A device and method for measuring the gas diffusion velocity of transformer fault characteristics

Abstract

A device and method for measuring the gas diffusion velocity of transformer fault characteristics. The device includes a test container, a heating and temperature control system, a vacuum degassing and dehydration system, a gas injection sealing system and a cylinder. The test container is connected to degas and dehydrate the transformer oil. The heating and temperature control system is connected to the test container. The gas injection end of the test container is connected to the gas injection sealing system. The cylinder is connected to the test container through the circulation pipeline. The cylinder is divided into two chambers. , the upper chamber is an air chamber, and the lower chamber is an oil chamber. The oil chamber is connected through a circulating pipeline test container. The oil chamber accommodates the transformer oil to be tested that has been degassed and dehydrated by vacuum. The chamber provides a certain pressure of air through the combination of the transformer fault characteristic gas injection sealing system and the cylinder, which solves the problem of sealing and sampling the transformer oil after vacuum degassing and dehydration when studying the transformer fault characteristic gas diffusion rate measurement.

Description

technical field [0001] The invention provides a device and a method for measuring the gas diffusion velocity of transformer fault characteristic, belonging to the technical field of transformer oil detection. Background technique [0002] When electrical equipment such as transformers are out of the factory or in operation, when overheating or partial discharge occurs, the transformer oil will produce characteristic gases such as hydrogen, acetylene, and carbon dioxide. The corresponding relationship of faults (three-ratio method) and the formation of standards, such as IEC60599 and GB / T7252 standard "Guidelines for Analysis and Judgment of Dissolved Gas in Transformer Oil", the operation technicians of transformers and other electrical equipment manufacturers or power industry Dissolved gas analysis data can be used to judge the operating state of the transformer, but this method cannot judge the specific location of the fault point. Multi-point sampling and analysis of th...

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Problems solved by technology

[0002] When electrical equipment such as transformers leave the factory or operate due to overheating or partial discharge failures, the transformer oil will produce characteristic gases such as hydrogen, acetylene, and carbon dioxide. The corresponding relationship of faults (three-ratio method) and form a standard, such as the IEC60599 and GB / T7252 standards "Guidelines for the Analysis and Judgment of Dissolved Gas in Transformer Oil", the operation technicians of transformer and other electrical equipment manufacturers or power industry through the transformer oil The dissolved gas analysis data can be used to judge the operation status of the transformer, but this method cannot judge the specific location of the fault point

Multi-point sampling and analysis of the characteristic fault characteristic gas dissolved in the transformer oil to judge the fault point is a new method proposed by the technicians of the transformer manufacturer in recent years to judge the fault point of the factory transformer, but there is a lack of fault characteristic gas in the transformer oil. Basic data on the diffusion rate of

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