CN209266179U - A kind of magnetic field shielding device for dry-type hollow smoothing reactor - Google Patents
A kind of magnetic field shielding device for dry-type hollow smoothing reactor Download PDFInfo
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- CN209266179U CN209266179U CN201822029236.4U CN201822029236U CN209266179U CN 209266179 U CN209266179 U CN 209266179U CN 201822029236 U CN201822029236 U CN 201822029236U CN 209266179 U CN209266179 U CN 209266179U
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- dry
- smoothing reactor
- type hollow
- magnetic field
- protective plate
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Abstract
The utility model relates to a kind of magnetic field shielding devices for dry-type hollow smoothing reactor, including the protective plate parallel with dry-type hollow smoothing reactor bottom surface being set to immediately below dry-type hollow smoothing reactor, the protection plate suqare is greater than dry-type hollow smoothing reactor base area, and the protective plate is made of permeability magnetic material.The utility model increases shielding action of the fence to magnetic field, the electromagnetic pollution of converter station Near Ground is reduced, so that the magnetic field strength near exit passageway is significantly reduced by the design to protective fence.The utility model solves the problems, such as that converter station exit passageway electromagnetic pollution is excessive, and staff is avoided to receive more electromagnetic radiation.
Description
Technical field
The utility model relates to a kind of magnetic field shielding devices, and in particular to a kind of magnetic for dry-type hollow smoothing reactor
Field screening arrangement.
Background technique
In extra-high voltage direct-current power transmission and transformation, smoothing reactor is the important equipment of converter station, is generally serially connected in each pole and changes
Between the DC output end and DC line for flowing device, main rise inhibits harmonic wave, the effect of fault current limiting.Extra-high voltage dry type is empty
Heart smoothing reactor iron-core-free, substantially using air as magnetic circuit, space magnetic field coupling and radiation are more serious, and converter station ground is attached
Close electromagnetic pollution is serious, and staff receives more electromagnetic radiation.Studies have shown that space magnetic field when operating normally may
Cause converter station staff uncomfortable, there are some potential safety problemss.
Summary of the invention
In view of the above-mentioned problems, the utility model designs a kind of electromagnetic pollution of reduction converter station Near Ground, avoids work
Personnel receive the magnetic field shielding device for dry-type hollow smoothing reactor of more electromagnetic radiation.
To solve the above problems, the technical solution that the application takes are as follows: a kind of magnetic for dry-type hollow smoothing reactor
Field screening arrangement, it is parallel with dry-type hollow smoothing reactor bottom surface immediately below dry-type hollow smoothing reactor including being set to
Protective plate, the protection plate suqare are greater than dry-type hollow smoothing reactor base area, and the protective plate uses magnetic conduction material
Material is made.The protective plate not only can prevent passerby close, but also can reduce the electromagnetic pollution of converter station Near Ground, avoid work
Personnel receive more electromagnetic radiation.
Preferably, the protective plate is provided in round, and according to the characteristic distributions in magnetic field, protective plate is provided in round energy
It enough include more magnetic induction lines, shield effectiveness is preferable.
Preferably, the protective plate be by it is several protection railings be formed by connecting there are the protective fences in gap, thus
It is conducive to heat dissipation convenient for air circulation.In the case where guaranteeing heat dissipation, protection railing quantity more multi-shielding effect is better.Each protection
It can weld and fix between railing.
Preferably, the diameter of the protective plate is determined according to the size and voltage class of dry-type hollow smoothing reactor.
Comprehensively consider the influence of molding feasibility and outdoor environment, the protective plate is made of silicon steel material.
Preferably, the protective plate is set to immediately below dry-type hollow smoothing reactor at 0.5m.Protective plate can pass through
Insulator below dry-type hollow smoothing reactor is installed.
The utility model increases shielding action of the fence to magnetic field by the design to protective fence, with reducing converter station
Electromagnetic pollution near face, so that the magnetic field strength near exit passageway is significantly reduced.The utility model solves the change of current
It stands the excessive problem of exit passageway electromagnetic pollution, staff is avoided to receive more electromagnetic radiation.
Detailed description of the invention
Fig. 1 is dry-type hollow smoothing reactor structural schematic diagram；
Fig. 2 is the utility model structure diagram；
Fig. 3 is according to certain converter station, and the reactor of normal operation is away from the Distribution of Magnetic Field measured in above the ground 1.5m plane
Figure curve graph；
Fig. 4 is that the shield effectiveness of three kinds of different materials compares figure；
Fig. 5 is shield area change schematic diagram, and wherein h is distance of the shield apart from reactor bottom, and d is shield
Thickness, R be shield radius.
Specific embodiment
Illustrate the utility model referring to specific embodiment.It will be appreciated by those skilled in the art that these are implemented
Example is merely to illustrate the utility model, does not limit the scope of the utility model in any way.
A kind of magnetic field shielding device for dry-type hollow smoothing reactor, as shown in Fig. 2, including being set to dry-type hollow
The protective plate parallel with dry-type hollow smoothing reactor bottom surface immediately below smoothing reactor, the protection plate suqare are greater than dry
Formula hollow smoothing reactor base area, the protective plate are made of permeability magnetic material.
The protective plate is provided in round, and according to the characteristic distributions in magnetic field, protective plate, which is provided in round, to include
More magnetic induction lines, shield effectiveness are preferable.In Fig. 3, certain ± 600kV converter station smoothing reactor spatial magnetic field is measured,
Its Distribution of Magnetic Field form meets all hollow smoothing reactors.Magnetic field strength is bright compared with around immediately below hollow smoothing reactor
It is aobvious to increase.As a result, in round protective plate region provided by the utility model, most comprising magnetic induction line, shield effectiveness is best.It is described
The diameter of protective plate is determined according to the size and voltage class of dry-type hollow smoothing reactor.Round protection board diameter takes herein
In the original rectangular fence diagonal line length of the converter station.
The protective plate is made of silicon steel material.Using three kinds of aluminium, cast iron and silicon steel typical materials to static magnetic field
It is shielded, the relative permeability and conductivity parameters of three kinds of materials are as shown in table 1.Shield, that is, protective plate is radius
The plate structure of 2.5m, thickness 1cm are placed in immediately below dry-type hollow smoothing reactor at 0.5m.
The parameter of 1 three kinds of shielding materials of table
Compare three kinds of materials to the shield effectiveness of static magnetic field, the magnetic induction investigated below protective plate at 10cm radially is strong
Size is spent, as shown in figure 4, wherein abscissa is horizontal distance of the observation point away from dry-type hollow smoothing reactor central axis.It can be seen that
High-permeability material has good shield effectiveness to static magnetic field, and the higher shield effectiveness of magnetic conductivity is better.And high conductivity
Material shielding action cannot be played to static magnetic field.Therefore, the silicon steel sheet class material of high magnetic conduction meets the requires of the utility model.
The protective plate be by it is several protection railings be formed by connecting there are the protective fences in gap.
In Fig. 5, simulation shield is the influence for protecting plate suqare to shield effectiveness.When shield radius R=0.5~6m
Induction level below shield.Magnetic induction intensity value is depicted as curve by the representative value for taking several radiuses, wherein horizontal
Coordinate is horizontal distance of the observation point away from reactor central axes, and ordinate is the induction level of the point.It can be seen that magnetic field screen
The area for covering effect and shield is positively correlated.Protective fence described in the utility model should have bigger magnetic conduction as a result,
Area, in conjunction with the practical situations of smoothing reactor, it is proposed that guarantee dry-type air-core reactor and protective fence safe distance
Under the premise of, increase the protection railing of protective fence circumference and vertical direction, improves the shielding action of protective fence.
Claims (6)
1. a kind of magnetic field shielding device for dry-type hollow smoothing reactor, it is characterised in that: including being set to dry-type hollow
The protective plate parallel with dry-type hollow smoothing reactor bottom surface immediately below smoothing reactor, the protection plate suqare are greater than dry
Formula hollow smoothing reactor base area, the protective plate are made of permeability magnetic material.
2. the magnetic field shielding device according to claim 1 for dry-type hollow smoothing reactor, it is characterised in that: described
Protective plate be provided in round.
3. the magnetic field shielding device according to claim 1 for dry-type hollow smoothing reactor, it is characterised in that: described
Protective plate be by it is several protection railings be formed by connecting there are the protective fences in gap.
4. the magnetic field shielding device according to claim 2 for dry-type hollow smoothing reactor, it is characterised in that: described
The diameter of protective plate is determined according to the size and voltage class of dry-type hollow smoothing reactor.
5. the magnetic field shielding device according to claim 1 for dry-type hollow smoothing reactor, it is characterised in that: described
Protective plate be made of silicon steel material.
6. the magnetic field shielding device according to claim 1 for dry-type hollow smoothing reactor, it is characterised in that: described
Protective plate be set to immediately below dry-type hollow smoothing reactor at 0.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822029236.4U CN209266179U (en) | 2018-12-05 | 2018-12-05 | A kind of magnetic field shielding device for dry-type hollow smoothing reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822029236.4U CN209266179U (en) | 2018-12-05 | 2018-12-05 | A kind of magnetic field shielding device for dry-type hollow smoothing reactor |
Publications (1)
| Publication Number | Publication Date |
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| CN209266179U true CN209266179U (en) | 2019-08-16 |
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| CN201822029236.4U Active CN209266179U (en) | 2018-12-05 | 2018-12-05 | A kind of magnetic field shielding device for dry-type hollow smoothing reactor |
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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 |
-
2018
- 2018-12-05 CN CN201822029236.4U patent/CN209266179U/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 |
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