CN205178263U - Laser trigger system based on optical fiber transmission - Google Patents
Laser trigger system based on optical fiber transmission Download PDFInfo
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- CN205178263U CN205178263U CN201521031759.2U CN201521031759U CN205178263U CN 205178263 U CN205178263 U CN 205178263U CN 201521031759 U CN201521031759 U CN 201521031759U CN 205178263 U CN205178263 U CN 205178263U
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- laser
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- fiber transmission
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- gap
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 49
- 230000005540 biological transmission Effects 0.000 title claims abstract description 45
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims abstract description 4
- 238000007599 discharging Methods 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 238000011160 research Methods 0.000 abstract description 5
- 230000001960 triggered effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- 230000005684 electric field Effects 0.000 description 4
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model provides a laser trigger system based on optical fiber transmission, including laser instrument, coupler, optic fibre and discharge gap, the laser that the laser instrument sent gets into the coupler, and the laser of process coupler coupling passes through optical fiber transmission to discharge gap. The utility model provides a laser trigger system based on optical fiber transmission behind the adoption optical fiber transmission nanosecond level laser, can realize laser pulse's long distance free routing transmission to the reliability that discharge gap triggered has been improved, the utility model provides a laser trigger system uses extensively, uses this laser trigger system and has develoied a large amount of discharge test researchs that trigger, has gained abundant tentation data, lays a good foundation for laser trigger gap's research and engineering application.
Description
Technical field
The utility model relates to and belongs to electrical equipment technical field, is specifically related to a kind of laser triggering system based on Optical Fiber Transmission.
Background technology
From calendar year 2001, China Electric Power Research Institute starts independent research transmission line of alternation current series compensation complete set of equipments, and current all devices all realizes production domesticization, and has complete independent intellectual property right.Spark gap, as the main protecting equipment of series capacitor compensation group and metal oxide pressure-limiting device, is mended in complete set of equipments at string and is occupied critical role, is the safe and reliable key equipment of series compensation device.
Laser triggering gap discharge generally more to be applied in the switching technique in pulse power field, for reducing switch from fluttering, reduces trigger delay etc.In electric power system, discharging gap application is also comparatively extensive, the spark gap in one of them important application and transmission line of alternation current series compensation device.Spark gap is the main proterctive equipment that string mends in device; for series capacitor compensation group and voltage limiter provide main protection; although the spark gap operation principle that different company provides is different, substantially all belongs to and control flip-over type (or being called forced-triggered type) spark gap.The electric discharge of laser triggering gas gap is applied to string mends in spark gap, can discharge by control gap better, and significantly improve the functional reliability that string mends gap.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of laser triggering system based on Optical Fiber Transmission, after adopting Optical Fiber Transmission nanosecond laser, the long distance free routing transmission of laser pulse can be realized, and improve the reliability of discharging gap triggering.
To achieve these goals, the utility model takes following scheme:
The utility model provides a kind of laser triggering system based on Optical Fiber Transmission, and described laser triggering system comprises laser, coupler, optical fiber and discharging gap; The laser that described laser sends enters coupler, through coupler coupling laser by Optical Fiber Transmission to discharging gap.
The laser that described laser sends and through coupler coupling laser be nanosecond laser.
Described discharging gap comprises high-field electrode and low-field electrode.
Described low-field electrode is provided with through hole, and described through hole is circular hole, and the diameter of described circular hole is 3 ~ 10mm.
The nanosecond laser that described laser sends enters coupler and is coupled, through the nanosecond laser of overcoupling by Optical Fiber Transmission to discharging gap, lens are provided with between described optical fiber and low-field electrode, through the nanosecond laser of lens by circular hole, realize nanosecond laser straight and connect triggering discharges gap discharge or nanosecond Laser Focusing to the surperficial triggering discharges gap discharge of high-field electrode.
Distance between described high-field electrode and low-field electrode is 10 ~ 30mm.
Described distance between high-field electrode and low-field electrode is 15 ~ 25mm.
Described laser is gas laser, and described gas laser is lamp pump pulse laser.
Described coupler is directional coupler.
Described optical fiber is grade silica fiber.
Described discharging gap is air gap.
Compared with immediate prior art, the technical scheme that the utility model provides has following beneficial effect:
1) Optical Fiber Transmission nanosecond laser, and then have not by the advantage of atmosphere environment impact by the discharging gap of laser triggering;
2), after adopting Optical Fiber Transmission nanosecond laser, the long distance free routing transmission of nanosecond laser can be realized;
3), after adopting Optical Fiber Transmission nanosecond laser, improve the reliability that air gap is triggered;
4) the laser triggering system that the utility model provides is widely used, and applies this laser triggering system and has carried out a large amount of triggering discharges experimental studies, achieve abundant test data, for the research in laser triggering gap and engineer applied are laid a good foundation.
Accompanying drawing explanation
Fig. 1 is the laser triggering system construction drawing based on Optical Fiber Transmission.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The utility model provides a kind of laser triggering system based on Optical Fiber Transmission, and as Fig. 1, described laser triggering system comprises laser, coupler, optical fiber and discharging gap; The laser that described laser sends enters coupler, through coupler coupling laser by Optical Fiber Transmission to discharging gap.
The laser that described laser sends and through coupler coupling laser be nanosecond laser.
Described discharging gap comprises high-field electrode and low-field electrode, and the material that described high-field electrode and low-field electrode adopt is copper.
Described low-field electrode is provided with through hole, and described through hole is circular hole, and the diameter of described circular hole is 3 ~ 10mm.
The nanosecond laser that described laser sends enters coupler and is coupled, through the nanosecond laser of overcoupling by Optical Fiber Transmission to discharging gap, lens are provided with between described optical fiber and low-field electrode, through the nanosecond laser of lens by circular hole, realize nanosecond laser straight and connect triggering discharges gap discharge or nanosecond Laser Focusing to the surperficial triggering discharges gap discharge of high-field electrode.
Distance between described high-field electrode and low-field electrode is 10 ~ 30mm.
Described distance between high-field electrode and low-field electrode is 15 ~ 25mm.
Described laser is gas laser, and described gas laser is lamp pump pulse laser.
Described coupler is directional coupler.
Described optical fiber is grade silica fiber.
Described discharging gap is air gap.
When the nano second laser pulse that laser produces focuses in discharging gap, if nanosecond laser energy is enough large, focus and neighbouring air thereof will discharge, and developing rapidly under electric field action becomes sparkover passage, makes discharging gap conducting.The impact transmitted in atmosphere by atmospheric environment due to nanosecond laser is comparatively large, and after the long range propagation of more than tens meters of even hundreds of rice is carried out in very difficult guarantee, nanosecond laser directly focuses on required position again and makes air ionization.Simultaneously; string is mended device spark gap and is arranged on on the series compensation platform of circuit same potential; distance ground is generally more than 5m; and can ensure that the string that laser stabilization runs mends more than the hundreds of rice of Control protection cell general distance series compensation platform, laser is difficult to directly be transferred in spark gap by air to realize the triggering in reliable gap.
The nanosecond laser that laser produces enters coupler, output in coupler in optical fiber, nanosecond laser is by the air gap of Optical Fiber Transmission to applying certain voltage, along the through hole that low-field electrode is axially reserved after scioptics, focusing between electrode axially a certain position causes air ionization to form plasma, electric field between distortion electrode thus cause gap triggering and conducting.The nanosecond laser straight that such laser sends connected Optical Fiber Transmission to air gap, avoided the impact of the barrier that the atmospheric environment and light path directly transmitting in atmosphere and be subject to may exist, thus improve the reliability of gap triggering discharges.Such nanosecond laser can along arbitrarily bending Optical Fiber Transmission, avoid nanosecond laser straight and connect the problem that transmission range in atmosphere longer and the laser output of laser and required Laser Focusing point do not need when same plane Multiple through then out lens to roll over, reflect, improve the range of application in laser triggering gap.
The laser triggering system based on Optical Fiber Transmission that the utility model provides can be applied to following laser and is difficult to or directly cannot transmits in atmosphere but need in the discharging gap triggered, laser works can guaranteed in the environment of its safe and reliable operation, after Optical Fiber Transmission:
1) laser triggering air gap electric discharge
As previously described, the laser pulse of enough energy is by Optical Fiber Transmission in air gap, and scioptics to focus between electrode certain a bit causes gas ionization to form plasma, electric field between distortion electrode thus cause gap triggering and conducting.Except the air gap opened wide, also can be applicable to fill in the air gap of gas with various, as gas or compressed air etc. such as SF6.
2) Laser Focusing discharges to electrode surface triggered gap
By the Laser Focusing of Optical Fiber Transmission in surface of metal electrode, the metal of its focal spot produces plasma, the electric field between this plasma abnormalization two electrode, thus causes gap discharge.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; those of ordinary skill in the field still can modify to embodiment of the present utility model with reference to above-described embodiment or equivalent replacement; these do not depart from any amendment of the utility model spirit and scope or equivalent replacement, are all applying within the claims of the present utility model awaited the reply.
Claims (11)
1. based on a laser triggering system for Optical Fiber Transmission, it is characterized in that: described laser triggering system comprises laser, coupler, optical fiber and discharging gap; The laser that described laser sends enters coupler, through coupler coupling laser by Optical Fiber Transmission to discharging gap.
2. the laser triggering system based on Optical Fiber Transmission according to claim 1, is characterized in that: the laser that described laser sends and the laser through coupler coupling are nanosecond laser.
3. the laser triggering system based on Optical Fiber Transmission according to claim 2, is characterized in that: described discharging gap comprises high-field electrode and low-field electrode.
4. the laser triggering system based on Optical Fiber Transmission according to claim 3, is characterized in that: described low-field electrode is provided with through hole, and described through hole is circular hole, and the diameter of described circular hole is 3 ~ 10mm.
5. the laser triggering system based on Optical Fiber Transmission according to claim 4, it is characterized in that: the nanosecond laser that described laser sends enters coupler and is coupled, through the nanosecond laser of overcoupling by Optical Fiber Transmission to discharging gap, lens are provided with between described optical fiber and low-field electrode, through the nanosecond laser of lens by circular hole, realize nanosecond laser straight and connect triggering discharges gap discharge or nanosecond Laser Focusing to the surperficial triggering discharges gap discharge of high-field electrode.
6. the laser triggering system based on Optical Fiber Transmission according to claim 3, is characterized in that: the distance between described high-field electrode and low-field electrode is 10 ~ 30mm.
7. the laser triggering system based on Optical Fiber Transmission according to claim 6, is characterized in that: described distance between high-field electrode and low-field electrode is 15 ~ 25mm.
8. the laser triggering system based on Optical Fiber Transmission according to claim 1, is characterized in that: described laser is gas laser, described gas laser is lamp pump pulse laser.
9. the laser triggering system based on Optical Fiber Transmission according to claim 1, is characterized in that: described coupler is directional coupler.
10. the laser triggering system based on Optical Fiber Transmission according to claim 1, is characterized in that: described optical fiber is grade silica fiber.
The 11. laser triggering systems based on Optical Fiber Transmission according to claim 1, is characterized in that: described discharging gap is air gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031759.2U CN205178263U (en) | 2015-12-11 | 2015-12-11 | Laser trigger system based on optical fiber transmission |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031759.2U CN205178263U (en) | 2015-12-11 | 2015-12-11 | Laser trigger system based on optical fiber transmission |
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| CN205178263U true CN205178263U (en) | 2016-04-20 |
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| CN201521031759.2U Active CN205178263U (en) | 2015-12-11 | 2015-12-11 | Laser trigger system based on optical fiber transmission |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106646161A (en) * | 2016-12-15 | 2017-05-10 | 中国电力科学研究院 | Device and method for measuring discharging parameter of gap discharge under laser guiding |
| CN106877177A (en) * | 2015-12-11 | 2017-06-20 | 中国电力科学研究院 | A kind of laser triggering system based on Optical Fiber Transmission |
| CN109521342A (en) * | 2018-12-29 | 2019-03-26 | 云南电网有限责任公司电力科学研究院 | A kind of method and system optically recording and diagnose switch breakdown |
| CN109565155A (en) * | 2016-08-17 | 2019-04-02 | 通用电气公司 | Utilize the gap without krypton -85 of photoemission |
| CN112394268A (en) * | 2019-08-16 | 2021-02-23 | 许继集团有限公司 | Impulse voltage wave chopping device |
-
2015
- 2015-12-11 CN CN201521031759.2U patent/CN205178263U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877177A (en) * | 2015-12-11 | 2017-06-20 | 中国电力科学研究院 | A kind of laser triggering system based on Optical Fiber Transmission |
| CN106877177B (en) * | 2015-12-11 | 2018-12-11 | 中国电力科学研究院 | A kind of laser triggering system based on optical fiber transmission |
| CN109565155A (en) * | 2016-08-17 | 2019-04-02 | 通用电气公司 | Utilize the gap without krypton -85 of photoemission |
| CN109565155B (en) * | 2016-08-17 | 2020-11-10 | 通用电气公司 | Krypton-85-free spark gap using photoemission |
| CN106646161A (en) * | 2016-12-15 | 2017-05-10 | 中国电力科学研究院 | Device and method for measuring discharging parameter of gap discharge under laser guiding |
| CN109521342A (en) * | 2018-12-29 | 2019-03-26 | 云南电网有限责任公司电力科学研究院 | A kind of method and system optically recording and diagnose switch breakdown |
| CN112394268A (en) * | 2019-08-16 | 2021-02-23 | 许继集团有限公司 | Impulse voltage wave chopping device |
| CN112394268B (en) * | 2019-08-16 | 2023-11-17 | 许继集团有限公司 | Impulse voltage wave cutting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170503 Address after: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Co-patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Co-patentee after: State Grid Zhejiang Electric Power Company Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15 Co-patentee before: State Grid Corporation of China Patentee before: China Electric Power Research Institute |
|
| TR01 | Transfer of patent right |