CN107247162A - The electric power system of active electronic transformer mesohigh lateral circuit - Google Patents
The electric power system of active electronic transformer mesohigh lateral circuit Download PDFInfo
- Publication number
- CN107247162A CN107247162A CN201710595160.9A CN201710595160A CN107247162A CN 107247162 A CN107247162 A CN 107247162A CN 201710595160 A CN201710595160 A CN 201710595160A CN 107247162 A CN107247162 A CN 107247162A
- Authority
- CN
- China
- Prior art keywords
- microwave
- power
- signal
- transmission unit
- microwave signal
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 41
- 230000005611 electricity Effects 0.000 claims description 8
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 9
- 239000013307 optical fiber Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 208000032370 Secondary transmission Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Plasma Technology (AREA)
Abstract
A kind of electric power system for active electronic transformer mesohigh lateral circuit that the embodiment of the present application is provided, the system includes microwave generating apparatus, microwave transmission unit and the microwave rectification device being sequentially connected, wherein, microwave generating apparatus and is sent out using the direct current signal generation High-Power Microwave signal of low-pressure side and reaches microwave transmission unit；High-Power Microwave signal is sent to microwave rectification device by microwave transmission unit；Microwave rectification device receives microwave signal, and is supply current by its rectification, and supply current is used to power for high pressure lateral circuit.The electric power system that the application is provided is powered using microwave generating apparatus, it is to avoid from high voltage bus power taking can caused by electrical stability it is poor the problem of.While satisfaction power supply is moderately good, the microwave amplifier in microwave generating apparatus can be amplified to microwave signal, and then also achieve the output of high-power power supply.
Description
Technical field
The application is related to transformer for supplying power technical field, more particularly to a kind of active electronic transformer mesohigh lateral circuit
Electric power system.
Background technology
Active electronic transformer is a kind of device for being used to detect the size of current of ultra-high-tension power transmission line.Fig. 1 is active
The structural representation of electronic mutual inductor, as shown in figure 1, active electronic transformer include Rogowski coil 1, high pressure lateral circuit 2,
Optical fiber transmission 3 and lower-voltage circuit 4.Its course of work includes, and Rogowski coil 1 obtains detection signal at high voltage bus M；High pressure
Lateral circuit 2 will detect that signal carries out analog-to-digital conversion；Detection signal after conversion is reached lower-voltage circuit 4 by optical fiber transmission 3；Low pressure
Lateral circuit 4 is received, handles the signal, and result is transported into corresponding measurement and relay protection device.
Wherein, in order to ensure high pressure lateral circuit 2 normal work, it is necessary to provide it stabilization, reliable working power.Mesh
Before, mainly include for the electric supply installation of high pressure lateral circuit：High-pressure side ask for electric supply installation, high-pressure side storage battery power supply device,
Low-pressure side laser powered sensor device and low-pressure side ultrasonic wave electric supply installation etc..
But, these electric supply installations all be present.Taken for example, electric supply installation is asked in high-pressure side from high voltage bus
Electric energy is obtained, after the processing of the subsequent conditioning circuits such as rectification circuit, high pressure lateral circuit is provided power to.The electric supply installation can provide compared with
Big output power, but the electric energy being to provide will change with the change of high voltage bus, therefore its electrical stability is poor.Low pressure
Light energy is sent to high electricity by side laser powered sensor device from low potential side using laser diode or other light sources device by optical fiber
Position side, then after the processing of the subsequent conditioning circuits such as photoelectric switching circuit, light energy is converted to the electric energy needed for high pressure lateral circuit.By
It may insure that light supplies the stability of rate in the operation principle of laser, therefore, the electric energy that the electric supply installation is provided is also relatively steady
It is fixed.But, the relatively low influence of the conversion efficiency of the limitation of optical output power, particularly photoelectric switching circuit is excited, the confession is caused
The output power that electric installation is provided is limited.
The content of the invention
This application provides a kind of electric power system of active electronic transformer mesohigh lateral circuit, to solve existing to have
The problem of electric supply installation of source electric mutual inductor mesohigh lateral circuit can not have good stability and big output power concurrently simultaneously.
A kind of electric power system of active electronic transformer mesohigh lateral circuit, the system includes the microwave being sequentially connected
Generating means, microwave transmission unit and microwave rectification device,
The microwave generating apparatus is used to generate High-Power Microwave signal, and sends it to microwave transmission unit；
The microwave transmission unit is used to the High-Power Microwave signal being sent to the microwave rectification device；
The microwave rectification device is used to receive the microwave signal, and is supply current by its rectification, the power supply electricity
Flow for being powered for high pressure lateral circuit.
Preferably, the microwave generating apparatus includes adjustable stabilized voltage supply, microwave signal converter, the microwave being sequentially connected
Amplifier and microwave emitter,
The adjustable stabilized voltage supply is used to export a stable direct current signal；
The microwave signal converter is used to the direct current signal being converted into initial microwave signal；
The microwave amplifier is used to carry out power amplification to the initial microwave signal, obtains High-Power Microwave signal；
The microwave emitter is used to send the High-Power Microwave signal to the microwave transmission unit.
Preferably, the microwave rectification device includes the microwave receiver and rectifier being sequentially connected, the rectifier
Output end is used to connect the high pressure lateral circuit in active electric mutual inductor；
The microwave receiver receives the High-Power Microwave signal of the microwave transmission unit transmission, and sends it to institute
State rectifier；
The rectifier is by the High-Power Microwave signal rectification into supply current.
Preferably, the connection circuit of the microwave receiver and rectifier is provided with the first wave filter, first filtering
Device is used to filter out the harmonic wave in the High-Power Microwave signal.
Preferably, the rectifier and the connection circuit of the high pressure lateral circuit are provided with the second wave filter, described second
Wave filter is used to filter out the harmonic wave in the supply current.
Preferably, the microwave transmission unit includes waveguide.
A kind of active electronic transformer mesohigh lateral circuit provided from above technical scheme, the embodiment of the present application
Electric power system, the system includes the microwave generating apparatus, microwave transmission unit and the microwave rectification device that are sequentially connected, wherein,
Microwave generating apparatus and is sent out using the direct current signal generation High-Power Microwave signal of low-pressure side and reaches microwave transmission unit；
High-Power Microwave signal is sent to microwave rectification device by microwave transmission unit；Microwave rectification device receives microwave signal, and will
Its rectification is supply current, and supply current is used to power for high pressure lateral circuit.The electric power system that the application is provided is sent out using microwave
Generating apparatus is powered, it is to avoid from high voltage bus power taking can caused by electrical stability it is poor the problem of.Stablize good meeting power supply
While good, the microwave amplifier in microwave generating apparatus can be amplified to microwave signal, and then also achieve high-power confession
The output of electricity.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of active electronic transformer；
Fig. 2 is the usage scenario figure of the electric power system of active electronic transformer mesohigh lateral circuit；
Fig. 3 is a kind of structural representation of the electric power system of active electronic transformer mesohigh lateral circuit；
Symbol in Fig. 1-3 is expressed as：1- Rogowski coils, 2- high pressure lateral circuits, the transmission of 3- optical fiber, 4 low-pressure sides electricity
Road, 5- microwave generating apparatus, 51- adjustable stabilized voltage supplies, 52- microwave signal converters, 53- microwave amplifiers, 54- Microwave emissions
Device, 6- microwave transmission units, 7- microwave rectification devices, 71- microwave receivers, 72- rectifiers, the wave filters of 73- first, 74-
Two wave filters.
Embodiment
Fig. 2 is the usage scenario figure of the electric power system of active electronic transformer mesohigh lateral circuit, as shown in Fig. 2 position
Microwave signal is generated in the microwave generating apparatus 5 of low-pressure side, and is reached by microwave transmission unit 6 whole positioned on high-tension side microwave
Device 7 is flowed, microwave signal is converted to supply high pressure lateral circuit after electric signal by microwave rectification device 7.
Fig. 3 is a kind of structural representation of the electric power system of active electronic transformer mesohigh lateral circuit, such as Fig. 3 institutes
Show, the electric power system of active electronic transformer mesohigh lateral circuit includes microwave generating apparatus 5, the microwave transmission being sequentially connected
Device 6 and microwave rectification device 7.
Microwave generating apparatus 5 generates High-Power Microwave signal, and sends it to microwave transmission unit 6.In the application, microwave
Generating means 5 includes adjustable stabilized voltage supply 51, the output end connection 220V alternating currents of adjustable stabilized voltage supply 51, adjustable stabilized voltage supply
51 output end is sequentially connected microwave signal converter 52, microwave amplifier 53 and microwave emitter 54.Adjustable stabilized voltage supply 51
From power taking energy on external 220V alternating currents, converted and exported after a stable direct current signal to microwave signal converter
52.Compared to the power taking energy from high voltage bus, the electric power system of the application is using direct current as electric energy, and direct current has good
Good stability, also has good stability, therefore, the confession of the electric power system of the application by its supply current being converted into
Electricity is stablized preferable.At present, the model of adjustable stabilized voltage supply has a variety of on the market, in the present embodiment, the adjustable stabilized voltage supply of selection
Model LM317A, LM317A there is larger output voltage 35-40V, be that the output power of the electric power system of the application is big
There is provided power supply basis.
Direct current signal is converted into initial microwave signal, the present embodiment by microwave signal converter 52, the microwave letter of selection
The model ADF5355 of number converter, its microwave signal to produce 5.8GHz.
The initial microwave signal of 53 pairs of microwave amplifier carries out power amplification, obtains High-Power Microwave signal.At present, on the market
The model of microwave amplifier 53 has a variety of, and for example microwave signal converter 52HMC7357 can provide 29dB gain, the present embodiment
In, selection HMC1087F10 and HMC7357 cascades are used, and its gain reaches 40dB.
Microwave emitter 54 sends High-Power Microwave signal to microwave transmission unit 6.At present, the device of transmitting microwave has
It is a variety of, such as high-gain parabola antenna, electromagnetic horn or Waveguide slot antenna, it has compared with high emission efficiency, in this example,
It is not limited specifically.
Microwave transmission unit 6 receives the High-Power Microwave signal that microwave emitter 54 is sent, and it is whole to be sent to microwave
Flow device 7.In the application, the transmission of microwave transmission unit 6 and non-air progress High-Power Microwave signal is employed, compared to sky
Gas is transmitted, and microwave transmission unit 6 has good directional transmissions and higher conduction efficiency, meanwhile, decrease extraneous electricity
Interference of the magnetic field to High-Power Microwave signal.At present, can transmit the device of microwave signal has a variety of, in the present embodiment, using Jie
The big and simple in construction waveguide of small, power capacity is lost in matter.
Microwave rectification device 7 receives the microwave signal that microwave transmission unit 6 is transmitted, and is supply current by its rectification, supplies
Electric current is used to power for high pressure lateral circuit.In the application, microwave transmission unit 6 include the microwave receiver 71 that is sequentially connected with
Rectifier 72, microwave receiver 71 receives the High-Power Microwave signal that microwave transmission unit 6 is transmitted, and sends it to rectifier
72.Microwave receiver realizes that species is a variety of, in the present embodiment, using small volume, the micro-strip paster antenna being easily installed.
The output end of rectifier 72 connects the high pressure lateral circuit in active electric mutual inductor, and rectifier 72 is by High-Power Microwave
Signal rectification is defeated by high pressure lateral circuit into supply current, and by supply current, is that high pressure lateral circuit is powered.It is whole in the present embodiment
Device 72 is flowed using diode half-wave rectifier 72, diode selecting Schottky diode HSMS-286x series therein.Certainly,
Those skilled in the art can select other rectifiers according to actual needs, and it does not influence the realization of rectification function.
High-Power Microwave signal by microwave receiver 71 during rectifier 72 is reached, and harmonic wave therein can be back to
Microwave receiver 71, so as to cause secondary transmission of the microwave receiver 71 to harmonic wave, reduces 71 pairs of microwave receiver effectively letter
Number transmission power.In order to prevent the harmonic wave in High-Power Microwave signal to be back in microwave receiver 71, the present embodiment, micro-
Ripple receiver 71 on the connection circuit of rectifier 72 with setting the first wave filter 73.First wave filter 73 can filter out High-Power Microwave
Harmonic wave in signal, so that the Secondary Emission for avoiding harmonic wave backflow from causing, improves power supply quality and the stability of power supply.
In order to improve in the pure property of supply current, the present embodiment, on the connection circuit of rectifier 72 and high pressure lateral circuit 2
Provided with the second wave filter 74, the second wave filter 74 can filter out the harmonic wave in supply current, so as to improve power supply quality and power supply
Stability.
A kind of electric power system for active electronic transformer mesohigh lateral circuit that the embodiment of the present application is provided, the system bag
The microwave generating apparatus being sequentially connected, microwave transmission unit and microwave rectification device are included, wherein, microwave generating apparatus utilizes low pressure
The direct current signal generation High-Power Microwave signal of side, and sent out and reach microwave transmission unit；Microwave transmission unit is by high power
Microwave signal is sent to microwave rectification device；Microwave rectification device receives microwave signal, and is supply current, power supply by its rectification
Electric current is used to power for high pressure lateral circuit.The electric power system that the application is provided is powered using microwave generating apparatus, it is to avoid from height
Press the problem of electrical stability caused by power taking energy is poor on bus.While satisfaction power supply is moderately good, microwave generating apparatus
In microwave amplifier microwave signal can be amplified, and then also achieve the output of high-power power supply.
Above-described the application embodiment does not constitute the restriction to the application protection domain.
Claims (6)
1. a kind of electric power system of active electronic transformer mesohigh lateral circuit, it is characterised in that the system is included successively
Microwave generating apparatus (5), microwave transmission unit (6) and the microwave rectification device (7) of connection,
The microwave generating apparatus (5) is used to generate High-Power Microwave signal, and sends it to microwave transmission unit (6)；
The microwave transmission unit (6) is used to the High-Power Microwave signal being sent to the microwave rectification device (7)；
The microwave rectification device (7) is used to receive the microwave signal, and is supply current, the supply current by its rectification
For being powered for high pressure lateral circuit.
2. the system as claimed in claim 1, it is characterised in that the microwave generating apparatus (5) is adjustable including what is be sequentially connected
Voltage-stabilized power supply (51), microwave signal converter (52), microwave amplifier (53) and microwave emitter (54),
The adjustable stabilized voltage supply (51) is used to export a stable direct current signal；
The microwave signal converter (52) is used to the direct current signal being converted into initial microwave signal；
The microwave amplifier (53) is used to carry out power amplification to the initial microwave signal, obtains High-Power Microwave signal；
The microwave emitter (54) is used to send the High-Power Microwave signal to the microwave transmission unit (6).
3. the system as claimed in claim 1, it is characterised in that the microwave rectification device (7) includes the microwave being sequentially connected
Receiver (71) and rectifier (72), the output end of the rectifier (72) are used to connect the high-pressure side in active electric mutual inductor
Circuit；
The microwave receiver (71) receives the High-Power Microwave signal of microwave transmission unit (6) transmission, and is sent to
To the rectifier (72)；
The rectifier (72) is by the High-Power Microwave signal rectification into supply current.
4. system as claimed in claim 3, it is characterised in that the microwave receiver (71) and the connection electricity of rectifier (72)
Road is provided with the first wave filter (73), and first wave filter (73) is used to filter out the harmonic wave in the High-Power Microwave signal.
5. system as claimed in claim 3, it is characterised in that the rectifier (72) and the connection electricity of the high pressure lateral circuit
Road is provided with the second wave filter (74), and second wave filter (74) is used to filter out the harmonic wave in the supply current.
6. the system as claimed in claim 1, it is characterised in that the microwave transmission unit (6) includes waveguide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595160.9A CN107247162A (en) | 2017-07-20 | 2017-07-20 | The electric power system of active electronic transformer mesohigh lateral circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595160.9A CN107247162A (en) | 2017-07-20 | 2017-07-20 | The electric power system of active electronic transformer mesohigh lateral circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107247162A true CN107247162A (en) | 2017-10-13 |
Family
ID=60015336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710595160.9A Pending CN107247162A (en) | 2017-07-20 | 2017-07-20 | The electric power system of active electronic transformer mesohigh lateral circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107247162A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888935A (en) * | 2019-03-11 | 2019-06-14 | 南华大学 | A kind of power grid isolation electricity-fetching method and circuit |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309057A (en) * | 2008-06-19 | 2008-11-19 | 西安交通大学 | Ultrasonic energy supply apparatus of photoelectric current inductor |
| CN202997713U (en) * | 2012-12-25 | 2013-06-12 | 长安大学 | Microwave radial type radio energy supply system for pure electric vehicle |
| CN103607057A (en) * | 2013-12-02 | 2014-02-26 | 天津工业大学 | Electric energy controller design through wireless energy transmission technology |
| CN104201788A (en) * | 2014-06-17 | 2014-12-10 | 苏州工业职业技术学院 | Wireless energy supply system and method for metal pipeline detection microrobot |
| CN104467201A (en) * | 2014-11-19 | 2015-03-25 | 中国电子科技集团公司第二十研究所 | Small wireless network power transmission receiving unit |
| CN204334132U (en) * | 2015-01-07 | 2015-05-13 | 浙江大学 | A kind of microwave type wireless power supply system for wireless senser |
| CN204361766U (en) * | 2015-02-06 | 2015-05-27 | 国网四川省电力公司电力科学研究院 | On-line monitoring device for transmission line based on microwave transmission is got can system |
| CN205029402U (en) * | 2015-10-23 | 2016-02-10 | 刘南平 | Wireless charging system of microwave based on array antenna |
| CN106026424A (en) * | 2016-06-29 | 2016-10-12 | 国网内蒙古东部电力有限公司通辽供电公司 | Power supply system applied to power capacitor online monitoring system |
| CN106406416A (en) * | 2016-11-01 | 2017-02-15 | 郑州携能通信技术有限公司 | Microwave energy rectifying device and method |
| CN106532985A (en) * | 2016-12-22 | 2017-03-22 | 电子科技大学 | High-power 2.45GHz microwave wireless power transmission system |
| CN206945740U (en) * | 2017-07-20 | 2018-01-30 | 云南电网有限责任公司电力科学研究院 | The electric power system of active electronic transformer mesohigh lateral circuit |
-
2017
- 2017-07-20 CN CN201710595160.9A patent/CN107247162A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101309057A (en) * | 2008-06-19 | 2008-11-19 | 西安交通大学 | Ultrasonic energy supply apparatus of photoelectric current inductor |
| CN202997713U (en) * | 2012-12-25 | 2013-06-12 | 长安大学 | Microwave radial type radio energy supply system for pure electric vehicle |
| CN103607057A (en) * | 2013-12-02 | 2014-02-26 | 天津工业大学 | Electric energy controller design through wireless energy transmission technology |
| CN104201788A (en) * | 2014-06-17 | 2014-12-10 | 苏州工业职业技术学院 | Wireless energy supply system and method for metal pipeline detection microrobot |
| CN104467201A (en) * | 2014-11-19 | 2015-03-25 | 中国电子科技集团公司第二十研究所 | Small wireless network power transmission receiving unit |
| CN204334132U (en) * | 2015-01-07 | 2015-05-13 | 浙江大学 | A kind of microwave type wireless power supply system for wireless senser |
| CN204361766U (en) * | 2015-02-06 | 2015-05-27 | 国网四川省电力公司电力科学研究院 | On-line monitoring device for transmission line based on microwave transmission is got can system |
| CN205029402U (en) * | 2015-10-23 | 2016-02-10 | 刘南平 | Wireless charging system of microwave based on array antenna |
| CN106026424A (en) * | 2016-06-29 | 2016-10-12 | 国网内蒙古东部电力有限公司通辽供电公司 | Power supply system applied to power capacitor online monitoring system |
| CN106406416A (en) * | 2016-11-01 | 2017-02-15 | 郑州携能通信技术有限公司 | Microwave energy rectifying device and method |
| CN106532985A (en) * | 2016-12-22 | 2017-03-22 | 电子科技大学 | High-power 2.45GHz microwave wireless power transmission system |
| CN206945740U (en) * | 2017-07-20 | 2018-01-30 | 云南电网有限责任公司电力科学研究院 | The electric power system of active electronic transformer mesohigh lateral circuit |
Non-Patent Citations (1)
| Title |
|---|
| 付小鸥: "有源电子式互感器高压侧电路供能方案的研究", 《中国科技信息》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888935A (en) * | 2019-03-11 | 2019-06-14 | 南华大学 | A kind of power grid isolation electricity-fetching method and circuit |
| CN109888935B (en) * | 2019-03-11 | 2023-10-24 | 南华大学 | Power grid isolation electricity taking method and circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2011004479A (en) | Wireless power supply device | |
| CN104993613A (en) | Wireless electric energy transmission device using single capacitor to realize electric field resonance | |
| CN105186714A (en) | Low-power wireless charging circuit topological structure | |
| CN106532985A (en) | High-power 2.45GHz microwave wireless power transmission system | |
| WO2018188268A1 (en) | Remote wireless charging system | |
| WO2017181454A1 (en) | Wireless communication system providing power transfer | |
| CN102590576A (en) | Active photoelectric current transformer with wireless induction power supply function | |
| CN206945740U (en) | The electric power system of active electronic transformer mesohigh lateral circuit | |
| KR101022760B1 (en) | System for regeneration of electrical energy by wireless radiowave | |
| CN107247162A (en) | The electric power system of active electronic transformer mesohigh lateral circuit | |
| CN203590560U (en) | LED drive circuit and LED lamp | |
| CN109884380A (en) | A kind of digital radio detection converter and transmission line of electricity monitoring device | |
| CN106249050A (en) | A kind of high resistance measuring instrument | |
| CN203205991U (en) | Wireless power transmission system applied to high-voltage line equipment power supply | |
| CN109347215A (en) | A kind of UI type electromagnetic coil structure and biography energy method for high-power long distance radio energy-transmitting | |
| CN102244418A (en) | Electronic mutual inductor working power supply | |
| CN213754332U (en) | Analog signal isolation transmission circuit, drive control system and electric appliance | |
| CN209545447U (en) | A kind of magnetic isolation feedback circuit | |
| CN209690446U (en) | Distribution line insulation detection device | |
| KR102190132B1 (en) | Wireless transmit receive system for transmits data and power at the same time | |
| CN112491167A (en) | Microwave wireless power supply system and method applied to power grid transmission line monitoring equipment | |
| CN203406792U (en) | Standby control module and power supply apparatus | |
| CN110957928A (en) | Alternating current large current source circuit based on impedance compensation method and impedance compensation method thereof | |
| CN202602547U (en) | LED isolation-type double power supply | |
| CN204103575U (en) | A kind of wireless charging device |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171013 |