1.

Record Nr.

UNINA9910704890103321

Autore

Carlisle Daren M.

Titolo

Ecological health in the nation's streams / / by Daren M. Carlisle and Michael D. Woodside

Pubbl/distr/stampa

[Reston, Va.] : , : U.S. Department of the Interior, U.S. Geological Survey, , 2013

Descrizione fisica

1 online resource (6 pages) : color illustrations

Collana

Fact sheet ; ; 2013-3033

Soggetti

Stream health - United States

Stream ecology - United States

Algal populations - United States

Water quality - United States

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

"July 2013."

Title from title screen (viewed on Nov. 25, 2013).

Nota di bibliografia

Includes bibliographical references (page 6).



2.

Record Nr.

UNINA9910791330103321

Autore

Peelo David F

Titolo

Current interruption transients calculation / / David F. Peelo

Pubbl/distr/stampa

West Sussex, England : , : John Wiley & Sons, , 2014

©2014

ISBN

1-118-70721-4

1-118-70722-2

1-118-70719-2

Descrizione fisica

1 online resource (248 p.)

Disciplina

621.319/21

Soggetti

Transients (Electricity) - Mathematical models

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references and index.

Nota di contenuto

Current Interruption Transients Calculation; Contents; Preface; 1 Introduction; 1.1 Background; 1.2 Short-Circuit Rating Basis for High-Voltage Circuit Breakers; 1.3 Current Interruption Terminology; Bibliography; 2 RLC Circuits; 2.1 General; 2.2 Series RLC Circuit with Step Voltage Injection; 2.3 Source-Free Series RLC Circuit with Precharged Capacitor; 2.4 Source-Free Parallel RLC Circuit with Precharged Capacitor; 2.5 Parallel RLC Circuit with Ramp Current Injection; 2.6 Alternative Equations; 2.7 Travelling Wave Basics; 2.8 Summary; Bibliography; 3 Pole Factor Calculation; 3.1 General

3.2 Pole Factors: Effectively Earthed Systems3.3 Pole Factors: Non-Effectively Earthed Systems; 3.4 Alternative Pole Factor Calculation Method; 3.5 Three-Phase Test Circuit Arrangement; 3.6 Summary; Bibliography; 4 Terminal Faults; 4.1 General Considerations; 4.2 Standard TRV Derivation; 4.3 Effect of Added Capacitance; 4.4 Effect of Added Resistance; 4.5 Effect of Added Inductance; 4.6 Out-of-Phase Switching; 4.7 Asymmetrical Currents; 4.8 Double Earth Faults; 4.9 Summary; Bibliography; 5 Short-Line Faults; 5.1 General; 5.2 Line-Side Voltage Calculation; 5.3 Effect of Added Capacitance

5.4 DiscussionBibliography; 6 Inductive Load Switching; 6.1 General; 6.2 General Shunt Reactor Switching Case; 6.3 Shunt Reactors with Isolated Neutrals; 6.4 Shunt Reactors with Neutral Reactor Earthed



Neutrals; 6.5 Shunt Reactors with Earthed Neutrals; 6.6 Re-Ignitions; 6.7 Unloaded Transformer Switching; 6.8 Discussion; 6.9 Summary; Bibliography; 7 Capacitive Load Switching; 7.1 General; 7.2 Shunt Capacitor Banks; 7.2.1 Energization; 7.2.2 De-Energization; 7.2.3 Outrush; 7.3 Transmission Lines; 7.4 Cables; 7.5 Summary; Bibliography; 8 Circuit Breaker Type Testing; 8.1 Introduction

8.2 Circuit Breaker Interrupting Time8.3 Inherent Transient Recovery Voltages; 8.4 Inductive Load Switching; 8.5 Capacitive Current Switching; Bibliography; Appendix A: Differential Equations; Bibliography; Appendix B: Principle of Duality; Appendix C: Useful Formulae; Appendix D: Euler's Formula; Bibliography; Appendix E: Asymmetrical Current-Calculating Areas Under Curves; Appendix F: Shunt Reactor Switching: First-Pole-to-Clear Circuit Representation; Appendix G: Special Case: Interrupting Small Capacitive Currents; Bibliography; Appendix H: Evolution of Transient Recovery Voltages

H.1 IntroductionH.2 TRVs: Terminal Faults; H.3 Terminal Fault TRV Standardization; H.4 Short-Line Fault; H.5 Inductive and Capacitive Load Current Switching; H.6 Terminal Fault TRV Calculation; H.6.1 Pole Factor Calculation; H.6.2 Transient Calculation; Bibliography; Index

Sommario/riassunto

Provides an original, detailed and practical description of current interruption transients, origins, and the circuits involved, and how they can be calculated Current Interruption Transients Calculationis a comprehensive resource for the understanding, calculation and analysis of the transient recovery voltages (TRVs) and related re-ignition or re-striking transients associated with fault current interruption and the switching of inductive and capacitive load currents in circuits.  This book provides an original, detailed and practical description of current interruption