Cyber Physical Power Systems State Estimation

The work introduces and contextualizes the core concepts and classic approaches to state estimation modeling.

Author: Arturo Bretas

Publisher: Elsevier

ISBN: 9780323903226

Category: Technology & Engineering

Page: 292

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Cyber-Physical Power System State Estimation updates classic state estimation tools to enable real-time operations and optimize reliability in modern electric power systems. The work introduces and contextualizes the core concepts and classic approaches to state estimation modeling. It builds on these classic approaches with a suite of data-driven models and non-synchronized measurement tools to reflect current measurement trends required by increasingly more sophisticated grids. Chapters outline core definitions, concepts and the network analysis procedures involved in the real-time operation of EPS. Specific sections introduce power flow problem in EPS, highlighting network component modeling and power flow equations for state estimation before addressing quasi static state estimation in electrical power systems using Weighted Least Squares (WLS) classical and alternatives formulations. Particularities of the state estimation process in distribution systems are also considered. Finally, the work goes on to address observability analysis, measurement redundancy and the processing of gross errors through the analysis of WLS static state estimator residuals. Develops advanced approaches to smart grid real-time monitoring through quasi-static model state estimation and non-synchronized measurements system models Presents a novel, extended optimization, physics-based model which identifies and corrects for measurement error presently egregiously discounted in classic models Demonstrates how to embed cyber-physical security into smart grids for real-time monitoring Introduces new approaches to calculate power flow in distribution systems and for estimating distribution system states Incorporates machine-learning based approaches to complement the state estimation process, including pattern recognition-based solutions, principal component analysis and support vector machines
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Parallel Dynamic State Estimation of Large scale Cyber physical Power Systems

Even with modern computing power, the large volume of computation in the state estimation process is highly time and memory intensive, and a serious bottleneck for online operation and control of the grid.

Author: Hadis Karimipour

Publisher:

ISBN: OCLC:956274677

Category: Parallel programming (Computer science)

Page: 140

View: 535

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Growing system size and complexity along with the large amount of data provided by phasor measurement units (PMUs) are the drivers for accurate state estimation algorithms for online monitoring and operation of power grids. State estimation is the process of estimating unknown state variables in a power grid, which are then used for energy management system (EMS) functions in the control centre. Even with modern computing power, the large volume of computation in the state estimation process is highly time and memory intensive, and a serious bottleneck for online operation and control of the grid. Furthermore, the deployment of new smart grid technologies in communication and smart metering technologies brings new challenges to the state estimation problem. In addition to failure of physical infrastructure, the smart grid is also sensitive to cyber-attacks on its communication layer. Intelligent cyber-attacks can be designed to be unobservable by the traditional bad data detector. Such attacks can significantly impact the decision making process in control centres and can result in potentially catastrophic outcomes. The focus of this research is to design parallel computational algorithms to accelerate dynamic state estimation for both static and dynamic states in large-scale power networks. Moreover, a stochastic model is proposed to guard the system against intelligent cyberattacks. Utilizing the massively parallel architecture of graphic processors and using detailed models of power system components, the proposed research achieved the required accuracy as well as the computational speed-up in the results.
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Security of Cyber Physical Systems State Estimation and Control

This book analyzes the secure problems of cyber-physical systems from both the adversary and defender sides.

Author: Chengwei Wu

Publisher: Springer Nature

ISBN: 9783030883508

Category: Technology & Engineering

Page: 277

View: 317

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This book analyzes the secure problems of cyber-physical systems from both the adversary and defender sides. Targeting the challenging security problems of cyber-physical systems under malicious attacks, this book presents some recent novel secure state estimation and control algorithms, in which moving target defense scheme, zero-sum game-theoretical approach, reinforcement learning, neural networks, and intelligent control are adopted. Readers will find not only the valuable secure state estimation and control schemes combined with the approaches aforementioned, but also some vital conclusions for securing cyber-physical systems, for example, the critical value of allowed attack probability, the maximum number of sensors to be attacked, etc. The book also provides practical applications, example of which are unmanned aerial vehicles, interruptible power system, and robot arm to validate the proposed secure algorithms. Given its scope, it offers a valuable resource for undergraduate and graduate students, academics, scientists, and engineers who are working in this field.
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Cyberphysical Infrastructures in Power Systems

5.2.2 Basic paradigms of state estimation Apart from system-level classification, state estimation is further divided into two basic paradigms of 1) static state estimation (SSE), and 2) dynamic state estimation (DSE) methods [23].

Author: Magdi S. Mahmoud

Publisher: Academic Press

ISBN: 9780323852623

Category: Technology & Engineering

Page: 424

View: 107

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In an uncertain and complex environment, to ensure secure and stable operations of large-scale power systems is one of the biggest challenges that power engineers have to address today. Traditionally, power system operations and decision-making in controls are based on power system computations of physical models describing the behavior of power systems. Largely, physical models are constructed according to some assumptions and simplifications, and such is the case with power system models. However, the complexity of power system stability problems, along with the system's inherent uncertainties and nonlinearities, can result in models that are impractical or inaccurate. This calls for adaptive or deep-learning algorithms to significantly improve current control schemes that solve decision and control problems. Cyberphysical Infrastructures in Power Systems: Architectures and Vulnerabilities provides an extensive overview of CPS concepts and infrastructures in power systems with a focus on the current state-of-the-art research in this field. Detailed classifications are pursued highlighting existing solutions, problems, and developments in this area. Gathers the theoretical preliminaries and fundamental issues related to CPS architectures. Provides coherent results in adopting control and communication methodologies to critically examine problems in various units within smart power systems and microgrid systems. Presents advanced analysis under cyberphysical attacks and develops resilient control strategies to guarantee safe operation at various power levels.
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Cyber Physical Energy and Power Systems

In: Proceedings of the Workshop on Modeling and Simulation Cyber-Physical Energy Systems (MSCPES), Vienna, Austria, ... Thorp J, Mili L (2012) Cyber security impacts on all-PMU state estimator—A case study on cosimulation platform GECO.

Author: Yijia Cao

Publisher: Springer Nature

ISBN: 9789811500626

Category: Technology & Engineering

Page: 216

View: 981

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This book discusses recent advances in cyber-physical power systems (CPPS) in the modeling, analysis and applications of smart grid. It introduces a series of models, such as an analysis of interaction between the power grid and the communication network, differential protection in smart distribution systems, data flow for VLAN-based communication in substations, a co-simulation model for investigating the impacts of cyber-contingency and distributed control systems as well as the analytical techniques used in different parts of cyber physical energy systems. It also discusses methods of cyber-attack on power systems, particularly false data injection. The results presented are a comprehensive summary of the authors’ original research conducted over a period of 5 years. The book is of interest to university researchers, R&D engineers and graduate students in power and energy systems.
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Cyber Physical Systems Approach to Smart Electric Power Grid

81. 82. 83. 84. 85. 86. 87. 88. Kosut, O., Jia, L., Thomas, R.J., Tong, L.: Limiting false data attacks on power system state estimation. In: Proc. 44th Annual Conference on Information Sciences and Systems (CISS), Princeton, NJ, pp.

Author: Siddhartha Kumar Khaitan

Publisher: Springer

ISBN: 9783662459287

Category: Technology & Engineering

Page: 385

View: 575

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This book documents recent advances in the field of modeling, simulation, control, security and reliability of Cyber- Physical Systems (CPS) in power grids. The aim of this book is to help the reader gain insights into working of CPSs and understand their potential in transforming the power grids of tomorrow. This book will be useful for all those who are interested in design of cyber-physical systems, be they students or researchers in power systems, CPS modeling software developers, technical marketing professionals and business policy-makers.
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Detection of False Data Injection Attacks in Smart Grid Cyber Physical Systems

In our future work, we would like to extend our proposed method to capture power system faults (e.g., ... method for bad data analysis in power system state estimation,” IEEE Transactions on Power Apparatus and Systems, 11, 3239–3252.

Author: Beibei Li

Publisher: Springer Nature

ISBN: 9783030586720

Category: Technology & Engineering

Page: 157

View: 123

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​This book discusses cybersecurity issues of smart grid cyber-physical systems, focusing on the detection techniques against false data injection attacks. The authors discuss passive and proactive techniques that combat and mitigate two categories of false data injection attacks, false measurement data injections and false command data injections in smart grid cyber-physical systems. These techniques are easy to follow for either professionals or beginners. With this book, readers can quickly get an overview of this topic and get ideas of new solutions for false data injections in smart grid cyber-physical systems. Readers include researchers, academics, students, and professionals. Presents a comprehensive summary for the detection techniques of false data injection attacks in smart grid cyber-physical systems; Reviews false data injections for either measurement data or command data; Analyzes passive and proactive approaches to smart grid cyber-physical systems.
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Security and Privacy in Cyber Physical Systems

Anwar, A. and Mahmood, A.N. (2014) Vulnerabilities of smart grid state estimation against false data injection attack. In: Renewable Energy Integration, ... International Journal of Electrical Power & Energy Systems, 63, 473–484, ...

Author: Houbing Song

Publisher: John Wiley & Sons

ISBN: 9781119226055

Category: Computers

Page: 472

View: 795

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Written by a team of experts at the forefront of the cyber-physical systems (CPS) revolution, this book provides an in-depth look at security and privacy, two of the most critical challenges facing both the CPS research and development community and ICT professionals. It explores, in depth, the key technical, social, and legal issues at stake, and it provides readers with the information they need to advance research and development in this exciting area. Cyber-physical systems (CPS) are engineered systems that are built from, and depend upon the seamless integration of computational algorithms and physical components. Advances in CPS will enable capability, adaptability, scalability, resiliency, safety, security, and usability far in excess of what today’s simple embedded systems can provide. Just as the Internet revolutionized the way we interact with information, CPS technology has already begun to transform the way people interact with engineered systems. In the years ahead, smart CPS will drive innovation and competition across industry sectors, from agriculture, energy, and transportation, to architecture, healthcare, and manufacturing. A priceless source of practical information and inspiration, Security and Privacy in Cyber-Physical Systems: Foundations, Principles and Applications is certain to have a profound impact on ongoing R&D and education at the confluence of security, privacy, and CPS.
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Consequences of False Data Injection on Power System State Estimation

The electric power system is one of the largest, most complicated, and most important cyber-physical systems in the world.

Author: Jingwen Liang

Publisher:

ISBN: OCLC:912979252

Category: Computer networks

Page: 60

View: 212

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The electric power system is one of the largest, most complicated, and most important cyber-physical systems in the world. The link between the cyber and physical level is the Supervisory Control and Data Acquisition (SCADA) systems and Energy Management Systems (EMS). Their functions include monitoring the real-time system operation through state estimation (SE), controlling the system to operate reliably, and optimizing the system operation efficiency. The SCADA acquires the noisy measurements, such as voltage angle and magnitude, line power flows, and line current magnitude, from the remote terminal units (RTUs). These raw data are firstly sent to the SE, which filters all the noisy data and derives the best estimate of the system state. Then the estimated states are used for other EMS functions, such as contingency analysis, optimal power flow, etc. In the existing state estimation process, there is no defense mechanism for any malicious attacks. Once the communication channel between the SCADA and RTUs is hijacked by the attacker, the attacker can perform a man-in-middle attack and send data of its choice. The only step that can possibly detect the attack during the state estimation process is the bad data detector. Unfortunately, even the bad data detector is unable to detect a certain type of attack, known as the false data injection (FDI) attacks. Diagnosing the physical consequences of such attacks, therefore, is very important to understand system stability. In this thesis, theoretical general attack models for AC and DC attacks are given and an optimization problem for the worst-case overload attack is formulated. Furthermore, physical consequences of FDI attacks, based on both DC and AC model, are addressed. Various scenarios with different attack targets and system configurations are simulated. The details of the research, results obtained and conclusions drawn are presented in this document.
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Smart Grid Control

T. Yardley, R. Berthier, D. Nicol, W.H. Sanders, Smart grid protocol testing through cyberphysical testbeds, inProceedings of IEEE ... V. Kekatos, G.B. Giannakis, Distributed robust power system state estimation. IEEE Trans. Power Syst.

Author: Jakob Stoustrup

Publisher: Springer

ISBN: 9783319983103

Category: Technology & Engineering

Page: 288

View: 284

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This book focuses on the role of systems and control. Focusing on the current and future development of smart grids in the generation and transmission of energy, it provides an overview of the smart grid control landscape, and the potential impact of the various investigations presented has for technical aspects of power generation and distribution as well as for human and economic concerns such as pricing, consumption and demand management. A tutorial exposition is provided in each chapter, describing the opportunities and challenges that lie ahead. Topics in these chapters include: wide-area control; issues of estimation and integration at the transmission; distribution, consumers, and demand management; and cyber-physical security for smart grid control systems. The contributors describe the problems involved with each topic, and what impact these problems would have if not solved. The tutorial components and the opportunities and challenges detailed make this book ideal for anyone interested in new paradigms for modernized, smart power grids, and anyone in a field where control is applied. More specifically, it is a valuable resource for students studying smart grid control, and for researchers and academics wishing to extend their knowledge of the topic.
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