Compound post insulator for preventing broken wire of aerial insulated conductor caused by lightning strike

Abstract

The invention discloses a composite post insulator for preventing overhead insulated wires from being broken by lightning, which solves the problem of wire breaking caused by lightning on insulated overhead wires. It mainly includes: high-voltage electrodes (4, 5), which are closely electrically connected to the metal conductor inside the insulated wire by stripping the insulation layer of the insulated wire (2), and are used to locate the lightning flashover path and fix the burning point of the power frequency arc; An insulating support assembly (3, 7, 6), one end of which is fixed to the high-voltage electrode, and the other end is grounded; and an insulating protective cover (1), which is fixed on the outside of the high-voltage electrode for insulation and arc limitation, and the inner cavity of the insulating protective cover and the high-voltage electrode There is a gap between them. It has the characteristics of short stripping length of insulated wires, insulating protective cover on the exposed part, protection against lightning breakage, good anti-fouling performance, simple construction, and filling the gaps in domestic technology.

Description

technical field [0001] The invention relates to an overhead power distribution line in a power system, in particular to a composite post insulator for preventing overhead insulated wires from being broken by lightning, which is especially suitable for use on 10kV overhead insulated wires. Background technique [0002] In order to reduce the failure of overhead distribution lines caused by external factors such as trees, birds, and snow, and improve the reliability of power supply, developed countries have gradually adopted overhead insulated wires since the late 1960s. Since the 1980s, my country has implemented a pilot project of insulation transformation for urban overhead distribution networks. In the 1990s, the promotion and application began. [0003] Insulated wires do solve the corridor and safety problems that bare wires cannot solve. Compared with cables, they have obvious advantages of less investment and faster construction. However, the problem of lightning dis...

AI Technical Summary

Problems solved by technology

[0007] 1. For the existing anti-arc clips, when in use, the insulated wire needs to be stripped for a long length, and the exposed part is relatively large, which will have a certain impact on the sealing and insulation of the wire

[0008] 2. The use of lightning arresters, although the protection effect is good, but the construction and installation are complicated and the investment is large

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