Fiber bragg grating (FBG) sensor based transformer fault gas monitoring system

A technology of transformer faults and fiber gratings, which is applied in the direction of instruments, measuring electronics, and measuring devices, can solve the problems of carrier gas or chromatographic column consumables, gas selectivity, and low monitoring sensitivity, so as to solve the problems of slow oil-gas separation balance, Good for long-term monitoring and high-resolution effects
CN102033041BActive Publication Date: 2013-03-20NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Patent Information

Authority / Receiving Office
CN Ā· China
Patent Type
Patents(China)
Current Assignee / Owner
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Publication Date
2013-03-20

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Abstract

The invention discloses a fiber bragg grating (FBG) sensor based transformer fault gas monitoring system in the technical field of on-line monitoring system. The system comprises a gas sensor array, FGG demodulation equipment, a transformer fault monitoring center and the like. In the system, an FBG sensor is adopted, and the FBG sensor has strong anti-electromagnetic interference and is beneficial to application to environment with extremely severe electromagnetic environment; the sensor has high sensitivity and high resolution and can be used for simultaneously detecting all parts of the transformer on line, thereby the system maintenance cost is greatly reduced; and the system solves a series of problems of cross sensitivity among gases, slow oil-gas separation and balancing, short breathable film service life, and the like in the traditional fault monitoring method.
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Description

technical field

[0001] The invention belongs to the technical field of an online monitoring system, in particular to a transformer fault gas monitoring system based on a fiber Bragg grating sensor. Background technique

[0002] As the key equipment in the operation of the power grid, the reliability of the power transformer is particularly important in the operation of the power grid.

[0003] By monitoring and analyzing the gas dissolved in the oil, latent faults inside the transformer can be discovered as early as possible, and the development and changes of the faults can be grasped at any time. However, the traditional monitoring method needs to go through the steps of sampling, oil and gas separation, component monitoring, and data processing for each monitoring. The process of oil and gas separation is greatly affected by human beings, and the monitoring results are inaccurate. This monitoring technology belongs to an off-line monitoring method. The whole monitoring p...

Claims

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