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Method for evaluating internal defect discharge of GIS equipment by utilizing ultraviolet light

An internal defect, ultraviolet light technology, applied in the direction of using optical methods to test, measure electricity, measure electrical variables, etc., can solve problems such as low sensitivity, inability to achieve early warning, etc., to reduce grid costs and reduce accident rates Effect

Pending Publication Date: 2021-03-30
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, neither the gas chromatography detection method nor the partial discharge method directly detects the parameters of the factors causing the discharge, but detects the ultrasonic waves and decomposition products generated by the discharge, which are indirect methods and the sensitivity is not high
And it can only be used after the gas chamber of the GIS knife gate has been discharged, and early warning cannot be achieved

Method used

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  • Method for evaluating internal defect discharge of GIS equipment by utilizing ultraviolet light
  • Method for evaluating internal defect discharge of GIS equipment by utilizing ultraviolet light

Examples

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Effect test

Embodiment 1

[0026] figure 1 It shows the flow chart of the method of using ultraviolet light to evaluate the internal defect discharge of GIS equipment in the embodiment of the present invention, specifically including:

[0027] S1: Use the ultraviolet light finish instrument to detect the internal surface finish of the GIS equipment through the observation hole;

[0028] S2. Adjust the angle and direction of the finish instrument, and check the surface finish inside the GIS multiple times;

[0029] S3. According to the internal surface finish of the GIS equipment, evaluate whether the dirt on the internal surface of the GIS equipment will cause internal discharge of the GIS equipment, and obtain the evaluation result;

[0030] S4. Set the operation mode of the GIS equipment according to the evaluation result.

[0031] The method also includes: acquiring voltage parameters in the GIS knife lock air chamber.

[0032] The voltage parameter is 220kV or 110kV.

[0033] The evaluation resu...

Embodiment 2

[0045] figure 1 It shows the flow chart of the method for evaluating the internal defect discharge of GIS equipment with ultraviolet light in the embodiment of the present invention, specifically including:

[0046] S1: Use the ultraviolet light finish instrument to detect the internal surface finish of the GIS equipment through the observation hole;

[0047] S2: Adjust the angle and direction of the finish instrument, and check the surface finish inside the GIS multiple times;

[0048] S3: According to the internal surface finish of the GIS equipment, evaluate whether the dirt on the internal surface of the GIS equipment will cause the internal discharge of the GIS equipment;

[0049] S4. Set the operation mode of the GIS equipment according to the evaluation result.

[0050] The method also includes: acquiring voltage parameters in the GIS knife lock air chamber.

[0051] The voltage parameter is 220kV or 110kV.

[0052] The evaluation results are: discharge will not occ...

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Abstract

The invention discloses a method for evaluating internal defect discharge of GIS equipment by utilizing ultraviolet light. The method comprises the following steps of: detecting the internal surface smoothness of the GIS equipment by adopting an ultraviolet smoothness instrument through an observation hole; adjusting the angle and direction of the smoothness instrument, and detecting the internalsurface smoothness of the GIS for multiple times; evaluating whether dirt on the internal surface of the GIS equipment can cause internal discharge of the GIS equipment or not according to the internal surface smoothness of the GIS equipment, and obtaining an evaluation result; and setting a GIS equipment operation mode according to the evaluation result. According to the method of the embodimentof the invention, the method achieves the early warning of the discharge of the gas chamber of the GIS equipment through detecting whether the internal surface smoothness of the GIS equipment will cause the internal discharge of the GIS equipment or not, reduces the accident rate, and reduces the cost of a power grid.

Description

technical field [0001] The invention relates to the technical field of electric power detection, in particular to a method for evaluating internal defect discharge of GIS equipment by using ultraviolet light. Background technique [0002] In recent years, gas-insulated metal-enclosed switchgear (GIS) has a small footprint, is less affected by climatic conditions, has a long service life, requires less maintenance work, has a compact structure, is easy to install, and is suitable for areas with complex terrain and narrow terrain. Features, widely used in power industry. However, as the number of GIS substations continues to increase, GIS equipment failures are also increasing. Analysis of the main reason for the failure is that the GIS equipment will inevitably generate suspended particles inside the equipment during the process of production, assembly, transportation, etc., and the inner wall and insulator surface will be dirty, which will drastically reduce the SF 6 The i...

Claims

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Application Information

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IPC IPC(8): G01R31/12G01N21/33
CPCG01R31/1218G01R31/1227G01N21/33
Inventor 边美华张兴森彭家宁杨艺云卢展强李君华刘桂蝉梁世容
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD