Transformer bank

A transformer group and transformer technology, applied in the direction of transformers, fixed transformers, transformer/inductance components, etc., can solve problems such as failures, and achieve the effect of avoiding transformer failures and application safety

Inactive Publication Date: 2019-03-08
HAINAN JINPAN INTELLIGENCE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a transformer group, which can solve the problem in the prior art that the three-phase axial double-split transformer used in the power conversion system is prone to failure when the load of the converter is unbalanced

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0033] The invention provides a transformer group, which can solve the problem in the prior art that the three-phase axial double-split transformer used in the power conversion system is prone to failure when the load of the converter is unbalanced.

[0034] Such as figure 1 As shown, the embodiment of the present invention discloses a transformer group, including:

[0035] Three double-column single-phase transformers; wherein: the three double-column single...

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Abstract

The invention discloses a transformer bank. The transformer bank comprises three double-column single-phase transformers; and each double-column single-phase transformer comprises a first iron core column, a second iron core column, and a high-voltage coil and a low-voltage coil arranged on the first iron core column, and a high-voltage coil and a low-voltage coil arranged on the second iron corecolumn. Each iron core column only comprises one low-voltage coil, so that no magnetic coupling relation exists between the low-voltage coils, a leakage magnetic field cannot be generated between thelow-voltage coils due to load imbalance, the eddy current loss cannot be generated, and the problem of transformer faults caused by the load imbalance is avoided; and meanwhile, compared with a three-phase axial double-split transformer in the prior art, the transformer bank adopted by the invention is safer to apply and more reliable.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a transformer group. Background technique [0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. It is widely used in power conversion systems in the fields of wind power generation, photovoltaic power generation, urban rail transit traction rectification, ship electric propulsion, etc. Among them, in the power conversion system, the power supply grid and the converter are connected through a transformer. [0003] The transformer used in the existing power conversion system is a three-phase axial double-split transformer. Each core leg of the three-phase axial double-split transformer has two parallel high-voltage coils and two independent low-voltage coils. Each low-voltage coil is connected to a group of converters. Under normal working conditions, the two groups of converters connected to the two low-voltage coils o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F30/12H01F27/28H01F27/34
CPCH01F30/12H01F27/28H01F27/34H01F27/346H01F2027/348
Inventor 王忠波王耀强吴美增张灿辉
Owner HAINAN JINPAN INTELLIGENCE TECH CO LTD
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