CN201594465U - Electronic high-voltage direct current transformer - Google Patents
Electronic high-voltage direct current transformer Download PDFInfo
- Publication number
- CN201594465U CN201594465U CN2009202459863U CN200920245986U CN201594465U CN 201594465 U CN201594465 U CN 201594465U CN 2009202459863 U CN2009202459863 U CN 2009202459863U CN 200920245986 U CN200920245986 U CN 200920245986U CN 201594465 U CN201594465 U CN 201594465U
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- high voltage
- direct current
- current transformer
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- optical fiber
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Abstract
The utility model relates to the field of high-voltage current measurement, and discloses an electronic high-voltage direct current transformer, which comprises a base, an optical fiber insulator disposed on the base, a high voltage module box disposed at the top of the optical fiber insulator, a high voltage casing disposed at the top of the high voltage module box, and a shunt and a hollow coil which are disposed inside the high voltage casing. The electronic high-voltage direct current transformer is characterized in that a spherical crowned shield is fixed outside of the high voltage module box, and the high voltage module box and the high voltage casing are arranged inside the shield.
Description
Technical field
Type of the present invention relates to the high-voltage direct current fields of measurement, relates in particular to a kind of electronic type high voltage direct current current transformer.
Technical background
At present, still adopt traditional electromagnetic type DC current transformer in the most DC transmission system, but, fast development along with DC transmission engineering, power consumer wishes to use that structure is more reliable, operation and maintenance is simpler, combination property is good quality production more, and electronic type high voltage direct current current transformer arises at the historic moment.The electric pressure of DC transmission engineering is more and more higher, has reached 800kV, and insulation, electromagnetic shielding, electromagnetic compatibility become the bottleneck problem that electronic type high voltage direct current current transformer further develops.
Summary of the invention
The purpose of type of the present invention is to provide a kind of a kind of electronic type high voltage direct current current transformer reliable, that shielding is good that insulate, and can be applicable to the 800kV DC transmission system.
In order to achieve the above object, type of the present invention is achieved by the following technical solutions.
A kind of electronic type high voltage direct current current transformer, comprise base, be arranged on the optical fiber insulator on the base, be arranged on the high-pressure modular case at optical fiber insulator top, be arranged on the high pressure body of high-pressure modular box top, and be arranged on shunt and air core coil in the high pressure body; It is characterized in that the described high-pressure modular case outside is fixed with the radome of spherical crown shape, the high-pressure modular case and the high pressure body are positioned at radome.
The further improvement and the characteristics of this real inventing type are:
The base of described radome inwardly with behind the level and smooth turnup of circular arc downwards with the level and smooth turnup of circular arc, wherein inwardly the arc radius of level and smooth turnup greater than the arc radius of level and smooth turnup downwards.
The plane that the minimum point of described radome constitutes is concordant or be higher than optical fiber insulator umbrella cover topmost.
In this real inventing type, the high-pressure modular case outside is fixed with the radome of spherical crown shape, the high-tension shielding case and the high pressure body are positioned at radome, radome has all pressure effects to the space outerpace of the high-tension shielding case and the high pressure body, can improve electric field, place discharge, simultaneously can also shielding electromagnetic wave, improve certainty of measurement.
In addition, the base of radome inwardly with behind the level and smooth turnup of circular arc downwards with the level and smooth turnup of circular arc, wherein inwardly the arc radius of level and smooth turnup greater than the arc radius of level and smooth turnup downwards; The plane that the minimum point of radome constitutes is higher than topmost umbrella cover of optical fiber insulator or concordant; Further improve the opening part on base of radome and the electric field of high-pressure modular case and optical fiber insulator junction, improved the insulation effect of optical fiber insulator.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further details.
Fig. 1 is the structural representation of a kind of 800kV electronic type high voltage direct current current transformer of type of the present invention.
Embodiment
With reference to Fig. 1,, mainly comprise base 4, optical fiber insulator 3, high-pressure modular case 2, the high pressure body 1, radome 6 and low-voltage module case 5 for 800kV electronic type high voltage direct current current transformer.Be provided with low-voltage module case 5 in the base 4, fixed fiber insulator 3 on the base 1, optical fiber insulator 3 tops are high-pressure modular case 2 fixedly, and high-pressure modular is connected by the optical fiber that is positioned at optical fiber insulator 3 centers with low-voltage module.High-pressure modular case 2 tops are the high pressure body 1 fixedly, and shunt and air core coil (not shown) are set in the high pressure body 1, and shunt is measured the direct current of primary circuit, and air core coil is measured the harmonic current of primary circuit; Dc current measurement signal, harmonic current measuring-signal are collected to high-pressure modular carry out the conversion of preliminary treatment and electric light after, reach low-voltage module by optical fiber.
Radome 6 is the spherical crown shape, its base inwardly with behind the level and smooth turnup of circular arc downwards with the level and smooth turnup of circular arc, wherein inwardly the arc radius of level and smooth turnup greater than the arc radius of level and smooth turnup downwards.The outside of high voltage block case 2 is fixed with the fixed head that level is stretched out, fixed head is fixed on inside part with the level and smooth turnup of circular arc, the plane of the minimum point of radome formation is concordant with optical fiber insulator umbrella cover topmost simultaneously, and the high-pressure modular case 2 and the high pressure body 1 are positioned at radome 6.Like this, both reach the effect of all pressing shielding, and can save the material of radome 6 again; Certainly, the plane that the minimum point of radome 6 constitutes also can be higher than optical fiber insulator 3 umbrella cover end face topmost, can reach the effect of all pressing shielding equally, but the diameter of radome 6 can increase, material expends slightly many, and the height of post insulator 6 might require to increase.
Present embodiment has improved the electric field environment and the extra-high-speed pressure side electric field of shunt and air core coil, avoid producing extra-heavy high voltage electric field and partial discharge phenomenon, and power consumption is less, and the class of accuracy height is measured level and reached 0.5 grade, protected level and reach the 5P level.
Claims (3)
1. electronic type high voltage direct current current transformer, comprise base, be arranged on the optical fiber insulator on the base, be arranged on the high-pressure modular case at optical fiber insulator top, be arranged on the high pressure body of high-pressure modular box top, and be arranged on shunt and air core coil in the high pressure body; It is characterized in that the described high-pressure modular case outside is fixed with the radome of spherical crown shape, the high-pressure modular case and the high pressure body are positioned at radome.
2. a kind of electronic type high voltage direct current current transformer according to claim 1, it is characterized in that, the base of described radome inwardly with behind the level and smooth turnup of circular arc downwards with the level and smooth turnup of circular arc, wherein inwardly the arc radius of level and smooth turnup greater than the arc radius of level and smooth turnup downwards.
3. a kind of electronic type high voltage direct current current transformer according to claim 1 is characterized in that, the plane that the minimum point of described radome constitutes is concordant or be higher than optical fiber insulator umbrella cover topmost.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202459863U CN201594465U (en) | 2009-12-25 | 2009-12-25 | Electronic high-voltage direct current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202459863U CN201594465U (en) | 2009-12-25 | 2009-12-25 | Electronic high-voltage direct current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201594465U true CN201594465U (en) | 2010-09-29 |
Family
ID=42776534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202459863U Expired - Lifetime CN201594465U (en) | 2009-12-25 | 2009-12-25 | Electronic high-voltage direct current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201594465U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928641A (en) * | 2012-10-31 | 2013-02-13 | 南京江北自动化技术有限公司 | Electronic current transformer |
| CN104505236A (en) * | 2014-12-18 | 2015-04-08 | 西安交通大学 | Shielding case at tail of condenser bushing on +/-400kV converter transformer valve side |
| CN112611901A (en) * | 2020-12-03 | 2021-04-06 | 国网浙江省电力有限公司电力科学研究院 | Shielding device for current transformer end screen current test |
-
2009
- 2009-12-25 CN CN2009202459863U patent/CN201594465U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928641A (en) * | 2012-10-31 | 2013-02-13 | 南京江北自动化技术有限公司 | Electronic current transformer |
| CN104505236A (en) * | 2014-12-18 | 2015-04-08 | 西安交通大学 | Shielding case at tail of condenser bushing on +/-400kV converter transformer valve side |
| CN112611901A (en) * | 2020-12-03 | 2021-04-06 | 国网浙江省电力有限公司电力科学研究院 | Shielding device for current transformer end screen current test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100929 |
|
| CX01 | Expiry of patent term |