CN208834894U - Combination transformer - Google Patents
Combination transformer Download PDFInfo
- Publication number
- CN208834894U CN208834894U CN201821312720.1U CN201821312720U CN208834894U CN 208834894 U CN208834894 U CN 208834894U CN 201821312720 U CN201821312720 U CN 201821312720U CN 208834894 U CN208834894 U CN 208834894U
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- CN
- China
- Prior art keywords
- voltage
- current
- transformer
- primary coil
- annular
- 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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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000009422 external insulation Methods 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000003712 anti-aging effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920000260 silastic Polymers 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- KHDSWONFYIAAPE-UHFFFAOYSA-N silicon sulfide Chemical compound S=[Si]=S KHDSWONFYIAAPE-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to field of electrical equipment, provide a kind of combination transformer, comprising: three the same as the voltage transformer of no-load voltage ratio and three current transformers with no-load voltage ratio；Three voltage transformers with no-load voltage ratio form Y-shaped connection, and A, B, C phase of voltage transformer are contacted a current transformer respectively；Current transformer includes: electric current primary coil and current ferric core；Current ferric core is annular, and electric current secondary coil is wound on current ferric core；Electric current primary coil passes through the current ferric core of annular；Voltage transformer includes: voltage primary coil and voltage iron core；The voltage iron core is annular, and voltage secondary coil is wound on voltage iron core；Voltage primary coil passes through the voltage iron core of annular；The voltage primary coil input terminal of voltage transformer is connected respectively on the electric current primary coil of corresponding current mutual inductor.The utility model can be realized high-precision measuring, realizes limiting circuitry resonance, solves the problems, such as route three-phase imbalance.
Description
Technical field
The utility model relates to field of electrical equipment more particularly to a kind of combination transformers.
Background technique
Mainly oil immersion and the SF6 gas of pre-payment mutual inductor early stage.The maintenance of oil product is more troublesome.Often need
The lacquer painting of shell is repaired, oil-filled, detection gas micro-water content, maintenance and annual test are comparatively laborious.SF6 gas is to atmosphere pollution
There is certain harmfulness.Outdoor poured with epoxy resin is introduced from foreign countries afterwards, is mitigated in terms of maintenance very much.But long operational time
, since the ultraviolet light of the sun irradiates, the surface of mutual inductor generates differentiation, ionization, and resin aging causes insulation performance to destroy.
It is also bad that three-phase imbalance problem, measuring accuracy often occurs on the line in current combination transformer.
Utility model content
The utility model mainly solves existing combination transformer and three-phase imbalance, measuring accuracy often occurs not on the line
The technical problems such as good, propose a kind of combination transformer, can achieve the effect that three-phase line single-phase measurement, and measuring accuracy is fine,
Meanwhile extexine is using high temperature vulcanized HTV silastic material, has an anti-pollution, uvioresistant, it is anti-aging, hydrophobicity is good,
The characteristics of anti-pollution.
The utility model provides a kind of combination transformer, comprising: three with the voltage transformer of no-load voltage ratio and three with change
The current transformer of ratio；
Three voltage transformers with no-load voltage ratio form Y-shaped connection, and A, B, C phase of the voltage transformer are contacted one respectively
The current transformer；Three pour into an integrated entity with the voltage transformer of no-load voltage ratio and three current transformers with no-load voltage ratio, are formed
Pour mass (1)；
The current transformer includes: electric current primary coil (3) and current ferric core (4)；The current ferric core (4) is ring
Shape, and electric current secondary coil is wound on current ferric core (4)；Electric current primary coil (3) passes through the current ferric core (4) of annular；
The voltage transformer includes: voltage primary coil (5) and voltage iron core (6)；The voltage iron core (6) is ring
Shape, and voltage secondary coil is wound on voltage iron core (6)；Voltage primary coil (5) passes through the voltage iron core (6) of annular；
Voltage primary coil (5) input terminal of voltage transformer is connected respectively to the electric current primary line of corresponding current mutual inductor
It encloses on (3)；Voltage primary coil (5) output end of three voltage transformers links together, and forms a N-terminal, one time N-terminal is logical
Cross high-tension resistive ground connection.
Preferably, three pass through poured with epoxy resin with the voltage transformer of no-load voltage ratio and three current transformers with no-load voltage ratio
Integrally.
Preferably, the pour mass (1) does external insulation using seamless silicon rubber outside.
Preferably, the pour mass (1) draws a terminal (2) and secondary terminals (7) respectively.
Preferably, a terminal (2) the series current primary coil (3), shunt voltage primary coil (5).
A kind of combination transformer provided by the utility model achievees the effect that three-phase line single-phase measurement, and measuring accuracy is very
It is good, it has the advantage that compared with prior art
1, current transformer uses ultramicro-crystal alloy measuring accuracy to can achieve 0.2S grades in the utility model, and error connects
It is bordering on zero, voltage transformer can achieve 0.2 grade.The utility model can be realized high-precision measuring.
2, the utility model is grounded by a N-terminal by high-tension resistive harmonic elimination, it is suppressed that route resonance solves route
The problem of three-phase imbalance.
3, outside pour mass using high temperature vulcanized HTV silastic material, there is anti-pollution, uvioresistant, anti-aging,
The characteristics of hydrophobicity is good, anti-pollution.
Detailed description of the invention
Fig. 1 is the main view of combination transformer provided by the utility model；
Fig. 2 is the side view of combination transformer provided by the utility model；
Fig. 3 is the top view of combination transformer provided by the utility model.
Appended drawing reference: 1, pour mass；2, a terminal；3, electric current primary coil；4, current ferric core；5, voltage primary line
Circle；6, voltage iron core；7, secondary terminals.
Specific embodiment
The technical issues of to solve the utility model, the technical solution of use and the technical effect that reaches are clearer,
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that described herein
Specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It also should be noted that being
Convenient for description, part relevant to the utility model is illustrated only rather than full content in attached drawing.
Fig. 1 is the main view of combination transformer provided by the utility model；Fig. 2 is combination mutual inductance provided by the utility model
The side view of device；Fig. 3 is the top view of combination transformer provided by the utility model.As shown in Figure 1, 2, 3, the utility model
The combination transformer that embodiment provides, comprising: three the same as the voltage transformer of no-load voltage ratio and three current transformers with no-load voltage ratio.
Three voltage transformers with no-load voltage ratio form Y-shaped connection, and A, B, C phase of the voltage transformer are contacted one respectively
The current transformer.Three pass through low temperature resistant epoxy with the voltage transformer of no-load voltage ratio and three current transformers with no-load voltage ratio
Resin-cast is integral, forms pour mass 1.The utility model does external insulation using seamless silicon rubber outside pour mass 1.
The current transformer includes: electric current primary coil 3 and current ferric core 4；The current ferric core 4 is annular, and electric
It flows and winds electric current secondary coil on iron core 4；Electric current primary coil 3 passes through the current ferric core 4 of annular.
The voltage transformer includes: voltage primary coil 5 and voltage iron core 6；The voltage iron core 6 is annular, and electric
Voltage secondary coil is wound on weight core 6；Voltage primary coil 5 passes through the voltage iron core 6 of annular.The voltage one of voltage transformer
5 input terminal of secondary coil is connected respectively on the electric current primary coil 3 of corresponding current mutual inductor.The voltage one of three voltage transformers
5 output end of secondary coil links together, and forms a N-terminal, one time N-terminal is grounded by high-tension resistive harmonic elimination.
Pour mass 1 provided by the utility model draws a terminal 2 and secondary terminals 7,2 series current of terminal respectively
Primary coil 3, shunt voltage primary coil 5；Terminal 2 is used to connect house lead in and connection user's line；Secondary terminals 7 are used for
Measuring instrument is connected, realizes metering electric charge.Wherein, a terminal 2 uses silver-plated process, being capable of anti-oxidant reduction contact resistance.
The utility model is a kind of novel outdoor high-voltage electric energy metering device, there is three voltage transformer groups with no-load voltage ratio
At Y-shaped connection, and A, B, C phase are contacted a current transformer with no-load voltage ratio respectively.Voltage, current combined transformer are furnished with high pressure
Resistance eutral grounding, it when route three-phase imbalance or is that reclosing is excessively electric that high-tension resistive, which just plays ground connection, when positive production is run
Pressure, is able to suppress high pressure resonance；When once shoving, high-voltage earthing resistance will work, and play the work of damping current
With avoiding burning mutual inductor, protection circuit safety.
The combination transformer of the utility model does electrical energy measurement or relay protection suitable for 10KV and following power circuit,
Grid line loss is examined, platform distinguishes section examination.The utility model has the following characteristics that
1, current transformer uses ultramicro-crystal alloy measuring accuracy to can achieve 0.2S grades in the utility model, and error connects
It is bordering on zero, even if also can achieve enough measuring accuracies in the case where power load very little.In addition, measure winding uses
Polytropic ratio structure.The needs of power load growth can be met, voltage transformer can achieve 0.2 grade.The utility model can be real
Existing high-precision measuring.
2, the utility model does external insulation using seamless HTV high-temperature silicon disulfide rubber, has resistance to electric arc, uvioresistant,
The characteristics of resistance to filthy and long service life.Silicon rubber also has hydrophobicity, can long-term non-maintaining operation, the outdoor resin fortune avoided
The feature of row time long UV resistant difference.Oil immersion type mutual-inductor needs the trouble of long term maintenance.Such mutual inductor uses polyurethane
Interior insulation is done, effectively improves the resistance to low temperature of product, reachable -45-+45 degrees Celsius of ambient temperature range when normal operation
Between.
3, since a traditional N-terminal is earth-free, it often will appear the unbalanced phenomenon of route in route.Especially route
Voltage unbalance, such case is more serious, and line balance problem is not easily solved, if N-terminal is grounded, the problem of line balance
It solves, but route overvoltage mutual inductor occurs and do not have resonance-eliminating effect, is easy to burn mutual inductor.This reality in response to this
It is grounded by a N-terminal by high-tension resistive harmonic elimination with novel, solves the problems, such as route three-phase imbalance, while inhibiting line
Road resonance.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is modified the technical solutions described in the foregoing embodiments, or to some or all of the technical features
It is equivalently replaced, the scope of the technical solutions of the embodiments of the utility model that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. a kind of combination transformer characterized by comprising three the same as the voltage transformer of no-load voltage ratio and three electric currents with no-load voltage ratio
Mutual inductor；
Three voltage transformers with no-load voltage ratio form Y-shaped connection, and A, B, C phase of the voltage transformer are contacted respectively described in one
Current transformer；Three pour into an integrated entity with the voltage transformer of no-load voltage ratio and three current transformers with no-load voltage ratio, form casting
Body (1)；
The current transformer includes: electric current primary coil (3) and current ferric core (4)；The current ferric core (4) is annular, and
Electric current secondary coil is wound on current ferric core (4)；Electric current primary coil (3) passes through the current ferric core (4) of annular；
The voltage transformer includes: voltage primary coil (5) and voltage iron core (6)；The voltage iron core (6) is annular, and
Voltage secondary coil is wound on voltage iron core (6)；Voltage primary coil (5) passes through the voltage iron core (6) of annular；
Voltage primary coil (5) input terminal of voltage transformer is connected respectively to the electric current primary coil of corresponding current mutual inductor
(3) on；Voltage primary coil (5) output end of three voltage transformers links together, and forms a N-terminal, one time N-terminal passes through
High-tension resistive ground connection.
2. combination transformer according to claim 1, which is characterized in that three same with the voltage transformer of no-load voltage ratio and three
The current transformer of no-load voltage ratio is integral by poured with epoxy resin.
3. combination transformer according to claim 1, which is characterized in that the pour mass (1) uses seamless silicon rubber outside
Glue does external insulation.
4. combination transformer according to claim 1, which is characterized in that the pour mass (1) draws a terminal respectively
(2) and secondary terminals (7).
5. combination transformer according to claim 4, which is characterized in that a terminal (2) the series current primary line
Enclose (3), shunt voltage primary coil (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821312720.1U CN208834894U (en) | 2018-08-15 | 2018-08-15 | Combination transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821312720.1U CN208834894U (en) | 2018-08-15 | 2018-08-15 | Combination transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208834894U true CN208834894U (en) | 2019-05-07 |
Family
ID=66309189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821312720.1U Expired - Fee Related CN208834894U (en) | 2018-08-15 | 2018-08-15 | Combination transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208834894U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571034A (en) * | 2019-09-12 | 2019-12-13 | 湖北大二互科技股份有限公司 | Three-phase current transformer |
-
2018
- 2018-08-15 CN CN201821312720.1U patent/CN208834894U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571034A (en) * | 2019-09-12 | 2019-12-13 | 湖北大二互科技股份有限公司 | Three-phase current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190507 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |