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2019 IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids (SmartGridComm)最新文献

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Modeling Supply Chain Attacks in IEC 61850 Substations IEC 61850变电站中的供应链攻击建模
O. Duman, Mohsen Ghafouri, Marthe Kassouf, Ribal Atallah, Lingyu Wang, M. Debbabi
Supply chain attacks, which exploit vulnerabilities deliberately injected into devices either before their shipment or through subsequent firmware updates, represent one of the most insidious security threats in smart grids. The deliberate nature of such vulnerabilities means that they can be more difficult to mitigate, e.g., the attack could be designed to autonomously launch from the inside or to cause invisible physical damages to devices over a long time span. Furthermore, they can result in more severe consequences, e.g., the attack could leak sensitive information like crypto keys, or cause a large scale blackout through coordinated devices from the same malicious or hijacked vendor. In this paper, we take the first step towards a better understanding of the threat of supply chain attacks in IEC 61850 substations. Specifically, we first discuss the general concept and unique aspects of supply chain attacks. We then present concrete models of different supply chain attacks through extending the attack graph model and designing a security metric, namely k-Supply. Lastly, we apply such models to quantitatively study the potential impact of supply chain attacks through simulations.
供应链攻击,利用在设备发货前或随后的固件更新中故意注入的漏洞,是智能电网中最隐蔽的安全威胁之一。此类漏洞的故意性质意味着它们可能更难以缓解,例如,攻击可以被设计为从内部自动启动,或者在很长一段时间内对设备造成无形的物理损害。此外,它们还可能导致更严重的后果,例如,攻击可能会泄露加密密钥等敏感信息,或者通过来自同一恶意或被劫持供应商的协调设备造成大规模停电。在本文中,我们迈出了更好地理解IEC 61850变电站供应链攻击威胁的第一步。具体来说,我们首先讨论供应链攻击的一般概念和独特方面。然后,通过扩展攻击图模型和设计一个安全度量k-Supply,给出了不同供应链攻击的具体模型。最后,我们通过模拟应用这些模型定量研究供应链攻击的潜在影响。
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引用次数: 14
Deep Directed Information-Based Learning for Privacy-Preserving Smart Meter Data Release 深度定向信息学习保护智能电表数据发布
Mohammadhadi Shateri, Francisco Messina, P. Piantanida, F. Labeau
The explosion of data collection has raised serious privacy concerns in users due to the possibility that sharing data may also reveal sensitive information. The main goal of a privacy-preserving mechanism is to prevent a malicious third party from inferring sensitive information while keeping the shared data useful. In this paper, we study this problem in the context of time series data and smart meters (SMs) power consumption measurements in particular. Although Mutual Information (MI) between private and released variables has been used as a common information-theoretic privacy measure, it fails to capture the causal time dependencies present in the power consumption time series data. To overcome this limitation, we introduce the Directed Information (DI) as a more meaningful measure of privacy in the considered setting and propose a novel loss function. The optimization is then performed using an adversarial framework where two Recurrent Neural Networks (RNNs), referred to as the releaser and the adversary, are trained with opposite goals. Our empirical studies on real-world data sets from SMs measurements in the worst-case scenario where an attacker has access to all the training data set used by the releaser, validate the proposed method and show the existing trade-offs between privacy and utility.
数据收集的爆炸式增长引发了用户对隐私的严重担忧,因为共享数据也可能泄露敏感信息。隐私保护机制的主要目标是防止恶意第三方推断敏感信息,同时保持共享数据的有用性。在本文中,我们在时间序列数据和智能电表(SMs)功耗测量的背景下研究了这个问题。尽管私有变量和释放变量之间的互信息(MI)已被用作常见的信息论隐私度量,但它无法捕获功耗时间序列数据中存在的因果时间依赖性。为了克服这一限制,我们引入了定向信息(DI)作为一种更有意义的隐私度量,并提出了一种新的损失函数。然后使用对抗性框架执行优化,其中两个循环神经网络(rnn),称为释放者和对手,以相反的目标进行训练。我们对来自SMs测量的真实世界数据集进行了实证研究,在最坏的情况下,攻击者可以访问发布者使用的所有训练数据集,验证了所提出的方法,并显示了隐私和实用性之间的现有权衡。
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引用次数: 14
Learning-Based Time Delay Attack Characterization for Cyber-Physical Systems 基于学习的网络物理系统时延攻击表征
Xin Lou, Cuong Tran, David K. Y. Yau, Rui Tan, H. Ng, T. Fu, M. Winslett
The cyber-physical systems (CPSes) rely on computing and control techniques to achieve system safety and reliability. However, recent attacks show that these techniques are vulnerable once the cyber-attackers have bypassed air gaps. The attacks may cause service disruptions or even physical damages. This paper designs the built-in attack characterization scheme for one general type of cyber-attacks in CPS, which we call time delay attack, that delays the transmission of the system control commands. We use the recurrent neural networks in deep learning to estimate the delay values from the input trace. Specifically, to deal with the long time-sequence data, we design the deep learning model using stacked bidirectional long short-term memory (LSTM) units. The proposed approach is tested by using the data generated from a power plant control system. The results show that the LSTM-based deep learning approach can work well based on data traces from three sensor measurements, i.e., temperature, pressure, and power generation, in the power plant control system. Moreover, we show that the proposed approach outperforms the base approach based on k-nearest neighbors.
信息物理系统(cps)依靠计算和控制技术来实现系统的安全性和可靠性。然而,最近的攻击表明,一旦网络攻击者绕过气隙,这些技术就很容易受到攻击。这些攻击可能会导致业务中断甚至物理损坏。针对CPS中一种常见的网络攻击,即延迟系统控制命令传输的时延攻击,本文设计了一种内置的攻击表征方案。我们使用深度学习中的递归神经网络从输入轨迹估计延迟值。具体来说,为了处理长时间序列数据,我们设计了使用堆叠双向长短期记忆(LSTM)单元的深度学习模型。利用某电厂控制系统的实测数据对该方法进行了验证。结果表明,基于lstm的深度学习方法可以很好地基于电厂控制系统中温度、压力和发电量三种传感器测量的数据轨迹。此外,我们还证明了该方法优于基于k近邻的基本方法。
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引用次数: 10
Knowledge-based and Data-driven Approach based Fault Diagnosis for Power-Electronics Energy Conversion System 基于知识和数据驱动的电力电子能量转换系统故障诊断
Chuang Liu, Lei Kou, G. Cai, Jia-ning Zhou, Yi-qun Meng, Yunhui Yan
Recently, power electronic converters have been widely used since more renewable energy systems have been interconnected with the power grid, among which three-phase PWM rectifier is one of the most widely used in drives of electrical motors, AC and DC transmission, and other energy conversion fields. Like any other power electronic converter, three-phase PWM rectifier may be affected by various faults like open-circuit faults. Therefore, fault diagnosis is extremely important to reduce the maintenance costs and improve the stability of the system. A novel open-circuit faults diagnosis method is proposed. The fault diagnosis method only requires the three-phase AC currents, and then Concordia transform is used to calculate the slopes of the current trajectories (knowledge-based). After that the data-driven method of random forest algorithm is used to train the fault diagnosis classifier with slopes data. Finally the knowledge-based and data-driven fault diagnosis methods are combined to achieve fault diagnosis and location. Experiments are carried out and the experimental results are presented to validate effectiveness, robustness of the proposed fault diagnosis method. Furthermore, the proposed method is suitable for vast majority of three-phase energy conversion systems.
近年来,随着越来越多的可再生能源系统接入电网,电力电子变流器得到了广泛的应用,其中三相PWM整流器在电机驱动、交直流输电等能量转换领域的应用最为广泛。与其他电力电子变换器一样,三相PWM整流器也会受到开路故障等各种故障的影响。因此,故障诊断对于降低维护成本,提高系统的稳定性具有极其重要的意义。提出了一种新的开路故障诊断方法。故障诊断方法只需要三相交流电流,然后使用Concordia变换计算电流轨迹的斜率(基于知识)。然后利用随机森林算法的数据驱动方法对坡度数据进行故障诊断分类器的训练。最后将基于知识的故障诊断方法和数据驱动的故障诊断方法相结合,实现故障诊断与定位。实验结果验证了所提故障诊断方法的有效性和鲁棒性。此外,该方法适用于绝大多数三相能量转换系统。
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引用次数: 5
Sensitivity to Forecast Errors in Energy Storage Arbitrage for Residential Consumers 住宅用户储能套利对预测误差的敏感性
Diego Kiedanski, Md Umar Hashmi, A. Bušić, D. Kofman
With the massive deployment of distributed energy resources, there has been an increase in the number of end consumers that own photovoltaic panels and storage systems. The optimal use of such storage when facing Time of Use (ToU) prices is directly related to the quality of the load and generation forecasts as well as the algorithm that controls the battery. The sensitivity of such control to different forecast techniques is studied in this paper. It is shown that good and bad forecasts can result in losses in, particularly bad days. Nevertheless, it is observed that performing Model Predictive Control (MPC) with a simple forecast that is representative of the pasts can be profitable under different price and battery scenarios. We observe that performing MPC at a faster sampling time with a receding optimization horizon makes arbitrage less sensitive to uncertainties in forecasting. We use real data from Pecan Street and ToU price levels with different buying and selling price for the numerical experiments.
随着分布式能源的大规模部署,拥有光伏板和储能系统的终端用户数量不断增加。当面对使用时间(ToU)价格时,这种存储的最佳使用与负载和发电预测的质量以及控制电池的算法直接相关。本文研究了这种控制对不同预测技术的敏感性。研究表明,好的和坏的预测都会导致损失,尤其是在糟糕的日子里。然而,可以观察到,在不同的价格和电池场景下,使用代表过去的简单预测执行模型预测控制(MPC)是有利可图的。我们观察到,在更快的采样时间和后退的优化水平下执行MPC使套利对预测中的不确定性不那么敏感。我们使用山核桃街的真实数据和不同买卖价格的分时电价水平进行数值实验。
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引用次数: 6
Cascaded Model Predictive Control for Shared Autonomous Electric Vehicles Systems with V2G Capabilities 具有V2G功能的共享自动驾驶电动汽车系统级联模型预测控制
Riccardo Iacobucci, R. Bruno
Shared autonomous electric vehicles (SAEVs) are being introduced in pilot programs and they are expected to be commercially available by the next decade. In this work, we propose a methodology for the joint optimisation of vehicle charging, vehicle-to-grid (V2G) services and fleet rebalancing in mobility systems using SAEVs. The proposed model is implemented as a cascaded model predictive control (MPC) optimisation framework with two different timescales. The first MPC scheme, called energy layer, abstracts the fleet of SAEVs as an aggregate storage system for the sake of model scalability, and it optimises fleet charging and V2G services to minimise electricity cost over a long timescale (hours). The second MPC scheme, called transport layer, optimises short-term vehicle routing and relocation decisions to minimise customers’ waiting times while taking into account the charging constraints derived from the energy layer. A case study using transport and electricity price data for the city of Tokyo is used to validate the model. Results demonstrate that our approach is computationally scalable and it can be applied to large-scale scenarios. In addition, it allows to significantly reduce charging costs with limited impact on passengers’ waiting times
共享自动驾驶电动汽车(saev)正在试点项目中引入,预计将在未来十年内投入商用。在这项工作中,我们提出了一种在使用saev的移动系统中联合优化车辆充电、车辆到电网(V2G)服务和车队再平衡的方法。该模型被实现为具有两个不同时间尺度的级联模型预测控制(MPC)优化框架。第一个MPC方案被称为能量层,为了模型的可扩展性,它将saev车队抽象为一个聚合存储系统,并优化车队充电和V2G服务,以最大限度地降低长时间(小时)的电力成本。第二个MPC方案,称为传输层,优化短期车辆路线和重新安置决策,以最大限度地减少客户的等待时间,同时考虑到来自能源层的充电限制。本文以东京都的交通和电价数据为例,对模型进行了验证。结果表明,我们的方法具有计算可扩展性,可以应用于大规模场景。此外,它可以在对乘客等待时间影响有限的情况下显著降低收费成本
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引用次数: 8
Two-Timescale Voltage Regulation in Distribution Grids Using Deep Reinforcement Learning 基于深度强化学习的配电网双时间尺度电压调节
Qiuling Yang, Gang Wang, A. Sadeghi, G. Giannakis, Jian Sun
Frequent and sizeable voltage fluctuations become more pronounced with the increasing penetration of distributed renewable generation, and they considerably challenge distribution grids. Voltage regulation schemes so far have relied on either utility-owned devices (e.g., voltage transformers, and shunt capacitors), or more recently, smart power inverters that come with contemporary distributed generation units (e.g., photovoltaic systems, and wind turbines). Nonetheless, due to the distinct response times of those devices, as well as the discrete on-off commitment of capacitor units, joint control of both types of assets is challenging. In this context, a novel two-timescale voltage regulation scheme is developed here by coupling optimization with reinforcement learning advances. Shunt capacitors are configured on a slow timescale (e.g., daily basis) leveraging a deep reinforcement learning algorithm, while optimal setpoints of the power inverters are computed using a linearized distribution flow model on a fast timescale (e.g., every few seconds or minutes). Numerical experiments using a real-world 47-bus distribution feeder showcase the remarkable performance of the novel scheme.
随着分布式可再生能源发电的日益普及,频繁和较大的电压波动变得更加明显,这对配电网构成了相当大的挑战。到目前为止,电压调节方案要么依赖于公用事业拥有的设备(例如,电压互感器和并联电容器),要么依赖于最近与当代分布式发电机组(例如,光伏系统和风力涡轮机)一起配备的智能电源逆变器。然而,由于这些设备的响应时间不同,以及电容器单元的分立开关承诺,联合控制这两种类型的资产是具有挑战性的。在此背景下,本文通过耦合优化和强化学习的进展,开发了一种新的双时间尺度电压调节方案。并联电容器利用深度强化学习算法在慢时间尺度(例如,每天)上配置,而功率逆变器的最佳设定值则使用快速时间尺度(例如,每隔几秒或几分钟)的线性化分布流模型计算。在实际47总线馈线上的数值实验表明了该方案的显著性能。
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引用次数: 3
Handling Incomplete and Erroneous Grid Topology Information for Low Voltage Grid Observability 低压电网可观测性中不完整和错误网格拓扑信息的处理
Kamal Shahid, Enrico Schiavone, Domagoj Drenjanac, M. Lyhne, R. Olsen, H. Schwefel
Grid topology information plays an important role in grid observability applications such as fault detection and diagnosis. For these applications, data from customer connections should be processed jointly with measurements from the distribution grid by Distribution System Operator (DSO) systems and also correlated to the LV grid topology. In practical DSO systems, the LV grid topology data is frequently included in their databases and may come from different systems such as Geographical Information System (GIS) or other asset management systems, which store a relevant part of the grid topology in a type-specific format. However, in most cases, the grid topology information is not utilized for grid observability applications due to several challenges such as lack of standard data models, complexities in extracting topology information, incorrect/incomplete topology information, dependence on multiple databases etc. Thus, this paper presents challenges and complexities faced by electrical utilities in extracting/using grid topology information for observability applications. The challenges are demonstrated using topology models from two real medium-sized distribution grid operators, which are currently being used in two different European countries.
网格拓扑信息在故障检测和诊断等网格可观测性应用中起着重要作用。对于这些应用,来自客户连接的数据应该由配电系统运营商(DSO)系统与来自配电网的测量数据联合处理,并与低压电网拓扑结构相关联。在实际的DSO系统中,LV网格拓扑数据经常包含在他们的数据库中,可能来自不同的系统,如地理信息系统(GIS)或其他资产管理系统,它们以特定类型的格式存储网格拓扑的相关部分。然而,在大多数情况下,由于缺乏标准的数据模型、拓扑信息提取的复杂性、拓扑信息的不正确/不完整、对多个数据库的依赖等挑战,网格拓扑信息并没有被用于网格可观察性应用。因此,本文提出了电力公司在可观测性应用中提取/使用网格拓扑信息所面临的挑战和复杂性。本文使用两个实际中型配电网运营商的拓扑模型来演示这些挑战,这些模型目前在两个不同的欧洲国家使用。
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引用次数: 4
Multi-Microgrid Energy Management System in Times of 5G 5G时代的多微网能源管理系统
Stephan Gross, F. Ponci, A. Monti
Microgrids promise an efficient integration of de-centralized energy resources (DER), mostly fueled by renewable energy sources (RES), and prosumers - pro-active consumers with own generation and storage capacities that can actively manage their load. The arising multi-microgrid concept inter-connects several microgrids in order to increase the operational stability and to raise additional economic benefits for the single microgrid by aggregating spare flexibility from the microgrids and providing it to the utility and energy markets as demand side management (DSM) services. Current research literature discusses both approaches extensively but so far microgrids have not spread widely because of extensive installation costs and operational difficulties. An open software platform based on available standards and control algorithms would decrease these barriers. This paper provides an initial requirement analysis for a multi-/microgrid energy management system (EMS) software platform implementation considering advancements in the telecommunication sector and especially the upgrade to the fifth generation (5G) of the wireless network. At the end of this paper, we present a concept for a scalable test bed for such platform implementations.
微电网承诺将分散的能源(DER)(主要由可再生能源(RES)提供燃料)和产消者(拥有自己的发电和存储能力,可以主动管理其负荷的主动消费者)进行有效整合。新兴的多微电网概念将多个微电网相互连接,通过聚合微电网的备用灵活性并将其作为需求侧管理(DSM)服务提供给公用事业和能源市场,从而提高单个微电网的运行稳定性和额外的经济效益。目前的研究文献广泛讨论了这两种方法,但到目前为止,由于安装成本高和操作困难,微电网尚未广泛推广。基于现有标准和控制算法的开放软件平台将减少这些障碍。考虑到电信领域的发展,特别是向第五代(5G)无线网络的升级,本文对多/微电网能源管理系统(EMS)软件平台的实施进行了初步需求分析。在本文的最后,我们提出了一个用于这种平台实现的可扩展测试平台的概念。
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引用次数: 2
Transport layer and Synchronization for Smart Grid and Industrial Internet in 5G Networks 5G网络中智能电网和工业互联网的传输层与同步
J. Costa-Requena, Carlos Barjau Estevan, Seppo Borenius
Industrial internet is the main customer for 5G networks. However, mobile networks cannot deliver currently the required reliability and transport infrastructure. In the past mobile networks were designed for personal communications optimized for downlink data transfer. A new transport that provides seamless connectivity between mobile and fixed devices is required. Moreover, reliable timing information has to be delivered to both cellular and fixed devices with predictable delay to enable synchronous communications. This paper studies limitations of utilizing the current transport in mobile networks for smart grid and industrial communications. A new transport layer is proposed and the solution to deliver accurate timing information. Finally, the paper studies capabilities of deploying the proposed transport in both 4G but also in emerging 5G cellular networks.
工业互联网是5G网络的主要客户。然而,移动网络目前无法提供所需的可靠性和传输基础设施。过去,移动网络是为个人通信而设计的,对下行数据传输进行了优化。需要一种新的传输方式,在移动设备和固定设备之间提供无缝连接。此外,可靠的定时信息必须以可预测的延迟传递给蜂窝和固定设备,以实现同步通信。本文研究了在智能电网和工业通信中利用当前移动网络传输的局限性。提出了一种新的传输层和解决方案,以提供准确的定时信息。最后,本文研究了在4G和新兴5G蜂窝网络中部署拟议传输的能力。
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引用次数: 5
期刊
2019 IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids (SmartGridComm)
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