Switch cabinet condensation simulation device

Abstract

The invention relates to the field of power and electronics, and discloses a switch cabinet condensation simulation device. The switch cabinet condensation simulation device mainly comprises a box body made of an insulating plate, an exhaust fan arranged on the box wall of the upper part of the box body, a heater arranged at the lower part in the box body, a humidification pipe laid on the bottom in the box body, a louver arranged on the box wall of the box body, a plurality of temperature sensors and humidity sensors arranged in the box body, an insulator and a metal mesh both fixed in the box body, and a central processing system including a central processing unit, a temperature control module, a humidity control module and a display module. The switch cabinet condensation simulation device provided by the invention can simulate different conditions, such as large atmospheric humidity, strong exhaust opening or closing of a high pressure chamber, internal heating of the switch cabinet, large indoor humidity and the like, studies whether condensation exists on the composite insulator and the metal mesh in the switch cabinet under different conditions, thereby providing specific test data for power supply units in taking effective measures for preventing condensation and switch explosion.

Description

technical field [0001] The invention relates to the field of power electronics, in particular to a condensation simulation device for a switch cabinet. Background technique [0002] For the switch cabinet, when the surface temperature of the metal parts in the cabinet drops below the dew point temperature, water droplets will form on the metal surface. This phenomenon becomes condensation. Whether condensation occurs depends on the ambient temperature, the temperature inside the cabinet, relative humidity, and dew point temperature. It is determined by several variables. The dew point temperature means that in the air at a certain temperature, the maximum content of water vapor becomes "saturated water vapor", and the air at this time becomes "saturated air". When the temperature of the saturated air drops, the water vapor in the air will condense into water droplets , the saturation temperature of air containing water vapor, becomes the dew point temperature. The factors ...

AI Technical Summary

Problems solved by technology

In order to pursue the goal of compact structure and small space occupation, this type of switchgear often adopts methods such as adding insulating sleeves or insulating partitions, resulting in the air net insulation distance between charged bodies in the cabinet being lower than the status quo required by the State Grid Corporation of China and related regulations.

In this case, if there is condensation in the cabinet, the probability of explosion damage to the switch cabinet will be greatly increased

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