Impregnated paper capacitive oil-SF6 transformer bushing

Abstract

The invention discloses to an impregnated paper capacitive oil-SF6 transformer bushing. The impregnated paper capacitive oil-SF6 transformer bushing comprises an inner conduit and an outer metal pipe which is coaxially arranged on the outer side of the inner conduit, wherein both ends of the inner conduit are provided with a head connector and a tail connector respectively. The bushing adopts a double-conduit structure due to high current, and facilitates internal heat dissipation of the bushing; the main insulation adopts an epoxy impregnated paper insulation structure; and an insulated radial limiting device is designed between the double conduits, and the phenomenon that the current carrying heating of conductive tubes influences the insulation performance of epoxy resin dry capacitor cores is effectively prevented. According to the oil-SF6 impregnated paper capacitive transformer bushing, the blank of the research of 550 kv and more than 550 kv of domestic dry oil-SF6 bushings is filled up; the dependence of country on the imported dry bushing products is reduced; and the problems of sealing and current carrying of the ultra-high voltage epoxy impregnated bushing are solved, and the requirements of localization of the dry oil gas bushings are met.

Description

technical field [0001] The invention relates to the field of transformers and fully enclosed combined electrical appliances, in particular to a glue-impregnated paper capacitive oil—SF 6 Transformer bushing. Background technique [0002] Oil—SF 6 Transformer bushings are mainly used to combine oil-immersed transformers with SF 6 Totally Enclosed Combined Appliance or SF 6 The high-voltage bushing for electrical connection of the bus barrel plays the role of insulation and support. 1100kV / 3150A Oil-SF 6 Capacitive transformer bushing is one of the key accessories of 1100kV class fully enclosed combined electrical appliances and transformers, and its safe operation plays an important role in transformers and switches. [0003] With the increase of voltage and current levels, the application of fully enclosed combined electrical appliances is becoming more and more extensive, and oil-SF is used between the transformer and the switch 6 The bushing connection makes the elec...

AI Technical Summary

Problems solved by technology

[0003] With the increase of voltage and current levels, the application of fully enclosed combined electrical appliances is becoming more and more extensive, and oil-SF is used between the transformer and the switch 6 The bushing connection makes the electrical equipment compact in structure, small in floor area, and simple in operation and maintenance; the country is currently constructing UHV power grids, but the domestic 1100kV / 3150A oil-SF 6 The development of rubber-impregnated paper capacitive transformer bushings has been blank

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