CN113702682A - Non-electrical contact type remote transmission voltage transformer based on laser and working method thereof - Google Patents
Non-electrical contact type remote transmission voltage transformer based on laser and working method thereof Download PDFInfo
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- CN113702682A CN113702682A CN202111173522.8A CN202111173522A CN113702682A CN 113702682 A CN113702682 A CN 113702682A CN 202111173522 A CN202111173522 A CN 202111173522A CN 113702682 A CN113702682 A CN 113702682A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000000758 substrate Substances 0.000 claims abstract description 56
- 230000006698 induction Effects 0.000 claims abstract description 31
- 230000005684 electric field Effects 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 14
- 230000005284 excitation Effects 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 10
- 230000000737 periodic effect Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 229910002601 GaN Inorganic materials 0.000 claims description 3
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002096 quantum dot Substances 0.000 claims description 3
- 241000252254 Catostomidae Species 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 10
- 238000002955 isolation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000005291 magnetic effect Effects 0.000 description 4
- 230000005350 ferromagnetic resonance Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
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- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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- 239000008358 core component Substances 0.000 description 1
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- 238000013480 data collection Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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- 239000013307 optical fiber Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/24—Voltage transformers
- H01F38/26—Constructions
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention provides a non-electrical contact type long-distance transmission voltage transformer based on a laser and a working method thereof. The laser diode (group) consists of a laser diode and other electronic components; one port of the laser diode module is connected with the first conductive substrate, and one port of the laser diode module is connected with the second conductive substrate, so that a first conductive substrate/laser diode (group)/second conductive substrate electric induction module is formed; the electric induction module is close to the overhead high-voltage transmission line to be detected but is not in direct contact with the overhead high-voltage transmission line to be detected; the laser receiving and processing module is used for detecting the laser signal intensity of the laser diode, and the laser signal intensity reflects the detected voltage value; the insulating support module is used for realizing the electrical isolation of the electric induction module and the detected high-voltage line.
Description
Technical Field
The invention belongs to the technical field of intelligent power grids and voltage transformers, and particularly relates to a non-electrical contact type long-distance transmission voltage transformer based on a laser and a working method thereof.
Background
The safe operation of the power system is related to the development life pulse, and in the field of power grids, a voltage transformer can quickly, conveniently and accurately monitor the operation state of a power transmission line, is an indispensable instrument and is used for expanding the quantity limit and measuring voltage, power and electric energy in the actual production. At present, the ultra-high voltage of 1100kV level appears, and the traditional voltage transformer for the electromagnetic instrument is very laborious and has exposed a series of serious defects: the insulation structure is very complex, the manufacturing cost is increased rapidly, the magnetic saturation, the ferromagnetic resonance, the dynamic range is small, the frequency band is narrow, and the defects of oil, flammability, explosiveness and the like exist, although the photoelectric voltage transformer made of the electro-optical crystal using the Polex effect can overcome most of the defects, but also has the disadvantages of sensitivity to mechanical force, need of light source, high material cost, need of precise circuit debugging, and the like, is not suitable for outdoor installation, moreover, most of the voltage transformers work in a severe high-voltage environment, in order to perform monitoring and charging functions, the voltage transformers need to transmit the high-voltage measurement value of the overhead transmission line to an ammeter or monitoring equipment, and the ammeter and the monitoring equipment are both far away from the voltage transformers, therefore, a long-distance line needs to be laid, and the installation, maintenance and troubleshooting are difficult, so that the power monitoring is always a weak link of the power grid department.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention aims to provide a non-electrical contact type long-distance transmission voltage transformer based on a laser and a working method thereof.
The laser processing device comprises a first conductive substrate, a second conductive substrate, a laser diode (group), a laser receiving processing module and an insulating support module. The laser diode (group) consists of a laser diode and other electronic components; one port of the laser diode module is connected with the first conductive substrate, and one port of the laser diode module is connected with the second conductive substrate, so that a first conductive substrate/laser diode (group)/second conductive substrate electric induction module is formed; the electric induction module is close to the overhead high-voltage transmission line to be detected but is not in direct contact with the overhead high-voltage transmission line to be detected; the laser receiving and processing module is used for detecting the laser signal intensity of the laser diode, and the laser signal intensity reflects the detected voltage value; the insulating support module is used for realizing the electrical isolation of the electric induction module and the detected high-voltage line. The invention can realize long-distance transmission and real-time monitoring of the peak value, the frequency and the waveform of the overhead transmission line to be detected, has the advantages of light and compact structure, is convenient to carry, install and maintain, does not contain an iron core and a coil in a core module, eliminates magnetic saturation and ferromagnetic resonance, has strong anti-electromagnetic interference capability, wide response frequency band, excellent electrical insulation performance and low cost, and has certain market competitiveness.
The invention specifically adopts the following technical scheme:
a laser-based non-electrical contact remote transmission voltage transformer, comprising: the device comprises a first conductive substrate, a second conductive substrate, a laser diode module, a laser receiving module and an insulating support module; the laser diode module is electrically connected with the first conductive substrate and the second conductive substrate respectively to form an electric induction module; the electric induction module is arranged in an electric field generated by the overhead high-voltage transmission line, but is not in contact with the high-voltage line; the laser receiving module is used for receiving an optical signal sent by the laser diode through an atmospheric channel and converting the optical signal into an electric signal; the insulating support module is used for electrically isolating the electric induction module from the high-voltage line.
Furthermore, the first conductive substrate and the second conductive substrate are arranged at intervals, and the laser diode module is arranged between the first conductive substrate and the second conductive substrate.
Further, the laser diode module comprises at least one laser diode.
Further, the laser diode is one of a gallium nitride-based laser diode, an organic laser diode, a mu LED laser diode and a quantum dot laser diode or a combination thereof.
Further, the distance between the electric induction module and the high-voltage line to be measured ranges from 0.1cm to 50 m.
Further, the insulation medium between the electric induction module and the high-voltage line to be detected is one of air, insulating ceramic, insulating plastic or a combination thereof.
Further, the insulation support module comprises an insulation shielding shell with an opening, a lens arranged at the opening, and an insulation clamping plate used for fixing the first conductive substrate and the second conductive substrate; the lens is located on the optical path of the laser diode.
Furthermore, a plurality of fixed suckers are arranged on the outer side of the insulation shielding shell.
And, according to the above, a working method of a non-electrical contact remote transmission voltage transformer, preferably based on a laser, characterized in that: approaching the electric induction module to an overhead high-voltage transmission line, wherein a first conductive substrate and a second conductive substrate are arranged along the radial direction of the detected high-voltage line; under the excitation of high voltage, an alternating electric field is generated between the first conductive substrate and the second conductive substrate under the excitation of stably changed high voltage, and the laser diode performs periodic light output under the action of the alternating electric field; the laser receiving module receives an optical signal sent by the laser diode through an atmospheric channel and converts the optical signal into an electric signal.
Further, the laser receiving module corrects the error of the signal, and transmits the final effective voltage value to one end of a user after being digitized.
The working principle of the invention is shown in the attached figure 1 of the specification, an electric induction module is close to a detected high-voltage transmission line, the theory of an electromagnetic field can know that a vector electric field can be excited around a charged conductor, the ground is used as a reference potential, a field intensity area can be generated between the high-voltage transmission line and the ground, the electric field area meets Maxwell equation set, but because the transmission line works under power frequency voltage, the influence of the magnetic field on the electric field can be ignored, at the moment, the electric field below the overhead transmission line can be regarded as an electric quasi-static field, so that a periodically-changed potential difference can be generated between two radially-arranged polar plates arranged in the field, and electrostatic charges with opposite polarities are accumulated on the induction electrodes. When the polarity of the external voltage changes, the quantity and polarity of the electrostatic charges also change, so that the laser diode is driven to emit light when forward current flows through the LED. And laser generated by the laser diode is transmitted to the signal acquisition device through the atmospheric channel, and various parameters such as the peak value, the frequency, the waveform and the like of high voltage on the overhead transmission line to be detected can be obtained through information processing of the optical signal.
Compared with the prior art, the core component of the invention and the optimized scheme thereof only consists of two parallel substrates and a laser diode (group), compared with the traditional electromagnetic voltage transformer, a communication line is not required to be laid, the atmosphere is used as a transmission channel, and the state of the overhead transmission line to be detected is remotely transmitted to the signal acquisition module, so that compared with the traditional voltage transformer, the model has wireless long-distance transmission capability, supports the acquisition of the working state of the overhead transmission line at the far-end side, is easy to inspect and eliminate obstacles, and has no iron core and no radio coil, thereby eliminating magnetic saturation and ferromagnetic resonance, having strong anti-electromagnetic interference capability, and perfectly realizing digital processing and metering.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
fig. 1 is a schematic structural diagram of a first electric induction module according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second electric induction module according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third electric induction module according to an embodiment of the present invention.
FIG. 4 is a flow chart of an operating system according to an embodiment of the present invention.
In the figure, 101 is a first conductive substrate, 102 is a second conductive substrate, 103 is a laser diode module, 2 is an insulation shielding case, 3 is a quartz lens, 4 is an insulation clamp plate, 5 is a fixed chuck, and 6 is a resistor.
Detailed Description
In order to make the features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail as follows:
it should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 4, the non-electrical contact ac voltage transformer based on a laser diode provided in this embodiment includes an electric induction module, a laser receiving processing module, and an insulating support module. When the electric induction module is close to the overhead transmission line, under the excitation of high voltage, an alternating electric field can be generated between the two conductive substrates under the excitation of the high voltage, and the light-emitting diode (group) realizes periodic light output under the influence of the alternating electric field; the laser receiving and processing module is used for obtaining the laser intensity of the laser diode module, converting an optical signal into an electric signal through the photoelectric detection and conversion module, correcting errors of the signal through the data processing module, reducing the instability and errors of the system and finally transmitting the signal to one end of a user.
In this embodiment, the electric induction module is sequentially composed of a first conductive substrate 101, a laser diode module 103, and a second conductive substrate 102. 2 is an insulating shielding shell, 3 is a quartz lens, 4 is an insulating clamping plate, and 5 is a fixed sucker, so that an insulating supporting module is formed together.
The conductive substrate can be but not limited to a plane structure or a bending structure and a combination thereof, the shape of the conductive substrate is not limited to a rectangle, a square, a circle or an irregular shape and a combination thereof, and the two conductive substrates are not necessarily parallel to each other, and only a certain distance is required between the first conductive substrate and the second conductive substrate in the radial direction.
In this embodiment, the electric induction module is directly close to the overhead high-voltage transmission line, and under the excitation of a high voltage, an alternating electric field is generated between the first conductive substrate and the second conductive substrate under the excitation of the high voltage, and constant electrons inside the light emitting diode (group) periodically oscillate under the action of the alternating electric field, so as to realize periodic light output.
In this embodiment, the number of diodes in the laser diode module is one or two or more.
In this embodiment, the laser diode module includes, but is not limited to, a common laser diode, or includes a gallium nitride-based laser diode, an organic laser diode, a quantum dot laser diode, or a combination thereof, which can perfectly exhibit the effects of the present patent.
In this embodiment, the laser receiving and processing module uses an optical fiber as a transmission medium to collect an optical signal generated by the laser diode module between the two conductive substrates, and the photoelectric detection and conversion module converts the optical signal into an electrical signal, so that the final effective voltage value is digitized by the data collection module and the processing module and then transmitted to one end of a user.
As shown in fig. 1, fig. 1 is a relatively simple schematic diagram of an electric induction module according to the present embodiment. The sensing structure comprises a conductive substrate 101, a laser diode 103 and a conductive substrate 102. Wherein the laser diode 103 is a single common laser diode. The electric induction module is directly close to the overhead high-voltage transmission line, and under the excitation of high voltage, an alternating electric field is generated between the first conductive substrate 101 and the second conductive substrate 102 under the excitation of the high voltage, and the laser diode 103 realizes periodic light output under the action of the alternating electric field.
As shown in fig. 2, fig. 2 is a schematic structural diagram of a second electric induction module of this embodiment. The laser diode module 103 is a laser diode module formed by connecting a single laser diode with a resistor 6, and the series resistor is used for preventing the laser diode from being broken down due to overhigh voltage.
As shown in fig. 3, fig. 3 is a schematic structural diagram of a third electric induction module of this embodiment. The laser diode module 103 is a laser diode module formed by connecting a single laser diode in parallel with a resistor 6.
Fig. 2 and fig. 3 are derived models of fig. 1, and fig. 4 shows a specific operation mode of the solution under the framework of the present embodiment.
The present invention is not limited to the above preferred embodiments, and other various types of laser-based non-electrical contact remote transmission voltage transformers and methods of operating the same can be derived from the teachings of the present invention.
Claims (10)
1. A laser-based non-electrical contact remote transmission voltage transformer, comprising: the device comprises a first conductive substrate, a second conductive substrate, a laser diode module, a laser receiving module and an insulating support module; the laser diode module is electrically connected with the first conductive substrate and the second conductive substrate respectively to form an electric induction module; the electric induction module is arranged in an electric field generated by the overhead high-voltage transmission line, but is not in contact with the high-voltage line; the laser receiving module is used for receiving an optical signal sent by the laser diode through an atmospheric channel and converting the optical signal into an electric signal; the insulating support module is used for electrically isolating the electric induction module from the high-voltage line.
2. The laser-based non-electrical contact over-the-distance voltage transformer of claim 1, wherein: the first conductive substrate and the second conductive substrate are arranged at intervals, and the laser diode module is arranged between the first conductive substrate and the second conductive substrate.
3. The laser-based non-electrical contact over-the-distance voltage transformer of claim 1, wherein: the laser diode module comprises at least one laser diode.
4. The laser-based non-electrical contact over-the-distance voltage transformer of claim 3, wherein: the laser diode is one of or a combination of a gallium nitride-based laser diode, an organic laser diode, a mu LED laser diode and a quantum dot laser diode.
5. The laser-based non-electrical contact over-the-distance voltage transformer of claim 1, wherein: the distance range between the electric induction module and the high-voltage line to be measured is 0.1 cm-50 m.
6. The laser-based non-electrical contact over-the-distance voltage transformer of claim 1, wherein: the insulation medium between the electric induction module and the high-voltage wire to be detected is one of air, insulating ceramic and insulating plastic or the combination of the air and the insulating ceramic and the insulating plastic.
7. The laser-based non-electrical contact over-the-distance voltage transformer of claim 1, wherein: the insulating support module comprises an insulating shielding shell with an opening, a lens arranged at the opening and an insulating clamping plate used for fixing the first conductive substrate and the second conductive substrate; the lens is located on the optical path of the laser diode.
8. The laser-based non-electrical contact over-the-distance voltage transformer of claim 7, wherein: and a plurality of fixed suckers are arranged on the outer side of the insulation shielding shell.
9. The method of operating a laser-based non-electrical contact remote transmission voltage transformer according to any of claims 1-8, wherein: approaching the electric induction module to an overhead high-voltage transmission line, wherein a first conductive substrate and a second conductive substrate are arranged along the radial direction of the detected high-voltage line; under the excitation of high voltage, an alternating electric field is generated between the first conductive substrate and the second conductive substrate under the excitation of stably changed high voltage, and the laser diode performs periodic light output under the action of the alternating electric field; the laser receiving module receives an optical signal sent by the laser diode through an atmospheric channel and converts the optical signal into an electric signal.
10. The method of claim 9, wherein the laser-based non-electrical contact remote transmission voltage transformer comprises: and the laser receiving module corrects the error of the signal, digitizes the final effective voltage value and transmits the digitized final effective voltage value to one end of a user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111173522.8A CN113702682A (en) | 2021-10-09 | 2021-10-09 | Non-electrical contact type remote transmission voltage transformer based on laser and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111173522.8A CN113702682A (en) | 2021-10-09 | 2021-10-09 | Non-electrical contact type remote transmission voltage transformer based on laser and working method thereof |
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| CN113702682A true CN113702682A (en) | 2021-11-26 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5006846A (en) * | 1987-11-12 | 1991-04-09 | Granville J Michael | Power transmission line monitoring system |
| US20130293218A1 (en) * | 2012-05-03 | 2013-11-07 | Institut National D'optique | Optical sensor for non-contact voltage measurement |
| CN103969489A (en) * | 2014-05-19 | 2014-08-06 | 重庆大学 | Non-contact type overvoltage sensor based on electro-optic effect |
| CN104166075A (en) * | 2014-07-21 | 2014-11-26 | 华北电力大学（保定） | Partial-discharge photoelectric detection system and method based on laser diode |
| CN109557357A (en) * | 2018-12-27 | 2019-04-02 | 国网江苏省电力有限公司电力科学研究院 | Contactless voltage surveys recording device, system and method |
| WO2019086932A1 (en) * | 2017-11-01 | 2019-05-09 | Institut National D' Optique | Optical sensor for voltage measurement |
| CN208999476U (en) * | 2018-10-16 | 2019-06-18 | 信电电器集团有限公司 | A kind of optical fiber type voltage transformer |
| CN110690328A (en) * | 2019-10-16 | 2020-01-14 | 福州大学 | No-electrical contact mu LED light-emitting device based on wavelength down-conversion |
-
2021
- 2021-10-09 CN CN202111173522.8A patent/CN113702682A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5006846A (en) * | 1987-11-12 | 1991-04-09 | Granville J Michael | Power transmission line monitoring system |
| US20130293218A1 (en) * | 2012-05-03 | 2013-11-07 | Institut National D'optique | Optical sensor for non-contact voltage measurement |
| CN103969489A (en) * | 2014-05-19 | 2014-08-06 | 重庆大学 | Non-contact type overvoltage sensor based on electro-optic effect |
| CN104166075A (en) * | 2014-07-21 | 2014-11-26 | 华北电力大学（保定） | Partial-discharge photoelectric detection system and method based on laser diode |
| WO2019086932A1 (en) * | 2017-11-01 | 2019-05-09 | Institut National D' Optique | Optical sensor for voltage measurement |
| CN208999476U (en) * | 2018-10-16 | 2019-06-18 | 信电电器集团有限公司 | A kind of optical fiber type voltage transformer |
| CN109557357A (en) * | 2018-12-27 | 2019-04-02 | 国网江苏省电力有限公司电力科学研究院 | Contactless voltage surveys recording device, system and method |
| CN110690328A (en) * | 2019-10-16 | 2020-01-14 | 福州大学 | No-electrical contact mu LED light-emitting device based on wavelength down-conversion |
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