CN107731500A - A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit - Google Patents
A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit Download PDFInfo
- Publication number
- CN107731500A CN107731500A CN201710983464.2A CN201710983464A CN107731500A CN 107731500 A CN107731500 A CN 107731500A CN 201710983464 A CN201710983464 A CN 201710983464A CN 107731500 A CN107731500 A CN 107731500A
- Authority
- CN
- China
- Prior art keywords
- phase
- primary winding
- resonance
- secondary coil
- main unit
- 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.)
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Links
- 230000001629 suppression Effects 0.000 title claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 41
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003822 epoxy resin Substances 0.000 claims abstract description 12
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 12
- 230000001939 inductive effect Effects 0.000 claims abstract description 6
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/38—Instruments transformers for polyphase ac
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/04—Leading of conductors or axles through casings, e.g. for tap-changing arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit, including R shaped iron cores, three-phase primary winding and three-phase secondary coil.Three-phase primary winding and three-phase secondary coil use star-connection mode around being located on R shaped iron cores, and neutral point is grounded through inductive coil.Three leads of three-phase primary winding are connected to a fuse.Secondary wiring terminals whole concentrated setting in secondary terminals terminal box, by stuffing-box drawn by the secondary cable of extraction.Poured into a mould using epoxide resin vacuum integral in outside.The present invention can meet the technical requirements that state's net merges to ring main unit first and second.It can particularly remain to effectively suppress various resonance conditions, ensure the high accuracy of metering, ensure the reliability service of electrical equipment when the complicated change of power network, resonance are strong.
Description
Technical field
It is mutual more particularly to a kind of suppression mode of resonance three-phase voltage that can be docked with ring main unit the present invention relates to a kind of transformer
Sensor.The technical requirements that state's net merges to ring main unit first and second can be met.
Background technology
There is the situations such as harmonic wave and three-phase load unbalance in national grid, particularly urban distribution network, to 10kV in operation
Metering, the monitoring of ring main unit bring difficulty.The voltage transformer used at present can not preferably meet state's net to ring main unit one, two
The technical requirements of secondary fusion, it is poor to there is harmonic wave adaptability in operation to power network.Therefore, it is necessary to which a kind of measure to state's net
During with monitoring, adapt under the complicated situation of change of power network, can ensure to measure, and can effectively suppress various resonance, ensure
The threephase potential transformer of the reliability service of electrical equipment.
The technical scheme of use is：
A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit, including iron core, three-phase primary winding and three-phase two
Secondary coil, it is characterised in that：
The iron core is R shaped iron cores, and the open circuit loss and no-load current for making iron core are greatly reduced, and improves product carrying load ability.
Three-phase primary winding and three secondary coils use star-connection mode around being located on R shaped iron cores, and neutral point is through inductive coil
Ground connection.Three leads of three-phase primary winding are connected by three fuse mounting seats and three fuses respectively
Connect, a fuse is installed in corresponding fuse mounting seat.Fuse peace of lead and three-phase of three-phase primary winding
Dress seat is individually enclosed in three elbow-type epoxy resins insulation posts.Three fuses pass through three elbow-type epoxy resin respectively
Mounting hole on insulated column is inserted into three fuse mounting seats（User provides）.
Secondary wiring terminals are all installed concentratedly in secondary terminals terminal box, can carry out lead sealing with capping, extraction
Secondary cable is drawn by stuffing-box.Integral, achievable integral replacing, convenient installation are poured into a mould using epoxide resin vacuum in outside
Inspection.Wherein：
First winding is used with layer segmentation winding mode around being located on R shaped iron cores.This wiring method can reduce stray capacitance point
Cloth etc., make product partial discharge small, service life length.It is respectively arranged with the winding of three-phase primary winding and three-phase secondary coil and presses
Ring, it is uniformly distributed field strength.
For the present invention when using running, it is (disconnected to protect that device is once melted in the interior insertion of fuse mounting seat of transformer three-phase A, B, C
Danger, user provide）, fusing is insured to be connected by primary winding fuse base with first winding, and first winding is by iron core two
Secondary winding produces voltage signal and electric 220V power supplies.
Type of device：
Indoor technical parameter：
Voltage ratio：10√3/0.1/√3/0.22/√3/0.1kV
Accuracy class：0.2/3/6P
Rated output capacity：30/500/100VA
Frequency：50/60Hz
Advantages of the present invention：
The present invention is used for 10kV ring main units.Secondary coil of the present invention can provide metering, monitoring and power supply winding, can meet state
The technical requirements that net merges to ring main unit first and second.It can particularly be remained to effectively when the complicated change of power network, resonance are strong
Suppress various resonance conditions, ensure the high accuracy of metering, ensure the reliability service of electrical equipment.
Brief description of the drawings
A kind of embodiment that Fig. 1 is the present invention watches figure attentively.
Fig. 2 is Fig. 1 top view.
Fig. 3 is Fig. 1 right view.
Embodiment
A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit, including R shaped iron cores 7, three-phase primary winding 4
With three-phase secondary coil 6, it is characterised in that：
Three-phase secondary coil 6 is rich to be located on R shaped iron cores 7, and three-phase primary winding 4 is through main insulating layer 5 around being located at three-phase secondary coil 6
On, it is the star row mode of connection.First winding is used with layer segmentation winding mode around being located on three-phase secondary coil 6.Three-phase is once
Coil neutral point 2 is grounded through inductive coil 10.Wherein：Primary winding N-terminal earth point 1, the primary winding O of three-phase primary winding 4
The lead in termination place 2 is individually enclosed in two king-posts 13.
Three leads of three primary windings 4 are respectively through three fuse mounting seats 3 and three fuses 11
Connection, three leads of three-phase primary winding 4 and three fuse mounting seats 11 are individually enclosed in band and once melted
In the elbow-type epoxy resins insulation post 14 of disconnected device jack.
Grading ring 15 is respectively arranged with the winding of three primary windings 4 and three-phase secondary coil 6.
R shaped iron cores 7, three-phase primary winding 4, three-phase secondary coil 6 and inductive coil 10 are integral by poured with epoxy resin
Structure, epoxy resin poured body are housing 10, and housing 10 is the whole of one-time cast-forming with elbow-type epoxy resins insulation post 14
Body structure.The outer wall bottom of housing 10 is fixed with secondary terminals terminal box 8.Secondary wiring terminals 9 are provided entirely in secondary terminals and connect
In 8 in line box, three-phase secondary coil 6 according to measurement and monitoring etc. use set lead respectively with secondary terminals terminal box 8
Secondary wiring terminals 9 connect.
Claims (3)
1. a kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit, including R shaped iron cores (7), three-phase primary winding
And three-phase secondary coil (6) (4), it is characterised in that：
Three-phase secondary coil (6) is rich to be located on R shaped iron cores (7), and three-phase primary winding (4) is through main insulating layer (5) around being located at three-phase
It is the star row mode of connection on secondary coil (6)；Three-phase primary winding neutral point (2) is grounded through inductive coil (10)；Wherein：Three
Primary winding (N) termination place (1) of phase primary winding (4), the lead of primary winding (O) termination place (2) are individually enclosed in
In two king-posts (13)；Three leads of three-phase primary winding (4) are respectively through three fuse mounting seats (3) and three one
Secondary fuse (11) connection, three leads of three-phase primary winding (4) and three fuse mounting seats (11) are respectively
It is encapsulated in the elbow-type epoxy resins insulation post (14) of band once fuse jack；
R shaped iron cores (7), three-phase primary winding (4), three-phase secondary coil (6) and inductive coil (10) by poured with epoxy resin into
Overall structure, epoxy resin poured body are housing (10), and housing (10) is once to pour with elbow-type epoxy resins insulation post (14)
The overall structure of injection forming；Housing (10) outer wall bottom is fixed with secondary terminals terminal box (8), and secondary wiring terminals (9) are all
It is arranged in secondary terminals terminal box in (8), the lead difference that three-phase secondary coil (6) is set according to the use such as measurement and monitoring
It is connected with the secondary wiring terminals 9 in secondary terminals terminal box 8.
2. a kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit according to claim 1, its feature exist
In：
Grading ring (15) is respectively arranged with the winding of three-phase primary winding (4) and three-phase secondary coil (6).
3. a kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit according to claim 1, its feature exist
In：
First winding is used with layer segmentation winding mode around being located on three-phase secondary coil (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710983464.2A CN107731500A (en) | 2017-10-20 | 2017-10-20 | A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710983464.2A CN107731500A (en) | 2017-10-20 | 2017-10-20 | A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107731500A true CN107731500A (en) | 2018-02-23 |
Family
ID=61212952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710983464.2A Withdrawn CN107731500A (en) | 2017-10-20 | 2017-10-20 | A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107731500A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962574A (en) * | 2018-06-04 | 2018-12-07 | 湖北大二互科技股份有限公司 | Modularization combined transformers for metering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226974A (en) * | 2011-03-28 | 2011-10-26 | 江西赣电电气有限公司 | Voltage transformer capable of eliminating ferromagnetic resonance |
| CN202758727U (en) * | 2012-07-31 | 2013-02-27 | 大连第二互感器集团有限公司 | Anti-resonance voltage transformer |
| CN204558235U (en) * | 2015-05-07 | 2015-08-12 | 湖北大二互科技有限公司 | A kind of resistance mode of resonance voltage transformer |
| CN106683862A (en) * | 2017-01-23 | 2017-05-17 | 浙江天际互感器有限公司 | Voltage transformer with elbow plug |
| CN207663925U (en) * | 2017-10-20 | 2018-07-27 | 湖北大二互科技股份有限公司 | A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit |
-
2017
- 2017-10-20 CN CN201710983464.2A patent/CN107731500A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226974A (en) * | 2011-03-28 | 2011-10-26 | 江西赣电电气有限公司 | Voltage transformer capable of eliminating ferromagnetic resonance |
| CN202758727U (en) * | 2012-07-31 | 2013-02-27 | 大连第二互感器集团有限公司 | Anti-resonance voltage transformer |
| CN204558235U (en) * | 2015-05-07 | 2015-08-12 | 湖北大二互科技有限公司 | A kind of resistance mode of resonance voltage transformer |
| CN106683862A (en) * | 2017-01-23 | 2017-05-17 | 浙江天际互感器有限公司 | Voltage transformer with elbow plug |
| CN207663925U (en) * | 2017-10-20 | 2018-07-27 | 湖北大二互科技股份有限公司 | A kind of suppression mode of resonance threephase potential transformer that can be docked with ring main unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962574A (en) * | 2018-06-04 | 2018-12-07 | 湖北大二互科技股份有限公司 | Modularization combined transformers for metering |
| CN108962574B (en) * | 2018-06-04 | 2023-10-03 | 湖北大二互科技股份有限公司 | Modular combined transformer for metering |
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| 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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180223 |
|
| WW01 | Invention patent application withdrawn after publication |