Solid-sealed insulating lightning protection bushing for distribution transformer

Abstract

The invention relates to a fixed, sealed and insulated lightning-protection sleeve for a distribution transformer, and belongs to the technical field of high-voltage lightning protection. The fixed, sealed and insulated lightning-protection sleeve for the distribution transformer is characterized by comprising a support part; an electric conductor is arranged in the support part; two ends of the electric conductor are each provided with a connection bolt, so that the electric conductor is connected between a distribution transformer coil and an outgoing line loop in series; a lightning protection component is arranged in the outer ring of the support part and at one side of the outgoing line end of the distribution transformer; the lightning protection component is connected between the connection bolt at the outgoing line side of a conducting rod and a grounding end in parallel; an insulating layer used for isolating the high-voltage potential of the electric conductor is also arranged in the outer ring of the support part; and simultaneously, the insulating layer wraps the lightning protection component. By means of the fixed, sealed and insulated lightning-protection sleeve for the distribution transformer, insulating of a conventional transformer sleeve and effects of a winding outgoing line sleeve are realized; simultaneously, the lightning protection effect is realized by setting a metallic oxide lightning protection component; and thus, damage of the distribution transformer due to the fact that atmospheric over-voltage intrudes the interior of the distribution transformer when lightning strokes can be avoided.

Description

technical field [0001] The utility model relates to a solid-sealed insulating lightning protection bushing for distribution transformers, which belongs to the technical field of high voltage lightning protection. Background technique [0002] In recent years, due to the rapid development of local economy and urban construction, social electricity consumption has increased significantly, and the number of distribution transformers in operation and newly put into operation has increased significantly. As the requirements for power supply reliability are getting higher and higher, the operation reliability of distribution transformers has been paid more and more attention by the industry. Lightning strikes cause distribution transformer insulation accidents from time to time, which seriously affects the reliability of power supply. Necessary lightning protection measures should be taken. It is imminent to reduce lightning damage accidents. [0003] The National Development and...

AI Technical Summary

Problems solved by technology

In this case, distribution transformers will undergo a large number of renovations and technological innovations. As an indispensable and important accessory, the demand for bushings will further increase. However, so far, distribution transformers and arresters have been installed separately and independently. , which not only increases the application of materials and requires high construction technology, but also increases the residual voltage of lightning impulse

The current conventional measures are to limit the lightning overvoltage by reducing the installation distance between the arrester and the distribution transformer as much as possible. Accidents of power supply interruption caused by lightning damage to the distribution transformer occur from time to time. It is urgent to take technical measures to improve the lightning protection of the distribution transformer. ability

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