Compact high-attitude electric transmission line tower window allowing wires to be specially arranged

Abstract

The invention relates to a compact high-attitude electric transmission line tower window allowing wires to be specially arranged, and belongs to the technical field of high-voltage electrical equipment. A grading ring, an insulator, a divided conductor and the electric transmission wires are arranged inside the tower window, wherein the electric transmission wires are evenly distributed around the divided conductor, the distance Lda between each lower-phase electric transmission wire and the side surface of the tower window is 4.3 m, the horizontal distance Lbc between every two upper-phase electric transmission wires is 7.0 m, and the distance Lba between the upper-phase electric transmission wires and the distance Lca between the lower-phase electric transmission wires are respectively 7.3 m. According to the compact high-attitude electric transmission line tower window, by means of the inner wire arrangement mode, the positive polarity shielding-failure lightning withstand level is higher than that of an original arrangement mode of the compact high-attitude electric transmission line tower window by 6.9%, the negative polarity shielding-failure lightning withstand level is higher than that of the original arrangement mode by 2.8%, and circuit safety operation capacity can be improved under the circumstance that cost is saved as much as possible.

Description

technical field [0001] The invention relates to a high-altitude compact transmission line pole tower window with specially arranged wires, in particular to a high-altitude compact pole tower window internal wire arrangement method that can improve the shielding lightning resistance level of transmission lines, and belongs to high-voltage electrical equipment technology field. Background technique [0002] The analysis of lightning tripping fault characteristics of high-altitude compact transmission lines shows that lightning flashovers of high-altitude compact transmission lines all occur in the shortest air gap channel in the delay tower window, which is different from the flashover of conventional transmission lines along insulator strings. characteristics are quite different. This is due to the special tower window structure and conductor arrangement of high-altitude compact transmission lines, resulting in a relatively weak insulation level at special positions in the g...

AI Technical Summary

Problems solved by technology

This is due to the special tower window structure and wire layout of the high-altitude compact transmission line, resulting in a relatively weak insulation level at the special position of the high-altitude compact tower head gap, which makes its lightning resistance level lower than that of conventional transmission lines under the same conditions. This is also one of the main reasons for lightning tripping of compact lines

In addition, the special tower window structure of high-altitude compact transmission lines also makes it difficult to apply various lightning protection measures suitable for conventional transmission lines, such as tower head lightning rods and line arresters.

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