Nitrogen and oxygen detection unit and method based on self-produced gas source

Abstract

The invention discloses a nitrogen and oxygen detection unit and method based on a self-produced gas source. The nitrogen and oxygen detection unit comprises a detector part, a characteristic gas emptying part, a gas sampling and sample injection part, a gas flow rate control part and a carrier gas generation module, the detector part is used for separating and calculating the concentration of nitrogen, oxygen and other characteristic gases; the characteristic gas emptying part is used for exhausting residual characteristic gas in a gas path before each work; the gas sampling and sample injection part is used for providing oxygen, nitrogen and other characteristic gas components separated from an oil sample in the transformer for the detector part; the gas flow rate control part and the carrier gas generation module provide high-purity air as carrier gas for the detector part. According to the method, the self-produced gas source is adopted, the safety requirement is met, meanwhile, the operation efficiency and stability of the oil chromatography device of the extra-high voltage transformer substation are improved, and effective guarantee is provided for safe operation of the transformer substation.

Description

technical field [0001] The invention relates to the field of electrical engineering, in particular to a nitrogen and oxygen detection unit and method based on a self-produced gas source. Background technique [0002] In recent years, the power industry has higher and higher requirements for the safety of operating equipment. As the main equipment for power transmission, large-scale transformers are one of the key factors for the safe operation of power systems. Especially the UHV transformer, due to its complex structure, will face a more severe form in the operation of the transformer than the ordinary substation. Once the equipment failure is not isolated in time, it will lead to the expansion of the accident, the grid shock or even the decommissioning, and the large-scale power outage will be serious. Affect the daily work and life of residents. Therefore, the safety and reliability of its main transformer and high-voltage reactor have become the focus of power grid oper...

AI Technical Summary

Problems solved by technology

At present, the oil chromatography devices used in UHV substations on the market have problems such as low nitrogen and oxygen detection accuracy, poor airtightness of the pressure reducing valve at the gas cylinder interface, and high replacement cost of argon gas cylinders. The promotion of UHV substation oil chromatography devices and Great inconvenience for stable operation

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