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Environment humidity adjustable insulation silicone oil partial discharge decomposition experiment equipment and method

A technology of partial discharge and environmental humidity, which is applied in the direction of measuring electricity, measuring electrical variables, and testing dielectric strength, etc., can solve the problems that the research of micro-water content on silicone oil cannot be realized, and achieve improved experimental reliability, good air tightness, The effect of simple structure

Active Publication Date: 2020-09-08
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that existing insulating oil electrical aging test equipment cannot realize the research on the influence of micro-water content on the partial discharge decomposition characteristics of silicone oil, the purpose of the present invention is to Provide a kind of experimental equipment and experimental method for partial discharge decomposition of insulating silicone oil with adjustable environmental humidity. By adjusting the air water content in the partial discharge decomposition chamber, the micro-water content of insulating silicone oil can be precisely adjusted, and then the partial discharge of insulating silicone oil with different micro-water content can be performed. Decomposition experiment

Method used

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  • Environment humidity adjustable insulation silicone oil partial discharge decomposition experiment equipment and method
  • Environment humidity adjustable insulation silicone oil partial discharge decomposition experiment equipment and method
  • Environment humidity adjustable insulation silicone oil partial discharge decomposition experiment equipment and method

Examples

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Embodiment 1

[0031] Partial discharge decomposition experimental equipment for insulating silicone oil with adjustable ambient humidity in this embodiment, such as Figure 1 to Figure 3 As shown, it includes a partial discharge loop unit for providing a voltage applied to the insulating silicone oil, an insulating silicone oil partial discharge decomposition experimental unit 6 connected to the partial discharge loop unit, and an ambient humidity connected to the insulating silicone oil partial discharge decomposition experimental unit 6. Regulator 20.

[0032] Such as figure 1 As shown, the partial discharge circuit unit includes a voltage regulator 1 , an isolation transformer 2 , a non-PD power frequency test transformer 3 , a protection resistor 4 , a resistance-capacitance voltage divider 5 , a high-frequency current sensor 7 and an oscilloscope 8 . The input end of the voltage regulator 1 is connected to the 380V mains, and the output end thereof is connected to the input end of the...

Embodiment 2

[0037] This example provides an experimental method for partial discharge decomposition of insulating silicone oil with adjustable environmental humidity. Using the experimental equipment for partial discharge decomposition of insulating silicone oil with adjustable environmental humidity in Example 1, different trace moisture The detection of partial discharge decomposition gas components of insulating silicone oil, the specific steps are as follows:

[0038] (1) Spray dry insulating silicone oil: wipe the sealed cavity 13 to remove the moisture on the inner wall to keep the sealed cavity 13 dry, close the valve-17 between the sealed cavity 13 and the oil storage tank 9 and connect with the sealed cavity 13 in turn Sampling valve 18, then open the valve two 11 between the vacuum pump 10 and the sealed cavity 13, start the vacuum pump 10 to evacuate the sealed cavity 13. When the value of the vacuum gauge 12 does not exceed 0.01MPa, first close the valve two 11 between the vac...

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Abstract

The invention discloses environment humidity adjustable insulation silicone oil partial discharge decomposition experiment equipment and method. The experiment equipment comprises a partial dischargeloop unit used for providing voltage applied to insulating silicone oil, an insulating silicone oil partial discharge decomposition experiment unit connected to the partial discharge loop unit, and anenvironment humidity regulator connected with the insulating silicone oil partial discharge decomposition experiment unit. The insulating silicone oil partial discharge decomposition experiment unitcomprises a sealed cavity, an oil storage tank connected with the sealed cavity, a needle electrode and a plate electrode oppositely arranged in the sealed cavity, and a vacuum pump connected with thesealed cavity; the environment humidity regulator comprises a three-way quartz tube, the three-way quartz tube is connected with the trace moisture sample injector and the dry air bottle. The partialdischarge decomposition experiment device can realize partial discharge decomposition experiments of insulating silicone oil with different micro-water contents under the action of partial discharge,and can be used for mastering the influence rule of the micro-water contents on the partial discharge decomposition characteristics of the insulating silicone oil.

Description

technical field [0001] The invention belongs to the technical field of insulating silicone oil aging experiments, and relates to studying the law of the influence of micro-water on the partial discharge decomposition characteristics of silicone oil by means of measuring the partial discharge decomposition gas of insulating silicone oil, in particular to an experimental equipment for partial discharge decomposition of insulating silicone oil with adjustable environmental humidity and methods. Background technique [0002] High-voltage cable oil-filled terminals (hereinafter referred to as "oil terminals") use silicone oil as the insulating medium. They have the advantages of mature manufacturing technology, safe and reliable operation, good heat dissipation performance, and less maintenance workload. They are widely used in high-voltage cable transmission lines. However, some accidental factors, such as the mixing of impurities, poor lead seals, moisture intrusion, etc., may ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12G01R31/20
CPCG01R31/1272G01R31/1281G01R31/20
Inventor 郭金明田树军卓浩泽
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD