CN203250630U - Capacitor voltage transformer electromagnetism unit intermediate transformer - Google Patents
Capacitor voltage transformer electromagnetism unit intermediate transformer Download PDFInfo
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- CN203250630U CN203250630U CN 201320259614 CN201320259614U CN203250630U CN 203250630 U CN203250630 U CN 203250630U CN 201320259614 CN201320259614 CN 201320259614 CN 201320259614 U CN201320259614 U CN 201320259614U CN 203250630 U CN203250630 U CN 203250630U
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Abstract
The utility model relates to electrical power system high-voltage measurement or relay protection equipment, in particular to a capacitor voltage transformer electromagnetism unit intermediate transformer. The capacitor voltage transformer electromagnetism unit intermediate transformer comprises an iron core, a primary winding and a secondary winding, wherein the primary winding and the secondary winding are concentrically wound on an insulative skeleton, the iron core is sleeved with the primary winding and the secondary winding and is poured through epoxy resin in a vacuum mode to form a low-voltage insulator, the primary winding is connected with a primary high-voltage connecting terminal and a primary grounding terminal which are led out of the low-voltage insulator, and the secondary winding is connected with a secondary connecting terminal led out of the low-voltage insulator. The capacitor voltage transformer electromagnetism unit intermediate transformer has the advantages of being small in size, convenient to install, high in measurement precision, convenient to wire, capable of preventing moisture and condensation, insulative and stable.
Description
Technical field
The utility model relates to electric power system high-tension measurement or relay protection device, specifically a kind of capacitance type potential transformer electromagnetic unit intermediate transformer.
Background technology
Capacitance type potential transformer (be called for short CVT) is to be used for voltage and power measurement, electric energy metrical, relaying protection, the automatic capital equipment of control in high pressure and the ultrahigh voltage power system, and can double as coupling capacitor and be used for power-line carrier communication system.Capacitance type potential transformer can be divided into capacitor voltage divider and electromagnetic unit two large divisions generally.Capacitor voltage divider is comprised of insulator and some series capacitors of being mounted in it, is full of the insulating oil that keeps pressure-fired in the insulator, and with steel corrugated pipe balance varying environment with the maintenance oil pressure; Electromagnetic unit is comprised of the intermediate transformer, compensation reactor, lightning arrester and the damping device that are contained in the leakproof fuel cell.Supporting intermediate transformer is the paper oil insulation pattern, and core material adopts laminate, and certainty of measurement is lower, and volume is larger.Because be to adopt oil-insulation, in long-term use procedure, insulating oil is prone to the impurity such as H2 gas, the moisture phenomenon that exceeds standard, and affect insulation property and equipment uses reliably.And the frequent Maintenance and Repair of complete set of equipments need, workload is larger.As the key equipment of capacitance type potential transformer, for further improving Supply Security, the intermediate transformer of supporting electromagnetic unit needs constantly to promote to improve.
The utility model content
There are the problems such as volume is large, certainty of measurement is low, easy oil impregnate, insulation is unstable, maintenance is complicated for the intermediate transformer that solves the supporting electromagnetic unit of prior art mesohigh and superhigh pressure electric capacity formula voltage transformer, the utility model provides a kind of capacitance type potential transformer electromagnetic unit intermediate transformer, realize that electromagnetic unit is the air insulation pattern, further improve the property safe and reliable to operation of high pressure and superhigh pressure electric capacity formula voltage transformer.
The technical scheme that the utility model adopts for achieving the above object is: a kind of capacitance type potential transformer electromagnetic unit intermediate transformer, comprise iron core, winding, secondary winding, wherein winding and secondary winding are with one heart on an insulation framework, and be sleeved on the iron core, be cast for the low-voltage insulation body by epoxide resin vacuum, one time winding connects a high-voltage connection terminal and a ground connection binding post of drawing the low-voltage insulation external body, and secondary winding connects the secondary wiring terminals of drawing the low-voltage insulation external body.
Described high-voltage connection terminal envelope is put in high voltage insulating column, and described high voltage insulating column is the drum of end sealing.
It is trapezoidal seal groove that described high voltage insulating column end face periphery has cross sectional shape.
A described ground connection binding post is put at ground insulation post wire by envelope and is drawn.
Described ground insulation post is positioned at the top of low-voltage insulation body.
Described ground insulation post outside is provided with the insulation full skirt.
Described secondary wiring terminals envelope is put in secondary terminal box.
Described secondary terminal box is rectangular shape, is positioned at the downside of low-voltage insulation body.
The side of described secondary terminal box is provided with a plurality of wire holes.
Two or more in described secondary terminal box, high-voltage connection terminal, high voltage insulating column, ground connection binding post, ground insulation post, low-voltage insulation body and the secondary wiring terminals are the integral type structure.
The utlity model has following advantage and beneficial effect:
1, volume is little, easy for installation: adopt the epoxide resin vacuum cast cured explosive and into a single integrated structure, volume is less, the drum high voltage insulating column of a high-voltage connection terminal, convenient be connected sealing with the capacitor voltage divider transition, be sealed in the cylinder insulating oil high-voltage connection terminal and make things convenient for capacitor voltage divider intermediate voltage leading-out terminal and link to each other.
2, high, the easy-to-connect of certainty of measurement: the ring structure iron core that adopts the high-quality permeability magnetic material, the product certainty of measurement is higher, comprise that the secondary box is provided with a lot of secondaries and a tap binding post, make things convenient for the debugging of secondary output error, the electrical connections such as other compensation reactor in the secondary terminal box side wire hole of optimal design, convenient and electromagnetic unit and damper.
3, moistureproof anti-condensation, insulation is stablized: adopt the epoxy resin pouring dry type structure, changed the oil-insulation mode that in the past adopted, in the long-term use procedure the insulation degradation phenomenon can not appear, the product insulation is very stable, the Full closed dry optimizing structure design, guarantee that product has the anti-condensation performance of reliable protection against the tide, the electrical leakage, discharge problem can not occur because of the condensation of product surface.
Description of drawings
Fig. 1 is the utility model external structure front view;
Fig. 2 is the utility model external structure left view;
Fig. 3 is the utility model internal structure front view.
Among the figure: 1, iron core; 2, winding; 3, secondary winding; 4, secondary terminal box; 5, high-voltage connection terminal; 6, high voltage insulating column; 7, seal groove; 8, ground connection binding post; 9, ground insulation post; 10, low-voltage insulation body; 11, insulation full skirt; 12, secondary wiring terminals; 13, wire hole.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As Figure 1-3, secondary winding 3 and winding 2 are concentric to be contained on iron core 1 post around an insulation framework upper rear set, through being fixed in the casting mold after insulation and the buffering wrapping, with epoxide resin vacuum cast, forming behind overcuring becomes one thereupon and is the integral type structure by a high-voltage connection terminal 5, a high voltage insulating column 6, ground connection binding post 8, ground insulation post 9, low-voltage insulation body 10, secondary wiring terminals 12, a secondary terminal box 4.The high voltage insulating column 6 that envelope is put a high-voltage connection terminal 5 is the drum of end sealing, is to be connected the sealing position with the capacitor voltage divider transition as electromagnetic unit.One time high-voltage connection terminal 5 links to each other with capacitor voltage divider intermediate voltage leading-out terminal, and is sealed in the insulating oil of cylinder interior.It is trapezoidal seal groove 7 that high voltage insulating column 6 end face peripheries have cross sectional shape, and embedding sealing bar when installing and using plays the effect of sealed capacitor voltage divider and electromagnetic unit, prevents that insulating oil leakage is in electromagnetic unit.Seal low-voltage insulation body 10 tops that the ground insulation post 9 of putting a ground connection binding post 8 is positioned at solid envelope iron core, make things convenient for wiring, which is provided with insulation full skirt 11, effectively increase insulation distance over the ground when testing.The secondary terminal box 4 that envelope is put secondary wiring terminals 12 is the cuboid form, its inside is distributed with several secondaries and a tap binding post, adjust wiring according to the second order error data when installing and using, reach the design error requirement, secondary terminal box and integral type employing poured with epoxy resin form and are positioned at the overall structure side lower part, convenient and other matched with devices.Secondary terminal box 4 sides are provided with several wire holes 13, link to each other with compensation reactor and damper etc. after drawing for the secondary lead-out wire.
This electromagnetic unit for capacitance type voltage transformer intermediate transformer is a kind of new product that designs according to national standard fully, employing rolls iron core, utilize the electromagnetic conversion principle, make the exactly situation of change of reflected measurement primary voltage of secondary electric pressure energy, be transferred to secondary measurement and control device, product can directly be matched in various capacitance type potential transformer devices.Product adopts the epoxide resin vacuum cast cured explosive to form integral structure, has the characteristics such as volume is little, convenient by filling, certainty of measurement is high, easy-to-connect, protection against the tide is anti-condensation, insulation is stable; Can be widely used in various model high pressure and superhigh pressure electric capacity formula voltage transformer equipment, improve the integral device designing and manufacturing level.
Claims (10)
1. capacitance type potential transformer electromagnetic unit intermediate transformer, it is characterized in that, comprise iron core (1), a winding (2), secondary winding (3), wherein a winding (2) and secondary winding (3) are with one heart on an insulation framework, and be sleeved on the iron core (1), be cast for low-voltage insulation body (10) by epoxide resin vacuum, a winding (2) connects draws low-voltage insulation body (10) outside a high-voltage connection terminal (5) and a ground connection binding post (8), and secondary winding (3) connects draws the outside secondary wiring terminals (12) of low-voltage insulation body (10).
2. capacitance type potential transformer electromagnetic unit intermediate transformer according to claim 1 is characterized in that, a described high-voltage connection terminal (5) envelope is put in high voltage insulating column (6), and described high voltage insulating column (6) is the drum of end sealing.
3. capacitance type potential transformer electromagnetic unit intermediate transformer according to claim 2 is characterized in that, it is trapezoidal seal groove (7) that described high voltage insulating column (6) end face periphery has cross sectional shape.
4. capacitance type potential transformer electromagnetic unit intermediate transformer according to claim 1 is characterized in that, a described ground connection binding post (8) is put at ground insulation post (9) wire by envelope and drawn.
5. capacitance type potential transformer electromagnetic unit intermediate transformer according to claim 4 is characterized in that, described ground insulation post (9) is positioned at the top of low-voltage insulation body (10).
6. capacitance type potential transformer electromagnetic unit intermediate transformer according to claim 4 is characterized in that, described ground insulation post (9) outside is provided with insulation full skirt (11).
7. capacitance type potential transformer electromagnetic unit intermediate transformer according to claim 1 is characterized in that, described secondary wiring terminals (12) envelope is put in secondary terminal box (4).
8. capacitance type potential transformer electromagnetic unit intermediate transformer according to claim 7 is characterized in that, described secondary terminal box (4) is rectangular shape, is positioned at the downside of low-voltage insulation body (10).
9. capacitance type potential transformer electromagnetic unit intermediate transformer according to claim 7 is characterized in that, the side of described secondary terminal box (4) is provided with a plurality of wire holes (13).
10. capacitance type potential transformer electromagnetic unit intermediate transformer according to claim 1, it is characterized in that two or more in described secondary terminal box (4), a high-voltage connection terminal (5), a high voltage insulating column (6), a ground connection binding post (8), ground insulation post (9), low-voltage insulation body (10) and the secondary wiring terminals (12) are the integral type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320259614 CN203250630U (en) | 2013-05-13 | 2013-05-13 | Capacitor voltage transformer electromagnetism unit intermediate transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320259614 CN203250630U (en) | 2013-05-13 | 2013-05-13 | Capacitor voltage transformer electromagnetism unit intermediate transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203250630U true CN203250630U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320259614 Expired - Fee Related CN203250630U (en) | 2013-05-13 | 2013-05-13 | Capacitor voltage transformer electromagnetism unit intermediate transformer |
Country Status (1)
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| CN (1) | CN203250630U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105513775A (en) * | 2015-12-18 | 2016-04-20 | 薛建仁 | Novel high voltage reactor |
| CN105742033A (en) * | 2014-12-10 | 2016-07-06 | 特变电工康嘉(沈阳)互感器有限责任公司 | Primary coil of CVT intermediate transformer and manufacturing method of primary coil |
| CN106128721A (en) * | 2016-08-15 | 2016-11-16 | 湖南华雄新材料有限公司 | A kind of CVT electromagnetic unit intermediate transformer |
| CN106128714A (en) * | 2016-08-15 | 2016-11-16 | 湖南华雄新材料有限公司 | A kind of Novel CVT dry-type electromagnetic unit |
| CN106373720A (en) * | 2016-11-07 | 2017-02-01 | 湖南大北互互感器有限公司 | Intermediate transformer of capacitor voltage transformer electromagnetic unit |
| CN110211783A (en) * | 2019-06-19 | 2019-09-06 | 江苏科瑞电气有限公司 | A kind of testing transformer |
| CN110379612A (en) * | 2019-07-22 | 2019-10-25 | 国网山东省电力公司电力科学研究院 | 10kV cast-type capacitance type potential transformer |
-
2013
- 2013-05-13 CN CN 201320259614 patent/CN203250630U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105742033A (en) * | 2014-12-10 | 2016-07-06 | 特变电工康嘉(沈阳)互感器有限责任公司 | Primary coil of CVT intermediate transformer and manufacturing method of primary coil |
| CN105513775A (en) * | 2015-12-18 | 2016-04-20 | 薛建仁 | Novel high voltage reactor |
| CN106128721A (en) * | 2016-08-15 | 2016-11-16 | 湖南华雄新材料有限公司 | A kind of CVT electromagnetic unit intermediate transformer |
| CN106128714A (en) * | 2016-08-15 | 2016-11-16 | 湖南华雄新材料有限公司 | A kind of Novel CVT dry-type electromagnetic unit |
| CN106373720A (en) * | 2016-11-07 | 2017-02-01 | 湖南大北互互感器有限公司 | Intermediate transformer of capacitor voltage transformer electromagnetic unit |
| CN106373720B (en) * | 2016-11-07 | 2018-06-01 | 湖南大北互互感器有限公司 | A kind of intermediate transformer of capacitance type potential transformer electromagnetic unit |
| CN110211783A (en) * | 2019-06-19 | 2019-09-06 | 江苏科瑞电气有限公司 | A kind of testing transformer |
| CN110211783B (en) * | 2019-06-19 | 2021-10-22 | 江苏科瑞电气有限公司 | Test transformer |
| CN110379612A (en) * | 2019-07-22 | 2019-10-25 | 国网山东省电力公司电力科学研究院 | 10kV cast-type capacitance type potential transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20210513 |