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Transformer insulation test method and device

An insulation test and transformer technology, applied in the electric power field, can solve problems such as test failure and failure to correctly reflect the insulation performance of transformers, and achieve the effect of correcting test results and solving test failure

Active Publication Date: 2021-08-20
STATE GRID BEIJING ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a transformer insulation testing method and device, to at least solve the technical problem that the transformer insulation testing method in the related art easily leads to test failure and cannot correctly reflect the insulation performance of the transformer

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  • Transformer insulation test method and device
  • Transformer insulation test method and device

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Embodiment Construction

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a transformer insulation testing method and device. Wherein, the method includes: determining the temperature correction coefficient according to the maximum electric field intensity of the tested part of the transformer at different test temperatures; selecting the largest temperature correction coefficient from a plurality of temperature correction coefficients as the voltage correction coefficient; The voltage of the transformer insulation test is corrected and the insulation test is carried out. The invention solves the technical problem that the transformer insulation test method in the related art easily leads to test failure and cannot correctly reflect the insulation performance of the transformer.

Description

technical field [0001] The invention relates to the field of electric power, in particular to a transformer insulation testing method and device. Background technique [0002] In related technologies, the transformer needs to be tested when it leaves the factory. The insulation system of the transformer is composed of the insulation material of the transformer. The insulation system is the basic condition for the normal operation and operation of the transformer and ensures the safe and stable operation of the transformer. During the insulation test, under different ambient temperature and load conditions, the temperature change of the oil-paper insulation system in the main insulation of the transformer will cause the dielectric constant and dielectric strength of the transformer oil and cardboard to change, so that the transformer can be kept at normal temperature. It meets the insulation test requirements under high temperature conditions, but fails to meet the insulation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
CPCG01R31/1227G01R31/1263
Inventor 苗旺刘弘景吴麟琳周峰黄山
Owner STATE GRID BEIJING ELECTRIC POWER