CN107703373A - Broadband electric field measuring device - Google Patents
Broadband electric field measuring device Download PDFInfo
- Publication number
- CN107703373A CN107703373A CN201711091048.8A CN201711091048A CN107703373A CN 107703373 A CN107703373 A CN 107703373A CN 201711091048 A CN201711091048 A CN 201711091048A CN 107703373 A CN107703373 A CN 107703373A
- Authority
- CN
- China
- Prior art keywords
- electric field
- optical signal
- induction electrode
- shielding shell
- modulated optical
- Prior art date
- 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.)
- Pending
Links
- 230000005684 electric field Effects 0.000 title claims abstract description 51
- 230000006698 induction Effects 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 34
- 239000011810 insulating material Substances 0.000 claims abstract description 6
- 230000003287 optical effect Effects 0.000 claims description 43
- 239000000835 fiber Substances 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- ORCSMBGZHYTXOV-UHFFFAOYSA-N bismuth;germanium;dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Ge].[Ge].[Ge].[Bi].[Bi].[Bi].[Bi] ORCSMBGZHYTXOV-UHFFFAOYSA-N 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0842—Measurements related to lightning, e.g. measuring electric disturbances, warning systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0878—Sensors; antennas; probes; detectors
- G01R29/0885—Sensors; antennas; probes; detectors using optical probes, e.g. electro-optical, luminescent, glow discharge, or optical interferometers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The application provides a wide band electric field measuring device relates to electric field measurement technical field, can measure the quasi-static electric field component of low frequency and the high frequency radiation electric field component of wide band thunder electric field. The device includes: the device comprises an induction electrode, a shielding shell, a secondary voltage division capacitor and a voltage sensor, wherein the shielding shell is grounded, and the shielding shell is connected with the induction electrode through an insulating material; the secondary voltage division capacitor and the voltage sensor are arranged in the shielding shell; the induction electrode is connected with the high-voltage end of the secondary voltage-dividing capacitor; the secondary voltage-dividing capacitor is connected with the voltage sensor in parallel.
Description
Technical field
The application is related to technical field of electric field measurement, more particularly to a kind of device of wideband electric field measurement.
Background technology
Thunder and lightning is one of ten the Nature disasters that the United Nations announces.Lightning discharge is to railway traffic, ultra-high-tension power transmission line etc.
Facility has very strong interference, destruction.In order to preferably predict thunder and lightning, the physical effect of thunder and lightning need to accordingly be ground
Study carefully.Wherein, measure lightning discharge caused by electric field waveform be research understanding lightning discharge physical effect most basic means it
One.
At present, lightning discharge electric field is measured mainly using fast, the slow electric field change instrument.Wherein, fast electric field change instrument and slow electricity
The operation principle of field change instrument is essentially the same, and by taking fast electric field change instrument as an example, fast electric field change instrument mainly includes two units：Sense
Answer antenna and integrating circuit.Wherein, integrating circuit includes resistance 1, resistance 2 1042, electric capacity 1043 and operational amplifier
1044。
It is the operation principle of fast electric field change instrument as shown in Figure 1：(1) due to when environment of electric field changes, metal sense
The quantity of electric charge for answering electrode 101 to be sensed changes, and therefore, is changed by measuring the quantity of electric charge on metal induction electrode 101, can
To be finally inversed by the change of airspace electric field.(2) metal induction electrode 101 phase of the integrating circuit through signal cable 103 with leading portion
Connection, so as to carry out integration amplification, and final output integral voltage to the induced-current of metal induction electrode 101.
Generally, fast electric field change instrument is used for the radiation field for measuring lightning, wherein, the integration time constant of integrating circuit
2ms is usually arranged as, the frequency bandwidth of fast electric field change instrument measurement is 100Hz to 3.8MHz.The slow electric field change instrument is used to measure
Quasi-static electric field component in lightning, wherein, the integration time constant of integrating circuit is usually arranged as 6s, and the slow electric field change instrument is surveyed
The frequency bandwidth of amount is 1Hz to 3.2MHz.
Lightning electric field bandwidth range still, is limited up to MHz magnitudes by integrating circuit bandwidth, it is necessary to respectively using one it is fast,
Slow flash electric field changes instrument, while the thunder and lightning field of wideband is measured, and could capture the quasi-static field point of lightning electric field simultaneously
Amount and radiation field, in addition, even if above-mentioned fast, the slow electric field change instrument is used simultaneously, fast, the slow electric field change instrument works simultaneously when
The bandwidth that can be measured is still less than 5MHz.
Therefore, above-mentioned traditional fast, slow flash electric field change instrument can not fully meet the wideband of near region lightning discharge electric field
Measurement request, lead to not provide effective thunder And Lightning Preventive Measures according to measurement data.
The content of the invention
The application provides a kind of device of wideband electric field measurement, can be to the low frequency quasi-static electric field component of wideband thunder and lightning field
Measured with high frequency radiation electric field component, so as to provide effective thunder And Lightning Preventive Measures according to measurement data.
To reach above-mentioned purpose, the device of the application includes：Induction electrode, shielding shell, second divided voltage electric capacity, voltage pass
Sensor；
The shielding earthing of casing, it is connected between the shielding shell and the induction electrode by insulating materials；
The second divided voltage electric capacity and the voltage sensor are arranged on the inside of the shielding shell；
The induction electrode is connected with the high-pressure side of the second divided voltage electric capacity；
The second divided voltage electric capacity is in parallel with the voltage sensor.
With in the prior art, being limited by integrating circuit bandwidth, Measurement bandwidth is smaller, can not meet the measurement of wideband thunder and lightning field
It is required that comparing, the device for the wideband electric field measurement that the application provides, the earthing of casing is shielded, shields and leads between shell and induction electrode
Cross insulating materials to be connected, second divided voltage electric capacity and voltage sensor are arranged on the inside for shielding shell；Induction electrode and secondary
The high-pressure side of derided capacitors is connected；Second divided voltage electric capacity is in parallel with voltage sensor, i.e., in this application, passes through second divided voltage
Electric capacity and voltage sensor composition circuit come measure induction electrode sensing wideband electric field, avoid and measured using integrating circuit
The problem of Measurement bandwidth caused by wideband electric field is limited, the wideband measurement demand of thunder and lightning field can be met, and can utilize and survey
Amount data are analyzed atmospheric electrical phenomena, and then provide effective lightning protected measure.
Brief description of the drawings
Fig. 1 is the structural representation of the circuit of traditional measurement thunder and lightning field；
Fig. 2 is the structural representation of the device for the wideband electric field measurement that the embodiment of the present application provides；
Fig. 3 is the structural representation for the electro-optical sensor that the embodiment of the present application provides.
Description of reference numerals：
101- metal induction electrodes；102- ground capacities；
103- signal cables；104- integrating circuit；
1041- resistance one；1042- resistance two；
1043- electric capacity；1044- operational amplifiers；
201- induction electrodes；202- shields shell；
203- second divided voltage electric capacity；204- voltage sensors；
2041- lasing light emitters；2042- electro-optical sensors；
2043- demodulator circuits；205- drying tubes；
206- is grounded pillar；207- high-speed collection cards；
208- computers；
The 301- polarizers；302- bismuth-germanium-oxide crystals；
303- phase delay slides；304- analyzers；
305- collimaters.
Embodiment
The device measured below in conjunction with the accompanying drawings the wideband electric field that the embodiment of the present application provides is described in detail.
In addition, the term " comprising " and " having " being previously mentioned in the description of the present application and their any deformation, it is intended that
It is to cover non-exclusive include.Such as process, method, system, product or the equipment for containing series of steps or unit do not have
The step of being defined in the step of having listed or unit, but not listed including other also alternatively or unit, or alternatively
Also include for the intrinsic other steps of these processes, method, product or equipment or unit.
It should be noted that in the embodiment of the present application, " exemplary " or " such as " etc. word make example, example for expression
Card or explanation.Be described as in the embodiment of the present application " exemplary " or " such as " any embodiment or design should
It is interpreted than other embodiments or design more preferably or more advantage.Specifically, " exemplary " or " example are used
Such as " word is intended to that related notion is presented in a concrete fashion.
In the description of the present application, unless otherwise indicated, the implication of " multiple " refers to two or more.
In order to solve that the wideband measurement demand of thunder and lightning field can not be met in the prior art, lead to not be carried according to measurement data
For effective thunder And Lightning Preventive Measures, the embodiment of the present application provides a kind of device of wideband electric field measurement, as shown in Fig. 2 the device
Including：Induction electrode 201, shielding shell 202, second divided voltage electric capacity 203, voltage sensor 204.
Wherein, shielding shell 202 is grounded, and is shielded and is connected between shell 202 and induction electrode 201 by insulating materials,
Second divided voltage electric capacity 203 and voltage sensor 204 are arranged on the inside of shielding shell 202.As a kind of possible implementation,
The isolation connection of epoxy insulation material can be used by shielding between shell 202 and induction electrode 201.
Induction electrode 201 is connected with the high-pressure side of second divided voltage electric capacity 203, second divided voltage electric capacity 203 and voltage sensor
Device 204 is in parallel.
Wherein, induction electrode 201, for sensing wideband thunder and lightning field signal；Second divided voltage electric capacity 203 and voltage sensor
The circuit of 204 compositions, the optical signal that the thunder and lightning field signal control lasing light emitter 2041 for being sensed using induction electrode 201 is exported,
So as to which the optical signal modulation for exporting lasing light emitter 2041 is modulated optical signal, then modulated optical signal is transmitted to long-range solution
Circuit 2043 is adjusted, modulated optical signal is demodulated into thunder and lightning field signal by demodulator circuit 2043, the thunder and lightning field signal is via radio frequency
Cable transmission to high-speed collection card 207, high-speed collection card 207 is digitized to the thunder and lightning field signal of acquisition, obtains thunder and lightning field
Data signal corresponding to signal, then, pass through the interface between high-speed collection card 207 and computer 208, high-speed collection card 207
By thunder and lightning field digital data transmission to computer 208, to cause administrative staff by computer 208 to corresponding to wideband thunder and lightning field
Data signal is analyzed.
Alternatively, induction electrode 201 can be dome electrode.For example, using the dome electrode of red copper material, and directly
Footpath is 10cm to 15cm.
It should be noted that with the prior art, induction electrode use the more significant tapered shape of point effect electricity
Pole is compared, and the contact area between dome electrode and thunder and lightning field is larger, it is not easy to point effect is produced, and then, avoid strong
Thunder and lightning field produces corona discharge phenomenon at electrode, also implies that, can mitigate corona discharge electric field to that actually need to measure
The interference of thunder and lightning field, improve the accuracy of measurement of thunder and lightning field.
Alternatively, second divided voltage electric capacity 203 is 0.1 μ F magnitudes.
In the embodiment of the present application, voltage sensor 204 includes:Lasing light emitter 2041, electro-optical sensor 2042 and demodulation electricity
Road 2043.Wherein, the structure of electro-optical sensor 2042 is as shown in figure 3, electro-optical sensor 2042 includes the polarizer 301, bismuth germanium oxide
Crystal 302, phase delay slide 303, analyzer 304, collimater 305.
As a kind of possible implementation, lasing light emitter 2041 is located at management end, and the optical signal that lasing light emitter 2041 exports leads to
Multimode fibre is crossed to transmit to the polarizer 301.
Afterwards, the optical signals polarizer 301 that lasing light emitter 2041 exports passes, and sequentially passes through bismuth-germanium-oxide crystal 302, phase
Position delay slide 303, analyzer 304, analyzer 304 export modulated optical signal, then, by collimater 305 by modulated light
Signal is coupled to multimode fibre, and modulated optical signal is transmitted to the demodulator circuit 2043 of management end via multimode fibre.So as to take
Modulated optical signal with thunder and lightning field signal is transmitted to long-range management end, so as to administrative staff couple by the induction end of thunder and lightning field
Measurement result is observed, analyzed.
Alternatively, the lasing light emitter 2041 of management end uses wavelength as 850nm, and the F-P wavelength with temperature control link
Locked laser diode, and the extinction ratio of lasing light emitter 2041 is 30dB, to ensure that modulated optical signal is reaching demodulator circuit
After 2043, demodulator circuit 2043 can more delicately handle modulated optical signal.
Preferably, bismuth-germanium-oxide crystal 302 uses longitudinal modulation, and thunder and lightning field signal modulation lasing light emitter 2041 is utilized to be lifted
Sensitivity.
Alternatively, phase delay slide 303 is that zero order phase postpones slide, to obtain broader frequency band, mitigates electric light and passes
The sensitivity that sensor 2042 changes to temperature and the wavelength of optical signal of lasing light emitter 2041.
Alternatively, the operating distance of collimater 305 is 5.7cm.
In the embodiment of the present application, the demodulator circuit 2043 of management end includes optical compensator, the silicon detector being sequentially connected
With two-stage amplifying circuit, optical compensator, the modulated optical signal of multimode fibre transmission is received, detects the strong of modulated optical signal
Degree, and the intensity based on modulated optical signal, the light signal strength that regulation lasing light emitter 2041 exports, silicon detector, for demodulating
Modulated optical signal, to obtain thunder and lightning field signal, two-stage amplifying circuit, for being amplified to the thunder and lightning field signal after demodulation,
So that follow-up process uses.
Specifically, in the embodiment of the present application, during modulated optical signal transmits, due to multimode fibre shake etc.
Factor, the intensity of modulated optical signal can decay, in order to ensure that silicon detector can enter to modulated optical signal exactly
Row demodulation, need to ensure the intensity of modulated optical signal transmitted to silicon detector.Based on this, in the embodiment of the present application, light is mended
Device is repaid to detect the intensity of the modulated optical signal of reception, if the intensity of modulated optical signal is less than intensity threshold,
Optical compensator adjusts the driving current of lasing light emitter 2041, so as to increase the intensity of the optical signal of the output of lasing light emitter 2041, with compensation
The decay of modulated optical signal.Wherein, intensity threshold can be limited not to this here according to actual use situation setting
System.
In addition, with the prior art, charging current caused by metal induction electrode 201, being transmitted through signal cable 103 to product
Parallel circuit 104, cause charging current easily to be disturbed by thunderstorm etc., influence measurement accuracy and compare, in the embodiment of the present application, utilize hemisphere
Optical signal caused by the wideband thunder and lightning field signal control lasing light emitter 2041 that shape induction electrode 201 senses, produces modulated optical signal,
So as to transmit modulated optical signal by multimode fibre, reduce the interference to modulated optical signal such as thunderstorm, and then can carry
Rise the precision of measurement wideband electric field.
In the above-mentioned methods, alternatively, the operation wavelength of silicon detector is 850nm.
As a kind of possible implementation, in the embodiment of the present application, induction electrode 201 and shielding shell 202 are adopted
Sealed with waterproof material, also, shield shell 202 and be connected with drying tube 205, to ensure that the inside of shielding shell 202 is in drying
Environment.Alternatively, drying tube 205 is placed in the outside of shielding shell 202, for indicating the humidity inside shielding shell 202, so as to
The drying tube 205 that administrative staff more renew according to indicated result.
The bottom for shielding shell 202 is connected with ground connection pillar 206, and ground connection pillar 206 is fixed on ground or roof so that
Height of the shell 202 apart from ground is shielded to adjust in the range of 0.5-1m.
With in the prior art, being limited by integrating circuit bandwidth, Measurement bandwidth is smaller, measurement data can not be utilized to provide effective
Lightning protected measure compare, the device for the wideband electric field measurement that the application provides, first, the earthing of casing will be shielded, shielding is outer
It is connected between shell and induction electrode by insulating materials, and second divided voltage electric capacity and voltage sensor is arranged on shielding shell
Inside, induction electrode is connected with the high-pressure side of second divided voltage electric capacity, and second divided voltage electric capacity is in parallel with voltage sensor, that is, exists
In the application, the wideband electric field that induction electrode senses is measured by the circuit of second divided voltage electric capacity and voltage sensor composition,
The problem of using the Measurement bandwidth caused by integrating circuit measurement wideband electric field limited is avoided, so as to measure wideband simultaneously
Low frequency quasi-static electric field component and high frequency radiation electric field component in thunder and lightning field, and measurement data analysis thunder and lightning field can be utilized,
And then provide effective lightning protected measure.
The method measured by test, the wideband electric field provided using the embodiment of the present application, it is ensured that optical signal power
Decay change in the range of ± 3%, and the distance that optical signal transmits in multimode fibre is not less than 200m.
In addition, in the embodiment of the present application, the frequency band range of measurement can reach 3Hz to 30MHz.
Described above, the only embodiment of the application, but the protection domain of the application is not limited thereto is any
Change or replacement in the technical scope that the application discloses, should all cover within the protection domain of the application.Therefore, this Shen
Protection domain please should be defined by scope of the claims.
Claims (4)
1. a kind of device of wideband electric field measurement, it is characterised in that described device includes：Induction electrode, shielding shell, secondary point
Voltage capacitance, voltage sensor, the shielding earthing of casing, pass through insulating materials between the shielding shell and the induction electrode
It is connected；
The second divided voltage electric capacity and the voltage sensor are arranged on the inside of the shielding shell；
The induction electrode is connected with the high-pressure side of the second divided voltage electric capacity；
The second divided voltage electric capacity is in parallel with the voltage sensor.
2. the device of wideband electric field measurement according to claim 1, it is characterised in that the induction electrode is hemispherical electricity
Pole.
3. the device of wideband electric field measurement according to claim 2, it is characterised in that the voltage sensor includes:Swash
Light source, electro-optical sensor, multimode fibre and demodulator circuit；
The electro-optical sensor includes the polarizer, bismuth-germanium-oxide crystal, phase delay slide, analyzer, collimater, the lasing light emitter
The optical signal of output sequentially passes through the polarizer, bismuth-germanium-oxide crystal, phase delay slide, analyzer, and the analyzer is used for
Modulated optical signal is exported, the modulated optical signal is coupled to the multimode fibre by collimater, and the bismuth germanium oxide is using vertical
To modulation；
The multimode fibre, for the modulated optical signal to be transmitted to the demodulator circuit；
The demodulator circuit includes optical compensator, silicon detector and the two-stage amplifying circuit being sequentially connected, and the optical compensator, uses
In the modulated optical signal for receiving multimode fibre transmission, detect the intensity of the modulated optical signal, and based on it is described
The intensity of modulated optical signal, adjust the light signal strength of the lasing light emitter output.
4. the device of wideband electric field measurement according to claim 3, it is characterised in that the induction electrode and the shielding
Shell is sealed using waterproof material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091048.8A CN107703373A (en) | 2017-11-08 | 2017-11-08 | Broadband electric field measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711091048.8A CN107703373A (en) | 2017-11-08 | 2017-11-08 | Broadband electric field measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107703373A true CN107703373A (en) | 2018-02-16 |
Family
ID=61180054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711091048.8A Pending CN107703373A (en) | 2017-11-08 | 2017-11-08 | Broadband electric field measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107703373A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415290A (en) * | 2020-10-21 | 2021-02-26 | 西安理工大学 | GIS panoramic charge measurement system based on Fabry-Perot cavity optical measurement |
| CN113945766A (en) * | 2021-09-23 | 2022-01-18 | 西安交通大学 | Electromagnetic compatibility testing method for transformer embedded sensor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9107665D0 (en) * | 1990-04-27 | 1991-05-29 | Central Lightning Protection C | Thunder alarm device |
| JPH1054856A (en) * | 1996-08-09 | 1998-02-24 | Tokin Corp | Photoelectric field sensor |
| CN1705990A (en) * | 2002-10-17 | 2005-12-07 | 松下电器产业株式会社 | Optical disc drive |
| CN203551671U (en) * | 2013-11-20 | 2014-04-16 | 国家电网公司 | High-frequency electric field probe |
| CN103969489A (en) * | 2014-05-19 | 2014-08-06 | 重庆大学 | Non-contact type overvoltage sensor based on electro-optic effect |
| CN105021901A (en) * | 2015-08-07 | 2015-11-04 | 重庆大学 | High-voltage electric field measurement system and measurement method thereof |
| CN105425020A (en) * | 2015-11-20 | 2016-03-23 | 重庆大学 | Non-contact overvoltage photoelectric sensor based on double lithium niobate crystals |
| CN105445530A (en) * | 2015-11-27 | 2016-03-30 | 国网重庆市电力公司电力科学研究院 | Non-contact optical voltage sensor used for power grid overvoltage multi-point monitoring |
| CN207352075U (en) * | 2017-11-08 | 2018-05-11 | 南方电网科学研究院有限责任公司 | Broadband electric field measuring device |
-
2017
- 2017-11-08 CN CN201711091048.8A patent/CN107703373A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9107665D0 (en) * | 1990-04-27 | 1991-05-29 | Central Lightning Protection C | Thunder alarm device |
| JPH1054856A (en) * | 1996-08-09 | 1998-02-24 | Tokin Corp | Photoelectric field sensor |
| CN1705990A (en) * | 2002-10-17 | 2005-12-07 | 松下电器产业株式会社 | Optical disc drive |
| CN203551671U (en) * | 2013-11-20 | 2014-04-16 | 国家电网公司 | High-frequency electric field probe |
| CN103969489A (en) * | 2014-05-19 | 2014-08-06 | 重庆大学 | Non-contact type overvoltage sensor based on electro-optic effect |
| CN105021901A (en) * | 2015-08-07 | 2015-11-04 | 重庆大学 | High-voltage electric field measurement system and measurement method thereof |
| CN105425020A (en) * | 2015-11-20 | 2016-03-23 | 重庆大学 | Non-contact overvoltage photoelectric sensor based on double lithium niobate crystals |
| CN105445530A (en) * | 2015-11-27 | 2016-03-30 | 国网重庆市电力公司电力科学研究院 | Non-contact optical voltage sensor used for power grid overvoltage multi-point monitoring |
| CN207352075U (en) * | 2017-11-08 | 2018-05-11 | 南方电网科学研究院有限责任公司 | Broadband electric field measuring device |
Non-Patent Citations (4)
| Title |
|---|
| 于大海: "光学电压互感器电场仿真分析", 中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑, no. 2, pages 1 - 51 * |
| 李振华 等: "光学电压互感器的研究及应用现状分析", 高电压技术, vol. 42, no. 10, pages 3230 - 3236 * |
| 杨庆;董恒;陈少卿;司马文霞;袁涛;韩睿;: "基于一次电光效应的非接触式过电压监测传感器", 高电压技术, no. 01, pages 140 - 145 * |
| 董恒: "基于一次电光效应的非接触式过电压监测传感器研究", 中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑, no. 1, pages 1 - 52 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415290A (en) * | 2020-10-21 | 2021-02-26 | 西安理工大学 | GIS panoramic charge measurement system based on Fabry-Perot cavity optical measurement |
| CN112415290B (en) * | 2020-10-21 | 2022-09-30 | 西安理工大学 | GIS panoramic charge measurement system based on Fabry-Perot cavity optical measurement |
| CN113945766A (en) * | 2021-09-23 | 2022-01-18 | 西安交通大学 | Electromagnetic compatibility testing method for transformer embedded sensor |
| CN113945766B (en) * | 2021-09-23 | 2022-07-12 | 西安交通大学 | Electromagnetic compatibility testing method for transformer embedded sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207352075U (en) | Broadband electric field measuring device | |
| JP2021511480A (en) | Transformer monitoring / measurement system and method | |
| CA2814526C (en) | Optical sensor for non-contact voltage measurement | |
| CN103487728B (en) | Measure narrow-band electromagnetic wave signal coupling process and the detection system of GIS partial discharge | |
| CN202075376U (en) | GIS (gas-insulated switchgear) partial discharge monitoring device | |
| US20210123966A1 (en) | Partial discharge sensor | |
| CN103217571A (en) | Differential type D-dot voltage transformer and voltage detecting method thereof | |
| CN108732472A (en) | Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system | |
| CN107703373A (en) | Broadband electric field measuring device | |
| CN206193087U (en) | Non -contact overvoltage monitoring device based on electroluminescent effect | |
| CN104049134A (en) | Optical VFTO measurement system based on Pockels effect | |
| CN201096849Y (en) | A high level voltage measuring system for high-voltage DC transmission conversion valve | |
| CN110031667A (en) | Contactless duplex frequency voltage measuring device and its measurement method | |
| CN103675483A (en) | All-weather power frequency electric field measuring device | |
| CN101963634A (en) | Integrated optical isolation lightning electric field measurement apparatus | |
| CN108802484A (en) | A kind of gas isolated REAL-TIME SELF wideband high voltage meter | |
| CN106771908A (en) | Disc insulator rift defect climbs electro-detection sensor | |
| KR20100036567A (en) | Apparatus for detecting partial discharging signal and method for driving the same | |
| CN112462126A (en) | Track circuit outdoor equipment with non-contact voltage acquisition function | |
| CN105445530A (en) | Non-contact optical voltage sensor used for power grid overvoltage multi-point monitoring | |
| EP4033262B1 (en) | Partial discharge (pd) detection apparatus and method based on cross interconnection box | |
| CN108828493A (en) | The method that elimination temperature and other phase electric fields influence optical voltage transformer precision | |
| RU2702914C1 (en) | Device for measuring voltage in high-voltage circuit with remote transmission of information | |
| JP2774645B2 (en) | Partial discharge detector | |
| CN106680595B (en) | Double probe field measurement devices based on integrated light guide |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210803 Address after: 510663 3 building, 3, 4, 5 and J1 building, 11 building, No. 11, Ke Xiang Road, Luogang District Science City, Guangzhou, Guangdong. Applicant after: China South Power Grid International Co.,Ltd. Address before: 510663 3 building, 3, 4, 5 and J1 building, 11 building, No. 11, Ke Xiang Road, Luogang District Science City, Guangzhou, Guangdong. Applicant before: China South Power Grid International Co.,Ltd. Applicant before: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID |