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10 kV distribution line insulation tower head

A technology for power distribution lines and insulation towers, applied in the direction of circuits, insulators, electrical components, etc., can solve problems such as phase-to-ground short circuit, lightning flashover, phase-to-phase flashover, etc., to prevent pollution flashover accidents, prevent lightning strike disconnection accidents, The effect of meeting the insulation level

Active Publication Date: 2008-07-23
STATE GRID ELECTRIC POWER RES INST
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Problems solved by technology

[0004] The purpose of the present invention is to provide a 10kV distribution line insulation tower head, which can solve the problems of lightning flashover, pollution flashover, phase-to-ground short circuit and phase-to-phase flashover that are easy to occur in the existing 10kV distribution line, and can greatly improve the power distribution line. The insulation level can basically completely eliminate the occurrence of pollution flashover accidents, and it is conducive to the development of live work

Method used

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  • 10 kV distribution line insulation tower head
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Embodiment 2

[0021] The pin insulators 1, 2, 3 are not installed, and the wires are directly installed on the hydrophobic high-strength insulating rods 11, 12 with connecting fittings, which also have a large enough relative ground and interphase insulation spacing, which can ensure the height of the insulation level.

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Abstract

A 10kV power distribution circuit insulation tower head is disclosed, which is characterized in that: adopting hydrophobic high-strength insulation bar to be assembled with needle-typed insulator by gold tool and form an insulation tower head entity, or adopting hydrophobic high-strength insulation bar to be assembled with gold tool directly and form an insulation tower head. By using the invention, the insulation level of the power distribution circuit can be greatly improved, the thunder discharge air gap can be obviously enlarged, the lightning stroke and line break accidents can be effectively prevented and the climbing distance can be expanded, further, the structure type is easy to improve self-cleaning ability and the occurrence of pollution flashover can be basically and completely precluded, which is beneficial in charged operation, simple in operation process and improves the operation security.

Description

technical field [0001] The invention belongs to the field of high-voltage transmission lines, and relates to a 10kV power distribution line insulation tower head (a support for overhead wires). Background technique [0002] Compared with the insulation level of 110kV and above transmission lines, the creepage distance of insulators of 10kV distribution lines is small, and the air gap L between the charged body (conductor) and the grounding body (iron crossarm) 1 The (climbing distance) is small, generally 20cm, once a direct lightning strike occurs, flashover is very easy to occur. In addition, some urban power grids are located in areas where the atmospheric environment is poor, and the insulators are heavily polluted. Pollution flashover is prone to occur in high humidity or foggy climates. In addition, when tree branches, streamers, kites, food bags and other sundries short-circuit the pin insulator, it is also easy to cause a phase-to-ground short circuit, and then dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/00H01B17/42H01B17/00
Inventor 胡毅王力农郑传广邵瑰玮刘凯徐莹刘庭胡建勋肖宾
Owner STATE GRID ELECTRIC POWER RES INST
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