CN103048597A - Method for monitoring surface discharge of organic resin insulating medium in sulfur hexafluoride (SF6) electric equipment by taking CS2 (carbon disulfide) as characteristic gas - Google Patents
Method for monitoring surface discharge of organic resin insulating medium in sulfur hexafluoride (SF6) electric equipment by taking CS2 (carbon disulfide) as characteristic gas Download PDFInfo
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- CN103048597A CN103048597A CN2012105653876A CN201210565387A CN103048597A CN 103048597 A CN103048597 A CN 103048597A CN 2012105653876 A CN2012105653876 A CN 2012105653876A CN 201210565387 A CN201210565387 A CN 201210565387A CN 103048597 A CN103048597 A CN 103048597A
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- organic resin
- electrical equipment
- sulfur hexafluoride
- gas
- insulating organic
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Abstract
The invention discloses a method for monitoring surface discharge of an organic resin insulating medium in sulfur hexafluoride (SF6) electric equipment by taking CS2 (carbon disulfide) as a characteristic gas. The method comprises the following steps of: sampling a gas sample in SF6 electric equipment for performing CS2 qualitative or quantitative detection; and when the presence of CS2 is detected, determining that the organic resin insulating medium is subjected to discharge harm. In the method, the discharge erosion on the organic resin insulating medium in the SF6 electric equipment is judged by performing CS2 qualitative or quantitative detection on the gas in the SF6 electric equipment, so that detection stability, data accuracy and universality for different types of SF6 electric equipment are realized.
Description
Technical field
The present invention relates to a kind of insulation of electrical installation status monitoring field, especially relate to a kind of with CS
2Be characteristic gas monitoring sulfur hexafluoride (SF
6) method of insulating organic resin dielectric surface discharge in the electrical equipment.
Background technology
Sulfur hexafluoride (SF
6) used in a large number the insulating organic resin medium such as disk insulator in the electrical equipment, and these media finally cause insulation breakdown in case the surface discharge occurs will produce irreversible infringement, jeopardize equipment and personal safety.Therefore, at SF
6Must its state of insulation be monitored in the use procedure of electrical equipment, avoid the generation of the situation of causing danger.
Traditional for SF
6The monitoring of insulation of electrical installation state comprises superfrequency method (UHF) and chemical composition analysis method.The superfrequency method is by detecting SF
6The discharge signal of inside electric appliance judges whether the insulating organic resin medium discharges.Yet the UHF method can't realize fault type recognition, is difficult to judge SF according to monitoring result
6Whether the insulating organic resin medium of inside electric appliance is subject to the discharge infringement.The chemical composition analysis method is passed through SF
6The SF of electrical equipment
6Gas decomposition product judges whether the insulating organic resin medium discharges.The gas of routine monitoring comprises SO
2, SO
2F
2Deng sulfonyl gas, but such gas can appear in all types of discharges substantially, can't judge whether discharge is relevant with the insulating organic resin medium according to them.And use CF
4, CO, CO
2Judge SF Deng the existence that contains the C material
6Inside electric appliance insulating organic resin defective has problems too, because their generation might be relevant with the insulating organic resin medium, is producing SF
6In the process, unavoidably can be with CF
4, CO, CO
2Be incorporated among the GIS.Therefore, need to find the method that whether the insulating organic resin dielectric surface discharges in a kind of effective monitoring SF6 electrical equipment.
Summary of the invention
The object of the present invention is to provide a kind of with CS
2Be characteristic gas monitoring sulfur hexafluoride (SF
6) method of insulating organic resin dielectric surface discharge in the electrical equipment.CS
2Stable in properties shows according to quantum chemistry calculation, and its way of production is directly related with being etched of insulating organic resin medium, rather than at SF
6The foreign gas of being sneaked in the production run.The method is to SF
6Gas in the electrical equipment carries out CS
2Qualitative or quantitative detection is in order to judge sulfur hexafluoride (SF
6) whether insulating organic resin is subject to discharge and corrodes in the electrical equipment, detects stablely, data are accurate, to different SF
6Electrical equipment has universality.
The objective of the invention is to be achieved through the following technical solutions: a kind of with CS
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment gathers SF
6Gaseous sample in the electrical equipment carries out CS
2Qualitative or quantitative detection is when detecting CS
2When existing, the insulating organic resin medium is subject to the discharge infringement.
Further, among the present invention to SF
6Gaseous sample in the electrical equipment carries out CS at any time
2Quantitatively detect, work as CS
2Concentration increase in time and when increasing, the insulating organic resin medium continues to be subject to the discharge infringement.
CS among the present invention
2Vapor-phase chromatography is adopted in qualitative or quantitative detection, and detecting step is specific as follows:
(1) collected specimens: gather SF
6Gaseous sample in the electrical equipment;
(2) gaseous sample of getting in the step (1) carries out gas chromatographic analysis, obtains chromatogram analysis data;
(3) with chromatogram analysis data and the predetermined C S of the acquisition of step (2)
2Normal data is compared, can be to CS in the gaseous sample
2Carry out quantitative and qualitative analysis.
In the described step (1), gather gaseous sample according to DL/T 1032-2006 electrical equipment with sulfur hexafluoride (SF6) gas sampling method regulation.
In the described step (2), adopt gas chromatograph detecting device PDD in parallel that sample is detected, chromatographic condition is:
Chromatographic column adopting polarity chromatographic column or nonpolar chromatographic column;
Gas circuit connects:
A. carrier gas: purity 99.999% above helium, output pressure 0.5 ~ 0.6MPa;
B. drive gas: nitrogen, driving the gas output pressure is 0.3 ~ 0.4MPa;
Analysis condition:
PDD1 signal output: A;
PDD2 signal output: B;
Sample introduction pressure: 0.05～0.1MPa;
Initial 30～50 ℃ of post stove keeps 6～10min, then is raised to 150～300 ℃ with 10 ℃ of programs of per minute, keeps 3～8 minutes.
Chromatographic column adopting TECP φ 3 * 3m PORAPAK Q 0.53mm of the present invention * 30m PORAPAK Q φ 3 * 3m capillary column.
In the step of the present invention (3), predetermined C S
2Normal data is with CS
2Calibrating gas is diluted to a plurality of different CS
2The calibrating gas of concentration, replication several times under identical GC conditions obtain CS
2Normal data, described chromatographic condition is identical with step (2).
Predetermined C S described in the step of the present invention (3)
2Normal data is CS
2Retention time, and CS
2The concentration typical curve relevant with peak area.
The present invention has the following advantages:
(1) the present invention is with CS
2For characteristic gas carries out the monitoring that the insulating organic resin medium is subject to discharging and corrodes, detect stablely, data are accurate, can be effectively the insulating organic resin medium of sulfur hexafluoride (SF6) the electrical equipment fault that corrodes that is subject to discharging be identified.
(2) the present invention has universality to different sulfur hexafluoride (SF6) electrical equipment, not disturbed by the factors such as on-the-spot humidity, temperature, electric field.
(3) the present invention is to CS
2Detectability lower, to CS
2Identification sensitive.
(4) the present invention can realize on-line monitoring, when detecting CS
2Generation can judge directly that the insulating organic resin medium suffers erosion, and work as CS
2Growth with detection time increases, and can judge directly that the erosion of insulating organic resin medium continues.
Description of drawings
Fig. 1 is the typical curve of the embodiment of the invention.
Embodiment
The present invention adopts gas chromatograph detecting device PDD in parallel and following chromatographic condition to the CS in the gaseous sample
2Detect, all can reach purpose of the present invention:
Chromatographic column adopting polarity chromatographic column or nonpolar chromatographic column; Such as TECP φ 3 * 3m PORAPAK Q 0.53mm * 30m PORAPAK Q φ 3 * 3m capillary column.
Gas circuit connects:
A. carrier gas: purity 99.999% above helium, output pressure 0.5 ~ 0.6MPa;
B. drive gas: nitrogen, driving the gas output pressure is 0.3 ~ 0.4MPa;
Analysis condition:
PDD1 signal output: A;
PDD2 signal output: B;
Sample introduction pressure: 0.05～0.1MPa;
Initial 30～50 ℃ of post stove keeps 6～10min, then is raised to 150～300 ℃ with 10 ℃ of programs of per minute, keeps 3～8 minutes.
Embodiment one:
The preparation standard curve:
Chromatographic condition:
Detecting instrument and setting parameter: adopt chromatograph that sample is detected.Detecting device PDD in parallel adopts TECP φ 3 * 3m PORAPAK Q 0.53mm * 30m PORAPAK Q φ 3 * 3m capillary column.Shown in design parameter is set as follows:
Gas circuit connects:
A. carrier gas: purity 99.999% above helium, output pressure 0.5 ~ 0.6MPa
B. drive gas: nitrogen, driving the gas output pressure is 0.3 ~ 0.4MPa
Analysis condition:
PDD1 polarity: 0 range: 8 signals output: A
PDD2 polarity: 1 range: 8 signals output: B
Sample introduction pressure: 0.05MPa
Initial 40 ℃ of post stove keeps 8min, then is raised to 180 ℃ with 10 ℃ of per minutes, keeps 5 minutes.(wherein auxiliary 1 temperature refers to the temperature of 5A post)
Based on above parameter setting, CS
2Can qualitatively be:
Use distributing instrument to CS
2Gas dilutes, gas after the dilution is passed into chromatograph to be detected, each concentration gases is measured 3 times, thereby sets up the typical curve that concentration gradient is 0.189,0.378,1.133,1.89,3.024,3.78,7.56,18.847 μ L/L, as shown in Figure 1.
The typical curve correlation parameter is as follows:
(1) collected specimens: stipulate collected specimens with sulfur hexafluoride (SF6) gas sampling method according to DL/T 1032-2006 electrical equipment.
(2) gaseous sample of getting in the step (1) carries out gas chromatographic analysis under above-mentioned chromatographic condition, obtain CS
2Peak area and retention time.
(3) with the CS of the acquisition of step (2)
2Peak area and retention time and CS
2Typical curve and CS
2The retention time comparison can be to CS in the gaseous sample
2Carry out quantitative and qualitative analysis.
When detecting CS
2But the inner insulating organic resin medium of judgment device has been subject to discharge and has corroded, when detecting CS
2But concentration in time increase and increase the inner insulating organic resin medium of judgment device and be subject to discharge and corrode.
The above only is the preferred embodiments of the present invention for the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that previous embodiment is put down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. one kind with CS
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment is characterized in that, gathers SF
6Gaseous sample in the electrical equipment carries out CS
2Qualitative or quantitative detection is when detecting CS
2When existing, the insulating organic resin medium is subject to the discharge infringement.
2. described with CS according to claim 1
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment is characterized in that, to SF
6Gaseous sample in the electrical equipment carries out CS
2Quantitatively detect, work as CS
2Concentration increase in time and when increasing, the insulating organic resin medium continues to be subject to the discharge infringement.
3. described with CS according to claim 1
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment is characterized in that described CS
2Vapor-phase chromatography is adopted in qualitative or quantitative detection.
4. described with CS according to claim 3
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment is characterized in that, described qualitative or quantitative detecting step is specific as follows:
(1) collected specimens: gather SF
6Gaseous sample in the electrical equipment;
(2) gaseous sample of getting in the step (1) carries out gas chromatographic analysis, obtains chromatogram analysis data;
(3) with chromatogram analysis data and the predetermined C S of the acquisition of step (2)
2Normal data is compared, can be to CS in the gaseous sample
2Carry out quantitative and qualitative analysis.
5. described with CS according to claim 4
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment is characterized in that, in the described step (1), gathers gaseous sample according to DL/T 1032-2006 electrical equipment with sulfur hexafluoride gas sampling method regulation.
6. described with CS according to claim 4
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment is characterized in that, in the described step (2), adopts gas chromatograph detecting device PDD in parallel that sample is detected, and chromatographic condition is:
Chromatographic column adopting polarity chromatographic column or nonpolar chromatographic column;
Gas circuit connects:
A. carrier gas: purity 99.999% above helium, output pressure 0.5 ~ 0.6MPa;
B. drive gas: nitrogen, driving the gas output pressure is 0.3 ~ 0.4MPa;
Analysis condition:
PDD1 signal output: A;
PDD2 signal output: B;
Sample introduction pressure: 0.05～0.1MPa;
Initial 30～50 ℃ of post stove keeps 6～10min, then is raised to 150～300 ℃ with 10 ℃ of programs of per minute, keeps 3～8 minutes.
7. described with CS according to claim 6
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment is characterized in that described chromatographic column adopting TECP φ 3 * 3m PORAPAK Q 0.53mm * 30m PORAPAK Q φ 3 * 3m capillary column.
8. described with CS according to claim 4
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment is characterized in that, in the described step (3), and predetermined C S
2Normal data is with CS
2Calibrating gas is diluted to a plurality of different CS
2The calibrating gas of concentration, replication several times under identical GC conditions obtain CS
2Normal data, described chromatographic condition is identical with step (2).
9. according to claim 4 or 8 described with CS
2Method for insulating organic resin dielectric surface discharge in the characteristic gas monitoring sulfur hexafluoride electrical equipment is characterized in that the predetermined C S described in the step (3)
2Normal data is CS
2Retention time, and CS
2The concentration typical curve relevant with peak area.
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|---|---|---|---|
| CN201210565387.6A CN103048597B (en) | 2012-12-24 | 2012-12-24 | With CS 2for the method for insulating organic resin dielectric surface electric discharge in characteristic gas monitoring sulfur hexafluoride electrical equipment |
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|---|---|---|---|
| CN201210565387.6A CN103048597B (en) | 2012-12-24 | 2012-12-24 | With CS 2for the method for insulating organic resin dielectric surface electric discharge in characteristic gas monitoring sulfur hexafluoride electrical equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092678A (en) * | 2021-04-01 | 2021-07-09 | 国网陕西省电力公司电力科学研究院 | Epoxy resin pair SF under discharge condition6Research method for influence of trace products |
| CN113985233A (en) * | 2021-11-09 | 2022-01-28 | 国网河南省电力公司济源供电公司 | GIS basin-type insulator partial discharge chromatographic diagnosis method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113092678A (en) * | 2021-04-01 | 2021-07-09 | 国网陕西省电力公司电力科学研究院 | Epoxy resin pair SF under discharge condition6Research method for influence of trace products |
| CN113985233A (en) * | 2021-11-09 | 2022-01-28 | 国网河南省电力公司济源供电公司 | GIS basin-type insulator partial discharge chromatographic diagnosis method |
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Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Co-patentee after: Wuhan University Patentee after: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Address before: Guangzhou City, Guangdong province Yuexiu District 510080 Dongfeng East Road, No. 8 building water Kong Guangdong Co-patentee before: Wuhan University Patentee before: Electrical Power Research Institute of Guangdong Power Grid Corporation |