CN203551467U - Online monitoring system for sulfur hexafluoride switch - Google Patents
Online monitoring system for sulfur hexafluoride switch Download PDFInfo
- Publication number
- CN203551467U CN203551467U CN201320699871.8U CN201320699871U CN203551467U CN 203551467 U CN203551467 U CN 203551467U CN 201320699871 U CN201320699871 U CN 201320699871U CN 203551467 U CN203551467 U CN 203551467U
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- CN
- China
- Prior art keywords
- gas
- monitoring system
- laser
- switch
- circuit breaker
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 48
- 229910018503 SF6 Inorganic materials 0.000 title abstract description 9
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title abstract description 9
- 229960000909 sulfur hexafluoride Drugs 0.000 title abstract description 6
- 238000005070 sampling Methods 0.000 claims abstract description 46
- 239000013307 optical fiber Substances 0.000 claims abstract description 18
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 17
- 239000005864 Sulphur Substances 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 241000931526 Acer campestre Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Abstract
The utility model discloses an online monitoring system for a sulfur hexafluoride switch. The online monitoring system comprises a first gas sampling device connected with the sulfur hexafluoride switch to be monitored through a gas collecting pipe, wherein a gas collecting valve is arranged on the gas collecting pipe, and the gas sampling device is connected with a laser gas analyzer through an optical fiber. The online monitoring system, disclosed by the utility model, comprises the first gas sampling device connected with the sulfur hexafluoride switch to be monitored through the gas collecting pipe, and the gas sampling device is connected with the laser gas analyzer through the optical fiber, so that the SF6 (sulfur hexafluoride) switch in a working state can be monitored by monitoring and analyzing the SF6 gas concentration of the SF6 switch in the working state. By carrying out gas concentration monitoring by virtue of a laser technique, the monitoring system has the advantages that the structure is simple, the cost is low, and meanwhile, the monitoring accuracy is improved.
Description
Technical field
The utility model relates to a kind of sulphur hexafloride circuit breaker on-line monitoring system.
Background technology
The sulfur hexafluoride of existing many monitoring points is (referred to as SF
6) on-line monitoring system of switch, be all to arrange monitoring instrument or sensor in each monitoring point, the SF of Measurement and analysis monitoring point
6gas concentration in switch or amount of leakage, after measurement data is analyzed by communication cable by data transfer to system host or server.Because monitoring instrument or the sensor of employing generally comprise measurement sensitive element, signal processing unit, data analysis unit, signal transmitting transmission unit etc., therefore ubiquity system composition is complicated, cost drops into the problems such as excessive, failure rate is high.
Utility model content
The purpose of this utility model is to provide a kind of sulphur hexafloride circuit breaker on-line monitoring system, to solve existing monitoring system composition complex structure, cost is high and failure rate is high problem.
In order to realize above object, the technical scheme that the utility model adopts is: a kind of sulphur hexafloride circuit breaker on-line monitoring system, comprise gas the first sampling apparatus for being connected with sulphur hexafloride circuit breaker to be measured by getting tracheae, the described tracheae of getting is provided with and gets air valve, and gas sampling assembly is connected with laser gas analyzer by optical fiber.
This on-line monitoring system also comprises that one group for being arranged on the second gas sampling assembly of sulphur hexafloride circuit breaker to be measured point to be monitored, and described each gas sampling assembly is connected with laser gas analyzer by optical fiber.
Described laser gas analyzer is connected with a long distance control system communication.
Sulphur hexafloride circuit breaker on-line monitoring system of the present utility model comprises the gas sampling assembly for being connected with sulphur hexafloride circuit breaker to be measured by getting tracheae, and gas sampling assembly is connected with laser gas analyzer by optical fiber, according to the operating SF of monitoring analysis
6sF in switch
6gas concentration, to operating SF
6switch is monitored.This monitoring system adopts laser technology to carry out gas concentration inspect, and simple in structure, cost is low, has improved the accuracy of monitoring simultaneously.
In concentration monitor, at SF to be measured
6the monitoring point of switch is carried out the monitoring of gas leakage amount again, has further improved the accuracy of monitoring, has realized a SF
6switch carries out multiple spot gas-monitoring.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the utility model sulphur hexafloride circuit breaker on-line monitoring system;
Fig. 2 is the schematic diagram of the utility model laser gas analyzer embodiment.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.
Be illustrated in figure 1 the utility model sulphur hexafloride circuit breaker on-line monitoring system, as seen from the figure, this system comprises the first gas sampling assembly 41 for being connected with sulphur hexafloride circuit breaker 1 to be measured by getting tracheae 2, getting tracheae is provided with and gets air valve 3, the gas for control inputs to gas sampling assembly; Gas sampling assembly is connected with laser gas analyzer 6 by optical fiber 5, according to the operating SF of monitoring analysis
6sF in switch
6gas concentration, to operating SF
6switch is monitored.
More accurate in order to measure, this on-line monitoring system of the present embodiment also comprises that one group for being arranged on the second gas sampling assembly 42 of sulphur hexafloride circuit breaker to be measured point to be monitored, and each the second gas sampling assembly 42 is also connected with laser gas analyzer 6 by optical fiber.
First gas sampling assembly of the present embodiment is identical with the second gas sampling assembly structure, all adopts sampling air chamber, in sampling air chamber, has sampling air cavity, by sampling air cavity, gas concentration to be measured is measured, and tested gas can free in and out sampling air chamber.This structure and measuring principle are prior art, do not repeat them here.
In addition, in order to realize remote monitoring, laser gas analyzer is connected with long distance control system 7 communications.Long distance control system has data receiver, demonstration, warning function, and data that can receiving and analyzing host analysis also show, can sound when displayed value exceedes the alarming value of setting, light reports to the police.
The laser gas analyzer (being main frame) of the present embodiment is according to monitoring point quantity difference, and timesharing is sent one or more laser and sampled air chamber to each, and receives the laser returning from each air chamber.This main frame, according to the parameter calibration value of heterogeneity gas before dispatching from the factory, is analyzed gas componant parameter in each monitoring point sampling air chamber, and is shown; There is simulating signal, digital signal output function, the measurement data of each monitoring point can be uploaded to long distance control system.
When measuring, adopt and get tracheae from SF
6switch is got SF
6gas is to sampling air chamber, SF
6gas enters sampling air chamber and samples; Or simultaneously at SF to be measured
6switch is easily revealed each position of gas and is also established respectively a sampling air chamber, works as SF
6after gas leakage, enter sampling air chamber, the SF of leakage
6gas enters the sampling of sampling air chamber; Sampling air chamber sampled data by Optical Fiber Transmission in laser gas analyzer, after laser gas analyzer 6 is processed, by cable transmission, arrive the far-end monitoring system of pulpit.
As shown in Figure 2, in laser gas analyzer main frame of the present utility model, semiconductor laser and control module are installed, semiconductor laser is as the detection laser light source of gas to be measured, utilize laser control circuit by laser instrument output center wavelength be tuned to the Absorption Line center of gas to be measured, when work, first select the temperature working point of laser instrument, laser tube core temperature is controlled on this working point, then to laser, apply steady current, laser instrument can be launched the modulated laser that a branch of light intensity is constant.
The output terminal of semiconductor laser is connected in the input end of 1*N road output photoswitch, the N road output terminal of 1*N road output photoswitch is connected to the sampling air chamber of establishing in the sampling air chamber of each correspondence by input optical fibre, each sampling air chamber is connected to the corresponding input end in N road of the 1*N input optical switch arranging in main frame by output optical fibre, the output terminal of 1*N input optical switch is connected with infrared photoelectric detector; In this main frame, be also provided with the control module for controlling 1*N road output photoswitch and 1*N input optical switch strobe sets sampling air chamber respective optical path.
The emergent light of semiconductor laser is transferred to the input end of 1*N road output photoswitch, the N road Output of laser of exporting from each output terminal of output photoswitch is transferred to by input optical fibre the sampling air chamber of establishing in corresponding each sampling air chamber, the N passage of control module Dui1*N road output photoswitch adopts the scan period of setting-up time to scan, and the N road timesharing that realizes laser in monitoring system detects.At laser, enter after corresponding sampling air chamber, optical maser wavelength is inswept, and gaseous absorption line to be measured forms flashlight, the N road return signal light of crossing through gas absorption to be measured passing from sampling air chamber transmits back the corresponding input end of the 1*N input optical switch arranging main frame by output optical fibre, 1*N input optical switch He1*N road output photoswitch channel selecting is synchronous, and order is the output terminal to 1*N input optical switch by the back light signal gating of each detection light path.The flashlight of exporting from the output terminal of 1*N input optical switch is received by an infrared photoelectric detector, convert electric signal and preposition amplification, filtering to, and (concentration of second harmonic amplitude and tested gas is linear by lock-in amplifier, to realize second-harmonic detection, gas concentration is higher, the absorbed degree of laser is larger), adopt the gas to be measured of concentration known to demarcate, can realize the measurement to gas concentration to be measured in the air of monitoring point; Detect the first harmonic of infrared photoelectric detector output signal simultaneously, by calculating the ratio of second harmonic and first harmonic, can eliminate the impact that light source intensity rises and falls.
The utility model adopts photoswitch, rather than optical fiber splitter, by the mode of time-sharing multiplex: at synchronization, by controlling two photoswitches, make the corresponding light path of certain sampling air chamber of two photoswitch synchronous selection pass, so that light path information corresponding to this sampling air chamber is detected to analysis.Which can not weaken light intensity, so long transmission distance, under the condition of Same Efficieney laser instrument, Fibre Optical Sensor can distribute fartherly; In addition, only single infrared photoelectric sensor need to be set after 1*N exports photoswitch, reduce cost.
Control module in main frame adopts fpga chip to realize, and has compact conformation, the advantage of dependable performance, and main frame, according to the parameter calibration value of heterogeneity gas before dispatching from the factory, is analyzed gas componant parameter in each monitoring point sampling air chamber, and is shown.Concentration software for calculation is installed in control module, by secondary and the first harmonic signal of the laser absorption signal to lock-in amplifier output, processes, obtain each monitoring point gas concentration information to be measured, by main display module, at main frame place, shown.
The optical fiber of the present embodiment has two effects: the one, and the narrow-linewidth laser that laser instrument is sent transfers to distributed sample air chamber from main frame; The 2nd, by through sampling air chamber absorb after Laser Transmission to main frame.Adopt optical fiber to replace cable transmission signal, have and utilize the intrinsic safety that improves product, effectively reduce costs.
The laser gas analyzer of the present embodiment has adopted photoswitch to describe, and can certainly adopt optical fiber splitter, can realize equally the function of this on-line monitoring system; The present embodiment is with to a SF
6switch carries out multiple spot gas-monitoring and describes, and can certainly adopt said structure to realize many SF
6switch carries out multiple spot gas-monitoring.This similar conversion belongs to those skilled in the art's common technology means, drops in protection domain of the present utility model.
Claims (3)
1. a sulphur hexafloride circuit breaker on-line monitoring system, it is characterized in that: comprise gas the first sampling apparatus for being connected with sulphur hexafloride circuit breaker to be measured by getting tracheae, the described tracheae of getting is provided with and gets air valve, and gas sampling assembly is connected with laser gas analyzer by optical fiber.
2. sulphur hexafloride circuit breaker on-line monitoring system according to claim 1, it is characterized in that: this on-line monitoring system also comprises that one group for being arranged on the second gas sampling assembly of sulphur hexafloride circuit breaker to be measured point to be monitored, and described each gas sampling assembly is connected with laser gas analyzer by optical fiber.
3. sulphur hexafloride circuit breaker on-line monitoring system according to claim 1 and 2, is characterized in that: described laser gas analyzer is connected with a long distance control system communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699871.8U CN203551467U (en) | 2013-11-06 | 2013-11-06 | Online monitoring system for sulfur hexafluoride switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699871.8U CN203551467U (en) | 2013-11-06 | 2013-11-06 | Online monitoring system for sulfur hexafluoride switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551467U true CN203551467U (en) | 2014-04-16 |
Family
ID=50469565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320699871.8U Expired - Lifetime CN203551467U (en) | 2013-11-06 | 2013-11-06 | Online monitoring system for sulfur hexafluoride switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203551467U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558181A (en) * | 2013-11-06 | 2014-02-05 | 郑州光力科技股份有限公司 | Online monitoring system for sulfur hexafluoride switch |
| CN108169158A (en) * | 2017-11-29 | 2018-06-15 | 全球能源互联网研究院有限公司 | A kind of gas detecting system based on gas sensor |
| CN108931481A (en) * | 2018-07-26 | 2018-12-04 | 国网重庆市电力公司南岸供电分公司 | Wide dynamic pressure measurement instrument and its measurement method applied to SF6 high-voltage switch gear |
-
2013
- 2013-11-06 CN CN201320699871.8U patent/CN203551467U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558181A (en) * | 2013-11-06 | 2014-02-05 | 郑州光力科技股份有限公司 | Online monitoring system for sulfur hexafluoride switch |
| CN108169158A (en) * | 2017-11-29 | 2018-06-15 | 全球能源互联网研究院有限公司 | A kind of gas detecting system based on gas sensor |
| CN108931481A (en) * | 2018-07-26 | 2018-12-04 | 国网重庆市电力公司南岸供电分公司 | Wide dynamic pressure measurement instrument and its measurement method applied to SF6 high-voltage switch gear |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee after: GLTECH Co.,Ltd. Address before: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee before: ZHEJIANG GUANGLI TECH DEVELOPMENT Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |