Gas insulating transformer

Abstract

The invention discloses a gas insulating transformer, which is composed of a gas tank, an iron core, a low voltage winding, a high voltage winding and an insulating medium, wherein the iron core is arranged in the gas tank; the low voltage winding and the high voltage winding are both sheathed on the iron core, the high voltage winding is arranged on the outer side of the low voltage winding, and the low voltage winding and the high voltage winding are separated by insulating materials; the insulating medium is purely gaseous SF6; the high voltage winding adopts a tangled-continuous structure, and the surfaces of the conductors of the low voltage winding and the high voltage winding are insulated and made of PET materials. The invention has favorable safety performance and small floor space; compared with the traditional power transformer, the invention lowers no-load loss by 20%, lowers no-load current by 30%, and lowers load loss by 10%; and compared with the transformer with the same volume, the invention lowers yearly operation cost by about 15% averagely and saves cost for enterprises.

Description

technical field [0001] The invention relates to the field of transformers and transformers, in particular to a gas-insulated transformer. Mainly used in 110KV high voltage substation. Background technique [0002] With the development of urban construction, the population of large and medium-sized cities is getting denser, and there are more and more high-rise buildings, underground passages and buildings. It is also getting higher and higher, and the power consumption has risen sharply. The original power transformers with a voltage level of 35KV and below can no longer meet the requirements, and the 110KV power supply system has become the preferred solution for regional power supply in large and medium-sized cities. At the same time, people have increasingly strict requirements on the safety, reliability, power quality and urban environmental protection of the power supply system, and pay special attention to factors such as fire prevention, explosion prevention, pollut...

AI Technical Summary

Problems solved by technology

At present, 110KV high-voltage substations have been directly built in urban centers and high-rise buildings. There are many safety hazards in ordinary oil-immersed power transformers, such as combustion and explosion, which seriously threaten the safety of people's lives and property, and oil leakage will also be serious. It pollutes the environment, and the noise of the oil-immersed transformer is high, and the substation occupies a large area. At present, the dry-type power transformer in the world can only achieve a voltage of 35KV and a capacity of 20,000KVA and below. have great difficulty

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