eBook - ePub

Introduction to Power System Protection

Name: Introduction to Power System Protection
ISBN: 9783985103119

Dr. Hidaia Mahmood Alassouli,

145 pages
English
ePUB (mobile friendly)
Available on iOS & Android

eBook - ePub

Introduction to Power System Protection

Dr. Hidaia Mahmood Alassouli,

About this book

Power system protection systems have three basic components: Instrument transformers, Relays, Circuit breakersThe function of the CT is to reproduce in its secondary winding a current I' that is proportional to the primary current I. The CT converts primary currents in the kiloamp range to secondary currents in the 0–5 ampere range for convenience of measurement.The function of the relay is to discriminate between normal operation and fault conditions. The OC relay in Figure 2 has an operating coil, which is connected to the CT secondary winding, and a set of contacts. When |I'| exceeds a specified ''pickup'' value, the operating coil causes the normally open contacts to close. When the relay contacts close, the trip coil of the circuit breaker is energized, which then causes the circuit breaker to open.System-protection components have the following design criteria: • Reliability: Operate dependably when fault conditions occur, even after remaining idle for months or years. Failure to do so may result in costly damages.• Selectivity: Avoid unnecessary, false trips.• Speed: Operate rapidly to minimize fault duration and equipment damage. Any intentional time delays should be precise.• Economy: Provide maximum protection at minimum cost.• Simplicity: Minimize protection equipment and circuitry.Since it is impossible to satisfy all these criteria simultaneously, compromises must be made in system protection.The book consists from the following sections: 1. Chapter 1: Power System Faults: 2. Chapter 2: Instrument Transformers.3. Chapter 3: Overcurrent and Earth Fault Protection Relays.4. Chapter 4: Radial System Protection.5. Chapter 5: Zones of Protection.6. Chapter 6: Differential Relays.7. Chapter 7: Distance Relays.8. Chapter 8: Transformer Protection.9. Chapter 9: Generator Protection.10. Chapter 10: Busbar Protection.11. Chapter 11: Circuit Breakers.12. Chapter 12: Fuses.13. Chapter 13: References.

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Yes, you can access Introduction to Power System Protection by Dr. Hidaia Mahmood Alassouli in PDF and/or ePUB format, as well as other popular books in Technology & Engineering & Electrical Engineering & Telecommunications. We have over one million books available in our catalogue for you to explore.