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A Transformer Model

A transformer model and high-voltage coil technology, which is applied to transformer/inductor components, transformer/inductor coils/windings/connections, instruments, etc., can solve the problem of transformer short-circuit resistance and heavy workload

Active Publication Date: 2021-05-28
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Application Information

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Problems solved by technology

[0005] The invention provides a transformer model, the wire form can simulate transformers in different periods, so as to solve the problem in the prior art that the workload of testing the short-circuit resistance of the transformer is large

Method used

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with drawings and embodiments.

[0023] see figure 1 , is a schematic structural diagram of a three-phase three-winding transformer provided in an embodiment of the present invention, including an A-phase winding 1, a B-phase winding 2, and a C-phase winding 3, and a clamp 4 for fixing the windings, for making the windings The cushion block 5 which is insulated from the base 6 and the lifting ring 7 for hoisting the transformer. A-phase winding 1 includes A-phase high-voltage coil, A-phase medium-voltage coil and A-phase low-voltage coil; B-phase winding 2 includes B-phase high-voltage coil, B-phase medium-voltage coil and B-phase low-voltage coil; C-phase winding 3 includes C-phase high-voltage wire Coil, C phase medium voltage coil and C phase low voltage coil.

[0024] In order to enable the transformer model provided by the embodiment of the present invention to simulate the characteristics of tr...

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Abstract

The invention discloses a transformer model, which is a three-phase three-winding transformer, wherein, the A-phase high-voltage coil is wound by tangled aluminum wires, the A-phase medium-voltage coil is continuously wound by copper wire inner screen, and the A-phase low-voltage coil is wound by paper Helical winding of copper-clad wire; B-phase high-voltage coil adopts combined wire inner screen continuous winding; B-phase medium-voltage coil adopts entangled winding of paper-wrapped aluminum wire; B-phase low-voltage coil adopts double-helix self-adhesive transposition wire Winding; the C-phase high-voltage coil adopts the form of combined wire entanglement in the middle part, the C-phase medium-voltage coil adopts the form of self-adhesive transposed wire inner screen continuous end wires, and the C-phase low-voltage coil adopts transposed wire four-helical winding system. The invention adopts different coil materials and coil winding forms, and can simulate the coil characteristics of transformers in different production periods. When testing the short-circuit resistance of transformers in different production periods, only one transformer model is needed, reducing the number of transformers. Reduce the workload of testing and simplify the testing process.

Description

technical field [0001] The invention relates to the technical field of electric power, in particular to a transformer model. Background technique [0002] The power transformer is the hub of transmission and distribution of electric energy and the core component of the power grid. Its reliable operation is not only related to the power quality of the majority of users, but also related to the safety of the entire system. The reliability of power transformers is determined by their health status, not only depends on design and manufacturing and structural materials, but also closely related to maintenance. [0003] The maintenance of power transformers includes testing the short-circuit resistance of the transformers. The transformers used in the power grid are manufactured in different ages, so the transformers in different periods have differences in coil material selection, coil winding methods, and insulation structures. During the short-circuit resistance test of transf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/28G01R31/00
CPCG01R31/00H01F27/2823H01F2027/2838
Inventor 邹德旭颜冰徐肖伟刘光祺钱国超彭庆军
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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