能”城市将在智能基础设施的基础上显著改变物理、社会和经济系统。关键的基础设施是能源,重点是电力。展示了智慧城市电网的物理层、数据传输层和信息流层范式。本文定义了未来电网范例所带来的新城市发展的挑战,并定义了针对新危害创建试验台模拟器的方法工具。其目标是创建一个平台,以智能城市的电力基础设施为基础,分析未来电力系统中的突发现象。
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引用次数: 50
期刊
2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)
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