Insulation repair method for 10 kV high-voltage cable

Abstract

The invention belongs to the technical field of cable repair, and specifically relates to an insulation repair method for a 10 kV high-voltage cable. According to the method, when the 10 kV three-core cable has a phase core breakdown fault, according to the damaged conditions of insulation and a wire core, three wire core bodies can be maintained without sawing three conductor wire cores of the cable if the conductor wire cores of the cable after breakdown are not obviously damaged, and the 10 kV high-voltage cable "main insulation repair" manufacturing process is employed at a fault wire core insulation breakdown position for rapid repair processing. According to the method, cable wire core insulation with fault breakdown can be rapidly, simply, and effectively repaired, and recovery of power transmission is rapidly achieved.

Description

technical field [0001] The invention belongs to the technical field of cable repair, and in particular relates to a 10kV high-voltage cable insulation repair method. Background technique [0002] Throughout the development history of cables, the voltage level has risen from 10kV to 110kV and above. No matter how it changes, its construction principle is the same. The manufacturing process of cable ends and intermediate ends follows the principle of layer-by-layer restoration. At present, the national standards, industry standards and foreign standards have not yet involved the breakdown of 10kV cross-linked cables. It is necessary to restore power transmission as soon as possible, and how to quickly deal with the production standards of the "breakdown point" of faulty cables. When the high-voltage cable terminal, intermediate head, and body fail, it is difficult to repair due to the influence of the environment, space, position, and margin. Traditional production process: W...

AI Technical Summary

Problems solved by technology

When the high-voltage cable terminal, intermediate head, and body fail, it is difficult to repair due to the influence of the environment, space, position, and margin

Traditional production process: When a three-core cable (A, B, C three-phase) fails, if one phase insulation is damaged, all three-phase cable cores must be sawn off, and the connecting pipe is used to re-join the production process. It has the following disadvantages: 1. The production process is complicated, and it takes a long time to restore power transmission; 2. If the joint crimping is not handled well at the connection, it is easy to generate heat and malfunction; 3. The insulation strength is not as good as the insulation of the cable body; 4. The original electric field of the cable is changed. distribution, generating a tangential electric field that is extremely unfavorable to insulation, and is prone to insulation breakdown; 5. The entire manufacturing process is time-consuming, laborious, labor-intensive, and material-intensive

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