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An integrated control for overvoltage mitigation in the distribution network 配电网过电压缓解的综合控制
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028903
V. Mansoor, P. Nguyen, W. Kling
Increasing share of distributed renewable energy sources (DRES) in the distribution network raises new operational and power quality challenges like overvoltage in the network feeders. Such power quality challenge limits the penetration of DRES in the distribution network. This paper addresses a communication independent droop control, a communication dependant fast control and proposes an integrated control for mitigating overvoltage in the LV distribution network. The two layer integred control consists of droop control and fast control. Proposed integrated control tries to equalise power curtailment, among inverters in a radial network.
分布式可再生能源(DRES)在配电网中所占的份额越来越大,这给电网馈线的过电压等运行和电能质量带来了新的挑战。这样的电能质量问题限制了DRES在配电网中的普及。本文提出了一种不依赖于通信的下垂控制和依赖于通信的快速控制,并提出了一种低压配电网过电压抑制的综合控制方法。两层集成控制由下垂控制和快速控制组成。提出的综合控制试图在径向网络中平衡逆变器之间的功率损耗。
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引用次数: 22
Demand response potential of residential HVAC loads considering users preferences 考虑用户偏好的住宅HVAC负荷的需求响应潜力
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028883
Mubbashir Ali, A. Safdarian, M. Lehtonen
Domestic Heating Ventilation and Air-Conditioning (HVAC) loads are among the most flexible residential loads for possible demand response (DR) applications. This paper aims at assessing the DR potential of HVAC loads in smart grids considering users' temperature preferences. For doing so, at first, a mathematical formulation is developed to evaluate the flexibility of HVAC loads. The model, by adjusting the HVAC load, intends to either maximize or minimize electricity consumption during specific hours of a day while the user thermal comfort is intact. The proposed model is then applied to a medium massive structure house in Helsinki, Finland. The study is performed for different seasons and the associated DR potential is evaluated. The simulation results showcase the significant potential of HVAC loads in both consumption reduction and load increment. It is shown that the DR potential can be significantly affected by temperature dead-bands representing consumers' willingness to accept change in their comfort. It is also demonstrated that installing even a small thermal storage capacity may lead to a greater value-added DR potential.
对于可能的需求响应(DR)应用,住宅供暖、通风和空调(HVAC)负荷是最灵活的住宅负荷之一。本文旨在评估考虑用户温度偏好的智能电网中HVAC负荷的DR潜力。为此,首先,开发了一个数学公式来评估暖通空调负荷的灵活性。该模型通过调节暖通空调负荷,在保证用户热舒适的前提下,最大化或最小化一天中特定时段的用电量。然后将提出的模型应用于芬兰赫尔辛基的一个中型大结构住宅。该研究是在不同季节进行的,并评估了相关的DR潜力。仿真结果显示了暖通空调负荷在降低能耗和增加负荷方面的巨大潜力。研究表明,代表消费者愿意接受舒适变化的温度死区会显著影响DR潜力。研究还表明,即使安装一个小的储热容量也可能带来更大的增值DR潜力。
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引用次数: 56
Assessment of the effectiveness of asymmetrical line compensation for mitigation of SSR in meshed networks 网格网络中不对称线路补偿缓解SSR的有效性评估
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028835
A. Adrees, J. Milanović
This paper investigates the extent of the effectiveness of the phase-wise compensation scheme to mitigate subsynchronous resonance in a large network. The compensation scheme was proposed in 1990 to lessen the risk of subsynchronous resonance (SSR). This paper presents the studies performed on a 16 machines, 68 bus network to evaluate the effectiveness of the scheme on dynamic instability and transient torque amplification problem due to subsynchronous resonance. SSR analysis is performed using both frequency scanning technique and electromagnetic transient simulations.
本文研究了相位补偿方案对大型电网中次同步谐振的抑制效果。为了降低次同步谐振(SSR)的风险,1990年提出了补偿方案。本文通过对16台机、68个母线网络的研究,评估了该方案在解决次同步谐振引起的动态失稳和瞬态转矩放大问题上的有效性。SSR分析使用频率扫描技术和电磁瞬变模拟进行。
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引用次数: 0
MOPSO-based multi-objective TSO planning considering uncertainties 考虑不确定性的基于mopso的多目标TSO规划
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028762
Qi Wang, Chunyu Zhang, Yi Ding, J. Ostergaard
The concerns of sustainability and climate change have posed a significant growth of renewable energy associated with smart grid technologies. Various uncertainties are the major problems need to be handled by transmission system operator (TSO) planning. This paper mainly focuses on three uncertain factors, i.e. load growth, generation capacity and line faults, and aims to enhance the transmission system via the multi-objective TSO planning (MOTP) approach. The proposed MOTP approach optimizes three objectives simultaneously, namely the probabilistic available transfer capability (PATC), investment cost and power outage cost. A two-phase MOPSO algorithm is employed to solve this optimization problem, which can accelerate the convergence and guarantee the diversity of Pareto-optimal front set as well. The feasibility and effectiveness of the proposed multi-objective planning approach has been verified by the 77-bus system.
对可持续性和气候变化的关注使得与智能电网技术相关的可再生能源显著增长。各种不确定性是输电系统运营商规划需要处理的主要问题。本文主要针对负荷增长、发电容量和线路故障三个不确定因素,通过多目标TSO规划(MOTP)方法对输电系统进行优化。该方法同时优化了三个目标,即概率可用传输能力(PATC)、投资成本和停电成本。采用两阶段MOPSO算法求解该优化问题,既能加快收敛速度,又能保证pareto最优前集的多样性。77公交系统验证了多目标规划方法的可行性和有效性。
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引用次数: 2
Influence of supply security requirements on underground cabling rates in Finland 芬兰供电安全要求对地下电缆费率的影响
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028930
J. Haakana, J. Lassila, T. Kaipia, J. Partanen
This paper provides a view to assess effects of supply security requirements in Finnish electricity distribution networks on network renovation demands. In the beginning of September in 2013 a new Electricity Market Act came into effect in Finland. It sets limits for duration of allowed interruptions. As a background of the act are long interruptions caused by several major disturbances within the past years. Thus, the legislation demands distribution system operators (DSOs) that do not fulfil the criteria of the maximum allowed interruption duration, to develop supply security. Improvement of supply security requires significant actions in distribution networks, which often means replacing of existing lines with underground cables or other line structures that are major-disturbance-proof (MDP) or resilient to major disturbances.
本文提供了一种评估芬兰配电网供电安全要求对网络改造需求影响的观点。2013年9月初,一项新的《电力市场法案》在芬兰生效。它为允许的中断时间设置了限制。作为该行为的背景,是由过去几年的几次重大干扰造成的长期中断。因此,立法要求不符合最大允许中断时间标准的配电系统运营商(dso)发展供应安全。改善供电安全需要在配电网中采取重大行动,这通常意味着用地下电缆或其他防重大干扰(MDP)或能抵御重大干扰的线路结构取代现有线路。
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引用次数: 1
Evaluating performance of classifiers for supervisory protection using disturbance data from phasor measurement units 利用相量测量单元的干扰数据评估用于监督保护的分类器的性能
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028892
O. P. Dahal, H. Cao, S. Brahma, R. Kavasseri
This paper provides rationale for a supervisory protective system to improve security of power system using classification of PMU data. It evaluates the performance of four major classifiers to classify disturbance events residing within the disturbance data obtained from the Phasor Data Concentrator (PDC) owned by a local utility. These classifiers are Support Vector Machines (SVM), k-Nearest Neighbor Classifier, Naive Bayesian Classifier, and Recursive Partitioning and Regression Trees (RPART). Previous work by authors is used to obtain the targets (classes) for the classifiers. Performance of these classifiers is quantified in terms of accuracy and speed. Their suitability for real time classification to help create the supervisory protection system is discussed.
本文提出了一种基于PMU数据分类的监控保护系统,以提高电力系统的安全性。它评估了四个主要分类器的性能,以对来自当地公用事业公司拥有的相量数据集中器(PDC)获得的干扰数据中存在的干扰事件进行分类。这些分类器是支持向量机(SVM)、k近邻分类器、朴素贝叶斯分类器和递归划分和回归树(RPART)。作者以前的工作用于获得分类器的目标(类)。这些分类器的性能是根据准确性和速度进行量化的。讨论了它们是否适合实时分类,以帮助创建监督保护系统。
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引用次数: 20
Thermal behaviour of low voltage cables in smart grid — Related environments 智能电网相关环境中低压电缆的热性能
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028736
N. Honing, E. D. de Jong, G. Bloemhof, H. la Poutré
Low voltage cables in distribution grids will operate under harmful conditions more often in the near future, due to the integration of renewable energy sources and the addition of powerful consumption appliances. It is crucial to evaluate smart solutions that can prolong cable lifetime. Because most knowledge about thermal behaviour of cables has been collected in the medium and high voltage grids, it is also important to study, in real-world circumstances, the precise thermal reaction of low voltage cables to novel types of usage spikes and to protection mechanisms. We emulated a low voltage cable of a Dutch neighbourhood in a laboratory and conducted several overheating experiments for multiple hours. One scenario involved the usage of a smart battery with a control algorithm for the protection of the cable from overheating. We report on results of systematically varying currents and cable insulation. We demonstrate the positive effect of regular interruptions of high currents on cable temperature and that even a small battery (e.g. a used EV battery) can make a significant contribution to the reduction of overheating.
由于可再生能源的整合和大功率消费电器的增加,在不久的将来,配电网中的低压电缆将更多地在有害条件下运行。评估能够延长电缆使用寿命的智能解决方案至关重要。由于大多数关于电缆热行为的知识都是在中高压电网中收集的,因此在现实环境中研究低压电缆对新型使用尖峰和保护机制的精确热反应也很重要。我们在实验室模拟了荷兰某小区的低压电缆,并进行了数小时的多次过热实验。其中一种方案是使用带有控制算法的智能电池,以保护电缆不过热。我们报告了系统变化电流和电缆绝缘的结果。我们展示了高电流定期中断对电缆温度的积极影响,即使是小电池(例如二手电动汽车电池)也可以为减少过热做出重大贡献。
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引用次数: 11
Functionality identification for the testing systems with large-scale highly-concentrated wind power integration by long-distance transmission lines 长距离输电线路大规模高集散风电集成测试系统的功能识别
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028838
Jiabing Hu, Yunhe Hou, Feng Liu, Y. Chi, S. Feng, Haiyan Tang, G. Song, Xiaoming Yuan
Large-scale, highly-concentrated wind power integrated into grids through long transmission lines will bring significant challenges to power system operation during steady-state and dynamic processes. Tremendous research has been conducted in this critical area. However, few, if any available testing systems have been established to meet the requirements of the research on different time-scales. The objective of this paper is to identify the functionality requirements of the testing systems for the comprehensive studies, which covers different time-scale problems of power systems. For this purpose, the realistic Gansu power grids in China and wind farms in Jiuquan area are selected. As a typical power grid with large-scale highly-concentrated wind power integration by long-distance transmissions, the characteristics of the selected wind farms and power grid are discussed first. Two simplified systems are constructed associated with the major characteristics. The critical functionality requirements of the testing systems for different research purposes, i.e., system planning, operation, control, and protection, are identified. As the first step, this paper scopes the key requirements and, ultimately, a complete testing system is expected.
大规模、高度集中的风电通过长输电线并网,将给电力系统稳态和动态运行带来重大挑战。在这个关键领域进行了大量的研究。然而,满足不同时间尺度研究要求的测试系统很少,如果有的话。本文的目的是确定测试系统的功能需求,以进行全面的研究,涵盖电力系统的不同时间尺度问题。为此,选取了中国现实的甘肃电网和酒泉地区的风电场。作为一个典型的大规模高集中式长距离输电并网的电网,本文首先讨论了所选风电场和电网的特点。根据主要特征构造了两个简化系统。为不同的研究目的,即系统规划、操作、控制和保护,确定了测试系统的关键功能需求。作为第一步,本文确定了关键需求,并最终期望建立一个完整的测试系统。
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引用次数: 3
Economic assessment of distribution network reinforcement deferral through post-contingency demand response 基于事后需求响应的配电网加固延迟经济评价
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028786
E. A. Martínez Ceseña, P. Mancarella
This paper presents a methodology for the economic assessment of smarter solutions used for distribution network reinforcement planning; specifically, the methodology was developed to assess the economic value from deploying network reconfiguration and automation, and post-contingency Demand Side Response (DSR) as recommended by the Capacity to Customers (C2C) method, which is currently being tested in the UK at medium voltage levels (i.e., 11kV and 6.6kV). The C2C method combines the aforementioned smart solutions to increase distribution network capacity (limited by security considerations) and bring about several social benefits at the distribution level (e.g., reduced power losses and increased reliability); thus deferring or even averting costly network and substation reinforcements. The proposed methodology relies on scenarios, optimisations and a Cost Benefit Analysis (CBA) framework to assess the C2C method compared with traditional reinforcement practices. The approach is illustrated using a real UK distribution network where the C2C method is currently being tested, and general conclusions from other such networks are also discussed. The results highlight the conditions that encourage the deployment of C2C interventions as an alternative to or in combination with traditional reinforcements.
本文提出了一种用于配电网加固规划的智能解决方案的经济评估方法;具体来说,该方法的开发是为了评估部署网络重构和自动化的经济价值,以及根据客户容量(C2C)方法推荐的应急后需求侧响应(DSR),该方法目前正在英国中压水平(即11千伏和6.6千伏)进行测试。C2C方法结合上述智能解决方案,增加配电网容量(受安全考虑限制),并在配电网层面带来多项社会效益(如减少电力损耗和提高可靠性);从而推迟甚至避免昂贵的网络和变电站加固。提出的方法依赖于场景,优化和成本效益分析(CBA)框架来评估与传统强化实践相比的C2C方法。该方法使用一个真实的英国分销网络进行说明,其中C2C方法目前正在测试中,并且还讨论了其他此类网络的一般结论。结果强调了鼓励部署C2C干预措施作为传统强化措施的替代方案或与之结合的条件。
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引用次数: 8
Microgrid design considerations for a smart-energy university campus 智能能源大学校园微电网设计考虑
Pub Date : 2014-10-01 DOI: 10.1109/ISGTEUROPE.2014.7028743
R.M.D.G. Morales Gonzalez, T. A. J. V. Goch, M. Aslam, A. Blanch, Paulo F. Ribeiro
The goal of this paper is to propose a design approach to transform the current distribution network of the Eindhoven University of Technology campus into a smart grid. First, the needs and interests of different stakeholders are translated into a local definition of the smart grid concept. This definition is the starting point for outlining the values and services that the smart grid should provide, and the goals it needs to fulfill. Future campus loads, distributed generators, and mobile storage capabilities are modeled and simulated in order to assess their impact on the distribution grid and determine hosting capacity. Recommendations are given on the infrastructure needed for enabling the transition to smart grids, not only for the university as a concrete case study, but rather as a blueprint for future smart grid pilots.
本文的目标是提出一种设计方法,将埃因霍温理工大学校园的现有配电网改造成智能电网。首先,将不同利益相关者的需求和利益转化为智能电网概念的本地定义。这个定义是概述智能电网应该提供的价值和服务以及它需要实现的目标的起点。未来的校园负荷、分布式发电机和移动存储能力进行建模和模拟,以评估它们对配电网的影响并确定托管容量。报告中提出了向智能电网过渡所需的基础设施建议,不仅作为具体的案例研究,而且作为未来智能电网试点的蓝图。
{"title":"Microgrid design considerations for a smart-energy university campus","authors":"R.M.D.G. Morales Gonzalez, T. A. J. V. Goch, M. Aslam, A. Blanch, Paulo F. Ribeiro","doi":"10.1109/ISGTEUROPE.2014.7028743","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2014.7028743","url":null,"abstract":"The goal of this paper is to propose a design approach to transform the current distribution network of the Eindhoven University of Technology campus into a smart grid. First, the needs and interests of different stakeholders are translated into a local definition of the smart grid concept. This definition is the starting point for outlining the values and services that the smart grid should provide, and the goals it needs to fulfill. Future campus loads, distributed generators, and mobile storage capabilities are modeled and simulated in order to assess their impact on the distribution grid and determine hosting capacity. Recommendations are given on the infrastructure needed for enabling the transition to smart grids, not only for the university as a concrete case study, but rather as a blueprint for future smart grid pilots.","PeriodicalId":299515,"journal":{"name":"IEEE PES Innovative Smart Grid Technologies, Europe","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126810139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
期刊
IEEE PES Innovative Smart Grid Technologies, Europe
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