Electrical Power System Protection

AvC. Christopoulos,A. Wright

Inbunden, Engelska, 1999

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Beskrivning

The book provides a sound and complete treatment of the fundamentals of power system protection and illustrates the principles with examples from current practice. The text includes many insights into modern technologies and research areas.

Produktinformation

Utgivningsdatum:1999-06-30
Mått:155 x 235 x 39 mm
Vikt:1 055 g
Format:Inbunden
Språk:Engelska
Antal sidor:608
Upplaga:2
Förlag:Chapman and Hall
ISBN:9780412817601

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Innehållsförteckning

1 Fuses.- 2 Current transformers.- 3 Voltage transformers.- 4 Overcurrent and earth fault protection.- 5 Current-differential protective schemes.- 6 The protection of transformers.- 7 The protection of rotating machines.- 8 The protection of busbars.- 9 The protection of overhead lines and cables by current-differential schemes.- 10 Interlock and phase-comparison schemes for the protection of overhead lines.- 11 Distance-type protective schemes for overhead lines and cables.- 12 Ultra-high-speed schemes for the protection of long transmission lines.- 13 Digital communications.- 14 Digital signal processing (DSP) and protection.- 15 New relaying concepts.- Appendix A The testing and application of power-system protective equipment.- A.1 Performance requirements.- A.2 Testing of protective devices and equipment.- A.2.1 Fuselinks.- A.2.2 Current and voltage transformers.- A.2.3 The testing of relays.- A.2.4 The testing of protective schemes.- A.3 Automatic testing of relays and protective schemes.- References.- Appendix B Percentage and per-unit quantities.- Appendix C Transformations of three-phase quantities.- C.1 Voltage, current and impedance transformation.- C.2 Transformation into symmetrical components.- C.3 Other transformations.- References.- Appendix D The determination of power-system behavior using symmetrical components.- D.1 Sequence impedances.- D.1.1 Three-phase synchronous machines.- D.1.2 Transformers.- D.1.3 Overhead lines and cables.- D.1.4 The effects of physical asymmetry.- D.2 Sequence networks.- D.2.1 Earthing of neutral points.- D.2.2 Transformer connections.- D.3 The interconnection of sequence networks.- D.3.1 Balanced three-phase normal or fault conditions.- D.3.2 Conditions when a phase-to-phase fault is present.- D.3.3 Conditions when a singlephase to earth fault is present.- D.3.4 Impedances used in sequence networks.- D.4 Numerical example.- D.4.1 Short-circuit between phases ‘b’ and ‘c’ and earth.- D.4.2 Short-circuit between phase ‘a’ and earth.- Reference.- Concluding remarks.