Experimental apparatus for researching influence of humidity and air pressure on corona characteristics of high-voltage electrode

Abstract

The invention belongs to the technical field of high-voltage experiments, and in particular relates to an experimental device for studying the influence of humidity and air pressure on the corona-initiation characteristics of high-voltage electrodes under compound voltage, including: a horizontal plexiglass cylinder 1, a horizontal plexiglass cylinder 1 Two vacuum gauges are installed on the top of the wall, bottom flanges 3 are installed at both ends of the horizontal plexiglass cylinder 1, bottom flange reinforcements 4 are installed on the bottom flange 3, and a high-voltage introduction device is opened in the middle of the bottom flange 3 Hole 5, the two sides of horizontal plexiglass cylinder 1 wall are symmetrically connected with plexiglass tube 8, glass window 10 is arranged at the opening of plexiglass tube 8, quartz glass is installed in the center of glass window 10, and the side of horizontal plexiglass cylinder 1 wall is also Equipped with a humidity and air pressure regulating valve 9; a horizontal plexiglass cylinder 1 is equipped with a high-voltage electrode, and the horizontal plexiglass cylinder 1 is installed on an insulating support. It not only realizes the precise control of humidity and air pressure, but also applies AC and DC composite voltage to the high-voltage electrodes, and at the same time increases the applied voltage level and improves the operability of the experiment.

Description

technical field [0001] The invention belongs to the technical field of high-voltage experiments, and in particular relates to an experimental device for studying the influence of humidity and air pressure on the corona-initiation characteristics of high-voltage electrodes under compound voltage. Background technique [0002] The UHV DC transmission project currently under construction in my country has a large geographical span and a long transmission distance. Therefore, during the construction of ultra-high voltage transmission projects in China, the converter valve body in the valve hall of the converter station has both AC voltage and DC voltage components, and it is inevitable that due to the increase in altitude, the air pressure will decrease. And some unique problems caused by humidity changes. Regardless of the air pressure or humidity, it will have a certain impact on the corona discharge of the typical electrode for the valve in the converter valve body in the co...

AI Technical Summary

Problems solved by technology

At present, the experimental objects (high-voltage electrodes) in the laboratory are large in size and because of the need to apply an AC-DC composite voltage, two high-voltage introduction devices need to be installed

In order to ensure the electrical safety clearance between the two high-voltage introduction devices and the electrical safety clearance between the high-voltage introduction device and the experimental device, a larger experimental device is required, so the volume of the above-mentioned experimental device cannot meet the specific needs of the experiment.

In addition, the current experimental devices are basically equipped with only one door and the area of ​​the door is small, only one operator can be allowed to enter the operation, and the experimental objects cannot be directly placed inside the experimental device.

This leads to a longer time required for the construction of the experimental platform, and it is difficult to adjust the experimental platform, and the operability of the overall experimental device is poor.

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