CN103698478A - SF6 (sulfur hexafluoride) gas concentration vertical distribution monitoring system in GIS (Gas Insulated Switchgear) chamber - Google Patents
SF6 (sulfur hexafluoride) gas concentration vertical distribution monitoring system in GIS (Gas Insulated Switchgear) chamber Download PDFInfo
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- CN103698478A CN103698478A CN201310704438.3A CN201310704438A CN103698478A CN 103698478 A CN103698478 A CN 103698478A CN 201310704438 A CN201310704438 A CN 201310704438A CN 103698478 A CN103698478 A CN 103698478A
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Abstract
The invention provides a SF6 (sulfur hexafluoride) gas concentration vertical distribution monitoring system in a GIS (Gas Insulated Switchgear) chamber. The SF6 gas concentration vertical distribution monitoring system in the GIS chamber comprises a plurality of detection modules, wherein each detection module comprises a plurality of pipelines, a control platform, a detection device, a gas pump and a gas valve set; the detection device, the gas pump and the gas valve set are connected with the control platform respectively; the gas valve set comprises a plurality of gas valves; the gas valves are mounted on each pipeline which is connected with the gas pump; the detection device is also connected with an upper computer which is arranged outside the GIS chamber; the plurality of detection modules are evenly distributed on preset detection surface layers in the GIS chamber; the control platform is used for controlling opening and closing states of the gas valves, controlling opening of the gas pump and pumping gas in the GIS chamber into the detection device through the pipelines; the detection device is used for detecting the concentration of the SF6 gas in the GIS chamber and then outputting the concentration of the SF6 gas to the upper computer. Through the SF6 gas concentration vertical distribution monitoring system in the GIS chamber, high-precision and real-time monitoring of the concentration of the SF6 gas in the GIS chamber can be realized.
Description
Technical field
The present invention relates to SF6 gas detection technology field, particularly relate to the three-dimensional distribution monitoring system of a kind of GIS chamber SF6 gas concentration.
Background technology
SF6 gas self is a kind of gas of excellent insulation performance, 3 times of its breakdown field strength the chances are air, and its arc extinction performance is excellent simultaneously, is therefore widely used in power equipment gas-insulated.But the gas-insulating and fully-enclosed combined electrical apparatus of GIS(gasinsulated substation) in indoor station SF6 air leakage hidden danger now as being ascendant trend year by year, dielectric strength and the reliability service of the leakage contribution power equipment of one side SF6 gas, and environment is caused to larger impact; On the other hand owing to having switching manipulation and superpotential situation in gas switch and GIS, cause thus discharge process, and cause the decomposition of SF6 gas, after the accessory substance of SF6 gas leaks out, because density is greater than air, therefore easy low layer Spatial Agglomeration in station, and be difficult for distributing, to entering indoor maintenance and tour personnel's safety, formed very serious danger.The redox characteristic of traditional detection method based on SF6, adopt semi-conductive gas sensor, accuracy of detection is low, the life-span of sensor is short, adopt in addition SF6 at the laser imaging system of the absorption characteristic of infrared spectrum wave band, cost is high, needs to adopt manual inspection mode simultaneously, human cost is high, unsuitable large-area popularization; In addition, the layout not science of existing gas sensor in station, direct-detection gas sensor position is the gas content in the minimum region of scope around, so its testing result is for the larger error of existence of SF6 distribution of gas in GIS station, monitoring effect is not good, has potential safety hazard.
Summary of the invention
Based on this, the invention provides the three-dimensional distribution monitoring system of a kind of GIS chamber SF6 gas concentration, in the time of realizing the high-precision real of SF6 gas concentration in the indoor station of GIS, monitor.
The three-dimensional distribution monitoring system of a kind of GIS chamber SF6 gas concentration, comprise a plurality of detection modules, described detection module comprises many pipelines and controls platform, and the checkout equipment, air pump, the air valve group that are connected with described control platform respectively, described air valve group comprises a plurality of air valves, described air valve is arranged on every pipeline, and each pipeline is all connected with described air pump;
Described checkout equipment also connects and is arranged on the outdoor host computer of described GIS;
Described a plurality of detection module is evenly arranged in indoor each layer of default detection faces of GIS;
Described control platform is for controlling the folding condition of air valve described in each, and control described air pump and open, the gas that GIS is indoor is pumped in described checkout equipment by described pipeline, and described checkout equipment for exporting described host computer to from the indoor gas of described GIS detects the concentration of SF6 gas.
The three-dimensional distribution monitoring system of above-mentioned GIS chamber SF6 gas concentration, in the indoor default multilayer detection faces of GIS, arrange detection module, this detection module comprises many pipelines and controls platform, checkout equipment, air pump, air valve group, wherein controlling platform can be for controlling the folding condition of air valve described in each, and control described air pump and open, the gas that GIS is indoor is pumped in described checkout equipment by described pipeline, described checkout equipment detects the concentration of SF6 gas from the indoor gas of described GIS, obtain after this concentration value and output to and be arranged in the outdoor host computer of GIS, realized the on-line monitoring of SF6 gas, both improved equipment reliability of operation, guarantee again operation maintenance personnel's personal safety simultaneously.
Accompanying drawing explanation
Fig. 1 is the three-dimensional distribution monitoring system of GIS of the present invention chamber SF6 gas concentration structural representation in one embodiment.
Fig. 2 is the structural representation of detection module in Fig. 1.
Fig. 3 is the display interface schematic diagram of host computer in Fig. 1.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
As shown in Figure 1, it is the schematic diagram of the three-dimensional distribution monitoring system of a kind of GIS of the present invention chamber SF6 gas concentration, comprise a plurality of detection modules, as shown in Figure 2, be the structural representation of described detection module, comprise many pipelines and control platform, and the checkout equipment, air pump, the air valve group that are connected with described control platform respectively, described air valve group comprises a plurality of air valves, and described air valve is arranged on every pipeline, and each pipeline is all connected with described air pump;
Described checkout equipment also connects and is arranged on the outdoor host computer of described GIS;
Described a plurality of detection module is evenly arranged in indoor each layer of default detection faces of GIS;
Described control platform is for controlling the folding condition of air valve described in each, and control described air pump and open, the gas that GIS is indoor is pumped in described checkout equipment by described pipeline, and described checkout equipment for exporting described host computer to from the indoor gas of described GIS detects the concentration of SF6 gas;
In the present embodiment, a plurality of detection modules are set in the plane of the indoor differing heights of GIS, each detection module can evenly be placed according to indoor stage space size, can place 4 detection modules at every one deck;
Wherein, described detection faces at least can have two-layer, and wherein one deck detection faces is the indoor ground of described GIS, and another layer of detection faces is the plane on 1 meter, described GIS indoor distances ground; Because SF6 gas density is large compared with air, SF6 gas more can be deposited on GIS flooring, therefore need one deck detection faces be set on the indoor ground of GIS, another layer of detection faces can be arranged in the plane on 1 meter, GIS indoor distances ground, up the concentration of height SF6 gas is generally lower again, can not arrange;
Described detection module comprises many pipelines and controls platform, and the checkout equipment, air pump, the air valve group that are connected with described control platform respectively, described air valve group comprises a plurality of air valves, and an air valve correspondence is arranged on a pipeline, and each pipeline is all connected with described air pump;
Control platform for controlling the unlatching of air pump or closing, and the folding condition of controlling the air valve of installing on every pipeline; On every pipeline, be all provided with air valve, for controlling conducting or the shutoff of pipeline; Every pipeline is all connected to air pump, pipeline is used for being arranged on monitoring point, if control platform, control air pump unlatching, can pump into by the pipeline of conducting the gas at place, monitoring point, the gas pumping into enters checkout equipment, by checkout equipment, carry out the detection of SF6 gas concentration, testing result exports connected on-line monitoring system host computer to.
In a preferred embodiment, described control platform is also for controlling air valve on a pipeline wherein in conducting state, and the air valve on other pipelines is in off state; Open described air pump, the pipeline by conducting is pumped into described checkout equipment by the indoor gas of GIS simultaneously;
In the present embodiment, in each detection module, control platform and control the duty of air valve, making has and only has an air valve in conducting state at synchronization, all the other air valves are in off state, mixed gas in region under the conducting pipeline of choosing being covered by air pump pumps into checkout equipment, because the detection of checkout equipment needs certain hour section, therefore when pumping into detection gas, the mixed gas having detected is pumped, with stylish gas to be detected, pump into be checked, the gas testing result of the same area can be carried out statistical computation according to pumping into detection testing time, take out random disturbance, according to the requirement of accuracy of detection, determine the detection time of detecting the single gas return path of test.Until certain, detect loop and complete after detection, by controlling platform control air valve, switch to the next loop of detecting.Checkout equipment can got lines crossed each testing result to transfer to host computer by RS485.
Described host computer receives described testing result, when the described concentration value of judgement is greater than default warning value, sends warning message; Can be numbered each detection module, and every pipeline in each detection module is numbered to mark, as shown in Figure 3, host computer can correspondingly generate display interface, after getting the SF6 gas concentration of every pipeline, on display interface, carry out the SF6 gas concentration value prompting in respective tube road; Can be divided into different grades according to SF6 gas content, 3 grades preferably: normal, note and report to the police, the SF6 gas content of normal level is 0ppm, notice that the SF6 gas content of grade is for being greater than 0ppm and being less than 100ppm, the SF6 gas content of alarm level is for being greater than 100ppm, and with green, orange and red warning, different brackets SF6 gas content can be adjusted as required respectively.
In a preferred embodiment, every layer of detection faces evenly arranges 4 detection module mounting points, in each detection module mounting points, arranges described detection module; For example, detection faces is divided into 4 little rectangles, detection module mounting points is arranged on the central point of each little rectangle, so can realize the even setting of detection module, the gas collecting of the corresponding little rectangular area of each detection module, makes the detection of the indoor SF6 gas of GIS more accurate; Wherein, can comprise 8 pipelines in each detection module, each pipeline evenly arranges centered by described mounting points, every corresponding monitoring point of pipeline, and 8 pipelines can cover little rectangular area corresponding to this detection module comprehensively, further improve accuracy of detection.
In a preferred embodiment, described checkout equipment is the sensor based on far-infrared spectrum, and sensors with auxiliary electrode were only needs 0.1s detection time, and accuracy of detection can reach 1.0ppm.
The three-dimensional distribution monitoring system of GIS of the present invention chamber SF6 gas concentration, in the indoor default multilayer detection faces of GIS, arrange detection module, this detection module comprises many pipelines and controls platform, checkout equipment, air pump, air valve group, wherein controlling platform can be for controlling the folding condition of air valve described in each, and control described air pump and open, the gas that GIS is indoor is pumped in described checkout equipment by described pipeline, described checkout equipment detects the concentration of SF6 gas from the indoor gas of described GIS, obtain after this concentration value and output to and be arranged in the outdoor host computer of GIS, realized the on-line monitoring of SF6 gas, both improved equipment reliability of operation, guarantee again operation maintenance personnel's personal safety simultaneously.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (7)
1. the three-dimensional distribution monitoring system of GIS chamber SF6 gas concentration, it is characterized in that, comprise a plurality of detection modules, described detection module comprises many pipelines and controls platform, and the checkout equipment, air pump, the air valve group that are connected with described control platform respectively, described air valve group comprises a plurality of air valves, and described air valve is arranged on every pipeline, and each pipeline is all connected with described air pump;
Described checkout equipment also connects and is arranged on the outdoor host computer of GIS;
Described a plurality of detection module is evenly arranged in indoor each layer of default detection faces of GIS;
Described control platform is for controlling the folding condition of air valve described in each, and control described air pump and open, the gas that GIS is indoor is pumped in described checkout equipment by described pipeline, and described checkout equipment for exporting described host computer to from the indoor gas of described GIS detects the concentration of SF6 gas.
2. the three-dimensional distribution monitoring system of GIS according to claim 1 chamber SF6 gas concentration, it is characterized in that, described detection faces has at least two-layer, and wherein one deck detection faces is the indoor ground of described GIS, and another layer of detection faces is the plane on 1 meter, described GIS indoor distances ground.
3. the three-dimensional distribution monitoring system of GIS according to claim 1 chamber SF6 gas concentration, is characterized in that, described control platform is also for controlling air valve on a pipeline wherein in conducting state, and the air valve on other pipelines is in off state; Open described air pump, the pipeline by conducting is pumped into described checkout equipment by the indoor gas of GIS simultaneously.
4. the three-dimensional distribution monitoring system of GIS according to claim 2 chamber SF6 gas concentration, is characterized in that, every layer of detection faces evenly arranges 4 detection module mounting points, in each detection module mounting points, arranges described detection module.
5. the three-dimensional distribution monitoring system of GIS according to claim 4 chamber SF6 gas concentration, is characterized in that, each detection module comprises 8 pipelines, and each pipeline evenly arranges centered by described mounting points.
6. the three-dimensional distribution monitoring system of GIS according to claim 1 chamber SF6 gas concentration, is characterized in that, described checkout equipment is far red light spectrum sensor.
7. the three-dimensional distribution monitoring system of GIS according to claim 1 chamber SF6 gas concentration, is characterized in that, described host computer also, for when the described concentration value of judgement is greater than default warning value, sends warning message.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108303343A (en) * | 2018-03-08 | 2018-07-20 | 国网安徽省电力有限公司电力科学研究院 | A kind of novel GIS SF6Density monitors simulation test device on-line |
| CN111307376A (en) * | 2020-03-04 | 2020-06-19 | 云南电网有限责任公司电力科学研究院 | Method and system for detecting GIS gas leakage |
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| US20030071629A1 (en) * | 2001-10-15 | 2003-04-17 | Wenjun Yang | Gas analyzer with real-time broadband monitoring and snapshot selective detection |
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| CN111307376A (en) * | 2020-03-04 | 2020-06-19 | 云南电网有限责任公司电力科学研究院 | Method and system for detecting GIS gas leakage |
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