CN109584689A - A kind of simplified model optimization method based on air reactor small scale test - Google Patents
A kind of simplified model optimization method based on air reactor small scale test Download PDFInfo
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- CN109584689A CN109584689A CN201710898386.6A CN201710898386A CN109584689A CN 109584689 A CN109584689 A CN 109584689A CN 201710898386 A CN201710898386 A CN 201710898386A CN 109584689 A CN109584689 A CN 109584689A
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- 238000005457 optimization Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 title claims abstract description 15
- 238000005259 measurement Methods 0.000 claims abstract description 56
- 239000004020 conductor Substances 0.000 claims abstract description 41
- 238000009826 distribution Methods 0.000 claims abstract description 21
- 230000006698 induction Effects 0.000 claims abstract description 14
- 125000002619 bicyclic group Chemical group 0.000 claims description 16
- 239000012141 concentrate Substances 0.000 claims description 2
- 238000004088 simulation Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 description 4
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- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
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- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
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- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
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- H01F17/02—Fixed inductances of the signal type without magnetic core
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Abstract
The invention discloses a kind of simplified model optimization methods based on air reactor small scale test, including, former scale model of the coiling as air reactor measures the radial and axial Distribution of Magnetic Field around former scale model；The multiple simplified models made of different number circular ring shape current-carrying conductors of coiling, and the radial and axial Distribution of Magnetic Field around each simplified model is measured respectively, the current density for needing to guarantee to flow through circular ring shape current-carrying conductor in measurement process is identical as former scale model；Former scale model and the radial and axial magnetic induction intensity of simplified model are drawn with the curve of measurement distance change, relatively and selects the optimal reduced model closest to former scale model Distribution of Magnetic Field.Distribution of Magnetic Field near energy simplicity, rapid simulation air reactor, has important practical significance when predicting air reactor Distribution of Magnetic Field.
Description
Technical field
The present invention relates to air reactor simplified model optimisation technique fields, more particularly to a kind of air reactor that is based on to contract
Than the simplified model optimization method of experiment.
Background technique
Air reactor is the inductive high-voltage electricity in electric system for limiting short-circuit current, reactive compensation and phase shift etc.
Device, magnetic flux are formed into a loop through air, therefore claim open-core type reactor.Air reactor can generate strong power frequency magnetic in the process of running
, the electrical equipment safe and stable operation of surrounding is interfered.And its simplified model can be used for studying air reactor
Distribution of Magnetic Field, therefore the optimization of air reactor simplified model has important reality for research prediction air reactor Distribution of Magnetic Field
Border meaning.
Summary of the invention
The purpose of the present invention is to solve the above-mentioned problems, provides a kind of simplification based on air reactor small scale test
Model optimization method, can Distribution of Magnetic Field near easy, rapid simulation air reactor, in prediction air reactor magnetic field point
There is important practical significance when cloth.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of simplified model optimization method based on air reactor small scale test, including, coiling is as hollow electricity
The former scale model of anti-device measures the radial and axial Distribution of Magnetic Field around former scale model；
The multiple simplified models made of different number circular ring shape current-carrying conductors of coiling, and each simplified model is measured respectively
The radial and axial Distribution of Magnetic Field of surrounding, the current density for needing to guarantee to flow through circular ring shape current-carrying conductor in measurement process and original
Scale model is identical；
Former scale model and the radial and axial magnetic induction intensity of simplified model are drawn with the curve of measurement distance change, than
Relatively and select the optimal reduced model closest to former scale model Distribution of Magnetic Field.
Simplified model includes monocycle simplified model, bicyclic simplified model and tricyclic simplified model；
Monocycle simplified model is to concentrate on all circles in one circular ring shape current-carrying conductor；Bicyclic simplified model is to use two
A circular ring shape current-carrying conductor, the number of turns of two circular ring shape current-carrying conductors are identical；Tricyclic simplified model is to be carried using three circular ring shapes
The number of turns of current conductor, three circular ring shape current-carrying conductors is identical.
When the radial magnetic field profile of the former scale model of measurement and monocycle simplified model, magnetic field measuring apparatus is placed on model center
Highly, change length of the measurement point apart from radial center and carry out multiple groups measurement；
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, is changed the height apart from axial centre and is carried out
Multiple groups measurement.
The vertical range changed between two circular ring shape current-carrying conductors in bicyclic simplified model forms different simplified models.
When measuring the radial magnetic field of bicyclic simplified model, magnetic field measuring apparatus is placed in two circular ring shape current-carrying conductor interpositions
It sets, changes length of the measurement point apart from radial center and carry out multiple groups measurement；
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, is changed the height apart from axial centre and is carried out
Multiple groups measurement.
The vertical range changed between three circular ring shape current-carrying conductors in tricyclic simplified model forms different simplified models.
The diameter of simplified model is all identical as the diameter of former scale model.
When measuring the radial magnetic field of tricyclic simplified model, magnetic field measuring apparatus is placed in middle circle annular current-carrying conductor with high
The position of degree changes length of the measurement point apart from radial center and carries out multiple groups measurement；
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, changes height of the measurement point apart from axial centre
Degree carries out multiple groups measurement.
From the easy degree of production model and the accuracy of model, two circular ring shape current-carrying are led in bicyclic simplified model
The structure at the top of the former scale model of body distance being respectively 1/3l and 2/3l is optimal models.
Radial measurement result is in 1.5 times of model diameter apart from outer accurate, and axially measured result is in 1.5 times of distances of model length
It is outer accurate.
Beneficial effects of the present invention:
Using method provided by the invention can Distribution of Magnetic Field near easy, rapid simulation air reactor, pre-
There is important practical significance when surveying air reactor Distribution of Magnetic Field, to guarantee the electrical equipment safety and stability around air reactor
Operation provides support.
Detailed description of the invention
Fig. 1 (a) is bicyclic simplified model structure 1；Fig. 1 (b) is bicyclic simplified model structure 2；
Fig. 2 (a) is tricyclic simplified model structure 1；Fig. 2 (b) is tricyclic simplified model structure 2；Fig. 2 (c) simplifies for tricyclic
Model structure 3；
Fig. 3 is radial magnetic induction intensity with measurement distance change；
Fig. 4 is axial magnetic induction intensity with measurement distance change.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
In order to simplify scale model process of establishing, shortens the modeling time, the hollow reactance of small scale test method research can be used
The model simplification problem of device.The present invention establishes the former scale model and several circular ring shapes of air reactor in the lab
Current-carrying conductor measures the Distribution of Magnetic Field near it as simplified model, relatively and selects closest to air reactor model magnetic field
The optimal reduced model of distribution.
Simplified model magnetic-field measurement
1) air reactor master mould magnetic-field measurement
Former scale model of the coiling as air reactor first, the length of this model are l=134mm, diameter D
=138mm, the number of turns N=120.Then distinguish the radial and axial Distribution of Magnetic Field around measurement model.Background magnetic field is 0.03 μ
T, the electric current for flowing through model is 0.03A, frequency 50Hz.
When measuring radial magnetic field, it is the i.e. height of model center at 67mm, measurement point distance that magnetic field measuring apparatus, which is placed on height,
The length of radial center is r.Due to the limitation of magnetic field measuring apparatus size, minimum measurement distance is distance center r=85mm, measurement
The results are shown in Table 1.
1 master mould radial direction magnetic induction intensity of table
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, and the height apart from axial centre is h, measurement
The results are shown in Table 2.
2 master mould axial direction magnetic induction intensity of table
2) air reactor monocycle simplified model magnetic-field measurement
For the simplified model of air reactor, circles all in model are concentrated on a circular ring shape current-carrying first and led by us
In body, referred to as monocycle simplified model.The present invention is the simplicity of modelling, and the circular ring shape current-carrying that one the number of turns of coiling is 40 is led
Body, diameter are identical as master mould.To guarantee that the current density for flowing through circular ring shape current-carrying conductor is identical as master mould, lead in experiment
Enter the electric current of 0.09A, 50Hz.
When measuring radial magnetic field, magnetic field measuring apparatus is identical as monocycle simplified model height, and measurement point is apart from radial center
Length is r.Due to the limitation of magnetic field measuring apparatus size, minimum measurement distance is distance center r=85mm, measurement result such as table 3
It is shown.
3 monocycle model radial direction magnetic induction intensity of table
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, and the height apart from axial centre is h, measurement
The results are shown in Table 4.
4 monocycle simplified model axial direction magnetic induction intensity of table
3) the bicyclic simplified model magnetic-field measurement of air reactor
Second of simplified model is to replace master mould, referred to as bicyclic simplified model using two circular ring shape current-carrying conductors.This
The each circular ring shape current-carrying conductor the number of turns for inventing institute's coiling is 40, and diameter is identical as master mould.To guarantee to flow through circular ring shape
The current density of current-carrying conductor is identical as master mould, and the electric current of 0.045A, 50Hz are passed through in experiment.
Different according to the spacing distances of two circular ring shape current-carrying conductors, the present invention studies following two structure, such as Fig. 1 (a) and
Shown in Fig. 1 (b).It is respectively 1/3l and 2/3l at the top of two circular ring shape current-carrying conductor distance models in Fig. 1 (a)；In Fig. 1 (b), two
It is respectively 1/4l and 3/4l at the top of circular ring shape current-carrying conductor distance model.
When measuring radial magnetic field, magnetic field measuring apparatus is placed in two circular ring shape current-carrying conductor middle positions, measurement point distance
The length of radial center is r.Due to the limitation of magnetic field measuring apparatus size, minimum measurement distance is distance center r=85mm, measurement
The results are shown in Table 5.
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, and the height apart from axial centre is h, measurement
The results are shown in Table 6.
The bicyclic simplified model radial direction magnetic induction intensity of table 5
The bicyclic simplified model axial direction magnetic induction intensity of table 6
4) air reactor tricyclic simplified model magnetic-field measurement
The third simplified model is to replace master mould, referred to as tricyclic simplified model using three circular ring shape current-carrying conductors.This
The each circular ring shape current-carrying conductor the number of turns for inventing institute's coiling is 40, and diameter is identical as master mould.To guarantee to flow through circular ring shape
The current density of current-carrying conductor is identical as master mould, and the electric current of 0.03A, 50Hz are passed through in experiment.
It is different according to the interval of three circular ring shape current-carrying conductors, the following three kinds of structures of present invention research, such as Fig. 2 (a)-Fig. 2 (c)
It is shown.In Fig. 2 (a), three circular ring shape current-carrying conductors are located at the top of model, height center and bottom；In Fig. 2 (b), three
It is respectively l/4, l/2 and 3l/4 at the top of circular ring shape current-carrying conductor distance model；In Fig. 2 (c), three circular ring shape current-carrying conductors are apart from mould
It is respectively l/8, l/2 and 7l/8 at the top of type.
When measuring radial magnetic field, magnetic field measuring apparatus is placed in and the level position of middle circle annular current-carrying conductor, measurement
Length of the point apart from radial center is r, and measurement result is as shown in table 7.
7 tricyclic simplified model radial direction magnetic induction intensity of table
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, and the height apart from axial centre is h, measurement
The results are shown in Table 8.
8 tricyclic simplified model axial direction magnetic induction intensity of table
The analysis of simplified model measurement result
According to measurement result, master mould and the radial and axial magnetic induction intensity of simplified model can be drawn with measurement distance
The curve of variation, as shown in Figure 3 and Figure 4.Above six kinds of simplified models can all simulate roughly master mould radial direction and axial magnetic field, but
Within the scope of distance center 200mm, resultant error measured by simplified model is larger, and reason is mainly measuring instrument probe size
Greatly.Outside distance 200mm range, simplified model can preferable simulation master mould.In view of production model easy degree and
The accuracy of model, bicyclic simplified model structure 1 are optimal models.It can be easy, rapid in small scale test method using this model
Distribution of Magnetic Field near simulation air reactor, radial measurement result is outer relatively accurate in 1.5 times of distances of model diameter, axial to survey
It is outer relatively accurate in 1.5 times of distances of model length to measure result.The diameter of air reactor and height are 1-2m in Practical Project, and
The scope of activities of the public is generally higher than 1.5 times of air reactor diameter, therefore simplified model is in prediction air reactor magnetic
There is important practical significance when field distribution
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of simplified model optimization method based on air reactor small scale test, characterized in that including coiling conduct
The former scale model of air reactor measures the radial and axial Distribution of Magnetic Field around former scale model；
The multiple simplified models made of different number circular ring shape current-carrying conductors of coiling, and measured around each simplified model respectively
Radial and axial Distribution of Magnetic Field, the current density for needing to guarantee to flow through circular ring shape current-carrying conductor in measurement process and former contracting ratio
Model is identical；
Former scale model and the radial and axial magnetic induction intensity of simplified model are drawn with the curve of measurement distance change, is compared simultaneously
Optimal reduced model of the selection closest to former scale model Distribution of Magnetic Field.
2. a kind of simplified model optimization method based on air reactor small scale test as described in claim 1, characterized in that letter
Changing model includes monocycle simplified model, bicyclic simplified model and tricyclic simplified model；
Monocycle simplified model is to concentrate on all circles in one circular ring shape current-carrying conductor；Bicyclic simplified model is to use two circles
The number of turns of annular current-carrying conductor, two circular ring shape current-carrying conductors is identical；Tricyclic simplified model is to be led using three circular ring shape current-carrying
The number of turns of body, three circular ring shape current-carrying conductors is identical.
3. a kind of simplified model optimization method based on air reactor small scale test as claimed in claim 2, characterized in that survey
When the radial magnetic field profile of the former scale model of amount and monocycle simplified model, magnetic field measuring apparatus is placed on the height of model center, changes
Length of the measurement point apart from radial center carries out multiple groups measurement；
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, is changed the height apart from axial centre and is carried out multiple groups
Measurement.
4. a kind of simplified model optimization method based on air reactor small scale test as claimed in claim 2, characterized in that double
The vertical range changed between two circular ring shape current-carrying conductors in ring simplified model forms different simplified models.
5. a kind of simplified model optimization method based on air reactor small scale test, feature as described in claim 2 or 4
It is when measuring the radial magnetic field of bicyclic simplified model, magnetic field measuring apparatus is placed in two circular ring shape current-carrying conductor middle positions, changes
Become length of the measurement point apart from radial center and carries out multiple groups measurement；
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, is changed the height apart from axial centre and is carried out multiple groups
Measurement.
6. a kind of simplified model optimization method based on air reactor small scale test as claimed in claim 2, characterized in that three
The vertical range changed between three circular ring shape current-carrying conductors in ring simplified model forms different simplified models.
7. a kind of simplified model optimization method based on air reactor small scale test as described in claim 1, characterized in that letter
The diameter for changing model is all identical as the diameter of former scale model.
8. a kind of simplified model optimization method based on air reactor small scale test as claimed in claim 2, characterized in that survey
Measure tricyclic simplified model radial magnetic field when, magnetic field measuring apparatus be placed in the level position of middle circle annular current-carrying conductor,
Change length of the measurement point apart from radial center and carries out multiple groups measurement；
When measuring axial magnetic field, magnetic field measuring apparatus is placed at model center axis, change height of the measurement point apart from axial centre into
The measurement of row multiple groups.
9. a kind of simplified model optimization method based on air reactor small scale test as described in claim 1, characterized in that from
The accuracy of the easy degree and model that make model is set out, the two former contracting of circular ring shape current-carrying conductor distance in bicyclic simplified model
Structure than at the top of model being respectively 1/3l and 2/3l is optimal models.
10. a kind of simplified model optimization method based on air reactor small scale test as described in claim 1, characterized in that
Radial measurement result is in 1.5 times of model diameter apart from outer accurate, and axially measured result is at 1.5 times of model length apart from outer accurate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945875A (en) * | 2021-09-30 | 2022-01-18 | 国家电投集团科学技术研究院有限公司 | Permanent magnet rotor static magnetic field measuring method, grating, tool and application thereof |
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|---|---|---|---|---|
| US5512828A (en) * | 1994-06-29 | 1996-04-30 | Siemens Aktiengesellschaft | Actively shielded transverse gradient coil for nuclear magnetic resonance tomography apparatus |
| CN103472415A (en) * | 2013-09-18 | 2013-12-25 | 国家电网公司 | Method for conducting compression ratio experiment of space magnetic field of air reactors |
| CN103762057A (en) * | 2014-01-09 | 2014-04-30 | 国家电网公司 | Hollow reactor model simplifying method |
| CN204834294U (en) * | 2015-08-15 | 2015-12-02 | 凌海科诚电力电器制造有限责任公司 | Dry -type air -core reactor winding |
-
2017
- 2017-09-28 CN CN201710898386.6A patent/CN109584689A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512828A (en) * | 1994-06-29 | 1996-04-30 | Siemens Aktiengesellschaft | Actively shielded transverse gradient coil for nuclear magnetic resonance tomography apparatus |
| CN103472415A (en) * | 2013-09-18 | 2013-12-25 | 国家电网公司 | Method for conducting compression ratio experiment of space magnetic field of air reactors |
| CN103762057A (en) * | 2014-01-09 | 2014-04-30 | 国家电网公司 | Hollow reactor model simplifying method |
| CN204834294U (en) * | 2015-08-15 | 2015-12-02 | 凌海科诚电力电器制造有限责任公司 | Dry -type air -core reactor winding |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113945875A (en) * | 2021-09-30 | 2022-01-18 | 国家电投集团科学技术研究院有限公司 | Permanent magnet rotor static magnetic field measuring method, grating, tool and application thereof |
| CN113945875B (en) * | 2021-09-30 | 2024-08-06 | 国家电投集团科学技术研究院有限公司 | Permanent magnet rotor static magnetic field measuring method, grid, tool and application of tool |
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