Penetration type lightning protection metal fittings for preventing breaking of suspended insulated guide wire by lighting strike

Abstract

The invention relates to a penetration lightning-proof hardware against the break of elevated insulator conductor in the electric power distribution network field. The hardware is directly arranged on top of an insulator, and its top cap is provided with a penetrated electrode contacting the conductor in the insulated conductor electrically after penetrating into the insulation layer of the insulated conductor, thus leading the electricity to the top cap and bottom tray to constitute the exposed upper metal electrode of the insulator. Under over-voltage effect of thunders, the penetrated blade contacting the conductor closely leads the over-voltage to the upper metal electrode to make the over-voltage between the upper metal electrode and the lower metal electrode so as to form the surface penetration of the insulator. Hence, the insulation conductor becomes similar exposed conductor structure, thus being difficult to be burned by power frequency current and ensuring the connection of elevated insulation conductor in the process of thunder. The hardware is free of maintenance in the process of operation, and particularly applicable to 10kV elevated insulation conductor.

Description

technical field [0001] The invention relates to the field of electric power distribution network, which is used for overhead distribution lines of electric power system, and is mainly used for preventing lightning breakage of overhead insulated wires, and is especially suitable for use on 10kV overhead insulated wires. technical background [0002] In order to reduce the faults of overhead distribution lines caused by external factors such as trees, birds, and snow accumulation, and improve the reliability of power supply, overhead insulated wires have been widely used at home and abroad in recent decades. Insulated wires do solve the corridor and safety problems that bare wires cannot solve. Compared with cables, it has the advantages of low investment and fast construction, but its lightning disconnection problem is very prominent. It has become a problem in the distribution network system. important issues that urgently need to be addressed. [0003] Economically develop...

AI Technical Summary

Problems solved by technology

[0012] In summary, although the above methods can effectively prevent wire breakage due to lightning strikes, there are still some problems as follows: some of the current anti-breakage fittings, before use, the insulated wires need to be stripped for a long length, and the exposed parts are relatively large. Large, this will have a certain impact on the sealing and insulation of the wires, and will seriously affect the mechanical strength and service life of the wires; some installations are more complicated and not easy to use in practice

The use of lightning arresters and overvoltage protectors, although the protection effect is good, but there are mainly problems such as difficult operation and maintenance.

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