Power transformer winding short-circuiting transient stress analysis method and device

A short-circuit technology for power transformers and windings, which is applied to transformers/inductor coils/windings/connections, instruments, electrical digital data processing, etc., can solve the problems of transformers with immature and complete technical and theoretical foundations, and improve short-circuit resistance intensity effect

Active Publication Date: 2017-12-01
GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for analyzing the short-circuit transient force of power transformer windings, which solves the

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  • Power transformer winding short-circuiting transient stress analysis method and device
  • Power transformer winding short-circuiting transient stress analysis method and device
  • Power transformer winding short-circuiting transient stress analysis method and device

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Embodiment Construction

[0058] The embodiment of the present invention provides a method and device for analyzing the short-circuit transient force of a power transformer winding, which solves the technical problem that there is no mature and complete technical theoretical basis for the current research on multi-physical field coupling numerical simulation of the transformer.

[0059] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following 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 prese...

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Abstract

The embodiment of the invention discloses a power transformer winding short-circuiting transient stress analysis method and device. A three-dimensional magnetic structure coupling model of a three-phase transformer is built, static simulation of winding short-circuiting is pre-conducted on the coupling model, the stress result of a winding is obtained, according to the stress result of the winding, coil modeling is further conducted on the coupling model according to the stress result of the winding, a refined transformer model is obtained, under the three-phase short-circuiting condition, transient electromagnetic field simulation analysis is conducted on the refined transformer model, the transient stress of a single coil of the winding is analyzed, a transient stress curve showing the change of winding coils along with time is obtained, and a forceful basis is provided for the accumulative effect of a deformer under the short-circuit impact, the anti-short-circuit strength improvement of the deformer and other kinds of related research.

Description

technical field [0001] The invention relates to the field of short-circuit calculation of power transformer windings, in particular to a method and device for analyzing short-circuit transient force of power transformer windings. Background technique [0002] As the primary power equipment in the power grid, the power transformer is also the core equipment connecting the power grid and users, and undertakes important power transformation tasks. However, when a short-circuit fault occurs in the transformer, the electromotive force received by the winding due to the electromagnetic effect is very large, which may easily cause damage to the winding. [0003] At present, there is no mature and complete technology to provide foundation and support for the research of multi-physics coupling numerical simulation of transformers. [0004] Therefore, in view of the above problems, a short-circuit transient force analysis method for power transformer windings is provided to solve the...

Claims

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Application Information

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IPC IPC(8): G06F17/50H01F27/28
CPCG06F30/20G06F2119/06H01F27/28Y02E60/00
Inventor 李德波邓剑华
Owner GUANGDONG ELECTRIC POWER SCI RES INST ENERGY TECH CO LTD
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