Analysis of the application of high-speed reclosing breakers to transmission systems

IN recent years many new or improved kinds of apparatus have been made available for increasing the reliability of transmission circuits. These include high-speed relays, high interrupting speed breakers, ground-fault neutralizers, protector tubes, and high-speed reclosing breakers. Though they may be used in combination, ground-fault neutralizers, protector tubes, and high-speed reclosing breakers offer alternate methods for reducing the outages on the transmission circuit. The reliable loading of a transmission circuit may also be increased by introducing intermediate switching stations and by increasing the interrupting speeds of existing breakers.