CN202384165U - Pillar electronic type current and voltage combined mutual inductor with vertical type coaxial capacitance structure - Google Patents
Pillar electronic type current and voltage combined mutual inductor with vertical type coaxial capacitance structure Download PDFInfo
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- CN202384165U CN202384165U CN 201120423289 CN201120423289U CN202384165U CN 202384165 U CN202384165 U CN 202384165U CN 201120423289 CN201120423289 CN 201120423289 CN 201120423289 U CN201120423289 U CN 201120423289U CN 202384165 U CN202384165 U CN 202384165U
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- 239000004020 conductor Substances 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 239000012212 insulator Substances 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
- H02B13/0356—Mounting of monitoring devices, e.g. current transformers
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- Transformers For Measuring Instruments (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to a pillar electronic type current and voltage combined mutual inductor with a vertical type coaxial capacitance structure, electronic type current and voltage combined mutual inductors are achieved on the basis of the structure of traditional pillar type SF6 gas insulation mutual inductors. A supporting tube is divided into an inner tube and an outer tube with a same axis, and an insulating medium layer is arranged between the inner tube and the outer tube; the combined mutual inductor comprises an electronic type current mutual inductor and a coaxial capacitance electronic type voltage mutual inductor, the coaxial capacitance electronic type voltage mutual inductor is a vertical type coaxial capacitance electronic type voltage mutual inductor comprising high-voltage capacitance and low-voltage capacitance which are equivalent and connected in series, the outer tube, the inner tube and insulating media served by the insulating media layer constitute the low-voltage capacitance, and the two ends of the low-voltage capacitance are connected to a voltage signal collecting unit in a base. The mutual inductor has the advantages of being concise in structure, and large in insulating strength; coaxial capacitances are almost arranged in an insulating sleeve and far from primary conductors, and possibility of puncture is greatly reduced.
Description
Technical field
The utility model relates to a kind of vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer.
Background technology
Along with electric power system to big capacity, superhigh pressure and ultra high voltage direction develop, to the power equipment miniaturization, intellectuality, the requirement of high reliability is also increasingly high.Conventional electromagnetic potential transformer or capacitance type potential transformer insulation system are complicated, volume increases, cost is high; Loaded down with trivial details, the usage space of connecting up is big, complicated operation when installing; Supersaturation takes place easily; There are shortcomings such as remanent magnetism, magnetic saturation, ferro resonance, dynamic range is little, have been difficult to satisfy the application development requirement of electric power system.So many now employing electronic currents, voltage transformer provide conventional instrument transformer.
Electronic current mutual inductor adopts Luo-coil, small-power coil or magneto-optic instrument transformer.With the signal that collects, through the anti-phase of collector internal circuit, integration, amplification, opto-electronic conversion becomes light signal to insert merge cells through optical fiber, finally sends to the protection equipment of measuring.Existing column support type SF6 gas-insulated instrument transformer has adopted electronic current transducer mostly.
Electronic type voltage transformer is a kind of voltage transformer that utilizes coaxial capacitance series connection voltage divider principle to form.Chinese patent file 200710169091.1 novel high voltage combined independent electronic type currents, voltage transformer; 201020606808.1 1 kinds of gas-insulated electronic type voltage transformers of Chinese patent file; These two pieces of patent documents have disclosed the basic structure and the principle of electronic type voltage transformer, repeat no more at this.It is to be noted; The structure of the electronic type voltage transformer disclosed in these two pieces of patent documents; Coaxial capacitance is arranged in the Primary Conductor chamber at Primary Conductor place; The high-low pressure coaxial capacitance that forms all is the axle center with the Primary Conductor, and this mode causes puncture easily when decreasing insulating.
The utility model content
The purpose of the utility model provides a kind of vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer, on the architecture basics of conventional column formula SF6 gas-insulated instrument transformer, realizes electronic current combination of voltages instrument transformer.
For realizing above-mentioned purpose; The scheme of the utility model is: a kind of vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer; The High Pressure Shell that comprises the top, the bottom, be used for fixing the insulating sleeve on base, the corresponding setting of the bottom opening of High Pressure Shell with the insulating sleeve open top; High Pressure Shell is fixedly connected through a disc insulator with insulating sleeve, is provided with stay pipe between the closing in end of said disc insulator and the base; Be filled with the SF6 insulating gas in said High Pressure Shell and the insulating sleeve, said High Pressure Shell, disc insulator, the coaxial setting of insulating sleeve, wealthy mouthful of said disc insulator towards said stay pipe; Said stay pipe is arranged with and the equipotential high-tension shielding tube of High Pressure Shell in the insulating sleeve top section is coaxial; Said stay pipe is divided into coaxial interior pipe and outer tube, is insulating medium layer between interior pipe and the outer tube; Combination transformer comprises electronic current mutual inductor and coaxial capacitance electronic type voltage transformer; The coil of electronic current mutual inductor be arranged on disc insulator close up end near Primary Conductor one side, its coil is connected to the current signal collecting unit in the base through the secondary singal line that is arranged in the said stay pipe; Said coaxial capacitance electronic type voltage transformer is a vertical coaxial capacitance electronic type voltage transformer, comprises the high-voltage capacitance and the low-voltage capacitance of equivalent series, and high-voltage capacitance is made up of first high-voltage capacitance and second high-voltage capacitance of equivalent parallel; It is that dielectric is formed said first high-voltage capacitance that said High Pressure Shell, outer tube reach with SF6 insulating gas between them and disc insulator; It is that dielectric is formed said second high-voltage capacitance that high-tension shielding tube, outer tube reach with the insulating gas between them; It is that dielectric is formed said low-voltage capacitance that outer tube, interior pipe reach with said insulating medium layer, and the low-voltage capacitance two ends are connected to the voltage signal acquisition unit in the base.
Pipe ground connection in said.Be parallel with the capacitance-resistance divider resistance between the input of said voltage signal acquisition unit.Said stay pipe is in be arranged with anti-interference shielding cylinder near base portion.Insulating medium layer between said outer tube and the interior pipe is SF6 gas-insulated medium layer or solid dielectric insulation layer.Said low-voltage capacitance two ends connect the voltage signal acquisition unit through high temperature resistant multiple twin shielding conductor.The coil of electronic current mutual inductor is arranged in all pressures shielding cylinder near Primary Conductor one side of disc insulator closing in end, all presses shielding cylinder to wear in being located on the Primary Conductor.The coil of said electronic current mutual inductor is a Luo-coil.
Because existing column support type SF6 gas-insulated instrument transformer uses extensively, designs replacement again and can cause very big waste.And the utility model structure is terse, dielectric strength is big, on existing column support type SF6 gas-insulated instrument transformer basis, only need stay pipe be divided into two-layerly, and adopts original insulating gas or increase one deck insulating material to form dielectric.And the coaxial capacitance of the utility model all is in the insulating sleeve, away from Primary Conductor basically; The possibility that takes place to puncture reduces greatly; And coaxial capacitance is the axle center with the insulating sleeve all, forms a kind of vertical coaxial capacitance structure, and reliability and stability strengthens.Detect when realizing electric current, voltage, compact conformation, precision is high, greatly reduces cost.
Description of drawings
Fig. 1 is the structural representation of the combination transformer of the utility model;
Fig. 2 is the coaxial capacitance structure chart of the utility model electronic type voltage transformer;
Fig. 3 is the electronic type voltage transformer equivalent circuit diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Like Fig. 1; The utility model is improved on conventional column formula SF6 gas-insulated instrument transformer basis, and column support type SF6 gas insulated high voltage current transformer mainly comprises: the High Pressure Shell 1 that top Primary Conductor 2 is passed, the insulating sleeve 6 of bottom; Insulating sleeve 6 is fixed on the base 20; High Pressure Shell 1 is fixedly connected with insulating sleeve 6 through supporting insulator (present embodiment meta disc insulator 4 also can adopt insulated tension pole etc.), and the bottom opening of High Pressure Shell 1 is corresponding with the open top of insulating sleeve 6; Disc insulator 4 is fixed through flange and High Pressure Shell 1, insulating sleeve 6; Wealthy mouthful of its end that closes up towards base (forming the peviform of a back-off), and fixing one an of side of the end that closes up is all pressed shielding cylinder 2, is connected a stay pipe between opposite side and the base 20.Also be fixed with a high-tension shielding tube 5 on the flange of disc insulator 4.Insulating sleeve 6, high-tension shielding tube 5, stay pipe, disc insulator 4 coaxial settings.
The main improvement of the utility model is, stay pipe is changed into by double-decker, i.e. outer tube 7 and interior pipe 8.The coaxial capacitance structure of the electronic type voltage transformer that forms is following, in conjunction with Fig. 2, Fig. 3: the high-voltage capacitance of equivalent series and low-voltage capacitance, high-voltage capacitance is made up of the first high-voltage capacitance C11 and the second high-voltage capacitance C12 of equivalent parallel; High Pressure Shell 1, outer tube 7 and be that dielectric is formed the said first high-voltage capacitance C11 with SF6 insulating gas between them and disc insulator 4; High-tension shielding tube 5, outer tube 7 and be that dielectric is formed the said second high-voltage capacitance C12 with the insulating gas between them; Outer tube 7, interior pipe 8 and be that dielectric is formed said low-voltage capacitance C2 with the insulating medium layer between them 22, low-voltage capacitance C2 two ends are connected to the voltage signal acquisition unit in the base 20 through outlet 11.Be parallel with capacitance-resistance divider resistance R between the input of voltage signal acquisition unit.Through gathering the voltage U i that low-voltage capacitance C2 two ends low pressure U0 and relevant capacitor value can be known Primary Conductor 2.Insulating medium layer 22 is the solid dielectric insulation layer (adopt the epoxy fibreglass medium or directly adopt double face copper) of SF6 gas-insulated medium layer or increase.
About electronic current mutual inductor, its coil 3 is installed in all presses in the shielding cylinder 2.Signal lead-out wire 13 (adopting high temperature resistant Shielded Twisted Pair) is connected to the current signal collecting unit in the base 20 through interior pipe 8; All press shielding cylinder 2 and the equal ground connection of interior pipe.
Current signal collecting unit and voltage signal acquisition unit all are arranged in the collecting unit 17; Collecting unit 17 is provided with input wires terminal 12; Connect current transformer lead-out wire 13 and voltage transformer outlet 11, the signal of collection changes digital signal into through optical fiber 18 outputs through collecting unit 17.Collecting unit 17 is installed in base 20 inside, can improve the operational environment of electronic loop, reduces electromagnetic interference; Power supply 14 overcomes the problem that active instrument transformer exists for the collecting unit power supply on the spot, and power supply is stable.Coil 3 is the Luo Shi air core coil.For avoiding interference the generation of electric capacity, increase anti-interference shielding cylinder 19 at stay pipe near base section, guarantee voltage signal progress of disease precision.Low-voltage capacitance output two ends metal electrode and grading ring two ends and the United Nations General Assembly's resistance form high voltage and suppress circuit, suppress to transmit overvoltage.
Claims (8)
1. vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer; The High Pressure Shell that comprises the top; The bottom, be used for fixing the insulating sleeve on base; The corresponding setting of the bottom opening of High Pressure Shell with the insulating sleeve open top, High Pressure Shell is fixedly connected through a disc insulator with insulating sleeve, is provided with stay pipe between the closing in end of said disc insulator and the base; Be filled with the SF6 insulating gas in said High Pressure Shell and the insulating sleeve, said High Pressure Shell, disc insulator, the coaxial setting of insulating sleeve is characterized in that, wealthy mouthful of said disc insulator towards said stay pipe; Said stay pipe is arranged with and the equipotential high-tension shielding tube of High Pressure Shell in the insulating sleeve top section is coaxial; Said stay pipe is divided into coaxial interior pipe and outer tube, is insulating medium layer between interior pipe and the outer tube;
Combination transformer comprises electronic current mutual inductor and coaxial capacitance electronic type voltage transformer; The coil of electronic current mutual inductor be arranged on disc insulator close up end near Primary Conductor one side, its coil is connected to the current signal collecting unit in the base through the secondary singal line that is arranged in the said stay pipe;
Said coaxial capacitance electronic type voltage transformer is a vertical coaxial capacitance electronic type voltage transformer, comprises the high-voltage capacitance and the low-voltage capacitance of equivalent series, and high-voltage capacitance is made up of first high-voltage capacitance and second high-voltage capacitance of equivalent parallel; It is that dielectric is formed said first high-voltage capacitance that said High Pressure Shell, outer tube reach with SF6 insulating gas between them and disc insulator; It is that dielectric is formed said second high-voltage capacitance that high-tension shielding tube, outer tube reach with the insulating gas between them; It is that dielectric is formed said low-voltage capacitance that outer tube, interior pipe reach with said insulating medium layer, and the low-voltage capacitance two ends are connected to the voltage signal acquisition unit in the base.
2. vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer according to claim 1 is characterized in that, said interior pipe ground connection.
3. vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer according to claim 1 is characterized in that, is parallel with the capacitance-resistance divider resistance between the input of said voltage signal acquisition unit.
4. vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer according to claim 1 is characterized in that said stay pipe is in be arranged with anti-interference shielding cylinder near base portion.
5. vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer according to claim 1 is characterized in that the insulating medium layer between said outer tube and the interior pipe is SF6 gas-insulated medium layer or solid dielectric insulation layer.
6. vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer according to claim 1 is characterized in that, said low-voltage capacitance two ends connect the voltage signal acquisition unit through high temperature resistant multiple twin shielding conductor.
7. vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer according to claim 1; It is characterized in that; The coil of electronic current mutual inductor is arranged in all pressures shielding cylinder near Primary Conductor one side of disc insulator closing in end, all presses shielding cylinder to wear in being located on the Primary Conductor.
8. vertical coaxial capacitance structure pillar electronic current combination of voltages instrument transformer according to claim 7 is characterized in that the coil of said electronic current mutual inductor is a Luo-coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120423289 CN202384165U (en) | 2011-10-31 | 2011-10-31 | Pillar electronic type current and voltage combined mutual inductor with vertical type coaxial capacitance structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120423289 CN202384165U (en) | 2011-10-31 | 2011-10-31 | Pillar electronic type current and voltage combined mutual inductor with vertical type coaxial capacitance structure |
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| CN202384165U true CN202384165U (en) | 2012-08-15 |
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| CN 201120423289 Expired - Fee Related CN202384165U (en) | 2011-10-31 | 2011-10-31 | Pillar electronic type current and voltage combined mutual inductor with vertical type coaxial capacitance structure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208359A (en) * | 2013-03-21 | 2013-07-17 | 许继集团有限公司 | Electronic current and voltage combined transformer for support column type gas insulation |
| CN104502882A (en) * | 2014-12-08 | 2015-04-08 | 国网四川省电力公司电力科学研究院 | Standard device for tracing 10kV-35kV high voltage electric energy value |
| CN105321659A (en) * | 2015-12-09 | 2016-02-10 | 天津市百利纽泰克电气科技有限公司 | High-voltage side shielding shell of high-voltage electronic type current transformer |
| CN106098348A (en) * | 2016-06-03 | 2016-11-09 | 中国南方电网有限责任公司电网技术研究中心 | Electronic current-voltage transformer |
| CN106783113A (en) * | 2015-11-19 | 2017-05-31 | 江苏华江科技有限公司 | A kind of gas storage cabinet device of new SF6 gas insulated high voltage current transformers |
| CN107843757A (en) * | 2017-11-22 | 2018-03-27 | 大连华亿电力电器有限公司 | All insulation voltage electronic formula sensor |
| 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 |
| CN110088859A (en) * | 2016-12-21 | 2019-08-02 | Abb瑞士股份有限公司 | Combination instrument mutual inductor for high-voltage applications |
| CN111276315A (en) * | 2020-02-10 | 2020-06-12 | 华北电力大学 | Current-voltage transformer |
| CN111989754A (en) * | 2018-04-16 | 2020-11-24 | 西门子股份公司 | Measuring method and high-voltage measuring transformer with clean air |
| CN112415248A (en) * | 2019-08-20 | 2021-02-26 | 西安西电高压开关有限责任公司 | Current-voltage transformer |
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2011
- 2011-10-31 CN CN 201120423289 patent/CN202384165U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103208359B (en) * | 2013-03-21 | 2016-04-20 | 许继集团有限公司 | A kind of column support type gas-insulated electronic current-voltage combination transformer |
| CN103208359A (en) * | 2013-03-21 | 2013-07-17 | 许继集团有限公司 | Electronic current and voltage combined transformer for support column type gas insulation |
| CN104502882A (en) * | 2014-12-08 | 2015-04-08 | 国网四川省电力公司电力科学研究院 | Standard device for tracing 10kV-35kV high voltage electric energy value |
| CN106783113A (en) * | 2015-11-19 | 2017-05-31 | 江苏华江科技有限公司 | A kind of gas storage cabinet device of new SF6 gas insulated high voltage current transformers |
| CN105321659A (en) * | 2015-12-09 | 2016-02-10 | 天津市百利纽泰克电气科技有限公司 | High-voltage side shielding shell of high-voltage electronic type current transformer |
| CN106098348A (en) * | 2016-06-03 | 2016-11-09 | 中国南方电网有限责任公司电网技术研究中心 | Electronic current-voltage transformer |
| CN106098348B (en) * | 2016-06-03 | 2018-09-04 | 中国南方电网有限责任公司电网技术研究中心 | Electronic current-voltage transformer |
| CN110088859B (en) * | 2016-12-21 | 2021-11-16 | 日立能源瑞士股份公司 | Combined instrument transformer for high voltage applications |
| CN110088859A (en) * | 2016-12-21 | 2019-08-02 | Abb瑞士股份有限公司 | Combination instrument mutual inductor for high-voltage applications |
| US11328863B2 (en) | 2016-12-21 | 2022-05-10 | Hitachi Energy Switzerland Ag | Combined instrument transformer for HV applications |
| CN107843757A (en) * | 2017-11-22 | 2018-03-27 | 大连华亿电力电器有限公司 | All insulation voltage electronic formula sensor |
| CN111989754A (en) * | 2018-04-16 | 2020-11-24 | 西门子股份公司 | Measuring method and high-voltage measuring transformer with clean air |
| 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 |
| CN112415248A (en) * | 2019-08-20 | 2021-02-26 | 西安西电高压开关有限责任公司 | Current-voltage transformer |
| CN112415248B (en) * | 2019-08-20 | 2024-04-05 | 西安西电高压开关有限责任公司 | Current-voltage transformer |
| CN111276315A (en) * | 2020-02-10 | 2020-06-12 | 华北电力大学 | Current-voltage transformer |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131129 Address after: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee after: Xuji Electric Co., Ltd. Patentee after: Xuchang Xuji Software Technology Co., Ltd. Address before: No. 1298 Xuchang City, Henan province 461000 XJ Avenue Patentee before: Xuji Group Co., Ltd. Patentee before: Xuji Electric Co., Ltd. Patentee before: Xuchang Xuji Software Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20191031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |