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Device for in-line intelligent monitor and diagnosis of dissolved gas and its method

An intelligent monitoring and dissolved gas technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems that the effectiveness and advantages of the gas analysis method in oil cannot be fully utilized, the technical economy cannot adapt to the development of the power system, and the detection cycle is long.

Inactive Publication Date: 2004-08-04
CHONGQING UNIV
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Problems solved by technology

Although this device also achieves on-line analysis, it is only a simple deformation of the conventional oil chromatographic analysis method. It has not made fundamental changes from the conventional chromatographic analysis method in terms of oil and gas separation and gas detection. From oil sampling to analysis, the operation The procedure is complicated, the time and cost are high, and it cannot meet the needs of the development of the power system in terms of technology and economy; the detection cycle is long, and the latent faults cannot be found in time and the development trend can be effectively tracked; due to the above reasons, the gas in oil cannot be fully utilized Validity and benefits of analytics

Method used

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  • Device for in-line intelligent monitor and diagnosis of dissolved gas and its method
  • Device for in-line intelligent monitor and diagnosis of dissolved gas and its method
  • Device for in-line intelligent monitor and diagnosis of dissolved gas and its method

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Embodiment Construction

[0082] The gas component before entering the gas separation column [12] in the incubator [22] is H 2 , CO, CH 4 、C 2 h 4 、C 2 h 2 、C 2 h 6 The mixture of six gases is then separated into two groups of gas components, and the first group of gas components H flows out first 2 , CO, CH 4 The mixture, and then out of the second group of gas components C 2 h 4 、C 2 h 2 、C 2 h 6 The mixture, the intermediate interval time is 30S-40S minutes; H 2 , CO, CH 4 A mixture of 1 # 1 group of sensors [30] in the detection room [16] detect; 1 group of sensors is detected by MS 1 , MS 2 , MS 3 Composed of three sensors, corresponding to the detection of H 2 , CO, CH 4 Three gases; MS 1 The type gas sensor is based on the principle of a semiconductor gas sensor with a change in resistance. On a substrate coated with metal tin oxide semiconductor, a certain proportion of metallic silver (2%~5%) is added. 2 、C 2 h 4 The selectivity is extremely high, while for CO, CH 4 、C...

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Abstract

A method for in-line intelligent monitor and diagnosis of the gas dissolved in the oil filled in electric equipment includes in-line intelligent monitor method and failure diagnosis method. Its apparatus is composed of oil-gas separator, gas detector connected to oil-gas separator, and microcomputer controlled diagnosis mechanism connected with the gas detector. Its advantages are in-situ monitor and diagnosis, high sensitivity and accuracy, high anti-interference power and short monitor period.

Description

Technical field: [0001] The invention relates to a device and method for on-line intelligent monitoring and fault diagnosis of dissolved gas in the oil of oil-filled electrical equipment, especially for on-line intelligent monitoring and fault diagnosis of dissolved gas in transformer oil. Background technique: [0002] Oil-immersed electrical equipment, especially transformers, are not only the most important and expensive equipment in the power system, but also one of the equipment that causes the most accidents in the power system. and predictive maintenance strategies based on online monitoring. For oil-filled electrical equipment, such as large-scale power transformers, oil is mostly used for insulation and heat dissipation. Transformer oil and solid organic insulating materials in oil (paper and cardboard, etc.) will gradually deteriorate under the operating voltage due to various factors such as electricity, heat, oxidation and local arc, and crack into low-molecular ...

Claims

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Application Information

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IPC IPC(8): G01N27/00G01N27/12
Inventor 孙才新陈伟根廖瑞金杜林唐炬李剑司马文霞陈明英
Owner CHONGQING UNIV
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