On-site Drying Treatment Method of Converter Transformer

Abstract

The invention discloses a converter transformer and its on-site drying treatment method and on-site drying treatment equipment. The on-site drying treatment method includes vacuuming for 120 hours, vacuum oiling for 24 hours, hot oil circulation for 24 hours, high current heating and hot oil circulation for 24 hours, and heating after heating. The process of oil circulation for 36h and standing for 120h. In the present invention, after the oil is injected into the main body of the converter transformer, the thermal oil circulation treatment is performed for a certain period of time, and the thermal oil circulation treatment is heated by a large current, and then the thermal oil circulation is performed for a period of time, which can ensure that the moisture in the transformer oil and the insulating component components is discharged in time, Ensure that before the converter transformer is put into operation, the water content in the oil meets the requirements, and the insulation resistance value meets the requirements of the regulations, so as to ensure that there will be no excessive precipitation of water during the operation of the converter transformer, which will affect the operation of the transformer.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to a converter transformer, an on-site drying treatment method and on-site drying treatment equipment. Background technique [0002] At present, for the installation of domestic large-scale transformers, especially converter transformers, there is no complete process for the oil filling process and on-site drying treatment after oil filling. However, the converter transformer may bring moisture in the air during bushing installation, and there is no reliable drying measure to drain the moisture in the transformer oil and insulating components after oil filling. Moreover, important large-scale transformers will only carry out thermal oil circulation process measures for a certain period of time after installation, and the transformer will be put into operation without drying measures after the oil test passes the test. Internal discharge or even insulation breakdown occurs duri...

AI Technical Summary

Problems solved by technology

However, the converter transformer may bring moisture in the air during bushing installation, and there is no reliable drying measure to drain the moisture in the transformer oil and insulating components after oil filling

Moreover, important large-scale transformers will only carry out thermal oil circulation process measures for a certain period of time after installation, and the transformer will be put into operation without drying measures after the oil test passes the test. Internal discharge or even insulation breakdown during commissioning or operation

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