METHOD OF CONNECTING BUS OF POWER SYSTEM

摘要

PURPOSE:To prevent the power stoppage of all circuits by quickly and easily removing the internal accident of two bus liaison breakers themselves connected in series and the internal accident between these breakers. CONSTITUTION:This system has a bus liaison circuit which couples two systems of buses 15 and 16, and two bus liaison breakers Lxc and Lyc are connected in series to this bus liaison circuit. Internal fault detecting means CT1 and CT2 capable of selectively detecting the internal accident of the two bus liaison breakers Lxc and Lyc or the internal accident between the bus liaison breakers Lxc and Lyc and two bus protective relays 21 and 22 are provided, corresponding to two systems of buses 15 and 16. In the case that this detects the internal fault of either one hand of the two bus liaison breakers Lxc and Lyc or that between the bus liaison breakers Lxc and Lyc, this operates only one hand of the two bus protective relays 21 and 22 at high speed, and breaks both the two bus liaison breakers Lxc and Lyc.