CN110133390A - A kind of portable very fast transient high-frequency electric field measuring system - Google Patents
A kind of portable very fast transient high-frequency electric field measuring system Download PDFInfo
- Publication number
- CN110133390A CN110133390A CN201910538393.4A CN201910538393A CN110133390A CN 110133390 A CN110133390 A CN 110133390A CN 201910538393 A CN201910538393 A CN 201910538393A CN 110133390 A CN110133390 A CN 110133390A
- Authority
- CN
- China
- Prior art keywords
- signal
- electric field
- measuring system
- circuit
- frequency
- 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 80
- 230000001052 transient effect Effects 0.000 title claims abstract description 49
- 230000003287 optical effect Effects 0.000 claims abstract description 41
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 239000000835 fiber Substances 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 230000001360 synchronised effect Effects 0.000 claims description 30
- 238000009434 installation Methods 0.000 claims description 13
- 238000005070 sampling Methods 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 14
- 230000002452 interceptive effect Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract description 3
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 239000012071 phase Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 208000019300 CLIPPERS Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000001228 spectrum 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
- G01R29/12—Measuring electrostatic fields or voltage-potential
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a kind of portable very fast transient high-frequency electric field measuring systems.The measuring system includes: signal sensing device, the first transmission fiber, signal processing apparatus.In signal sensing device, electric field signal receiving antenna receives the very fast transient high-frequency electric field signal of GIS switch release, very fast transient high-frequency electric field signal is modulated to optical signal by electrooptic modulator after received antenna signal circuit is to signal progress signal condition is received.In signal processing apparatus, the first photoelectric conversion circuit converts optical signals to electric signal；Sample circuit samples electric signal, and signal processor is for handling and storing sampled data.By hardware optimization, so that measuring system can satisfy the measurement request of GIS substation high frequency transient electric field.Due to using optical signal transmission, also avoids interfering and decaying in transmission process, to provide measurement precision, provide support for assessment GIS substation electromagnetic compatibility level.
Description
Technical field
The present invention relates to field of measurement technique of electrical equipment, more particularly to a kind of portable very fast transient high-frequency electric field
Measuring system.
Background technique
As GIS (Gas Insulated Switchgear, Cubicle Gas-Insulated Switchgear) substation is at me
State's power grid using more and more extensive, smart grid level is higher and higher, and problem of substation electromagnetic compatibility is more and more prominent.By
It is located near switch yard primary equipment in secondary devices such as Intelligent substation merging unit, intelligent terminals, loses relay protection room
Shielding protection, thus these low power electronics devices based on Principles of Microcomputers substation occur switch operation, system short-circuit or
Person is by the space transient electromagnetic field TEM (Transient for being easy to be generated by electromagnetic interference, especially switch operation when being struck by lightning
Electromagnetic filed), have a significant impact to the safe and reliable operation tool of substation.Therefore, a kind of needle is developed
The measuring device for the fast high frequency transient electromagnetic field of express train that operation generates is switched to reliable, the safety for guaranteeing intelligent substation to GIS
Operation is of great significance to.
The electric field that GIS switching operation in substation generates is that occur a kind of express fast along with switch operation electro-magnetic transient
The features such as transient high frequency electric field has electric field pulse rising edge steep, and amplitude variation is quickly, frequency is high, the key technical indexes parameter
Are as follows: frequency is mainly distributed on 1MHz~300MHz range, and field strength (peak-to-peak value) range is 5KV/m~7kV/m, very fast transient
These features of high-frequency electric field make existing electric field measurement technology and equipment not be able to satisfy its measurement request.
Summary of the invention
It is an object of the present invention to provide a kind of GIS substation very fast transient high-frequency electric field measurement request of meeting
Portable very fast transient high-frequency electric field measuring system.
The radiated electric field generated when a further object of the present invention is to improve to GIS switch motion measures accurate
Property.
Another further object of the present invention is to measuring system structure to be made is more compact, portability is improved.
Another further object of the present invention is to memory capacity needed for measuring system to be saved.
Particularly, the present invention provides a kind of portable very fast transient high-frequency electric field measuring systems.The measuring system packet
It includes: signal sensing device, the first transmission fiber, signal processing apparatus.
Signal sensing device includes: shielding shell, interior forming member installation cavity；Electric field signal receiving antenna, is installed on
Outer side of shell is shielded, for receiving the very fast transient high-frequency electric field signal of GIS switch release；Received antenna signal circuit, peace
Loaded in component installation cavity, input terminal is connect with the tail end of electric field signal receiving antenna, for electric field signal receiving antenna
Reception signal carry out signal condition；Electrooptic modulator is installed in component installation cavity, the output with received antenna signal circuit
End connection, for the output signal of received antenna signal circuit to be modulated to optical signal.
First transmission fiber is connect with the light output mouth of electrooptic modulator, is used for output optical signal.
Signal processing apparatus includes: the first photoelectric conversion circuit, is connect with the first transmission fiber, for converting optical signal
For electric signal；Sample circuit is connect with the first photoelectric conversion circuit, for sampling to electric signal；Signal processor, and is adopted
Sample circuit connection, for handling and storing sampled data.
Optionally, signal sensing device further include: synchronous triggering device is installed in component installation cavity, input terminal
Connect with the tail end of electric field signal receiving antenna, for electric field signal receiving antenna reception signal within the preset frequency range
In the case where, export trigger signal；And signal processor is also connect with synchronous triggering device, and is started according to trigger signal.
Optionally, optical signal output circuit is provided in synchronous triggering device, optical signal output circuit is predetermined frequency model
The antenna enclosed receives signal triggering, the trigger signal of output light form；Measuring system further includes the second transmission fiber, with optical signal
Output circuit, for exporting trigger signal；And signal processing apparatus further include: the second photoelectric conversion circuit, with the second transmission
Optical fiber connection is provided for trigger signal to be converted to electric trigger signal to signal processor.
Optionally, the shielding shell is aluminum box, and by ground connection, and the received antenna signal is electric
Road, the electrooptic modulator, the synchronous triggering device are fixed by insulating layer and the shielding shell.
Optionally, electric field signal receiving antenna be unipole antenna, frequency reception signal range be configured to 10kHz~
500MHz。
Optionally, received antenna signal circuit includes the quick FET amplifier of high input resistance, and the non-inverting input terminal of amplifier connects
A PIN limiter is connect, the inverting input terminal of amplifier is connected as voltage follower, and the output end of amplifier connects electrooptic modulator.
Optionally, electrooptic modulator includes: laser, and for emitting laser beams, the optical parameter of laser beam is with aerial signal
The output signal for receiving circuit changes；The polarizer is transformed to linearly polarized light after laser beam is incident for making；Lithium columbate crystal is used
In linearly polarized light is decomposed into two vertical components；Postpone slide, for making two vertical components generate setting by delay
Phase difference；And analyzer, output generate the optical signal of phase difference.
Optionally, the first transmission fiber is multimode fibre, and the junction of electrooptic modulator is provided with waterproof sealing
Structure.
Optionally, signal processing apparatus further include: display screen is connect with signal processor, is used for according to sampled signal also
The high frequency transient electric field waveform that original goes out；External memorizer interface, connect with signal processor, for connecting external memory, with
It is exported for data.
Optionally, the first photoelectric conversion circuit, the second photoelectric conversion circuit, signal processor, synchronous triggering device, display
Screen, external memorizer Interface integration are on one piece of pcb board.
Portable very fast transient high-frequency electric field measuring system of the invention, signal sensing device pass through the first transmission fiber
Measured signal is provided to signal processing apparatus.Wherein in signal sensing device, electric field signal receiving antenna receives GIS switch and releases
The very fast transient high-frequency electric field signal put, very fast transient high-frequency electric field signal is through received antenna signal circuit to reception signal
After carrying out signal condition, optical signal is modulated to by electrooptic modulator.In signal processing apparatus, the first photoelectric conversion circuit is by light
Signal is converted to electric signal；Sample circuit samples electric signal, and signal processor is for handling and storing sampled data.It is logical
Hardware optimization is crossed, so that measuring system can satisfy the measurement request of GIS substation high frequency transient electric field.Due to using optical signal
Transmission also avoids interfering and decaying in transmission process, so that measurement precision is provided, for assessment GIS substation electricity
Magnetic compatibility levels provide support.
Further, portable very fast transient high-frequency electric field measuring system of the invention can by synchronous triggering device
With the reception signal of electric field signal receiving antenna within the preset frequency range (when the frequency range is acted according to GIS electric field frequency
Rate setting, can be higher-frequency) in the case where, trigger signal is exported, the response time is synchronous using multiple spot optical signal up to nanosecond
Triggering mode, which improves anti-electromagnetic interference capability, reduces power consumption so that signal processor starts according to synchronous triggering signal,
And memory space is saved, to save memory capacity needed for measuring system.
Further, in portable very fast transient high-frequency electric field measuring system of the invention, signal sensing device tool
There is shielding shell, received antenna signal circuit, electrooptic modulator, synchronous triggering device are installed in shielding shell, are avoided outer
Boundary's interference, improves measurement accuracy and reliability.
Further, in portable very fast transient high-frequency electric field measuring system of the invention, signal processing apparatus is adopted
With sample circuit (including A/D conversion function) connection signal processor, and by the first photoelectric conversion circuit, the second photoelectric conversion electricity
Road, signal processor, synchronous triggering device, display screen, external memorizer Interface integration reduce system on one piece of pcb board
Volume improves transportability.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic diagram of portable very fast transient high-frequency electric field measuring system according to an embodiment of the invention；
Fig. 2 is aerial signal in portable very fast transient high-frequency electric field measuring system according to an embodiment of the invention
Receive the schematic diagram of circuit；
Fig. 3 is Electro-optical Modulation in portable very fast transient high-frequency electric field measuring system according to an embodiment of the invention
The schematic diagram of device；
Fig. 4 is the first photoelectricity in portable very fast transient high-frequency electric field measuring system according to an embodiment of the invention
The schematic diagram of conversion circuit；And
Fig. 5 is synchronous triggering in portable very fast transient high-frequency electric field measuring system according to an embodiment of the invention
The schematic diagram of device.
Specific embodiment
Fig. 1 is the signal of portable very fast transient high-frequency electric field measuring system 10 according to an embodiment of the invention
Figure.The portable very fast transient high-frequency electric field measuring system 10 is generally can include: signal sensing device 100, first passes
Lose fine 210, signal processing apparatus 300.
Signal sensing device 100 may include: shielding shell 150, electric field signal receiving antenna 110, received antenna signal
Circuit 120, electrooptic modulator 130.Signal sensing device 100, in measurement, makes electric field for being arranged in electric field measurement region
Signal receiving antenna 110 is perpendicular to ground.
Shield forming member installation cavity in shell 150.Shielding shell 150 can be with aluminum box, and passes through ground connection, and one
Kind preferred embodiment is shielding shell 150 using with a thickness of 3mm metal aluminium material, and size can be 100 × 100 × 75mm, satisfaction
Electromagnetic shielding requirements and safety requirements.
Electric field signal receiving antenna 110 is installed on 150 outside of shielding shell, for receiving the express train speed of GIS switch release
Transient high frequency electric field signal.Electric field signal receiving antenna 110 can be unipole antenna, and frequency reception signal range is configured to
10kHz~500MHz.Monopolar configuration can be used in antenna 110, can determine that unipole antenna according to the amplitude-frequency characteristic of electric field to be measured
Diameter length.A kind of one implementation of portable GIS substation high frequency transient electric field detection measuring system 10 provided by the invention
Monopole length is chosen in example and takes 12mm, and measurement electric field frequency range can reach 10kHz~500MHz.Electric field signal receives day
The tail end of line 110 penetrates component installation cavity, to be connected with received antenna signal circuit 120.
Received antenna signal circuit 120 is installed in component installation cavity, input terminal and electric field signal receiving antenna 110
Tail end connection carries out signal condition for the reception signal to electric field signal receiving antenna 110.Fig. 2 is one according to the present invention
The schematic diagram of received antenna signal circuit 120 in the portable very fast transient high-frequency electric field measuring system 10 of embodiment.Antenna
Signal receiving circuit 120 includes the quick FET amplifier OP1 (field effect transistor operational amplifier) of high input resistance, amplifier OP1
Non-inverting input terminal connect a PIN limiter (diode clipper), the inverting input terminal of amplifier OP1 is connected as voltage follow
The output end of device, amplifier OP1 connects electrooptic modulator 130.It can select model ADA4817's in an alternative embodiment
FET amplifier.
Electrooptic modulator 130 is also installed in component installation cavity.Electrooptic modulator 130 and received antenna signal circuit 120
Output end, for the output signal of received antenna signal circuit 120 to be modulated to optical signal.Fig. 3 is one according to the present invention
The schematic diagram of electrooptic modulator 130 in the portable very fast transient high-frequency electric field measuring system 10 of embodiment.Electrooptic modulator
130 include: laser 131, the polarizer 132, lithium columbate crystal 133, delay slide 134 and analyzer 135.Laser 131 is used
Change in the optical parameter of transmitting laser beam, laser beam with the output signal of received antenna signal circuit 120.Such as modulated signal can
Change the optical parameter of the laser beam by modulator with signal on the modulator that acts on outside laser 131.The polarizer
132 are transformed to linearly polarized light after laser beam is incident for making.Lithium columbate crystal 133 is used to for linearly polarized light being decomposed into two vertically
Component；The phase difference that delay slide 134 is used to make two vertical components generate setting by delay；And analyzer 135 exports
Generate the optical signal of phase difference.For example, transmission situation of the signal in electrooptic modulator 130 are as follows: pass through the laser beam of modulator
Optical parameter change with signal, the incident light that laser 131 generates becomes linearly polarized light by the polarizer 132, into niobic acid
Two vertical components are decomposed into after crystalline lithium 133, postponing slide 134 using one 1/4 is that the pi/2 that two components generate is solid
Phase bit is poor, most exports modulation light through analyzer 135 afterwards.Furthermore electrooptic modulator 130 can also use collimator to believe as light
Number output interface.
First transmission fiber 210 is connect with the light output mouth of electrooptic modulator 130, is used for output optical signal.First biography
Losing fibre 210 can be multimode fibre, and the junction of electrooptic modulator 130 is provided with waterproof sealing structure namely multimode
Fiber optic enclosure and interface have good waterproof seal.
Signal processing apparatus 300 includes: the first photoelectric conversion circuit 310, sample circuit 330, signal processor 340.
First photoelectric conversion circuit 310 is connect with the first transmission fiber 210, for converting optical signals to electric signal；Fig. 4
It is the first photoelectric conversion circuit in portable very fast transient high-frequency electric field measuring system 10 according to an embodiment of the invention
310 schematic diagram.It is defeated that the first transmission fiber 210 of PIN photodiode L1 reception can be used in first photoelectric conversion circuit 310
The modulated optical signal entered.Optionally, the electric signal after conversion is put using two cascade OPA658 amplifier OP2, OP3
Greatly, and by selecting suitable resistance value to adjust amplification factor.
Sample circuit 330 is connect with the first photoelectric conversion circuit 310, for sampling to electric signal, to realize A/
D (Analog-digital Converter) sampling functions, such as can select double 8 high-speed a/d converters, such as MXT2001, performance that should connect
Closely or reach the following conditions: 8 sampling precisions, sampling rate for each channel reach 1.3GS/s, it is preferred to use high-speed A/D conversion circuit
And digital self-calibration technique, guarantee the high speed and high dynamic characteristic of device.A/D device inside can integrated serial interface, support
User's control changes circuit parameter, to improve performance and meet system requirements.
Signal processor 340 is connect with sample circuit 330, for handling and storing sampled data.Signal processor 340
DSP (Digital Signal Processor, digital signal processor) can be selected, such as model can be selected
The DSP of TMS320DM8167SCYG4, for maximum clock frequency up to 1.2GHz, data RAM size is 64kB, wide data bus
Degree is 32bit.
The measuring system 10 of the present embodiment can satisfy the measurement of GIS substation high frequency transient electric field by hardware optimization
It is required that.Due to using optical signal transmission, also avoid interfering and decaying in transmission process, so that it is accurate to provide measurement
Property, support is provided for assessment GIS substation electromagnetic compatibility level.
The specific device type that the measuring system 10 of the present embodiment refers to is to enumerate, and those skilled in the art can root
According to needing, selection function is identical, performance is approximate or higher similar device.
In addition, synchronous triggering device 140 can also be arranged in the measuring system 10 of the present embodiment.The synchronous triggering device 140
Also it is installed in component installation cavity, input terminal is also connect with the tail end of electric field signal receiving antenna 110, in electric field signal
The reception signal of receiving antenna 110 within the preset frequency range in the case where, export trigger signal；And signal processor 340
It also connect with synchronous triggering device 140, and is started according to trigger signal.
Optionally, optical signal output circuit is provided in synchronous triggering device 140, optical signal output circuit is predetermined frequency
The antenna of range receives signal triggering, the trigger signal of output light form；Measuring system 10 further includes the second transmission fiber 220,
With optical signal output circuit, for exporting trigger signal；And signal processing apparatus 300 further include: the second photoelectric conversion circuit
320, it connect with the second transmission fiber 220, for trigger signal to be converted to electric trigger signal, is provided to signal processor 340.
Fig. 5 is synchronous touching in portable very fast transient high-frequency electric field measuring system 10 according to an embodiment of the invention
The schematic diagram of transmitting apparatus 140.Synchronous triggering device 140 uses Multipoint synchronous triggering mode, when synchronous triggering device 140 receives
When the electromagnetic wave of higher frequency band, the triode Q1 in electro-optical conversion circuit can be connected in energy, and then drives multiple light-emitting diodes
Pipe L2 generates optical signal, and optical signal is coupled to the second transmission fiber 220 and is transmitted separately to the second photoelectric conversion circuit 320, by light
Signal is converted into electric signal, and then trigger processor 340 (DSP main control chip) is started to work.
Second transmission fiber 220 and the second photoelectric conversion circuit 320 can respectively with the first transmission fiber 210 and
One photoelectric conversion circuit 310 uses multimode fibre using identical scheme namely the second transmission fiber 220, and with shielding shell
150 junction is provided with waterproof sealing structure；Second photoelectric conversion circuit 320 uses two cascade OPA658 amplifiers pair
Electric signal after conversion amplifies, and by selecting suitable resistance value to adjust amplification factor.
The portable very fast transient high-frequency electric field measuring system 10 of the present embodiment, using synchronous triggering device 140 in electricity
(electric field frequency is set the reception signal of field signal receiving antenna 110 when the frequency range is acted according to GIS within the preset frequency range
It is fixed, can be higher-frequency) in the case where, trigger signal is exported, the response time up to nanosecond, triggers using multiple spot optical signal is synchronous
Mode improves anti-electromagnetic interference capability, so that signal processor 340 starts according to synchronous triggering signal, reduces power consumption,
And memory space is saved, thus memory capacity needed for saving measuring system 10.
Signal processing apparatus 300 can also include: display screen 350, external memorizer interface 360.Display screen 350 and signal
Processor 340 connects, the high frequency transient electric field waveform for being restored according to sampled signal；External memorizer interface 360, with letter
Number processor 340 connects, for connecting external memory, for data output.LCD (liquid crystal display can be used in display screen 350
Screen), signal processor 340 can also export the processing result (such as amplitude, frequency spectrum etc.) of signal by display screen 350.Outside
Connecing memory interface 360 can be used SD card socket, so as to copy out data.
First photoelectric conversion circuit 310, the second photoelectric conversion circuit 320, signal processor 340, synchronous triggering device
140, display screen 350, external memorizer interface 360 are integrated on one piece of pcb board, to greatly reduce system bulk, are mentioned
High transportability.
The portable very fast transient high-frequency electric field measuring system 10 of the present embodiment can also be including power module (in figure not
It shows).220V industrial-frequency alternating current can be carried out lowering and stabilizing blood pressure and each component is given to power again by power module, such as can be by 220V work
Frequency alternating current is depressured, inversion, pressure stabilizing, is exported after filtering and is stablized 3.3V, 5V direct current.
The portable very fast transient high-frequency electric field measuring system 10 of the present embodiment can also include set/reset circuit,
Input module (being not shown in figure) etc..Set/reset circuit is for resetting measuring system 10, to occur in failure
When recovery system 10 normal measurement.Input module can be used for user and input operation instruction, such as carry out data copy, parameter
The operation of setting.
Using the present embodiment portable very fast transient high-frequency electric field measuring system 10 when, should be by signal sensing device
100 are placed horizontally in detected space, and electric field signal receiving antenna 110 is perpendicular to ground, when GIS substation carries out switch operation
After the high frequency transient electric field of generation is received by electric field signal receiving antenna 110, received antenna signal circuit 120 passes signal respectively
Synchronous triggering device 140 and electrooptic modulator 130 are transported to, when synchronous triggering device 140 receives the electromagnetic wave of higher frequency band,
The triode in optical signal output circuit can be connected in energy, and then multiple light emitting diodes is driven to generate optical signal, optical signal coupling
It is bonded to multimode fibre and is transmitted separately to the multiple photoelectric conversion circuits in rear end, convert optical signals into electric signal, and then trigger signal
Processor 340 is started to work, and the analog electrical signal that photoelectric conversion circuit exports is converted into digital signal and provided by sample circuit 330
It is handled to signal processor 340, high frequency transient electric field waveform is finally generated on display screen 350, and by collected number
According to storing into SD card.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (10)
1. a kind of portable very fast transient high-frequency electric field measuring system, comprising:
Signal sensing device comprising:
Shield shell, interior forming member installation cavity；
Electric field signal receiving antenna is installed on the shielding outer side of shell, and the very fast transient for receiving GIS switch release is high
Frequency electric field signal；
Received antenna signal circuit is installed in the component installation cavity, input terminal and the electric field signal receiving antenna
Tail end connection carries out signal condition for the reception signal to the electric field signal receiving antenna；
Electrooptic modulator is installed in the component installation cavity, is connect, is used for the output end of the received antenna signal circuit
The output signal of the received antenna signal circuit is modulated to optical signal；
First transmission fiber is connect, for exporting the optical signal with the light output mouth of the electrooptic modulator；
Signal processing apparatus comprising:
First photoelectric conversion circuit is connect with first transmission fiber, for the optical signal to be converted to electric signal；
Sample circuit is connect with first photoelectric conversion circuit, for sampling to the electric signal；
Signal processor is connect with the sample circuit, for handling and storing sampled data.
2. measuring system according to claim 1, wherein the signal sensing device further include:
Synchronous triggering device is installed in the component installation cavity, the input terminal also tail with the electric field signal receiving antenna
End connection, for the reception signal of the electric field signal receiving antenna within the preset frequency range in the case where, output triggering
Signal；And
The signal processor is also connect with the synchronous triggering device, and is started according to the trigger signal.
3. measuring system according to claim 2, wherein
Optical signal output circuit is provided in the synchronous triggering device, the optical signal output circuit is by the predeterminated frequency model
The antenna enclosed receives signal triggering, the trigger signal of output light form；
The measuring system further include: the second transmission fiber is believed with the optical signal output circuit for exporting the triggering
Number；And
The signal processing apparatus further include: the second photoelectric conversion circuit is connect with second transmission fiber, and being used for will be described
Trigger signal is converted to electric trigger signal, and Xiang Suoshu signal processor provides.
4. measuring system according to claim 2, wherein
The shielding shell is aluminum box, and passes through ground connection, and the received antenna signal circuit, the electric light tune
Device processed, the synchronous triggering device are fixed by insulating layer and the shielding shell.
5. measuring system according to claim 2, wherein
The electric field signal receiving antenna is unipole antenna, and frequency reception signal range is configured to 10kHz~500MHz.
6. measuring system according to claim 2, wherein
The received antenna signal circuit includes the quick FET amplifier of high input resistance, the non-inverting input terminal connection of the amplifier
One PIN limiter, the inverting input terminal of the amplifier are connected as voltage follower, and the output end of the amplifier connects the electric light
Modulator.
7. measuring system according to claim 2, wherein the electrooptic modulator includes:
Laser, for emitting laser beams, the optical parameter of the laser beam with the received antenna signal circuit output signal
Change；
The polarizer is transformed to linearly polarized light after the laser beam is incident for making；
Lithium columbate crystal, for the linearly polarized light to be decomposed into two vertical components；
Postpone slide, for making described two vertical components generate the phase difference set by delay；And
Analyzer, output generate the optical signal of the phase difference.
8. measuring system according to claim 2, wherein
First transmission fiber is multimode fibre, and the junction of the electrooptic modulator is provided with waterproof sealing knot
Structure.
9. measuring system according to claim 3, wherein the signal processing apparatus further include:
Display screen is connect with the signal processor, the high frequency transient electric field waveform for being restored according to the sampled signal；
External memorizer interface is connect with the signal processor, for connecting external memory, for data output.
10. measuring system according to claim 9, wherein
First photoelectric conversion circuit, second photoelectric conversion circuit, the signal processor, the synchronous triggering dress
It sets, the display screen, the external memorizer Interface integration are on one piece of pcb board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910538393.4A CN110133390A (en) | 2019-06-20 | 2019-06-20 | A kind of portable very fast transient high-frequency electric field measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910538393.4A CN110133390A (en) | 2019-06-20 | 2019-06-20 | A kind of portable very fast transient high-frequency electric field measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110133390A true CN110133390A (en) | 2019-08-16 |
Family
ID=67578843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910538393.4A Pending CN110133390A (en) | 2019-06-20 | 2019-06-20 | A kind of portable very fast transient high-frequency electric field measuring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110133390A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002031658A (en) * | 2000-07-14 | 2002-01-31 | Nippon Telegr & Teleph Corp <Ntt> | System and method for detecting high frequency electromagnetic wave |
| CN1844941A (en) * | 2006-05-23 | 2006-10-11 | 清华大学 | A photoelectric integrated strong electric field measurement system |
| CN101706527A (en) * | 2009-10-30 | 2010-05-12 | 西安交通大学 | Method for detecting arc faults based on time-frequency characteristics of high-frequency current component |
| US20140015541A1 (en) * | 2011-03-29 | 2014-01-16 | Sumitomo Osaka Cement Co., Ltd. | Electric field measuring device |
| CN204166055U (en) * | 2014-09-30 | 2015-02-18 | 国家电网公司 | For the electric-field sensor of EMP measurement |
| CN205725773U (en) * | 2016-03-02 | 2016-11-23 | 北京盈想东方科技股份有限公司 | A kind of single channel spectrum monitoring equipment |
| CN206497159U (en) * | 2016-08-31 | 2017-09-15 | 电子信息系统复杂电磁环境效应国家重点实验室 | A kind of sleeve monopole (antenna) electric-field sensor modulated based on active electro-optical |
| CN108957199A (en) * | 2018-08-30 | 2018-12-07 | 国家电网有限公司 | A kind of synchronous triggering device and triggering method for the acquisition of electro-magnetic transient data |
| CN109116125A (en) * | 2018-08-23 | 2019-01-01 | 国网江苏省电力有限公司盐城供电分公司 | The instantaneous electric field measuring system and its measurement method that a kind of combined enclosed transformer substation switch generates when acting |
| CN210665892U (en) * | 2019-06-20 | 2020-06-02 | 贵州电网有限责任公司电力科学研究院 | Portable ultra-fast transient high-frequency electric field measurement system |
-
2019
- 2019-06-20 CN CN201910538393.4A patent/CN110133390A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002031658A (en) * | 2000-07-14 | 2002-01-31 | Nippon Telegr & Teleph Corp <Ntt> | System and method for detecting high frequency electromagnetic wave |
| CN1844941A (en) * | 2006-05-23 | 2006-10-11 | 清华大学 | A photoelectric integrated strong electric field measurement system |
| CN101706527A (en) * | 2009-10-30 | 2010-05-12 | 西安交通大学 | Method for detecting arc faults based on time-frequency characteristics of high-frequency current component |
| US20140015541A1 (en) * | 2011-03-29 | 2014-01-16 | Sumitomo Osaka Cement Co., Ltd. | Electric field measuring device |
| CN204166055U (en) * | 2014-09-30 | 2015-02-18 | 国家电网公司 | For the electric-field sensor of EMP measurement |
| CN205725773U (en) * | 2016-03-02 | 2016-11-23 | 北京盈想东方科技股份有限公司 | A kind of single channel spectrum monitoring equipment |
| CN206497159U (en) * | 2016-08-31 | 2017-09-15 | 电子信息系统复杂电磁环境效应国家重点实验室 | A kind of sleeve monopole (antenna) electric-field sensor modulated based on active electro-optical |
| CN109116125A (en) * | 2018-08-23 | 2019-01-01 | 国网江苏省电力有限公司盐城供电分公司 | The instantaneous electric field measuring system and its measurement method that a kind of combined enclosed transformer substation switch generates when acting |
| CN108957199A (en) * | 2018-08-30 | 2018-12-07 | 国家电网有限公司 | A kind of synchronous triggering device and triggering method for the acquisition of electro-magnetic transient data |
| CN210665892U (en) * | 2019-06-20 | 2020-06-02 | 贵州电网有限责任公司电力科学研究院 | Portable ultra-fast transient high-frequency electric field measurement system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104614602A (en) | Online monitoring device for arrester | |
| CN104459348A (en) | Software-defined radio based high-power microwave radiation field measuring device and method | |
| CN108957199A (en) | A kind of synchronous triggering device and triggering method for the acquisition of electro-magnetic transient data | |
| CN202075376U (en) | GIS (gas-insulated switchgear) partial discharge monitoring device | |
| CN105425051A (en) | Broadband pulse electric field test probe | |
| CN104122428A (en) | Electronic current transformer adopting optical fiber transmission analog signals | |
| CN105334432A (en) | GIS partial discharge supersonic wave detection system | |
| CN204166030U (en) | A kind of electronic current mutual inductor adopting Optical Fiber Transmission simulating signal | |
| CN205210249U (en) | Partial discharge detector system based on ultrasonic sensor | |
| CN210665892U (en) | Portable ultra-fast transient high-frequency electric field measurement system | |
| CN201134163Y (en) | A corona current measuring device | |
| CN210665997U (en) | Portable ultra-fast transient high-frequency magnetic field measurement system | |
| CN110174628B (en) | Portable ultra-fast transient high-frequency magnetic field measurement system | |
| CN202815078U (en) | Current measuring device | |
| CN101354825A (en) | Method and apparatus for measuring wireless ultra-high pressure current | |
| CN110133390A (en) | A kind of portable very fast transient high-frequency electric field measuring system | |
| CN2816825Y (en) | Microwave peak-field-density detector | |
| CN203232076U (en) | Digitized transformer station electric energy meter | |
| CN102621376A (en) | Method for precisely and synchronously measuring multiple high and low-potential electric parameters and device | |
| CN203337769U (en) | An On-line Monitoring System for Partial Discharge in Gas Insulated Combined Electrical Appliances | |
| CN203084093U (en) | Monitor used for lightning arrester | |
| CN114325128A (en) | Integrated high-power microwave field intensity detector | |
| CN107390061A (en) | Using the test system of fiber optic communication electronic device false triggering under strong electromagnetic radiation | |
| CN209327449U (en) | A Switch Action Instantaneous Electric Field Measurement System for Combined Closed Substation | |
| CN103809012A (en) | Synchronous output apparatus for voltage wave signal based on optical electric field transducer |
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 |