RMU uninterrupted power supply load transfer method

Abstract

The present invention discloses an RMU uninterrupted power supply load transfer method which comprises the steps of (1) taking secondary side wiring holes outside an RMU as phase checking holes which are corresponding to an wire inlet control switch and a normally open contact switch in an RMU and are used for measuring a phase sequence, (2) carrying out pairwise phase checking on each phase checking hole corresponding to the wire inlet control switch and each phase checking hole corresponding to the normally open contact switch, (3) carrying out same power supply phase checking on the phase checking hole corresponding to the wire inlet control switch and the phase checking hole corresponding to the normally open contact switch, and then carrying out exclusive power supply phase checking, (4) when the above judgment is correct, judging that the second wire connection of the wire inlet control switch and the normally open contact switch is correct and the phase sequence correspondence of two side lines of the normally open contact switch is correct, at that time the normally open contact switch is connected, then a power station of a corresponding side is disconnected, and the RMU interconnection line uninterrupted power supply (closed ring) load transfer is realized. The method has the advantages of easy implementation, simple and safe operation and the great improvement of the power supply reliability of an urban distribution network.

Description

technical field [0001] The invention belongs to the field of automatic operation of power grids, and in particular relates to a load transfer method of a ring network cabinet without power failure. Background technique [0002] The power distribution ring network refers to two or more power distribution lines that form a "hand in hand" line. Control switches are set for each line in sections, and contact switches are set at the connection points of the lines to realize the interconnection of branch and trunk lines. When the line If a certain part of the system fails, the faulty part can be isolated in time, and the power supply can be normally supplied to the load from the switches on both sides, so as to reduce the loss of power failure. With the rapid development of social economy, the urban distribution network structure has changed greatly, and cable lines have gradually replaced overhead lines and occupied a major position. The existing urban power distribution ring ne...

AI Technical Summary

Problems solved by technology

However, the implementation and coordination of this technology is difficult, and the requirements for comprehensive collaboration capabilities are very high

Every time before implementing this technical operation, it is necessary to dispatch large-scale emergency bypass cable cars, live work vehicles and other electric construction vehicles. The live equipment around the operation point needs to be surrounded by a protective net. The implementation site requires the cooperation of about 30 staff, which consumes a lot of money. more time and energy

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