CN206618792U - A kind of multi-function electronic current-voltage transformer - Google Patents
A kind of multi-function electronic current-voltage transformer Download PDFInfo
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- CN206618792U CN206618792U CN201720177448.XU CN201720177448U CN206618792U CN 206618792 U CN206618792 U CN 206618792U CN 201720177448 U CN201720177448 U CN 201720177448U CN 206618792 U CN206618792 U CN 206618792U
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- voltage
- current
- mutual inductor
- transformer
- divider
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Abstract
The utility model is related to transformer and manufactures and designs field, particularly a kind of multi-function electronic current-voltage transformer.Single-phase and zero sequence current mutual inductor including being arranged at top, with the single-phase and zero sequential potential transformer of bottom, each electronic current mutual inductor includes being arranged in parallel precision resister on mutual inductor coil and electric current secondary singal output lead, electric current secondary singal output lead；Each electronic type voltage transformer includes high-voltage bleeder, and divider earth terminal is connected with voltage secondary singal output lead；The through hole passed through for the conductive metal pipe is provided with the middle of the iron core of mutual inductor coil, conductive metal pipe is conductively connected with divider high-pressure side by being connected conductor；Electrically insulating silicone rubber is filled at multi-function electronic current-voltage transformer internal voids.This product uses all-silicon rubber die casting dispensable mould molding integral structure, the problem of efficiently solving conventional epoxies product cold cracking, and has excellent insulating properties, superpower resistance to voltage levels.
Description
Technical field
The utility model is related to transformer technical field, more particularly to a kind of multi-function electronic current-voltage transformer.
Background technology
Transformer is measurement, monitoring, the equipment of relay protection in power system, is widely used in outdoor high-voltage vacuum and breaks
Road device.Because power system is improved constantly in terms of monitoring, control and protection to automation and intelligentized requirement, electronic type
Transformer effectively overcomes the shortcoming of conventional electromagnetic transformer, with small volume, lightweight, transient performance it is good, without ferromagnetic humorous
Shake, without magnetic saturation phenomenon, excellent insulating properties the advantages of, be adapted to electric power digital, intelligent and networking
Need.
At present, middle pressure 10kV electronic current mutual inductors, electronic type voltage transformer belong to stand-alone product, product peace mostly
Fill comparatively laborious, cost of manufacture is higher, and the electronic mutual inductor performance difference occurred in market is larger.In the prior art
Current Voltage combination transformer through having, generally internal to use epoxy resin as insulation, outside is entered with one layer of silicon rubber again
Row cladding, occurs cracking damage phenomenon, it is impossible to use in high and cold, high altitude localities in more than subzero 20 degree, and manufacturing procedure is multiple
Miscellaneous, process-cycle length, cost are high.
Utility model content
It is not enough for more than, the multi-function electronic current-voltage transformer that the utility model is provided, by electronic current
Transformer and electronic type voltage transformer integrated design, have two kinds of functions of Current Voltage concurrently, efficiently solve problem above.
The technical solution of the utility model is：
A kind of multi-function electronic current-voltage transformer, includes electronic current mutual inductor and the electronic type electricity of integral type
Press transformer, it is characterised in that the electronic current mutual inductor is two, respectively measure or protect and use monophase current mutual inductance
Device and zero sequence current mutual inductor, are arranged at top and are fixedly installed on conductive metal pipe, each electronic current mutual inductor bag
Include mutual inductor coil and the electric current secondary singal output lead drawn from mutual inductor coil, the electric current secondary singal output lead
On be arranged in parallel precision resister；The electronic type voltage transformer be two, respectively measurement single-phase potential transformer with
Zero sequential potential transformer, is arranged at bottom, and each electronic type voltage transformer includes high-voltage bleeder, and two high-voltage bleeders are simultaneously
Connection is set, and the high-voltage bleeder is divider high-pressure side, one end away from mutual inductor coil close to one end of mutual inductor coil
For divider earth terminal, the divider earth terminal is connected with voltage secondary singal output lead；The iron of the mutual inductor coil
The through hole passed through for the conductive metal pipe, the conductive metal pipe and the perpendicular structure of high-voltage bleeder are provided with the middle of core,
Conductive metal pipe is conductively connected with divider high-pressure side by being connected conductor；In the multi-function electronic current-voltage transformer
Portion gap fills electrically insulating silicone rubber, and lower end is connected with fairlead, the secondary letter of electric current secondary singal output lead and voltage
Number output lead is drawn through fairlead.
High-voltage bleeder and electric current the secondary singal output lead is parallel construction, and distance between the two is 2-
60mm, preferably 10-30mm.
The connection conductor is copper conductor, and the conductive connection manner is that conductive metal pipe welding copper conductor is connected to partial pressure
Device high-pressure side, or, copper conductor, which is wrapped on conductive metal pipe, is connected to divider high-pressure side.
The connection conductor is stud or bolt or non-bolt metallic rod, and the conductive connection manner is conducting metal
Pipe is welded or crimping connection conductor, is connected to divider high-pressure side.
The current-voltage transformer lower end sets ground connection barrier metal cover, and the ground connection barrier metal cover is by being grounded spiral shell
Bolt is connected with divider earth terminal.
The mutual inductor coil is minicrystal iron core coil or silicon steel coil or Rogowski coil.
The high-voltage bleeder is resitstance voltage divider or capacitive divider or RC divider.
The fairlead is stainless steel tube.
The electronic current-voltage combination transformer that the utility model is provided, with small volume, low manufacture cost, product
The advantages of installing simple；And this product uses all-silicon rubber die casting dispensable mould molding integral structure, efficiently solves traditional ring
The problem of oxygen tree fat prod cold cracking, and with excellent insulating properties, superpower resistance to voltage levels, excellent partial discharge and standard
True measurement accuracy.
Brief description of the drawings
Fig. 1 is that the utility model multi-function electronic electric current presses transformer structural front view；
Fig. 2 is Fig. 1 along line B-B schematic cross-section.
Embodiment
The technique effect of design of the present utility model, concrete structure and generation is made furtherly below with reference to accompanying drawing
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Fig. 1 and Fig. 2 is embodiment one of the present utility model and embodiment two.
Embodiment one, with reference to Fig. 1 and Fig. 2, multi-function electronic current-voltage transformer is the electronic current of integral type
Transformer and electronic type voltage transformer, electronic current mutual inductor are arranged at top, are phase current mutual inductor and zero-sequence current
The combination of transformer, wherein phase current mutual inductor are used to measuring or protecting phase current, and zero sequence current mutual inductor is used to measure zero sequence
Electric current.The electric current secondary singal output drawn respectively including two Roche mutual inductor coils 11 and from two mutual inductor coils 11 is drawn
Precision resister 14 is arranged in parallel respectively on line 12, two electric current secondary singals output lead 12, and secondary current is exported
It is converted into voltage output.
Electronic type voltage transformer is arranged at bottom, there is two, respectively the phase voltage transformer for measuring phase voltage
With the zero sequential potential transformer for measuring residual voltage, include the RC divider 21 of two parallel arrangements, the capacitance-resistance point
Depressor 21 is divider high-pressure side 211 close to one end of mutual inductor coil 11, and one end away from mutual inductor coil 11 is divider
Earth terminal 212, the divider earth terminal 212 is connected with voltage secondary singal output lead 213；Two Hes of RC divider 21
Electric current secondary singal output lead 12 is parallel construction, and distance between the two is 20mm.
Multi-function electronic current-voltage transformer is using a punching bus-type structure, and Primary Conductor is also cross two
The hollow conductive metal pipe 3 of the individual central through-hole 13 of mutual inductor coil 11, the conductive metal pipe 3 and two capacitive dividers 21
Perpendicular structure, conductive metal pipe 3 directly welds stud 32, is connected with divider high-pressure side 211 and conducts electric high pressure；Institute
Filling electrically insulating silicone rubber 33 at multi-function electronic current-voltage transformer internal voids is stated, lower end is connected with stainless steel tube 34,
The electric current secondary singal output lead 12 and voltage secondary singal output lead 213 are drawn through the hole of stainless steel tube 34.
Multi-function electronic current-voltage transformer lower end sets ground connection barrier metal cover 22, the ground connection barrier metal cover
22 are connected by earth stud 23 with divider earth terminal 212.
Embodiment two, referring still to Fig. 1 and Fig. 2, multi-function electronic current-voltage transformer is the electronic type of integral type
Current transformer and electronic type voltage transformer, electronic current mutual inductor are arranged at top, are phase current mutual inductor and zero sequence
The combination of current transformer, wherein phase current mutual inductor are used to measuring or protecting phase current, and zero sequence current mutual inductor is used to measure
Zero-sequence current.Including two minicrystal iron core mutual inductor coils 11 and the secondary letter of the electric current drawn respectively from two mutual inductor coils 11
Precision resister 14 is arranged in parallel respectively on number output lead 12, two electric current secondary singals output lead 12, will be secondary
Electric current output is converted into voltage output.
Electronic type voltage transformer is arranged at bottom, there is two, respectively the phase voltage transformer for measuring phase voltage
With the zero sequential potential transformer for measuring residual voltage, include the resitstance voltage divider 21 of two parallel arrangements, the resistance point
Depressor 21 is divider high-pressure side 211 close to one end of mutual inductor coil 11, and one end away from mutual inductor coil 11 is divider
Earth terminal 212, the divider earth terminal 212 is connected with voltage secondary singal output lead 213；Two Hes of resitstance voltage divider 21
Electric current secondary singal output lead 12 is parallel construction, and distance between the two is 10mm.
Multi-function electronic current-voltage transformer is using a punching bus-type structure, and Primary Conductor is also cross two
The hollow conductive metal pipe 3 of the individual central through-hole 13 of mutual inductor coil 11, the conductive metal pipe 3 and two capacitive dividers 21
Copper conductor 32 is wound on perpendicular structure, conductive metal pipe 3, is connected with divider high-pressure side 211 and conducts electric high pressure；It is described many
Electrically insulating silicone rubber 33 is filled at function electronic current voltage transformer internal voids, lower end is connected with stainless steel tube 34, described
Electric current secondary singal output lead 12 and voltage secondary singal output lead 213 are drawn through stainless steel tube 34.
Multi-function electronic current-voltage transformer lower end sets ground connection barrier metal cover 22, the ground connection barrier metal cover
22 are connected by earth stud 23 with divider earth terminal 212.
Electronic current voltage transformer of the present utility model uses all-silicon rubber die casting disposal molding monolithic construction,
With advantages below：
1）Possess good low temperature resistivity energy, solve epoxy resin traditional product cold cracking is utilized in industry well
Problem, can meet and be used in -45 degrees Celsius ~ 80 degree celsius temperature intervals, not aging is not ftractureed, can be in various severe rings
Under border, such as high and cold, high altitude localities is normally used, and security and service life are greatly improved.
2）Excellent insulating property, with excellent partial discharge performance, partial discharge quantity is less than 20PC or 14.4KV under 8.3KV
Lower partial discharge quantity is less than 50PC.
3）With superpower resistance to voltage levels, industrial frequency withstand voltage is up to 48-56KV, hence it is evident that higher than national standard.
Disclosed above is only embodiment of the present utility model, and still, the utility model is not limited to this, any ability
What the technical staff in domain can think change should all fall into protection domain of the present utility model.
Claims (9)
1. a kind of multi-function electronic current-voltage transformer, includes the electronic current mutual inductor and electronic type voltage of integral type
Transformer, it is characterised in that the electronic current mutual inductor is two, respectively measurement or protection single-phase current transformer
And zero sequence current mutual inductor, it is arranged at top and while is fixedly installed in conductive metal pipe（3）On, each electronic current mutual inductance
Device includes mutual inductor coil（11）With from mutual inductor coil（11）The electric current secondary singal output lead of extraction（12）, the electric current
Secondary singal output lead（12）On be arranged in parallel precision resister（14）；The electronic type voltage transformer is two, respectively
For measurement single-phase potential transformer and zero sequential potential transformer, bottom is arranged at, each electronic type voltage transformer includes height
Press divider（21）, two high-voltage bleeders（21）It is arranged in parallel, the high-voltage bleeder（21）Close to mutual inductor coil（11）
One end be divider high-pressure side（211）, away from mutual inductor coil（11）One end be divider earth terminal（212）, described point
Depressor earth terminal（212）It is connected with voltage secondary singal output lead（213）；The mutual inductor coil（11）Iron core in the middle of set
Have for the conductive metal pipe（3）The through hole passed through（13）, the conductive metal pipe（3）With high-voltage bleeder（21）It is perpendicular
Structure, conductive metal pipe（3）With divider high-pressure side（211）By connecting conductor（32）It is conductively connected；The multifunction electronic
Electrically insulating silicone rubber is filled at formula current-voltage transformer internal voids（33）, lower end and fairlead（34）Connection, the electric current two
Secondary signal output lead（12）With voltage secondary singal output lead（213）Through fairlead（34）Draw in hole.
2. multi-function electronic current-voltage transformer as claimed in claim 1, it is characterised in that the high-voltage bleeder
（21）With electric current secondary singal output lead（12）For parallel construction, distance between the two is 2-60mm.
3. multi-function electronic current-voltage transformer as claimed in claim 2, it is characterised in that the high-voltage bleeder
（21）With electric current secondary singal output lead（12）The distance between be 10-30mm.
4. multi-function electronic current-voltage transformer as claimed in claim 1, it is characterised in that the connection conductor（32）
For copper conductor, the conductive connection manner is conductive metal pipe（3）Welding or winding copper conductor are connected to divider high-pressure side
（211）.
5. multi-function electronic current-voltage transformer as claimed in claim 1, it is characterised in that the connection conductor（32）
For stud or bolt or non-bolt metallic rod, the conductive connection manner is conductive metal pipe（3）Welding or crimping connection
Conductor（32）, it is connected to divider high-pressure side（211）.
6. multi-function electronic current-voltage transformer as claimed in claim 1, it is characterised in that the Current Voltage mutual inductance
Device lower end sets ground connection barrier metal cover（22）, the ground connection barrier metal cover（22）Pass through earth stud（23）Connect with divider
Ground terminal（212）It is connected.
7. multi-function electronic current-voltage transformer as claimed in claim 1, it is characterised in that the mutual inductor coil
（11）For minicrystal iron core coil or silicon steel coil or Rogowski coil.
8. multi-function electronic current-voltage transformer as claimed in claim 1, it is characterised in that the high-voltage bleeder
（21）For resitstance voltage divider or capacitive divider or RC divider.
9. multi-function electronic current-voltage transformer as claimed in claim 1, it is characterised in that the fairlead（34）For
Stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720177448.XU CN206618792U (en) | 2017-02-27 | 2017-02-27 | A kind of multi-function electronic current-voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720177448.XU CN206618792U (en) | 2017-02-27 | 2017-02-27 | A kind of multi-function electronic current-voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206618792U true CN206618792U (en) | 2017-11-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720177448.XU Expired - Fee Related CN206618792U (en) | 2017-02-27 | 2017-02-27 | A kind of multi-function electronic current-voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206618792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646082A (en) * | 2018-08-16 | 2018-10-12 | 江苏靖江互感器股份有限公司 | A kind of capacitive cable type electro pressure sensor of ring main unit |
-
2017
- 2017-02-27 CN CN201720177448.XU patent/CN206618792U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108646082A (en) * | 2018-08-16 | 2018-10-12 | 江苏靖江互感器股份有限公司 | A kind of capacitive cable type electro pressure sensor of ring main unit |
| CN108646082B (en) * | 2018-08-16 | 2023-12-08 | 江苏靖江互感器股份有限公司 | Capacitive cable type voltage sensor for ring main unit |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |