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Compensating winding system of power transformer with single-phase four-column iron core structure

A technology for power transformers and compensation windings, applied in the direction of transformers/inductor coils/windings/connections, transformers, fixed transformers, etc., can solve problems such as increased load loss of power transformers, and achieve the effect of suppressing additional magnetic flux

Inactive Publication Date: 2012-02-29
CHINA XD ELECTRIC CO LTD
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  • Abstract
  • Description
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Problems solved by technology

However, the use of this outlet method will cause a window-through current in the core frame of the power transformer, and the window-through current will excite the iron core and generate additional magnetic flux (referred to as additional magnetic flux), which increases the load loss of the power transformer

Method used

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  • Compensating winding system of power transformer with single-phase four-column iron core structure
  • Compensating winding system of power transformer with single-phase four-column iron core structure
  • Compensating winding system of power transformer with single-phase four-column iron core structure

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Embodiment Construction

[0018] The compensation winding system of the power transformer with single-phase four-column core structure of the present invention will be described in detail below in conjunction with the accompanying drawings:

[0019] see Figure 1 to Figure 4 As shown, the compensation winding system of the power transformer of the single-phase four-column core structure of the present invention includes the left compensation winding 3 and the right compensation winding 4 of the side columns on the left and right sides and the left compensation winding 10 and the right compensation winding 11 on the iron yoke, a total of four The four compensating windings are combined in pairs, specifically: the outlet ends of the left compensating winding 3 of the side columns on both sides are connected with the outlet ends of the left compensating winding 10 on the iron yoke to form a group, and the right sides of the side columns on both sides The outlet end of the compensation winding 4 is connect...

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Abstract

The invention provides a compensating winding system of a power transformer with a single-phase four-column iron core structure. The compensating winding system comprises a left compensating winding and a right compensating winding wound on a left side column and a right side column, and a left compensating winding and a right compensating winding wound on an iron yoke, wherein the outlet end of the left compensating winding wound on the left side column is connected with the outlet end of the left compensating winding wound on the iron yoke, and the outlet end of the right compensating winding wound on the right side column is connected with the outlet end of the right compensating winding wound on the iron yoke. With the adoption of the compensating winding system, according to the Faraday law of electromagnetic induction, a main magnetic flux generated by windings, an additional magnetic flux generated by window-penetrating current and an induction magnetic flux generated by compensating windings can be generated in the iron core, the directions of the induction magnetic flux and the additional magnetic flux are always opposite, and the aim of inhibiting the additional magnetic flux generated by the window-penetrating current is effectively fulfilled.

Description

technical field [0001] The invention relates to a power transformer, in particular to a compensation winding system of a power transformer with a single-phase four-column core structure. Background technique [0002] With the rapid development of my country's electric power industry, the voltage level and capacity of power transformers are increasing day by day, and the transportation size of power transformers is also increasing accordingly. In order to meet the requirements of the transportation limit, the single-phase power transformer can use the outlet method that the high-voltage head end and the neutral point end are respectively outlets on both sides of the iron core, which can minimize the size and weight of the power transformer in the length direction and reduce the material consumption rate. However, using this outlet method will cause a window-through current to exist in the iron core frame of the power transformer, and the window-through current will excite the...

Claims

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Application Information

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IPC IPC(8): H01F27/38H01F27/30
CPCH01F27/38H01F30/10
Inventor 韩晓东孟丽坤王风伟孙战库徐徐
Owner CHINA XD ELECTRIC CO LTD
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