CN102354598A - Capacitive divider with medium voltage positioned at high-voltage side - Google Patents
Capacitive divider with medium voltage positioned at high-voltage side Download PDFInfo
- Publication number
- CN102354598A CN102354598A CN2011101802434A CN201110180243A CN102354598A CN 102354598 A CN102354598 A CN 102354598A CN 2011101802434 A CN2011101802434 A CN 2011101802434A CN 201110180243 A CN201110180243 A CN 201110180243A CN 102354598 A CN102354598 A CN 102354598A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- voltage
- medium
- voltage divider
- tension
- 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.)
- Granted
Links
Images
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention provides a capacitive divider with medium voltage positioned at the high-voltage side, which comprises a shell, the bottom of the shell is connected with a base, the top of the shell is connected with a cover, an expander is mounted on the bottom in the shell, and is connected with the base, a core is connected with the expander, the upper part of the core is connected with a capacitor C2, the cover is connected with a medium-voltage sleeve, the capacitor C2 is led to the medium-voltage sleeve from the upper part of the core, a low-voltage terminal of the capacitive divider is led out via a low-voltage sleeve mounted on the base, and the tapped medium voltage is positioned at the high-voltage end of the capacitive divider. Since the medium voltage tapped by the capacitive divider is positioned at the high-voltage side of the capacitive divider, the requirement of clients is met.
Description
Technical field
The present invention relates to a kind of AC transmission system voltage measuring apparatus, particularly a kind of intermediate voltage is positioned on high-tension side capacitor voltage divider.
Background technology
Capacitor voltage divider is exactly between high pressure and low pressure, to take out a voltage signal, to reach the purpose of high voltage measuring.
Existing capacitor voltage divider adopts stacked structure, and promptly capacitor voltage divider is stacked in and forms the open side type structure on the base.Intermediate voltage terminal of the low-voltage terminal of capacitor voltage divider and extraction all through be installed on the base in, low-tension bushing draws, intermediate voltage terminal is positioned at the product bottom.This structure is that existing capacitor voltage divider product is general.The middle pressure signal that it utilized is taken from low-voltage terminal and intermediate voltage terminal.
Yet because some cause specifics, having over the ground like series compensation device in the electric power system etc. in the device of insulating requirements has some equipment to need power supply; Because equipment is in the system high pressure end, insulation against ground requires very high, can't use conventional power supply; For this reason, need increase power supply at the high-pressure side of system.Like this, aforementioned existing capacitor voltage divider can not satisfy this demand.
For capacitor, the intermediate voltage of all capacitor voltage dividers all is to draw from the medium-tension bushing that is installed in base through intermediate voltage terminal, and the development of self-capacitance voltage divider all is like this in decades; Therefore, when the client proposes the demand, for the technical staff in the capacitor area; Think that all this is impossible realize, yet the inventor herein is through making great efforts constantly and research; Propose patent scheme of the present invention, can satisfy above-mentioned client's demand.
Summary of the invention
The invention provides a kind of intermediate voltage of in high-pressure side extracts, pressing and be positioned on high-tension side capacitor voltage divider, to meet customer need.
The technical scheme that the present invention adopted is: a kind of intermediate voltage is positioned on high-tension side capacitor voltage divider, comprises shell, and outer casing bottom is connected with base; Cover top portion is connected with lid, and the bottom of said enclosure is equipped with expander, and said expander is connected with base; Be connected with fuse on the expander; Fuse top is connected with capacitor C 2, is connected with medium-tension bushing on the said lid, and said capacitor C 2 is drawn out on the said medium-tension bushing by the top of fuse; The low-voltage terminal of said capacitor voltage divider is drawn through the low-tension bushing that is installed on the base, and the intermediate voltage of extraction is positioned at the high-pressure side of capacitor voltage divider.
Said shell adopts silicone rubber sleeve.
Said capacitor C 2 usefulness insulating papers coat, and its end face and middle pressure lead-out wire are isolated.
Add multilayer insulation between said center top and the medium-tension bushing.
Said medium-tension bushing adopts bushing insulator.
Intermediate voltage of the present invention is positioned on high-tension side capacitor voltage divider and has the following advantages at least: expander of the present invention is placed on sleeve bottom and is connected with base; Fuse is fixed on the expander; Capacitor C 2 is drawn out to the medium-tension bushing that covers by fuse top, and medium-tension bushing is fixed on and covers, and the low-voltage terminal N of capacitor voltage divider draws through the low-tension bushing that is installed on the base; Like this, the intermediate voltage of extraction is in the high-pressure side of product.Can be in electric power system series compensation device etc. to have the device of insulating requirements measuring-signal to be provided in the high-pressure side or between high-pressure side and intermediate voltage terminal, to insert transformer over the ground be that on high-tension side equipment provides power supply or measuring-signal.
Description of drawings
Fig. 1 is the structural representation of the capacitor voltage divider of routine;
Fig. 2 is the structural representation of capacitor voltage divider of the present invention.
Embodiment
Conventional capacitor voltage divider product structure is seen Fig. 1.The shell of capacitor voltage divider is generally the high tension insulator sleeve pipe; Internal structure generally is: fuse 3 directly is fixed on the base 1; Expander 4 is placed at the top of fuse 3; Fuse 3 all is immersed in the insulating oil with expander 4, and the capacitor C 2 of being drawn by the fuse bottom leads to the outside through the medium-tension bushing 2 that is installed on the base 1, and the low-voltage terminal N of capacitor voltage divider draws through the low-tension bushing 5 that is installed on the base 1.Like this, intermediate voltage is in the low-pressure end of product.
Capacitor voltage divider of the present invention comprises shell, and outer casing bottom is connected with base 1, and cover top portion is connected with lid; The bottom of said enclosure is equipped with expander 4; Said expander 4 is connected with base 1, is connected with fuse 3 on the expander 4, and fuse 3 tops are connected with capacitor C 2; Be connected with medium-tension bushing 2 on the said lid; Said capacitor C 2 is drawn out on the said medium-tension bushing by the top of fuse, and the low-voltage terminal of said capacitor voltage divider is drawn through the low-tension bushing 5 that is installed on the base, and the intermediate voltage of extraction is positioned at the high-pressure side of capacitor voltage divider.
Said shell adopts silicone rubber sleeve; Expander 4 is placed on sleeve bottom and is connected with base 1, and fuse 3 is fixed on the expander 4, and capacitor C 2 is drawn out to the medium-tension bushing 2 that covers by fuse top; Medium-tension bushing 2 is fixed on and covers, and the intermediate voltage of extraction is in the high-pressure side of product.The low-voltage terminal N of capacitor voltage divider draws through the low-tension bushing 5 that is installed on the base.
For the capacitor voltage divider of routine, to draw from low-pressure side because of the intermediate voltage that extracts, its interior capacitor center is fixed on the low-pressure side cover plate, and the connecting line of intermediate voltage terminal can connect to refill and fit in the sleeve pipe, and inner dilator is in top and high-pressure side.Intermediate voltage terminal of this mode is easy to solve to the insulation of low-voltage terminal, need not do too much consideration.
And for intermediate voltage when high-pressure side is drawn; The Insulation Problems of capacitor voltage divider inside is most important; Press in of the present invention to be positioned at the high-pressure side, (110/ √ 3kV) draws the intermediate voltage of extraction (10kV) from the high-pressure side, and promptly the intermediate voltage of nominal is 10kV between HV Terminal and intermediate voltage terminal.To this, at first on internal structure, change, expander has been placed on the bottom; Center is fixed on the expander cover, in the insulation of inside, considers that the intermediate voltage lead-out wire that on center, extracts needs to lead in the air through medium-tension bushing; At first adopt the mode of capacitor C 2 set of pieces being carried out integral insulation; The C2 set of pieces is all risen with the insulation paper bag, element end face and middle pressure lead-out wire are isolated, guarantee safety; Secondly because medium-tension bushing lower end and center top (high-pressure side) distance are near; The voltage pressure reduction here is big, and discharge mutually easily causes damage of product when coming into operation; So the insulation of this part is most important; Be employed in the method that installs multilayer insulation between center top and the medium-tension bushing additional here, utilize insulating barrier that two ends are thoroughly blocked, remove a hidden danger.In the insulation externally, consider that intermediate voltage terminal need be exposed in the air now,, play good insulating effect so adopted the high high tension insulator sleeve pipe of dielectric strength.
The above is merely one embodiment of the present invention; It or not whole or unique execution mode; The conversion of any equivalence that those of ordinary skills take technical scheme of the present invention through reading specification of the present invention is claim of the present invention and contains.
Claims (5)
1. an intermediate voltage is positioned on high-tension side capacitor voltage divider, it is characterized in that: comprise shell, outer casing bottom is connected with base (1); Cover top portion is connected with lid, and the bottom of said enclosure is equipped with expander (4), and said expander (4) is connected with base; Be connected with fuse (3) on the expander (4); Fuse (3) top is connected with capacitor C 2, is connected with medium-tension bushing (2) on the said lid, and said capacitor C 2 is drawn out on the said medium-tension bushing (2) by the top of fuse (3); The low-voltage terminal of said capacitor voltage divider is drawn through the low-tension bushing (5) that is installed on the base, and the intermediate voltage of extraction is positioned at the high-pressure side of capacitor voltage divider.
2. a kind of intermediate voltage as claimed in claim 1 is positioned on high-tension side capacitor voltage divider, it is characterized in that: said shell adopts silicone rubber sleeve.
3. a kind of intermediate voltage as claimed in claim 1 is positioned on high-tension side capacitor voltage divider, it is characterized in that: said capacitor C 2 usefulness insulating papers coat, and its end face and middle pressure lead-out wire are isolated.
4. a kind of intermediate voltage as claimed in claim 3 is positioned on high-tension side capacitor voltage divider, it is characterized in that: add multilayer insulation between said center top and the medium-tension bushing.
5. a kind of intermediate voltage as claimed in claim 4 is positioned on high-tension side capacitor voltage divider, it is characterized in that: said medium-tension bushing adopts bushing insulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110180243 CN102354598B (en) | 2011-06-30 | 2011-06-30 | Capacitive divider with medium voltage positioned at high-voltage side |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110180243 CN102354598B (en) | 2011-06-30 | 2011-06-30 | Capacitive divider with medium voltage positioned at high-voltage side |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102354598A true CN102354598A (en) | 2012-02-15 |
| CN102354598B CN102354598B (en) | 2013-04-10 |
Family
ID=45578138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110180243 Active CN102354598B (en) | 2011-06-30 | 2011-06-30 | Capacitive divider with medium voltage positioned at high-voltage side |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102354598B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810873A (en) * | 2012-08-28 | 2012-12-05 | 西安布伦帕电力无功补偿技术有限公司 | Stable power supply equipment for series compensation device and control and protection system thereof |
| CN103595291A (en) * | 2013-11-22 | 2014-02-19 | 国家电网公司 | On-line energy-gaining system of high-voltage series voltage compensation device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201600108161A1 (en) * | 2016-10-26 | 2018-04-26 | Tesmec Spa | VOLTAGE AND VOLTAGE CURRENT MEASURING DEVICE IN MEDIUM VOLTAGE ACCESSORIES |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508819A (en) * | 2002-12-17 | 2004-06-30 | 王日新 | Dry capacitor type voltage transformer |
| US20080092355A1 (en) * | 2004-05-28 | 2008-04-24 | Maxwell Technologies, Inc. | Method of processing high voltage capacitors |
| CN201072701Y (en) * | 2007-08-15 | 2008-06-11 | 无锡市锡容电力电器厂 | Capacitive potential divider |
| CN101299387A (en) * | 2008-03-11 | 2008-11-05 | 徐文 | Combined high-tension current potential transformer |
| CN201877276U (en) * | 2010-11-15 | 2011-06-22 | 河南省电力公司许昌供电公司 | Gas-insulating electronic voltage transformer |
-
2011
- 2011-06-30 CN CN 201110180243 patent/CN102354598B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508819A (en) * | 2002-12-17 | 2004-06-30 | 王日新 | Dry capacitor type voltage transformer |
| US20080092355A1 (en) * | 2004-05-28 | 2008-04-24 | Maxwell Technologies, Inc. | Method of processing high voltage capacitors |
| CN201072701Y (en) * | 2007-08-15 | 2008-06-11 | 无锡市锡容电力电器厂 | Capacitive potential divider |
| CN101299387A (en) * | 2008-03-11 | 2008-11-05 | 徐文 | Combined high-tension current potential transformer |
| CN201877276U (en) * | 2010-11-15 | 2011-06-22 | 河南省电力公司许昌供电公司 | Gas-insulating electronic voltage transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810873A (en) * | 2012-08-28 | 2012-12-05 | 西安布伦帕电力无功补偿技术有限公司 | Stable power supply equipment for series compensation device and control and protection system thereof |
| CN103595291A (en) * | 2013-11-22 | 2014-02-19 | 国家电网公司 | On-line energy-gaining system of high-voltage series voltage compensation device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102354598B (en) | 2013-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102354598B (en) | Capacitive divider with medium voltage positioned at high-voltage side | |
| CN201549358U (en) | High-capacity voltage transformer capable of reducing local electric discharge | |
| CN104465025A (en) | Improved structure of oil-immersed transformer with current transformer | |
| CN110088859A (en) | Combination instrument mutual inductor for high-voltage applications | |
| CN102496447B (en) | Electronic single-phase current voltage transformer for gas insulated metal-closed switchgear | |
| CN104752039B (en) | A kind of 132kV double windings ULTC insulation system | |
| CN207282324U (en) | Capacitance type potential transformer voltage-dividing capacitor | |
| CN208672702U (en) | The capacitive voltage transformer of high pressure dry | |
| CN104868753B (en) | A kind of compact closed gas isolated dc high pressure generator | |
| CN101968992B (en) | Railway traction transformer | |
| CN201698884U (en) | Shielded isolation voltage mutual inductor | |
| CN107545998B (en) | Isolation transformer | |
| CN203799852U (en) | Indoor voltage transformer | |
| CN204668129U (en) | A kind of few oil type voltage transformer | |
| CN109935460A (en) | A kind of capacitance type potential transformer | |
| CN207558550U (en) | A kind of isolating transformer | |
| CN203733594U (en) | Main insulating structure of power distribution transformer | |
| CN102945739A (en) | Power-frequency single-phase resonant transformer for calibration and boosting of voltage transformer | |
| CN207068626U (en) | Dry-type high-voltage transformer sleeve pipe | |
| CN201266540Y (en) | Epoxy insulation sheath voltage mutual inductor | |
| CN204857414U (en) | Oil formula transformer | |
| CN220456211U (en) | Top outlet structure suitable for extra-high voltage transformer | |
| CN203433027U (en) | A coupling capacitive voltage divider medium-voltage binding post | |
| CN204597789U (en) | A kind of compact closed gas isolated dc high pressure generator | |
| CN203205223U (en) | Integrated high-low voltage coil of distribution 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 |