Transformer bushing dielectric loss detection device correction system and method

Abstract

The invention discloses a transformer bushing dielectric loss detection device correction system and method. The transformer bushing dielectric loss detection device correction system comprises a standard correction source, a current sensor, a signal conditioning circuit and a dielectric loss synchronous acquisition card, the current sensor is connected with the signal conditioning circuit, and the signal conditioning circuit is connected with the dielectric loss synchronous acquisition card; the standard correction source comprises a voltage correction mode and a current correction mode; thestandard correction source comprises a first output end and a second output end. According to the invention, an external standard correction source is utilized; the fixed phase difference between thecurrent secondary measurement loop and the voltage measurement secondary loop is calculated by adjusting the output mode of the standard correction source; therefore, phase checking is carried out onthe transformer bushing dielectric loss detection device, when phase deviation is detected, the deviation is eliminated, the technical problem of low reliability of a measurement result caused by factors such as parameter change and aging of equipment is avoided, and the accuracy of monitoring data is effectively improved.

Description

technical field [0001] The invention relates to the technical field of transformer bushing dielectric loss detection devices, in particular to a calibration system and method for a transformer bushing dielectric loss detection device. Background technique [0002] Transformer bushings are important supporting and insulating equipment for transformers. The insulation condition of bushings is related to the safe and stable operation of the entire transformer. Therefore, the monitoring of bushing insulation status is particularly important in current engineering applications and scientific research. The on-line monitoring of the bushing mainly measures the dielectric loss tangent tanδ, which is a characteristic quantity reflecting the dielectric loss of the insulation. It only depends on the dielectric properties of the insulating material and has nothing to do with the size of the medium. Insulation integrity defects are very sensitive and insensitive to local defects. The on...

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Problems solved by technology

[0007] The present invention provides a transformer bushing dielectric loss detection device correction system and method, which are used to solve the problem of monitoring the dielectric loss test of transformer bushings in the prior art device, there is a technical problem of low reliability of the measurement results due to factors such as changes in the parameters of the equipment itself and aging

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