An online detection method for dissolved gas in transformer oil

A technology of dissolved gas and dissolved gas in oil, which is applied in the field of laser spectrum measurement, can solve problems such as inability to measure in real time, and achieve the effects of overcoming inability to measure in real time, cost saving, and accurate detection
CN104165880BInactive Publication Date: 2016-09-21STATE GRID CORP OF CHINA +1
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2016-09-21
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

An online detection method for dissolved gas in transformer oil, which can qualitatively analyze dissolved gas in transformer oil based on the real-time laser-induced plasma and laser Raman spectral characteristics of the gas separated from transformer oil. Carry out laser transmission and signal collection, the device is portable, through the time-sharing sharing of light transmission fiber and signal collection fiber, and sharing other optical components in the spectrum analyzer except the Rayleigh filter, the number and volume of the system components are reduced, saving energy cost, and can overcome the shortcomings of traditional off-line measurement methods that cannot be measured in real time.
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Description

technical field

[0001] The invention relates to an online detection method for dissolved gas in transformer oil, belonging to the technical field of laser spectrum measurement. Background technique

[0002] The transformer is an important equipment in the power system, and its safe and reliable operation determines the normal operation of the entire power supply network. It is an important means to ensure the normal operation of the power grid to detect the status of large transformers in real time so as to eliminate their possible faults as soon as possible. Transformer oil is very important to ensure the normal operation of the transformer. It acts as a heat sink when the transformer is running, insulates the transformer windings, and suppresses arcs at the high-voltage contacts.

[0003] Common hidden faults of transformers include thermal faults and discharge faults. These two types of faults will cause the insulation medium to crack and produce various gases. When the...

Claims

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