Arrangement structure and winding method of transformer with delta-connected third winding

Abstract

The invention relates to a third winding delta-connected transformer arrangement structure and its winding method, including first to third iron core columns, characterized in that it has U-shaped windings, single-layer cylindrical windings, low-voltage windings, and high-voltage windings And the high-voltage voltage regulating winding, wherein, the U-shaped winding and the single-layer cylindrical winding form the third winding of the first and third iron core columns, and the arrangement structure of the windings of the first iron core column and the third iron core column is: U U-shaped winding-single-layer cylindrical winding-low-voltage winding-high-voltage winding-high-voltage voltage regulating winding, and the upper outlet of the U-shaped winding is connected with the upper outlet of the single-layer cylindrical winding. In the present invention, the third winding is composed of a U-shaped winding and a single-layer cylindrical winding, which reduces the space of the third winding, reduces the weight of each winding, greatly reduces the product design cost to a certain extent, and guarantees product performance. On the basis of improving the efficiency of the enterprise.

Description

technical field [0001] The invention relates to a transformer manufacturing technology, in particular to a third winding delta-connected transformer arrangement structure and a winding method thereof. Background technique [0002] At present, the three-phase transformer products in power equipment, as far as China is concerned, the output voltage of the third winding delta connection is usually fixed, and the third winding leads are also three wires; in addition, very few products also have a third winding Two voltages are drawn out, but they are all drawn out with symmetrical three-phase voltages, and a total of six lines are drawn out. The above design concepts are more conventional in the current design of transformer products. [0003] In principle, two kinds of voltages can be obtained by conventionally leading symmetrical three-phase voltages, but the lead-out methods of them are different. In the three phases, there are taps at one-third of the lead-out position of e...

AI Technical Summary

Problems solved by technology

[0003] In principle, two kinds of voltages can be obtained by conventionally leading symmetrical three-phase voltages, but the lead-out methods of them are different. In the three phases, there are taps at one-third of the leading position of each phase, which is different from the present invention in the wiring principle, and the voltage form required by the wiring principle of the present invention is not obtained in the true sense.

[0004] Secondly, the symmetrical three-phase voltage is drawn out, and there are relatively many leads. The design takes up a lot of space and the weight of the windings, resulting in high design costs.

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