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Determination method for components of SF6 gas equipment fault melts

A technology for equipment failure and component determination, which is applied in the direction of measuring devices, material separation, and material analysis, can solve problems such as neglect of faulty melts, low content of faulty melts, and difficulties in quantitative analysis of components of SF6 gas equipment faulty melts, etc. Achieving an effect that is helpful for daily maintenance

Active Publication Date: 2014-03-26
GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Such a fault analysis process ignores the fault information contained in the fault melt of SF6 gas equipment, which may lead to misjudgment of the cause of the fault
However, since the gas discharge in the GIS gas chamber is a very complicated physical process, the composition of the melted product of SF6 gas equipment failure is also relatively complex, especially the content of the melted product of some SF6 gas equipment failure is very low, and it is difficult to determine SF6 with a single analysis method. The content of various substances in the melt of gas equipment failure requires the comprehensive use of several analysis methods to accurately determine the composition of the melt of SF6 gas equipment failure, which brings certain difficulties to the quantitative analysis of the composition of the melt of SF6 gas equipment failure
And because the power industry has long neglected the SF6 gas equipment failure melt, there is currently a lack of an effective method for analyzing the components of the SF6 gas equipment failure melt

Method used

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  • Determination method for components of SF6 gas equipment fault melts
  • Determination method for components of SF6 gas equipment fault melts
  • Determination method for components of SF6 gas equipment fault melts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this example, the fault melt of SF6 gas equipment is taken from a substation GIS interval switch gas chamber

[0039] A kind of SF6 gas equipment failure melt composition determination method, the specific steps are as follows (please refer to figure 1 ):

[0040] A. Sample pretreatment:

[0041] Take the SF6 gas equipment failure melt sample and dry it in an oven to obtain sample 1;

[0042] B. Qualitative and semi-quantitative analysis:

[0043] B1. Use EDS energy spectrometer to conduct element analysis test on sample 1 to determine the type and relative content of elements in sample 1. The process parameters of the element analysis test are: electron beam diameter: 5-10cm; tungsten wire electron gun thermal electron current intensity : 20keV; 1 ~ 30kV high voltage acceleration; cold finger position ≥ 40mm; distance ≥ 16mm; emission angle ≥ 35°, the results are as follows:

[0044]

[0045] B2, utilize X-ray diffraction spectrometer to test sample 1, determin...

Embodiment 2

[0055] In this example, the fault melt of SF6 gas equipment is taken from the GIS interval switch gas chamber of a certain substation.

[0056] A kind of SF6 gas equipment failure melt composition determination method, concrete steps are as follows:

[0057] A. Sample pretreatment:

[0058] Take the SF6 gas equipment failure melt sample and dry it in an oven to obtain sample 1;

[0059] B. Qualitative and semi-quantitative analysis:

[0060] B1. Use EDS energy spectrometer to conduct element analysis test on sample 1 to determine the type and relative content of elements in sample 1. The process parameters of the element analysis test are: electron beam diameter: 5-10cm; tungsten wire electron gun thermal electron current intensity : 20keV; 1 ~ 30kV high voltage acceleration; cold finger position ≥ 40mm; distance ≥ 16mm; emission angle ≥ 35°, the results are as follows:

[0061]

[0062] B2, utilize X-ray diffraction spectrometer to test sample 1, determine the compound ...

Embodiment 3

[0072] In this example, the fault melt of SF6 gas equipment is taken from a substation GIS interval switch gas chamber

[0073] A kind of SF6 gas equipment failure melt composition determination method, the specific steps are as follows (please refer to figure 2 ):

[0074] A. Sample pretreatment:

[0075] Take the SF6 gas equipment failure melt sample and dry it in an oven to obtain sample 1;

[0076] B. Qualitative and semi-quantitative analysis:

[0077] B1. Use EDS energy spectrometer to conduct element analysis test on sample 1 to determine the type and relative content of elements in sample 1. The process parameters of the element analysis test are: electron beam diameter: 5-10cm; tungsten wire electron gun thermal electron current intensity : 20keV; 1 ~ 30kV high voltage acceleration; cold finger position ≥ 40mm; distance ≥ 16mm; emission angle ≥ 35°, the results are as follows:

[0078]

[0079] B2, utilize X-ray diffraction spectrometer to test sample 1, deter...

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Abstract

The invention discloses a determination method for components of SF6 gas equipment fault melts. The determination method comprises the specific steps: A, pre-treating a sample; B, qualitatively and semi-quantitatively analyzing, namely determining sample varieties and corresponding contents in the sample by using an EDS (Energy Dispersive Spectroscopy) and determining chemical group varieties in the sample by using an X-ray diffraction spectroscopy; and C, quantitatively analyzing, namely carrying out an ICP (Inductively Coupled Plasma) test to determine the content of cations in the sample and carrying out an IC (Integrated Circuit) test to determine the content of anions in the sample. According to the determination method for the components of the SF6 gas equipment fault melts, the SF6 gas equipment fault melts can be qualitatively and quantitatively analyzed by organically combining an EDS test, an XRD (X-Ray Diffraction) test, the ICP test and the IC test; the components of the SF6 gas equipment fault melts can be accurately determined so as to be good for analyzing an electrical equipment fault and guiding the operation and the daily maintenance of equipment.

Description

technical field [0001] The invention relates to a composition determination method, in particular to a composition measurement method of SF6 gas equipment failure melt. Background technique [0002] GIS (SF6 gas equipment) is an important equipment in the power grid, and the safety of GIS equipment operation is related to the operation safety of the entire system. In recent years, due to the decline in the quality of GIS, short-circuit faults have occurred frequently recently. When a discharge fault occurs in the GIS, an arc will be generated at the flashover, and the arc energy will cause the SF6 gas in the gas chamber to react with the trace moisture in the equipment, electrodes and solid insulating materials to produce decomposition products. The reaction products mainly include H 2 S, SO 2 , CO, SOF 2 Other gas impurities, as well as some solid powder impurities (that is, SF6 gas equipment failure melt). The most closely related to failure is the composition of gas i...

Claims

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Application Information

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IPC IPC(8): G01N21/71G01N23/20G01N27/62G01N30/02
Inventor 黄青丹宋浩永陆国俊王勇王劲黄慧红张德智赵崇智刘静徐诗颖吴培伟李聃戴月容林满堂裴利强吕慧媛李助亚练穆森
Owner GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD
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