CN102967671B - Device and method for detecting sulfur hexafluoride gas in oil immersed transformer - Google Patents
Device and method for detecting sulfur hexafluoride gas in oil immersed transformer Download PDFInfo
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- CN102967671B CN102967671B CN201210478579.3A CN201210478579A CN102967671B CN 102967671 B CN102967671 B CN 102967671B CN 201210478579 A CN201210478579 A CN 201210478579A CN 102967671 B CN102967671 B CN 102967671B
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- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 41
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 79
- 239000012159 carrier gas Substances 0.000 claims abstract description 22
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 28
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 11
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 11
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 11
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- 229930195733 hydrocarbon Natural products 0.000 claims description 6
- 150000002430 hydrocarbons Chemical class 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract 3
- 238000012790 confirmation Methods 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000004868 gas analysis Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004870 electrical engineering Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000009610 hypersensitivity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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Abstract
The invention discloses a device and a method for detecting sulfur hexafluoride gas in an oil immersed transformer. The device comprises a carrier gas generator, an oil absorption column connected with the carrier gas generator, an A chromatographic column (4) and a B chromatographic column (6) which are respectively connected with the oil absorption column, an FID (flame ionization detector) connected with the A chromatographic column, and a TCD (Thermal Conductivity Detector) connected with the B chromatographic column, wherein a sample inlet is formed between the carrier gas generator and the oil absorption column. If suspecting the sulfur hexafluoride gas leaks into the transformer, a user can know the leakage condition of the sulfur hexafluoride gas simultaneously when analyzing the dissolved gas in the conventional oil, by taking an oil sample or a gas sample from the transformer by the device according to the method, and therefore a chromatographic instrument for the dissolved gas in the oil of the transformer and a special chromatographic instrument for the sulfur hexafluoride are prevented from being damaged, and especially the timely confirmation of the sulfur hexafluoride leaking into the transformer has significance for ensuring the safe and stable operation of the transformer.
Description
Technical field
The invention belongs to electrical engineering technical field, be specifically related to checkout equipment and the method for sulfur hexafluoride gas in a kind of oil-filled transformer.
Background technology
Transformer insulation oil and sulfur hexafluoride gas are the conventional insulating mediums of power industry; both can not use with; if but the insulating gas sulfur hexafluoride insulating oil side medium that bleeds in oil-filled transformer oil-gas casing; can cause transformer differential protection action or gas action, have a strong impact on device security stable operation.After this type of fault occurs, sulfur hexafluoride gas can be partially soluble in insulating oil medium, and other can enter in gas collector box.
Be dissolved in the sulfur hexafluoride gas in insulating oil, can degassedly deviate from together with hydrogen, alkane etc. by shaking, carrying out in conventional transformer dissolved gas analysis process, sulfur hexafluoride gas can cause devastating impact to the nickel reburner of gas chromatograph.And the collection of gas also inevitably can be brought insulating oil in gas collector box, in the time carrying out the detection of sulfur hexafluoride gas content in device in Gas, insulating oil can cause damageability impact to the chromatographic column in sulfur hexafluoride special color spectrometer again, and the method can not be analyzed the insulating oil characteristics of decomposition gas existing in device in Gas.Based on these two reasons, use conventional analysis instrument and method not only cannot carry out the judgement of sulfur hexafluoride gas seepage fault, but also can cause the damage of analytical instrument.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, for Gases Dissolved in Transformer Oil analytical chromatograph can not be used for sulfur hexafluoride gas analysis, sulfur hexafluoride special color spectrometer can not be used for the gas analysis of insulating oil characteristics of decomposition and the defect to insulating oil hypersensitivity, proposes a kind of Apparatus and method for that in oil-filled transformer, insulating oil characteristics of decomposition gas and sulfur hexafluoride gas detect simultaneously that can be used for.
In order to achieve the above object, technical scheme provided by the invention is:
In described oil-filled transformer, the checkout equipment of sulfur hexafluoride gas comprises carrier gas generating means, the oil suction post being connected with carrier gas generating means, the A chromatographic column being connected with oil suction post respectively and B chromatographic column, the fid detector being connected with A chromatographic column and the TCD detecting device being connected with B chromatographic column; Between described carrier gas generating means and oil suction post, be provided with injection port.
Wherein, described oil suction post is the WX-01 type oil suction post that Wuhan World Engineering Technology Co., Ltd. produces; Described A chromatographic column and B chromatographic column are packed column; The fixing fixing phase of w-01 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in described A chromatographic column, 1-5 meters of column lengths; The fixing fixing phase of w-03 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in B chromatographic column, 1-5 meters of column lengths.
A method that detects sulfur hexafluoride gas in oil-filled transformer based on the said equipment, comprises the steps:
(1) component of getting finite concentration and certain volume is the calibrating gas of sulfur hexafluoride, methane, ethane, ethene and acetylene; This calibrating gas can be commercially available, and its concentration and volume are decided by manufacturer production specification;
(2) adopt conventional gas chromatography analysis method, inject calibrating gas from injection port, under carrier gas mobilization, calibrating gas is divided into two-way after by oil suction post, and (two the gas in gas circuit is identical, obtain the testing result of gas with various by different processing and detection method), lead up to A chromatographic column separation of methane, ethane, ethene and four kinds of hydrocarbon components of acetylene, and determine peak time and peak height parameter by fid detector, realize the demarcation of methane, ethane, ethene and four kinds of hydrocarbon components of acetylene; The B chromatographic column of separately leading up to separates sulfur hexafluoride, and determines peak time and peak height parameter by TCD detecting device, realizes the demarcation of sulfur hexafluoride; Wherein, described carrier gas is nitrogen, and nitrogen can reach the effect that tested gas is separated and detected, and can serve as TCD, FID and detect optimum carrier, and flow rate of carrier gas is 1-30mL/mL; A chromatographic column and B chromatographic column column temperature are 50-80 DEG C; TCD detector temperature is 60-80 DEG C;
(3) adopt conventional method, from transformer oil to be measured, deviate from dissolved gas as sample gas, or take out methane gas as sample gas from the gas collector box of transformer to be measured; Get and the sample gas of step (1) same volume, according to the selected chromatographic condition of step (2) and step, sample gas component and content are analyzed, the one-tenth obtaining in sample gas is grouped into, particularly the content of sulfur hexafluoride in sample gas.
Wherein, described oil suction post is the WX-01 type oil suction post that Wuhan World Engineering Technology Co., Ltd. produces; Described A chromatographic column and B chromatographic column are packed column; The fixing fixing phase of w-01 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in described A chromatographic column, column length 1-5 rice; The fixing fixing phase of w-03 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in B chromatographic column, column length 1-5 rice.
Compared with prior art, beneficial effect of the present invention is:
There is sulfur hexafluoride gas seepage to enter the situation of transformer for suspection, adopt the inventive method can in analytic routines oil dissolved gas, understand the seepage situation of sulfur hexafluoride gas by getting transformer oil sample or device in Gas sample, avoid Gases Dissolved in Transformer Oil analytical chromatograph and the special chromatographic damage of sulfur hexafluoride, particularly confirm in time that sulfur hexafluoride gas seepage enters transformer for ensureing that transformer safe and stable operation is significant.
Brief description of the drawings
Fig. 1 is the structural representation of present device;
Fig. 2 is the analysis data plot that in the embodiment of the present invention, 1ml calibrating gas obtains;
Fig. 3 is the analysis data plot that in the embodiment of the present invention, 1ml sample gas obtains.
In Fig. 1,1-carrier gas generating means; 2-injection port; 3-oil suction post; 4-chromatographic column 1; 5-FID detecting device; 6-chromatographic column 2; 7-TCD detecting device.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Referring to Fig. 1, in described oil-filled transformer, the checkout equipment of sulfur hexafluoride gas comprises that carrier gas fills, 1, the oil suction post 3 being connected with carrier gas generating means 1, the A chromatographic column 4 being connected with oil suction post 3 respectively and B chromatographic column 6, the fid detector 5 being connected with A chromatographic column 4 and the TCD detecting device 7 being connected with B chromatographic column 6; Between described carrier gas generating means 1 and oil suction post 3, be provided with injection port 2.
Wherein, the WX-01 type oil suction post that described oil suction post 3 is produced for Wuhan World Engineering Technology Co., Ltd.; Described A chromatographic column 4 and B chromatographic column 6 are packed column; The fixing fixing phase of w-01 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in described A chromatographic column 4,1-5 meters of column lengths; The fixing fixing phase of w-03 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in B chromatographic column 6,1-5 meters of column lengths.
A method that detects sulfur hexafluoride gas in oil-filled transformer based on the said equipment, comprises the steps:
(1) get the calibrating gas that 1mL component is sulfur hexafluoride, methane, ethane, ethene and acetylene; This calibrating gas can be commercially available, and its concentration and volume are decided by manufacturer production specification;
(2) inject calibrating gas from injection port, injector temperature is 60 DEG C, under carrier gas mobilization, calibrating gas is divided into two-way after by oil suction post, lead up to A chromatographic column separation of methane, ethane, ethene and four kinds of hydrocarbon components of acetylene, and determine peak time and peak height parameter by fid detector, realize the demarcation of methane, ethane, ethene and four kinds of hydrocarbon components of acetylene; The B chromatographic column of separately leading up to separates sulfur hexafluoride, and determines peak time and peak height parameter by TCD detecting device, realizes the demarcation of sulfur hexafluoride; Wherein, described carrier gas is nitrogen, and flow rate of carrier gas is 15mL/mL; A chromatographic column and B chromatographic column column temperature are 60 DEG C; TCD detector temperature is 60 DEG C;
(3) from transformer oil to be measured, deviate from dissolved gas as sample gas, or take out methane gas as sample gas from the gas collector box of transformer to be measured; Get and the sample gas of step (1) same volume, according to the selected chromatographic condition of step (2) and step, sample gas component and content are analyzed.
Wherein, described oil suction post is the WX-01 type oil suction post that Wuhan World Engineering Technology Co., Ltd. produces; Described A chromatographic column and B chromatographic column are packed column; The fixing fixing phase of w-01 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in described A chromatographic column, 3 meters of column lengths; The fixing fixing phase of w-03 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in B chromatographic column, 2 meters of column lengths.
The analysis result of said method is in table 1, table 2, Fig. 2 and Fig. 3.
Table 1:
| Sequence number | Component | Concentration μ L/L | |
| 1 | Methane | 412 | 10048 |
| 2 | Ethene | 318 | 9987 |
| 3 | Ethane | 294 | 8367 |
| 4 | Acetylene | 185 | 4424 |
| 5 | Sulfur hexafluoride | 498 | 5860 |
Table 2:
| Sequence number | Component | Concentration μ L/L | |
| 1 | Methane | 440 | 10732 |
| 2 | Ethene | 312 | 9808 |
| 3 | Ethane | 282 | 8027 |
| 4 | Acetylene | 179 | 4289 |
| 5 | Sulfur hexafluoride | 51 | 600 |
Claims (2)
1. the checkout equipment of sulfur hexafluoride gas in an oil-filled transformer, it is characterized in that, described equipment comprises carrier gas generating means (1), the oil suction post (3) being connected with carrier gas generating means (1), the A chromatographic column (4) being connected with oil suction post (3) respectively and B chromatographic column (6), the fid detector (5) being connected with A chromatographic column (4) and the TCD detecting device being connected with B chromatographic column (6); Between described carrier gas generating means (1) and oil suction post (3), be provided with injection port (2); The WX-01 type oil suction post that described oil suction post (3) is produced for Wuhan World Engineering Technology Co., Ltd.; Described A chromatographic column (4) and B chromatographic column (6) are packed column; The fixing fixing phase of w-01 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in described A chromatographic column (4), 1-5 meters of column lengths; The fixing fixing phase of w-03 type of producing for Wuhan World Engineering Technology Co., Ltd. mutually in B chromatographic column (6), 1-5 meters of column lengths.
2. the method based on sulfur hexafluoride gas in equipment Inspection oil-filled transformer described in claim 1, comprises the steps:
(1) get the calibrating gas that component is sulfur hexafluoride, methane, ethane, ethene and acetylene;
(2) inject calibrating gas from injection port, under carrier gas mobilization, calibrating gas is divided into two-way after by oil suction post, lead up to A chromatographic column separation of methane, ethane, ethene and four kinds of hydrocarbon components of acetylene, and determine peak time and peak height parameter by fid detector, realize the demarcation of methane, ethane, ethene and four kinds of hydrocarbon components of acetylene; The B chromatographic column of separately leading up to separates sulfur hexafluoride, and determines peak time and peak height parameter by TCD detecting device, realizes the demarcation of sulfur hexafluoride; Wherein, described carrier gas is nitrogen, and flow rate of carrier gas is 1-30mL/min; A chromatographic column and B chromatographic column column temperature are 50-80 DEG C; TCD detector temperature is 60-80 DEG C;
(3) from transformer oil to be measured, deviate from dissolved gas as sample gas, or take out methane gas as sample gas from the gas collector box of transformer to be measured; Get and the sample gas of step (1) same volume, according to the selected chromatographic condition of step (2) and step, sample gas component and content are analyzed.
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| CN201210478579.3A CN102967671B (en) | 2012-11-22 | 2012-11-22 | Device and method for detecting sulfur hexafluoride gas in oil immersed transformer |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103558313A (en) * | 2013-11-15 | 2014-02-05 | 国家电网公司 | Gas chromatography determination device for sulfur hexafluoride decomposition products |
| CN105241985B (en) * | 2014-05-28 | 2017-07-18 | 国网山西省电力公司电力科学研究院 | The method for obtaining insulating oil gas-chromatography in transformer |
| CN110967580B (en) * | 2019-11-13 | 2021-10-29 | 宁波铂汉科技有限公司 | Transformer test device |
| CN110836940B (en) * | 2019-11-13 | 2022-05-13 | 国网福建省电力有限公司 | Micro-filling column for portable insulating oil chromatographic analyzer and preparation method and application thereof |
| CN111473921B (en) * | 2020-04-16 | 2022-09-09 | 国网湖南省电力有限公司 | Detection system of sulfur hexafluoride leakage alarm device |
| CN111766018A (en) * | 2020-05-25 | 2020-10-13 | 国网上海市电力公司 | Method for judging internal leakage of sulfur hexafluoride in oil gas casing |
| CN114047278A (en) * | 2021-12-10 | 2022-02-15 | 杭州晟冠科技有限公司 | Calibration device and method for double-chromatographic-column oil gas online monitoring system |
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