Distribution transformer based on glass fiber tape winding

Abstract

The invention relates to a distribution transformer based on glass fiber tape winding. The distribution transformer comprises a housing, a lead sleeve, an iron core, an iron core fastener, a high-voltage winding and a low-voltage winding, wherein multiple insulating strips are arranged between the high-voltage winding and the low-voltage winding, multiple bakelite rods are evenly arranged on the outer surface of the high-voltage winding, the bakelite rods are parallel to the central axis of the iron core, and the bakelite rods and the high-voltage winding are fixed together by winding a glass fiber tape. The surrounding of the connecting position of the iron core and the iron core fastener is tightly wound with a glass fiber tape. By arranging the glass fiber tape outside the high-voltage winding, the phenomenon that the performance of the distribution transformer is affected by winding expansion or contraction can be effectively avoided. By arranging the bakelite rods, deformation of the winding in the horizontal direction can be effectively inhibited, and by arranging the glass fiber tape at the connecting position of the iron core and the iron core fastener, rotary displacement of the iron core can be effectively avoided. The operating stability of the distribution transformer can be greatly improved, and the distribution transformer is simple in structure, high in practicability and convenient to popularize and use.

Description

technical field [0001] The invention relates to the technical field of transformer preparation technology, in particular to a distribution transformer based on glass fiber tape winding. Background technique [0002] The distribution transformer is a static electrical device that transmits AC power by transforming AC voltage and current according to the law of electromagnetic induction in the power distribution system. From the perspective of transformer capacity and voltage level, distribution transformers usually refer to power transformers that operate in the distribution network with a voltage level of 10-35kV, a capacity of 6300kVA and below, a secondary voltage of 400V, and directly supply power to end users. . Distribution transformers are widely used in industrial and mining enterprises, urban streets, residential areas and remote villages. Due to the wide range of applications of distribution transformers, in the field of transformer preparation technology, the str...

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Problems solved by technology

At the same time, since the distribution transformer will vibrate during the working process, the long-term vibration will cause the iron core to undergo rotational displacement. Only the setting of iron core fasteners cannot avoid the rotational displacement of the iron core.

The deformation of the distribution transformer winding and the rotational displacement of the iron core will change the internal insulation distance of the distribution transformer and damage the insulator, resulting in partial discharge of the distribution transformer and a decline in mechanical performance, which will bring serious damage to the entire distribution system. harm

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