CN206583956U - A kind of electronic current voltage transformer - Google Patents

A kind of electronic current voltage transformer Download PDF

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Publication number
CN206583956U
CN206583956U CN201720177708.3U CN201720177708U CN206583956U CN 206583956 U CN206583956 U CN 206583956U CN 201720177708 U CN201720177708 U CN 201720177708U CN 206583956 U CN206583956 U CN 206583956U
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CN
China
Prior art keywords
divider
transformer
voltage transformer
voltage
measuring coil
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.)
Expired - Fee Related
Application number
CN201720177708.3U
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Chinese (zh)
Inventor
陈剑萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Linger Electric Power Technology Co Ltd
Original Assignee
Hangzhou Linger Electric Power Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hangzhou Linger Electric Power Technology Co Ltd filed Critical Hangzhou Linger Electric Power Technology Co Ltd
Priority to CN201720177708.3U priority Critical patent/CN206583956U/en
Application granted granted Critical
Publication of CN206583956U publication Critical patent/CN206583956U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model is related to transformer and manufactures and designs field, particularly a kind of electronic current voltage transformer.Including being arranged at the current transformer on top and the electronic type voltage transformer of bottom, current transformer is fixedly installed on conductive metal pipe, including single measuring coil and electric current secondary singal output lead;Voltage transformer includes single high-voltage bleeder, and high-voltage bleeder includes the high-pressure side close to measuring coil and the earth terminal away from measuring coil, 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 measuring coil, conductive metal pipe is conductively connected with divider high-pressure side by being connected conductor;Electrically insulating silicone rubber is filled at 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 and excellent partial discharge.

Description

A kind of electronic current voltage transformer
Technical field
The utility model is related to transformer technical field, more particularly to a kind of electronic current-voltage combination 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 electronic current voltage transformer that the utility model is provided, not only by current transformer and Current transformer combination together, has two kinds of functions concurrently, and is all-silicon rubber die casting disposal molding monolithic construction, effectively Solve the defect of prior art.
The technical solution of the utility model is:
A kind of electronic current voltage transformer, includes the current transformer and electronic type voltage transformer of integral type, its Be characterised by, the current transformer is arranged at top and is fixedly installed on conductive metal pipe, including single measuring coil and The electric current secondary singal output lead drawn from measuring coil;The electronic type voltage transformer is arranged at bottom, including single High-voltage bleeder, the high-voltage bleeder is divider high-pressure side, one end away from measuring coil close to one end of measuring coil For divider earth terminal, the divider earth terminal is connected with voltage secondary singal output lead;The iron core of the measuring coil Centre is provided with the through hole passed through for the conductive metal pipe, the conductive metal pipe and the perpendicular structure of high-voltage bleeder, leads Electric metal pipe is conductively connected with divider high-pressure side by being connected conductor;At the electronic current voltage transformer internal voids Electrically insulating silicone rubber is filled, lower end is connected with fairlead, the electric current secondary singal output lead and the output of voltage secondary singal are drawn Line 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 electronic current voltage transformer lower end sets ground connection barrier metal cover, and the ground connection barrier metal cover passes through Earth stud is connected with divider earth terminal.
The high-voltage bleeder is resitstance voltage divider or capacitive divider or RC divider.
The measuring coil is minicrystal iron core coil or silicon steel coil or Rogowski coil.
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 the utility model electronic current voltage transformer front view;
Fig. 2 is Fig. 1 along line A-A 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 the embodiment one and embodiment two of electronic current voltage transformer of the present utility model.
Embodiment one, with reference to Fig. 1 and Fig. 2, electronic current voltage transformer is the current transformer and electronics of integral type Formula voltage transformer, the current transformer is arranged at top, including minicrystal iron core measuring coil 11 and draws from measuring coil 11 The electric current secondary singal output lead 12 gone out;The electronic type voltage transformer is arranged at bottom, including resitstance voltage divider 21, institute It is divider high-pressure side 211 that resitstance voltage divider 21, which is stated, close to one end of measuring coil 11, and one end away from measuring coil 11 is to divide Depressor earth terminal 212, the divider earth terminal 212 is connected with voltage secondary singal output lead 213;
Electronic current voltage transformer is using a punching bus-type structure, and Primary Conductor is through current transformer The hollow conductive metal pipe 3 of the through hole 13 of the core center of measuring coil 11, the conductive metal pipe 3 is in high-voltage bleeder 21 Copper conductor 32 is wound on vertical stratification, conductive metal pipe 3, copper conductor 32 is connected to divider high-pressure side 211 and conducts electric height Pressure;Electrically insulating silicone rubber 33 is filled at the electronic current voltage transformer internal voids, lower end is connected with stainless steel tube 34, institute Electric current secondary singal output lead 12 and voltage secondary singal output lead 213 is stated to draw through the hole of stainless steel tube 34.
Electronic current voltage transformer lower end sets ground connection barrier metal cover 22, and the ground connection barrier metal cover 22 passes through Earth stud 23 is connected with divider earth terminal 212.High-voltage bleeder 21 is parallel with electric current secondary singal output lead 12 Structure, distance between the two is 10mm.
Embodiment two, referring still to Fig. 1 and Fig. 2, electronic current voltage transformer for integral type current transformer and Electronic type voltage transformer, the current transformer is arranged at top, including silicon steel core measuring coil 11 and from measuring coil The 11 electric current secondary singal output leads 12 drawn;The electronic type voltage transformer is arranged at bottom, including capacitive divider 21, the capacitive divider 21 is divider high-pressure side 211, one end away from measuring coil 11 close to one end of measuring coil 11 For divider earth terminal 212, the divider earth terminal 212 is connected with voltage secondary singal output lead 213;
Electronic current voltage transformer is using a punching bus-type structure, and Primary Conductor is through current transformer The hollow conductive metal pipe 3 of the core center through hole 13 of measuring coil 11, the conductive metal pipe 3 is with high-voltage bleeder 21 in vertical Straight structure, conductive metal pipe 3 directly welds conducting rod 32, is conductively connected with divider high-pressure side 211 and conducts electric high pressure;It is described Electrically insulating silicone rubber 33 is filled at electronic current voltage transformer internal voids, 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.
Electronic current voltage transformer lower end sets ground connection barrier metal cover 22, and the ground connection barrier metal cover 22 passes through Earth stud 23 is connected with divider earth terminal 212.High-voltage bleeder 21 is parallel with electric current secondary singal output lead 12 Structure, distance between the two is 20mm.
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 electronic current voltage transformer, includes the current transformer and electronic type voltage transformer of integral type, it is special Levy and be, the current transformer is arranged at top and is fixedly installed in conductive metal pipe(3)On, including single measuring coil (11)With from measuring coil(11)The electric current secondary singal output lead of extraction(12);The electronic type voltage transformer is arranged at Bottom, including single high-voltage bleeder(21), the high-voltage bleeder(21)Close to measuring coil(11)One end be divider High-pressure side(211), away from measuring coil(11)One end be divider earth terminal(212), the divider earth terminal(212)Even It is connected to voltage secondary singal output lead(213);The measuring coil(11)Iron core in the middle of be provided with supply 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;The electronic current voltage transformer internal voids Place's filling electrically insulating silicone rubber(33), lower end and fairlead(34)Connection, the electric current secondary singal output lead(12)And voltage Secondary singal output lead(213)Through fairlead(34)Draw.
2. electronic current voltage transformer as claimed in claim 1, it is characterised in that the high-voltage bleeder(21)And electricity Flow secondary singal output lead(12)For parallel construction, distance between the two is 2-60mm.
3. electronic current voltage transformer as claimed in claim 2, it is characterised in that the high-voltage bleeder(21)And electricity Flow secondary singal output lead(12)The distance between be 10-30mm.
4. electronic current voltage transformer as claimed in claim 1, it is characterised in that the connection conductor(32)Led for copper Line, the conductive connection manner is conductive metal pipe(3)Welding or winding copper conductor, are connected to divider high-pressure side(211).
5. electronic current voltage transformer as claimed in claim 1, it is characterised in that the connection conductor(32)For double end Bolt or bolt or non-bolt metallic rod, the conductive connection manner are conductive metal pipe(3)Welding or crimping connection conductor (32), it is connected to divider high-pressure side(211).
6. electronic current voltage transformer as claimed in claim 1, it is characterised in that the electronic 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. electronic current voltage transformer as claimed in claim 1, it is characterised in that the high-voltage bleeder(21)For electricity Hinder divider or capacitive divider or RC divider.
8. electronic current voltage transformer as claimed in claim 1, it is characterised in that the measuring coil(11)For crystallite Iron-core coil or silicon steel coil or Rogowski coil.
9. electronic current voltage transformer as claimed in claim 1, it is characterised in that the fairlead(34)For stainless steel Pipe.
CN201720177708.3U 2017-02-27 2017-02-27 A kind of electronic current voltage transformer Expired - Fee Related CN206583956U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720177708.3U CN206583956U (en) 2017-02-27 2017-02-27 A kind of electronic current voltage transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720177708.3U CN206583956U (en) 2017-02-27 2017-02-27 A kind of electronic current voltage transformer

Publications (1)

Publication Number Publication Date
CN206583956U true CN206583956U (en) 2017-10-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720177708.3U Expired - Fee Related CN206583956U (en) 2017-02-27 2017-02-27 A kind of electronic current voltage transformer

Country Status (1)

Country Link
CN (1) CN206583956U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113655274A (en) * 2021-08-30 2021-11-16 西安交通大学 System and method for detecting transient transmission performance of combined electronic transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113655274A (en) * 2021-08-30 2021-11-16 西安交通大学 System and method for detecting transient transmission performance of combined electronic transformer

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Granted publication date: 20171024