Coil out structure in high voltage in oil immersed type distribution transformer

Abstract

A high-voltage outlet structure of an oil-immersed distribution transformer, including a tank cover, an oil tank, a high-voltage cable, a high-voltage bushing seat, and an elbow-shaped cable head plugged into the high-voltage bushing seat, wherein: the high-voltage bushing seat is sealed and installed On the tank cover or on the side wall of the fuel tank, the tail conductive part of the elbow cable head is connected to the high-voltage cable, and the connection method can be cold pressure welding. The present invention uses the high-voltage bushing seat and the elbow-shaped cable head to replace the porcelain bushing in the prior art, so that there is no exposed charged body on the high-voltage side of the transformer, and it can effectively prevent the damage caused by small animals climbing to the high-voltage terminal. The accident, improve the anti-fouling function of the transformer. At the same time, the elbow-shaped cable head and high-voltage bushing seat can be made of polymer insulating material, which has certain toughness, and is not easy to be damaged during the transportation and operation of the transformer, ensuring safety performance. In addition, after adopting the present invention, the distance between the three-phase high-voltage bushing seats can also be reduced.

Description

technical field [0001] The invention relates to an oil-immersed distribution transformer, in particular to a high-voltage outlet structure of an oil-immersed distribution transformer with a high-voltage rated voltage of 35kV or below. technical background [0002] At present, the high-voltage side wires of oil-immersed distribution transformers are usually led from the inside of the oil tank to the tank cover or the outside of the oil tank. The pole is connected to the external high-voltage grid. In this way, there is an exposed charged body on the high-voltage side of the transformer at the connecting terminal of the porcelain bushing. When a small animal climbs to the high-voltage connecting terminal (ie: exposed charged body), an accident will occur. In addition, the porcelain bushing is installed on the transformer, which is easy to crack or be crushed by foreign objects during the transportation and operation of the transformer, causing equipment damage and casualties....

AI Technical Summary

Problems solved by technology

In this way, there is an exposed charged body on the high-voltage side of the transformer at the terminal of the porcelain bushing. When a small animal climbs to the high-voltage terminal (ie: exposed charged body), an accident will occur.

In addition, the porcelain bushing is installed on the transformer, which is easy to crack or be crushed by foreign objects during the transportation and operation of the transformer, causing equipment damage and casualties

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