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| Author | : Armando Llamas |
| Publisher | : |
| Total Pages | : 362 |
| Release | : 1992 |
| Genre | : Online data processing |
| ISBN | : |
| Author | : Hsiao-Dong Chiang |
| Publisher | : John Wiley & Sons |
| Total Pages | : 461 |
| Release | : 2011-03-16 |
| Genre | : Technology & Engineering |
| ISBN | : 1118088123 |
Learn how to implement BCU methods for fast direct stability assessments of electric power systems Electric power providers around the world rely on stability analysis programs to help ensure uninterrupted service to their customers. These programs are typically based on step-by-step numerical integrations of power system stability models to simulate system dynamic behaviors. Unfortunately, this offline practice is inadequate to deal with current operating environments. For years, direct methods have held the promise of providing real-time stability assessments; however, these methods have presented several challenges and limitations. This book addresses these challenges and limitations with the BCU methods developed by author Hsiao-Dong Chiang. To date, BCU methods have been adopted by twelve major utility companies in Asia and North America. In addition, BCU methods are the only direct methods adopted by the Electric Power Research Institute in its latest version of DIRECT 4.0. Everything you need to take full advantage of BCU methods is provided, including: Theoretical foundations of direct methods Theoretical foundations of energy functions BCU methods and their theoretical foundations Group-based BCU method and its applications Numerical studies on industrial models and data Armed with a solid foundation in the underlying theory of direct methods, energy functions, and BCU methods, you'll discover how to efficiently solve complex practical problems in stability analysis. Most chapters begin with an introduction and end with concluding remarks, making it easy for you to implement these tested and proven methods that will help you avoid costly and dangerous power outages.
| Author | : Chenxi Dai |
| Publisher | : |
| Total Pages | : 22 |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
Direct methods are an alternative for power system transient stability analysis to avoid the enormous computational efforts of conventional time-domain method. The development of direct methods in last three decades makes it an effective potential approach to both on-line security assessment and off-line analysis tools. Among the direct methods, the Boundary of stability region based Controlling Unstable equilibrium point (BCU) method is the most successful, having a sound theoretical basis and practical application in power systems. It finds the controlling UEP of the original system via a reduced-state system. This thesis investigates the development of direct methods and the related theoretical foundation. Several widely used direct methods are presented and compared. The theoretical foundation and computational issues of BCU methods are discussed. Incorporation of more realistic power system models can be incorporated in BCU methods is introduced. Based on BCU method, some small system cases are tested for a given fault.
| Author | : Mania Pavella |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 262 |
| Release | : 2000-10-31 |
| Genre | : Business & Economics |
| ISBN | : 9780792379638 |
Three Belgian researchers (U. of Liege) look at one unified approach to on-line dynamic security assessment and control to enable a power system to withstand unexpected contingencies without experiencing voltage or transient instabilities. The problem has greatly increased since deregulation, when utilities are being operated much closer to their limits in order to generate private profit. Their approach is called Single Machine Equivalent, SIME to its friends, and is a hybrid direct-temporal method that processes information about the system behavior in order to get one-shot stability assessment in the same way as direct methods. Preventative SIME relies on time-domain programs to get information about simulated stability scenarios of anticipated contingencies, and emergency SIME uses real-time measurements that take into account the actual occurrence of a contingency. Annotation copyrighted by Book News, Inc., Portland, OR
| Author | : Robert Owusu-Mireku |
| Publisher | : |
| Total Pages | : 546 |
| Release | : 2018 |
| Genre | : |
| ISBN | : |
The structure, layout, and components of the electric power grid are changing rapidly leading to new components, models, and power system static and dynamic behaviors that existing power system analysis tools cannot accommodate. Since electricity is an integral part of our daily lives, it is important that power system analysis and control tools keep up with the changes in the power grid. An existing methodology/tool with the potential to help the power industry keep up with the changing needs for dynamic stability and control of the power system, due to its strong theoretical basis, is the boundary of the stability region based controlling unstable equilibrium point (BCU) method. This thesis develops tools for the online transient stability analysis and control of modern power systems using the BCU method. Towards this goal we first propose a method for improving the robustness of unstable equilibrium point computations using a combination of quotient gradient transformation and the pseudo-transient continuation method. We also extend the application of the BCU method to the assessment of the transient stability of power systems with nonlinear excitation system models. The thesis also studies the dynamics of transmission line switching events under changing loading conditions and proposes and implements a novel BCU-based method for the direct transient stability assessment of transmission switching events. A method based on a three-stage strategy is also proposed for the fast determination of transmission line switching candidates that can be used to enhance the transient stability of multiple contingencies for look-ahead loading conditions of a power system. Finally, a three-stage, fast scenario-based tool for the online transient stability assessments of power systems with load or generation uncertainties under look-ahead load conditions is proposed and implemented.
| Author | : Abdel-Azia Fouad |
| Publisher | : Pearson Education |
| Total Pages | : 381 |
| Release | : 1991-08-01 |
| Genre | : Technology & Engineering |
| ISBN | : 0132440512 |
This book details the state of the art in the development and application of the transient energy function (TEF) method as a tool for power system transient stability assessment. It provides both the analytical foundations of the TEF method and the practical issues involved in the application of the method to analyze power systems. Of primary interest to electric utility engineers who need to understand and apply the technique, as well as engineers in research organizations involved in research and development projects on power system dynamics, and utility engineers interested in the use of the TEF method as a tool for dynamic security assessment.
| Author | : Pravin Pratap Varaiya |
| Publisher | : |
| Total Pages | : 34 |
| Release | : 1984 |
| Genre | : |
| ISBN | : |
| Author | : A. J. Calvaer |
| Publisher | : Elsevier |
| Total Pages | : 549 |
| Release | : 2014-05-23 |
| Genre | : Technology & Engineering |
| ISBN | : 1483298914 |
The control of power systems and power plants is a subject of worldwide interest which continues to sustain a high level of research, development and application. Papers pertaining to areas directly related to power systems and representing the state-of-the-art methods are included in this volume. The topics covered include security analysis, dynamic state estimation, voltage control, power plant control, stability analysis, data communication, expert systems and training simulators for power plants. This interchange between those involved in the research and those involved in the practical applications of new ideas and developments provide a comprehensive reference source for all involved in the power industry.
| Author | : M.A. Pai |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 245 |
| Release | : 2012-12-06 |
| Genre | : Technology & Engineering |
| ISBN | : 1461316359 |
This research monograph is in some sense a sequel to the author's earlier one (Power System Stability, North Holland, New York 1981) which devoted cons- erable attention to Lyapunov stability theory, construction of Lyapunov fu- tions and vector Lyapunov functions as applied to power systems. This field of research has rapidly grown since 1981 and the more general concept of energy funct ion has found wide spread application in power systems. There have been advances in five distinct areas (i) Developing energy functions for structure preserving models which can incorporate non-linear load models (ii) Energy fu- tions to include detailed model of the generating unit i. e. , the synchronous machine and the excitation system (iii) Reduced order energy functions for large scale power systems, the simplest being the single machine infinite bus system (iv) Characterization of the stability boundary of the post-fault stable eQui- brium point (v) Applications for large power networks as a tool for dynamic security assessment. It was therefore felt appropriate to capture the essential features of these advances and put them in a somewhat cohesive framework. The chapters in the book rough ly fo llow this sequence. It is interesting to note how different research groups come to the same conclusion via different reas- ings.
| Author | : Mania Pavella |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 251 |
| Release | : 2012-12-06 |
| Genre | : Technology & Engineering |
| ISBN | : 1461543193 |
The market liberalization is expected to affect drastically the operation of power systems, which under economical pressure and increasing amount of transactions are being operated much closer to their limits than previously. These changes put the system operators faced with rather different and much more problematic scenarios than in the past. They have now to calculate available transfer capabilities and manage congestion problems in a near on line environment, while operating the transmission system under extremely stressed conditions. This requires highly reliable and efficient software aids, which today are non-existent, or not yet in use. One of the most problematic issues, very much needed but not yet en countered today, is on-line dynamic security assessment and control, enabling the power system to withstand unexpected contingencies without experienc ing voltage or transient instabilities. This monograph is devoted to a unified approach to transient stability assessment and control, called SIngle Machine Equivalent (S1ME).
