CN208239601U - Optical current transformer temperature drift correction test device - Google Patents
Optical current transformer temperature drift correction test device Download PDFInfo
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- CN208239601U CN208239601U CN201820881494.2U CN201820881494U CN208239601U CN 208239601 U CN208239601 U CN 208239601U CN 201820881494 U CN201820881494 U CN 201820881494U CN 208239601 U CN208239601 U CN 208239601U
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- 238000012360 testing method Methods 0.000 title abstract description 3
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 description 10
- 239000000835 fiber Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 2
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- 230000005350 ferromagnetic resonance Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
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Abstract
The utility model discloses an optics current transformer temperature drift correction test device, include: the device comprises a standard current transformer, an optical current transformer to be corrected, a power supply, a constant temperature device and a data processing device; the power supply is respectively connected with the standard current transformer and the optical current transformer to be corrected, and the standard current transformer is also connected with the optical current transformer to be corrected; the data processing device is respectively connected with the standard current transformer and the optical current transformer to be corrected; the optical current transformer to be corrected is arranged in the constant temperature device. Adopt the embodiment of the utility model provides a, can revise optics current transformer's temperature drift, also can assess optics current transformer's temperature stability simultaneously.
Description
Technical field
The utility model relates to optical current mutual inductor technical fields more particularly to a kind of optical current mutual inductor temperature drift to repair
Positive experimental rig.
Background technique
Optical current mutual inductor have insulation system is simple, small in size, light-weight, the linearity is good, there is no magnetic saturation with
The advantages that ferromagnetic resonance problem, adapts to the requirement of national smart grid development plan, it is mutual to have become electronic type optical current at present
The direction of sensor manufacturer primary study.Most important component is sensor fibre in optical current mutual inductor, and sensor fibre is enclosed
After rotating for several weeks around Primary Conductor, the current signal in tested Primary Conductor can with direct proportion be sensed.But sensor fibre
Verdet constant (characteristic constant of substance) can be fluctuated with temperature, while sensor fibre can also generate temperature cause linearly it is two-fold
It penetrates, causes the electric current of measurement also to fluctuate with temperature, temperature drift problems occur.
Utility model content
The purpose of the utility model embodiment is to provide a kind of optical current mutual inductor correction of temperature drift experimental rig, can be right
The temperature drift of optical current mutual inductor is modified, while can also be commented the temperature stability of optical current mutual inductor
Estimate.
To achieve the above object, the utility model embodiment provides a kind of optical current mutual inductor correction of temperature drift test dress
It sets, comprising: standard current transformer, optical current mutual inductor to be modified, power supply, thermostat and data processing equipment；Wherein,
The power supply is separately connected the standard current transformer and the optical current mutual inductor to be modified, the standard
Current transformer is also connect with the optical current mutual inductor to be modified；
The data processing equipment is separately connected the standard current transformer and the optical current mutual inductor to be modified；
The optical current mutual inductor to be modified is set in the thermostat.
Compared with prior art, optical current mutual inductor correction of temperature drift experimental rig disclosed by the utility model, pass through by
Standard current transformer and optical current mutual inductor to be modified and power supply are connected in series, at the same power supply to standard current transformer and
Optical current mutual inductor to be modified is powered, then changes the temperature of optical current mutual inductor to be modified by thermostat, thus number
The current value acquired according to processing unit according to standard current transformer and the current value of optical current mutual inductor to be modified acquisition obtain
To the temperature drift compensation amount of optical current mutual inductor to be modified.It solves in the prior art because temperature causes optical current mutual inductor to be surveyed
The electric current of amount is also fluctuated with temperature, and the problem of temperature drift occurs in current measurement value, can be to optical current mutual inductor
Temperature drift is modified, while can also be assessed the temperature stability of optical current mutual inductor.
As an improvement of the above scheme, the optical current mutual inductor correction of temperature drift experimental rig further includes temperature control system
System, the temperature control system are connect with the thermostat.
As an improvement of the above scheme, the optical current mutual inductor correction of temperature drift experimental rig further includes power supply control system
System, the power control system are connect with the power supply.
As an improvement of the above scheme, the temperature parameter of the thermostat includes range of temperature, temperature initial value
With temperature scanning step-length.
As an improvement of the above scheme, the current parameters of the power supply include curent change range, electric current initial value and electricity
Scan flow step-length.
Detailed description of the invention
Fig. 1 is a kind of structural frames of optical current mutual inductor correction of temperature drift experimental rig provided by the embodiment of the utility model
Figure.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
It is a kind of optical current mutual inductor correction of temperature drift experimental rig provided by the embodiment of the utility model referring to Fig. 1, Fig. 1
Structural block diagram.It include: at standard current transformer 1, optical current mutual inductor to be modified 2, power supply 3, thermostat 4 and data
Manage device 5；Wherein,
The power supply 3 is separately connected the standard current transformer 1 and the optical current mutual inductor to be modified 2, described
Standard current transformer 1 is also connect with the optical current mutual inductor 2 to be modified；
The data processing equipment 5 is separately connected the standard current transformer 1 and the optical current mutual inductance to be modified
Device 2；
The optical current mutual inductor to be modified 2 is set in the thermostat.
Preferably, the optical current mutual inductor correction of temperature drift experimental rig further includes temperature control system 6, the temperature
Control system 6 is connect with the thermostat 4.
Preferably, the optical current mutual inductor correction of temperature drift experimental rig further includes power control system 7, the power supply
Control system 7 is connect with the power supply 3.
It is worth noting that the standard current transformer of use can be and will not send out in the utility model embodiment
Raw temperature drift phenomenon, that is, current measurement value will not be with the current transformer that varies with temperature, from without with external environment temperature
The variation of degree or curent change lead to temperature change and cause the problem of the inaccuracy of itself current measurement value, and then can be with
Optical current mutual inductor compares.
Specifically, the standard current transformer 1 and the optical current mutual inductor to be modified 2 are gone here and there with the power supply 3
Connection connection, to form a closed circuit.Preferably, the power supply 3 is connect with the power control system 7, passes through the electricity
Source control system 7 adjusts the electric current of the power supply 3.
Specifically, setting the current parameters of the power supply 3.It preferably, can be according to the optical current mutual inductance to be modified
The current measurement range of device 2 sets the current parameters of the power supply 3；Wherein, the current parameters include curent change range,
Electric current initial value and current scanning step-length.Preferably, in the present embodiment, the curent change range can be 0A~1000A,
The electric current initial value can be 0A, and the current scanning step-length can be 10 steps, but in other embodiments, and the electric current becomes
Changing range, the electric current initial value and the current scanning step-length can be any given, all in the protection scope of the utility model
It is interior.The power supply 3 scans altogether 11 times to 1000A since the electric current initial value 0A, then scans (i.e. setting institute second
State the current value of power supply 3) be 100A, and so on, it is preferred that the power supply 3 can also from the curent change range 0A~
Other numerical value in 1000A start to scan.
The temperature parameter of the thermostat 4 is concurrently set, the thermostat 4 is for changing the optics electricity to be modified
The temperature of current transformer 2.Preferably, temperature requirement can be applied according to the optical current mutual inductor 2 to be modified, sets institute
State the temperature parameter of thermostat 4；Wherein, the temperature parameter includes range of temperature, temperature initial value and temperature scanning
Step-length.Preferably, in the present embodiment, the range of temperature can be -30 DEG C~50 DEG C, and the temperature initial value is -
30 DEG C, the temperature scanning step-length is 9, but in other embodiments, the range of temperature, the temperature initial value and institute
Stating temperature scanning step-length can be any given, all within the protection scope of the present utility model.The thermostat 4 is from the temperature
Initial value is -30 DEG C of beginnings, to 50 DEG C of scanning 9 times altogether, then scanning (setting the temperature of the thermostat 4) for the second time
It is -20 DEG C, and so on, it is preferred that the thermostat 4 can also be from -30 DEG C~50 DEG C of the range of temperature
Other numerical value start to scan.
Specifically, starting the power supply 3, the current value of the power supply 3 is set at this time as pre-set current value, it is preferred that institute
Stating pre-set current value can be the electric current initial value 0A, be also possible to other in the curent change range 0A~1000A
Numerical value.The current value that i.e. standard current transformer 1 acquires at this time is the pre-set current value, the optics electricity to be modified
The current value that current transformer 2 acquires is the pre-set current value.The data processing equipment 5 obtains the pre-set current value.
Specifically, being preset temperature value, the constant temperature by the temperature that temperature control system 6 adjusts the thermostat 4
Device 4 for changing the optical current mutual inductor 2 to be modified temperature.Preferably, the preset temperature value can be arranged
For -30 DEG C of the temperature initial value, or the numerical value being set as in -30 DEG C of the range of temperature~50 DEG C.At this point, described
The Verdet constant (characteristic constant of substance) of optical current mutual inductor 2 to be modified can be fluctuated with temperature, while sense light
Fibre can also generate temperature and cause linear birefrigence, cause the electric current of measurement also to fluctuate with temperature, temperature drift problems occur.Then
The data processing equipment 5 obtains the measurement current value that the optical current mutual inductor to be modified 2 acquires.
In the case where the current value of the power supply 3 remains unchanged, by described in the temperature control system 6 constantly adjustment
The preset temperature value of thermostat 4, the data processing equipment 5 obtain the optical current mutual inductor to be modified 2 in same electricity
The temperature drift compensation amount of stream, different temperatures.Then in the case where the temperature of the thermostat 4 remains unchanged, pass through the electricity
Source control system 7 constantly adjusts the electric current of the power supply 3, and it is mutual that the data processing equipment 5 obtains the optical current to be modified
Temperature drift compensation amount of the sensor 2 in same temperature, different electric currents.Concrete outcome can be found in table 1, when the compensation rate in table 1 is negative value
Indicate that the measured value of the standard current transformer 1 is less than the measured value of the optical current mutual inductor 2 to be modified.
Table 1: the temperature drift compensation amount of different temperatures, different electric currents
Then, it when continuing to use the optical current mutual inductor to be modified 2 work backward, can be obtained by table 1 described
The electric current correction value (measured value of optical current mutual inductor 2 to be modified+temperature drift compensation amount) of optical current mutual inductor 2 to be modified,
The electric current correction value is the normal measurements of the optical current mutual inductor to be modified 2.
When it is implemented, by by standard current transformer 1 and optical current mutual inductor to be modified 2 and 3 company of series connection of power supply
It connects, while power supply 3 is powered to then standard current transformer 1 and optical current mutual inductor to be modified 2, then passes through thermostat 4
Change the temperature of optical current mutual inductor 2 to be modified, thus data processing equipment 5 acquired according to standard current transformer 1 it is pre-
If the measurement current value that current value and optical current mutual inductor to be modified 2 acquire, obtains the temperature of optical current mutual inductor 2 to be modified
Float compensation rate.
Compared with prior art, optical current mutual inductor correction of temperature drift experimental rig disclosed by the utility model, solves
In the prior art because the electric current that temperature causes optical current mutual inductor to measure also is fluctuated with temperature, there is temperature in current measurement value
The problem of degree drift, the temperature drift of optical current mutual inductor can be modified, while can also be to optical current mutual inductance
The temperature stability of device is assessed.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (5)
1. a kind of optical current mutual inductor correction of temperature drift experimental rig characterized by comprising standard current transformer, to be repaired
Positive optical current mutual inductor, power supply, thermostat and data processing equipment；Wherein,
The power supply is separately connected the standard current transformer and the optical current mutual inductor to be modified, the normalized current
Mutual inductor is also connect with the optical current mutual inductor to be modified；
The data processing equipment is separately connected the standard current transformer and the optical current mutual inductor to be modified；
The optical current mutual inductor to be modified is set in the thermostat.
2. optical current mutual inductor correction of temperature drift experimental rig as described in claim 1, which is characterized in that the optical current
Mutual inductor correction of temperature drift experimental rig further includes temperature control system, and the temperature control system is connect with the thermostat.
3. optical current mutual inductor correction of temperature drift experimental rig as described in claim 1, which is characterized in that the optical current
Mutual inductor correction of temperature drift experimental rig further includes power control system, and the power control system is connect with the power supply.
4. optical current mutual inductor correction of temperature drift experimental rig as claimed in claim 2, which is characterized in that the thermostat
Temperature parameter include range of temperature, temperature initial value and temperature scanning step-length.
5. optical current mutual inductor correction of temperature drift experimental rig as claimed in claim 3, which is characterized in that the electricity of the power supply
Flowing parameter includes curent change range, electric current initial value and current scanning step-length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820881494.2U CN208239601U (en) | 2018-06-07 | 2018-06-07 | Optical current transformer temperature drift correction test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820881494.2U CN208239601U (en) | 2018-06-07 | 2018-06-07 | Optical current transformer temperature drift correction test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208239601U true CN208239601U (en) | 2018-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820881494.2U Active CN208239601U (en) | 2018-06-07 | 2018-06-07 | Optical current transformer temperature drift correction test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208239601U (en) |
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2018
- 2018-06-07 CN CN201820881494.2U patent/CN208239601U/en active Active
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