An Outlet Structure of Electrostatic Ring at the End of Transformer Winding

Abstract

The invention relates to an outgoing line structure of an electrostatic ring at the end part of a transformer winding. The outgoing line structure of the electrostatic ring at the end part of the transformer winding comprises a transformer winding body, wherein the transformer winding body comprises a line turn and the electrostatic ring; a plurality of insulating cushion blocks are uniformly arranged on the electrostatic ring along the circumferential direction; the electrostatic ring is provided with an electrostatic ring outgoing line at the position at the right side of one insulating cushion block; the line turn is provided with a line turn welding point at the position at the left side of the same insulating cushion block; and an insulating cushion block gap for arranging an electrostatic ring outgoing line in a penetrating manner is arranged in the bottom part of the insulation cushion block between the electrostatic ring outgoing line and the line turn welding point. According to the outgoing line structure of the electrostatic ring at the end part of the transformer winding, the position of the electrostatic ring outgoing line and the welded position are completely staggered, so that welding of the outgoing line and the line turn is facilitated; the insulation wrapping operability of the outgoing line and the welded part is improved; the potential safety hazard is eliminated; the quality of a product is improved; and reliable operation of the product is ensured.

Description

technical field [0001] The invention relates to the field of transformer manufacturing, in particular to an outlet structure of an electrostatic ring at the end of a transformer winding. Background technique [0002] Power transformer insulation is an important part of power transformers, especially ultra-high voltage power transformers. It not only has decisive significance for the single limit capacity and operational reliability of transformers, but also has an important impact on the economic indicators of transformers. Transformer end insulation is an important part of the main insulation. Because the electric field there is extremely uneven, in order to improve the impact voltage distribution between the end of the wire turn and the adjacent line segments, the high voltage winding can also make the winding The uniform electric field at the end adopts the method of adding an electrostatic ring at the end to meet the requirements. In addition to improving the end electr...

AI Technical Summary

Problems solved by technology

But due to figure 2 The welding position of the outgoing wire and the turn of the electrostatic ring shown is in the uneven electric field at the end, and the gap between the two is very small at the same position, which brings difficulties to the welding process and insulation wrapping. Make the product a safety hazard

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