Method for simulating and calculating heat transfer value of transformer based on three-dimensional model

A technology of three-dimensional model and simulation calculation, which is applied in calculation, computer-aided design, design optimization/simulation, etc., to achieve the effects of improving overload capacity and service life, reducing temperature rise, and optimizing materials

Pending Publication Date: 2021-12-28
GUANGXI UNIV
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Problems solved by technology

Nor can it provide data support for the design of the best design material transformer

Method used

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  • Method for simulating and calculating heat transfer value of transformer based on three-dimensional model
  • Method for simulating and calculating heat transfer value of transformer based on three-dimensional model
  • Method for simulating and calculating heat transfer value of transformer based on three-dimensional model

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Embodiment 1

[0061] Such as Figure 1-10 Among them, the transformer design object: determine the material of the iron core 11 in the transformer, the transformer oil, and the winding material.

[0062] In the later stage of the transformer, the iron core 11 is replaced by an amorphous alloy material from silicon steel, the transformer oil is a new type of environmentally friendly vegetable oil, and the winding material is copper.

[0063] The two-dimensional and three-dimensional models of the test transformer and the three-dimensional model of the amorphous alloy vegetable oil distribution transformer were constructed, and the structure was optimized.

[0064] During specific implementation, a 10kV class environment-friendly new plant insulating oil transformer of model S-M-315 / 10-NX2 can be used as a simulation prototype. The high and low voltage windings 12 of the transformer are pie-shaped windings wound by copper wires. In order to improve the overload bearing capacity, the heat-res...

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Abstract

The invention provides a method for simulating and calculating a heat transfer value of a transformer based on a three-dimensional model. The method comprises the steps of determining a design object of a transformer; establishing a three-dimensional model; verifying the rationality and accuracy of the three-dimensional model; using the design object to replace a material at a corresponding position in the transformer; fitting a physical property parameter change rule into a mathematical function; setting boundary conditions of a three-dimensional model region, and carrying out bidirectional coupling calculation to obtain temperature rise characteristics, load capacity and hot spot sizes of the transformer adopting the design object; and analyzing a simulation result, and optimizing the transformer. Temperature distribution, temperature rise calculation and winding hot spot prediction in the design object material transformer are researched by comparing the three-dimensional model. The temperature rise characteristic, the hot spot size and the overload capacity of the transformer of the design object material are analyzed, and reference data are provided for subsequent design and manufacturing of an energy economical transformer. No-load loss of the transformer is optimized, temperature rise is reduced, overload capacity of the distribution transformer is improved, and service life of the distribution transformer is prolonged.

Description

technical field [0001] The invention relates to the field of transformer temperature field and fluid field calculation, in particular to a method for simulating and calculating transformer heat transfer values ​​based on a three-dimensional model. Background technique [0002] As of the end of 2020, there are about 17 million transformers operating on the grid in my country, with a total capacity of about 11 billion kVA, and their total loss accounts for about 40% of the power loss in transmission and distribution, providing a market for the promotion of high-efficiency and energy-saving transformers. On January 15, 2021, the Ministry of Industry and Information Technology, the Municipal Supervision Bureau, and the Energy Bureau formulated and issued the "Transformer Energy Efficiency Improvement Plan (2021-2023)", which aims to improve the energy utilization rate of the transformer industry and promote green and low-carbon development. Policy guidance and support. The mand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F119/08
CPCG06F30/23G06F2119/08
Inventor 郑含博郭婧杨杭
Owner GUANGXI UNIV
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