Transformer oil paper humidified insulation drying device based on low-frequency current heating method

Abstract

The invention discloses a transformer oil paper humidified insulation drying device based on a low-frequency current heating method. The transformer oil paper humidified insulation drying device mainly comprises an outer frame and a low-frequency power supply box, wherein the low-frequency power supply box is fixedly installed on the left part of the top end of the outer frame; a vacuum pump is fixedly installed on the right part of the top end of the outer frame; a protective frame matched with the vacuum pump is fixedly installed on the right part of the top end of the outer frame; an assembly head is fixedly installed on the front side wall of the protective frame, and the assembly head communicates with an air inlet end opening of the vacuum pump in a guided mode; a control panel is installed on the right side wall of the protective frame; and auxiliary frames arranged at equal intervals are installed on the lower parts of the front inner wall and the rear inner wall of the outer frame. The transformer oil paper humidified insulation drying device is reasonable in structural design, and the transformer oil paper humidified insulation drying device can perform live drying and dehumidification operation of electrified low-voltage winding and is more economical compared with a traditional dehumidification device, the heating efficiency is very high, the time consumption is short, and the dehumidification effect is remarkable; and the device is more flexible while the stability is ensured; and on the premise of ensuring the normal operation of auxiliary equipment, the auxiliary equipment is stored in internal space, the space is fully utilized, and the transformer oil paper humidified insulation drying device is suitable for outdoor operation.

Description

technical field [0001] The invention relates to a transformer drying device, in particular to a transformer oil-paper insulation damp drying device based on a low-frequency current heating method. Background technique [0002] The insulation system of the transformer is a key factor affecting the reliable operation of the transformer, and the moisture content of the transformer insulation cardboard directly determines the reliability and service life of the transformer. If the water content in the insulating material is too high, on the one hand, it will reduce the insulation resistance of the transformer and reduce the insulation strength of the transformer, which will seriously affect the safe operation of the transformer; on the other hand, it will increase the loss, cause the transformer to heat up, and accelerate the aging of the insulating material. Reduced service life. [0003] Among the existing drying technologies, the vacuum drying and dehumidification technology...

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Problems solved by technology

If the water content in the insulating material is too high, on the one hand, it will reduce the insulation resistance of the transformer and reduce the insulation strength of the transformer, which will seriously affect the safe operation of the transformer; on the other hand, it will increase the loss, cause the transformer to heat up, and accelerate the aging of the insulating material. Reduced service life

[0003] Among the existing drying technologies, the vacuum drying and dehumidification technology has been eliminated by the times due to its super long heating time; the hot oil drying and dehumidification technology is greatly affected by the ambient temperature, transformer insulation thickness and voltage level, and is not suitable for large transformers On-site drying and dehumidification; in order to meet the requirements of large-scale transformer on-site drying and dehumidification, a new type of device for heating power supply in the on-site winding live drying and dehumidification technology is proposed; and in order to meet the outdoor working environment, the device needs to be easy to move, and needs to be used for auxiliary equipment. Good storage and protection of equipment such as wires; in order to ensure the normal operation of the work, it is necessary to carry a mobile power supply, so the stability of the portable power supply and the convenience of loading and unloading maintenance are also part of the research

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