Download or read book Cyber Physical Power Systems State Estimation written by Arturo Bretas and published by Elsevier. This book was released on 2021-05-14 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Download or read book Security of Cyber Physical Systems State Estimation and Control written by Chengwei Wu and published by Springer Nature. This book was released on 2021-10-19 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Parallel Dynamic State Estimation of Large scale Cyber physical Power Systems written by Hadis Karimipour and published by . This book was released on 2016 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Cyber Physical Systems Approach to Smart Electric Power Grid written by Siddhartha Kumar Khaitan and published by Springer. This book was released on 2015-01-02 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Cyber Physical Energy and Power Systems written by Yijia Cao and published by Springer Nature. This book was released on 2019-11-19 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Cyberphysical Infrastructures in Power Systems written by Magdi S. Mahmoud and published by Elsevier. This book was released on 2021-10-28 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Cyber attack Detection and Resilient State Estimation in Power Systems written by Ana Jevtić (Ph. D.) and published by . This book was released on 2020 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many critical infrastructures, such as transportation and electric energy networks, and health care, are now becoming highly integrated with information and communication technology, in order to be more efficient and reliable. These cyber-physical systems (CPS) now face an increasing threat of cyber-attacks. Intelligent attackers can leverage their knowledge of the system, disruption, and disclosure resources to critically damage the system while remaining undiscovered. In this dissertation, we develop a defense strategy, with the ability to uncover malicious and intelligent attacks and enable resilient operation of cyber-physical systems. Specifically, we apply this defense strategy to power systems, described by linear frequency dynamics around the nominal operating point. Our methodology is based on the notion of data aggregation as a tool for extracting internal information about the system that may be unknown to the attacker. As the first step to resilience and security, we propose several methods for active attack detection in cyber-physical systems. In one approach we design a clustering-based moving-target active detection algorithm and evaluate it against stealthy attacks on the 5-bus and 24-bus power grids. Next, we consider an approach based on Interaction Variables (IntVar), as another intuitive way to extract internal information in power grids. We evaluate the eectiveness of this approach on Automatic Generation Control (AGC), a vital control mechanism in today’s power grid. After an attack has been detected, mitigation procedures must be put in place to allow continued reliable operation or graceful degradation of the power grid. To that end, we develop a resilient state estimation algorithm, that provides the system operator with situational awareness in the presence of wide-spread coordinated cyber-attacks when many system measurements may become unavailable.

Download or read book Power System State Estimation written by Ali Abur and published by CRC Press. This book was released on 2004-03-24 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering an up-to-date account of the strategies utilized in state estimation of electric power systems, this text provides a broad overview of power system operation and the role of state estimation in overall energy management. It uses an abundance of examples, models, tables, and guidelines to clearly examine new aspects of state estimation, the testing of network observability, and methods to assure computational efficiency. Includes numerous tutorial examples that fully analyze problems posed by the inclusion of current measurements in existing state estimators and illustrate practical solutions to these challenges. Written by two expert researchers in the field, Power System State Estimation extensively details topics never before covered in depth in any other text, including novel robust state estimation methods, estimation of parameter and topology errors, and the use of ampere measurements for state estimation. It introduces various methods and computational issues involved in the formulation and implementation of the weighted least squares (WLS) approach, presents statistical tests for the detection and identification of bad data in system measurements, and reveals alternative topological and numerical formulations for the network observability problem.

Download or read book Cyberphysical Infrastructures in Power Systems written by Magdi S. Mahmoud and published by Academic Press. This book was released on 2021-10-23 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Secure State Estimation and Attack Reconstruction in Cyber Physical Systems written by Shamila Nateghi and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A cyber-physical system (CPS) is a tight coupling of computational resources, network communication, and physical processes. They are composed of a set of networked components, including sensors, actuators, control processing units, and communication agents that instrument the physical world to make ,Äúsmarter.,Äù However, cyber components are also the source of new, unprecedented vulnerabilities to malicious attacks. In order to protect a CPS from attacks, three security levels of protection, detection, and identification are considered. In this chapter, we will discuss the identification level, i.e., secure state estimation and attack reconstruction of CPS with corrupted states and measurements. Considering different attack plans that may assault the states, sensors, or both of them, different online attack reconstruction approaches are discussed. Fixed-gain and adaptive-gain finite-time convergent observation algorithms, specifically sliding mode observers, are applied to online reconstruction of sensor and state attacks. Next, the corrupted measurements and states are to be cleaned up online in order to stop the attack propagation to the CPS via the control signal. The proposed methodologies are applied to an electric power network, whose states and sensors are under attack. Simulation results illustrate the efficacy of the proposed observers.

Download or read book Experiences on Use of State Estimator in Power System Operations written by Veera Raju Vinnakota and published by Springer Nature. This book was released on with total page 626 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Security of Cyber Physical Systems written by Hadis Karimipour and published by Springer Nature. This book was released on 2020-07-23 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a comprehensive overview of security issues in Cyber Physical Systems (CPSs), by analyzing the issues and vulnerabilities in CPSs and examining state of the art security measures. Furthermore, this book proposes various defense strategies including intelligent attack and anomaly detection algorithms. Today’s technology is continually evolving towards interconnectivity among devices. This interconnectivity phenomenon is often referred to as Internet of Things (IoT). IoT technology is used to enhance the performance of systems in many applications. This integration of physical and cyber components within a system is associated with many benefits; these systems are often referred to as Cyber Physical Systems (CPSs). The CPSs and IoT technologies are used in many industries critical to our daily lives. CPSs have the potential to reduce costs, enhance mobility and independence of patients, and reach the body using minimally invasive techniques. Although this interconnectivity of devices can pave the road for immense advancement in technology and automation, the integration of network components into any system increases its vulnerability to cyber threats. Using internet networks to connect devices together creates access points for adversaries. Considering the critical applications of some of these devices, adversaries have the potential of exploiting sensitive data and interrupting the functionality of critical infrastructure. Practitioners working in system security, cyber security & security and privacy will find this book valuable as a reference. Researchers and scientists concentrating on computer systems, large-scale complex systems, and artificial intelligence will also find this book useful as a reference.

Download or read book Machine Learning Assisted Digital Twin for Event Identification in Electrical Power System written by Xinya Song and published by BoD – Books on Demand. This book was released on 2023 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Event based State Estimation in Cyber physical Systems written by Dawei Shi and published by . This book was released on 2014 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on event-based state estimation problems in the context of cyberphysical systems (CPSs), targeting at low-complexity event-based state estimators that are optimal in a certain sense. The motivation stems from the resource limitations in the applications of CPSs (e.g., wireless sensor networks) as well as the increased computation burden in calculating the optimal state estimates caused by the eventtriggering conditions. Several event-based estimation problems are formulated and solved using different approaches, including the maximum likelihood estimation approach, the approximate Gaussian filtering approach, the set-valued Kalman filtering approach and the change of probability measure approach. For all these investigations, optimal state estimates with simple structures that can be recursively calculated are obtained, which form the major contributions of this thesis. Also, the performance improvements in the sense of average estimation errors by exploiting the information contained in the eventtriggering conditions are addressed either by theoretical proofs or extensive numerical simulations. Several results on communication rate analysis are proposed, which are relevant and necessary for event-based estimation, considering the potential communication resource limitations in CPSs. Based on the developed results, the outcome of the research attempts on eventbased estimation is encouraging, and a distinct and systematic approach to eventbased estimation seems on the horizon. The results are not only of theoretical value, but are potentially implementable to a variety of applications in industrial processes, due to the practical considerations in both the problem formulations and the design procedures.

Download or read book Machine Learning for Embedded System Security written by Basel Halak and published by Springer Nature. This book was released on 2022-04-22 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprehensively covers the state-of-the-art security applications of machine learning techniques. The first part explains the emerging solutions for anti-tamper design, IC Counterfeits detection and hardware Trojan identification. It also explains the latest development of deep-learning-based modeling attacks on physically unclonable functions and outlines the design principles of more resilient PUF architectures. The second discusses the use of machine learning to mitigate the risks of security attacks on cyber-physical systems, with a particular focus on power plants. The third part provides an in-depth insight into the principles of malware analysis in embedded systems and describes how the usage of supervised learning techniques provides an effective approach to tackle software vulnerabilities.

Download or read book Hierarchical Modeling of Energy Systems written by Nikolai I. Voropai and published by Elsevier. This book was released on 2023-08-03 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hierarchical Modeling of Energy Systems presents a detailed methodology for hierarchical modeling of large-scale complex systems with a focus on energy systems and their expansion planning and control. General methodological principles of hierarchical modeling are analyzed, and based on this analysis, a generalized technology for the hierarchical approach is presented. The mathematical foundations of decomposition and bi-level programming, as well as the possibility of using information technologies are also considered. The theoretical propositions are demonstrated by numerous hierarchical modeling examples aimed at planning the development of the energy sector and expansion of energy systems, analyzing, and optimizing these systems, and controlling their operation. In addition, codes and sample simulations are included throughout. This is an invaluable guide for researchers, engineers, and other specialists involved in the development, control and management of energy systems, while the summary of fundamental principles and concepts in energy modeling makes this an accessible learning tool for graduate students on any course involving energy systems or energy modeling. - Summarizes hierarchical modeling principles and methods - Critically evaluates all energy systems including electric power systems, heat supply systems, gas, and coal supply systems, integrated and cogeneration systems, its interrelations and more - Examines expansion planning, development and operation, control and management of energy systems - Provides a detailed mathematical descriptions of models, computation algorithms, and optimization problems

Download or read book Detection of False Data Injection Attacks in Smart Grid Cyber Physical Systems written by Beibei Li and published by Springer Nature. This book was released on 2020-11-05 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: ​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.