CN103489602B - A kind of high-voltage current device - Google Patents
A kind of high-voltage current device Download PDFInfo
- Publication number
- CN103489602B CN103489602B CN201310484504.0A CN201310484504A CN103489602B CN 103489602 B CN103489602 B CN 103489602B CN 201310484504 A CN201310484504 A CN 201310484504A CN 103489602 B CN103489602 B CN 103489602B
- Authority
- CN
- China
- Prior art keywords
- secondary coil
- primary winding
- radome
- dielectric
- binding post
- 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.)
- Active
Links
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
A kind of high-voltage current device, the present invention includes secondary coil, radome, dielectric, shell, base, secondary coil binding post, iron core, primary winding, primary winding binding post, its attachment structure is: primary winding by punching or etc. ampere-turn method be located in iron core, primary winding two ends are connected with primary winding binding post, and primary winding binding post position is located on the upper brace of high-voltage current device；Secondary coil is wound on iron core, insulant isolation is adopted between coil and the coil of secondary coil, secondary coil is also adopted by same insulant isolation between layers, and the position of secondary coil binding post is located on the base of high-voltage current device, and radome covers on outside secondary coil；Dielectric is located between radome and shell.The advantages such as the present invention can be used for high-tension current current lifting device or high voltage standard current transformer, has dielectric strength height, compact conformation.
Description
Technical field
The present invention relates to the high-voltage current device filling dielectric, particularly to high voltage bearing current lifting device or high voltage bearing standard current transformer.
Background technology
In recent years, threephase current transformer and threephase potential transformer use in a large number in the electrical network of 35kV and following electric pressure, and they are used for large user and the voltage monitoring of critical point electric energy metrical and electrical network is made in special change.Rise on August 1st, 2004 and JB/T10432-2004 " three-phase combination transformer " JB/T10433-2004 " threephase potential transformer " industry standard of enforcement defines three-phase combination transformer and the error test of threephase potential transformer, temperature rise test and interferes test and all should carry out when applying three-phase voltage and three-phase current.But, the three-phase mutual inductor testing apparatus that testing agencies at different levels but do not adapt.For a long time, be three-phase combination transformer manufacturer or detection department at different levels it is all generally adopt single plane method to carry out exfactory inspection, examination and week inspection, namely when low-voltage or low current, current transformer loop or voltage transformer circuit are respectively adopted each phase is applied rated current or rated voltage method detect.Single plane method detection mainly has following several disadvantage:
(1) current transformer is to be operated in high pressure conditions, and detecting is at low-pressure state.
(2) voltage transformer is to be operated in current state, and detecting is in small area analysis state.
(3) three-phase combination transformer is to run under three-phase state, and detects and only carry out under single-phase.
(4) existing current transformer in combination transformer, has again voltage transformer, and when actual motion, the two works simultaneously, there is electromagnetic field effects each other.
Carry out trichotomy detection and lack high voltage bearing current lifting device or high voltage bearing standard current transformer.
Summary of the invention
During existing single plane method detection current transformer, standard current transformer, current lifting device are all detect under low-voltage, big current conditions, existing standard current transformer, current lifting device all cannot tolerate high pressure, the present invention produces in this context, and a kind of high-voltage current device of the present invention can be high voltage bearing current lifting device or high voltage bearing standard current transformer.
A kind of high-voltage current device, present invention is characterized in that and include secondary coil, radome, dielectric, shell, base, secondary coil binding post, iron core, primary winding, primary winding binding post, its attachment structure is: primary winding by punching or etc. ampere-turn method be located in iron core, primary winding two ends are connected with primary winding binding post, and primary winding binding post position is located on the upper brace of high-voltage current device；Secondary coil is wound on iron core, insulant isolation is adopted between coil and the coil of secondary coil, secondary coil is also adopted by same insulant isolation between layers, and the position of secondary coil binding post is located on the base of high-voltage current device, and radome covers on outside secondary coil；Dielectric is located between radome and shell.
Dielectric of the present invention adopts non-linear resistance material and epoxy resin to report to the leadship after accomplishing a task placement, and is at least placed with one layer of non-linear resistance material and epoxy resin.
The scope of the thickness of the non-linear resistance material that dielectric of the present invention adopts and the ratio of epoxy thickness is be more than or equal to 1/4, less than or equal to 1/2.The non-linear resistance material and the epoxy resin flash-over characteristic that are adopted are different.
Iron core of the present invention, primary winding, secondary coil are respectively positioned in radome.To guarantee that high voltage does not cause the stray capacitance of secondary coil.Shell of the present invention is produced by insulant one-shot forming.
Radome of the present invention is between primary winding for primary winding by the diameter of perforate and five times and more than five times of insulated hull or shielding paper overall diameter, radome is with insulated hull or shielding paper overall diameter two times and less than two times between secondary coil for secondary coil by the diameter of perforate；
Radome of the present invention is that primary winding opening area adopts epoxy resin to be filled with, fill region thickness is radome thickness 5 times and more than 5 times.The dielectric filling region in dielectric is epoxy resin, and is once pouring molding, and dielectric elsewhere adopts non-linear resistance material and epoxy resin to report to the leadship after accomplishing a task placement, and is at least placed with one layer of non-linear resistance material and epoxy resin.
The invention has the beneficial effects as follows: current lifting device can be carried out high pressure resistant test by this device, make insulating properties better, more compact structure.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram；
Fig. 2 is insulant profile；
Profile when Fig. 3 is primary winding extraction.
In Fig. 1: 1 is secondary coil；2 is radome；3 is dielectric；4 is shell；5 is base；6 is secondary coil binding post；7 is iron core；8 is primary winding；9 is primary winding binding post.
In Fig. 2: 301 is non-linear resistance material, 302 is epoxy resin, and 303 is multilayered nonlinear resistance material and epoxy resin, and 304 is non-linear resistance material, and 305 is epoxy resin.
In Fig. 3: 2 is radome, 3 is dielectric, and 8 is primary winding, and 10 is epoxy resin.
Detailed description of the invention
See Fig. 1, a kind of high-voltage current device, present invention is characterized in that and include secondary coil 1, radome 2, dielectric 3, shell 4, base 5, secondary coil binding post 6, iron core 7, primary winding 8, primary winding binding post 9, its attachment structure is: primary winding 8 by punching or etc. ampere-turn method be located in iron core 7, primary winding 8 two ends are connected with primary winding binding post 9, and primary winding binding post 9 position is located on the upper brace of high-voltage current device；Secondary coil 1 is wound on iron core 7, insulant isolation is adopted between coil and the coil of secondary coil 1, secondary coil 1 is also adopted by same insulant isolation between layers, the position of secondary coil 1 binding post 6 is located on the base 5 of high-voltage current device, and radome 2 covers on outside secondary coil 1；Dielectric 3 is located between radome 2 and shell 4.
Dielectric 3 of the present invention adopts non-linear resistance material and epoxy resin to report to the leadship after accomplishing a task placement, and is at least placed with one layer of non-linear resistance material and epoxy resin.
The scope of the thickness of the non-linear resistance material that dielectric 3 of the present invention adopts and the ratio of epoxy thickness is be more than or equal to 1/4, less than or equal to 1/2.The non-linear resistance material and the epoxy resin flash-over characteristic that are adopted are different.
Iron core 7 of the present invention, primary winding 8, secondary coil 1 are respectively positioned in radome 2.To guarantee that high voltage does not cause the stray capacitance of secondary coil.Shell of the present invention is produced by insulant one-shot forming.
Radome 2 of the present invention is between primary winding for primary winding by the diameter of perforate and five times and more than five times of insulated hull or shielding paper overall diameter, radome 2 is with insulated hull or shielding paper overall diameter two times and less than two times between secondary coil for secondary coil by the diameter of perforate；
Radome 2 of the present invention adopts epoxy resin to be filled with for primary winding opening area, fill region 5 times and more than 5 times that thickness is radome 2 thickness.The dielectric filling region in dielectric is epoxy resin 10, and is once pouring molding, and dielectric elsewhere adopts non-linear resistance material and epoxy resin to report to the leadship after accomplishing a task placement, and is at least placed with one layer of non-linear resistance material and epoxy resin.
The high-voltage current device that the present invention develops fully meets the requirement of relative national standards and industry standard, energy analog current transformer actual motion state under high-pressure situations, and detect its error with this understanding and carry out the performance test being correlated with, thus examining design and the manufacturing property of this product exactly, for the examination and test of products, metrological supervision department provides means.This standard adopts the detection method that test specimen passes into rated current and rated voltage simultaneously, only current transformer is carried out up-flow, rise to the additive error brought in rated voltage situation when overcoming the calibrating of above-mentioned single plane method, makes testing result accurate, reliable.
Primary winding of the present invention, secondary coil wrap up each through insulating paper.The problem that it mainly solves is exactly high pressure resistant, then the high pressure stray capacitance to coil is avoided, improve accuracy and the power factor of current device, the method of high pressure resistant employing adopts insulant to isolate exactly, the profile of insulant is as shown in Figure 2, it is at least non-linear resistance material and the epoxy resin of 1 layer, it is preferably 2 layers, they bi-materials are alternately placed, material near iron core and coil is non-linear resistance material, the thickness of non-linear resistance material and the ratio of epoxy thickness are be more than or equal to 1/4, less than or equal to 1/2, thickness proportion is preferably 1/3, the outermost material of high-voltage current device is necessary for epoxy resin, shell adopts one-time formed technology to complete, this method mainly considers the equivalent capacity and the resistance that increase insulating dielectric materials, increase the reliability of insulation.
Present invention, avoiding the high pressure measure to coil stray capacitance influences and be mainly the opening reducing radome, in radome for primary winding by the diameter of perforate be five times between primary winding and more than, radome is that primary winding opening area epoxy resin is filled with, the thickness in epoxy resin filling region be 5 times of radome thickness and more than, concrete profile is as it is shown on figure 3, epoxy resin filling region is seen in Fig. 3 shown in 10.Radome is two times between secondary coil and following for secondary coil by the diameter of perforate, space in the middle of radome opening diameter and secondary coil is filled with by shielding paper, or it is believed that includes secondary coil with shielding paper until filling up radome is the hole that secondary coil is opened.
Claims (5)
1. a high-voltage current device, it is characterized in that: include secondary coil (1), radome (2), dielectric (3), shell (4), base (5), secondary coil binding post (6), iron core (7), primary winding (8), primary winding binding post (9), its attachment structure is: primary winding (8) by punching or etc. ampere-turn method be located in iron core (7), primary winding (8) two ends are connected with primary winding binding post (9), primary winding binding post (9) position is located on the upper brace of high-voltage current device；Secondary coil (1) is wound on iron core (7), insulant isolation is adopted between coil and the coil of secondary coil (1), secondary coil (1) is also adopted by same insulant isolation between layers, the position of secondary coil (1) binding post (6) is located on the base (5) of high-voltage current device, and radome (2) covers on secondary coil (1) outward；Dielectric (3) is located between radome (2) and shell (4)；Dielectric (3) adopts non-linear resistance material and epoxy resin to report to the leadship after accomplishing a task placement, and at least it is placed with one layer of non-linear resistance material and epoxy resin, the scope of the thickness of the non-linear resistance material that dielectric (3) adopts and the ratio of epoxy thickness is be more than or equal to 1/4, less than or equal to 1/2.
2. a kind of high-voltage current device according to claim 1, it is characterised in that: iron core (7), primary winding (8), secondary coil (1) are respectively positioned in radome (2).
3. a kind of high-voltage current device according to claim 1, it is characterized in that: radome (2) is between primary winding for primary winding by the diameter of perforate and five times and more than five times of insulated hull or shielding paper overall diameter, radome (2) is with insulated hull or shielding paper overall diameter two times and less than two times between secondary coil for secondary coil by the diameter of perforate.
4. a kind of high-voltage current device according to claim 1 or 3, it is characterized in that: radome (2) adopts epoxy resin (10) to be filled with for primary winding opening area, fill region 5 times and more than 5 times that thickness is radome (2) thickness.
5. a kind of high-voltage current device according to claim 4, it is characterized in that: the dielectric filling region in dielectric is epoxy resin (10), and be once pouring molding, dielectric elsewhere adopts non-linear resistance material and epoxy resin to report to the leadship after accomplishing a task placement, and is at least placed with one layer of non-linear resistance material and epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310484504.0A CN103489602B (en) | 2013-10-16 | 2013-10-16 | A kind of high-voltage current device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310484504.0A CN103489602B (en) | 2013-10-16 | 2013-10-16 | A kind of high-voltage current device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103489602A CN103489602A (en) | 2014-01-01 |
| CN103489602B true CN103489602B (en) | 2016-06-29 |
Family
ID=49829759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310484504.0A Active CN103489602B (en) | 2013-10-16 | 2013-10-16 | A kind of high-voltage current device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103489602B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166117B (en) * | 2014-08-18 | 2017-05-10 | 国家电网公司 | High-current synthesis circuit of electronic current transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0774032A (en) * | 1993-09-01 | 1995-03-17 | Toshiba Corp | High-voltage apparatus |
| JP2000208338A (en) * | 1999-01-14 | 2000-07-28 | Mitsubishi Electric Corp | Shell-form electromagnetic induction device |
| CN2610466Y (en) * | 2003-02-18 | 2004-04-07 | 孙闻峰 | Dry high-voltage current transformer |
| CN201904204U (en) * | 2010-11-09 | 2011-07-20 | 大连华亿电力电器有限公司 | Novel current transformer |
| CN203552923U (en) * | 2013-10-16 | 2014-04-16 | 云南电力试验研究院（集团）有限公司电力研究院 | High-voltage current device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2741823Y (en) * | 2004-10-31 | 2005-11-23 | 铁道部电气化工程局宝鸡器材厂 | DC lightning arrester with stripping device for subway |
-
2013
- 2013-10-16 CN CN201310484504.0A patent/CN103489602B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0774032A (en) * | 1993-09-01 | 1995-03-17 | Toshiba Corp | High-voltage apparatus |
| JP2000208338A (en) * | 1999-01-14 | 2000-07-28 | Mitsubishi Electric Corp | Shell-form electromagnetic induction device |
| CN2610466Y (en) * | 2003-02-18 | 2004-04-07 | 孙闻峰 | Dry high-voltage current transformer |
| CN201904204U (en) * | 2010-11-09 | 2011-07-20 | 大连华亿电力电器有限公司 | Novel current transformer |
| CN203552923U (en) * | 2013-10-16 | 2014-04-16 | 云南电力试验研究院（集团）有限公司电力研究院 | High-voltage current device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103489602A (en) | 2014-01-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201298448Y (en) | A split type voltage mutual inductor | |
| CN106932631B (en) | A kind of bus voltage measurement device established in single-phase GIS tank body closed end | |
| CN101833043A (en) | Method for measuring electric capacity and dielectric loss of capacitance type voltage transformer | |
| CN103605057A (en) | Oil paper insulation breakdown intensity test apparatus and method | |
| WO2017016370A1 (en) | Method of designing ultra-high voltage ct coil having self-calibration function | |
| CN103293507B (en) | The online test method of current transformer error | |
| CN205920140U (en) | Measurement voltage transformer secondary load compensation arrangement and electric energy metering device | |
| CN104777406B (en) | Oil-immersed power transformer turn to turn test model coil and preparation method thereof | |
| CN203552923U (en) | High-voltage current device | |
| CN103489602B (en) | A kind of high-voltage current device | |
| CN102323525B (en) | Test method for insulating property experiment on lead with withstand voltage level of more than 35kV | |
| CN207067321U (en) | High altitude localities 750kV shunt reactor Partial Discharge Testing on Site devices | |
| CN109164322A (en) | Dry-type distribution transformer winding coil material determination method and analytical equipment | |
| CN201556523U (en) | High voltage dry type current transformer with protecting gap | |
| CN107436399A (en) | High altitude localities 750kV shunt reactor local discharge test devices | |
| CN106653336B (en) | A method of preparing the current transformer with simplification error test function | |
| CN104376765A (en) | Model simulating crack fault of capacitive screen of oil-immersed inverted current transformer | |
| CN206758260U (en) | Pole-mounted circuit breaker single-phase current transformer | |
| CN101571553B (en) | Minitype high-voltage electric energy meter directly arranged in 10KV power supply circuit | |
| CN206497147U (en) | A kind of multi-function electronic current-voltage transformer | |
| CN201716359U (en) | Non-contact electronic type voltage sampling device | |
| CN203799852U (en) | Indoor voltage transformer | |
| CN206421907U (en) | A kind of combination transformer voltage cell machine body structure | |
| CN114097052A (en) | Mutual inductor and method for isolating parts | |
| CN206618792U (en) | A kind of multi-function electronic current-voltage transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |