Sleeve flashover characteristic measuring device considering humidity influence

Abstract

The invention relates to the technical field of electrical insulation detection, in particular to a sleeve flashover characteristic measuring device considering humidity influence, which comprises a high-voltage sleeve, a humidity adjusting device, an air suction device, a humidity detection device, a power supply device and a temperature control device, the high-voltage bushing comprises a capacitor core, an outer shell and a bushing flange; the humidity adjusting device comprises a moisture adding chamber and a gas adding chamber; the humidity detection device comprises a moisture collection chamber and a moisture sensing device; the power supply device comprises a conducting rod and a high-voltage power supply; the temperature control device covers the high-voltage bushing, the moisture adding chamber and the moisture collecting chamber respectively; the device is used for solving the problem of poor gas humidity regulation and control flexibility in the prior art, can flexibly regulate and control the gas humidity, is simple and convenient to operate, is high in detection efficiency, can effectively prevent moisture from condensing on the inner wall of equipment, reduces the damage to the equipment, and improves the accuracy of the measurement of the flashover characteristic of the sleeve.

Description

technical field [0001] The invention relates to the technical field of electrical insulation detection, in particular to a casing flashover characteristic measuring device considering the influence of humidity. Background technique [0002] The high-voltage bushing is used to pass the current-carrying conductor through the metal box or valve hall wall of the equipment with different potentials in the power transmission and transformation project, and introduce or draw out the full voltage and full current, which plays the role of insulation and support. The high-voltage bushing is the guarantee It is one of the key equipments for the safe and stable operation of the power system. However, in recent years, equipment failures have occurred frequently due to the insulation failure of the gas-solid interface inside the casing, and the damping of the insulating gas is one of the important reasons for the reduction of the insulation strength of the casing. [0003] In the existin...

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Problems solved by technology

However, in recent years, equipment failures caused by the failure of the gas-solid interface insulation inside the bushing have occurred frequently, and the dampness of the insulating gas is one of the important reasons for the reduction of the insulation strength of the bushing.

[0003] In the existing experimental research on the influence of humidity on the flashover characteristics of bushings, the operator needs to configure the insulating gas with corresponding humidity according to different humidity conditions, and the insulating gas with different humidity needs to be replaced when testing under different humidity conditions, resulting in The operation is cumbersome and complicated, the control flexibility is poor, and the detection efficiency is low; at the same time, the moisture used to adjust the gas humidity tends to condense and remain on the inner wall of the equipment, which cannot effectively diffuse into the gas, easily damages the equipment, and affects the flashover characteristics of the casing measurement accuracy

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