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On-site Drying Treatment Method of Converter Transformer

A converter transformer and drying treatment technology, applied in the field of transformers, can solve the problems of insulation breakdown, moisture discharge without reliable drying measures, internal discharge of the transformer, etc., and achieve the effect of avoiding deterioration, cost and time control advantages.

Active Publication Date: 2016-08-17
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

Method used

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  • On-site Drying Treatment Method of Converter Transformer
  • On-site Drying Treatment Method of Converter Transformer
  • On-site Drying Treatment Method of Converter Transformer

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Embodiment Construction

[0034] The invention provides a converter transformer and its on-site drying treatment method and on-site drying treatment equipment, which relate to the drying treatment process of the insulating oil and internal components during and after the oil filling process of the converter transformer. The moisture intruded into the transformer during the installation process ensures that no external moisture is brought into the insulating oil during the oil filling process, and it has the function of reducing the water content in the insulating oil and separating out the moisture in the insulating parts.

[0035] In order to make the object, technical solution and effect of the present invention more clear and definite, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present inven...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/28H01F27/14F26B7/00F26B9/00
Inventor 伍衡李士杰梁晨陈蔚夏谷林周海滨白彦翠张新波刘畅宋作森
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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