CN102109590A - Solid foaming insulation direct-current standard voltage divider for extra-high voltage field - Google Patents
Solid foaming insulation direct-current standard voltage divider for extra-high voltage field Download PDFInfo
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- CN102109590A CN102109590A CN2011100218385A CN201110021838A CN102109590A CN 102109590 A CN102109590 A CN 102109590A CN 2011100218385 A CN2011100218385 A CN 2011100218385A CN 201110021838 A CN201110021838 A CN 201110021838A CN 102109590 A CN102109590 A CN 102109590A
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- 238000009413 insulation Methods 0.000 title claims abstract description 42
- 239000007787 solid Substances 0.000 title claims abstract description 19
- 238000005187 foaming Methods 0.000 title abstract 4
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract 3
- 238000012795 verification Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The invention discloses a solid foaming insulation direct-current standard voltage divider for an extra-high voltage field and belongs to a direct-current standard voltage divider for calibration and verification of a direct-current voltage transformer. The direct-current standard voltage divider consists of multiple stages of high-voltage resistors which perform series operation and have the same structure; in each stage of high-voltage resistor, an inner-layer measurement resistor and an outer-layer shielding resistor consist of the same resistor components which are connected in series respectively, and are fixed on an insulation inner cylinder through insulation supporting rods, and the inner-layer measurement resistor and the outer-layer shielding resistor are spirally arranged around the insulation inner cylinder respectively; a signal lead-out terminal is arranged on the inner-layer measurement resistor of the lowest stage of the high-voltage resistor; and an outer cylinder and the insulation inner cylinder are arranged in the same axis, and a solid foaming insulation medium is filled between the outer cylinder and the insulation inner cylinder. The solid foaming insulation direct-current standard voltage divider has high accuracy and can be easily transported and assembled on site to be used.
Description
Technical field
The present invention relates to the calibration equipment of DC voltage transformer, particularly a kind of extra-high voltage of solid foamed insulation is on-the-spot uses the direct current standard voltage divider, is used for calibration, calibrating and detection to DC voltage transformer in the direct current electrical changing station.
Background technology
Set up many DC power transmission line at present, will build more DC power transmission line later on.DC voltage transformer in the direct current transportation is a visual plant of measuring DC voltage, for safety, the stable operation of DC transmission system provides control, guard signal.In order to guarantee the DC voltage transformer measuring-signal accurately and reliably, certificate test and periodic calibration test before need installing DC voltage transformer.The standard voltage divider that is used for DC converter station on-site proving/calibration DC voltage transformer generally adopts oily medium insulation, but this can increase the weight of equipment, is unfavorable for long-distance transportation and assembled on site; Gas-insulated is adopted with standard voltage divider in the scene that also has, though this can alleviate the weight of equipment, air seal requires than higher, makes to be easy to the device structure complexity damage in long-distance transport and on-the-spot the installation.
Summary of the invention
The invention provides a kind of higher accuracy that has, be easy to transport for long-distance and the on-the-spot direct current standard voltage divider of using of the extra-high voltage of field-installed a kind of solid foamed insulation.
The object of the present invention is achieved like this: the on-the-spot direct current standard voltage divider of using of a kind of extra-high voltage of solid foamed insulation, form by tandem working, multistage high-tension resistive that structure is identical, every grade of high-tension resistive structure is: internal layer measuring resistance and outer shielding resistance are formed by the same resistance element connected in series and are fixed on the insulation inner core through the insulation support bar, and internal layer measuring resistance and outer shielding resistance all in the shape of a spiral shape arrange around the insulation inner core; The internal layer measuring resistance of subordinate high-tension resistive is provided with the signal leading-out terminal; Urceolus and insulation inner core are filled with solid between urceolus and the insulation inner core and send out insulating medium along same axis setting.
The resistive element that above-mentioned internal layer measuring resistance and outside shielding resistance adopt is the metalfilmresistor of 6M Ω.
Above-mentioned insulating support rod is organic glass insulating support rod or teflon insulation support bar.
The extra-high voltage scene is with the multistage operated in series connection of direct current standard voltage divider, employing double-layer spiral electric resistance structure and utilize solid foamed to do the insulation medium.The on-the-spot high-tension resistive identical by multilevel hierarchy with the direct current standard voltage divider, that rated voltage is lower, volume is less of extra-high voltage is contacted, lowermost one-level resistance is drawn different signal leading-out terminals according to application requirements, and other high-tension resistives need not to draw the signal leading-out terminal.Each grade resistance is connected in series by two-layer co-axially fixed same resistance element, internal layer is for measuring layer, skin is a screen layer, the support bar that two-layer serial resistance element is made with high insulation resistance material is fixed on the inner core, and shape is arranged around inner core in the shape of a spiral, and inner core also adopts high insulation resistance material.Adopt the high expanded material of insulation resistance to fill between inner core and the urceolus, expanded material solidifies the back and forms the solid filled media.
The invention has the beneficial effects as follows: the present invention provides a kind of standard for the on-site proving/calibration test of extra-high voltage direct-current mutual inductor, can carry out on-site proving/calibration test to the extra-high voltage direct-current mutual inductor, the problem that quantities is big, equipment is difficult for the transportation assembling when having solved DC voltage transformer on-site proving/calibration provides assurance accurately and reliably for the DC voltage transformer measuring-signal.
Description of drawings
Fig. 1 is an embodiment of the invention structured flowchart.
Embodiment
Be described further with the direct current standard voltage divider the extra-high voltage of solid foamed insulation of the present invention is on-the-spot below in conjunction with drawings and Examples.
Mark among Fig. 1: 1, insulation inner core; 2, insulating support rod; 3, measure layer resistance; 4, screen layer resistance; 5, solid foamed insulating medium; 6, urceolus; 7, subordinate high-tension resistive; 8, signal leading-out terminal; 9, intergrade high-tension resistive; 10, higher level's high-tension resistive.
Fig. 1 illustrates (only illustrating three grades), form by tandem working, multistage high-tension resistive that structure is identical, every grade of high-tension resistive structure is: internal layer measuring resistance 3 and outer shielding resistance 4 are formed by the same resistance element connected in series and are fixed on the insulation inner core 1 through the insulation support bar, and internal layer measuring resistance 3 and outer shielding resistance 4 all in the shape of a spiral shape arrange around the insulation inner core; The internal layer measuring resistance of subordinate high-tension resistive is provided with signal leading-out terminal 8; Urceolus 6 and insulation inner core are filled with solid between urceolus and the insulation inner core and send out insulating medium 5 along same axis setting.
Fig. 1 illustrates, subordinate high-tension resistive 7, intergrade high-tension resistive 9 and higher level's high-tension resistive 10.Identical (the screen layer effect: 1, increase the anti-interference of voltage divider of structure of the structure of intergrade high-tension resistive 9 and higher level's high-tension resistive 10 and subordinate high-tension resistive 7 to proximity effect; 2, reduce resistance operation surface electric field intensity, reduce corona and space conduction current).Subordinate high-tension resistive 7 is provided with signal leading-out terminal 8.Intergrade high-tension resistive 9(is more than the one-level) between subordinate high-tension resistive 7 and higher level's high-tension resistive 10.
High direct voltage is applied to the top of higher level's high-tension resistive 10, and by the electric resistance partial pressure principle, intergrade high-tension resistive 9 and subordinate high-tension resistive 7 bear certain voltage, subordinate high-tension resistive draw signal terminal 8 by certain intrinsic standoff ratio output low-voltage signal.
The resistive element that internal layer measuring resistance 3 and outside shielding resistance 4 adopt is the metalfilmresistor of 6M Ω.Insulating support rod 2 is organic glass insulating support rod or teflon insulation support bar.
During concrete enforcement, earlier will subordinate high-tension resistive 7, intergrade high-tension resistive 9 and higher level's high-tension resistive 10 polyphones, will be in parallel with the top of higher level's high-tension resistive 10 by the high voltage input terminal of the DC voltage transformer of calibrating/calibration, apply identical high direct voltage simultaneously, the low-voltage output output low-voltage signal of DC voltage transformer, at this moment, the drawing signal terminal and also can export low-voltage signal of subordinate high-tension electricity group 7, by measuring this two low-voltage signals, calculate the on-the-spot error of extra-high voltage of DC voltage transformer and solid foamed insulation with the direct current standard voltage divider.
Claims (3)
1. the on-the-spot direct current standard voltage divider of using of the extra-high voltage of solid foamed insulation, it is characterized in that: form by tandem working, multistage high-tension resistive that structure is identical, every grade of high-tension resistive structure is: internal layer measuring resistance (3) and outer shielding resistance (4) are formed by the same resistance element connected in series and are fixed on the insulation inner core (1) through the insulation support bar, and internal layer measuring resistance (3) and outer shielding resistance (4) all in the shape of a spiral shape around insulation inner core layout; The internal layer measuring resistance of subordinate high-tension resistive is provided with signal leading-out terminal (8); Urceolus (6) and insulation inner core are filled with solid between urceolus and the insulation inner core and send out insulating medium (5) along same axis setting.
2. the extra-high voltage of a kind of solid foamed insulation according to claim 1 is on-the-spot uses the direct current standard voltage divider, it is characterized in that: the resistive element that described internal layer measuring resistance (3) and outside shielding resistance (4) adopt is the metalfilmresistor of 6M Ω.
3. the extra-high voltage of a kind of solid foamed insulation according to claim 1 is on-the-spot uses the direct current standard voltage divider, and it is characterized in that: described insulating support rod (2) is organic glass insulating support rod or teflon insulation support bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110021838 CN102109590B (en) | 2011-01-19 | 2011-01-19 | Solid foaming insulation direct-current standard voltage divider for extra-high voltage field |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110021838 CN102109590B (en) | 2011-01-19 | 2011-01-19 | Solid foaming insulation direct-current standard voltage divider for extra-high voltage field |
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| CN102109590A true CN102109590A (en) | 2011-06-29 |
| CN102109590B CN102109590B (en) | 2013-05-22 |
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| CN 201110021838 Active CN102109590B (en) | 2011-01-19 | 2011-01-19 | Solid foaming insulation direct-current standard voltage divider for extra-high voltage field |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565488A (en) * | 2012-02-09 | 2012-07-11 | 国网电力科学研究院 | High-voltage AC (alternate current) and DC (direct current) voltage divider with heat dissipation structure |
| CN103424729A (en) * | 2013-07-24 | 2013-12-04 | 中国电力科学研究院 | On-site calibration device for direct-current voltage transformer |
| CN108427090A (en) * | 2018-04-26 | 2018-08-21 | 武汉磐电科技股份有限公司 | ± 1100kV extra-high voltages double shield automatic constant-temperature direct current standard voltage divider and its application method |
| CN110780254A (en) * | 2019-11-11 | 2020-02-11 | 国网江苏省电力有限公司电力科学研究院 | Double-circuit direct current high voltage pressure measurement system with shielding |
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| US2209819A (en) * | 1939-07-29 | 1940-07-30 | Gen Electric | Electric discharge apparatus |
| CN1076317A (en) * | 1992-03-10 | 1993-09-15 | 周符明 | Divider |
| CN101726646A (en) * | 2008-10-14 | 2010-06-09 | 西安华伟光电技术有限公司 | Equipotential cavity precise high-voltage sensor |
| CN201955463U (en) * | 2011-01-19 | 2011-08-31 | 四川电力科学研究院 | Extra-high-voltage field DC standard voltage divider adopting solid foamed insulation |
-
2011
- 2011-01-19 CN CN 201110021838 patent/CN102109590B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US2209819A (en) * | 1939-07-29 | 1940-07-30 | Gen Electric | Electric discharge apparatus |
| CN1076317A (en) * | 1992-03-10 | 1993-09-15 | 周符明 | Divider |
| CN101726646A (en) * | 2008-10-14 | 2010-06-09 | 西安华伟光电技术有限公司 | Equipotential cavity precise high-voltage sensor |
| CN201955463U (en) * | 2011-01-19 | 2011-08-31 | 四川电力科学研究院 | Extra-high-voltage field DC standard voltage divider adopting solid foamed insulation |
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| 刘志宏 等: "直流高电压标准分压器周期校准方法的研究", 《宇航计测技术》, 30 June 2006 (2006-06-30), pages 30 - 33 * |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102565488A (en) * | 2012-02-09 | 2012-07-11 | 国网电力科学研究院 | High-voltage AC (alternate current) and DC (direct current) voltage divider with heat dissipation structure |
| CN103424729A (en) * | 2013-07-24 | 2013-12-04 | 中国电力科学研究院 | On-site calibration device for direct-current voltage transformer |
| CN103424729B (en) * | 2013-07-24 | 2016-07-06 | 国家电网公司 | A kind of on-site calibration device for direct-current voltage transformer |
| CN108427090A (en) * | 2018-04-26 | 2018-08-21 | 武汉磐电科技股份有限公司 | ± 1100kV extra-high voltages double shield automatic constant-temperature direct current standard voltage divider and its application method |
| CN110780254A (en) * | 2019-11-11 | 2020-02-11 | 国网江苏省电力有限公司电力科学研究院 | Double-circuit direct current high voltage pressure measurement system with shielding |
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| CN102109590B (en) | 2013-05-22 |
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Effective date of registration: 20130105 Address after: Tsing Hua Road Qingyang District of Chengdu City, Sichuan Province, No. 24 610071 Applicant after: Sichuan Electric power Research Institute Applicant after: State Grid Corporation of China Address before: 610071 Sichuan province Chengdu Qinghua Road No. twenty-four Applicant before: Sichuan Electric power Research Institute |
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