CN206497147U - A kind of multi-function electronic current-voltage transformer - Google Patents

A kind of multi-function electronic current-voltage transformer Download PDF

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Publication number
CN206497147U
CN206497147U CN201720177364.6U CN201720177364U CN206497147U CN 206497147 U CN206497147 U CN 206497147U CN 201720177364 U CN201720177364 U CN 201720177364U CN 206497147 U CN206497147 U CN 206497147U
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CN
China
Prior art keywords
voltage
transformer
current
divider
voltage transformer
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Expired - Fee Related
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CN201720177364.6U
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Chinese (zh)
Inventor
陈剑萍
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Hangzhou Linger Electric Power Technology Co Ltd
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Hangzhou Linger Electric Power Technology Co Ltd
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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.Including being arranged at top and being fixedly installed in the single-phase and zero sequence current mutual inductor on conductive metal pipe, and bottom single-phase and zero sequential potential transformer, each current transformer include mutual inductor coil and electric current secondary singal output lead;Each electronic type voltage transformer includes high-voltage bleeder, and two high-voltage bleeders are arranged in parallel, 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 the multi-function electronic current-voltage transformer internal voids.This product uses all-silicon rubber die casting disposal molding monolithic construction, the problem of efficiently solving conventional epoxies product cold cracking, and has excellent insulating properties, superpower resistance to voltage levels.

Description

A kind of multi-function electronic current-voltage transformer
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 current transformers, electronic type voltage transformer belong to stand-alone product mostly, and product, which is installed, to be compared Cumbersome, cost of manufacture is higher, and the electronic mutual inductor performance difference occurred in market is larger.Have in the prior art Current Voltage combination transformer, generally internal to use epoxy resin as insulation, outside is coated with one layer of silicon rubber again, Cracking damage phenomenon occurs in more than subzero 20 degree, it is impossible to use in high and cold, high altitude localities, and manufacturing procedure is complicated, processing 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 current transformer With 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 current transformer and the electronic type voltage mutual inductance of integral type Device, it is characterised in that the current transformer is two, respectively measurement or protection single-phase current transformer and zero-sequence current Transformer, is arranged at top and is fixedly installed on conductive metal pipe, and each current transformer includes mutual inductor coil and from mutual The electric current secondary singal output lead that sensor coil is drawn;The electronic type voltage transformer is two, and respectively measurement is single Phase voltage transformer and zero sequential potential transformer, are arranged at bottom, and each electronic type voltage transformer includes high-voltage bleeder, two Individual high-voltage bleeder is arranged in parallel, and the high-voltage bleeder is divider high-pressure side close to one end of mutual inductor coil, away from mutually One end of sensor coil is divider earth terminal, and the divider earth terminal is connected with voltage secondary singal output lead;It is described The through hole passed through for the conductive metal pipe, the conductive metal pipe and high pressure partial pressure are provided with the middle of the iron core of mutual inductor coil The perpendicular structure of device, conductive metal pipe is conductively connected with divider high-pressure side by being connected conductor;The multi-function electronic electricity Flow and electrically insulating silicone rubber is filled at voltage transformer internal voids, lower end is connected with fairlead, the electric current secondary singal output is drawn Line and voltage secondary singal output lead are 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 disposal molding monolithic construction, 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 the utility model multi-function electronic current-voltage transformer structure top 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 current transformer of integral type And electronic type voltage transformer, current transformer is arranged at top, is the combination of phase current mutual inductor and zero sequence current mutual inductor, Wherein phase current mutual inductor is used to measuring or protecting phase current, and zero sequence current mutual inductor is used to measure zero-sequence current.Including two Roche mutual inductor coil 11 and the electric current secondary singal output lead 12 drawn respectively from two mutual inductor coils 11.
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 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 mutual for the electric current of integral type Sensor and electronic type voltage transformer, current transformer are arranged at top, are phase current mutual inductor and zero sequence current mutual inductor Combination, 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 electric current secondary singal output lead 12 drawn respectively from two mutual inductor coils 11.
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 current transformer and the electronic type voltage mutual inductance of integral type Device, it is characterised in that the current transformer is two, respectively measurement or protection single-phase current transformer and zero-sequence current Transformer, is arranged at top and while is fixedly installed in conductive metal pipe(3)On, each current transformer includes mutual inductor coil (11)With from mutual inductor coil(11)The electric current secondary singal output lead of extraction(12);The electronic type voltage transformer is two Individual, respectively measurement single-phase potential transformer and zero sequential potential transformer are arranged at bottom, each electronic type voltage transformer Including high-voltage bleeder(21), two high-voltage bleeders(21)It is arranged in parallel, the high-voltage bleeder(21)Close to transformer line Circle(11)One end be divider high-pressure side(211), away from mutual inductor coil(11)One end be divider earth terminal(212), The divider earth terminal(212)It is connected with voltage secondary singal output lead(213);The mutual inductor coil(11)Iron core Centre, which is provided with, supplies the conductive metal pipe(3)The through hole passed through(13), the conductive metal pipe(3)With high-voltage bleeder(21) Perpendicular structure, conductive metal pipe(3)With divider high-pressure side(211)By connecting conductor(32)It is conductively connected;Many work( Electrically insulating silicone rubber can be filled at electronic current voltage transformer internal voids(33), lower end and fairlead(34)Connection, it is described Electric current secondary singal 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(32)It is connected to divider high pressure End(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.
CN201720177364.6U 2017-02-27 2017-02-27 A kind of multi-function electronic current-voltage transformer Expired - Fee Related CN206497147U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720177364.6U CN206497147U (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
CN201720177364.6U CN206497147U (en) 2017-02-27 2017-02-27 A kind of multi-function electronic current-voltage transformer

Publications (1)

Publication Number Publication Date
CN206497147U true CN206497147U (en) 2017-09-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108630419A (en) * 2018-06-04 2018-10-09 湖北大二互科技股份有限公司 Combined complete formula current transformer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108630419A (en) * 2018-06-04 2018-10-09 湖北大二互科技股份有限公司 Combined complete formula current transformer
CN108630419B (en) * 2018-06-04 2023-09-05 湖北大二互科技股份有限公司 Combined sleeve type current transformer

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Granted publication date: 20170915

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