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AC (alternating current) phase-changing transformer and power transmission method thereof

A technology of AC transformers and transformers, applied in the direction of transformers, transformer/inductor magnetic cores, fixed transformers, etc., can solve the problems that are not conducive to improving the transmission and transformation voltage, overhead lines and high facility costs, and achieve reduced transmission costs, simple structure, The effect of reducing the number of windings

Inactive Publication Date: 2012-07-18
陈端生
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. For long-distance power transmission, three conductors are still used for power transmission, and the overhead and facility costs of the lines are relatively high;
[0004] 2. There is a 'phase-to-phase' voltage on both the transformer and the transmission line, which is relatively unfavorable for increasing the transmission voltage

Method used

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  • AC (alternating current) phase-changing transformer and power transmission method thereof
  • AC (alternating current) phase-changing transformer and power transmission method thereof
  • AC (alternating current) phase-changing transformer and power transmission method thereof

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Embodiment Construction

[0029] In order to simplify the analysis and facilitate the explanation, it is assumed that the cross-sections of each embodiment, each transformer, and each iron core column are the same (if the cross-section of the transformer iron core column is different, it will be explained in the embodiment), the primary and secondary winding turns The numbers are the same. In this way, in the following analysis: because the magnetic flux in each transformer and each iron core column is the same (if the magnetic flux of the transformer iron core column is not the same, it will be explained in the embodiment), so the magnetic flux on the iron core column The voltage relationship of each winding will appear simple and easy to describe; when there is no description, it means that they are equal. When analyzing the relationship between magnetic potential and current, it is not necessary to consider the number of turns, but only the current relationship.

[0030] The first embodiment - the ...

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Abstract

The invention relates to a set of AC phase-changing transformer capable of changing phase number and changing voltage, and a power transmission method of the transformer. The transformer suitable for three-phase and two-phase AC power transmission is characterized in that the transformer can transmit power in a single-phase single-line and grounded manner at the high-voltage side; and the transformer at the power consuming end is also provided with an exciter besides a single-phase winding at the primary side. The transformer is simple, convenient and effective in changing a single-phase power to a three-phase or two-phase AC power meeting the power requirement, thereby relatively lowering the cost for suspending power transmission lines and the facility cost. In addition, the number of windings of the transformer is reduced by obviating phase-to-phase voltage so as to facilitate insulation of the transformer. Accordingly, the transformer provided by the invention is beneficial to improvement on transmission voltage and reduction of cross section area of power transmission wires.

Description

technical field [0001] The invention relates to a transformer for transmitting alternating current and an alternating current transmission and transformation method thereof. Background technique [0002] The known three-phase alternating current transmission method is: using a three-phase transformer, using three-phase three-wire on the high-voltage side and three-phase four-wire on the low-voltage side. Its main advantages are: the cross-section of the iron core of the three-phase transformer is small, the structure is simple, compact, and the cost is low; and its transmission wires only need to use three instead of six. But there are also some deficiencies, mainly: [0003] 1. For long-distance power transmission, three conductors are still used for power transmission, and the overhead and facility costs of the lines are relatively high; [0004] 2. There is a 'phase-to-phase' voltage on both the transformer and the transmission line, which is relatively unfavorable for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F30/14H01F27/24H01F27/30H01F27/40H02J3/00
Inventor 陈端生
Owner 陈端生
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