CN103323640A - Extra-high-voltage direct-voltage voltage divider with heat dissipation device - Google Patents
Extra-high-voltage direct-voltage voltage divider with heat dissipation device Download PDFInfo
- Publication number
- CN103323640A CN103323640A CN2013102581635A CN201310258163A CN103323640A CN 103323640 A CN103323640 A CN 103323640A CN 2013102581635 A CN2013102581635 A CN 2013102581635A CN 201310258163 A CN201310258163 A CN 201310258163A CN 103323640 A CN103323640 A CN 103323640A
- Authority
- CN
- China
- Prior art keywords
- voltage
- unit
- extra
- divider
- high voltage
- 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.)
- Pending
Links
Images
Landscapes
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention relates to the extra-high-voltage direct-voltage transmission testing technology of an electric system and discloses an extra-high-voltage direct-voltage voltage divider with a heat dissipation device. The extra-high-voltage direct-voltage voltage divider with the heat dissipation device comprises a high-voltage unit, a low-voltage unit, a base and an insulating bush, wherein the high-voltage unit and the low-voltage unit are arranged in the insulating bush and connected in series, the insulating bush is fixed on the base, the heat dissipation device is arranged at the upper end of an upper end flange of a voltage divider body, the high-voltage unit of the voltage divider and the low-voltage unit of the voltage divider are connected in series, the high-voltage unit and the low-voltage unit are arranged inside the insulating bush, the insulating bush is sealed through the upper end flange and a lower end flange, SF6 gas is filled into the insulating bush, the heat dissipation device is arranged at the upper end of the upper end flange of the extra-high-voltage direct-voltage voltage divider, the high-voltage unit comprises a plurality of single-stage voltage dividing modules, each single-stage voltage dividing module comprises two high-voltage voltage dividing resistance units which are connected with each other in parallel and a high-voltage voltage sharing capacitance unit, and the high-voltage voltage dividing resistance units of the plurality of single-stage voltage dividing modules are connected with one another in series.
Description
Technical field
The present invention relates to the extra-high voltage direct-current transmission technical field of measurement and test, particularly extra-high voltage direct-current project of transmitting and converting electricity dc voltage measurement.
Background technology
The extra-high voltage direct-current voltage divider is one of key equipment in the DC transmission system, is the sensing element of straight-flow system measuring and protection, can vivid be referred to as " eyes " of system.The deepization research of ± 800kV extra-high voltage direct-current voltage divider product, can further break the technical monopoly of external producer, greatly develop in country under the trend of direct current transportation, right ± 1100kV extra-high voltage direct-current voltage divider development has crucial theoretical direction effect, can improve China's DC equipment kind, and good market outlook are arranged.
It is 0.2 grade that China's high pressure, extra-high voltage direct-current power transmission and transformation system require the voltage measurement class of accuracy, and general divider design mainly concentrates on the aspect researchs such as insulating property of choosing of resistance, capacitance material and stability, electric-field intensity distribution and material.Special China extra-high voltage direct-current system is in order to guarantee the accurate of voltage measurement, requiring to increase the electric current of measuring voltage divider is 1mA or 2mA, so greatly increased the thermal power of measuring voltage divider, operation reliably and with long-term and stable operation have become the outstanding problem that the extra-high voltage direct-current voltage measuring apparatus must be faced.Therefore comprehensive many-sided influence factor, the design of employing Rational structure, increase heat dissipation design, so that some Primary Component hot(test)-spot temperature of voltage divider can not surpass the running temperature of regulation for a long time, can guarantee that the voltage divider long-time running is reliable, otherwise the performance that can cause part Primary Component, insulating material reduces, thereby causes the inside and outside dielectric level of voltage divider to descend and even puncture and have an accident.
Summary of the invention
The object of the present invention is to provide a kind of extra-high voltage direct-current voltage divider with radiating element.
In order to achieve the above object, the technical solution used in the present invention is as follows:
A kind of extra-high voltage direct-current voltage divider with radiating element comprises placing in the insulating sleeve and the high voltage unit and the low voltage unit that are connected in series, and described insulating sleeve is by the upper and lower end flange seal and fill SF
6Gas; Described upper flanges upper end is equipped with radiating element; Wherein, described high voltage unit comprises a plurality of single-stage division module, and each single-stage division module comprises two high pressure divider resistance unit and the high pressure equalizing capacitance unit of a parallel connection, is connected in series between the high pressure divider resistance unit of a plurality of single-stage division module.
The present invention further improves and is: described insulating sleeve is extra-high voltage organic silicon rubber hollow bushing, and sleeve pipe is outside equipped with the insulation full skirt.
The present invention further improves and is: in the described insulating sleeve, the pressure that fills SF6 gas is 0.2～0.5MPa.
The present invention further improves and is: all press high-voltage capacitance unit and two dividing potential drop high-tension resistive unit by pair of metal yoke plate clamping (11), realize fixing and in parallel electrical connection for one in the described high voltage unit.
The present invention further improves and is: fixing by positioning tie bar (12) between the described metal yoke plate (11), described positioning tie bar is insulating bar, plays a supportive role.
The present invention further improves and is: in the described single-stage division module, all press the high-voltage capacitance unit placed in the middle for one, two dividing potential drop high-tension resistive unit parallel equidistant distribute, the Multilevel partial-pressure module in insulating sleeve vertically stacked, series connection is fixing.
The present invention further improves and is: described radiating element is the aluminium alloy of high 150mm, thick 20-3mm, and 17 circle distribution place voltage divider upper end high pressure all to press the shading ring center.
The present invention further improves and is: in the single-stage division module, the high pressure divider resistance unit in the adjacent single-stage division module differs 90 degree and arranges.
The present invention further improves and is: height divider resistance unit, height equalizing capacitance unit adopt same material and structure.
The present invention further improves and is: in the single-stage division module, the high partial pressures resistance unit of series connection forms high voltage unit dividing potential drop all-in resistance R1 mutually, mutually the high equalizing capacitance unit of series connection forms high voltage unit and all presses total capacitance C1, and it satisfies with the divider resistance unit R 2 of low voltage unit and equalizing capacitance unit C2 and concerns: R1/R2=C2/C1.
With respect to prior art, voltage divider of the present invention has the following advantages at least: a kind of extra-high voltage direct-current voltage divider with radiating element, comprise and place in the insulating sleeve and the high voltage unit and the low voltage unit that are connected in series, described high voltage unit comprises a plurality of single-stage division module, each single-stage division module comprises two high pressure divider resistance unit and the high pressure equalizing capacitance unit of a parallel connection, is connected in series between the high pressure divider resistance unit of a plurality of single-stage division module.This structural advantages is: can make the as far as possible little impact that is subjected to external electric field of voltage divider internal electric field, even inner middle part electric field; Each single-stage division module comprises two high pressure divider resistance unit and the high pressure equalizing capacitance unit of a parallel connection, this structural advantages is to realize equivalent potential screen under the equal altitudes, can makes voltage divider easily be lower than rated power operation, increased voltage divider stability, reduce the level of DC corona, improved measuring accuracy.Fixing by positioning tie bar (12) between the above-mentioned metal yoke plate (11), described positioning tie bar is insulating bar, plays a supportive role, and the insulating bar material is high resistance glass fiber leading-drawing rod simultaneously, so that leakage current is little, has reduced measuring error.The low voltage unit of conventional voltage divider does not design in the voltage divider body, and during outdoor operation, low voltage unit is difficult to be consistent with the high voltage unit temperature, affects the voltage divider precision.What be connected in series in the voltage divider insulating sleeve of the present invention has high voltage unit and a low voltage unit, and design can guarantee that low voltage unit and high voltage unit temperature are consistent, and do not affect the voltage divider precision like this.Voltage divider body upper flange of the present invention upper end installation of heat radiator spare, radiating element is the aluminium alloy of the thick 3mm of high 150mm, 17 circle distribution, place voltage divider upper end high pressure all to press the shading ring center, effect is in the extra-high voltage direct-current measurement mechanism charging operation, can effectively reduce the inner larger thermal power that exists of voltage divider, thereby the voltage divider running temperature is reduced, improve extra-high voltage direct-current voltage measuring apparatus serviceable life.
Description of drawings
Fig. 1 is circuit theory schematic diagram of the present invention.
Fig. 2 is the assembling schematic diagram of insulating sleeve and high voltage unit among the present invention, low voltage unit.
Fig. 3 is high pressure divider resistance cellular construction schematic diagram.
Fig. 4 is high pressure equalizing capacitance cellular construction schematic diagram.
Fig. 5 is the base construction schematic diagram.
Fig. 6 is voltage divider body upper flange upper end installation of heat radiator spare schematic diagram.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1; among the figure; r11, r12, r13, r14 are the high pressure divider resistance unit in the high voltage unit; c11, c12, c13, c14 are the high pressure equalizing capacitance unit in the high voltage unit; R2 is the low pressure divider resistance unit in the low voltage unit; C2 is the low pressure dividing potential drop capacitor cell in the low voltage unit, and F is overvoltage protective unit.
A kind of extra-high voltage direct-current voltage divider with radiating element of the present invention comprises high voltage unit and low voltage unit, high voltage unit and low voltage unit series connection.
High voltage unit is comprised of the division module of level Four series connection, and be specially: high pressure divider resistance unit r11 is in parallel with high pressure equalizing capacitance unit c11, as the first single-stage division module; High pressure divider resistance unit r12 is in parallel with high pressure equalizing capacitance unit c12, as the second single-stage division module; High pressure divider resistance r13 is in parallel with high pressure equalizing capacitance c13, as the 3rd single-stage division module; High pressure divider resistance r14 is in parallel with high pressure equalizing capacitance c14, as the 4th single-stage division module; Low voltage unit is comprised of a division module, is specially: low pressure divider resistance unit R 2 is in parallel with low pressure equalizing capacitance unit C2.The present embodiment only is schematically, and high voltage unit and low voltage unit all can be comprised of the division module of a plurality of single-stage series connection, only needs to satisfy a minute pressure request and gets final product.
High pressure divider resistance unit r11, r12, r13, r14 are composed in series the high pressure all-in resistance R1 of high voltage unit, are the main parts of voltage divider, when applying high direct voltage, have DC current to flow through this resistance; High pressure equalizing capacitance unit c11, c12, c13, c14 are composed in series the high pressure total capacitance C1 of high voltage unit, its Main Function is that voltage divider plays all pressure effects exactly when transient voltage is applied to voltage divider, Transient Electric Field is evenly distributed, improve the insulating property of voltage divider, R1, C1 adopt sectional type to distribute to make and all press better effects if.R2 is the low pressure divider resistance unit of low voltage unit, when DC current flows through low resistance, will produce measurable DC low-voltage at low resistance.C2 is the low pressure equalizing capacitance unit of low voltage unit, and Main Function plays all pressure effects under the effect of transient voltage.Height divider resistance unit, height equalizing capacitance unit adopt same material and structure, can reduce temperature to the impact of intrinsic standoff ratio, and selection principle is: R1/R2=C2/C1.
Low voltage unit also comprises overvoltage protective unit F.Overvoltage protective unit F can select gas-discharge tube, TVS pipe or voltage dependent resistor (VDR), the superpotential of the output of restriction low voltage unit and subsequent conditioning circuit.Low voltage unit voltage signal lead-out mode is not content described in the invention.
In conjunction with Fig. 2, further specify insulating sleeve and high voltage unit, low voltage unit structural relation.High voltage unit, low voltage unit series connection place in the insulating sleeve 1, and insulating sleeve 1 is by upper and lower end flange 2,3 sealing and filled SF
6Gas fills SF
6The pressure of gas is 0.2～0.5MPa.Upper flanges 2 is aluminium, and the top of high voltage unit is equipped with conducting rod 5, upper flanges 2 lower ends assembling Mume flower contact 4, and Mume flower contact 4 blocks an end of described conducting rod 5.Insulating sleeve 1 is organic silicon rubber ultra-high voltage hollow sleeve pipe, and its cylindrical shell is that epoxide resin material is made, and cylindrical shell is outside equipped with machine silicon rubber insulation full skirt.
In conjunction with Fig. 3, in the high voltage unit of the present embodiment, high pressure divider resistance unit comprises insulation supporting cylinder 101, be placed on resistive element in the insulation supporting cylinder 101, be fixed on the metal end 102 at insulation supporting cylinder 101 two ends.Metal end 102 is used for fixed resistance body, electrical connection and improves Electric Field Distribution, in addition, offers louvre 104 on the barrel of insulation supporting cylinder 101.
In conjunction with Fig. 4, in the high voltage unit of the present embodiment, high pressure equalizing capacitance unit comprises body 201, and body 201 two ends are respectively arranged with guarded electrode 202, and guarded electrode 202 is used for being electrically connected and can balance equalizing capacitance electric field on every side.
In conjunction with Fig. 2, in the single-stage division module, fixing and in parallel electrical connection is realized, in the single-stage division module simultaneously by 11 clampings of pair of metal yoke plate in high pressure equalizing capacitance unit and high pressure divider resistance unit, 1 high pressure equalizing capacitance unit places the voltage divider center, 2 high pressure divider resistance unit parallel equidistant distribute, the Multilevel partial-pressure module vertically stacked, be connected in series, in addition, in the adjacent single-stage division module, high pressure divider resistance unit differs 90 degree and arranges.Fixing by four positioning tie bars 12 between the metal yoke plate 11, positioning tie bar 12 is insulating bar, plays a supportive role.
In conjunction with Fig. 2, Fig. 5, pedestal 5 is connected by joining the hole bolt with insulating sleeve 1.
With reference to Fig. 2, Fig. 6, voltage divider upper flanges 2 upper end installation of heat radiator spares 7, radiating element 7 is high 150mm, the aluminium alloy of thick 3mm, 17 circle distribution place voltage divider upper end high pressure all to press shading ring 8 centers.
A kind of extra-high voltage direct-current voltage divider with radiating element of the present invention is arranged on high voltage unit, low voltage unit in the machine silicon rubber ultra-high voltage hollow sleeve pipe sealed at both ends and filled SF
6Gas, therefore, volume is little, lightweight, be difficult for initiation fire.
In addition, low voltage unit and high voltage unit are comprised of the division module of series connection respectively; Division module is comprised of the equalizing capacitance that is connected in parallel and divider resistance, can effectively solve under the DC voltage and the failure condition lightning impulse voltage under the homogeneity of Potential distribution, improve withstand voltage level and the functional reliability of high voltage unit.
Voltage divider body upper flange of the present invention upper end installation of heat radiator spare, radiating element is the aluminium alloy of the thick 3mm of high 150mm, 17 circle distribution place voltage divider upper end high pressure all to press the shading ring center.Effect is in the direct-current ultra high voltage measurement mechanism charging operation, can effectively reduce the inner larger thermal power that exists of voltage divider, thereby the voltage divider running temperature is reduced, and improves extra-high voltage direct-current voltage measuring apparatus serviceable life.
Claims (10)
1. the extra-high voltage direct-current voltage divider with radiating element is characterized in that, comprising: place in the insulating sleeve and the high voltage unit and the low voltage unit that are connected in series, described insulating sleeve is by the upper and lower end flange seal and fill SF
6Gas; Described upper flanges upper end is equipped with radiating element; Wherein, described high voltage unit comprises a plurality of single-stage division module, and each single-stage division module comprises two high pressure divider resistance unit and the high pressure equalizing capacitance unit of a parallel connection, is connected in series between the high pressure divider resistance unit of a plurality of single-stage division module.
2. a kind of extra-high voltage direct-current voltage divider with radiating element according to claim 1 is characterized in that, described insulating sleeve is extra-high voltage organic silicon rubber hollow bushing, and sleeve pipe is outside equipped with the insulation full skirt.
3. a kind of extra-high voltage direct-current voltage divider with radiating element according to claim 1 and 2 is characterized in that: in the described insulating sleeve, fill SF
6The pressure of gas is 0.2～0.5MPa.
4. a kind of extra-high voltage direct-current voltage divider with radiating element according to claim 1 and 2, it is characterized in that: all press high-voltage capacitance unit and two dividing potential drop high-tension resistive unit by pair of metal yoke plate (11) clamping, realize fixing and in parallel electrical connection for one in the described high voltage unit.
5. a kind of extra-high voltage direct-current voltage divider with radiating element according to claim 4 is characterized in that: fixing by positioning tie bar (12) between the described metal yoke plate (11), described positioning tie bar is insulating bar, plays a supportive role.
6. a kind of extra-high voltage direct-current voltage divider with radiating element according to claim 4, it is characterized in that, in the described single-stage division module, all press the high-voltage capacitance unit placed in the middle for one, two dividing potential drop high-tension resistive unit parallel equidistant distribute, a plurality of single-stage division module in insulating sleeve vertically stacked, series connection is fixing.
7. a kind of extra-high voltage direct-current voltage divider with radiating element according to claim 1 is characterized in that, described radiating element is the aluminium alloy of high 150mm, thick 20-3mm, and 17 circle distribution place voltage divider upper end high pressure all to press the shading ring center.
8. according to claim 1 or 4 described a kind of extra-high voltage direct-current voltage dividers with radiating element, it is characterized in that, in the single-stage division module, the high pressure divider resistance unit in the adjacent single-stage division module differs 90 degree and arranges.
9. a kind of extra-high voltage direct-current voltage divider with radiating element according to claim 1 is characterized in that, height divider resistance unit, height equalizing capacitance unit adopt same material and structure.
10. a kind of extra-high voltage direct-current voltage divider with radiating element according to claim 1, it is characterized in that, the high pressure divider resistance unit of series connection forms high voltage unit dividing potential drop all-in resistance R1 mutually, mutually the high pressure equalizing capacitance unit of series connection forms high voltage unit and all presses total capacitance C1, and it satisfies with the divider resistance unit R 2 of low voltage unit and equalizing capacitance unit C2 and concerns: R1/R2=C2/C1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102581635A CN103323640A (en) | 2013-06-25 | 2013-06-25 | Extra-high-voltage direct-voltage voltage divider with heat dissipation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102581635A CN103323640A (en) | 2013-06-25 | 2013-06-25 | Extra-high-voltage direct-voltage voltage divider with heat dissipation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103323640A true CN103323640A (en) | 2013-09-25 |
Family
ID=49192509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102581635A Pending CN103323640A (en) | 2013-06-25 | 2013-06-25 | Extra-high-voltage direct-voltage voltage divider with heat dissipation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103323640A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645365A (en) * | 2013-11-30 | 2014-03-19 | 许继集团有限公司 | A voltage divider unit used for a voltage transformer, and a capacitor element and a resistor element thereof |
| CN104360141A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Stand-off ratio voltage coefficient detection method based on separable direct current voltage divider |
| CN105891575A (en) * | 2016-06-14 | 2016-08-24 | 广东电网有限责任公司电力科学研究院 | Voltage divider |
| CN106468728A (en) * | 2015-08-20 | 2017-03-01 | 中国电力科学研究院 | A kind of divider with temperature monitoring |
| CN106468729A (en) * | 2015-08-20 | 2017-03-01 | 中国电力科学研究院 | A kind of divider with radiator structure |
| CN106487217A (en) * | 2015-08-27 | 2017-03-08 | 中国电力科学研究院 | A kind of divider |
| CN106537157A (en) * | 2014-07-18 | 2017-03-22 | 西门子公司 | Redundant solution of outputs on a rc voltage divider |
| CN106556745A (en) * | 2015-09-25 | 2017-04-05 | 中国电力科学研究院 | A kind of divider and its capacitance and dielectric loss detection method |
| CN108052737A (en) * | 2017-12-12 | 2018-05-18 | 中国西电电气股份有限公司 | A kind of motion simulation method for constraint valve block in gas circuit breaker |
| CN108627683A (en) * | 2017-03-23 | 2018-10-09 | 国家电网公司 | One kind ± 1100kV dividers |
| CN109725193A (en) * | 2019-02-25 | 2019-05-07 | 云南电网有限责任公司红河供电局 | It is a kind of for running the suspension type neutral point undervoltage detection means for doing anti-defect diagonsis |
| CN110320395A (en) * | 2019-06-28 | 2019-10-11 | 国网四川省电力公司电力科学研究院 | On-line monitoring high-precision capacitance-resistance parallel voltage divider |
| CN113063979A (en) * | 2021-03-17 | 2021-07-02 | 中国科学院近代物理研究所 | Electronic cooling direct current modulation pulse high-voltage divider and method |
| CN113884739A (en) * | 2021-08-20 | 2022-01-04 | 中国电力科学研究院有限公司 | Broadband voltage divider device and scale factor calibration method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000174205A (en) * | 1998-12-02 | 2000-06-23 | Mitsubishi Electric Corp | Thyristor stack |
| JP2000208233A (en) * | 1999-01-14 | 2000-07-28 | Toko Electric Corp | Lightning arrester |
| US20050036344A1 (en) * | 2003-08-14 | 2005-02-17 | Baptiste Georges William | High-voltage device having a measuring resistor |
| CN1908681A (en) * | 2006-08-15 | 2007-02-07 | 重庆大学 | Over-voltage monitoring sensor for AD electricity system |
| CN101074972A (en) * | 2006-05-15 | 2007-11-21 | 北京瑞恒超高压电器研究所 | Capacitance mask resistance sensor |
| CN201335857Y (en) * | 2008-12-26 | 2009-10-28 | 中国西电电气股份有限公司 | Voltage sensor for high-voltage DC transmission |
| CN101713793A (en) * | 2009-12-04 | 2010-05-26 | 中国西电电气股份有限公司 | Gas insulation-based DC high voltage measuring device |
| CN101877275A (en) * | 2010-07-16 | 2010-11-03 | 国网电力科学研究院 | Method for improving pollution flicker-resisting capability of DC voltage transformer |
-
2013
- 2013-06-25 CN CN2013102581635A patent/CN103323640A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000174205A (en) * | 1998-12-02 | 2000-06-23 | Mitsubishi Electric Corp | Thyristor stack |
| JP2000208233A (en) * | 1999-01-14 | 2000-07-28 | Toko Electric Corp | Lightning arrester |
| US20050036344A1 (en) * | 2003-08-14 | 2005-02-17 | Baptiste Georges William | High-voltage device having a measuring resistor |
| CN101074972A (en) * | 2006-05-15 | 2007-11-21 | 北京瑞恒超高压电器研究所 | Capacitance mask resistance sensor |
| CN1908681A (en) * | 2006-08-15 | 2007-02-07 | 重庆大学 | Over-voltage monitoring sensor for AD electricity system |
| CN201335857Y (en) * | 2008-12-26 | 2009-10-28 | 中国西电电气股份有限公司 | Voltage sensor for high-voltage DC transmission |
| CN101713793A (en) * | 2009-12-04 | 2010-05-26 | 中国西电电气股份有限公司 | Gas insulation-based DC high voltage measuring device |
| CN101877275A (en) * | 2010-07-16 | 2010-11-03 | 国网电力科学研究院 | Method for improving pollution flicker-resisting capability of DC voltage transformer |
Non-Patent Citations (1)
| Title |
|---|
| 李登云等: "1000kV直流电阻标准分压器的电场仿真计算和分析", 《高电压技术》 * |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103645365A (en) * | 2013-11-30 | 2014-03-19 | 许继集团有限公司 | A voltage divider unit used for a voltage transformer, and a capacitor element and a resistor element thereof |
| CN106537157B (en) * | 2014-07-18 | 2019-03-26 | 西门子公司 | The redundancy solution of output on RC divider |
| US10630074B2 (en) | 2014-07-18 | 2020-04-21 | Siemens Aktiengesellschaft | Redundant solution of outputs on a RC voltage divider |
| CN106537157A (en) * | 2014-07-18 | 2017-03-22 | 西门子公司 | Redundant solution of outputs on a rc voltage divider |
| CN104360141A (en) * | 2014-11-14 | 2015-02-18 | 国家电网公司 | Stand-off ratio voltage coefficient detection method based on separable direct current voltage divider |
| CN104360141B (en) * | 2014-11-14 | 2017-02-22 | 国家电网公司 | Stand-off ratio voltage coefficient detection method based on separable direct current voltage divider |
| CN106468728A (en) * | 2015-08-20 | 2017-03-01 | 中国电力科学研究院 | A kind of divider with temperature monitoring |
| CN106468729A (en) * | 2015-08-20 | 2017-03-01 | 中国电力科学研究院 | A kind of divider with radiator structure |
| CN106487217A (en) * | 2015-08-27 | 2017-03-08 | 中国电力科学研究院 | A kind of divider |
| CN106487217B (en) * | 2015-08-27 | 2019-11-01 | 中国电力科学研究院 | A kind of divider |
| CN106556745B (en) * | 2015-09-25 | 2020-01-17 | 中国电力科学研究院 | Direct current voltage divider and capacitance and dielectric loss detection method thereof |
| CN106556745A (en) * | 2015-09-25 | 2017-04-05 | 中国电力科学研究院 | A kind of divider and its capacitance and dielectric loss detection method |
| CN105891575A (en) * | 2016-06-14 | 2016-08-24 | 广东电网有限责任公司电力科学研究院 | Voltage divider |
| CN108627683A (en) * | 2017-03-23 | 2018-10-09 | 国家电网公司 | One kind ± 1100kV dividers |
| CN108052737A (en) * | 2017-12-12 | 2018-05-18 | 中国西电电气股份有限公司 | A kind of motion simulation method for constraint valve block in gas circuit breaker |
| CN109725193A (en) * | 2019-02-25 | 2019-05-07 | 云南电网有限责任公司红河供电局 | It is a kind of for running the suspension type neutral point undervoltage detection means for doing anti-defect diagonsis |
| CN110320395A (en) * | 2019-06-28 | 2019-10-11 | 国网四川省电力公司电力科学研究院 | On-line monitoring high-precision capacitance-resistance parallel voltage divider |
| CN113063979A (en) * | 2021-03-17 | 2021-07-02 | 中国科学院近代物理研究所 | Electronic cooling direct current modulation pulse high-voltage divider and method |
| CN113884739A (en) * | 2021-08-20 | 2022-01-04 | 中国电力科学研究院有限公司 | Broadband voltage divider device and scale factor calibration method |
| CN113884739B (en) * | 2021-08-20 | 2024-02-13 | 中国电力科学研究院有限公司 | Broadband voltage divider device and scale factor calibration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103323640A (en) | Extra-high-voltage direct-voltage voltage divider with heat dissipation device | |
| CN101713793B (en) | Gas insulation-based DC high voltage measuring device | |
| CN1912638B (en) | Can type capacitor voltage mutual inductor | |
| CN103456473B (en) | A kind of integral type oil-paper bushing | |
| CN101458273B (en) | Sensor for measuring very fast transient overvoltage in GIS | |
| CN102255258B (en) | 126-kV cabinet type gas-insulated metal-closed switching equipment | |
| CN104655896B (en) | A kind of detachable alternating current-direct current divider | |
| CN104655897B (en) | A kind of heat loss through convection divider | |
| CN200968968Y (en) | Can-type capacitance type potential transformer | |
| CN2914278Y (en) | Single-phase auto-powerstat | |
| CN203798883U (en) | Micro-current high-precision resistor type voltage dividing device | |
| CN103280792B (en) | A kind of series compensation device porcelain overcoat voltage limiter | |
| CN204834220U (en) | Miniaturized pot -type metal oxide arrester of 110kV three -phase | |
| CN105097285A (en) | Novel explosion-prevention thin film capacitor | |
| CN102109590B (en) | Solid foaming insulation direct-current standard voltage divider for extra-high voltage field | |
| CN209249262U (en) | A kind of transformer bushing | |
| CN205484519U (en) | Three -phase zero sequence combination formula voltage sensing device | |
| CN202586280U (en) | An intelligent high-voltage parallel capacitor and a high-voltage automatic reactive compensator | |
| CN103645365B (en) | A kind of divider unit and its capacity cell for voltage transformer, resistive element | |
| CN202258985U (en) | Insulating cylinder | |
| CN209624704U (en) | A kind of condenser type sleeve of test transformer structure | |
| CN201368894Y (en) | Sensor for measuring GIS internal very fast transient over-voltage | |
| CN101726646A (en) | Equipotential cavity precise high-voltage sensor | |
| CN201374227Y (en) | Ultra-high-voltage porcelain-bushing gapless zinc oxide arrester | |
| Middleton et al. | A dry type HV insulation system for extreme environments |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130925 |