CN109884564A - A kind of magnetic core of transformer magnetic characteristic measurement method and device - Google Patents
A kind of magnetic core of transformer magnetic characteristic measurement method and device Download PDFInfo
- Publication number
- CN109884564A CN109884564A CN201910220153.XA CN201910220153A CN109884564A CN 109884564 A CN109884564 A CN 109884564A CN 201910220153 A CN201910220153 A CN 201910220153A CN 109884564 A CN109884564 A CN 109884564A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- flux density
- magnetic flux
- saturation
- core
- 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.)
- Granted
Links
Landscapes
- Measuring Magnetic Variables (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a kind of magnetic core of transformer magnetic characteristic measurement method and devices, comprising: actual measurement toroidal core is reaching the hysteresis loop H-B in depth saturation process；Hysteresis loop H-B based on actual measurement, determines the optimal value of J-A aspect of model parameter, obtains the hysteresis loop H-B ' based on J-A model；The approach to saturation magnetic flux density of section of magnetic core is modified, transition hysteresis loop H-B " is obtained；Using the section that approaches to saturation of transition hysteresis loop H-B ", the section that approaches to saturation of the hysteresis loop H-B ' based on J-A model is modified；The magnetic field strength of measuring transformer magnetic core under operation determines the magnetic flux density under current state according to modified hysteresis loop.Magnetic characteristic measurement method proposed by the present invention is modified the approach to saturation magnetic flux density of section of magnetic core, so that error of the J-A mould when describing magnetic core and approaching to saturation greatly reduces, overcome the defect of J-A model itself, improve accuracy when J-A model describes magnetic core magnetic characteristic, calculating process is simple, strong operability.
Description
Technical field
The invention belongs to magnetic core of transformer technical fields, more particularly, to a kind of magnetic core of transformer magnetic characteristic measurement side
Method and device.
Background technique
In the power system, containing there are many ferromagnetic element, such as power transformer and mutual inductor, in order to more accurately describe
Their working characteristics needs to carry out their equivalent model carry out precise expression, and then guarantees the peace of Operation of Electric Systems
Full property and reliability.Magnetic core is the core component of ferromagnetic element, and the key of equivalent model statement is the object of magnetic core magnetic history
Description in terms of reason and mathematics.
The hysteresis loop of magnetic core is the important characterization of magnetic core magnetic characteristic, by hysteresis loop, the magnetic conductance of available magnetic core
The important magnetic parameter such as rate, remanent magnetization, coercivity.At present there are many model of description magnetic core magnetic characteristic, macroscopic view can be divided into
Magnetization model, half macroscopic magnetization model and microcosmic magnetization model.Although macroscopic magnetization model to the fitting effect of hysteresis loop compared with
It is good, but lack the description to physical mechanism；Microcosmic magnetization model considers the physical mechanism of magnetic history comprehensively, but calculates
In complexity, it is not suitable for engineering reality.Domain wall of the J-A model based on ferromagnetic material is theoretical, by the micro-variations in magnetic history
Comprehensively considered with macro manifestations, physical interpretation more meets the magnetic history of magnetic core, and mathematical expression form is more simple
It is single, have the advantages that explicit physical meaning and calculating process are easy, is widely used in magnetic core magnetization modeling field.
Since J-A model only considers the physical process within the scope of middle downfield, i.e. domain wall replaces process and domain wall bending
Process does not account for magnetic core and approaches to saturation in section the rotation process of magnetic moment in magnetic domain, in the section that approaches to saturation of description hysteresis loop
When can generate biggish error, therefore, using J-A model magnetic core of transformer magnetic characteristic is described when, be unable to accurate description transformation
The variation of device magnetic core magnetic characteristic causes occur deviation to the analysis of running state of transformer, and then influences the safety fortune of transformer
Row, even results in the damage of transformer.
Summary of the invention
In view of the drawbacks of the prior art, the purpose of the present invention is to provide a kind of magnetic core of transformer magnetic characteristic measurement method and
Device, it is intended to which when solving to describe magnetic core of transformer magnetic characteristic using J-A model, approaching to saturation in magnetic core, section accuracy is lower to be asked
Topic.
To achieve the above object, one aspect of the present invention provides a kind of magnetic core of transformer magnetic characteristic measurement method, comprising:
(1) measure annular magnetic core is reaching magnetic field strength H and magnetic flux density B in depth saturation process；
(2) according to actual measurement magnetic field strength H and magnetic flux density B, the optimal value of J-A aspect of model parameter is obtained；The feature
Parameter includes: saturation magnetization Ms, hysteresis loss coefficient k, the magnetic domain coefficient of coup α, reversible degree factor c and form parameter a；
(3) according to the optimal value of J-A aspect of model parameter and the actual measurement magnetic field strength H, prediction magnetic flux density B ' is obtained；
(4) it approaches to saturation section in the toroidal core, the prediction magnetic flux density B ' is modified, obtain compensation magnetic flux
Density B "；
(5) magnetic field strength of measuring transformer magnetic core under operation, in the non-section that approaches to saturation of magnetic core, according to described pre-
It surveys magnetic flux density B ' and surveys the relationship of magnetic field strength H, determine the magnetic flux density under current operating conditions；It approaches to saturation in magnetic core
Section determines the magnetic flux density under current operating conditions according to the relationship of the compensation magnetic flux density B " and actual measurement magnetic field strength H.
Further, in the step (3), the method for obtaining prediction magnetic flux density B ' are as follows:
(31) anhysteretic intensity M is obtainedan:
(32) according to the anhysteretic intensity Man, obtain prediction magnetization M:
Wherein, δ is direction coefficient, as dH/dt > 0, δ=1；As dH/dt < 0, δ=- 1, δMFor modifying factor, work as δ
(Man- M) < 0 when, δM=0；As δ (Man- M) > 0 when, δM=1；
(33) according to the prediction magnetization M and actual measurement magnetic field strength H, prediction magnetic flux density B ' is obtained:
B '=μ0(H+M)
Wherein, μ0For space permeability, μ0=4 π × 10-7N/A2。
Further, described that the prediction magnetic flux density B ' is modified in the step (4), obtain compensation magnetic flux
The method of density B " are as follows:
Consider that magnetic core approaches to saturation in section the rotation process of magnetic moment in magnetic domain, so approaching to saturation section prediction magnetization in magnetic core
Intensity M is small compared with actual value, utilizes the anhysteretic intensity ManPractical magnetic is characterized with the weighted value of the prediction magnetization M
Change intensity, the compensation magnetic flux density B " is indicated are as follows:
B "=μ0(H+p1Man+p2M)
Wherein, p1、p2For undetermined coefficient, value should make the compensation magnetic flux density B " and the actual measurement magnetic flux density B exist
Magnetic core approaches to saturation a section error minimum.
Preferably, p1It is 0.32, p2It is 0.60.
Further, the toroidal core approaches to saturation section are as follows: magnetic flux density is survey magnetic flux density B maximum value 0.3
Again to 0.95 times of corresponding magnetic field strength section；
Further, the non-section that approaches to saturation of the magnetic core are as follows: the magnetic core approaches to saturation section other than section.
Further, the magnetic core of transformer is identical as the toroidal core material.
Another aspect of the present invention provides a kind of magnetic core of transformer magnetic characteristic measuring device, comprising: J-A model calibration mould
Block, magnetic flux density prediction module, magnetic flux density correction module and magnetic core of transformer magnetic characteristic obtain module；
The J-A model calibration module is used for measure annular magnetic core magnetic field strength H and magnetic flux density B, and according to measuring
The magnetic field strength and magnetic flux density relationship arrived obtains J-A aspect of model parameter optimal value；
The magnetic flux density prediction module, for strong according to the optimal value of the J-A aspect of model parameter and actual measurement magnetic field
H is spent, prediction magnetic flux density B ' is obtained；
The magnetic flux density correction module, for approaching to saturation section in the toroidal core, to the prediction magnetic flux density
B ' is modified, and obtains compensation magnetic flux density B "；
The magnetic core of transformer magnetic characteristic obtains module, strong for the magnetic field of measuring transformer magnetic core under operation
Degree determines current fortune according to the relationship of the prediction magnetic flux density B ' and actual measurement magnetic field strength H in the non-section that approaches to saturation of magnetic core
Magnetic flux density under row state；It approaches to saturation section in magnetic core, according to the compensation magnetic flux density B " and surveys the pass of magnetic field strength H
System, determines the magnetic flux density under current operating conditions.
Contemplated above technical scheme through the invention, compared with prior art, can obtain it is following the utility model has the advantages that
(1) magnetic core of transformer magnetic characteristic measurement method proposed by the present invention considers when magnetic core approaches to saturation magnetic moment in magnetic domain
Rotation process, the approach to saturation magnetic flux density of section of magnetic core is modified, so that J-A mould is when describing magnetic core and approaching to saturation
Error greatly reduces, and overcomes the defect of J-A model itself, improves accuracy when J-A model describes magnetic core magnetic characteristic.
(2) present invention uses order-1 linear equation, is modified to magnetic flux density, calculating process is simple, strong operability.
Detailed description of the invention
Fig. 1 is a kind of magnetic core of transformer magnetic characteristic measuring method flow chart provided in an embodiment of the present invention；
Fig. 2 is the hysteresis loop H-B ' and transition hysteresis loop H-B " for surveying hysteresis loop H-B, being obtained based on J-A model
Schematic diagram；
Fig. 3 is to survey the magnetic hysteresis obtained after hysteresis loop H-B, the hysteresis loop H-B ' obtained based on J-A model and amendment
Loop line schematic diagram.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
With reference to Fig. 1, the embodiment of the invention provides a kind of magnetic core of transformer magnetic characteristic measurement methods, comprising:
Step 1: measure annular magnetic core is reaching magnetic field strength H and magnetic flux density B in depth saturation process, is surveyed
Hysteresis loop H-B；
Specifically, using the toroidal core of Ferrite Material, the winding that winding turn ratio is 5:5 in the two sides of magnetic core,
Primary side applies the sinusoidal voltage that frequency is 1kHz, adjusts voltage magnitude, so that magnetic core is reached depth saturation, is surveyed by current probe
Measure the electric current of primary side；Secondary side is opened a way, the open-circuit voltage of secondary side is measured by voltage probe, is based on Ampère circuital theorem
And Faraday's electromagnetic induction law, the hysteresis loop of actual measurement is calculated, as shown in phantom in Figure 2.
Wherein, for toroidal core, Ampère circuital theorem, the calculation formula of magnetic field strength H are based on are as follows:
Wherein, N1For first side winding the number of turns, i (t) is primary side current, d0For magnetic core outer diameter, diFor magnetic core internal diameter；
Based on Faraday's electromagnetic induction law, the calculation formula of magnetic flux density B are as follows:
Wherein, u (t) is secondary side voltage, N2For secondary side winding the number of turns, h is magnetic core height, and η is the lamination system of magnetic core
Number.
Step 2: determining the optimal value of J-A aspect of model parameter, make the hysteresis loop obtained using J-A model and measure
The hysteresis loop error arrived is minimum；The characteristic parameter includes: saturation magnetization Ms, hysteresis loss coefficient k, magnetic domain coupled systemes
Number α, reversible degree factor c and form parameter a.
Specifically, the characteristic parameter of J-A model is determined using particle swarm optimization algorithm, the step of particle swarm optimization algorithm wraps
It includes: the position of each particle in random initializtion population；The fitness of current each particle is calculated and compares, fitness is optimal
Desired positions of the position of individual as population, the desired positions of current particle group are the update provider of the position of each particle
To；Update the position of each particle；It repeats the above steps, until the number of iterations reaches setting value.
In the present embodiment, the number of iterations is set as 1000 times, and the J-A model obtained according to above-mentioned particle swarm optimization algorithm is special
The optimal value of sign parameter is respectively as follows: Ms=6.92 × 105A/m, k=2.03A/m, c=0.40, a=3.86A/m, α=9.03 ×
10-6。
Step 3: the magnetic field strength H of optimal value and actual measurement based on J-A aspect of model parameter obtains prediction magnetic flux density
B ' obtains the hysteresis loop H-B ' based on J-A model；
Specifically, anhysteretic intensity M is calculated using formula (1)an, anhysteretic intensity characterize in the ideal case,
The magnetic history of magnetic core when not having a magnetic hystersis loss solves the prediction intensity of magnetization for assisting.
Prediction magnetization M is calculated using formula (2), solves prediction magnetic flux density for assisting.Formula (2) is magnetic susceptibility table
Up to formula, the intensity of magnetization is characterized with the change rate of magnetic field strength:
Wherein, δ is direction coefficient, as dH/dt > 0, δ=1；As dH/dt < 0, δ=- 1, δMFor modifying factor, work as δ
(Man- M) < 0 when, δM=0；As δ (Man- M) > 0 when, δM=1；
Prediction magnetic flux density B ' is calculated by formula (3), the hysteresis loop H-B ' based on J-A model is obtained, such as solid line in Fig. 2
It is shown；
B '=μ0(H+M) (3)
Wherein, μ0For space permeability, μ0=4 π × 10-7N/A2。
Step 4: approaching to saturation section in toroidal core, prediction magnetic flux density B ' is modified, obtain compensation magnetic flux density
B " obtains transition hysteresis loop H-B "；
Specifically, magnetic core is not accounted for based on J-A model to approach to saturation in section the rotation process of magnetic moment in magnetic domain, and magnetic domain
The rotation process of interior magnetic moment is approximately reversible process, so prediction magnetization M is small compared with actual value in the section that approaches to saturation, is based on
Above-mentioned consideration utilizes anhysteretic intensity ManThe practical intensity of magnetization is characterized with the weighted value of prediction magnetization M, magnetic will be compensated
Flux density B " is indicated are as follows:
B "=μ0(H+p1Man+p2M) (4)
Wherein, p1、p2For undetermined coefficient, value should make the compensation magnetic flux density B " and the actual measurement magnetic flux density B exist
Magnetic core approaches to saturation a section error minimum, in the present embodiment, p1=0.32, p2=0.60, the M that will be calculated in step (3)an、M
Substitution formula (4) obtains transition hysteresis loop H-B ", as shown in dotted lines in Fig. 2.
Step 5: being greater than 0 part in magnetic field strength, choose the section that approaches to saturation of the hysteresis loop H-B ' based on J-A model
Starting point A and terminal D chooses the starting point B and terminal C of the section that approaches to saturation of transition hysteresis loop H-B ", and A, B point are connected, and will
C, D point connects, and completes the amendment that magnetic field strength is greater than 0 some hysteresis loop line；
Specifically, since compared with the hysteresis loop H-B of actual measurement, the approach of the hysteresis loop H-B ' based on J-A model is full
Larger with section error, section error that approaches to saturation of transition hysteresis loop H-B " is smaller, and therefore, it is necessary to will be based on the magnetic of J-A model
The non-section that approaches to saturation of hysteresis curves H-B ' is connect with the section that approaches to saturation of transition hysteresis loop H-B ".It chooses based on J-A model
Hysteresis loop H-B ' goes up magnetic field strength greater than 0 part, the starting point A and terminal D of the section that approaches to saturation, and chooses transition hysteresis loop H-
B " goes up magnetic field strength greater than 0 part, and the starting point B and terminal C of the section that approaches to saturation connect A, B point, and the connection of C, D point is corrected
Hysteresis loop；Wherein, magnetic field strength is greater than 0 part, and the hysteresis loop H-B ' of the J-A model section that above approaches to saturation refers to: magnetic flux
Density B ' is 0.3 times to 0.95 times of section for surveying peakflux density in hysteresis loop H-B；On transition hysteresis loop H-B "
The section that approaches to saturation refers to: magnetic flux density B " is 0.5 times to 0.9 times of section for surveying peakflux density in hysteresis loop H-B.
Step 6: in magnetic field strength less than 0 part, choosing the section that approaches to saturation of the hysteresis loop H-B ' based on J-A model
Starting point E and terminal K chooses the starting point F and terminal G of the section that approaches to saturation of transition hysteresis loop H-B ", E, F point is connected, G, H point
Amendment of the magnetic field strength less than 0 some hysteresis loop line is completed in connection；
Specifically, in magnetic field strength less than 0 part, chooses the hysteresis loop H-B ' based on J-A model and above approach to saturation section
Starting point E and terminal K, and choose the starting point F and terminal G for the section that approaches to saturation on transition hysteresis loop H-B ", E, F point connected,
G, H point connects, and obtains modified hysteresis loop.
Wherein, magnetic field strength is less than 0 part, and the hysteresis loop H-B ' of the J-A model section that above approaches to saturation refers to: magnetic flux density
B ' is 0.3 times to 0.95 times of section for surveying negative sense peakflux density in hysteresis loop H-B；On transition hysteresis loop H-B "
The section that approaches to saturation refers to: magnetic flux density B " is 0.5 times to 0.9 times for surveying negative sense peakflux density in hysteresis loop H-B
Section.
J-A model is describing to generate large error when hysteresis loop approaches to saturation section it can be seen from such as Fig. 3, by repairing
After just, error of the J-A model when describing hysteresis loop and approaching to saturation section is greatly reduced.
Step 7: the magnetic field strength of measuring transformer magnetic core under operation, in the non-section that approaches to saturation of magnetic core, according to institute
It states prediction magnetic flux density B ' and surveys the relationship of magnetic field strength H, determine the magnetic flux density under current operating conditions；It is approached in magnetic core
It is saturated section, according to the relationship of the compensation magnetic flux density B " and actual measurement magnetic field strength H, determines that the magnetic flux under current operating conditions is close
Degree.
On the other hand the embodiment of the present invention provides a kind of magnetic core of transformer magnetic characteristic measuring device, comprising: J-A model mark
Cover half block, magnetic flux density prediction module, magnetic flux density correction module and magnetic core of transformer magnetic characteristic obtain module；
J-A model calibration module is used for measure annular magnetic core magnetic field strength H and magnetic flux density B, and obtained according to measurement
Magnetic field strength and magnetic flux density relationship obtain J-A aspect of model parameter optimal value；
Magnetic flux density prediction module, for according to the optimal value of the J-A aspect of model parameter and actual measurement magnetic field strength H,
Obtain prediction magnetic flux density B '；
Magnetic flux density correction module, for approaching to saturation section in the toroidal core, to the prediction magnetic flux density B ' into
Row amendment obtains compensation magnetic flux density B "；
Magnetic core of transformer magnetic characteristic obtains module, for the magnetic field strength of measuring transformer magnetic core under operation,
The non-section that approaches to saturation of magnetic core determines current operating conditions according to the relationship of the prediction magnetic flux density B ' and actual measurement magnetic field strength H
Under magnetic flux density；It approaches to saturation section in magnetic core, according to the compensation magnetic flux density B " and surveys the relationship of magnetic field strength H, really
Determine the magnetic flux density under current operating conditions.
In embodiments of the present invention, each module specific implementation can be with reference to retouching in above-mentioned corresponding method embodiment
It states, the embodiment of the present invention will be repeated no longer.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (7)
1. a kind of magnetic core of transformer magnetic characteristic measurement method characterized by comprising
(1) measure annular magnetic core is reaching magnetic field strength H and magnetic flux density B in depth saturation process；
(2) according to actual measurement magnetic field strength H and magnetic flux density B, the optimal value of J-A aspect of model parameter is obtained；The characteristic parameter
It include: saturation magnetization Ms, hysteresis loss coefficient k, the magnetic domain coefficient of coup α, reversible degree factor c and form parameter a；
(3) according to the optimal value of the J-A aspect of model parameter and the actual measurement magnetic field strength H, prediction magnetic flux density B ' is obtained；
(4) it approaches to saturation section in the toroidal core, the prediction magnetic flux density B ' is modified, obtain compensation magnetic flux density
B″；
(5) magnetic field strength of measuring transformer magnetic core under operation, in the non-section that approaches to saturation of magnetic core, according to the prediction magnetic
The relationship of flux density B ' and actual measurement magnetic field strength H, determine the magnetic flux density under current operating conditions；It approaches to saturation section in magnetic core,
According to the relationship of the compensation magnetic flux density B " and actual measurement magnetic field strength H, the magnetic flux density under current operating conditions is determined.
2. a kind of magnetic core of transformer magnetic characteristic measurement method according to claim 1, which is characterized in that the step (3)
In, the method for obtaining prediction magnetic flux density B ' are as follows:
Obtain anhysteretic intensity Man；
According to the anhysteretic intensity Man, obtain prediction magnetization M；
According to the prediction magnetization M and the actual measurement magnetic field strength H, prediction magnetic flux density B ' is obtained.
3. a kind of magnetic core of transformer magnetic characteristic measurement method according to claim 1, which is characterized in that the step (4)
In, described that the prediction magnetic flux density B ' is modified, the method for obtaining compensation magnetic flux density B " are as follows:
Consider that magnetic core approaches to saturation in section the rotation process of magnetic moment in magnetic domain, utilizes the anhysteretic intensity ManWith it is described pre-
The weighted value for surveying magnetization M characterizes the practical intensity of magnetization, and the compensation magnetic flux density B " is indicated are as follows:
B "=μ0(H+p1Man+p2M)
Wherein, p1、p2For undetermined coefficient, value should make the compensation magnetic flux density B " and the actual measurement magnetic flux density B in magnetic core
Approach to saturation a section error minimum.
4. a kind of magnetic core of transformer magnetic characteristic measurement method according to claim 3, which is characterized in that the undetermined coefficient
p1It is 0.32, p2It is 0.60.
5. a kind of magnetic core of transformer magnetic characteristic measurement method according to claim 1, which is characterized in that the step (5)
Described in toroidal core approach to saturation section are as follows: magnetic flux density be survey 0.3 times to 0.95 times of magnetic flux density B maximum value it is corresponding
Magnetic field strength section；The non-section that approaches to saturation of the magnetic core are as follows: the magnetic core approaches to saturation section other than section.
6. according to claim 1 or a kind of 5 described in any item magnetic core of transformer magnetic characteristic measurement methods, which is characterized in that institute
It is identical as the toroidal core material to state magnetic core of transformer.
7. a kind of magnetic core of transformer magnetic characteristic measuring device characterized by comprising J-A model calibration module, magnetic flux density are pre-
It surveys module, magnetic flux density correction module and magnetic core of transformer magnetic characteristic and obtains module；
The J-A model calibration module is used for measure annular magnetic core magnetic field strength H and magnetic flux density B, and obtained according to measurement
Magnetic field strength and magnetic flux density relationship obtain J-A aspect of model parameter optimal value；
The magnetic flux density prediction module, for according to the optimal value of the J-A aspect of model parameter and actual measurement magnetic field strength H,
Obtain prediction magnetic flux density B '；
The magnetic flux density correction module, for approaching to saturation section in the toroidal core, to the prediction magnetic flux density B ' into
Row amendment obtains compensation magnetic flux density B "；
The magnetic core of transformer magnetic characteristic obtains module, for the magnetic field strength of measuring transformer magnetic core under operation,
The non-section that approaches to saturation of magnetic core determines current operating conditions according to the relationship of the prediction magnetic flux density B ' and actual measurement magnetic field strength H
Under magnetic flux density；It approaches to saturation section in magnetic core, according to the compensation magnetic flux density B " and surveys the relationship of magnetic field strength H, really
Determine the magnetic flux density under current operating conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220153.XA CN109884564B (en) | 2019-03-22 | 2019-03-22 | Method and device for measuring magnetic characteristics of transformer magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910220153.XA CN109884564B (en) | 2019-03-22 | 2019-03-22 | Method and device for measuring magnetic characteristics of transformer magnetic core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109884564A true CN109884564A (en) | 2019-06-14 |
| CN109884564B CN109884564B (en) | 2020-02-14 |
Family
ID=66933595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910220153.XA Active CN109884564B (en) | 2019-03-22 | 2019-03-22 | Method and device for measuring magnetic characteristics of transformer magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109884564B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111556643A (en) * | 2020-05-09 | 2020-08-18 | 清华大学 | Magnetic field generation method and synchrotron |
| CN112083362A (en) * | 2020-09-10 | 2020-12-15 | 华北电力大学 | Electrical steel sheet hysteresis characteristic prediction method and system based on reversible magnetization component |
| CN113933600A (en) * | 2021-10-19 | 2022-01-14 | 北京智芯仿真科技有限公司 | Magnetic core loss determination method and device for current saturation distortion of integrated circuit |
| CN113933599A (en) * | 2021-10-19 | 2022-01-14 | 北京智芯仿真科技有限公司 | Magnetic core loss determination method and device for current cut-off distortion of integrated circuit |
| CN114089013A (en) * | 2022-01-21 | 2022-02-25 | 华中科技大学 | Zero offset suppression method based on magnetization micro-asymmetric magnetic core group mirror image matching |
| CN114236433A (en) * | 2021-11-23 | 2022-03-25 | 浙江大学 | Ferromagnetic material magnetic induction intensity online estimation method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200055A (en) * | 2014-09-26 | 2014-12-10 | 国家电网公司 | Excitation inrush current simulation method and device for ultra-high voltage transformer under condition of no-load closing |
| CN104991994A (en) * | 2015-06-09 | 2015-10-21 | 国网天津市电力公司 | Transformer field current simulation method based on J-A magnetic hysteresis model |
| CN107103163A (en) * | 2017-05-26 | 2017-08-29 | 华中科技大学 | A kind of method that current transformer J A simulation models are determined based on Physical Experiment |
| JP2017187346A (en) * | 2016-04-04 | 2017-10-12 | 新日鐵住金株式会社 | Bh curve preparation device, electromagnetic analysis device, bh curve preparation method, and computer program |
| CN107609298A (en) * | 2017-09-26 | 2018-01-19 | 广东电网有限责任公司电力科学研究院 | A kind of Jiles Atherton model parameter identification methods and device |
| CN108460220A (en) * | 2018-03-16 | 2018-08-28 | 浙江大学 | A kind of prediction technique of the dynamic hystersis loop based on improved Jiles-Atherton models |
| US20180335403A1 (en) * | 2017-05-16 | 2018-11-22 | University Of Electronic Science And Technology Of China | Method for simulating magnetic flux leakage based on loop current |
| CN109446681A (en) * | 2018-11-02 | 2019-03-08 | 积成电子股份有限公司 | The optimization implementation method of analogue transformer magnetic hysteresis based on J-A model |
-
2019
- 2019-03-22 CN CN201910220153.XA patent/CN109884564B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200055A (en) * | 2014-09-26 | 2014-12-10 | 国家电网公司 | Excitation inrush current simulation method and device for ultra-high voltage transformer under condition of no-load closing |
| CN104991994A (en) * | 2015-06-09 | 2015-10-21 | 国网天津市电力公司 | Transformer field current simulation method based on J-A magnetic hysteresis model |
| JP2017187346A (en) * | 2016-04-04 | 2017-10-12 | 新日鐵住金株式会社 | Bh curve preparation device, electromagnetic analysis device, bh curve preparation method, and computer program |
| US20180335403A1 (en) * | 2017-05-16 | 2018-11-22 | University Of Electronic Science And Technology Of China | Method for simulating magnetic flux leakage based on loop current |
| CN107103163A (en) * | 2017-05-26 | 2017-08-29 | 华中科技大学 | A kind of method that current transformer J A simulation models are determined based on Physical Experiment |
| CN107609298A (en) * | 2017-09-26 | 2018-01-19 | 广东电网有限责任公司电力科学研究院 | A kind of Jiles Atherton model parameter identification methods and device |
| CN108460220A (en) * | 2018-03-16 | 2018-08-28 | 浙江大学 | A kind of prediction technique of the dynamic hystersis loop based on improved Jiles-Atherton models |
| CN109446681A (en) * | 2018-11-02 | 2019-03-08 | 积成电子股份有限公司 | The optimization implementation method of analogue transformer magnetic hysteresis based on J-A model |
Non-Patent Citations (3)
| Title |
|---|
| MONIA FERJANI JAAFAR 等: "Study and Modeling of Ferromagnetic Hysteresis", 《 2013 INTERNATIONAL CONFERENCE ON ELECTRICAL ENGINEERING AND SOFTWARE APPLICATIONS》 * |
| OKAN OZGONENEL 等: "Current Transformer Modeling for Compensating Algorithms", 《4TH INTERNATIONAL CONFERENCE ON POWER ENGINEERING, ENERGY AND ELECTRICAL DRIVES》 * |
| 李贞 等: "J-A磁化建模理论的质疑与修正方法研究", 《中国电机工程学报》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111556643A (en) * | 2020-05-09 | 2020-08-18 | 清华大学 | Magnetic field generation method and synchrotron |
| CN111556643B (en) * | 2020-05-09 | 2021-10-22 | 清华大学 | Magnetic field generation method and synchrotron |
| CN112083362A (en) * | 2020-09-10 | 2020-12-15 | 华北电力大学 | Electrical steel sheet hysteresis characteristic prediction method and system based on reversible magnetization component |
| CN112083362B (en) * | 2020-09-10 | 2021-09-24 | 华北电力大学 | Electrical steel sheet hysteresis characteristic prediction method and system based on reversible magnetization component |
| CN113933600A (en) * | 2021-10-19 | 2022-01-14 | 北京智芯仿真科技有限公司 | Magnetic core loss determination method and device for current saturation distortion of integrated circuit |
| CN113933599A (en) * | 2021-10-19 | 2022-01-14 | 北京智芯仿真科技有限公司 | Magnetic core loss determination method and device for current cut-off distortion of integrated circuit |
| CN113933599B (en) * | 2021-10-19 | 2022-05-10 | 北京智芯仿真科技有限公司 | Magnetic core loss determination method and device for current cut-off distortion of integrated circuit |
| CN114236433A (en) * | 2021-11-23 | 2022-03-25 | 浙江大学 | Ferromagnetic material magnetic induction intensity online estimation method |
| CN114236433B (en) * | 2021-11-23 | 2022-08-30 | 浙江大学 | Ferromagnetic material magnetic induction intensity online estimation method |
| CN114089013A (en) * | 2022-01-21 | 2022-02-25 | 华中科技大学 | Zero offset suppression method based on magnetization micro-asymmetric magnetic core group mirror image matching |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109884564B (en) | 2020-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109884564A (en) | A kind of magnetic core of transformer magnetic characteristic measurement method and device | |
| CN107656221B (en) | A kind of transformer core remanent magnetism evaluation method based on minor loop's slope | |
| CN109444776A (en) | Three-phase full-bridge converter iron core remanent magnetism measuring method, system and storage medium | |
| Zou et al. | Improved low‐frequency transformer model based on Jiles–Atherton hysteresis theory | |
| CN112364490A (en) | Model parameter identification method for hysteresis characteristics of ferromagnetic material | |
| Ebrahimi et al. | Analytical estimation of short circuit axial and radial forces on power transformers windings | |
| CN115267295B (en) | Determination method and system of fluxgate current sensor | |
| CN110399677A (en) | Based on the transformer DC magnetic bias simulation method for improving J-A formula under bias state | |
| Chandrasena et al. | Simulation of hysteresis and eddy current effects in a power transformer | |
| Villar et al. | Analysis of empirical core loss evaluation methods for non-sinusoidally fed medium frequency power transformers | |
| Duan et al. | Modeling and experimental validation of a dynamic regional saturation JA model for protective current transformer | |
| Nana et al. | Simple mathematical model for ferromagnetic core inductance and experimental validation | |
| Sato et al. | Study on an accurate iron loss calculation method considering the non-uniformity of the magnetic flux density | |
| Amirbande et al. | Calculation of leakage inductance in toroidal core transformer with non-interleaved windings | |
| CN113255285B (en) | Modeling method of single-phase four-column transformer based on JA model and dual principle | |
| Huo et al. | Study on the residual flux density measurement method for power transformer cores based on magnetising inductance | |
| Liu et al. | Current and voltage measurement method based on magnetic and electric field sensors for smart grid applications | |
| Baghel et al. | Modelling of minor hysteresis loops in rolling and transverse directions of grain‐oriented laminations | |
| CN210572788U (en) | Detection system for power distribution network tower chassis, pull disc and chuck | |
| Zhao et al. | Harmonic analysis of nonlinear magnetic field under sinusoidal and DC-biased magnetizations by the fixed-point method | |
| CN110346839B (en) | Detection system and method for power distribution network tower chassis, pull disc and chuck | |
| Zhao et al. | Fixed-point harmonic-balanced method for dc-biasing hysteresis analysis using the neural network and consuming function | |
| Sarker | Measurement and Modelling of Magnetic Properties of Fe-based Amorphous Magnetic Material | |
| Niedermeier et al. | A linear regression based method for estimating magnetic parameters of inductive power transfer systems | |
| CN117976099A (en) | Magnetic capacity element and application method thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |