Device for gas pressure online monitoring and automatic air compensation of transformer

Abstract

The present invention relates to a device for gas pressure online monitoring and automatic air compensation of a transformer. The device is connected between a gas storage device and a transformer tank, and comprises a pressure detection device, a pressure regulation device and a control unit; the pressure regulation device includes a gas pipeline connected between the gas storage device and the transformer tank; the gas pipeline is connected with a decompression barostat, a filling solenoid and a pressure relief valve in order; and the decompression barostat, the filling solenoid and the pressure relief valve are electrically connected with the control unit. The device for gas pressure online monitoring and automatic air compensation of a transformer avoids the deficiency of a traditional air admission device, realizes the online monitoring of the pressure state of a gas cylinder and a transformer tank, obtains the operation information of the air admission device in real time and realize real-time display, real-time uploading, real-time alarm, real-time publishing and the like so as to ensure the reliability of the transformer and save the manpower.

Description

Technical field [0001] The invention belongs to a transformer gas supplement device, and in particular relates to a device for performing online gas pressure monitoring and automatic gas supplementation on a transformer. Background technique [0002] As the voltage level of the transformer increases, the capacity continues to increase, and the weight of the body increases accordingly. In order to reduce the transportation weight, large transformers often use dry air or high-purity nitrogen transportation. In order to prevent the transformer from entering moisture due to nitrogen or dry air leakage during transportation, so that the body is damp, and the insulation strength of the transformer is reduced, a certain positive pressure (usually 20 ~ 30kPa) must be maintained in the oil tank. In addition, the gas pressure will also change with the change of the ambient temperature. If the gas pressure in the fuel tank is too high, the fuel tank may be deformed, causing the fuel tank to...

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Problems solved by technology

[0003] The traditional transformer storage and transportation process monitoring only has a pressure balance gas supply device, which is an offline state monitoring. The engineering escort cannot obtain monitoring information in real time, and the operating status informatio...

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