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1. |
Record Nr. |
UNINA9910144432103321 |
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Autore |
Horowitz Stanley H. <1925-> |
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Titolo |
Power System Relaying |
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Pubbl/distr/stampa |
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ISBN |
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9781282343511 |
1282343513 |
9780470758786 |
0470758783 |
9781615835973 |
1615835970 |
9780470758793 |
0470758791 |
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Edizione |
[3rd ed.] |
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Descrizione fisica |
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1 online resource (349 p.) |
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Collana |
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Altri autori (Persone) |
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Disciplina |
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Soggetti |
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Electric power systems -- Protection |
Electronic books. -- local |
Protective relays |
Protective relays - Protection |
Electric power systems |
Electrical Engineering |
Electrical & Computer Engineering |
Engineering & Applied Sciences |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di contenuto |
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POWER SYSTEM RELAYING; Contents; Preface to the third edition; Preface to the second edition; Preface to the first edition; 1 Introduction to protective relaying; 1.1 What is relaying?; 1.2 Power system structural considerations; 1.3 Power system bus configurations; 1.4 The nature of relaying; 1.5 Elements of a protection system; 1.6 International practices; 1.7 Summary; Problems; References; 2 Relay operating principles; 2.1 Introduction; 2.2 Detection of faults; 2.3 Relay |
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designs; 2.4 Electromechanical relays; 2.5 Solid-state relays; 2.6 Computer relays |
2.7 Other relay design considerations2.8 Control circuits, a beginning; 2.9 Summary; Problems; References; 3 Current and voltage transformers; 3.1 Introduction; 3.2 Steady-state performance of current transformers; 3.3 Transient performance of current transformers; 3.4 Special connections of current transformers; 3.5 Linear couplers and electronic current transformers; 3.6 Voltage transformers; 3.7 Coupling capacitor voltage transformers; 3.8 Transient performance of CCVTs; 3.9 Electronic voltage transformers; 3.10 Summary; Problems; References |
4 Nonpilot overcurrent protection of transmission lines4.1 Introduction; 4.2 Fuses, sectionalizers, reclosers; 4.3 Inverse, time-delay overcurrent relays; 4.4 Instantaneous overcurrent relays; 4.5 Directional overcurrent relays; 4.6 Polarizing; 4.7 Summary; Problems; References; 5 Nonpilot distance protection of transmission lines; 5.1 Introduction; 5.2 Stepped distance protection; 5.3 R-X diagram; 5.4 Three-phase distance relays; 5.5 Distance relay types; 5.6 Relay operation with zero voltage; 5.7 Polyphase relays; 5.8 Relays for multi-terminal lines; 5.9 Protection of parallel lines |
5.10 Effect of transmission line compensation devices5.11 Loadability of relays; 5.12 Summary; Problems; References; 6 Pilot protection of transmission lines; 6.1 Introduction; 6.2 Communication channels; 6.3 Tripping versus blocking; 6.4 Directional comparison blocking; 6.5 Directional comparison unblocking; 6.6 Underreaching transfer trip; 6.7 Permissive overreaching transfer trip; 6.8 Permissive underreaching transfer trip; 6.9 Phase comparison relaying; 6.10 Current differential; 6.11 Pilot wire relaying; 6.12 Multi-terminal lines; 6.13 Summary; Problems; References |
7 Rotating machinery protection7.1 Introduction; 7.2 Stator faults; 7.3 Rotor faults; 7.4 Unbalanced currents; 7.5 Overload; 7.6 Overspeed; 7.7 Abnormal voltages and frequencies; 7.8 Loss of excitation; 7.9 Loss of synchronism; 7.10 Power plant auxiliary system; 7.11 Winding connections; 7.12 Startup and motoring; 7.13 Inadvertent energization; 7.14 Torsional vibration; 7.15 Sequential tripping; 7.16 Summary; Problems; References; 8 Transformer protection; 8.1 Introduction; 8.2 Overcurrent protection; 8.3 Percentage differential protection; 8.4 Causes of false differential currents |
8.5 Supervised differential relays |
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Sommario/riassunto |
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The previous two editions of <i>Power System Relaying</i> offer comprehensive and accessible coverage of the theory and fundamentals of relaying and have been widely adopted on university and industry courses worldwide. With the third edition, the authors have added new and detailed descriptions of power system phenomena such as stability, system-wide protection concepts and discussion of historic outages. <i>Power System Relaying</i>, 3rd Edition continues its role as an outstanding textbook on power system protection for senior and graduate students in the field of electric power engineering |
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2. |
Record Nr. |
UNINA9910254188403321 |
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Titolo |
Progress in Wall Turbulence 2 : Understanding and Modelling / / edited by Michel Stanislas, Javier Jimenez, Ivan Marusic |
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Pubbl/distr/stampa |
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Cham : , : Springer International Publishing : , : Imprint : Springer, , 2016 |
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ISBN |
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Edizione |
[1st ed. 2016.] |
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Descrizione fisica |
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1 online resource (430 p.) |
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Collana |
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ERCOFTAC Series, , 2215-1826 ; ; 23 |
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Disciplina |
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Soggetti |
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Fluid mechanics |
Aerospace engineering |
Astronautics |
Continuum mechanics |
Engineering Fluid Dynamics |
Aerospace Technology and Astronautics |
Continuum Mechanics |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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"Contributions from participants of the second WALLTURB workshop on "Understanding and modelling of wall turbulence" held in Lille (France) from June 18 to 20, 2014"--Preface. |
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Nota di bibliografia |
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Includes bibliographical references. |
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Nota di contenuto |
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On the Size of the Eddies in the Outer Turbulent Wall Layer: Evidence from Velocity Spectra -- Sensitized-RANS Modelling of Turbulence: Resolving Turbulence Unsteadiness by a (Near-wall) Reynolds Stress Model -- Coherent Structures in Wall-bounded Turbulence -- Attached Eddies and High-order Statistics -- DNS of Turbulent Boundary Layers in the Quasi-laminarization Process -- Numerical ABL Wind Tunnel Simulations with Direct Modeling of Roughness Elements through Immersed Boundary Condition Method -- Three-dimensional Nature of 2D Hairpin Packet Signatures in a DNS of a Turbulent Boundary Layer -- Wall Pressure Signature in Compressible Turbulent Boundary Layers -- Three-dimensional Structure of Pressure-Velocity Correlations in a Turbulent Boundary Layer -- Computation of Complex Terrain Turbulent Flows Using Hybrid Algebraic Structure-based Models (ASBM) and LES. |
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Sommario/riassunto |
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This is the proceedings of the ERCOFTAC Workshop on Progress in Wall Turbulence: Understanding and Modelling, that was held in Lille, France from June 18 to 20, 2014. The workshop brought together world specialists of near wall turbulence and stimulated exchanges between them around up-to-date theories, experiments, simulations and numerical models. This book contains a coherent collection of recent results on near wall turbulence including theory, new experiments, DNS, and modeling with RANS, LES.The fact that both physical understanding and modeling by different approaches are addressed by the best specialists in a single workshop is original. |
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