CN102024557A - Electronic type current transformer - Google Patents
Electronic type current transformer Download PDFInfo
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- CN102024557A CN102024557A CN2009101834349A CN200910183434A CN102024557A CN 102024557 A CN102024557 A CN 102024557A CN 2009101834349 A CN2009101834349 A CN 2009101834349A CN 200910183434 A CN200910183434 A CN 200910183434A CN 102024557 A CN102024557 A CN 102024557A
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- secondary winding
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- current mutual
- control box
- mutual inductor
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Abstract
The invention relates to an electronic type current transformer comprising an oil temperature compensator, a shell, a primary conductor, a secondary conductor, an insulating medium, an insulating strut, a conductive body, a support and a secondary output control box, wherein the primary conductor passes through an inner shield and extends out of the shell through a secondary winding; the insulating strut is arranged below the shell; and the secondary output control box is fixed on the support and connected with the secondary winding through the conductive body. The electronic type current transformer has the advantages that an electric filed is uniformly distributed because the shell is made of alloy aluminum and is similar to the secondary winding in shape; the skeleton in the secondary winding is provided with an expansion compensation groove for the skeleton to obtain the expansion compensation when the temperature rises and the pressure changes; the position of the ending head of the winding is symmetric to the position of the starting head when an enameled round copper wire is wound, and the winding is arranged in a shielding case so as to effectively enhance the capability for resisting the electric field disturbance of the winding and guarantee the measuring accuracy; and the weight is lightened and the generality of components and parts is enhanced because a magnetic induction iron core is eliminated and insulating oil is used as the insulating medium.
Description
Technical field
The present invention relates to the current transformer that power industry is used, a kind of specifically electronic current mutual inductor.
Background technology
Relevant by retrieval patent documentation does not retrieve the electronic current mutual inductor identical with structure of the present invention at present as yet.Existing high-tension current inductor mainly contains: oil-immersed current transformer and sulfur hexafluoride current mutual inductor, because existing oil-immersed current transformer of its structural reason and sulfur hexafluoride current mutual inductor generally all have iron core, take electromagnetic induction to reach effect, this type of current transformer is owing to use iron core, so phenomenons such as magnetic saturation occur, make its electromagnetic induction efficient obviously lower, situation such as its volume is big in addition makes that current transformer integral device weight is obviously heavier.China's patent " novel high voltage combined independent electronic type current, voltage transformer ", the patent No.: 200720300527.1, a kind of electronic current, voltage transformer are disclosed, though this class formation has significantly improved to its effect, weight significantly alleviates, but also because its structural reason makes integral body be difficult to obtain evenly at aspects such as its Electric Field Distribution, thus be necessary existing electronic current mutual inductor is improved, to satisfy actual needs better.
Summary of the invention
The objective of the invention is to provide a kind of improvement on existing electronic current mutual inductor and oil-immersed current transformer basis, have in light weightly, bandwidth, range of dynamic measurement are big, measure accurately, and the uniform a kind of electronic current mutual inductor of Electric Field Distribution.
Technical characterictic of the present invention is: considering that Electric Field Distribution is even, measure accurately and be designed to export the electronic current mutual inductor that control box is formed on the basis by oil temperature compensator, housing, Primary Conductor, secondary winding, dielectric, insulation column, electric conductor, bearing, secondary, Primary Conductor is passed inner shield, secondary winding is stretched out housing, is provided with insulation column below housing; Lower end at insulation column is connected with bearing; Secondary output control box is fixed on the bearing, and links to each other with secondary winding by electric conductor.
The aluminum enclosure that described housing is the circular arc ring-type for similar to the secondary winding shape two half profile.
The circular arc housing of described housing for adopting the alloy aluminum casting to form.
Described secondary winding is made up of skeleton, enamel insulated round copper wire, signal shielding line, location, bar shielding, packing material, radome, and described skeleton is the support body that nonmagnetic substance is made, and is provided with the expansion compensation groove in the middle of it; Enamel insulated round copper wire is distributed on the skeleton; The receipts head of described its coiling of enamel insulated round copper wire and the position symmetry of starting; Radome is with the coil closed shield of secondary winding portion within it, and the signal shielding line is connected with secondary output control box.
Described insulation column is that high strength ceramic material global formation, high-temperature silicon disulfide rubber are wherein a kind of insulation full skirt body of material global formation.
Described secondary output control box is made up of housing, collector, and collector becomes digital signal with the analog signal conversion that secondary winding provides, and collector is for adopting the DTU (Data Transfer unit) of 16 AD conversion regimes.
During use, the terminals of Primary Conductor are connected with circuit, electric current flows through from Primary Conductor, and on secondary winding, induce electric current, transfer signals in the secondary output control box through electric conductor, and be digital signal through collector with analog-signal transitions with its induced signal, be input in the control room again, thereby carry out data acquisition and detection.
Advantage of the present invention is: because housing adopts alloy aluminum to make the structure of intending mutually with the secondary winding shape, thereby make inner Electric Field Distribution even; Because the skeleton in the secondary winding is provided with the expansion compensation groove, thereby when internal temperature rise, pressure variation occurring, make its skeleton obtain expansion compensation; Because its coiling is received head and is started the position symmetry during enamel insulated round copper wire coiling, and winding is arranged in the radome, and links to each other with the signal shielding line, thereby has improved the anti-electric field interference performance of winding effectively, has guaranteed the accurate precision of measurement of winding; Because collector adopts 16 AD conversion regimes of super low-power consumption to carry out data transaction, thereby has reduced the consumption of power; Because complete machine has been removed traditional magnetic induction iron core, and the inner insulating oil that adopts is as dielectric, housing adopts the alloy aluminum casting to form, thereby make the cavity internal electric field even, reduced partial discharge, alleviated weight simultaneously, improved the versatility of parts, so that the performance of equipment obviously strengthen; Because rational in infrastructure, dependable performance is so there is very big practical and popularizing value.
Description of drawings
Below with reference to accompanying drawing the present invention is further described:
Accompanying drawing 1 is an electronic current mutual inductor structural representation of the present invention;
Accompanying drawing 2 is that the A of accompanying drawing 1 is to structural representation;
Accompanying drawing 3 is perspective view of electronic current mutual inductance;
Accompanying drawing 4 is structural representations of the secondary winding of electronic current mutual inductance;
Accompanying drawing 5 is operation principle states of the secondary part of electronic current mutual inductance;
Accompanying drawing 6 is operation principle block diagrams of the collector of electronic current mutual inductance.
Embodiment
With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, accompanying drawing 6, electronic current mutual inductor of the present invention is made up of oil temperature compensator 1, housing 2, Primary Conductor 3, secondary winding 4, dielectric 5, insulation column 6, electric conductor 7, bearing 8, secondary output control box 9, Primary Conductor 3 is passed inner shield, secondary winding 4 is stretched out housing 2, the aluminum enclosure that described housing 2 is the circular arc ring-type for similar to the secondary winding shape two half profile, the circular arc housing of housing 2 for adopting the alloy aluminum casting to form; Contain dielectric 5 in housing 2 and the insulation column 6, dielectric 5 is an insulating oil.Below housing 2, be provided with insulation column 6; Be connected with bearing 8 in the lower end of insulation column 6; Secondary output control box 9 is fixed on the bearing 8, and link to each other with secondary winding 4 by electric conductor 7, described secondary winding 4 is made up of skeleton 41, enamel insulated round copper wire 42, signal shielding line 43, location 44, bar shielding 45, packing material 46, radome 47, the support body that described skeleton 41 is made for nonmagnetic substance is provided with expansion compensation groove 41a in the middle of it; Enamel insulated round copper wire 42 is distributed on the skeleton 41; The receipts head of described enamel insulated round copper wire 42 its coilings and the position symmetry of starting; Radome 47 is with the coil closed shield of secondary winding portion within it, and signal shielding line 43 is connected with secondary output control box 9.Insulation column 6 is wherein a kind of insulation full skirt body of material global formation for high strength ceramic material global formation, high-temperature silicon disulfide rubber, and present embodiment is the integral insulation full skirt body of high strength ceramic material through the high temperature sintering moulding.Secondary output control box 9 is made up of housing 91, collector 92, and collector 92 becomes digital signal with the analog signal conversion that secondary winding provides, and collector 92 is for adopting the DTU (Data Transfer unit) of 16 AD conversion regimes.
Claims (6)
1. electronic current mutual inductor is made up of oil temperature compensator (1), housing (2), Primary Conductor (3), secondary winding (4), dielectric (5), insulation column (6), electric conductor (7), bearing (8), secondary output control box (9), Primary Conductor (3) is passed inner shield, secondary winding (4) is stretched out housing (2), it is characterized in that: be provided with insulation column (6) in the below of housing (2); Be connected with bearing (8) in the lower end of insulation column (6); Secondary output control box (9) is fixed on the bearing (8), and links to each other with secondary winding (4) by electric conductor (7).
2. electronic current mutual inductor according to claim 1 is characterized in that: the aluminum enclosure that described housing (2) is the circular arc ring-type for similar to the secondary winding shape two half profile.
3. electronic current mutual inductor according to claim 1 and 2 is characterized in that: the circular arc housing of described housing (2) for adopting the alloy aluminum casting to form.
4. electronic current mutual inductor according to claim 1, it is characterized in that: described secondary winding (4) is made up of skeleton (41), enamel insulated round copper wire (42), signal shielding line (43), location (44), bar shielding (45), packing material (46), radome (47), the support body that described skeleton (41) is made for nonmagnetic substance is provided with expansion compensation groove (41a) in the middle of it; Enamel insulated round copper wire (42) is distributed on the skeleton (41); The receipts head of its coiling of described enamel insulated round copper wire (42) and the position symmetry of starting; Radome (47) is with the coil closed shield of secondary winding portion within it, and signal shielding line (43) is connected with secondary output control box (9).
5. electronic current mutual inductor according to claim 1 is characterized in that: described insulation column (6) is that high strength ceramic material global formation, high-temperature silicon disulfide rubber are wherein a kind of insulation full skirt body of material global formation.
6. electronic current mutual inductor according to claim 1, it is characterized in that: described secondary output control box (9) is made up of housing (91), collector (92), collector (92) becomes digital signal with the analog signal conversion that secondary winding provides, and collector (92) is for adopting the DTU (Data Transfer unit) of 16 AD conversion regimes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910183434.9A CN102024557B (en) | 2009-09-21 | 2009-09-21 | Electronic current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910183434.9A CN102024557B (en) | 2009-09-21 | 2009-09-21 | Electronic current mutual inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102024557A true CN102024557A (en) | 2011-04-20 |
| CN102024557B CN102024557B (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910183434.9A Active CN102024557B (en) | 2009-09-21 | 2009-09-21 | Electronic current mutual inductor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811164A (en) * | 2012-11-07 | 2014-05-21 | 江苏思源赫兹互感器有限公司 | Current transformer |
| CN104678155A (en) * | 2013-11-26 | 2015-06-03 | 国家电网公司 | Equipotential shielding capacitor type voltage transformer |
| CN104678145A (en) * | 2013-11-26 | 2015-06-03 | 国家电网公司 | Equipotential shielding capacitor type voltage transformer |
| CN104678263A (en) * | 2013-11-26 | 2015-06-03 | 国家电网公司 | Power frequency testing method for equipotential shielding capacitor type voltage transformer |
| CN105699726A (en) * | 2014-11-24 | 2016-06-22 | 国家电网公司 | Installation method of capacitor units of equipotential shielding capacitor voltage transformer |
| CN111856379A (en) * | 2020-06-24 | 2020-10-30 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Current transformer operating characteristic simulation test platform and monitoring system in low-temperature environment |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1275290B (en) * | 1995-06-01 | 1997-08-05 | Passoni E Villa Fabbrica Isola | TRANSFORMER FOR CURRENT MEASUREMENT IN HIGH VOLTAGE ELECTRIC NETWORKS |
| CN2620360Y (en) * | 2003-02-26 | 2004-06-09 | 江苏精科互感器有限公司 | Oil paper standing upside down type high-voltage current transformer |
| CN1808646B (en) * | 2005-01-19 | 2010-10-13 | 江苏思源赫兹互感器有限公司 | Oil-immerged inversed current transformer |
| CN2786755Y (en) * | 2005-04-08 | 2006-06-07 | 南瑞继保电气有限公司 | Hollow core coils |
| CN201134346Y (en) * | 2007-12-29 | 2008-10-15 | 武汉格蓝若光电互感器有限公司 | Novel high-voltage independent electronic voltage mutual inductor |
| CN201252001Y (en) * | 2008-07-08 | 2009-06-03 | 江苏思源赫兹互感器有限公司 | Explosion prevention oil immersion inverted vertical mutual inductor |
| CN201570364U (en) * | 2009-09-21 | 2010-09-01 | 江苏思源赫兹互感器有限公司 | Electronic type current transformer |
-
2009
- 2009-09-21 CN CN200910183434.9A patent/CN102024557B/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811164A (en) * | 2012-11-07 | 2014-05-21 | 江苏思源赫兹互感器有限公司 | Current transformer |
| CN104678155A (en) * | 2013-11-26 | 2015-06-03 | 国家电网公司 | Equipotential shielding capacitor type voltage transformer |
| CN104678145A (en) * | 2013-11-26 | 2015-06-03 | 国家电网公司 | Equipotential shielding capacitor type voltage transformer |
| CN104678263A (en) * | 2013-11-26 | 2015-06-03 | 国家电网公司 | Power frequency testing method for equipotential shielding capacitor type voltage transformer |
| CN104678155B (en) * | 2013-11-26 | 2018-11-27 | 国家电网公司 | A kind of equal potential shielded capacitor voltage transformer |
| CN104678263B (en) * | 2013-11-26 | 2019-01-11 | 国家电网公司 | A kind of industrial frequency experiment method suitable for equal potential shielded capacitor voltage transformer |
| CN105699726A (en) * | 2014-11-24 | 2016-06-22 | 国家电网公司 | Installation method of capacitor units of equipotential shielding capacitor voltage transformer |
| CN111856379A (en) * | 2020-06-24 | 2020-10-30 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Current transformer operating characteristic simulation test platform and monitoring system in low-temperature environment |
| CN111856379B (en) * | 2020-06-24 | 2022-10-04 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Monitoring system of current transformer operating characteristic simulation test platform in low-temperature environment |
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| Publication number | Publication date |
|---|---|
| CN102024557B (en) | 2015-09-16 |
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