By the non power failure change power source car the distribution line bidirectional non power failure change manner

摘要

PROBLEM TO BE SOLVED: To enable execution of a bidirectional uninterruptible power supply relief of a load without executing a hot-line connection switchover of connecting cables in the course of an operation for a distribution line, in a bidirectional uninterruptible power supply switching method in regard to a distribution system enabling execution of reverse transmission. ;SOLUTION: An output of a generator 11 of an uninterruptible power supply switching car 10 is branched into two main circuits 14 and 15, while, breakers CB₁ and CB₂ are provided for the main circuits 14 and 15 respectively, and connecting cables are connected to the main circuits 14 and 15. Besides, a noncontact current sensor 3 is provided temporarily for a distribution line and a detected current signal from this noncontact current sensor is taken in a measuring-controlling device 13. In either case of a forward or reverse current, the breakers CB₁ and CB₂ of the main circuits connected to the load side to be subjected to an uninterrupted power supply relief are made synchronously and thereby a load is switched to the generator 11 in the condition of an uninterruptible power supply.;COPYRIGHT: (C)1997,JPO