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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

Inactive Publication Date: 2016-09-21
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0006] In order to overcome the shortcomings of traditional off-line measurement methods that cannot be measured in real time, the present invention discloses an online detection method for dissolved gas in transformer oil. According to the real-time laser-induced plasma and laser Raman spectrum characteristics of the gas separated from transformer oil, it can Qualitative Analysis of Dissolved Gases in Transformer Oil

Method used

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  • An online detection method for dissolved gas in transformer oil

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Embodiment Construction

[0020] The specific embodiment of the present invention is as figure 1 shown.

[0021] The online detection system for dissolved gas in transformer oil in this embodiment consists of a gas separation part, an optical part, and an online control and analysis part. The gas separation part includes a gas permeable membrane 3, a gas conduit 4, an electromagnetic valve 5, an air pump 6, and a gas chamber 7; Spectrum analyzer 24 and other auxiliary optical components, etc. The online control and analysis part includes a control box 16 and a computer host 21; the control box 16 is composed of a time-sharing controller 17, a Rayleigh filter controller 20, a valve controller 18, and an air pump controller 19. The host computer 21 controls the four controllers in the control box through the control software; obtains the spectrum signal of the spectrum analyzer 24 through the spectrum analysis software and performs gas analysis.

[0022] A small opening is opened in the transformer oi...

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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.

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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Application Information

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IPC IPC(8): G01N21/65G01N21/73
Inventor 万雄
Owner STATE GRID CORP OF CHINA
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