Operating method for live line replacement of middle phase disconnector by means of insulating rod method

Abstract

The invention relates to an operating method for live line replacement of a disconnector by means of an insulating rod method, and the operating method is widely applied to work for replacing a disconnector in an overhead power distribution line by means of a ground potential method, and belongs to the technical field of the distribution line live line repair site. The operating method comprises following steps: hanging a lead wire shielding hanging board on an edge phase wire and an insulator ball head by means of an insulation operating rod to complete insulating shielding of the edge phaselead wire, and hanging an integrated shielding cover by means of the insulation operating rod to complete insulating shielding of an edge phase tension insulator, a wire clamp and a part of wires; disconnecting lead wires at two sides of a middle phase disconnector, the middle phase disconnector being in a power-off state at the moment, replacing a new disconnector by an operator; and connecting lead wires at two sides of the disconnector to a main wire by means of the insulation operating rod. According to the invention, power outage is not needed during the operation process, a whole set insulating shielding protection appliance is employed to carry out insulating shielding and isolation on an electrified body and a grounding body, the fact that the operator keeps an enough safe distanceaway from an electrified device is guaranteed, and the safety coefficient is high.

Description

Technical field [0001] The invention relates to an operation method for replacing an isolating switch with an insulating rod method with load, which is widely used in the work of replacing an isolating switch with the ground potential method of an overhead distribution line, and belongs to the technical field of on-site maintenance of the distribution line. Background technique [0002] High-voltage isolation switches are widely used in 10KV power distribution lines, mainly used to "isolate power, switch operation, to connect and cut off small circuit currents", without arc extinguishing function. Only open and close the circuit when there is no load current, and only use other equipment to disconnect the circuit before operating. Because of its wide application, the common faults in the operation of the isolating switch are: 1. The load is too heavy and the contact resistance increases and the contact part is overheated; 2. The porcelain insulation is damaged and flashover disch...

AI Technical Summary

Problems solved by technology

The replacement of the isolating switch by the intermediate potential operation method has the following disadvantages: 1. It depends on the terrain conditions, the terrain is rough, and the site is narrow and cannot meet the parking requirements of the vehicles; 2. The cost is high, and the cost of the insulated bucket arm truck and the personnel expenditure are higher than that of the climbing pole operation; 3. 、Compared with the intermediate potential operation, the ground potential operation is mainly completed through the operating lever, which ensures the distance between the personnel and the electrified body, and has a high safety factor

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