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132kv-class 36-pulse-wave transmission rectifier transformer

A rectifier transformer and transformer technology, applied in the field of transformers, can solve the problems of the rectifier transformer with few pulses, high grid-side harmonic current, and poor power quality, and achieve the effects of reducing the volume of the transformer, reducing partial discharge, and reducing production costs.

Inactive Publication Date: 2013-09-04
BAODING TIANWEI GROUP TEBIAN ELECTRIC
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing problems in the background technology are: the rectifier transformer has few pulses, the harmonic current on the grid side is high, and the power quality is poor.

Method used

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  • 132kv-class 36-pulse-wave transmission rectifier transformer

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Embodiment Construction

[0011] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.

[0012] A 132kV class 36-pulse drive rectifier transformer, including iron core 1, low-voltage basic winding I2, low-voltage phase-shifting winding I3, ground shield 4, high-voltage winding I5, high-voltage winding II6, low-voltage basic winding II7 and low-voltage phase-shifting winding II8; The rated voltage of the side is 132kV, D connection, fully insulated structure; the secondary side is double-split, phase-shifted, and the phase-shift angles are 10° different from each other. A single transformer outputs 12 pulses, and three transformers output 36 pulses; each transformer includes Three-phase three-column iron core and winding, each phase winding is composed of a low-voltage winding and a high-voltage winding that are sequentially placed on the iron core from inside to outside; the low-voltage winding includes low-voltage basic winding I2 a...

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Abstract

The invention relates to a 132kV-class 36-pulse-wave transmission rectifier transformer and belongs to the technical field of transformers. According to the technical scheme, the rated voltage of a primary side is 132kV, and the primary side is subjected to D connection and in an all-insulation structure; and a secondary side is subjected to double split and phase shifting, and the difference between phase shifting angles is 10 degrees. A single transformer outputs 12 pulse waves, and three transformers output 36 pulse waves. Low-voltage windings comprise an axially arranged low-voltage basic winding I (2) and low-voltage phase shifting winding I (3) and an axially arranged low-voltage basic winding II (7) and low-voltage phase shifting winding II (8). High-voltage windings comprise a high-voltage winding I and a high-voltage winding II which are connected in parallel vertically. By means of the rectifier transformer, the utility rate of space of the transformer is improved, and the size of the transformer and the production cost are reduced; effects of grid-side overvoltage on valve-side rectifying elements and effects of valve-side harmonic components on power grids are reduced; and the transformer is reliable in insulation, high in short-circuit bearing capacity and phase shifting angle accuracy and capable of improving power quality.

Description

technical field [0001] The invention relates to a 132kV class 36-pulse drive rectifier transformer, which belongs to the technical field of transformers. Background technique [0002] As a rectifier transformer for the power supply of a rectifier device, it can be used in a wide range of fields. At present, the voltage level of commonly used drive rectifier transformers is generally 35kV and below. A single double-winding transformer with a single rectifier outputs 6 pulses, or a single double-split transformer with two rectifiers outputs 12 pulses. The existing problems in the background technology are: the pulse number of the rectifier transformer is small, the harmonic current at the grid side is high, and the power quality is poor. In order to improve the power quality, a 132kV class 36-pulse transmission rectifier transformer is designed. A single double-split, phase-shifting rectifier transformer outputs 12 pulses, and three transformers output 36 pulses. That is, a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F30/12H01F27/30H01F27/36H01F27/29
Inventor 赵峰郑秀娟李静张韶承郑赞刘洪文
Owner BAODING TIANWEI GROUP TEBIAN ELECTRIC
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