CN104793035A - Voltage sensor and voltage measurement method by adopting the same - Google Patents
Voltage sensor and voltage measurement method by adopting the same Download PDFInfo
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- CN104793035A CN104793035A CN201510144112.9A CN201510144112A CN104793035A CN 104793035 A CN104793035 A CN 104793035A CN 201510144112 A CN201510144112 A CN 201510144112A CN 104793035 A CN104793035 A CN 104793035A
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Abstract
The invention discloses a voltage sensor and a voltage measurement method by adopting the voltage sensor. The voltage sensor comprises a monochrome unpolarized light source, a first convergent lens, an electro-optical sensor, a polarization apparatus, a second convergent lens, a diaphragm and a photoelectric detector, wherein the monochrome unpolarized light source is connected with the first convergent lens through an optical fiber, the first convergent lens is fixed one side surface of the electro-optical sensor, the other side surface of the electro-optical sensor is fixed with one side surface of the polarization apparatus, the other side of the polarization apparatus is fixed with the diaphragm through quartz glass, the other side surface of the diaphragm is fixed with one side surface of the second convergent lens, and the other side surface of the second convergent lens is connected with the photoelectric detector through another optical fiber. The voltage sensor does not need a stable polarized system and a light source with the high polarized quality, and is strong in adaptability of the temperature and the environment and low in cost.
Description
Technical field
The present invention relates to a kind of sensor, relate to a kind of method of voltage sensor and measuring voltage specifically.
Background technology
Along with progressively popularizing of intelligent grid, the demand of voltage sensor or voltage transformer (VT) increases day by day.Current optical voltage sensor generally adopts the polarized light interference method based on electrooptical effect, electric field is utilized to modulate polarisation of light state, and complete the extraction to electric field signal by Polarization Detection system, the polarization characteristic of whole light path is depended on because the method is highstrung, polarization stability for light source and light path system requires high, there is cost high, the problems such as temperature stability and environmental stability difference.
Summary of the invention
The object of the present invention is to provide a kind of voltage sensor, it is without the need to the light source of stable polarized systems and high polarizing quality, and for the strong adaptability of temperature and environment, cost is low.
Another object of the present invention is to provide a kind of method adopting above-mentioned voltage sensor measuring voltage, the method measurement is accurate, cost is lower.
To achieve these goals, technical solution of the present invention is: a kind of voltage sensor, comprise monochromatic unpolarized light source, first convergent lens, electro-optical sensor, polarizer, second convergent lens, diaphragm and photodetector, described monochromatic unpolarized light source is by the first convergent lens described in Fiber connection, described first convergent lens is fixed on described electro-optical sensor one side, one side of described electro-optical sensor another side and described polarizer is fixed, the another side of described polarizer is fixed by quartz glass and described diaphragm, one side of described diaphragm another side and described second convergent lens is fixed, described second convergent lens another side is connected with described photodetector by another optical fiber.
Voltage sensor of the present invention, wherein, described diaphragm and described second convergent lens location swap, the another side of described polarizer is fixed by quartz glass and described second convergent lens, one side of described second convergent lens another side and described diaphragm is fixed, and described diaphragm another side is connected with described photodetector by optical fiber.
Voltage sensor of the present invention, wherein, described each fixed form is and is adhesively fixed, and described monochromatic unpolarized light source is light emitting diode, and described photodetector is photodiode.
Voltage sensor of the present invention, wherein, described first convergent lens is GRIN Lens or spherical lens, and described second convergent lens is GRIN Lens.
Voltage sensor of the present invention, wherein, described electro-optical sensor is electro-optic crystal or electro-optical organic material.
Voltage sensor of the present invention, wherein, described polarizer is polarized glass, and described optical fiber is multimode optical fiber.
Voltage sensor of the present invention, wherein, described diaphragm is black piezoid, and the intermediate throughholes of described diaphragm is circular, square or cruciform.
Adopt a method for above-mentioned voltage sensor measuring voltage, comprise the steps:
(1) by voltage-drop loading to be measured on electro-optical sensor,
(2) light beam monochromatic unpolarized light source being sent enters electro-optical sensor via after the first convergent lens, light beam generation conoscopic interference is made by polarizer after the beam divergence of electro-optical sensor outgoing, form interference figure, described interference figure is assembled again through convergent lens again, interference figure part after convergence from the middle light hole of diaphragm through, enter on photodetector.
The method of measuring voltage of the present invention, wherein, in described step, the first middle light hole from diaphragm of described interference figure, through assembling through convergent lens, then enters on photodetector again.
The method of measuring voltage of the present invention, wherein, in described step, the light beam that monochromatic unpolarized light source sends forms the convergent beam that convergent angle is 30 °-70 ° after the first convergent lens.
After adopting such scheme, compared with prior art because voltage sensor of the present invention comprises monochromatic unpolarized light source, the first convergent lens, electro-optical sensor, polarizer, the second convergent lens, diaphragm and photodetector, the change that the nonpolarized light adopting unpolarized light source to produce produces conoscopic interference pattern after electro-optical sensor, polarizer realizes voltage sensor, therefore less demanding to polarization stability, without the need to the light source of stable polarized systems and high polarizing quality, for the strong adaptability such as temperature and environment, cost is low, and stability is high.
The method of measuring voltage of the present invention, owing to adopting monochromatic unpolarized light source, therefore by force, stability is high, thus makes measurement result more accurate for temperature and environmental suitability.
Voltage sensor of the present invention is illustrated below in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of voltage sensor of the present invention;
Fig. 2 is the structural representation of voltage sensor embodiment one of the present invention.
Embodiment
Embodiment one
As shown in Figure 2, voltage sensor of the present invention comprises monochromatic unpolarized light source 1, first convergent lens 2, electro-optical sensor 3, polarizer 4, second convergent lens 5, diaphragm 6 and photodetector 7, monochromatic unpolarized light source 1 connects the first convergent lens 2 by multimode optical fiber, first convergent lens 2 is bonded and fixed on electro-optical sensor 3 one side by glue, one side of electro-optical sensor 3 another side and polarizer 4 is adhesively fixed by glue, the another side of polarizer 4 is adhesively fixed with quartz glass 8, another side and the diaphragm 6 of quartz glass 8 are adhesively fixed, one side of diaphragm 6 another side and the second convergent lens 5 is adhesively fixed by glue, second convergent lens 5 another side is connected with photodetector 7 by another multimode optical fiber.
In embodiment one, monochromatic unpolarized light source 1 adopts light emitting diode, its centre wavelength is 550nm, photodetector 7 adopts broad-area photodiode, first convergent lens 2 can adopt GRIN Lens or common spherical lens, second convergent lens 5 is GRIN Lens, electro-optical sensor 3 can adopt lithium columbate crystal or electro-optic crystal, also can adopt other inorganic electrooptical material or electro-optical organic materials, polarizer 4 is polarized glass, diaphragm 6 is black piezoid, and the intermediate throughholes of diaphragm 6 can be circle, square or cruciform.
Embodiment two
The present embodiment and embodiment one difference are, diaphragm 6 and the second convergent lens 5 location swap, the another side of polarizer 4 is adhesively fixed with quartz glass 8, quartz glass 8 another side is adhesively fixed the second convergent lens 5, one side of the second convergent lens 5 another side and diaphragm 6 is adhesively fixed, and diaphragm 6 another side is connected with photodetector 7 by optical fiber.
The present invention adopts the method for above-mentioned voltage sensor measuring voltage, comprises the steps:
(1) by voltage-drop loading to be measured on electro-optical sensor 3,
(2) as shown in Figure 1, the convergent beam that the light beam that monochromatic unpolarized light source 1 is sent is 30 °-70 ° via formation convergent angle after the first convergent lens 2 enters electro-optical sensor 3, light beam generation conoscopic interference is made by polarizer 4 after the beam divergence of electro-optical sensor 3 outgoing, form interference figure, interference figure is assembled again through convergent lens 5 again, interference figure part after convergence from the middle light hole of diaphragm 6 through, enter on photodetector 7.Under the effect of extra electric field, the birefringence of electro-optical sensor 3 changes, thus cause conoscopic interference pattern to change, the light distribution change at diaphragm 6 place, and then the integration total amount of the interference light passed through also changes, thus the light intensity causing photodetector 7 to detect changes thereupon, light intensity change is converted into current signal and exports by photodetector 7, just can converse tested magnitude of voltage by measuring this current signal.
In above-mentioned steps (2), interference figure also can first from the middle light hole of diaphragm 6 through assembling through convergent lens 5 again, then enter on photodetector 7.
The above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that the common engineering technical personnel in this area make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (10)
1. a voltage sensor, it is characterized in that: comprise monochromatic unpolarized light source (1), first convergent lens (2), electro-optical sensor (3), polarizer (4), second convergent lens (5), diaphragm (6) and photodetector (7), described monochromatic unpolarized light source (1) is by the first convergent lens (2) described in Fiber connection, described first convergent lens (2) is fixed on described electro-optical sensor (3) side, one side of described electro-optical sensor (3) another side and described polarizer (4) is fixed, the another side of described polarizer (4) is fixed by quartz glass (8) and described diaphragm (6), one side of described diaphragm (6) another side and described second convergent lens (5) is fixed, described second convergent lens (5) another side is connected with described photodetector (7) by another optical fiber.
2. voltage sensor as claimed in claim 1, it is characterized in that: described diaphragm (6) and described second convergent lens (5) location swap, the another side of described polarizer (4) is fixed by quartz glass (8) and described second convergent lens (5), one side of described second convergent lens (5) another side and described diaphragm (6) is fixed, and described diaphragm (6) another side is connected with described photodetector (7) by optical fiber.
3. voltage sensor as claimed in claim 1 or 2, it is characterized in that: described each fixed form is and is adhesively fixed, described monochromatic unpolarized light source (1) is light emitting diode, and described photodetector (7) is photodiode.
4. voltage sensor as claimed in claim 3, it is characterized in that: described first convergent lens (2) is GRIN Lens or spherical lens, described second convergent lens (5) is GRIN Lens.
5. voltage sensor as claimed in claim 4, is characterized in that: described electro-optical sensor (3) can adopt inorganic electrooptical material or electro-optical organic material.
6. voltage sensor as claimed in claim 5, is characterized in that: described polarizer (4) is polarized glass, and described optical fiber is multimode optical fiber.
7. voltage sensor as claimed in claim 6, it is characterized in that: described diaphragm (6) is black piezoid, the intermediate throughholes of described diaphragm (6) is circular, square or cruciform.
8. adopt a method for the arbitrary described voltage sensor measuring voltage of the claims 1-7, it is characterized in that: comprise the steps:
(1) by voltage-drop loading to be measured on electro-optical sensor (3),
(2) light beam making monochromatic unpolarized light source (1) send enters electro-optical sensor (3) via after the first convergent lens (2), light beam generation conoscopic interference is made by polarizer (4) after the beam divergence of electro-optical sensor (3) outgoing, form interference figure, described interference figure is assembled again through convergent lens (5) again, interference figure part after convergence from the middle light hole of diaphragm (6) through, enter on photodetector (7).
9. the method for measuring voltage as claimed in claim 8, it is characterized in that: in described step (2), the first middle light hole from diaphragm (6) of described interference figure, through assembling through convergent lens (5), then enters on photodetector (7) again.
10. the method for measuring voltage as claimed in claim 9, it is characterized in that: in described step (2), the light beam that monochromatic unpolarized light source (1) sends forms the convergent beam that convergent angle is 30 °-70 ° after the first convergent lens (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510144112.9A CN104793035B (en) | 2015-03-30 | 2015-03-30 | Voltage sensor and the method using voltage sensor measurement voltage |
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| CN201510144112.9A CN104793035B (en) | 2015-03-30 | 2015-03-30 | Voltage sensor and the method using voltage sensor measurement voltage |
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| CN104793035B CN104793035B (en) | 2018-04-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501571A (en) * | 2017-01-05 | 2017-03-15 | 福州大学 | Improve the dielectric stratifying method of optical voltage transformer internal electric field distribution |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63300971A (en) * | 1987-05-30 | 1988-12-08 | Hamamatsu Photonics Kk | Voltage detector |
| US5696858A (en) * | 1996-08-01 | 1997-12-09 | The Texas A&M University System | Fiber Optics apparatus and method for accurate current sensing |
| CN2775814Y (en) * | 2004-12-17 | 2006-04-26 | 华中科技大学 | Combined passive optical current/voltage mutual inductor |
| CN101226210A (en) * | 2007-01-18 | 2008-07-23 | 武汉晟思高新技术有限公司 | Reflection type polarization irrespective miniaturization photo-electricity mutual-inductor |
| CN104297552A (en) * | 2014-09-28 | 2015-01-21 | 易能乾元（北京）电力科技有限公司 | Medium-voltage optical voltage transformer |
-
2015
- 2015-03-30 CN CN201510144112.9A patent/CN104793035B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63300971A (en) * | 1987-05-30 | 1988-12-08 | Hamamatsu Photonics Kk | Voltage detector |
| US5696858A (en) * | 1996-08-01 | 1997-12-09 | The Texas A&M University System | Fiber Optics apparatus and method for accurate current sensing |
| CN2775814Y (en) * | 2004-12-17 | 2006-04-26 | 华中科技大学 | Combined passive optical current/voltage mutual inductor |
| CN101226210A (en) * | 2007-01-18 | 2008-07-23 | 武汉晟思高新技术有限公司 | Reflection type polarization irrespective miniaturization photo-electricity mutual-inductor |
| CN104297552A (en) * | 2014-09-28 | 2015-01-21 | 易能乾元（北京）电力科技有限公司 | Medium-voltage optical voltage transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106501571A (en) * | 2017-01-05 | 2017-03-15 | 福州大学 | Improve the dielectric stratifying method of optical voltage transformer internal electric field distribution |
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