Screen LibraryCurrent interruption transients calculation /
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. Provides an origina...
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| Main Authors: | |
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| Published: |
John Wiley & Sons Inc.,
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| Publisher Address: | Chichester, West Sussex, United Kingdom: |
| Publication Dates: | 2014. |
| Literature type: | eBook |
| Language: | English |
| Subjects: | |
| Online Access: |
http://onlinelibrary.wiley.com/book/10.1002/9781118707227 |
| Summary: |
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. Provides an original, detailed and practical description of current interruption transients, origins, and the circuits involved, and how they can be calculated and then analysed using only a hand calculator and a spreadsheet program. Key features: Detailed theory on all of the current interruption cases that can occur on a power system; Clear explanation on how to calculate transients, showing how four basic circuits can represent all transients and can be solved in general without any use of the 'classical' Laplace transform method; Series and parallel RLC circuit theory, followed by the calculation of pole factors using the symmetrical component method to derive the base power frequency components, with results applied to all the relevant transient cases; Fault current interruption and inductive and capacitive load current switching cases illustrated using real application examples. It will be of great interest to practicing engineers and electric utility staff involved in circuit breaker design, specification, testing, switchgear application, system operation and planning, and in particular, for engineers using simulation programs for transient calculations. It will also be useful for senior undergraduate and postgraduate electrical power engineering students.-- |
| Carrier Form: | 1 online resource. |
| Bibliography: | Includes bibliographical references and index. |
| ISBN: |
9781118707197 (Adobe PDF) 1118707192 (Adobe PDF) 9781118707210 (ePub) 1118707214 (ePub) 9781118707227 (electronic bk.) 1118707222 (electronic bk.) 1118600479 (cloth) 9781118600474 (cloth) 9781306403726 (MyiLibrary) 1306403723 (MyiLibrary) |
| Index Number: | TK3226 |
| CLC: | TM712 |
| Contents: |
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. |