A method for starting the outgoing line of the ring main unit to avoid customer power failure

Abstract

The invention relates to a start-up method of a ring network cabinet for avoiding customer power failure, and relates to the technical field of start-up of a ring network distribution network. Before the ring network cabinet to be started is put into use, insulating plugs are installed on all switches of the ring network cabinet. Then close all the switches of the ring network cabinet, the knife switch and the upper power switch of the ring network cabinet in turn, and perform a closing charging test on all the switches of the ring network cabinet at one time. The method disclosed by the present invention for starting a ring main unit to avoid customer power failure solves the problem that the existing two methods for charging and starting the ring main unit cannot take into account both personal safety and power supply reliability.

Description

technical field [0001] The invention relates to the technical field of start-up of distribution network, in particular to a method for start-up of a ring main unit. Background technique [0002] Before the ring main unit is put into use, because there may be potential safety hazards in a series of links such as manufacturing, transportation, and connection to the circuit, a full-voltage charging test is required before it can be put into operation. There are two methods at this stage during the start-up process, one It is the starting charging mode to ensure personal safety, and the second starting charging method to ensure reliability. These two methods have their own shortcomings, but they cannot take into account the requirements of reliability and safety reliability and operational safety. [0003] In the first starting method, after the spare switch of the ring main unit is connected to the outgoing line, the newly connected outgoing line has passed the insulation test,...

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