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SWITCHGEAR AND PROTECTION

U.A. Bakshi

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Description:1. Introduction to Protective Relaying and Electromagnetic Relays (Chapter - 1)Faults, Causes and effects, Protective zones, Primary and backup protection, Desirable qualities and terms of protective relaying, Basic connection of trip circuit, Types of relay units, Relay pick up, Reset or drop out, Pick up/drop off ratio, Construction and working of different electromagnetic relays2. Over Current Protection of Transmission Line (Chapter - 2)Introduction, Fuse, Thermal relays, Over current relays, Application of definite time and IDMT O.C. relays for protection of feeder, Directional over current relay, Limitations of O.C. Relays.3. Differential Protection (Chapter - 3)Simple differential protection, Zone of protection and actual behavior of simple differential protection, Percentage differential protection, Earth leakage protection.4. Transformer Protection (Chapter - 4)Types of faults, Over current protection, Percentage differential protection, Inrush phenomenon, High resistance ground faults in transformers, Interturn faults, Incipient faults, Over-fluxing phenomenon5. Distance Protection of Transmission Line (Chapter - 5)Drawbacks of O.C. protection, Introduction to distance protection, Types of Distance Relay, Impedance, Reactance, MHO relay, Performance of distance relay during normal load and power swing, Effect of arc resistance on reach of distance relays, Comparison of distance relays, Distance protection of transmission line, Reasons for Inaccuracy of distance relay reach, Three step protection, Trip contact configuration, 3-step protection of double and fed lines.6. Carrier Aided Protection of Transmission Lines (Chapter - 6)Need for carrier aided protection of transmission lines, Various options for carrier, Coupling and trapping the carrier into the desired line section, Single line to ground coupling, Line to line coupling, Unit type carrier aided directional comparison relaying, Carrier aided distance scheme for acceleration of zone II, Transfer trip or inter trip, Permissive inter trip, Acceleration of zone II, Pre-acceleration of zone II, Phase comparison relaying (unit scheme).7. Generator Protection (Chapter - 7)Various faults & abnormal operation conditions, Stator & rotor faults, Transverse differential protection, Unbalanced loading, Over speeding, loss of excitation, Loss of prime mover.8. Induction Motor Protection (Chapter - 8)Various faults & abnormal operation conditions, starting of induction motor, protection of small & large induction motor.9. Numerical Protection (Chapter - 9)Introduction, block diagram of numerical relay, Numerical over current protection, Numerical transformer protection, Numerical distance protection of transmission line.10. Theory of Circuit Interruption (Chapter - 10)Introduction, Physics of arc phenomena, Maintenance of the arc, Losses from plasma, Essential properties of arc, Arc interruption theories.11. Circuit Constant in Relation to Circuit Breaking (Chapter - 10)Introduction, Circuit breaker rating, Circuit constants & circuit conditions Restriking voltage transient Characteristics of re-striking voltage, Interaction between the breaker & circuit, Current chopping, Duties of switchgear.12. Theory & Practice of Conventional Circuit Breaker and Modern Circuit Breakers (Chapter - 11)Automatic switch, Air-break circuit breakers, Oil circuit breakers, Single and multi break Construction, Air-blast circuit breaker, Performance of circuit breakers and system requirements, Modification of circuit breaker duty by shunt resistors, Power factor correction by series resistance, Comparative merits of different types of conventional circuit breakers, Modern trends, Vacuum circuit breakers, Sulphur hexafluoride (SF6) circuit breakers D.C. circuit breaker, auto-reclosing - definitions & features, 3-Phase versus 1-Phase auto-reclosingWe have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with SWITCHGEAR AND PROTECTION. To get started finding SWITCHGEAR AND PROTECTION, you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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ISBN: 9350381664

Description: 1. Introduction to Protective Relaying and Electromagnetic Relays (Chapter - 1)Faults, Causes and effects, Protective zones, Primary and backup protection, Desirable qualities and terms of protective relaying, Basic connection of trip circuit, Types of relay units, Relay pick up, Reset or drop out, Pick up/drop off ratio, Construction and working of different electromagnetic relays2. Over Current Protection of Transmission Line (Chapter - 2)Introduction, Fuse, Thermal relays, Over current relays, Application of definite time and IDMT O.C. relays for protection of feeder, Directional over current relay, Limitations of O.C. Relays.3. Differential Protection (Chapter - 3)Simple differential protection, Zone of protection and actual behavior of simple differential protection, Percentage differential protection, Earth leakage protection.4. Transformer Protection (Chapter - 4)Types of faults, Over current protection, Percentage differential protection, Inrush phenomenon, High resistance ground faults in transformers, Interturn faults, Incipient faults, Over-fluxing phenomenon5. Distance Protection of Transmission Line (Chapter - 5)Drawbacks of O.C. protection, Introduction to distance protection, Types of Distance Relay, Impedance, Reactance, MHO relay, Performance of distance relay during normal load and power swing, Effect of arc resistance on reach of distance relays, Comparison of distance relays, Distance protection of transmission line, Reasons for Inaccuracy of distance relay reach, Three step protection, Trip contact configuration, 3-step protection of double and fed lines.6. Carrier Aided Protection of Transmission Lines (Chapter - 6)Need for carrier aided protection of transmission lines, Various options for carrier, Coupling and trapping the carrier into the desired line section, Single line to ground coupling, Line to line coupling, Unit type carrier aided directional comparison relaying, Carrier aided distance scheme for acceleration of zone II, Transfer trip or inter trip, Permissive inter trip, Acceleration of zone II, Pre-acceleration of zone II, Phase comparison relaying (unit scheme).7. Generator Protection (Chapter - 7)Various faults & abnormal operation conditions, Stator & rotor faults, Transverse differential protection, Unbalanced loading, Over speeding, loss of excitation, Loss of prime mover.8. Induction Motor Protection (Chapter - 8)Various faults & abnormal operation conditions, starting of induction motor, protection of small & large induction motor.9. Numerical Protection (Chapter - 9)Introduction, block diagram of numerical relay, Numerical over current protection, Numerical transformer protection, Numerical distance protection of transmission line.10. Theory of Circuit Interruption (Chapter - 10)Introduction, Physics of arc phenomena, Maintenance of the arc, Losses from plasma, Essential properties of arc, Arc interruption theories.11. Circuit Constant in Relation to Circuit Breaking (Chapter - 10)Introduction, Circuit breaker rating, Circuit constants & circuit conditions Restriking voltage transient Characteristics of re-striking voltage, Interaction between the breaker & circuit, Current chopping, Duties of switchgear.12. Theory & Practice of Conventional Circuit Breaker and Modern Circuit Breakers (Chapter - 11)Automatic switch, Air-break circuit breakers, Oil circuit breakers, Single and multi break Construction, Air-blast circuit breaker, Performance of circuit breakers and system requirements, Modification of circuit breaker duty by shunt resistors, Power factor correction by series resistance, Comparative merits of different types of conventional circuit breakers, Modern trends, Vacuum circuit breakers, Sulphur hexafluoride (SF6) circuit breakers D.C. circuit breaker, auto-reclosing - definitions & features, 3-Phase versus 1-Phase auto-reclosingWe have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with SWITCHGEAR AND PROTECTION. To get started finding SWITCHGEAR AND PROTECTION, you are right to find our website which has a comprehensive collection of manuals listed.
Our library is the biggest of these that have literally hundreds of thousands of different products represented.

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SWITCHGEAR AND PROTECTION

SWITCHGEAR AND PROTECTION

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