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Sulfur hexafluoride discharge decomposed gas component analysis system and its usage method

A technology for sulfur hexafluoride and component analysis, which is applied in the fields of analysis of materials, material separation, and preparation of samples for testing, etc. It can solve the problem of unstable gas components, difficulties in qualitative and quantitative discharge decomposition gases, and complex components of discharge decomposition gases. and other problems, to achieve the effect of good applicability and good sealing performance

Inactive Publication Date: 2007-10-24
CHONGQING UNIV
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Problems solved by technology

However, for GIS internal SF 6 The research on the detection and analysis of discharge decomposition gas is still in its infancy
On the one hand, the use of adsorbents and desiccants, the diffusion effect of decomposed gas in the gas chamber, and the randomness of gas sampling positions in the actual GIS all have adverse effects on the accurate determination of the concentration of decomposed gas components; on the other hand, SF 6 Discharge decomposition gas components are complex, many of which are very unstable, making it difficult for SF 6 The qualitative and quantitative analysis of discharge decomposition gas becomes very difficult

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  • Sulfur hexafluoride discharge decomposed gas component analysis system and its usage method
  • Sulfur hexafluoride discharge decomposed gas component analysis system and its usage method
  • Sulfur hexafluoride discharge decomposed gas component analysis system and its usage method

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Embodiment Construction

[0022] Sulfur hexafluoride discharge decomposition gas component analysis system and its use method, its PD detection method is: adjust the voltage regulator console 1, slowly increase the experimental voltage, first measure the maximum externally applied experimental voltage and the initial PD voltage, Then apply the initial PD voltage U st1.2 to 1.5 times the voltage, the GIS simulation experiment device will generate PD, and the PD will cause voltage pulses to be generated at both ends of the non-inductive detection impedance 7. The voltage pulses are connected to the high-speed digital storage oscilloscope 9 through the signal cable, and sent to the computer for storage. fault diagnosis and pattern recognition; the detection method of the decomposition gas excited by PD is as follows: 10 minutes after the discharge test is completed, the sampling valve 32 is slightly opened to allow the decomposition gas to pass into the sampling bag, and after the sampling bag is slightly ...

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Abstract

A sulfur hexafluoride discharge decomposition gas component analysis system is composed of a pressure adjuster console 1, an insulation transformer 2, a non-blooming test transformer 3, a non-local-discharge protective resistance 4, a capacitor bleeder 5, a sulfur hexafluoride discharge decompose device 6, a non-inductive check resistance 7, a match resistance 8, an oscillometer 9, and a gas spectrometer 10. And the method comprises that (1), using a vacuum pump 18 to vacuum the sulfur hexafluoride discharge decompose device 6, (2), using an inlet needle valve 17 to feed SF6 gas into the sulfur hexafluoride discharge decompose device 6, (3), measuring maximum external test voltage and initial PD voltage, (4), generating PD under different electrodes, (5), collecting gas, (6), analyzing gas components, (7), collecting PD pulse signal wave shape, diagnosing accident and recognizing mode. The invention has wide application in research, teach, academy and industry, used in theory analysis and research of PD online state check of GIS device.

Description

technical field [0001] The present invention relates to sulfur hexafluoride (SF 6 ) gas discharge decomposition, partial discharge experiment and gas component detection, in particular to a sulfur hexafluoride discharge decomposition component analysis system and its application method. Background technique [0002] GIS adopts SF 6 As a gas insulating medium, it has the advantages of high dielectric strength, stable operation, small footprint and small maintenance workload, and is widely used in the construction and renovation of large and medium-sized cities. However, judging from the operation situation in recent years, many problems have appeared in the use of GIS at home and abroad, among which insulation faults are the main ones. Insulation faults generally manifest initially as intermittent partial discharges (PD), which in turn cause SF 6 Gas breaks down. to SF 6 There are corresponding national and international standards for the detection of decomposition gas, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N1/28
Inventor 唐炬张晓星孙才新杜林李剑万凌云
Owner CHONGQING UNIV
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