KR950004674A - Spot-network distribution system and its operation method - Google Patents

Abstract

In the case of power supply interruption in one of the distribution lines, a spot-network distribution system that is operable without interruption such as instantaneous power supply interruption, load limiting, etc. is disclosed. The spot-network system includes two network units each connected to two different distribution lines, and two power circuit breakers provided in each of the network units, one of the power circuit breakers in each of the network units. It is connected to the same distribution line used as a spare distribution line. By means of the spot-network system, the power receiving line disconnects the power receiving breakers of the network unit in the event of a power interruption in one of the normally used distribution lines detected by each one of the two receiving voltage detectors provided in each network unit. By using it, it switches to a spare distribution line.

Description

Spot-network distribution system and its operation method

Since this is an open matter, no full text was included.

1 is a single-line diagram showing one embodiment of a spot-network distribution system according to the present invention, and FIG. 2 is a diagram showing a single embodiment of a spot-network distribution system according to the present invention.

Claims (10)

A spot-network distribution system for supplying power from a plurality of distribution lines of power supplies to a bus bar of a spot-network distribution system via network units each having a circuit protection vehicle; A plurality of network units connected to the plurality of distribution lines, first and second receiving circuit breakers provided in each of the network units, and connected to other lines of the plurality of distribution lines, respectively, and connected to the first receiving circuit breaker. And switching means for switching a power receiving line from the distribution line connected to the first receiving breaker to the distribution line connected to the second receiving breaker when the power supply interruption occurs in the distribution line. The power supply line of claim 1, further comprising switching means for switching the power receiver line to the power line connected to the first power circuit breaker after switching from the power supply line connected to the second power circuit breaker when the power supply is interrupted. Spot-network power distribution system characterized in that. 3. The power distribution system of claim 1 or 2, wherein the network units are provided in two units, and each of the two network units detects a power distribution state at the distribution line connected to each of the first and second power receiving breakers. A spot-network distribution system comprising two receiving voltage detectors. 4. The spot-network distribution system according to claim 3, wherein the two second receiving breakers in the two network units are connected to the same spare distribution line. 5. The method of claim 4, wherein the power distribution states of the power distribution line detected by the power receiving voltage detectors and information on respective states of opening and closing of the first and second power receiving circuit breakers and the circuit protection circuit breaker are obtained. And providing instructions for leveling the power receiving line from the distribution line that is abnormal when an abnormality occurs in one of the distribution lines to the normally operating distribution line, and switching and using the second power supply when the power supply interruption occurs. A control circuit in the network units that further sends instructions for switching the power supply line to the power distribution breaker and the circuit protection closure after returning power from the power supply line connected to the disconnector to the power distribution line connected to the first receiving breaker. Spot-network distribution system, characterized in that. A spot-network distribution system for supplying power via network units from a plurality of distribution lines of power supplies to a busbar of a spot-network distribution system each having a circuit protection circuit breaker; The plurality of network units connected to the plurality of distribution lines, first and second receiving circuit breakers provided in the respective network units and connected to the other lines of the plurality of distribution lines, respectively; Two faucet voltage detectors for detecting tension wiring states in the distribution line connected to the power receiving circuit breaker and the first receiving circuit breaker And switching means for switching the power receiving line from the distribution line to the distribution line connected to the second receiving circuit breaker. 7. A spot-network distribution system according to claim 6, wherein said power distribution line is switched to said distribution line having a high voltage. 8. The method of claim 7, wherein information about power distribution states in the power distribution line detected by the power receiving voltage detections and respective states of opening and closing of the first and second power receiving circuit breakers and the circuit protection circuit breaker is obtained. Providing instructions for switching the power supply line from the distribution line in which an abnormality occurs to an abnormal occurrence in one of the distribution lines to the normally operating distribution line, and after normal return from the distribution line used and switched in the abnormality occurrence. And a control circuit further sending instructions for switching said power receiver line to said power distribution line to said receiver breakers and said circuit protection circuit breaker. A method of switching the power receiving line from an abnormal distribution line to which a abnormality occurs by using the spot-network distribution system according to claim 3 or 6, in the network unit connected to the abnormal distribution line, Confirming that the power receiving circuit breaker connected to the abnormal distribution line is closed, the voltage of another distribution line is normal, the power receiving circuit breaker connected to the normal distribution line is opened, and the circuit protection circuit breaker is opened; A spot-network distribution system comprising opening the power receiving breaker, closing the power receiving breaker connected to the normal distribution line, and closing the circuit protection breaker of the network unit in which the switching is performed. . 8. A method for switching the power supply line from an unswitched and returned distribution line to a non-switched and returned distribution line in a normal occurrence by using the spot-network distribution system according to claim 3 or 7. In the network unit, the receiving circuit breaker connected to the abnormal distribution line is opened, confirming that the voltage of the distribution line returns to normal, and all other network units other than the network connected to the abnormal distribution line are normally operated. Confirming the presence of the circuit breaker, opening the circuit protection circuit breaker of the network unit in which the switching is performed, locking the opening operation of the circuit protection circuit breaker, Opening the connected channel disconnector, And closing the channel breaker connected to the distribution line which is abnormal and returned, and closing the circuit protection breaker. ※ Note: The disclosure is based on the initial application.