CN205542340U - Three -phase magnetic field shielding structure among large -scale SVC - Google Patents
Three -phase magnetic field shielding structure among large -scale SVC Download PDFInfo
- Publication number
- CN205542340U CN205542340U CN201620089254.XU CN201620089254U CN205542340U CN 205542340 U CN205542340 U CN 205542340U CN 201620089254 U CN201620089254 U CN 201620089254U CN 205542340 U CN205542340 U CN 205542340U
- Authority
- CN
- China
- Prior art keywords
- svc
- magnetic field
- scale
- ground
- shielding structure
- 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.)
- Active
Links
Abstract
The utility model discloses a three -phase magnetic field shielding structure among large -scale SVC for on the three -phase reactor ground of cylinder, lay circular shield on each looks reactor ground, and the steel sheet is laid on the peripheral ground of each ground, circular shield has fold form upper surface. The utility model discloses a shield adopts the circular shield that has fold form upper surface to utilize the high magnetic permeability material, the line change is walked to the regional magnetic line of force bottom realizing, concentrates to distribute inside the silicon steel sheet material, and the magnetic line of force that passes through shielding layer entering ground lower region reduces by a wide margin, has played obvious shielding effect to ground system and cable shield layer circulation.
Description
Technical field
This utility model relates to the electromagnetic shielding field of power system, is specifically related in a kind of large-scale SVC three
Phase magnetic field shielding structure.
Background technology
In recent years, along with the fast development of power industry technology of transmission of electricity, particularly flexible AC technology is in state
In prevailing, dynamic reactive compensation device SVC has become in power system more important component part.Mesh
Front SVC device uses air reactor in a large number, does not haves the phenomena impair reactance parameters such as magnetic saturation, but
The space magnetic field of air reactor compares and dissipates, for powerful strong power system, and space magnetic field about
Energy is bigger, it is possible to surrounding is produced intense electromagnetic and pollutes.
For the large-scale SVC air reactor solution to surrounding, domestic be also made that many
Research work, as: use Ansys and Ansoft Maxwell software to carry out Hz noise shielding measure
Analyze, use can the mixed finite element method of more accurately calculating reactance device surrounding magnetic field to hollow reactance
Device is analyzed calculating, and uses unlike material, the effect of different size metallic magnetic field shield.These researchs
Contribute to the Distribution of Magnetic Field understanding around air reactor, it was also proposed that improve the rational method of Distribution of Magnetic Field.
But, the high-intensity magnetic field that air reactor produces also lacks concern for the influence degree of substation ground network system,
Meanwhile, it need to study further for the measure of three-phase magnetic field shielding and installation method thereof in large-scale SVC.
For solving electromagnetic pollution, special based on power frequency magnetic field shielding principle, need to consider to arrange screen in reactor lower end
Cover body, obtain the stray field shield effectiveness of dry-type air-core reactor, reduce the reactor impact on grounded screen.
Utility model content
The purpose of this utility model is for above-mentioned problems of the prior art, proposes a kind of large-scale
Three-phase magnetic field shielding structure in SVC, it is achieved the magnetic line of force of three-phase reactor bottom section moves towards to change, and concentrates
It is distributed in inside silicon steel material, it is achieved system and the obvious shield effectiveness of cable shield circulation over the ground.
For reaching the purpose of above-mentioned utility model, this utility model is achieved through the following technical solutions:
Three-phase magnetic field shielding structure in a kind of large-scale SVC, for cylindrical three-phase reactor ground,
Lay circular shield body on each phase reactor ground, and each phase ground peripheral ground lays steel plate, described
Circular shield body has accordion upper surface.
Described circular shield body is divided at least ten binary fan-shaped shields.
Further, described circular shield body include N number of a length of circular shield body radius strip fold
Sheet, each strip lamination is stacked with being formed the accordion upper surface of circular shield body with an angle.
Further, described strip laminate surface is insulating barrier.
Further, described accordion upper surface is saw tooth shaped crimp or undulating pleats.
Further, the steel plate that described each phase ground peripheral ground is laid is square plate, and it has can fit
The through hole of ground.
Further, described square plate is with the steel plate unit being divided at least quarter of through hole center of circle symmetry.
Further, described each steel plate unit is divided at least three square steel plate unit and a band circular arc lacks
Gusset unit.
Further, described each square steel plate unit, the edge of each band circular arc unfilled corner steel plate unit are equipped with
Insulating barrier.
Further, described circular shield body uses silicon steel as high magnetic conductor.
In the large-scale SVC of one of the present utility model, three-phase magnetic field shielding structure, has the advantages that
1, fitting tightly between all iron plates, it is ensured that the connection of magnetic loop, every piece of iron plate edge is coated with insulation
Paint prevents the electrical connection between iron plate, it is to avoid large-area eddy current effect.
2, due to the interpolation of high-permeability material, the magnetic line of force of bottom section changes cabling, integrated distribution
Inside silicon steel material, the magnetic line of force passing through screen layer entrance subterranean zone is greatly decreased, and to ground connection is
System and cable shield circulation serve obvious shield effectiveness.
3, the surface of strip lamination is coated with exhausted layer, prevent its with reactor bottom grounding copper bar electrically connect
Logical.
Accompanying drawing explanation
Fig. 1 is the plan structure schematic diagram of three-phase magnetic field shielding structure in large-scale SVC of the present utility model.
Fig. 2 is the side-looking structural representation of three-phase magnetic field shielding structure in large-scale SVC of the present utility model.
Fig. 3 is the circular shield body local knot of three-phase magnetic field shielding structure in large-scale SVC of the present utility model
Structure schematic diagram.
Fig. 4 is that in large-scale SVC of the present utility model, the strip lamination of three-phase magnetic field shielding structure shows
It is intended to.
Fig. 5 a is the band circular arc unfilled corner steel plate list of three-phase magnetic field shielding structure in large-scale SVC of the present utility model
The structural representation of unit.
Fig. 5 b is the square steel plate unit of three-phase magnetic field shielding structure in large-scale SVC of the present utility model
Structural representation.
Detailed description of the invention
Technical scheme in this utility model embodiment is carried out clear, complete with embodiment below in conjunction with the accompanying drawings
Describe wholely, it is clear that described embodiment be only a part of embodiment of this utility model rather than
All embodiments.
For the feature that dry-type air-core reactor power frequency stray field is big, according to different shielding requirements, based on magnetic
Flux shunting shielding principle, uses ferromagnetic material to make shield, utilizes the high permeance of ferromagnetic material,
Beam of magnetic line of force is tied to Ferromagnetic Material, changes magnetic line of force direction, to reach shield effectiveness.
Referring to three-phase magnetic field shielding in the large-scale SVC of Fig. 1 and Fig. 2, respectively this utility model embodiment
The plan structure schematic diagram of structure and side-looking structural representation.Three-phase in the large-scale SVC of one of the present embodiment
Magnetic field shielding structure, for cylindrical three-phase reactor ground, described three-phase reactor ground is divided into
A phase ground 41, B phase ground 42 and C phase ground 43, each phase reactor ground is laid circular shield body,
It is respectively the first circular shield body the 31, second circular shield body 32 and the 3rd circular shield body 33, and
Each phase ground peripheral ground lays steel plate 10, and described first to the 3rd circular shield body 31-33 is respectively provided with pleat
Corrugation upper surface (does not indicates).
As an embodiment, the accordion upper surface of described first to the 3rd circular shield body 31-33 is
Saw tooth shaped crimp or undulating pleats.
Described first to the 3rd circular shield body 31-33, all can be divided at least ten binary fan-shaped shieldings
Body 311, as a example by the first circular shield body 31, referring to Fig. 3, in large-scale SVC of the present utility model
The circular shield body partial structurtes schematic diagram of three-phase magnetic field shielding structure, described fan-shaped shield 311 is three
Ten degree of angles 312, are reserved with bearing 313, described bearing 313 at fan-shaped shield 311 outer side edges
Being the installation site of reactor foot rest, 12 pieces of fan-shaped shields 311 are put into from foot rest space, fan-shaped screen
Cover body 311 lower surface to be closely placed with reactor ground, be closely placed with between every piece, 12 pieces of fan-shaped shieldings
The disk bottom surface of body 311 assembly is the most smooth.
As another embodiment, in conjunction with Fig. 3 and Fig. 4, as a example by the first circular shield body 31, it includes
There are the strip lamination 315 of N number of a length of first circular shield body 31 radius, each strip lamination 315
It is stacked with being formed the accordion upper surface of the first circular shield body 31 with an angle, forms saw in this way
Dentation fold；The strip lamination 315 the most preferably with 10mm thickness stacks.
Described strip lamination 315 surface is insulating barrier (not shown), concrete, uses at strip
Lamination 315 surrounding coating insullac realizes this insulating barrier, prevents the grounding copper bar electricity bottom itself and reactor
Gas connects.
By above-mentioned fan-shaped shield 311 and strip lamination 315, the convenience of circular shield body can be realized
Transport and in-site installation..
As an embodiment, the steel plate that described each ground peripheral ground is laid is square plate 10, its tool
Having can the through hole (not shown) of fit ground.
As another embodiment, described square plate is with the steel being divided at least quarter of through hole center of circle symmetry
Slab element 101-104.The steel plate unit 101-104 enclosing ground can protect the ground level of fence to constitute one
Individual high magnetic permeability loop, stops the substantial amounts of magnetic line of force to be crossed into underground.
Referring to Fig. 5 a and Fig. 5 b, for the band circle of three-phase magnetic field shielding structure in large-scale SVC of the present utility model
Arc unfilled corner steel plate unit and the structural representation of square steel plate unit.As another embodiment, described respectively
Steel plate unit is divided at least three square steel plate unit 12 and a band circular arc unfilled corner steel plate unit 11,
When described square steel plate unit 12 is three, its respectively with the of band circular arc unfilled corner steel plate unit 11
Three adjacent with the four side 114 or relative splits of side 113 are arranged, described band circular arc unfilled corner steel plate unit
One jiao of 112 clampings in first side 111 and second side of 11 is circular arc unfilled corner 110.Above-mentioned each just
Between square plate unit 12, band circular arc unfilled corner steel plate unit 11 and each phase ground 41-43 the tightliest
Closely connected conjunction, it is ensured that the connection of magnetic loop, every block of square steel plate unit 12, every block of band circular arc unfilled corner steel plate
The edge of unit 11 is coated with insullac to prevent the electrical connection between steel plate, it is to avoid large-area eddy current is imitated
Should.Every piece of square steel plate unit 12, every piece of band circular arc unfilled corner steel plate unit 11 the most do not require ground connection,
If needing ground connection to be connected with grounding copper bar in the way of single-point by every block plate unit.
Above-described embodiment is only in order to illustrate this utility model and and skill described by unrestricted this utility model
Art scheme；Therefore, although this utility model is had been carried out by this specification with reference to each above-mentioned embodiment
Detailed description, but, it will be understood by those within the art that, still can be new to this practicality
Type is modified or equivalent；And all are without departing from the technical side of spirit and scope of the present utility model
Case and improvement thereof, it all should be contained in the middle of right of the present utility model.
Claims (10)
1. a three-phase magnetic field shielding structure in large-scale SVC, for cylindrical three-phase reactor ground
On, it is characterised in that lay circular shield body, and each ground peripheral ground on each phase reactor ground
Laying steel plate, described circular shield body has accordion upper surface.
Three-phase magnetic field shielding structure in large-scale SVC the most according to claim 1, it is characterised in that
Described circular shield body is divided at least ten binary fan-shaped shields.
Three-phase magnetic field shielding structure, its feature in large-scale SVC the most according to claim 1 and 2
Being, described circular shield body includes the strip lamination of N number of a length of circular shield body radius, respectively
Strip lamination is stacked with being formed the accordion upper surface of circular shield body with an angle.
Three-phase magnetic field shielding structure in large-scale SVC the most according to claim 3, it is characterised in that
Described strip laminate surface is insulating barrier.
Three-phase magnetic field shielding structure, its feature in large-scale SVC the most according to claim 1 and 2
Being, described accordion upper surface is saw tooth shaped crimp or undulating pleats.
Three-phase magnetic field shielding structure, its feature in large-scale SVC the most according to claim 1 and 2
Being, the steel plate that described each ground peripheral ground is laid is square plate, and it has can fit ground logical
Hole.
Three-phase magnetic field shielding structure in large-scale SVC the most according to claim 6, it is characterised in that
Described square plate is with the steel plate unit being divided at least quarter of through hole center of circle symmetry.
Three-phase magnetic field shielding structure in large-scale SVC the most according to claim 7, it is characterised in that
Described each steel plate unit is divided at least three square steel plate unit and a band circular arc unfilled corner steel plate unit.
Three-phase magnetic field shielding structure in large-scale SVC the most according to claim 8, it is characterised in that
Described each square steel plate unit, the edge of each band circular arc unfilled corner steel plate unit are equipped with insulating barrier.
Three-phase magnetic field shielding structure in large-scale SVC the most according to claim 1, it is characterised in that
Described circular shield body uses silicon steel as high magnetic conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620089254.XU CN205542340U (en) | 2016-01-29 | 2016-01-29 | Three -phase magnetic field shielding structure among large -scale SVC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620089254.XU CN205542340U (en) | 2016-01-29 | 2016-01-29 | Three -phase magnetic field shielding structure among large -scale SVC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205542340U true CN205542340U (en) | 2016-08-31 |
Family
ID=56772637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620089254.XU Active CN205542340U (en) | 2016-01-29 | 2016-01-29 | Three -phase magnetic field shielding structure among large -scale SVC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205542340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659125A (en) * | 2018-12-05 | 2019-04-19 | 山东电力设备有限公司 | A kind of magnetic field shielding device for dry-type hollow smoothing reactor |
-
2016
- 2016-01-29 CN CN201620089254.XU patent/CN205542340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659125A (en) * | 2018-12-05 | 2019-04-19 | 山东电力设备有限公司 | A kind of magnetic field shielding device for dry-type hollow smoothing reactor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101087768B1 (en) | Emi cancellation device in power supply and collector device for magnetic induction power transmission | |
| CN102412514A (en) | Box-type substation shell possessing electromagnetic shielding function | |
| CN205542340U (en) | Three -phase magnetic field shielding structure among large -scale SVC | |
| CN104183332A (en) | Composite material shielding power cable | |
| CN203325630U (en) | Dry-type air-core reactor for magnetic shielding | |
| CN105761913B (en) | A kind of electromagnetic armouring structure of GIS electronic transformer | |
| CN105826848B (en) | Power station grounded screen | |
| CN107834426A (en) | Electric pole mask | |
| KR101879938B1 (en) | Power Supply device for electric vehicle using lines of generating reverse magnetic field | |
| KR101102991B1 (en) | Carbon grounding bar for lightning arrester | |
| CN208489529U (en) | A kind of prefabricated cabin | |
| CN205543274U (en) | Reduce direct current earthing pole step voltage structure | |
| CN204651048U (en) | A kind of wisdom energy acid-fast alkali-proof height anti-interference type guide cable | |
| CN205524050U (en) | Aluminum alloy EMC wire casing under EMUs car | |
| CN208209029U (en) | Photovoltaic plant earthed system | |
| KR20220033868A (en) | Structure for shielding magnetic field having dissimilar composite material | |
| JP2021079870A (en) | Magnetic shield device | |
| KR101925373B1 (en) | Shielding apparatus for magnetic field | |
| KR20150037137A (en) | Electromagnetic interference shielding material and shielding method using the same | |
| CN204615229U (en) | Square-shaped radiation shape GIS substation structure | |
| CN104505684B (en) | Earthing pole installation method and earthing pole | |
| CN208078393U (en) | It is a kind of to overcome wire structures of the air reactor to auxiliary equipment magnetic interference of standing | |
| CN206726836U (en) | Electric railway shielded cable special | |
| CN202662825U (en) | Lightning-proof grounding net of nuclear power station | |
| CN205451847U (en) | Direct current dust removal cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |