Multichannel sulfur hexafluoride insulating electric equipment online monitoring device and method

An electrical equipment, sulfur hexafluoride technology, applied in the field of multi-channel sulfur hexafluoride insulated electrical equipment on-line monitoring device, can solve the problems of low device reusability, environmental pollution, high cost, etc.

Active Publication Date: 2015-05-06
STATE GRID CORP OF CHINA +2
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Problems solved by technology

However, none of the above technologies can realize that a single monitoring device can control multiple SF 6 On-line monitoring of decomposition products of insulating electrical equipment, so the reusability of the device is low, the cost is high, and the gas cannot be recycled during the detection process, causing environmental pollution and not economical

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  • Multichannel sulfur hexafluoride insulating electric equipment online monitoring device and method
  • Multichannel sulfur hexafluoride insulating electric equipment online monitoring device and method

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Embodiment Construction

[0049] Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0050] Such as Figure 1-2 A multi-channel sulfur hexafluoride insulated electrical equipment on-line monitoring device is shown, including a sampling detection gas circuit system 24 and a monitoring host 25, and the sampling detection gas circuit system 24 includes SF 6 Purity detection unit 19, the first SO 2 Concentration detection unit 20, the second SO 2 Concentration detection unit 21, the third SO 2 Concentration detection unit 22, common air return channel 23, also includes first interface switching valve 2.1, second interface switching valve 2.2, third interface switching valve 2.3, first filter 3.1, second filter 3.2, third filter 3.3, the first three-way 4.1, the second three-way 4.2, the third three-way 4.3, the fifth three-way 4.5, the sixth three-way 4.6, the first solenoid valve 5.1, the second solenoid valve 5.2, the third solenoid val...

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Abstract

The invention discloses a multichannel sulfur hexafluoride insulating electric equipment online monitoring device and method. Through setting a common SF6 purity detection room, a common gas return channel and three independent SO2 detection rooms, the online detection of SF6 insulating electric equipment decomposition products is realized, the detection correctness is ensured, the gas mixing among different equipment is avoided, the reliability of the system is improved, the cost is reduced and the reusability of the system; a recycle gas circuit design manner is adopted, the detected sample gas is sent back to the SF6 insulating electric equipment so that the gas loss and the pollution to the air are decreased. Moreover, through a pressure sensor in a sampling and detection gas circuit, the self-diagnosis of the state of an electromagnetic valve in the sampling and detection gas circuit can be realized according to the change of pressure value, so that the reliability of the multichannel sulfur hexafluoride insulating electric equipment online monitoring device is improved.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of power transmission and transformation equipment, in particular to a multi-channel on-line monitoring device and method for sulfur hexafluoride insulated electrical equipment. technical background [0002] SF based on component detection method 6 Sulfur hexafluoride insulated electrical equipment insulation state detection technology is a research hotspot and difficulty. 6 The detection methods of insulating electrical equipment components mainly include detection tube method, gas chromatography, chromatography-mass spectrometry, electrochemical method and photoacoustic spectroscopy. The first three methods are mainly used for laboratory detection, and the latter two methods can be used On-site detection and online monitoring. [0003] At present, domestic companies have developed SF based on electrochemical methods. 6 Gas decomposition analyzer can be used for field test. For exa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/00G01N27/26G01N33/00
Inventor 史会轩王龙华钱进张潮海刘晓波刘晓丽覃兆宇乐文静段守胜王磊
Owner STATE GRID CORP OF CHINA
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