CN110148504A - A kind of transformer neutral point DC magnetic biasing inhibition inductive resistance device - Google Patents
A kind of transformer neutral point DC magnetic biasing inhibition inductive resistance device Download PDFInfo
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- CN110148504A CN110148504A CN201910510375.5A CN201910510375A CN110148504A CN 110148504 A CN110148504 A CN 110148504A CN 201910510375 A CN201910510375 A CN 201910510375A CN 110148504 A CN110148504 A CN 110148504A
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- 230000007935 neutral effect Effects 0.000 title claims abstract description 29
- 230000001939 inductive effect Effects 0.000 title claims abstract description 21
- 230000005764 inhibitory process Effects 0.000 title description 3
- 230000007704 transition Effects 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 238000000819 phase cycle Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000006698 induction Effects 0.000 abstract description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000001629 suppression Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/01—Mounting; Supporting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/16—Resistor networks not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C3/00—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids
- H01C3/14—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding
- H01C3/16—Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids the resistive element being formed in two or more coils or loops continuously wound as a spiral, helical or toroidal winding including two or more distinct wound elements or two or more winding patterns
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses a kind of transformer neutral point DC magnetic biasings to inhibit inductive resistance device, is fixedly connected with insulated column below c-type foundation ring；In the spiral resistive piece of the top setting several layers of c-type foundation ring；Block is dielectrically separated between setting resistor disc between spiral resistive piece；It is dielectrically separated from the through-hole at the both ends of block to respectively penetrate between resistor disc and is dielectrically separated from the fixed spiral shell stick of block and fixes；Outer ring spiral resistance ring plate is connected by the transition plate that outer ring connects inner ring with inner ring spiral resistive piece after every several circles of helical disk；Inner ring spiral resistive piece connects also by the transition plate that inner ring connects outer ring with outer ring spiral resistive piece after every several circles of helical disk, is connected when inner ring spiral resistive piece intersects by inner ring cross connect sheet；It is connected when outer ring spiral resistive piece intersects by outer ring cross connect sheet；Under the premise of ensure that the induction reactance and resistance value that neutral ground inductive resistance has requirement of engineering, reduces the volume of the neutral ground inductive resistance of transformer, meet engineer application needs.
Description
Technical field
The present invention relates to power system transformers, are related to electric system and inhibit the transformer neutral point of D.C. magnetic biasing earthy
Resistor, and in particular to a kind of transformer neutral point DC magnetic biasing suppression resistor belongs to transmission facility technical field.
Background technique
In the single-stage Transmission Mode of superhigh voltage DC (HVDC) transmission system, in the larger range of earthing pole periphery, respectively
The power transformer neutral point of substation flows into DC magnetic bias current.DC magnetic bias current can be such that the iron core of transformer magnetizes, is electric
Wave distortion, vibration and noise aggravation are flowed, totally unfavorable influence is brought to AC system.In existing substation, transformation
Device neutral point is directly grounded generally by reactor.The safety operation level of transformer is improved, i.e., can effectively be inhibited
Transformer neutral point DC magnetic biasing electric current, and the transformer neutral conductor can be reliably protected and set from being damaged because of high current overvoltage
Standby insulation, just must be in the existing earth-return circuit series resistance device of substation's neutral point of influenced by DC magnetic biasing.
Patent 201620320438.2 " a kind of novel cylinder helical inductor resistance " discloses a kind of extra-high straightening of adaptation
Transformer neutral point ground connection in transmission system substation is flowed, there is small in size, power greatly, effectively to inhibit transformer neutral point straight
The novel cylinder helical inductor resistance that the inductor and resistor for flowing bias current are combined into one.But the inductive resistance is using single
Helically coiling, reach the induction reactance and resistance value of requirement of engineering simultaneously, and the volume of inductive resistance is existing X-bridge circuit system
One times or more of system, and can not engineer application.
Therefore, reduce the volume of the neutral ground inductive resistance of transformer, guarantee that neutral ground inductive resistance has
The induction reactance and resistance value of requirement of engineering are transformer neutral point DC magnetic biasing suppression resistors had using inductive resistance it is to be solved
Technical problem.
Summary of the invention
In place of according to above-mentioned the deficiencies in the prior art, the present invention realizes a kind of transformer neutral point
D.C. magnetic biasing inhibits inductive resistance device, which is characterized in that including being dielectrically separated from block, C between spiral resistive piece, insulated column, resistor disc
Type foundation ring is dielectrically separated from the fixed spiral shell stick of block；The insulated column is fixedly connected with below the c-type foundation ring；In the C
The spiral resistive piece of the top setting several layers of type foundation ring；It is arranged between the resistor disc between the spiral resistive piece absolutely
Edge spacing block；It is dielectrically separated between the resistor disc in the through-hole at the both ends of block and respectively penetrates that be dielectrically separated from the fixed spiral shell stick of block solid
Fixed, the spiral resistive piece further includes the transition plate, outer that inner ring spiral resistive piece, outer ring spiral resistive piece, inner ring connect outer ring
Circle cross connect sheet, outer ring connect the transition plate of inner ring, inner ring cross connect sheet；The outer ring spiral resistance ring plate, every spiral shell
The transition plate for connecting inner ring after several circles of capstan by outer ring connects with inner ring spiral resistive piece；The inner ring spiral resistive piece,
Connect also by the transition plate that inner ring connects outer ring with outer ring spiral resistive piece after every several circles of helical disk, in the inner ring spiral
Resistor disc is connected when intersecting by inner ring cross connect sheet；Intersected when the outer ring spiral resistive piece intersects by outer ring and is connected
Contact pin connection；A most beneath circle for outer ring spiral resistive piece is connected with the resistance strip terminal being arranged on c-type foundation ring.
Further, the c-type foundation ring further include bottom insulated column jointing, c-type foundation ring circle body, c-type foundation ring insulation every
From block；One end fixed resistance strip terminal on the circle body of c-type foundation ring, in c-type foundation ring, the lower section setting bottom insulated column of circle body is connected
Connector；In c-type foundation ring, the top setting c-type foundation ring of circle body is dielectrically separated from block；Bottom insulated column jointing and c-type foundation ring insulation every
It is arranged in a one-to-one correspondence up and down from block；And it is respectively set at the both ends that the both ends of bottom insulated column jointing and c-type foundation ring are dielectrically separated from block
Set a through-hole；The block that is dielectrically separated from is penetrated in through-hole fixes spiral shell stick；It is described that be dielectrically separated from block fixed spiral shell stick exhausted the bottom of by
Edge column jointing, c-type foundation ring, which are dielectrically separated between block and the resistor disc, is dielectrically separated from the longitudinally connected fixation of block.
Further, in the opening of the c-type foundation ring circle body, inlet wire is set in the outer ring spiral resistive on piece of the bottom
End；In the opening of the c-type foundation ring circle body, wire outlet end is set in the outer ring spiral resistive on piece of top layer.
Further, the phase sequence of the inlet wire end and the interchangeable connection power supply of the wire outlet end.
Further, the spiral resistive piece is turned around by fashioned iron.
Further, the number of plies of the spiral resistive piece is 20 layers -500 layers.
The technical problem to be solved by the present invention is in the induction reactance for guaranteeing that neutral ground inductive resistance has requirement of engineering
Under the premise of resistance value, reduces the volume of the neutral ground inductive resistance of transformer, meet engineer application needs.Of the invention
It has technical effect that using inner ring spiral resistive piece, the end to end structure of outer ring spiral resistive piece, overcomes inner ring spiral resistive
Potential difference is big between piece and outer ring spiral resistive piece, and insulate difficult technological difficulties.Meanwhile c-type foundation ring is both the one of spiral resistive
Part, and be the mounting seat of spiral resistive piece, solve pedestal due to vortex, potential position increases, between pedestal and resistor disc absolutely
The problem of edge easily punctures.The present invention is effectively reduced inductive resistance volume, realizes engineering by above-mentioned two important measures
Using.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the solderless wrapped connection structural schematic diagram of inner ring spiral resistive piece of the invention and outer ring spiral resistive piece；
Fig. 3 is c-type foundation ring structural schematic diagram of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
In conjunction with shown in attached drawing 1, attached drawing 2, a kind of transformer neutral point DC magnetic biasing inhibition inductance is provided in the present embodiment
It is dielectrically separated from that block 3, c-type foundation ring 400, to be dielectrically separated from block solid between resistor, including spiral resistive piece 200, insulated column 1, resistor disc
Determine spiral shell stick 5；It is fixedly connected with insulated column 1 in the lower section of c-type foundation ring 400, transformer neutral point DC magnetic biasing is formed and inhibits inductance electricity
Hinder the insulation of device lower part；In the spiral resistive piece 200 of the top setting several layers of c-type foundation ring 400；Spiral resistive piece 200 it
Between be arranged resistor disc between be dielectrically separated from block 3；It is dielectrically separated to respectively penetrate in the through-hole at the both ends of block 3 between resistor disc and be dielectrically separated from
The fixed spiral shell stick 5 of block is fixed, forms the main structure that transformer neutral point DC magnetic biasing inhibits inductive resistance device, above-mentioned structure
Using the end to end structure of spiral resistive piece 200, the technology hardly possible that potential difference is big, insulate difficult is overcome between spiral resistive piece 200
Point, and the mounting seat of a part and spiral resistive piece that c-type foundation ring 400 is both spiral resistive is formd, solve pedestal
Due to vortex, the problem of potential position increases, and pedestal and resistance insulation between plates easily puncture, the technology to solve further above-mentioned is asked
Topic, the spiral resistive piece 200 further include that inner ring spiral resistive piece 201, outer ring spiral resistive piece 202, inner ring connect outer ring
Transition plate 203, outer ring cross connect sheet 204, outer ring connect the transition plate 205 of inner ring, inner ring cross connect sheet 206；Outer ring spiral
Shape resistance ring plate 202, several circles of every helical disk (it is two circles in the present embodiment, can arbitrarily selects circle number in practical applications,
Mainly with vortex, the parameter selections such as potential position) connect the transition plate 205 and 201 phase of inner ring spiral resistive piece of inner ring by outer ring afterwards
It connects；Inner ring spiral resistive piece 201, every several circles of helical disk (are two circles in the present embodiment, can arbitrarily select in practical applications
Select circle number, mainly with vortex, the parameter selections such as potential position) after also by inner ring connect outer ring transition plate 203 and outer ring spiral electricity
Resistance piece 202 connects, and is connected when inner ring spiral resistive piece 201 intersects by inner ring cross connect sheet 206；In outer ring spiral resistive
It is connected when piece 202 intersects by outer ring cross connect sheet 204；A most beneath circle for outer ring spiral resistive piece 202 is with setting in c-type
Resistance strip terminal 401 on foundation ring 400 is connected.
Shown in fig. 3, c-type foundation ring 400 further includes bottom insulated column jointing 402, c-type foundation ring circle body 403, c-type
Foundation ring is dielectrically separated from block 404；One end fixed resistance strip terminal 401 on c-type foundation ring circle body 403, the circle body 403 in c-type foundation ring
Lower section be arranged bottom insulated column jointing 402；In c-type foundation ring, the top setting c-type foundation ring of circle body 403 is dielectrically separated from block 404；
Bottom insulated column jointing 402 and c-type foundation ring are dielectrically separated from about 403 block and are arranged in a one-to-one correspondence；And it is connect in bottom insulated column
A through-hole is respectively arranged in the both ends that first 402 both ends and c-type foundation ring are dielectrically separated from block 403；Penetrate that be dielectrically separated from block solid in through-hole
Determine spiral shell stick 5；It is dielectrically separated from block fixed spiral shell stick 5 and bottom insulated column jointing 404, c-type foundation ring is dielectrically separated from block 403 and resistor disc
Between be dielectrically separated from the longitudinally connected fixation of block 3.Above-mentioned 40 structure of c-type foundation ring is to guarantee to solve pedestal due to vortex, potential position
The key structure for the problem of raising, pedestal and resistance insulation between plates easily puncture.
In conjunction with shown in attached drawing 1, attached drawing 3, the opening of circle body 403 in c-type foundation ring, in the outer ring spiral resistive piece of the bottom
Inlet wire end 6 is set on 202；The opening of circle body 403 in c-type foundation ring is arranged on the outer ring spiral resistive piece 202 of top layer
Wire outlet end 5；Above-mentioned line end 6 and wire outlet end 5 are used for accessing power supply, certainly, inlet wire end 6 and wire outlet end 5
The phase sequence of interchangeable connection power supply, does not influence to use, mainly according to vortex, potential position direction selection phase sequence.
Spiral resistive piece 200 in the present embodiment is turned around by fashioned iron, and the number of plies of spiral resistive piece 200 is 20 layers-
500 layers.
As the preferred embodiment of the invention, it is obvious to a person skilled in the art that showing the present invention is not limited to above-mentioned
The details of exemplary embodiment, and without departing from the spirit or essential characteristics of the present invention, it can be with other specific
Form realizes the present invention and protection scope of the present invention.Therefore, in all respects, the embodiments should be taken as
It is exemplary, and be non-limiting, the scope of the invention being indicated by the appended claims rather than by the foregoing description, therefore purport
It is including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention.Right should not be wanted
Any appended drawing reference in asking is construed as limiting the claims involved.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of transformer neutral point DC magnetic biasing inhibits inductive resistance device, which is characterized in that including spiral resistive piece, insulation
It is dielectrically separated from block, c-type foundation ring between column, resistor disc, is dielectrically separated from the fixed spiral shell stick of block；The fixed company in lower section in the c-type foundation ring
Connect the insulated column；In the spiral resistive piece of the top setting several layers of the c-type foundation ring；In the spiral resistive piece
Between be arranged between the resistor disc and be dielectrically separated from block；It is dielectrically separated between the resistor disc in the through-hole at the both ends of block respectively
It penetrates and is dielectrically separated from the fixed spiral shell stick of block and fixes, the spiral resistive piece further includes inner ring spiral resistive piece, outer ring spiral resistive
Piece, inner ring connect the transition plate of outer ring, outer ring cross connect sheet, outer ring connect the transition plate of inner ring, inner ring cross connect sheet；Described
Outer ring spiral resistance ring plate connects the transition plate and inner ring spiral resistive piece phase of inner ring after every several circles of helical disk by outer ring
It connects；The inner ring spiral resistive piece connects the transition plate and outer ring spiral electricity of outer ring after every several circles of helical disk also by inner ring
Resistance piece connects, and is connected when the inner ring spiral resistive piece intersects by inner ring cross connect sheet；In the outer ring spiral
Resistor disc is connected when intersecting by outer ring cross connect sheet；A most beneath circle for outer ring spiral resistive piece is with setting in c-type foundation ring
On resistance strip terminal be connected.
2. a kind of transformer neutral point DC magnetic biasing as described in claim 1 inhibits inductive resistance device, which is characterized in that described
C-type foundation ring further include that bottom insulated column jointing, c-type foundation ring circle body, c-type foundation ring are dielectrically separated from block；On the circle body of c-type foundation ring
One end fixed resistance strip terminal, in c-type foundation ring circle body lower section be arranged bottom insulated column jointing；The circle body in c-type foundation ring
Top setting c-type foundation ring is dielectrically separated from block；Bottom insulated column jointing and c-type foundation ring are dielectrically separated from block, and one-to-one correspondence is set up and down
It sets；And one through-hole is respectively set at the both ends that the both ends of bottom insulated column jointing and c-type foundation ring are dielectrically separated from block；It is worn in through-hole
Enter the block that is dielectrically separated from and fixes spiral shell stick；Described is dielectrically separated from the fixed spiral shell stick of block for bottom insulated column jointing, c-type foundation ring
It is dielectrically separated between block and the resistor disc and is dielectrically separated from the longitudinally connected fixation of block.
3. a kind of transformer neutral point DC magnetic biasing as claimed in claim 2 inhibits inductive resistance device, which is characterized in that in institute
Inlet wire end is arranged in the outer ring spiral resistive on piece of the bottom in the opening for the c-type foundation ring circle body stated；At the c-type bottom
Wire outlet end is arranged in the outer ring spiral resistive on piece of top layer in the opening for enclosing circle body.
4. a kind of transformer neutral point DC magnetic biasing as claimed in claim 3 inhibits inductive resistance device, which is characterized in that described
Inlet wire end and the interchangeable connection power supply of the described wire outlet end phase sequence.
5. a kind of transformer neutral point DC magnetic biasing as described in claim 1 inhibits inductive resistance device, which is characterized in that described
Spiral resistive piece turned around by fashioned iron.
6. a kind of transformer neutral point DC magnetic biasing as described in claim 1 inhibits inductive resistance device, which is characterized in that described
Spiral resistive piece the number of plies be 20 layers -500 layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510375.5A CN110148504B (en) | 2019-06-13 | 2019-06-13 | Transformer neutral point DC magnetic bias suppression inductance resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510375.5A CN110148504B (en) | 2019-06-13 | 2019-06-13 | Transformer neutral point DC magnetic bias suppression inductance resistor |
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| Publication Number | Publication Date |
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| CN110148504A true CN110148504A (en) | 2019-08-20 |
| CN110148504B CN110148504B (en) | 2024-02-27 |
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| CN201910510375.5A Active CN110148504B (en) | 2019-06-13 | 2019-06-13 | Transformer neutral point DC magnetic bias suppression inductance resistor |
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| GB863833A (en) * | 1957-07-25 | 1961-03-29 | Elettrotecnica Chimica Italian | Improvements in or relating to electric resistors |
| SU654368A1 (en) * | 1976-09-01 | 1979-03-30 | Предприятие П/Я А-3816 | Method of coiling and securing metal strip into archimedean spiral |
| DE3722438A1 (en) * | 1986-07-08 | 1988-01-14 | Iskra Sozd Elektro Indus | Device for drying electrical resistors and other electronic components fitted with axial terminals |
| CA1261417A (en) * | 1986-09-09 | 1989-09-26 | Patrick E. Burke | High voltage, outdoor, air cooled, dynamic braking resistors and power distribution system incorporating the same |
| EP0392181A1 (en) * | 1989-04-08 | 1990-10-17 | Robert Bosch Gmbh | Glow plug |
| CN101221843A (en) * | 2007-12-07 | 2008-07-16 | 中国计量科学研究院 | Double-spiral curve AC/DC difference calculable resistor, its production method, analyzing method and application |
| CN204407114U (en) * | 2015-02-05 | 2015-06-17 | 上海华明电力设备制造有限公司 | Double-spiral structure transition resistance |
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| US20160268880A1 (en) * | 2013-09-26 | 2016-09-15 | Siemens Aktiengesellschaft | Resistance module for increasing runup torque for a rotor of an electric machine comprising a rotor winding |
| CN205723039U (en) * | 2016-04-18 | 2016-11-23 | 上海久能机电制造有限公司 | A kind of novel cylinder helical inductor resistance unit |
| CN106710833A (en) * | 2017-01-16 | 2017-05-24 | 山东哈大电气有限公司 | Resistor type electric reactor and manufacturing method thereof |
| CN206574552U (en) * | 2017-03-27 | 2017-10-20 | 深圳市百亨电子有限公司 | A kind of noninductive wire wound resistor |
| CN208173383U (en) * | 2018-03-14 | 2018-11-30 | 东莞光顺电子有限公司 | A kind of poor common mode inductance integration filter inductor of adjustable impedance |
| CN209766158U (en) * | 2019-06-13 | 2019-12-10 | 上海久能机电制造有限公司 | Transformer neutral point direct current magnetic biasing suppression inductance resistor |
-
2019
- 2019-06-13 CN CN201910510375.5A patent/CN110148504B/en active Active
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|---|---|---|---|---|
| GB863833A (en) * | 1957-07-25 | 1961-03-29 | Elettrotecnica Chimica Italian | Improvements in or relating to electric resistors |
| SU654368A1 (en) * | 1976-09-01 | 1979-03-30 | Предприятие П/Я А-3816 | Method of coiling and securing metal strip into archimedean spiral |
| DE3722438A1 (en) * | 1986-07-08 | 1988-01-14 | Iskra Sozd Elektro Indus | Device for drying electrical resistors and other electronic components fitted with axial terminals |
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| EP0392181A1 (en) * | 1989-04-08 | 1990-10-17 | Robert Bosch Gmbh | Glow plug |
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|---|---|
| CN110148504B (en) | 2024-02-27 |
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