Pre-twisted composite phase-to-phase spacer

Abstract

The invention discloses a pre-twisted composite phase-to-phase spacer which comprises a composite phase-to-phase spacer body, a left pre-twisted spacer and a right pre-twisted spacer. The positions between the two ends of the composite phase-to-phase spacer body and the rear ends of the left pre-twisted spacer and the right pre-twisted spacer are respectively provided with a buffer and an adjusting plate in sequence. The composite phase-to-phase spacer body comprises a core rod, an umbrella skirt and a grading ring, and the umbrella skirt and the grading ring are both fixedly mounted on the core rod. The pre-twisted composite phase-to-phase spacer is reasonable in structure, and flashover caused by divided conductor galloping, conductor deicing jumping and conductor drooping is restrained, so that abrasion or damage of divided conductors, hardware fittings and iron towers is avoided or reduced. The composite phase-to-phase spacer achieves the effect of phase-to-phase spacing insulation and the effect of phase-to-phase electric isolation, also achieves the effect of phase-to-phase mechanical load transferring, and is suitable for high-tension transmission lines and particularly suitable for dirty areas. Flashover accidents can be effectively prevented, manual cleaning is of no need, zero value maintenance can be avoided, and the line phase-to-phase short circuit problem caused by conductor galloping can be effectively solved.

Description

Technical field [0001] The invention relates to the field of power devices, in particular to a pre-twisted composite interphase spacer rod. Background technique [0002] In the overhead transmission line, due to the eccentric icing of the conductors and the formation of a certain angle between the wind direction and the line, the low-frequency vibration caused by the lift force generated by the horizontal wind on the conductors with asymmetric cross-sections is easy to use under the action of stable horizontal wind speeds. Vertical lift and torsion around the phase line axis appear on the wire, which stimulates the wire to produce an elliptical trajectory dominated by vertical force. The movement will cause the wire to wear out and damage a large number of hardware, protective wire and iron tower. Summary of the invention [0003] The purpose of the present invention is to provide a pre-twisted composite interphase spacer to suppress flashover caused by split wire galloping, w...

AI Technical Summary

Problems solved by technology

[0002] In overhead transmission lines, due to the eccentric icing of the wires, and the wind direction forms a certain angle with the line, the low-frequency vibration caused by the lift force generated by the horizontal wind on the asymmetric cross-section wire, under the action of laterally stable wind speed, it is easy to use The vertical lift force and the twisting of the phase axis on the conductor excite the conductor to produce a galloping of an approximate elliptical trajectory dominated by vertical force. The galloping will cause the conductor to be broken and a large number of fittings, guard bars and iron towers to be damaged.

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