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Voltage resistance test method and device for cable insulation material

A technology of insulating material and cable insulation, applied in the field of distribution network, can solve the problems of difficulty in determining the validity of test results, lack of testing standards for ultra-low frequency withstand voltage test, etc.

Active Publication Date: 2022-03-15
STATE GRID BEIJING ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a method and device for withstand voltage testing of cable insulation materials, to at least solve the difficulty in determining the validity of the test results when performing ultra-low frequency withstand voltage tests on cable insulation materials due to the lack of detection standards for ultra-low frequency withstand voltage tests technical issues

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  • Voltage resistance test method and device for cable insulation material
  • Voltage resistance test method and device for cable insulation material
  • Voltage resistance test method and device for cable insulation material

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Embodiment 1

[0025]According to an embodiment of the present application, there is provided a method of pressure testing of cable insulation should be noted that the steps illustrated in the flowchart drawings can be executed in a computer system a set of computer-executable instructions, and , although in the flowchart shown in a logical order, but in some cases, different order of steps is performed as shown or described.

[0026] figure 1 The test method is a voltage cable insulation material of Example of the present application, such as figure 1 , The method comprising at least the steps S102-S110, wherein:

[0027] Step S102, the acquired cable insulation test samples collected within a preset time frequency breakdown field strength, to obtain a first sequence breakdown field strength.

[0028] Wherein the breakdown field strength for each acquisition time within a preset time range of the acquired frequency breakdown field strength of the breakdown field strength of the first sequence....

Embodiment 2

[0067] According to the embodiment of the present application, a pressure test device of a cable insulating material is provided, such as figure 2 As shown, the apparatus includes at least the first acquisition module 20, the second acquisition module 22, the first determination module 24, and the second determination module 26, and the detection module 28, where:

[0068] The first acquisition module 20 is used to acquire the insulating material sample to be tested in the preset time range, and the first hitting field strength sequence, wherein the first hitting field strength sequence The breakdown field is strong for the work harvested by the work collected at each collection time in the preset time.

[0069] The second acquisition module 22 is used to obtain the ultra-low frequency strikes collected by the insulating material to be tested in the preset time range, which gives the second hitting field strength sequence, where the second hitting field strength sequence The break...

Embodiment 3

[0077] According to the present application embodiment, a non-volatile storage medium includes a stored program, wherein the device in which the non-volatile storage medium is controlled during the program operation. The pressure test method of the material.

[0078] Alternatively, the apparatus for controlling the non-volatile storage medium in the program runtime: obtaining the insulating material sample to be tested to be tested in the preset time range, the strike is strong, get the first hit The field strong sequence, where the breakdown field in the first hit field strong sequence is strong for the work collected by each collection time of the preset time, and the insulation material sample to obtain the cable to be tested is pre- The ultra-low frequency strikes collected within the time range are strong, and the second hitting field strength sequence, where the breakdown field in the second striking field is strong for the acquisition time of each collection time within the...

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Abstract

The application discloses a method and device for testing a withstand voltage of a cable insulation material. Among them, the method includes: obtaining the power frequency breakdown field strength collected by the insulation material sample of the cable to be tested within a preset time range; obtaining the ultra-low frequency breakdown field strength collected by the insulation material sample of the cable to be tested within a preset time range Strong; determine the first test result of the insulating material sample based on the power frequency breakdown field strength in the first breakdown field strength sequence, indicating whether the insulating material sample passes the power frequency withstand voltage test; determine the insulating material sample based on the first test result The second test result indicates whether the insulating material sample has passed the ultra-low frequency withstand voltage test; determines the correlation between the first breakdown field strength sequence and the second breakdown field strength sequence, and determines whether the second test result is valid based on the correlation . This application solves the technical problem that it is difficult to determine the validity of the test results when performing ultra-low frequency withstand voltage tests on cable insulation materials due to the lack of detection standards for ultra-low frequency withstand voltage tests.

Description

Technical field [0001] The present application relates to the technical field of distribution network, and in particular, a pressure test method and apparatus for cable insulating material. Background technique [0002] In recent years, in my country's urban and rural distribution grids, crosslinked polyethylene (Cross Linked polyethylene, XLPE) cable is good, easy to manufacture, easy manufacturing, convenient installation, facilitating the advantages of urban and factory ore layouts, in urban grids Widely used, grid power supply, subway power supply, high-speed rail power supply, wind power, photovoltaic power generation, electric vehicle charging pile power supply and other applications, a large number of 10kV medium voltage distribution power cables. At present, the domestic 10KV medium pressure distribution power cable is gradually entering 20 years and more, according to the expected life of the cable design of the 30-year 40 years, it is necessary to assess the operating c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
CPCG01R31/1272
Inventor 徐兴全桂媛王智晖姚玉海任志刚齐伟强杨亚奇
Owner STATE GRID BEIJING ELECTRIC POWER
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