Operation method for replacing strain insulator of 35kV overhead distribution line in live state

Abstract

The invention provides an operation method for replacing a strain insulator of a 35kV overhead distribution line in a live state. The method is an intermediate-potential insulating glove operation method in which a strain insulator is replaced by use of an insulating bucket arm truck, and the method is jointly implemented by a person in charge of operation, an electrician on ground and an in-bucket operation electrician. The method mainly comprises the following steps: stop of maintenance line reclosing is applied; the operation workers detect tools; the in-bucket operator wears insulated equipment, enters the bucket and loads the tools in the bucket; the in-bucket electrician enters an electric field through an insulating bucket arm truck to do insulating shield; auxiliary tools for operation are mounted; a tension insulator is replaced; the shield is removed; the operators leave the electric field; and maintenance line reclosing is recovered. The operation method of the invention saves human resources, is convenient and fast in emergence maintenance, high in efficiency, and flexible and convenient in field switching, and obviously improves guarantee on personal safety of the operators.

Description

technical field [0001] The invention relates to an operation method for live maintenance of a high-voltage distribution line in a power system, in particular to an operation method for live replacement of a tension insulator on a 35kV overhead distribution line. Background technique [0002] 35kV lines are an important part of my country's power distribution lines, and are widely used in some areas of my country with large loads and large power supply radii. Compared with the 10kV distribution line, the 35kV line has the advantages of large transmission capacity and small line loss, but the 35kV line has many equipment, low insulation level, and directly faces users, etc., and is prone to failure under the influence of atmospheric overvoltage, pollution or other external factors , Once the distribution line fails, it will directly affect the normal production and life of users. The structure of the 35kV line is more similar to that of the 110kV and above transmission lines ...

AI Technical Summary

Problems solved by technology

Compared with the 10kV distribution line, the 35kV line has the advantages of large transmission capacity and small line loss, but the 35kV line has many equipment, low insulation level, and directly faces users, etc., and is prone to failure under the influence of atmospheric overvoltage, pollution or other external factors , once the distribution line fails, it will directly affect the normal production and life of the user

For example, the publication number is CN101640391A, and the Chinese patent document titled "Working method for replacing insulators with live operation on 35kV distribution lines" discloses a working method for replacing insulators with live operation. Linear pin-type (or porcelain cross-arm) insulator replacement operations for electric lines, but this method has at least the following shortcomings: First, it requires at least 7 staff members of 4 categories to cooperate with the operation, and more human resources are used; It is time-consuming and labor-intensive to build an insulating platform for operation, and it is inconvenient to change the next insulator, and it needs to be re-built, which seriously affects the speed and efficiency of emergency repairs. Unsafe factors; Fourth, during the operation process, tools need to be installed with auxiliary tools and passed one by one by manpower through the cooperation of the ground and the operators on the pole. The operation efficiency is low and unsafe

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