Power cable partial discharge simulation system and testing method

A power cable and partial discharge technology, applied in the direction of testing dielectric strength, etc., can solve economic losses, power outages and other problems, achieve the effect of preventing malignant accidents, strong anti-interference performance, and good application prospects

Inactive Publication Date: 2015-04-29
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem of how to improve the accuracy of cable working state evaluation by overcoming the existing detection and positioning through power failure pre-test method, which requires power failure and will bring certain economic losses.

Method used

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  • Power cable partial discharge simulation system and testing method
  • Power cable partial discharge simulation system and testing method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0025] Such as figure 1 As shown, the power cable partial discharge simulation system of the present invention includes a pulse generation unit 1, a measurement unit 2, a pulse detection unit 3 and a pulse wave transponder 4,

[0026] The pulse generating unit 1 is arranged at the near end of the power cable, and is used to inject excitation pulses to the near end of the power cable through coupling, and a portable pulse generator can be used, which is convenient to carry;

[0027] The measuring unit 2 is arranged at the near end of the power cable, and is used for measuring and analyzing the pulse location of the partial discharge of the power cable, and controlling the pulse generating unit 1...

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Abstract

The invention discloses a power cable partial discharge simulation system and testing method. The system comprises a pulse generating unit, a measuring unit, pulse detecting unit and a pulse transponder, wherein the control output end of the measuring unit is connected with the drive pulse control input end of the pulse generating unit, the drive pulse output end of the pulse generating unit is connected with the near end of a power cable through a first high-frequency current transformer, the input end of the measuring unit is connected with the near end of the power cable through second high-frequency current transformer, the input end of the pulse detecting unit is connected with the far end of the power cable through a third high-frequency current transformer, the output end of the pulse detecting unit is connected with the pulse transponder, and the pulse transponder is connected with the far end of the power cable through a fourth high-frequency current transformer. The power cable partial discharge simulation system has the advantages that partial discharge signal positions can be detected accurately, cable faults can be discovered in advance to facilitate prevention, and the system is high in interference resistance and promising in application prospect.

Description

technical field [0001] The invention relates to a power cable partial discharge simulation system and a test method, belonging to the technical field of power equipment detection. Background technique [0002] With the development of my country's modernization and the continuous progress of science and technology, my country's research, manufacture and application of cables have developed rapidly. From power stations to urban and rural power grids, from power distribution stations to factory streets, cable lines have been more and more widely used due to their unique characteristics, and their number has doubled, playing an irreplaceable role in many occasions. . In such a huge and complex cable network, due to many factors such as cable production quality, improper construction, and poor operation and maintenance, cable failures will occur. Ensuring the normal operation of cables is the focus of ensuring reliable power supply, and insulation aging accounts for a large part...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
Inventor 徐延昌康勇赵宇晗吴冀鹏任雨郭中申陈郸静王志强王绍军郭建梁胡兵
Owner STATE GRID CORP OF CHINA
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