Che-shaped suspension string for preventing windage yaw

Abstract

The invention discloses a che-shaped suspension string for preventing windage yaw. The suspension string sequentially comprises an overhanging yoke plate, an insulator string group, a yoke plate, a pillar insulator string, an I-type insulator string and an iron tower cross arm from bottom to top, the suspension yoke plate is connected with the insulator string group, the insulator string group isconnected with the yoke plate, the yoke plate is respectively connected with the pillar insulator string and the I-shaped insulator string, an acute included angle is formed between the lower end of the pillar insulator string and the lower end of the I-shaped insulator string, the pillar insulator string and the I-shaped insulator string are both connected with an iron tower cross arm, and the I-shaped insulator string is vertically connected with the iron tower cross arm, wherein the insulator string group comprises two parallel insulator strings. The structure can ensure that the air gap between the wire and the iron tower does not exceed the limit under severe weather conditions such as sand storm, thereby being suitable for the side phase of the power transmission line straight line iron tower in a gale area, preventing the overhead power transmission line from windage yaw flashover, avoiding large-area power failure accidents, and improving the power supply reliability of a powergrid.

Description

technical field [0001] The invention relates to a suspension insulator string of a straight tower of an overhead transmission line, in particular to a structure for preventing wind deflection flashover accidents of an overhead transmission line in areas with strong winds, especially in areas prone to sandstorms. Background technique [0002] More and more overhead transmission lines pass through areas with harsh conditions. They are not only attacked by heavy rain and lightning, but also affected by strong winds. The insulator strings swing sharply, which greatly increases the probability of wind-bias flashover. Once a wind flashover occurs, the recombination efficiency of the transmission network is low. According to relevant literature, it is about 25%. economic loss. Moreover, after a wind deflection accident, it is difficult to accurately and quickly determine the location of the fault, which also brings great trouble to the operation and maintenance of high-voltage tra...

AI Technical Summary

Problems solved by technology

[0002] More and more overhead transmission lines pass through areas with harsh conditions. They are not only attacked by rainstorms and lightning, but also affected by strong winds. The insulator strings swing sharply, which greatly increases the probability of wind-bias flashovers.

Once a wind flashover occurs, the recombination efficiency of the transmission network is low. According to relevant literature, it is about 25%. economic loss

Moreover, after a wind deflection accident, it is difficult to accurately and quickly determine the location of the fault, which also brings great trouble to the operation and maintenance of high-voltage transmission lines.

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