Protective Relay Principles

This bestselling book provides an understanding of various power system components and their failure modes as well as the various types of protective relays used to detect and isolate abnormal power system conditions. The author shows readers how to recognize conditions and system configurations where power system protection can be optimized. He also discusses applications and control schemes used to ensure proper protective relay actuation and considers set points for protective relays intended to detect short circuits on distribution lines, transmission lines, transformers, and buses. Additionally, the text examines several schemes used to detect that a circuit breaker has failed to interrupt the flow of a fault current.