Device and method for united aging of multi-group piece-shaped samples under voltage temperature gradient

A sheet-like sample, temperature gradient technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as differences, affecting the aging results of insulating dielectric materials, and affecting the efficiency of aging treatment.

Inactive Publication Date: 2014-10-29
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] Insulation materials in DC power equipment work under the combined action of temperature difference inside and outside and DC electric field, and the resistivity of insulation materials has a nonlinear relationship with temperature, so the electric field distribution in real DC equipment insulation may be different from the electric field

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  • Device and method for united aging of multi-group piece-shaped samples under voltage temperature gradient
  • Device and method for united aging of multi-group piece-shaped samples under voltage temperature gradient
  • Device and method for united aging of multi-group piece-shaped samples under voltage temperature gradient

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[0034] 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 described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0035] See figure 2 , The combined aging device of multiple sets of sheet samples under high voltage and temperature gradient of the present invention includes a high voltage direct current power supply 101, an upper electrode 102 and a lower electrode 103; the upper electrode 102 is connected to the output terminal of the high voltage direct current power supply 101, The ground terminal of the DC power supply 101 and the lower electrode...

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Abstract

The invention discloses a device and method for united aging of multi-group piece-shaped samples under voltage temperature gradient. The device comprises an upper electrode, a lower electrode, a first constant temperature source, a second constant temperature source, a high-voltage direct-current power supply and a circuit protection device, wherein the upper electrode is used for being in contact with one side of each aged piece-shaped sample; the lower electrode is used for being in contact with the other side of each tested insulating material piece-shaped sample; the first constant temperature source is used for conducting the temperature to the upper electrode; the second constant temperature source is used for conducting the temperature to the lower electrode; the high-voltage direct-current power supply is used for controlling voltage of the upper electrode; and the circuit protection device is used for protecting a device in a circuit and the piece-shaped samples having not undergone breakdown. The device and the method are used for performing united aging on the multi-group piece-shaped samples under a high-voltage direct-current electric field and a temperature gradient field.

Description

technical field [0001] The invention belongs to the technical field of aging of polymer insulating materials, and relates to an aging method for insulating materials in high-voltage DC power equipment under the condition that there is a temperature difference between the electric field and the inside of the material, and specifically relates to a multi-group sheet-shaped sample under high-voltage conditions. Combined aging device and method under temperature gradient. Background technique [0002] Insulation materials in power equipment have been subjected to the combined effects of electricity and heat for a long time, especially under the DC electric field, the space charge effect under the DC voltage and the temperature gradient effect, which seriously affect the long-term service life of the DC insulation. In order to study the long-term reliability of DC insulation, the current method commonly used at home and abroad is to conduct electric-thermal joint aging tests, but...

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Application Information

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IPC IPC(8): G01R31/00
Inventor 王霞王陈诚孙晓彤吴锴屠德民
Owner XI AN JIAOTONG UNIV
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