CN201060735Y - Positive and negative 500kV DC current sensor - Google Patents
Positive and negative 500kV DC current sensor Download PDFInfo
- Publication number
- CN201060735Y CN201060735Y CNU2006201649195U CN200620164919U CN201060735Y CN 201060735 Y CN201060735 Y CN 201060735Y CN U2006201649195 U CNU2006201649195 U CN U2006201649195U CN 200620164919 U CN200620164919 U CN 200620164919U CN 201060735 Y CN201060735 Y CN 201060735Y
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- insulator
- winding
- supporting insulator
- secondary winding
- supporting
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Abstract
The utility model relates to a plus or minus 500 kV direct current sensor for direct current power transmission, which is characterized in that: coaxial column structure with uniform electric field distribution is adopted between the primary winding (2) and the secondary winding (1), and between the secondary winding (1) and the high-potential casing (3); high-voltage shielding (6) and intermediate shielding (7) are positioned between the intra-cavity end face of the compound insulator (5) and the secondary wire shielded-plate tube (8); the high-potential casing is arranged on the compound insulator (5) and the compound insulator (10); a secondary wiring disc, a sulfur hexafluoride gas densitometer and a valve are arranged in a base (1). Compared with alternating current transmission system, the utility model has the advantages of supervoltage long-distance transmission, cable transmission, non-synchronous networking direct current transmission, and other excellences.
Description
Technical field
The utility model relates to High-Voltage Electrical Appliances direct current transportation equipment, particularly a kind of direct current transportation usefulness ± 500kV DC current sensor.
Background technology
Along with the increase that exchanges transmission capacity, the growth of circuit distance and electric network composition complicated, problems such as stable, the limiting short-circuit current of AC system, pressure regulation become increasingly conspicuous.And direct current transportation has demonstrated at aspects such as high-power superhigh pressure long distance power transmission, cable power transmission and the non-same period of networkings than exchanging more advantage.
The transmission capacity that exchanges long distance powedr transmission is subjected to the restriction of synchronous operation stability, send electricity from the continent to island with cable, and its capacitance current is big especially, and terminal voltage is high to the unacceptable degree of people, so ac cable send electricity to be subjected to the restriction of cable length.And direct current transportation does not have this problem.Direct current transportation can connect frequency two AC network different with voltage, and circuit direct current loss simultaneously is little, does not have reactive loss, and transmission capacity can be very big, therefore economic and reliable more.
Summary of the invention
A kind of ± 500kV DC current sensor that the purpose of this utility model provides so that reach the direct current transportation of superhigh pressure long distance power transmission, cable power transmission and the non-same period of networking, carries than AC system to have more advantage.
The purpose of this utility model is to realize like this, ± 500kV DC current sensor, which comprises at least the body 3, composite insulator 5, composite insulator 10, supporting insulator and base 11, one time winding 2 passes from the geometric center of secondary winding 1, and winding 2 and secondary winding 1 place the top of the body 3; Main insulation is sulfur hexafluoride gas, is closed in the body 3, it is characterized in that: between winding 2 and the secondary winding 1, adopted Electric Field Distribution than uniform coaxial cylindrical structure between secondary winding 1 and the high potential body 3; Between resonator end surface and the secondary line shielded-plate tube 8 high-tension shielding 6 and intershield 7 are arranged in the composite insulator 5; The body of high potential places on composite insulator 5, the composite insulator 10, and quadric patch board, sulfur hexafluoride gas density meter, valve are set in the base 11.
Supporting insulator has two, supporting insulator 4 and supporting insulator 9, and they link together by secondary line shielded-plate tube 8 directions respectively one on the other on the contrary; Supporting insulator 4 is at the body 3 inner chambers, and the top of supporting insulator 4 is the little ends of diameter, and the bottom is the big end of diameter, and the top of supporting insulator 4 and secondary winding 1 are connected by screw; The bottom of supporting insulator 4 is connected with composite insulator 5 junctions with the body 3; Supporting insulator 9 is connected its lower end by secondary line shielded-plate tube 8.
Characteristics of the present utility model are between winding and the secondary winding, adopted Electric Field Distribution coaxial cylindrical structure uniformly between secondary winding and the high potential body, and the Electric Field Distribution uniformity is more satisfactory.Non-uniform electric between the upper flange junction of the lower flange of the body and post insulator and the secondary winding outlet shielded-plate tube so increased inner shield when product design, makes herein that electric field is improved, and becomes coaxial cylindrical electric field uniformly.
Direct current transportation usefulness ± 500kV current transformer adopts SF
6Gas is as main insulation medium, SF
6Adopt non-uniform electric field (as the concentric cylinder electric field) slightly in the electric equipment mostly, so that bring into play SF preferably
6The insulation characterisitic of gas.Electric field structure adopts concentric cylinder in the utility model, and solid insulation is the disc insulator of composite insulator and epoxy casting, and in order to improve composite insulator upper flange Electric Field Distribution, the composite insulator upper end has increased high-tension shielding.Between high potential and earth potential, adopt multilayer screen, to improve Electric Field Distribution,, capacitive field and resistive field are calculated respectively by Electromagnetic Calculation software, and in conjunction with developing the experience that exchanges the accumulation of 500kV current transformer, electric field is optimized design, determines best insulation system, by the verification experimental verification of model machine, all Insulation Tests are all once passed through, insulation level surpasses international like product, and the insulation system that product is described is reasonably, reliably.
Description of drawings
The utility model is described in further detail below in conjunction with the embodiment accompanying drawing.
Fig. 1 is the structural representation of the utility model embodiment ± 500kV DC current sensor.
Among the figure: 1, secondary winding; 2, winding; 3, the body; 4, supporting insulator; 5, composite insulator; 6, high-tension shielding; 7, intershield; 8, secondary line shielded-plate tube; 9, supporting insulator; 10, composite insulator; 11, base.
Embodiment
Embodiment as shown in Figure 1, the 500kV DC current sensor, it passes a winding 2 from the geometric center of secondary winding 1, winding 2 and secondary winding 1 place the top of the body 3; Main insulation is sulfur hexafluoride gas, is closed in the body 3, so that bring into play SF preferably
6The insulation characterisitic of gas.Between winding 2 and the secondary winding 1, adopted Electric Field Distribution coaxial cylindrical structure uniformly between secondary winding 1 and the high potential body 3; The Electric Field Distribution uniformity is more satisfactory.Supporting insulator has two, i.e. supporting insulator 4 and supporting insulator 9, and they link together by secondary line shielded-plate tube 8 directions respectively one on the other on the contrary; Supporting insulator 4 is at the body 3 inner chambers, and the top of supporting insulator 4 is the little ends of diameter, and the bottom is the big end of diameter, and the top of supporting insulator 4 and secondary winding 1 are connected by screw; The bottom of supporting insulator 4 is connected with composite insulator 5 junctions with the body 3; Supporting insulator 9 is connected its lower end by secondary line shielded-plate tube 8; Between resonator end surface and the secondary line shielded-plate tube 8 high-tension shielding 6 and intershield 7 are arranged in the composite insulator 5; Make herein that electric field is improved, become coaxial cylindrical electric field uniformly.The body of high potential places on composite insulator 5, the composite insulator 10, and quadric patch board, sulfur hexafluoride gas density meter, valve etc. are set in the base 11.
Claims (2)
1. ± the 500kV DC current sensor, which comprises at least the body (3), composite insulator (5), (10), supporting insulator and base (11), a winding (2) passes from the geometric center of secondary winding (1), and a winding (2) and secondary winding (1) place the top of the body (3); The main insulation medium is a sulfur hexafluoride gas, is closed in the body (3), it is characterized in that: between its winding (2) and secondary winding (1), adopted Electric Field Distribution coaxial cylindrical structure uniformly between secondary winding (1) and the high potential body (3); High-tension shielding (6) and intershield (7) are arranged between interior resonator end surface of composite insulator (5) and the secondary line shielded-plate tube (8); The body of high potential places on composite insulator (5), the composite insulator (10), and quadric patch board, sulfur hexafluoride gas density meter, valve are set in the base (11).
2. according to claim 1 ± the 500kV DC current sensor, it is characterized in that: described supporting insulator has two, supporting insulator (4) and supporting insulator (9), they link together by secondary line shielded-plate tube (8) direction respectively one on the other on the contrary; Supporting insulator (4) is at the body (3) inner chamber, and the top of supporting insulator (4) is the little end of diameter, and the bottom is the big end of diameter, and the top of supporting insulator (4) is connected by screw with secondary winding (1); The bottom of supporting insulator (4) is connected with composite insulator (5) junction with the body (3); Supporting insulator (9) is connected its lower end by secondary line shielded-plate tube (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201649195U CN201060735Y (en) | 2006-12-31 | 2006-12-31 | Positive and negative 500kV DC current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201649195U CN201060735Y (en) | 2006-12-31 | 2006-12-31 | Positive and negative 500kV DC current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201060735Y true CN201060735Y (en) | 2008-05-14 |
Family
ID=39409220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201649195U Expired - Lifetime CN201060735Y (en) | 2006-12-31 | 2006-12-31 | Positive and negative 500kV DC current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201060735Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102113189A (en) * | 2008-07-30 | 2011-06-29 | Abb研究有限公司 | High voltage AC/DC or DC/AC converter station with fiberoptic current sensor |
| WO2014005407A1 (en) * | 2012-07-03 | 2014-01-09 | 宁夏电力公司电力科学研究院 | High-voltage sulfur hexafluoride gas-insulation current transformer |
| CN111199825A (en) * | 2019-12-25 | 2020-05-26 | 河南平高电气股份有限公司 | Current transformer |
| CN113589215A (en) * | 2021-08-09 | 2021-11-02 | 武汉磐电科技股份有限公司 | 110kV voltage transformer's on-vehicle calibration equipment and calibration pick up car |
-
2006
- 2006-12-31 CN CNU2006201649195U patent/CN201060735Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102113189A (en) * | 2008-07-30 | 2011-06-29 | Abb研究有限公司 | High voltage AC/DC or DC/AC converter station with fiberoptic current sensor |
| CN102113189B (en) * | 2008-07-30 | 2014-10-29 | Abb研究有限公司 | High voltage AC/DC or DC/AC converter station with fiberoptic current sensor |
| WO2014005407A1 (en) * | 2012-07-03 | 2014-01-09 | 宁夏电力公司电力科学研究院 | High-voltage sulfur hexafluoride gas-insulation current transformer |
| CN111199825A (en) * | 2019-12-25 | 2020-05-26 | 河南平高电气股份有限公司 | Current transformer |
| CN113589215A (en) * | 2021-08-09 | 2021-11-02 | 武汉磐电科技股份有限公司 | 110kV voltage transformer's on-vehicle calibration equipment and calibration pick up car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080514 Effective date of abandoning: 20061231 |