Method of entering strong electric field along ultrahigh-voltage tension insulator string and pedal device

Abstract

The invention relates to a method of entering a strong electric field along an ultrahigh-voltage tension insulator string and a pedal device used thereby. Equal-potential electrician's feet are each equipped with a pedal device, a clamping mechanism of the pedal devices clamps an insulator steel cap, the electrician enters a strong electric field along a tension insulator string in an upright manner, and the feet move forward alternately along the tension insulator string to reach a work position. The pedal device comprises a clamping mechanism, a mechanism for supporting and fixing foot soles, and a mechanism for pressing or lifting the feet to make the clamping mechanism clamp or release an insulator steel cap. Workers can almost enter an electric field in an upright manner, so that the physical power consumption of workers is reduced. Compared with a method of entering a strong electric field in a sitting or squatting manner, workers feel more comfortable and convenient, the labor intensity is reduced greatly, and workers have enough physical power to complete follow-up charged operation work.

Description

technical field [0001] The invention belongs to the field of ultra-high voltage power transmission and transformation, and in particular relates to a method for entering a strong electric field along an ultra-high voltage tension insulator string and the foot-operated device used. Background technique [0002] Freestyle (semi-squatting) method of entering strong electric field along the insulator string is often used in 750 kV and below ultra-high voltage transmission line live work, the key steps are as follows: equipotential electrician adopts freestyle (semi-squatting) method to enter strong electric field , that is, the equipotential electrician squats on a string of tension insulators and holds another string of tension insulators with both hands. When an equipotential electrician moves along a string of tension insulators, step on an adjacent insulator with two feet, hold the skirt of the corresponding insulator with both hands at the same time, squat halfway on the in...

AI Technical Summary

Problems solved by technology

[0004] 1) Due to the high voltage level of the ±800 kV UHVDC transmission line, the distance between the tension insulator strings is relatively long, with a distance of about 1 meter. Far away, the hands must be kept straight all the time, and the operator cannot maintain a half-squat state, but moves in a half-push-up state;

[0005] 2) The tension insulator string of the ±800 kV UHV DC transmission line is about 20 meters long, and the number of insulators reaches 60 pieces. One equipotential electrical work is equivalent to doing half push-ups 120 times. The labor intensity is relatively high, which will consume too much work The physical strength of the personnel will affect the follow-up live work work or even fail to complete the work

[0006] In fact, in the current ±800 kV DC UHV transmission lines, the free (semi-squatting) method of entering a strong electric field along the insulator string is still commonly used, and there is no better alternative

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