Electric variable-frequency high-voltage cable conveying construction technology

Abstract

The invention relates to an electric variable-frequency high-voltage cable conveying construction technology. The electric variable-frequency high-voltage cable conveying construction technology comprises the steps that first, cable pay-off is prepared, a cable pay-off device is erected according to a preset cable site; second, cable conveying devices are arranged with the interval of 25 m to 30 m; third, cable pay-off pulleys are arranged between the cable conveying devices; fourth, power sources connected with secondary control boxes of the cable conveying devices are then connected with a main control box, the main control box is connected with a frequency conversion cabinet, and the frequency conversion cabinet is connected with a main power source; fifth, the cable is clamped in advance; sixth, the power sources are started; seventh, the cable is conveyed; eighth, the multiple secondary control boxes are adjusted by the frequency conversion cabinet of the cable pay-off device so that cable pay-off can be carried out at different speeds; ninth, laying is completed. According to the electric variable-frequency high-voltage cable conveying construction technology, the cable pay-off quality can be guaranteed, the level of a cable laying technology is improved, the purposes of soft start and speed regulation are achieved through frequency modulation, the construction speed is increased, potential safety hazards caused by cable laying can be reduced, and particularly the speed is increased in the long-distance linear laying process of cables.

Description

Technical field [0001] The invention belongs to the technical field of electric power construction, in particular to an electric variable frequency high-voltage cable transportation construction process. Background technique [0002] With the continuous expansion of electricity demand in urban and urban areas, the scale of urban substations has shown an expanding trend, and the number of outgoing circuits has also been increasing. At the same time, the density of urban buildings is also increasing, making it difficult to solve the problem of overhead transmission lines. Therefore, in cities where the urban power load is growing rapidly, a large number of power transmission schemes that choose high-voltage cables to replace overhead transmission lines have emerged. [0003] In order to protect the internal structure of the high-voltage cable during deployment, traction and deployment are not allowed and must be conveyed. The cable conveyor pre-clamps the cable through the lateral ...

AI Technical Summary

Problems solved by technology

At the bend of the cable, or when entering the shaft or embedded pipe, it is easy to cause internal damage to the cable, and there is a certain safety hazard to the surrounding personnel and equipment.

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