Author: Jiansheng Lei Publisher: ISBN: Category : Languages : en Pages :
Book Description
Power industry is undergoing a transition from the traditional regulated environment to the competitive power market. To have a reliable state estimator (SE) in the power market environment, two major challenges are emerging, i.e. to keep SE running reliably even under a contingency and to run SE over a grid with extremely large size. The objective of this dissertation is to use graph theory to address the above two challenges. To keep SE running reliably under a contingency, a novel topological approach is first proposed to identify critical measurements and examine network observability under a contingency. To advance the classical topological observability analysis, a new concept of contingency observability graph (COG) is introduced and it is proven that a power system network maintains its observability under a contingency if and only if its COG satisfies some conditions. As an application of COG, a two-stage heuristic topological approach is further developed based on the new concept of qualified COG (QCOG) to minimize the number of measurements and RTUs under the constraint that the system remains observable under any single contingency. To overcome the disadvantages of existing SE over extremely large networks, a textured distributed state estimator (DSE), which consists of the off-line textured architecture design and the on-line textured computation, is proposed based on COG and a new concept of Bus Credibility Index (BCI). The textured DSE is non-recursive, asynchronous and avoids central controlling node. Numerical tests verify that the performance of the new textured DSE algorithm improves greatly compared with existing DSE algorithms in respect of bad data detection and identification. Furthermore, the software implementation for DSE is formulated as an information integration problem over regional power markets, and is very challenging because of its size and complexity. A new concept of semantic knowledge warehouse (SKW), together with the proposed concepts of semantic reasoning software component (SRSC) and deduction credibility, is developed to implement such an information integration system.
Author: Jizhong Zhu Publisher: ISBN: 9781607413646 Category : Electric power distribution Languages : en Pages : 0
Book Description
There are several books on the applications of graph theory, but none of them are related to power systems applications. This book attempts to cover all applications of graph theory in the area of power systems. It consists of two parts. The first part, containing four Chapters, briefly introduces the basic concepts of graph theory, major properties, theorems, and algorithms in graph theory and network flow programming. This definitive treatment makes graph theory easy to understand. The second part, containing 10 Chapters, is the practical application of graph theory and network flow programming to all kinds of power systems problems, which is the key part of the book. These applications include network flow calculation of power flow, classical economic power dispatch, security constrained economic dispatch, multi-areas system economic dispatch, reactive power optimisation and pricing in multi-area environment, hydro-thermal power system operation, power system state estimation, secure economic automatic generation control, automatic contingency selection, distribution network optimisation, and optimal load shedding. The treatment of each application includes the mathematical representation of power system problem, its relationship with graph theory and network flow programming, as well as the implementations accompanied by examples of power system application problem, solution, and results analysis. Each chapter contains the related references that collectively form an extensive guide to the primary research literature.
Author: Ricardo Moreno Chuquen Publisher: Springer Nature ISBN: 3030575896 Category : Technology & Engineering Languages : en Pages : 62
Book Description
This book provides a detailed description of network science concepts applied to power systems and electricity markets, offering an appropriate blend of theoretical background and practical applications for operation and power system planning. It discusses an approach to understanding power systems from a network science perspective using the direct recognition of the interconnectivity provided by the transmission system. Further, it explores the network properties in detail and characterizes them as a tool for online and offline applications for power system operation. The book includes an in-depth explanation of electricity markets problems that can be addressed from a graph theory perspective. It is intended for advanced undergraduate and graduate students in the fields of electric energy systems, operations research, management science and economics. Practitioners in the electric energy sector also benefit from the concepts and techniques presented here.
Author: Veera Raju Vinnakota Publisher: Springer ISBN: 9783031628665 Category : Technology & Engineering Languages : en Pages : 0
Book Description
This book brings together successful case studies on the practical use of state estimators at both the transmission and distribution system levels in the power industry. Contributions are written by an international group of utility industry experts who have designed and implemented state estimators for managing their grid operations in real-time, providing readers with a solid background in the theoretical and functional aspects of running, supporting, and maintaining the operation of state estimators on an ongoing basis. Experiences on Use of State Estimator in Power System Operations provides a comprehensive picture of state estimators in a practical setting and is a valuable hands-on reference for system operators and engineers who need to enhance their understanding of the use of state estimation in utility operations.
Author: Kai Yin Kenny Poon Publisher: ISBN: 9781267476951 Category : Languages : en Pages :
Book Description
The actual implementation of a state estimator, however, depends on various factors, such as the time skew of data, the accuracy of the network database, the availability of raw data versus state-estimated data, and sensitive issues regarding the proprietary nature of the data. These issues are studied in this dissertation to determine the data exchange requirements for minimizing the errors in state estimation.
Author: T K Nagsarkar Publisher: Oxford University Press, USA ISBN: Category : Technology & Engineering Languages : en Pages : 720
Book Description
Power Systems Analysis provides a thorough understanding of the principles and techniques of power system analysis and their application to real-world problems. Beginning with basic concepts, the book gives an exhaustive coverage of transmission line parameters, symmetrical and unsymmetrical fault analysis and power flow studies. The book includes seperate chapters on state estimation, stability analysis and contingency analysis and also provides and introduction to HVDC and FACTS. Relevant topics such as power quality and power management are also dealt with. The book extensively illustrates the use of MATLAB in the analysis of power systems. With its lucid style of presentation, the book should be useful to both students and practising engineers.
Author: Mohammad Shahidehpour Publisher: John Wiley & Sons ISBN: 0471462918 Category : Technology & Engineering Languages : en Pages : 557
Book Description
The first extensive reference on these important techniques The restructuring of the electric utility industry has created the need for a mechanism that can effectively coordinate the various entities in a power market, enabling them to communicate efficiently and perform at an optimal level. Communication and Control in Electric Power Systems, the first resource to address its subject in an extended format, introduces parallel and distributed processing techniques as a compelling solution to this critical problem. Drawing on their years of experience in the industry, Mohammad Shahidehpour and Yaoyu Wang deliver comprehensive coverage of parallel and distributed processing techniques with a focus on power system optimization, control, and communication. The authors begin with theoretical background and an overview of the increasingly deregulated power market, then move quickly into the practical applications and implementations of these pivotal techniques. Chapters include: Integrated Control Center Information Parallel and Distributed Computation of Power Systems Common Information Model and Middleware for Integration Online Distributed Security Assessment and Control Integration, Control, and Operation of Distributed Generation Agent Theory and Power Systems Management e-Commerce of Electricity A ready resource for both students and practitioners, Communication and Control in Electric Power Systems proves an ideal textbook for first-year graduate students in power engineering with an interest in computer communication systems and control center design. Designers, operators, planners, and researchers will likewise appreciate its unique contribution to the professional literature.
Author: Jos Arrillaga Publisher: ISBN: Category : Technology & Engineering Languages : en Pages : 450
Book Description
Describes the use of power system component models and efficient computational techniques in the development of a new generation of programs representing the steady and dynamic states of electrical power systems. Presents main computational and transmission system developments. Derives steady state models of a.c. and d.c. power systems plant components, describes a general purpose phase a.c. load flow program emphasizing Newton Fast Decoupled Algorithm, and more. Considers all aspects of the power system in the dynamic state.
Author: Ali Abur Publisher: CRC Press ISBN: 9780203913673 Category : Technology & Engineering Languages : en Pages : 350
Book Description
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.
Author: Jiansheng Lei
Author: Jizhong Zhu
Author: Ricardo Moreno Chuquen
Author: Veera Raju Vinnakota
Author: Kai Yin Kenny Poon
Author: T K Nagsarkar
Author: Mohammad Shahidehpour
Author: 
Author: Jos Arrillaga
Author: Ali Abur