CN202307503U - Electronic current and voltage combined transformer with high-voltage support pillar type suspension structure - Google Patents
Electronic current and voltage combined transformer with high-voltage support pillar type suspension structure Download PDFInfo
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- CN202307503U CN202307503U CN 201120423294 CN201120423294U CN202307503U CN 202307503 U CN202307503 U CN 202307503U CN 201120423294 CN201120423294 CN 201120423294 CN 201120423294 U CN201120423294 U CN 201120423294U CN 202307503 U CN202307503 U CN 202307503U
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- 239000000725 suspension Substances 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 239000012212 insulator Substances 0.000 claims description 9
- 239000003990 capacitor Substances 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- -1 Fig. 2 Chemical compound 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
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Classifications
-
- 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)
Abstract
The utility model relates to an electronic current and voltage combined transformer with a high-voltage support pillar type suspension structure. A metal electrode is arranged between an inner cylinder and an outer cylinder of a voltage equalizing shield cylinder; an insulating dielectric layer is arranged between the metal electrode and the inner cylinder or the outer cylinder of the voltage equalizing shield cylinder; a coaxial capacitive electronic voltage transformer comprises a high-voltage capacitor and a lower-voltage capacitor which are equivalently connected in series; a primary conductor, a protection casing, the voltage equalizing shield cylinder and an insulating gas SF6 among the primary conductor, the protection casing and the voltage equalizing shield cylinder are insulating media and form the high-voltage capacitor; the metal electrode, the voltage equalizing shield cylinder and the insulating dielectric layer are insulating media and form the low-voltage capacitor; and two ends of the low-voltage capacitor are connected to a voltage signal acquisition unit in the base. The electronic current and voltage combined transformer disclosed by the utility model has the advantages of simple structure, improved insulating strength, simultaneous detection of current and voltage, compact structure, high precision and reliable performance; and the electronic current and voltage combined transformer is designed on the basis of an original transformer, so that the cost is greatly reduced.
Description
Technical field
The utility model relates to a kind of novel high-pressure column support type suspension structure 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.
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, this patent document 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 this patent document; Coaxial capacitance is arranged in the Primary Conductor chamber at Primary Conductor place; Electrode is arranged on the shielding cylinder inboard, and high-low voltage capacitor 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 novel high-pressure column support type suspension structure 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 high-voltage strut formula suspension structure electronic current combination of voltages instrument transformer; The protection housing that comprises the top, the bottom, be used for fixing the insulating sleeve on base, the corresponding setting of bottom opening of protection housing with the insulating sleeve open top; The protection housing is fixedly connected through a disc insulator with insulating sleeve; The closing in of said disc insulator is held between a side and the base and is provided with stay pipe, and opposite side is fixed with all pressures shielding cylinder that is used to be located on the Primary Conductor, all presses shielding cylinder to be divided into inner core and urceolus; Be filled with the SF6 insulating gas in said protection housing and the insulating sleeve; Combination transformer comprises electronic current mutual inductor and coaxial capacitance electronic type voltage transformer; The coil of electronic current mutual inductor is arranged between the said inner core and urceolus of all pressing shielding cylinder, and 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; Be provided with metal electrode between the said inner/outer tube of all pressing shielding cylinder, metal electrode and all press between inner core or the urceolus of shielding cylinder and be provided with insulating medium layer; Said coaxial capacitance electronic type voltage transformer comprises the high-voltage capacitance and the low-voltage capacitance of equivalent series; Said Primary Conductor, protection housing are that dielectric is formed said high-voltage capacitance with all pressing shielding cylinder to reach with the SF6 insulating gas between them; Metal electrode, all press shielding cylinder and be that dielectric is formed said low-voltage capacitance with said insulating medium layer, the low-voltage capacitance two ends are connected to the voltage signal acquisition unit in the base.
Said metal electrode is arranged on the urceolus madial wall of all pressing shielding cylinder, is provided with insulating medium layer between metal electrode and the urceolus madial wall.Said metal electrode is arranged on the inner core lateral wall of all pressing shielding cylinder, is provided with insulating medium layer between metal electrode and the inner core lateral wall.Said metal electrode ground connection.Be parallel with the capacitance-resistance divider resistance between the input of said voltage signal acquisition unit.The coil of said electronic current mutual inductor is a Luo-coil.
The utility model is arranged on low-voltage capacitance on interior (outward) sidewall of the urceolus of all pressing shielding cylinder (inner core) that electronic current mutual inductor is installed, compares with being arranged on the inner core inboard in the above-mentioned patent document, and structure is terse, dielectric strength provides; Detect when realizing electric current, voltage; Compact conformation, precision is high, dependable performance; On original instrument transformer basis, design, greatly reduce cost.
Description of drawings
Fig. 1 is the structural representation of the combination transformer of the utility model;
Fig. 2 is the voltage transformer schematic diagram of the utility model;
Fig. 3 is the 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, Fig. 2, a kind of novel high-pressure column support type suspension structure electronic current combination of voltages instrument transformer shown in Figure 3; Based on column support type gas-insulated instrument transformer; The protection housing 4 that comprises the top, the bottom, be used for fixing the insulating sleeve 11 on base 23, the bottom opening and the corresponding setting of insulating sleeve 11 open tops of protection housing 4; The protection housing is fixedly connected through a disc insulator 7 with insulating sleeve; The closing in of disc insulator 7 is held and is provided with stay pipe 20 between a side and the base, and opposite side is fixed with all pressures shielding cylinder that is used to be located on the Primary Conductor, all presses shielding cylinder to be divided into inner core 6 and urceolus 5; Be filled with the SF6 insulating gas in protection housing 4 and the insulating sleeve 11; Combination transformer comprises electronic current mutual inductor and coaxial capacitance electronic type voltage transformer; The coil 1 of electronic current mutual inductor is arranged between the inner core 6 and urceolus 5 of all pressing shielding cylinder, and its coil 1 is connected to the current signal collecting unit in the base 23 through the high temperature shielding conductor 10 that is arranged in the said stay pipe 20.
The improvement of the utility model is, all presses between the inner/outer tube of shielding cylinder and is provided with metal electrode 13, and as shown in Figure 1, metal electrode 13 is arranged on urceolus 5 madial walls of all pressing shielding cylinder, is provided with insulating medium layer 12 between metal electrode 13 and urceolus 5 madial walls.As other execution modes; Metal electrode 13 can also be arranged on inner core 6 lateral walls of all pressing shielding cylinder; Be provided with between metal electrode 13 and the inner core lateral wall insulating medium layer 12 (epoxy material or directly adopt double face copper, like Fig. 2, the utility model adopts double face copper to be rolled into tubular; The space is left in the centre, prevents the continuous formation of copper-clad plate two sides copper sheet short circuit).Metal electrode 13 ground connection.
Like Fig. 1, the coaxial capacitance electronic type voltage transformer comprises the high-voltage capacitance C1 and the low-voltage capacitance C2 of equivalent series; Primary Conductor 2, protection housing 4 are that dielectric is formed said high-voltage capacitance C1 with all pressing shielding cylinder urceolus 5 to reach with the SF6 insulating gas between them; Metal electrode 13, all press shielding cylinder urceolus 5 and be that dielectric is formed said low-voltage capacitance C2 with said insulating medium layer 12, low-voltage capacitance C2 two ends are connected to the voltage signal acquisition unit 18 in the base 23.18 inputs, the 17 parallelly connected small resistor R in the voltage signal acquisition unit guarantee voltage signal progress of disease precision.
All press shielding inner/ outer tube 5,6 to realize insulation and fixing, all press shielding cylinder inner/ outer tube 5,6 to be floating potential through disc insulator 7 (, also can adopt supporting insulator, insulated tension pole) as other execution modes.Disc insulator 7 is fixed on the insulating sleeve 11 through ring flange 8, and insulating sleeve 11 is fixed on the base 23, the base 23 outside gas density tables 22 of installing, and 21 is air-filled pore.Luo-coil in the current transformer (small-power iron-core coil) 1 is built in the suspension structure of all pressing shielding urceolus 5 and inner core 6 formations; Luo-coil 1 lead-out wire 9 adopts the input terminal 15 of high temperature resistant shielding conductor through lead-in wire shielded-plate tube 20 to current signal collecting unit 16; The voltage transformer output line is connected to voltage signal acquisition unit 18; Two collecting units are installed in the base 23, and the output digital signal is through optical fiber 19 outputs.Collecting unit 16,18 is installed in base 23 inside, improves the operational environment of electronic loop, reduces electromagnetic interference, and 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.Low-voltage capacitance output two ends metal electrode and grading ring shielding cylinder two ends and the United Nations General Assembly's resistance 24 form high voltage and suppress circuit, suppress to transmit overvoltage.
Claims (6)
1. high-voltage strut formula suspension structure electronic current combination of voltages instrument transformer; The protection housing that comprises the top; The bottom, be used for fixing the insulating sleeve on base; The corresponding setting of bottom opening of protection housing with the insulating sleeve open top, the protection housing is fixedly connected through a disc insulator with insulating sleeve, and the closing in of said disc insulator is held between a side and the base and is provided with stay pipe; Opposite side is fixed with all pressures shielding cylinder that is used to be located on the Primary Conductor, all presses shielding cylinder to be divided into inner core and urceolus; Be filled with the SF6 insulating gas in said protection housing and the insulating sleeve; Combination transformer comprises electronic current mutual inductor and coaxial capacitance electronic type voltage transformer; The coil of electronic current mutual inductor is arranged between the said inner core and urceolus of all pressing shielding cylinder, and 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;
It is characterized in that, be provided with metal electrode between the said inner/outer tube of all pressing shielding cylinder, metal electrode and all press between inner core or the urceolus of shielding cylinder and be provided with insulating medium layer;
Said coaxial capacitance electronic type voltage transformer comprises the high-voltage capacitance and the low-voltage capacitance of equivalent series; Said Primary Conductor, protection housing are that dielectric is formed said high-voltage capacitance with all pressing shielding cylinder to reach with the SF6 insulating gas between them; Metal electrode, all press shielding cylinder and be that dielectric is formed said low-voltage capacitance with said insulating medium layer, the low-voltage capacitance two ends are connected to the voltage signal acquisition unit in the base.
2. a kind of high-voltage strut formula suspension structure electronic current combination of voltages instrument transformer according to claim 1; It is characterized in that; Said metal electrode is arranged on the urceolus madial wall of all pressing shielding cylinder, is provided with insulating medium layer between metal electrode and the urceolus madial wall.
3. a kind of high-voltage strut formula suspension structure electronic current combination of voltages instrument transformer according to claim 1; It is characterized in that; Said metal electrode is arranged on the inner core lateral wall of all pressing shielding cylinder, is provided with insulating medium layer between metal electrode and the inner core lateral wall.
4. according to claim 2 or 3 described a kind of high-voltage strut formula suspension structure electronic current combination of voltages instrument transformers, it is characterized in that said metal electrode ground connection.
5. a kind of high-voltage strut formula suspension structure electronic current combination of voltages instrument transformer according to claim 4 is characterized in that, is parallel with the capacitance-resistance divider resistance between the input of said voltage signal acquisition unit.
6. a kind of high-voltage strut formula suspension structure electronic current combination of voltages instrument transformer according to claim 1 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 201120423294 CN202307503U (en) | 2011-10-31 | 2011-10-31 | Electronic current and voltage combined transformer with high-voltage support pillar type suspension structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120423294 CN202307503U (en) | 2011-10-31 | 2011-10-31 | Electronic current and voltage combined transformer with high-voltage support pillar type suspension structure |
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| Publication Number | Publication Date |
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| CN202307503U true CN202307503U (en) | 2012-07-04 |
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| CN 201120423294 Expired - Fee Related CN202307503U (en) | 2011-10-31 | 2011-10-31 | Electronic current and voltage combined transformer with high-voltage support pillar type suspension structure |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018529A (en) * | 2012-12-11 | 2013-04-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| 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 |
| CN103364603A (en) * | 2013-07-24 | 2013-10-23 | 桂林电力电容器有限责任公司 | Pillar type capacitor voltage transformer |
| CN103762067A (en) * | 2014-01-02 | 2014-04-30 | 国家电网公司 | Gas-insulated multiple-output electronic post-type current-voltage combined transformer |
| CN104851581A (en) * | 2015-05-25 | 2015-08-19 | 三峡大学 | High-precision-digital-quantity-output electronic current transformer |
| CN105116211A (en) * | 2015-08-27 | 2015-12-02 | 珠海许继电气有限公司 | Suspension type phase voltage measurement device |
| CN105575637A (en) * | 2015-12-23 | 2016-05-11 | 四方继保（武汉）软件有限公司 | Gas insulated switchgear (GIS) electronic type voltage transformer with suspension plate electrode structure |
| 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 |
| CN106597050A (en) * | 2017-02-24 | 2017-04-26 | 三峡大学 | Voltage sensor capable of realizing remote lifting |
| CN107328982A (en) * | 2017-08-26 | 2017-11-07 | 登高电气有限公司 | A kind of high-voltage sensor |
| CN108918941A (en) * | 2018-07-27 | 2018-11-30 | 山东彼岸电力科技有限公司 | A kind of DC full optical fiber suspension mutual inductor |
| 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 |
| CN111089999A (en) * | 2020-02-10 | 2020-05-01 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
| CN111276315A (en) * | 2020-02-10 | 2020-06-12 | 华北电力大学 | Current-voltage transformer |
| 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 |
-
2011
- 2011-10-31 CN CN 201120423294 patent/CN202307503U/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018529B (en) * | 2012-12-11 | 2015-06-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN103018529A (en) * | 2012-12-11 | 2013-04-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| 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 |
| 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 |
| CN103364603A (en) * | 2013-07-24 | 2013-10-23 | 桂林电力电容器有限责任公司 | Pillar type capacitor voltage transformer |
| CN103762067A (en) * | 2014-01-02 | 2014-04-30 | 国家电网公司 | Gas-insulated multiple-output electronic post-type current-voltage combined transformer |
| CN104851581A (en) * | 2015-05-25 | 2015-08-19 | 三峡大学 | High-precision-digital-quantity-output electronic current transformer |
| CN104851581B (en) * | 2015-05-25 | 2016-07-27 | 三峡大学 | A kind of high accuracy number amount output electronic current mutual inductor |
| CN105116211A (en) * | 2015-08-27 | 2015-12-02 | 珠海许继电气有限公司 | Suspension type phase voltage measurement device |
| CN105116211B (en) * | 2015-08-27 | 2018-03-16 | 珠海许继电气有限公司 | A kind of floating type phase voltage measurement apparatus |
| CN105575637B (en) * | 2015-12-23 | 2017-11-24 | 四方继保（武汉）软件有限公司 | A kind of GIS electronic type voltage transformers of suspension plate electrode structures |
| CN105575637A (en) * | 2015-12-23 | 2016-05-11 | 四方继保（武汉）软件有限公司 | Gas insulated switchgear (GIS) electronic type voltage transformer with suspension plate electrode structure |
| 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 mutual inductor |
| CN106597050A (en) * | 2017-02-24 | 2017-04-26 | 三峡大学 | Voltage sensor capable of realizing remote lifting |
| CN107328982A (en) * | 2017-08-26 | 2017-11-07 | 登高电气有限公司 | A kind of high-voltage sensor |
| CN108918941A (en) * | 2018-07-27 | 2018-11-30 | 山东彼岸电力科技有限公司 | A kind of DC full optical fiber suspension mutual inductor |
| 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 |
| CN111089999A (en) * | 2020-02-10 | 2020-05-01 | 华北电力大学 | Parallel AC high-voltage line voltage measuring device and method |
| CN111276315A (en) * | 2020-02-10 | 2020-06-12 | 华北电力大学 | Current-voltage transformer |
| CN111276315B (en) * | 2020-02-10 | 2021-04-23 | 华北电力大学 | Current-voltage transformer |
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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: 20131128 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: 20120704 Termination date: 20191031 |
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| CF01 | Termination of patent right due to non-payment of annual fee |