CN206584812U - A kind of optical fiber transferring high voltage current transformer of eccentrically arranged type - Google Patents
A kind of optical fiber transferring high voltage current transformer of eccentrically arranged type Download PDFInfo
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- CN206584812U CN206584812U CN201720067142.9U CN201720067142U CN206584812U CN 206584812 U CN206584812 U CN 206584812U CN 201720067142 U CN201720067142 U CN 201720067142U CN 206584812 U CN206584812 U CN 206584812U
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Abstract
The utility model discloses a kind of optical fiber transferring high voltage current transformer of eccentrically arranged type, the real-time monitoring of high-tension circuit wire current is realized.The current transformer is connected by the tap at wire two ends in circuit under test, and the induced-current that magnetic ring coil CT1 is produced provides a reliable and stable bias supply, i.e. LASER Discharge Tube as energy, to laser bias circuit and provides a basic bias current；Magnetic ring coil CT2 provides the current signal that measurement is obtained, and current signal is carried on laser bias circuit by coupled capacitor；The light intensity for the laser that LASER Discharge Tube is sent is directly proportional to loop current, signal is given to laser pick-off pipe by laser along optical fiber, current signal is converted into voltage signal by current-to-voltage converting circuit, after filtering after circuit, the voltage signal collected is transmitted to A/D converter circuit and carries out analog quantity to the conversion of digital quantity, these data are carried out after the operations such as storage computing by MCU, host computer is given by data by ethernet communication module.
Description
Technical field
The utility model is related to a kind of high-tension current inductor, more particularly to a kind of eccentrically arranged type optical fiber transferring high voltage electric current
High-tension current inductor.
Background technology
High-tension current inductor is that the high-voltage signal in power network is converted into transmission for low pressure low current signal, is power system
Metering, monitoring, relay protection, automatics etc. the unified, device of the current signal of specification is provided, while being also to meet electric
Isolation, it is ensured that the visual plant of the person and security appliance.Electromagnetic current transducer is to realize electric current by electromagnetic induction principle
Conversion, it has the advantages that stability, highly reliable, but its secondary winding needs ground connection, required in order to meet insulating requirements
Iron core sub-volume is larger and weight weight with insulation, cost is higher, and is easily disturbed with non-digitalization analog signalses
The shortcomings of.
The content of the invention
The purpose of this utility model：A kind of optical fiber transferring high voltage current transformer device of new eccentrically arranged type is proposed, should
Device uses optical fiber transmission technique, and voltage bias technology realizes the accurate measurement of high-tension current, solves electromagnetic current transducer
Volume is big, weight weight, and cost is high, and the shortcomings of being easily disturbed realizes the high-tension current inductor of Ethernet data signal output.
To realize the purpose of this utility model, technical scheme is：
The current transformer is connected by wire tap in magnetic ring coil CT1 and magnetic ring coil CT2.Magnetic ring coil CT2
It is connected with laser bias circuit.The incoming DC-DC circuit of DC voltage of the output of metal-oxide-semiconductor current rectifying and wave filtering circuit.DC-DC circuit is defeated
Go out reliable and stable DC voltage and give laser bias circuit.Energy, process are used as by the use of the induced-current that magnetic ring coil CT1 is produced
There is provided a stable direct current basic bias current for LASER Discharge Tube D1 after rectifying and wave-filtering and voltage stabilizing, magnetic ring coil CT2 is felt
The ac current signal that should be obtained will be coupled on the LASER Discharge Tube D1 basic bias current of direct current wherein magnetic ring coil CT1 with
Metal-oxide-semiconductor current rectifying and wave filtering circuit is connected.The laser of LASER Discharge Tube D1 transmittings, by hollow insulator, is transferred to laser by optical fiber
On reception pipe D2.Laser pick-off pipe D2 is received in optical fiber after laser letter, converts optical signals into certain current signal, is passed
It is defeated by circuit and turns potential circuit.Electric current turns potential circuit and the current signal received is converted into voltage signal again, is transmitted to AD conversion
Circuit.Analog quantity is converted into after digital quantity being transmitted to MCU by AD change-over circuits.After MCU is by calculation process, pass through ether Netcom
Module is interrogated, measurement data is sent to host computer.
The utility model discloses a kind of optical fiber transferring high voltage current transformer of eccentrically arranged type, including two magnetic ring coils,
Wire, metal-oxide-semiconductor current rectifying and wave filtering circuit, DC-DC mu balanced circuits, laser bias circuit, optical fiber, measurement signal receiving processing circuit,
AD change-over circuits, Switching Power Supply, MCU, ethernet communication module, host computer.Integrated circuit uses passive design, passes through one
The energy that magnetic ring coil is produced provides reliable and stable bias supply to laser bias circuit.Light is used in high-pressure side and low-pressure side
Isolation, improves the security of device.The measurement signal received is changed in low-pressure side, filtered, subtracted to greatest extent
The distortion of small-signal.Measurement data after processing, after MCU calculation process, by ethernet communication module, is passed by Ethernet
It is defeated by the host computer of networking.Compared with existing high-tension current inductor, device volume is reduced, oneself power consumption is reduced, carried
High security, and the effect monitored in real time can be realized by network.
1. passive design.The induced-current that magnetic ring coil is produced be make use of as energy, through over commutation, filtering, surely
A reliable and stable bias supply, i.e. LASER Discharge Tube are provided one basic biased electrical to laser bias circuit is provided after pressure
Stream；Another magnetic ring coil provides the current signal that measurement is obtained, and current signal is carried in into laser bias by coupled capacitor
On circuit.
2. the conducting resistance and conduction voltage drop of rectification circuit can be reduced using metal-oxide-semiconductor rectifier bridge structure, so as to reduce energy
Loss.
3. pass through optical fiber transmission signal.High-pressure side does not have the connection of direct circuit with low-pressure side, but by optical fiber
Light transmit signal, that is, realize optically isolated so that the insulating properties of device get a promotion, electromagnetism interference performance is strong, peace
Full property is higher.
4. the design of measurement signal process circuit.The circuit is used to handle the measurement signal that laser pick-off pipe is received, and leads to
Overcurrent turns potential circuit and filter circuit, to greatest extent reduction measurement current signal, it is ensured that measurement current signal can
By property.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the optical fiber transferring high voltage current transformer of eccentrically arranged type of the utility model.
Fig. 2 is a kind of hardware circuit sketch of the optical fiber transferring high voltage current transformer of eccentrically arranged type of the utility model.
1、15：Caisson；2：Metal-oxide-semiconductor current rectifying and wave filtering circuit；3：DC-DC mu balanced circuits；4、5：Magnetic ring coil；6：It is hollow exhausted
Edge；7：Optical fiber；8：Electric current turns potential circuit；9：Filter circuit；10：A/D converter circuit；11：MCU；12：Ethernet communication mould
Block；13：Host computer；14：Switching Power Supply；16：Wire；17：Laser bias circuit.
Embodiment：
The optical fiber transferring high voltage current transformer of a kind of eccentrically arranged type, as shown in figure 1, including caisson (1) and (15), MOS
Pipe current rectifying and wave filtering circuit (2), DC-DC circuit (3), magnetic ring coil CT1 (4), magnetic ring coil CT2 (5), hollow insulator (6),
Optical fiber (7), electric current turn potential circuit (8), filter circuit (9), A/D converter circuit (10), MCU (11), ethernet communication module
(12), host computer (13), Switching Power Supply (14), laser bias circuit (17), measurement signal receiving processing circuit (19), laser hair
Penetrate pipe D1, laser pick-off pipe D2.Magnetic ring coil CT1 (4) one end is connected with the Vin1 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), another
End is connected with the Vin2 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2).Magnetic ring coil CT2 (5) one end and laser bias circuit (17)
B points be connected, another termination AGND.The Vout pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2) connect with the Vin pin of DC-DC circuit (3)
Connect, the AGND pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2) meet AGND.The VDC pin of DC-DC circuit (3) and laser bias circuit (17)
The connection of VDC pin, the AGND pin of DC-DC circuit (3) meet AGND.The laser of LASER Discharge Tube D1 transmittings is by optical fiber (7), by sky
Core insulation (6) is transferred on laser pick-off pipe D2.VCC pin output positive voltage VCC, VEE the pin output of Switching Power Supply (14) is negative
Voltage VEE, GND pin meets GND.Laser pick-off pipe D2 negative pole meets positive voltage VCC, and laser pick-off pipe D2 positive pole and electric current turn electricity
The In pin connection of volt circuit (8).The Out pin that electric current turns potential circuit (8) are connected with the In pin of filter circuit (9).Filter circuit
(9) Out pin are connected with the In ends of AD change-over circuits (10).The Out ends of A/D converter circuit (10) and MCU (11) connection.
MCU (11) is communicated with ethernet communication module (12).Ethernet communication module (12) is led to by Ethernet and host computer (13)
News.
In the tap series connection access circuit under test that the current transformer passes through wire (16).Pass through wire (16) when there is electric current
When, the spiral winding of magnetic ring coil CT1 (4) and the winding on magnetic ring coil CT2 (5) can produce induced-current, magnetic ring coil CT1
(4) induced-current produced is transferred to metal-oxide-semiconductor current rectifying and wave filtering circuit, and the induced-current that magnetic ring coil CT2 (5) is produced passes through resistance
R9, which is changed into after magnitude of voltage, to be transferred to laser bias circuit (17) and is biased, the signal after biasing by LASER Discharge Tube D1 and
The incoming electric current of signal is turned potential circuit (8), after filtering circuit by optical fiber (7) incoming laser pick-off pipe D2, laser pick-off pipe D2
(9) it is converted into after handling by A/D converter circuit after data signal, through MCU (11) computing, processing, fitting, passes through ether Netcom
News module (12) transfers data to host computer (13).
As shown in Fig. 2 the conducting resistance and conduction voltage drop of rectification circuit can be reduced using metal-oxide-semiconductor rectifier bridge structure, so that
Reduce energy loss.Metal-oxide-semiconductor current rectifying and wave filtering circuit include NMOS tube N1, N2, PMOS P1, P2, resistance R1, filter capacitor C3,
Electric capacity C1, electric capacity C2.Resistance R1 one end is connected with the Vin1 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), and the other end is managed whole with MOS
Flow the Vin2 pin connection of filter circuit (2).NMOS tube N1 drain electrode is connected with the Vin1 of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), source
Pole is connected with the AGND pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), and grid is connected with the Vin2 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2).
NMOS tube N2 drain electrode is connected with the Vin2 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), source electrode and metal-oxide-semiconductor current rectifying and wave filtering circuit (2)
AGND pin are connected, and grid is connected with the Vin1 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2).Described PMOS P1 drain electrode and metal-oxide-semiconductor
The Vin1 connections of current rectifying and wave filtering circuit (2), source electrode is connected with the Vout pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), grid and metal-oxide-semiconductor
The Vin2 connections of current rectifying and wave filtering circuit (2).PMOS P2 drain electrode is connected with the Vin2 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2),
Source electrode is connected with the Vout pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), and grid is connected with metal-oxide-semiconductor current rectifying and wave filtering circuit (2) Vin1.Filter
Ripple electric capacity C3 one end is connected with the Vout pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), the other end and metal-oxide-semiconductor current rectifying and wave filtering circuit
(2) AGND pin connection.Electric capacity C1 one end is connected with MOS pipes current rectifying and wave filtering circuit (2) Vin2 pin, and the other end is whole with metal-oxide-semiconductor
Flow the AGND pin connection of filter circuit (2).Electric capacity C2 one end is connected with the Vin2 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), another
End is connected with the AGND pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2).Operation principle：Alternating current is converted into alternating voltage by resistance R1
After be transferred to metal-oxide-semiconductor rectifier bridge, rectifier bridge is made up of NMOS tube N1, N2, PMOS P1, P2, when alternating current is positive half period
When, N2, P1 conducting, when alternating current is negative half-cycle, N1, P2 conducting.The filtered electric capacity of DC voltage of rectifier bridge output
Exported after C3 filtering and give DC-DC mu balanced circuits (3).DC-DC mu balanced circuits (3) output galvanic current pressure is laser bias
Circuit (17) provides bias supply.
As shown in Fig. 2 laser bias circuit (17) includes：Resistance R2, resistance R3, resistance R9, electric capacity C4, LASER Discharge Tube
D1.Resistance R2 one end is connected with the VDC pin of laser bias circuit (17), and the A points of the other end and laser bias circuit (17) connect
Connect.Resistance R3 one end is connected with the A points of laser bias circuit (17), and the other end is connected with LASER Discharge Tube D1 positive pole.Resistance
R9 one end is connected with the B points of laser bias circuit (17), another termination AGND.Described electric capacity C4 one end and laser bias circuit
(17) B points connection, the other end is connected with the A points of laser bias circuit (17).LASER Discharge Tube D1 negative pole meets AGND.Work
Principle：Magnitude of voltage on LASER Discharge Tube D1 is exactly the bias voltage and coupling electricity of the VDC pin input of laser bias circuit (17)
Hold the coupled voltages sum on C4, after current-limiting resistance R3 current limlitings, incoming LASER Discharge Tube D1 is converted into the light letter of certain light intensity
Number, by the incoming laser pick-off pipe D2 of optical fiber (7).
As shown in Fig. 2 measurement signal receiving processing circuit includes laser pick-off pipe D2, electric current turns potential circuit (8), filters
Circuit (9).Laser pick-off pipe D2 connection optical fiber (7) receives laser signal, and laser pick-off pipe D2 cathode tube meets positive voltage VCC,
The In pin that positive pole turns potential circuit (8) with electric current are connected.Circuit, which turns potential circuit (8), includes amplifier A1, resistance R4, resistance R5.
The In pin that resistance R4 one end turns potential circuit (8) with electric current are connected, and the other end turns the 3 of the amplifier A1 of potential circuit (8) with electric current
Pin is connected.Resistance R5 one end is connected with amplifier A1 3 pin, and the other end is connected with amplifier A1 6 pin.Amplifier A1 2 pin meet GND, 4
Pin meets negative voltage VEE, and 6 pin connect the Out pin that electric current turns potential circuit (8), and 7 pin meet positive voltage VCC.Filter circuit (9) includes fortune
Put A2, resistance R6, resistance R7, resistance R8, electric capacity C5.The In pin of the termination filter circuits of resistance R6 mono- (9), another termination amplifier A2
3 pin.A resistance R7 termination amplifier A2 2 pin, another termination GND.The termination amplifiers of resistance R8 mono- A2 3 pin, another termination
Amplifier A2 6 pin.The termination amplifiers of electric capacity C5 mono- A2 3 pin, another termination amplifier A2 6 pin.Amplifier A2 4 pin connect negative voltage
VEE, 6 pin connect the Out pin of filter circuit (9), and 7 pin meet positive voltage VCC.Operation principle：The light letter that LASER Discharge Tube D2 is received
Number a certain size current signal is converted into, signal turns potential circuit (8) through electric current and changes into the incoming filter circuit of voltage signal
(9), filter circuit (9) is a low-pass filter circuit, and the signal after device is sampled by AD after filtering, MCU software processings, is led to
Cross communication interface and be connected that there is provided give host computer one digitized current output waveform signal with Ethernet interface.
Claims (5)
1. the optical fiber transferring high voltage current transformer of a kind of eccentrically arranged type, it is characterised in that including caisson (1) and (15), metal-oxide-semiconductor
Current rectifying and wave filtering circuit (2), DC-DC circuit (3), magnetic ring coil CT1 (4), magnetic ring coil CT2 (5), hollow insulator (6), optical fiber
(7), electric current turn potential circuit (8), filter circuit (9), A/D converter circuit (10), MCU (11), ethernet communication module (12),
Host computer (13), Switching Power Supply (14), wire (16), laser bias circuit (17), LASER Discharge Tube D1, laser pick-off pipe D2,
Described metal-oxide-semiconductor current rectifying and wave filtering circuit (2), DC-DC circuit (3), magnetic ring coil CT1 (4), magnetic ring coil CT2 (5), wire
(16), laser bias circuit (17), LASER Discharge Tube D1 are placed in caisson (1), and described wire (16) runs through magnet ring wire
Enclose CT1 (4) and magnetic ring coil CT2 (5), described magnetic ring coil CT1 (4) one end and the Vin1 of metal-oxide-semiconductor current rectifying and wave filtering circuit (2)
Pin is connected, and the other end is connected with the Vin2 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), described magnetic ring coil CT2 (5) one end and
The B ends of laser bias circuit (17) are connected, another termination AGND, the output Vout pin of described metal-oxide-semiconductor current rectifying and wave filtering circuit (2)
It is connected with the input Vin pin of DC-DC circuit (3), its AGND pin meets AGND, the output VDC of described DC-DC circuit (3) is with swashing
The VDC pin connection of optical biasing circuit (17), its AGND pin meets AGND, described LASER Discharge Tube D1 positive poles and laser bias circuit
(17) C-terminal is connected, and its negative pole is connected with AGND, and the laser that it is launched is transferred to by optical fiber (7) by hollow insulator (6)
On laser pick-off pipe D2, described electric current turn potential circuit (8), filter circuit (9), A/D converter circuit (10), MCU (11), with
Too net communication module (12), Switching Power Supply (14) are placed in caisson (15), and the VCC pin of described Switching Power Supply (14) are exported
Positive voltage VCC, VEE pin output negative voltage VEE, GND pin meet GND, are that electric current turns potential circuit (8), filter circuit (9), AD turns
Change circuit (10), MCU (11), ethernet communication module (12) and working power is provided, described laser pick-off pipe D2 negative pole connects
Positive voltage VCC, the In pin that positive pole turns potential circuit (8) with electric current are connected, described electric current turn the Out pin of potential circuit (8) with
The In pin connection of filter circuit (9), the Out pin of described filter circuit (9) are connected with the In ends of A/D converter circuit (10), described
A/D converter circuit (10) output Out and MCU (11) connection, described MCU (11) leads to ethernet communication module (12)
News, described ethernet communication module (12) is communicated by Ethernet and host computer (13).
2. the optical fiber transferring high voltage current transformer of eccentrically arranged type according to claim 1, it is characterised in that utilize magnetic ring coil
The induced-current that CT1 (4) is produced as energy, after rectifying and wave-filtering and voltage stabilizing for LASER Discharge Tube D1 provide one it is stable
Direct current basis bias current, magnetic ring coil CT2 (5) is sensed obtained ac current signal and will be coupled into LASER Discharge Tube D1's
On the bias current of direct current basis.
3. the optical fiber transferring high voltage current transformer of eccentrically arranged type according to claim 1, it is characterised in that described metal-oxide-semiconductor is whole
Stream filter circuit (2) includes：NMOS tube N1, N2, PMOS P1, P2, resistance R1, filter capacitor C3, electric capacity C1, electric capacity C2；Institute
The resistance R1 stated one end is connected with the Vin1 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), the other end and metal-oxide-semiconductor current rectifying and wave filtering circuit
(2) Vin2 pin connection；Described NMOS tube N1 drain electrode is connected with the Vin1 of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), source electrode with
The AGND pin connection of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), grid is connected with the Vin2 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2)；It is described
NMOS tube N2 drain electrode be connected with the Vin2 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), source electrode and metal-oxide-semiconductor current rectifying and wave filtering circuit (2)
The connection of AGND pin, grid is connected with the Vin1 pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), described PMOS P1 drain electrode and MOS
The Vin1 connections of pipe current rectifying and wave filtering circuit (2), source electrode is connected with the Vout pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), grid and MOS
The Vin2 connections of pipe current rectifying and wave filtering circuit (2)；Described PMOS P2 drain electrode and the Vin2 of metal-oxide-semiconductor current rectifying and wave filtering circuit (2)
Pin is connected, and source electrode is connected with the Vout pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), grid and metal-oxide-semiconductor current rectifying and wave filtering circuit (2) Vin1
Connection, described filter capacitor C3 one end is connected with the Vout pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), and the other end is whole with metal-oxide-semiconductor
The AGND pin connection of filter circuit (2) is flowed, described electric capacity C1 one end is connected with metal-oxide-semiconductor current rectifying and wave filtering circuit (2) Vin2 pin,
The other end is connected with the AGND pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2), described electric capacity C2 one end and metal-oxide-semiconductor rectifying and wave-filtering electricity
The Vin2 pin connection on road (2), the other end is connected with the AGND pin of metal-oxide-semiconductor current rectifying and wave filtering circuit (2).
4. the optical fiber transferring high voltage current transformer of eccentrically arranged type according to claim 1, it is characterised in that the laser bias
Circuit (17) includes：Resistance R2, resistance R3, resistance R9, electric capacity C4, described resistance R2 one end and laser bias circuit (17)
VDC pin are connected, and the other end is connected with the A points of laser bias circuit (17), described resistance R3 one end and laser bias circuit
(17) A points connection, other end C is connected with LASER Discharge Tube D1 positive pole, described resistance R9 one end and laser bias circuit
(17) B points connection, another termination AGND, described electric capacity C4 one end is connected with the B points of laser bias circuit (17), the other end
It is connected with the A points of laser bias circuit (17).
5. the optical fiber transferring high voltage current transformer of eccentrically arranged type according to claim 1, it is characterised in that described laser connects
Closed tube D2 connection optical fiber (7) receives laser signal, and laser pick-off pipe D2 cathode tube meets positive voltage VCC, and positive pole turns electricity with electric current
The In pin connection of volt circuit (8), described electric current, which turns potential circuit (8), includes amplifier A1, resistance R4, resistance R5, described electricity
Resistance R4 one end is connected with the In pin that electric current turns potential circuit (8), and the other end turns the amplifier A1 of potential circuit (8) 3 pin with electric current
Connection, described resistance R5 one end is connected with amplifier A1 3 pin, and the other end is connected with amplifier A1 6 pin, described amplifier A1's
2 pin meet GND, and 4 pin meet negative voltage VEE, and 6 pin connect the Out pin that electric current turns potential circuit (8), and 7 pin meet positive voltage VCC, described filter
Wave circuit (9) includes amplifier A2, resistance R6, resistance R7, resistance R8, electric capacity C5, the described termination filter circuits of resistance R6 mono- (9)
In pin, another termination amplifier A2 3 pin, a described resistance R7 termination amplifier A2 2 pin, another termination GND is described
The termination amplifiers of resistance R8 mono- A2 3 pin, another termination amplifier A2 6 pin, described electric capacity C5 mono- terminates amplifier A2 3 pin, separately
One termination amplifier A2 6 pin, described amplifier A2 4 pin meet negative voltage VEE, and 6 pin connect the Out pin of filter circuit (9), and 7 pin connect
Positive voltage VCC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720067142.9U CN206584812U (en) | 2017-01-17 | 2017-01-17 | A kind of optical fiber transferring high voltage current transformer of eccentrically arranged type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720067142.9U CN206584812U (en) | 2017-01-17 | 2017-01-17 | A kind of optical fiber transferring high voltage current transformer of eccentrically arranged type |
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| Publication Number | Publication Date |
|---|---|
| CN206584812U true CN206584812U (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720067142.9U Expired - Fee Related CN206584812U (en) | 2017-01-17 | 2017-01-17 | A kind of optical fiber transferring high voltage current transformer of eccentrically arranged type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320893A (en) * | 2017-01-17 | 2018-07-24 | 中国计量大学 | A kind of optical fiber transferring high voltage current transformer of eccentrically arranged type |
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2017
- 2017-01-17 CN CN201720067142.9U patent/CN206584812U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320893A (en) * | 2017-01-17 | 2018-07-24 | 中国计量大学 | A kind of optical fiber transferring high voltage current transformer of eccentrically arranged type |
| CN108320893B (en) * | 2017-01-17 | 2024-04-12 | 中国计量大学 | Offset type optical fiber transmission high-voltage current transformer |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20180117 |