Electrical-thermal aging device of cable accessories under high voltage and high current and test method thereof

A technology for cable accessories and aging devices, which is applied in the direction of measuring devices, measuring electricity, and measuring electrical variables, etc., to achieve the effects of high withstand voltage, simple operation of the device, and good sealing

Inactive Publication Date: 2012-10-17
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This scheme simulates the actual working conditions of electrical equipment insulation materials under the joint aging effect of high-voltage electric field and current thermal effect, but it belongs to the external heating type of electrothermal aging. Aging mechanism of insulating materials under action

Method used

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  • Electrical-thermal aging device of cable accessories under high voltage and high current and test method thereof
  • Electrical-thermal aging device of cable accessories under high voltage and high current and test method thereof
  • Electrical-thermal aging device of cable accessories under high voltage and high current and test method thereof

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Embodiment

[0033] The electrothermal aging test device for cable accessories under high voltage and high current includes a high voltage generating unit 1 , a test circuit unit 2 , a large current generating unit 3 and a signal measuring unit 4 . The high-voltage generating unit 1 is connected to the test circuit unit 2, and the high voltage is introduced into the test circuit. The test circuit unit 2 passes through the large-current generating unit 3 to form magnetic field coupling and generate a large current. During the aging test, the high-voltage generating unit and the large-current generating unit The units work at the same time to achieve the purpose of applying high voltage and passing large current in the test circuit unit. The signal measurement unit 4 is installed in the test circuit unit 2, and realizes the detection of the insulation aging state of the cable accessories by collecting and detecting electrical characteristic parameters such as partial discharge in the sample c...

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Abstract

The invention discloses an electrical-thermal aging test device of cable accessories under high voltage and high current. The electrical-thermal aging test device is characterized by comprising the following four functional parts: a high-voltage generation unit (1), a test loop unit (2), a high-current generation unit (3) and a signal measurement unit (4). The high-voltage generation unit (1) is connected with the test loop unit (2) so as to introduce the high voltage to a test loop; the test loop unit (2) passes through the high-current generation unit (3) to form a magnetic field couple and generate the high current, and when the aging test is performed, the high-voltage generation unit and the high-current generation unit work at the same time to realize the purpose of applying the high voltage and the high current in the test loop unit; and the signal measurement unit (4) is installed in the test loop unit (2), so that the isolation aging state detection of the cable accessories can be realized through collecting the electrical characteristic parameters which are used for detecting the partial discharge of the sample cable accessories.

Description

technical field [0001] The invention relates to an electrothermal aging device for cable accessories under high voltage and high current and a test method thereof, belonging to the technical field of operation and maintenance of power cables. Background technique [0002] In recent years, with the large-scale transformation of my country's urban power grids, underground cables have gradually replaced overhead lines to build urban transmission lines and distribution networks. The proportion of cables used in major cities has increased rapidly, and cable accessories are widely used. Power cables are generally composed of two parts: the cable body and the cable accessories. During long-term operation, the insulation of the power cables and their accessories will gradually deteriorate due to the aging effect of electric heat, and their physical and chemical properties will decline, which will eventually lead to insulation failure and seriously threaten the reliable operation of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/12
Inventor 周凯万利李旭涛赵威陶霰韬熊庆陶文彪潘荣超
Owner SICHUAN UNIV
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