CN110018435A - Electronic mutual inductor calibration system and calibration method - Google Patents
Electronic mutual inductor calibration system and calibration method Download PDFInfo
- Publication number
- CN110018435A CN110018435A CN201910128708.8A CN201910128708A CN110018435A CN 110018435 A CN110018435 A CN 110018435A CN 201910128708 A CN201910128708 A CN 201910128708A CN 110018435 A CN110018435 A CN 110018435A
- Authority
- CN
- China
- Prior art keywords
- mutual inductor
- signal
- school
- standard
- circuit
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/02—Testing or calibrating of apparatus covered by the other groups of this subclass of auxiliary devices, e.g. of instrument transformers according to prescribed transformation ratio, phase angle, or wattage rating
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
The invention discloses a kind of electronic mutual inductor calibration system and calibration methods, and without adjusting circuit balancing, process is simple, can satisfy the purpose of multistage DC electronic transformer calibration, improve calibration accuracy.The system includes: high pressure generating apparatus, for generating high-voltage signal, is sequentially output to standard mutual inductor and by the primary side of school electronic mutual inductor；Standard signal sampling apparatus for the secondary side output signal of standard for manual sampling mutual inductor, and is uploaded to data processing platform (DPP)；By school signal sampling device, for sampling the secondary side output signal of tested electronic mutual inductor, and it is uploaded to data processing platform (DPP)；Data processing platform (DPP); for the output data according to the standard mutual inductor received and by the output data of school mutual inductor; processing is compared by the output data of the standard mutual inductor of synchronization and by the output data of school mutual inductor, calculates by the ratio difference and phase difference of school mutual inductor.
Description
Technical field
This disclosure relates to which electronic mutual inductor calibrates field, and in particular to a kind of electronic mutual inductor calibration system and calibration
Method.
Background technique
Along with the continuous development of China's science and technology, current widely applied electronic mutual inductor has obtained many electric power
The favor of user and producer has become its application in terms of relay protection signal source and power system measuring more next
More extensive development trend.
Electronic mutual inductor be a kind of one or more voltage by being connected to Transmission system and two times transfer device or
It is the instrument that current sensor forms together.Electronic mutual inductor is with no magnetic saturation, frequency response range is wide, dynamic characteristic
Good, the features such as insulation system is simple, there is no second open circuit or short-circuit hidden danger, it fundamentally solve mutual inductor electric current,
Generated additive error in voltage signal transmission process is conducive to substation and realizes data sharing, can satisfy higher degree
Automation of transformation substations demand.Electronic mutual inductor is divided into electronic type voltage transformer and two kinds of electronic current mutual inductor.Electronics
Formula mutual inductor output signal is divided into two classes: one kind is analog signal output, and another kind of is digital signal output.
The electronic mutual inductor of calibration output analog signal need to adjust standard since its output is small voltage signal
The output signal of electromagnetic transformer: for current transformer, secondary output is converted into voltage signal by measuring resistance；It is right
In voltage transformer, secondary output is converted into small voltage signal by inductive voltage divider.Calibrate the electronics of output digit signals
Formula mutual inductor, accepted standard device are equally electromagnetic transformers.There are two types of calibration methods: by the output of tested mutual inductor through D/
It is compared after A conversion with standard mutual inductor output；The output of standard mutual inductor is exported after A/D is converted with tested mutual inductor
It is compared.
In R&D process, the discovery prior art has the following problems inventor:
Existing mutual inductor is complex in calibration process, needs many factors collective effect that could complete, passes through
The adjusting of circuit balancing could be completed to verify, this process is extremely complex, the time for needing to spend staff more and essence
Power.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, present disclose provides a kind of electronic mutual inductor calibration system and calibrations
Method, without adjusting circuit balancing, process is simple, can satisfy the purpose of multistage DC electronic transformer calibration, improves
Calibration accuracy.
Technical solution used by the disclosure is:
A kind of electronic mutual inductor calibration system, the system include:
High pressure generating apparatus is sequentially output for generating high-voltage signal to standard mutual inductor and by school electronic mutual inductor
Primary side；
Standard signal sampling apparatus for the secondary side output signal of standard for manual sampling mutual inductor, and is uploaded to data processing
Platform；
By school signal sampling device, for sampling the secondary side output signal of tested electronic mutual inductor, and it is uploaded to number
According to processing platform；
Data processing platform (DPP), for the output data according to the standard mutual inductor received and by the output number of school mutual inductor
According to processing is compared by the output data of the standard mutual inductor of synchronization and by the output data of school mutual inductor, calculates
By the ratio difference and phase difference of school mutual inductor.
Further, the high pressure generating apparatus include input filtering circuit, boost inductance, insulated gate serial module structure,
Diode and the second capacitor, the insulated gate serial module structure include insulated gate device and each institute of driving of multiple series connections
State the driving circuit of insulated gate device work；
Direct-current input power supplying passes through the first end of input filtering circuit connection boost inductance, the second end point of boost inductance
Not Lian Jie the first end of insulated gate serial module structure and the anode of diode, the cathode of the diode connects the first of the capacitor
The second end of end, the second end of the second capacitor and the insulated gate serial module structure is grounded.
Further, the standard signal sampling apparatus includes preposition processing module, ADC sampling module and the first DSP, institute
Preposition processing module is stated to obtain the voltage signal of secondary side output to standard mutual inductor and be filtered it and enhanced processing,
By treated, signal is transferred to ADC sampling module；
First DSP receives the synchronizing clock signals that data processing platform (DPP) is sent by fiber optic receiver, and control ADC samples mould
Standard mutual inductor secondary side is exported letter by what fiber optic transmitter sampled by block standard for manual sampling mutual inductor secondary side output signal
Number it is sent to data processing platform (DPP).
Further, the standard signal sampling apparatus further includes calibration loop, and the calibration loop includes that function is sent
Device, adjustment circuit, power amplification circuit, relay and reference signal input terminal, the sine wave signal that function transmitter generates, one
Road is exported to ADC sampling module, and the other end is inputted after being adjusted circuit, power amplification circuit by relay and reference signal
The reference signal of end input exports after combining to preposition processing module.
Further, described by school signal sampling device includes signal processing circuit, A/D converter, ethernet controller
And fibre-optic transmission system (FOTS)；
The signal processing circuit receives the secondary side output signal of tested electronic mutual inductor and is adjusted for the first time to it
Whole, amplification and two stage filter processing, output to A/D converter；A/D converter is by the two of the tested electronic mutual inductor sampled
Secondary side output signal is converted to digital signal, and is transmitted to ethernet controller；The ethernet controller is transmitted by optical fiber
The secondary side output digit signals of the tested electronic mutual inductor sampled are transmitted to data processing platform (DPP) by system.
Further, the signal processing circuit includes sequentially connected primary sample circuit, relay switch, signal
Grade processing circuit, analog multiplexer, gain amplifying circuit and secondary filter circuit.
Further, described by school signal sampling device further includes the 2nd DSP35, the 2nd DSP35 respectively with relay
Device switch, analog multiplexer, A/D converter, ethernet controller connection, realize to relay switch, analog multiplexer,
A/D converter, ethernet controller control.
Further, the data processing platform (DPP) includes fiber optical transceiver, GPS module, FPGA, clock module and PC machine；
The FPGA obtains clock signal by GPS module, is believed by clock module to standard signal sampling apparatus, by school
Number sampling apparatus sends synchronizing clock signals；The fiber optical transceiver receives the standard mutual inductor of standard signal sampling apparatus output
Output data and the sum that is exported by school signal sampling device by the output data of school mutual inductor, and be sent to FPGA；It is described
FPGA4 is uploaded to PC machine by the output data of the standard mutual inductor received and by the output data of school mutual inductor；The PC machine
It output data to standard mutual inductor and is handled, is calculated by the ratio of school electronic mutual inductor by the output data of school mutual inductor
Difference and phase difference.
A kind of electronic mutual inductor calibration method, method includes the following steps:
Obtain the output data for the standard mutual inductor that synchronization samples and by the output data of school electronic mutual inductor；
The output data of standard mutual inductor is parsed, by the data after parsing multiplied by hollow no-load voltage ratio, creates standard wave
Shape is handled reference waveform using adaptive all-phase DFT algorithm, obtains the virtual value and phase value of standard mutual inductor；
It is parsed to by the output data of school electronic mutual inductor, by the data after parsing multiplied by by school no-load voltage ratio, innovation
Tested waveform, handles tested waveform using adaptive all-phase DFT algorithm, obtains by the effective of school electronic mutual inductor
Value and phase value；
Virtual value and phase value using standard mutual inductor and the virtual value and phase value by school electronic mutual inductor, meter
It calculates by the ratio difference and phase difference of school electronic mutual inductor.
Through the above technical solutions, the beneficial effect of the disclosure is:
(1) for the electronic mutual inductor calibration system of the disclosure without being balanced adjusting to circuit, calibration process is simple, effect
Rate is high；
(2) disclosure is directed to devise calibration system compared with the characteristic of DC electronic transformer and standard mutual inductor,
The purpose that can satisfy multistage DC electronic transformer calibration, improves calibration accuracy, and at low cost, small in size, is suitable for
To the onsite acceptance of DC electronic transformer and verification in Digitized transformation.
Detailed description of the invention
The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown
Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the application.
Fig. 1 is the electronic mutual inductor calibration system structural block diagram according to one or more embodiments；
Fig. 2 is the high pressure generating apparatus structure chart according to one or more embodiments；
Fig. 3 is driving circuit circuit diagram in the insulated gate serial module structure according to one or more embodiments；
Fig. 4 is the standard signal sampling apparatus alignment loop structure block diagram according to one or more embodiments；
Fig. 5 is the signal processing circuit structure block diagram according to one or more embodiments.
Specific embodiment
The disclosure is described further with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the disclosure.Unless another
It indicates, all technical and scientific terms that the disclosure uses have logical with disclosure person of an ordinary skill in the technical field
The identical meanings understood.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
One or more embodiments provide a kind of electronic mutual inductor calibration system, the system include high pressure generating apparatus 1,
Standard signal sampling apparatus 2, by school signal sampling device 3 and data processing platform (DPP) 4, please refer to attached drawing 1.
The high pressure generating apparatus 1 is connect with concatenated standard mutual inductor 5 and by school electronic mutual inductor 6 respectively, is used for
High-voltage signal is provided to standard mutual inductor and by the primary side of school electronic mutual inductor.
The standard signal sampling apparatus 2 is connect with standard mutual inductor 5, and the secondary side for standard for manual sampling mutual inductor exports
Signal.The standard signal sampling apparatus 2 includes preposition processing module, ADC sampling module 24, the first DSP25.
Specifically, the preposition processing module, the voltage signal for the secondary side output to standard mutual inductor is filtered
Wave and enhanced processing, by treated, signal is transferred to ADC sampling module 24.
The ADC sampling module 24, for the standard mutual inductor secondary side output signal after sampling filter and enhanced processing,
It is transferred to the first DSP25.
First DSP25 is connected with fiber optic transmitter and fiber optic receiver, synchronizes for being received by fiber optic receiver
Clock signal controls ADC sampling module standard for manual sampling mutual inductor secondary side output signal, by fiber optic transmitter by standard mutual inductor
The sampled value of device secondary side output signal is sent to data processing platform (DPP) 4.
It is described that light is passed through for sampling the secondary side output signal of tested electronic mutual inductor by school signal sampling device 3
Fibre is transferred to data processing platform (DPP).This includes signal processing circuit 31, A/D converter 32, Ethernet by school signal sampling device 3
Controller 33 and fibre-optic transmission system (FOTS) 34.
Specifically, the signal processing circuit 31, carries out for the secondary side output signal to tested electronic mutual inductor
First adjustment, to the secondary side output signal of tested electronic mutual inductor adjusted amplify and two stage filter processing after,
It exports to A/D converter 32.
The A/D converter 32, for being converted to the secondary side output signal of the tested electronic mutual inductor sampled
Digital signal, and it is transmitted to ethernet controller；
The ethernet controller 33 passes through fibre-optic transmission system (FOTS) 34 for the secondary of the tested electronic mutual inductor sampled
Side output digit signals are transmitted to data processing platform (DPP) 4.
The data processing platform (DPP) 4, for the output data according to the standard mutual inductor received and by school mutual inductor
Processing is compared by the output data of the standard mutual inductor of synchronization and by the output data of school mutual inductor in output data,
It calculates by the ratio difference and phase difference of school mutual inductor.
Attached drawing 2 is please referred to, the high pressure generating apparatus 1 includes input filtering circuit 11, boost inductance L1, insulated gate string
Gang mould block 12, diode D1 and the second capacitor C2, the insulated gate serial module structure 12 include the insulated gate device of multiple series connections
Part and the driving circuit 13 of each insulated gate device work of driving, direct-current input power supplying pass through the input filtering electricity
Road 11 connects the first end of the boost inductance L1, and the second end of the boost inductance L1 is separately connected the insulated gate series connection mould
The anode of the first end of block and the diode D1, the cathode of the diode D1 connect the first end of the second capacitor C2,
The second end of the second capacitor C2 and the second end of the insulated gate serial module structure are grounded.
It should be noted that the number for the insulated gate device being connected in series is determined according to required voltage level.It is described defeated
Entering to hold filter circuit 11 includes first capacitor C1；The first end of the first capacitor connects the direct-current input power supplying, and described the
The second end of one capacitor is grounded.
In at least one embodiment, insulated gate device is IGBT or MOSFET in the insulated gate serial module structure.
Attached drawing 3 is please referred to, driving circuit 13 includes reference signal generator 14, compares and put in the insulated gate serial module structure
Big circuit 15 and feed circuit 16, the input terminal of the reference signal generator 14 are the control signal of the driving circuit,
The reference voltage input terminal of output end amplifying circuit 15 compared with described of the reference signal generator 14 is connected；The feedback
The input terminal of circuit 16 is connected with the collector of the insulated gate device, the comparison letter of output end amplifying circuit 15 compared with described
Number input terminal is connected；The output end of the relatively amplifying circuit 15 is connected with the grid of the insulated gate device.
The high pressure generating apparatus that the present embodiment proposes, insulated gate serial module structure is combined with Boost circuit, is led to
The output that multiple concatenated insulated gate devices realize DC high-voltage is crossed, circuit structure is simple, and efficiency is higher, small in size.
In the present embodiment, the preposition processing module includes sequentially connected filter circuit 21, programmable automation controller
Device 22 and shaping circuit 23, filter filtering that standard mutual inductor secondary side output signal successively passes through, programmable automation controller
After device amplification and shaping circuit processing, sampled by ADC sampling module.
Attached drawing 4 is please referred to, the standard signal sampling apparatus that the present embodiment proposes further includes the calibration loop connecting with DSP
26, the calibration loop 26 includes function transmitter, adjustment circuit, power amplification circuit, relay and reference signal input terminal,
One end of the function transmitter is connect with ADC sampling module, the connection of other end filter circuit.
Calibration loop that the present embodiment proposes is in use, function generator generates the amplitude and phase-adjustable of standard
Sine wave signal；The sinusoidal signal that function generator generates wherein is directly entered ADC sampling module without any adjustment all the way
It is sampled；Another way is adjusted after circuit carries out amplitude and phase adjustment, power amplification circuit to be believed by relay and reference
It number combines, this subsequent road signal enters ADC after filter circuit filtering, programmable gain amplifier amplification and shaping circuit
The two paths of signals used is transmitted to DSP by sampling module, ADC sampling module, DSP analysis compare between this two paths of signals when
Between difference, calculate the inherent delay in signal sampling circuit, the i.e. delay of calibration signal sampling circuit.
In the present embodiment, the adjustment circuit includes resistance series loop and capacitor loop.
Attached drawing 5 is please referred to, above-mentioned signal processing circuit 31 is opened including sequentially connected primary sample circuit, relay
Pass, signal secondary treatment circuit, analog multiplexer, gain amplifying circuit and secondary filter circuit, the primary sample circuit,
Switching relay switch is selected for receiving tested electronic mutual inductor secondary side output signal, and according to the size of input signal
Different signal secondary treatment circuits is switched to enter after signal secondary treatment processing of circuit by analog multiplexer
Gain amplifying circuit carries after secondary filter loop filter, output to A/D sampler.
The present embodiment propose further include the 2nd DSP35 by school signal sampling device 3, the 2nd DSP35 respectively with after
Relay switch, analog-converted are opened in electric switch, analog multiplexer, A/D converter, ethernet controller connection, realization
Pass, A/D converter, ethernet controller control, after the 2nd DSP receives clock sync signal by fiber optic receiver,
It controls A/D converter and samples tested electronic mutual inductor secondary side output signal, while will be adopted by controlling ethernet controller
Sample to tested electronic mutual inductor secondary side output digital data be transmitted to data processing platform (DPP).
It should be noted that the fibre-optic transmission system (FOTS) 34 uses existing IEEE802.3 100base-FX or 10base-
FL type fibre-optic transmission system (FOTS).
Attached drawing 1 is please referred to, the data processing platform (DPP) 4 includes fiber optical transceiver 41, GPS module 43, FPGA44, clock mould
Block 42 and PC machine 45.
Specifically, the fiber optical transceiver 41 is connect with FPGA44, for receiving the mark of standard signal sampling apparatus output
The output data of quasi- mutual inductor and the sum exported by school signal sampling device are sent to by the output data of school mutual inductor
FPGA。
The FPGA44 and PC machine 45 communicate to connect, for by the output data of the standard mutual inductor received and by school it is mutual
The output data of sensor is uploaded to PC machine.
The FPGA44 is connect with GPS module 43, clock module 42 respectively, for obtaining clock signal by GPS module,
Synchronizing clock signals are sent to standard signal sampling apparatus, by school signal sampling device by clock module, realize standard signal
Sampling apparatus, by the synchronized sampling of school signal sampling device.
The PC machine 45, the output data for the standard mutual inductor to synchronization parse, by the number after parsing
According to multiplied by hollow no-load voltage ratio, reference waveform is created, reference waveform is handled using adaptive all-phase DFT algorithm, is marked
The virtual value and phase of quasi- mutual inductor, meanwhile, the output data by school electronic mutual inductor of synchronization is parsed, it will
Data after parsing innovate tested waveform multiplied by by school no-load voltage ratio, using adaptive all-phase DFT algorithm to tested waveform at
Reason is obtained by the virtual value and phase of school electronic mutual inductor, using the virtual value and phase of standard mutual inductor and by school electricity
The virtual value and phase of minor mutual inductor are calculated by the ratio difference and phase difference of school electronic mutual inductor.
The electronic mutual inductor calibration system course of work that the present embodiment proposes are as follows:
High pressure generating apparatus generates high-voltage signal and is sequentially output to standard mutual inductor and by school electronic mutual inductor；
Preposition processing module in standard signal sampling apparatus, the voltage signal for the secondary side output to standard mutual inductor
It is filtered and enhanced processing, it will treated that signal is transferred to ADC sampling module；First DSP is received by fiber optic receiver
After the synchronizing clock signals that data processing platform (DPP) is sent, the standard after controlling ADC sampling module sampling filter and enhanced processing is mutual
Sensor secondary side output signal, and the sampled value of standard mutual inductor secondary side output signal is sent to by number by fiber optic transmitter
According to processing platform；
Meanwhile by signal processing circuit in the signal sampling device of school to the secondary side output signal of tested electronic mutual inductor
It is adjusted for the first time, the secondary side output signal of tested electronic mutual inductor adjusted is amplified and two stage filter is handled
Afterwards, it exports to A/D converter；After 2nd DSP receives the synchronizing clock signals that data processing platform (DPP) is sent by fiber optic receiver,
The secondary side output signal for the tested electronic mutual inductor that control A/D converter samples is converted to data-signal, and is transmitted to
Ethernet controller；Ethernet controller is defeated by the secondary side of the tested electronic mutual inductor sampled by fibre-optic transmission system (FOTS)
Digital data transmission is to data processing platform (DPP) out.
The PC machine of data processing platform (DPP) receives the output data for the standard mutual inductor that synchronization samples and by school electricity
After the output data of minor mutual inductor, the output data of standard mutual inductor is parsed, by the data after parsing multiplied by hollow
No-load voltage ratio is created reference waveform, is handled using adaptive all-phase DFT algorithm reference waveform, obtain standard mutual inductor
Virtual value and phase, meanwhile, it is parsed to by the output data of school electronic mutual inductor, by the data after parsing multiplied by by school
No-load voltage ratio is innovated tested waveform, is handled using adaptive all-phase DFT algorithm tested waveform, obtained mutual by school electronic type
The virtual value and phase of sensor, using the virtual value and phase of standard mutual inductor and by the virtual value of school electronic mutual inductor and
Phase is calculated by the ratio difference and phase difference of school electronic mutual inductor.
The electronic mutual inductor calibration system that the present embodiment proposes, for mutual compared with DC electronic transformer and standard
The characteristic of sensor devises calibration system, can satisfy the purpose of multistage DC electronic transformer calibration, improves calibration essence
Degree, and it is at low cost, it is small in size, to the onsite acceptance of DC electronic transformer and verification suitable for Digitized transformation.
Although above-mentioned be described in conjunction with specific embodiment of the attached drawing to the disclosure, model not is protected to the disclosure
The limitation enclosed, those skilled in the art should understand that, on the basis of the technical solution of the disclosure, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within the protection scope of the disclosure.
Claims (9)
1. a kind of electronic mutual inductor calibration system, characterized in that include:
High pressure generating apparatus is sequentially output for generating high-voltage signal to standard mutual inductor and by the one of school electronic mutual inductor
Secondary side；
Standard signal sampling apparatus for the secondary side output signal of standard for manual sampling mutual inductor, and is uploaded to data processing platform (DPP)；
By school signal sampling device, for sampling the secondary side output signal of tested electronic mutual inductor, and it is uploaded at data
Platform；
Data processing platform (DPP), for according to the output data of standard mutual inductor received and by the output data of school mutual inductor,
Processing is compared by the output data of the standard mutual inductor of synchronization and by the output data of school mutual inductor, calculates by school
The ratio difference and phase difference of mutual inductor.
2. electronic mutual inductor calibration system according to claim 1, characterized in that the high pressure generating apparatus includes defeated
Enter to hold filter circuit, boost inductance, insulated gate serial module structure, diode and the second capacitor, the insulated gate serial module structure includes
The insulated gate device of multiple series connections and the driving circuit of each insulated gate device work of driving；
Direct-current input power supplying passes through the first end of input filtering circuit connection boost inductance, and the second end of boost inductance connects respectively
The first end of insulated gate serial module structure and the anode of diode are connect, the cathode of the diode connects the first end of the capacitor,
The second end of second capacitor and the second end of the insulated gate serial module structure are grounded.
3. electronic mutual inductor calibration system according to claim 1, characterized in that the standard signal sampling apparatus packet
Preposition processing module, ADC sampling module and the first DSP are included, the preposition processing module obtains the secondary side to standard mutual inductor
The voltage signal of output is simultaneously filtered it and enhanced processing, will treated that signal is transferred to ADC sampling module；
First DSP receives the synchronizing clock signals that data processing platform (DPP) is sent by fiber optic receiver, and control ADC sampling module is adopted
Sample standard mutual inductor secondary side output signal is sent out standard mutual inductor secondary side output signal by what fiber optic transmitter sampled
Give data processing platform (DPP).
4. electronic mutual inductor calibration system according to claim 3, characterized in that the standard signal sampling apparatus is also
Including calibration loop, the calibration loop includes function transmitter, adjustment circuit, power amplification circuit, relay and reference letter
Number input terminal, the sine wave signal that function transmitter generates, exports all the way to ADC sampling module, the other end be adjusted circuit,
It exports after being combined by relay with the reference signal that reference signal input terminal inputs after power amplification circuit to preposition processing
Module.
5. electronic mutual inductor calibration system according to claim 1, characterized in that described by school signal sampling device packet
Include signal processing circuit, A/D converter, ethernet controller and fibre-optic transmission system (FOTS)；
The signal processing circuit receives the secondary side output signal of tested electronic mutual inductor and is adjusted, put for the first time to it
The processing of big and two stage filter, output to A/D converter；A/D converter is by the secondary side of the tested electronic mutual inductor sampled
Output signal is converted to digital signal, and is transmitted to ethernet controller；The ethernet controller passes through fibre-optic transmission system (FOTS)
The secondary side output digit signals of the tested electronic mutual inductor sampled are transmitted to data processing platform (DPP).
6. electronic mutual inductor calibration system according to claim 5, characterized in that the signal processing circuit include according to
The primary sample circuit of secondary connection, relay switch, signal secondary treatment circuit, analog multiplexer, gain amplifying circuit and
Secondary filter circuit.
7. electronic mutual inductor calibration system according to claim 6, characterized in that it is described by school signal sampling device also
Including the 2nd DSP35, the 2nd DSP35 is controlled with relay switch, analog multiplexer, A/D converter, Ethernet respectively
Device connection is realized and is controlled relay switch, analog multiplexer, A/D converter, ethernet controller.
8. electronic mutual inductor calibration system according to claim 1, characterized in that the data processing platform (DPP) includes light
Fine transceiver, GPS module, FPGA, clock module and PC machine；
The FPGA obtains clock signal by GPS module, is adopted by clock module to standard signal sampling apparatus, by school signal
Sampling device sends synchronizing clock signals；The fiber optical transceiver receives the defeated of the standard mutual inductor of standard signal sampling apparatus output
Data and the sum exported by school signal sampling device are by the output data of school mutual inductor out, and are sent to FPGA；The FPGA4 will
The output data of the standard mutual inductor received and PC machine is uploaded to by the output data of school mutual inductor；The PC machine is mutual to standard
It the output data of sensor and is handled, is calculated by the ratio difference and phase of school electronic mutual inductor by the output data of school mutual inductor
Difference.
9. a kind of electronic mutual inductor calibration method, characterized in that method includes the following steps:
Obtain the output data for the standard mutual inductor that synchronization samples and by the output data of school electronic mutual inductor；
The output data of standard mutual inductor is parsed, by the data after parsing multiplied by hollow no-load voltage ratio, reference waveform is created, adopts
Reference waveform is handled with adaptive all-phase DFT algorithm, obtains the virtual value and phase value of standard mutual inductor；
It is parsed to by the output data of school electronic mutual inductor, by the data after parsing multiplied by by school no-load voltage ratio, innovation is tested
Waveform is handled tested waveform using adaptive all-phase DFT algorithm, obtain by the virtual value of school electronic mutual inductor and
Phase value；
Virtual value and phase value using standard mutual inductor and the virtual value and phase value by school electronic mutual inductor calculate quilt
The ratio difference and phase difference of school electronic mutual inductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910128708.8A CN110018435A (en) | 2019-02-21 | 2019-02-21 | Electronic mutual inductor calibration system and calibration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910128708.8A CN110018435A (en) | 2019-02-21 | 2019-02-21 | Electronic mutual inductor calibration system and calibration method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110018435A true CN110018435A (en) | 2019-07-16 |
Family
ID=67189112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910128708.8A Pending CN110018435A (en) | 2019-02-21 | 2019-02-21 | Electronic mutual inductor calibration system and calibration method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110018435A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958071A (en) * | 2019-10-30 | 2020-04-03 | 中国电力科学研究院有限公司 | Electronic transformer clock error self-calibration system and method based on 4G module |
| CN111580033A (en) * | 2020-06-24 | 2020-08-25 | 中国航空工业集团公司北京长城计量测试技术研究所 | Method for calibrating phase difference in dynamic calibration process |
| CN111722172A (en) * | 2020-06-16 | 2020-09-29 | 浙江工业职业技术学院 | Novel alternating current transformer online detection device and method |
| CN112327237A (en) * | 2020-11-17 | 2021-02-05 | 国网四川省电力公司电力科学研究院 | Error calibration system and method for broadband wide-range current transformer |
| CN114062752A (en) * | 2021-11-18 | 2022-02-18 | 浙江天正电气股份有限公司 | Mutual inductor processing method and consistency implementation method of mutual inductor and metering core |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545939A (en) * | 2009-04-28 | 2009-09-30 | 江苏省电力试验研究院有限公司 | System for verifying transient characteristics of electronic transformer compatible with IEC61850 protocol |
| CN101604009A (en) * | 2009-07-22 | 2009-12-16 | 天津市电力公司 | Method for verifying universal electronic type mutual inductor |
| CN101655544A (en) * | 2008-08-20 | 2010-02-24 | 武汉华瑞测控科技有限公司 | Device for measuring and checking errors of digital mutual inductor |
| CN201589856U (en) * | 2009-12-11 | 2010-09-22 | 南京南瑞继保电气有限公司 | Precision checking instrument for electronic transformer |
| CN102073029A (en) * | 2011-02-16 | 2011-05-25 | 安徽省电力公司合肥供电公司 | Electronic mutual inductor test system and test method |
| CN102096061A (en) * | 2010-12-03 | 2011-06-15 | 华北电力科学研究院有限责任公司 | Measuring range self-adaption calibrating device for electronic type mutual inductor |
| CN102621514A (en) * | 2012-03-31 | 2012-08-01 | 哈尔滨工业大学 | Electronic transformer verifying device |
| CN202583928U (en) * | 2012-03-19 | 2012-12-05 | 深圳青铜剑电力电子科技有限公司 | Direct-current high voltage generating circuit for direct-current high voltage tester |
| CN103630866A (en) * | 2013-09-09 | 2014-03-12 | 国家电网公司 | Transient characteristic detection system and transient characteristic detection method for electronic voltage transformers |
| CN106872927A (en) * | 2017-02-16 | 2017-06-20 | 中国电力科学研究院 | The assay method and error analysis method of the harmonic wave degree of accuracy of electronic type voltage transformer |
-
2019
- 2019-02-21 CN CN201910128708.8A patent/CN110018435A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655544A (en) * | 2008-08-20 | 2010-02-24 | 武汉华瑞测控科技有限公司 | Device for measuring and checking errors of digital mutual inductor |
| CN101545939A (en) * | 2009-04-28 | 2009-09-30 | 江苏省电力试验研究院有限公司 | System for verifying transient characteristics of electronic transformer compatible with IEC61850 protocol |
| CN101604009A (en) * | 2009-07-22 | 2009-12-16 | 天津市电力公司 | Method for verifying universal electronic type mutual inductor |
| CN201589856U (en) * | 2009-12-11 | 2010-09-22 | 南京南瑞继保电气有限公司 | Precision checking instrument for electronic transformer |
| CN102096061A (en) * | 2010-12-03 | 2011-06-15 | 华北电力科学研究院有限责任公司 | Measuring range self-adaption calibrating device for electronic type mutual inductor |
| CN102073029A (en) * | 2011-02-16 | 2011-05-25 | 安徽省电力公司合肥供电公司 | Electronic mutual inductor test system and test method |
| CN202583928U (en) * | 2012-03-19 | 2012-12-05 | 深圳青铜剑电力电子科技有限公司 | Direct-current high voltage generating circuit for direct-current high voltage tester |
| CN102621514A (en) * | 2012-03-31 | 2012-08-01 | 哈尔滨工业大学 | Electronic transformer verifying device |
| CN103630866A (en) * | 2013-09-09 | 2014-03-12 | 国家电网公司 | Transient characteristic detection system and transient characteristic detection method for electronic voltage transformers |
| CN106872927A (en) * | 2017-02-16 | 2017-06-20 | 中国电力科学研究院 | The assay method and error analysis method of the harmonic wave degree of accuracy of electronic type voltage transformer |
Non-Patent Citations (2)
| Title |
|---|
| 冯凌 等: "一种电子式互感器误差校验装置的设计", 《计量与测试技术》 * |
| 李伟等: "220ｋＶ电子式电压互感器带电校验***研究", 《电测与仪表》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110958071A (en) * | 2019-10-30 | 2020-04-03 | 中国电力科学研究院有限公司 | Electronic transformer clock error self-calibration system and method based on 4G module |
| CN111722172A (en) * | 2020-06-16 | 2020-09-29 | 浙江工业职业技术学院 | Novel alternating current transformer online detection device and method |
| CN111580033A (en) * | 2020-06-24 | 2020-08-25 | 中国航空工业集团公司北京长城计量测试技术研究所 | Method for calibrating phase difference in dynamic calibration process |
| CN111580033B (en) * | 2020-06-24 | 2022-09-20 | 中国航空工业集团公司北京长城计量测试技术研究所 | Method for calibrating phase difference in dynamic calibration process |
| CN112327237A (en) * | 2020-11-17 | 2021-02-05 | 国网四川省电力公司电力科学研究院 | Error calibration system and method for broadband wide-range current transformer |
| CN114062752A (en) * | 2021-11-18 | 2022-02-18 | 浙江天正电气股份有限公司 | Mutual inductor processing method and consistency implementation method of mutual inductor and metering core |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110018435A (en) | Electronic mutual inductor calibration system and calibration method | |
| CN104991221B (en) | The device and detection method calibrated to the metering device in distributed transformer substation | |
| CN110426667A (en) | A kind of system and method for all-fiber current transformator progress wideband verification | |
| CN106841813B (en) | Measure the device and method of magnetic resonance type wireless charging system transmitting terminal input impedance | |
| CN109444541A (en) | Transless couples pouring-in wide-band impedance measuring device and its control method | |
| CN203535208U (en) | Verification circuit and verification apparatus for digital electric energy meter calibration instrument | |
| CN109085422B (en) | High-precision synchronous acquisition system and method for monomer current of parallel power battery pack | |
| CN205067713U (en) | Flexible alternating current -direct current electronic transformer calibration equipment based on mix sampling | |
| CN106873043B (en) | A kind of shallow earth's surface magnetic source transmitter and its control method of double-loop feedbackc | |
| CN105162356A (en) | Voltage phase adjustable full-bridge resonant ultrasonic driving circuit easy to connected in parallel | |
| CN114966316A (en) | Primary and secondary depth fusion equipment signal detection device and detection method | |
| CN209296902U (en) | A kind of source of high frequency current | |
| CN104698274B (en) | A kind of spectrum analyzer with local oscillator calibration function | |
| CN110429590A (en) | A kind of harmonic wave analog control method suitable for power grid analog power | |
| CN102955486B (en) | High-voltage large-power frequency conversion adjustable constant voltage source | |
| CN102436995B (en) | Hall high voltage detection control method applied to traveling wave tube program control high voltage power supply | |
| CN106125033B (en) | A kind of voltage and current synchronism classification error testing system | |
| CN108322031A (en) | A kind of system and method in three-phase alternating current adjustable signal source | |
| CN111404580A (en) | OFDM-based DC/DC converter power line power signal composite transmission system and transmission method | |
| CN206945766U (en) | A kind of high current occurring source master device, from apparatus and system | |
| CN106209272A (en) | A kind of based on double detection LTE signal level closed-loop control devices and method | |
| CN110442177A (en) | A kind of power control system | |
| CN102565583A (en) | Power quality monitoring terminal for switch-in electronic mutual inductor | |
| CN201788275U (en) | Analog sampling and protocol generating device | |
| CN113533838A (en) | Wiring harness comprehensive test system and method based on FPGA |
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 |
Application publication date: 20190716 |
|
| RJ01 | Rejection of invention patent application after publication |