CN202384167U - Single-phase GIS (geographic information system) suspension structure electronic current-voltage combined transformer - Google Patents
Single-phase GIS (geographic information system) suspension structure electronic current-voltage combined transformer Download PDFInfo
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- CN202384167U CN202384167U CN 201120423298 CN201120423298U CN202384167U CN 202384167 U CN202384167 U CN 202384167U CN 201120423298 CN201120423298 CN 201120423298 CN 201120423298 U CN201120423298 U CN 201120423298U CN 202384167 U CN202384167 U CN 202384167U
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- electronic current
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- suspension structure
- floating potential
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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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Abstract
The utility model relates to a GIS (geographic information system) suspension structure electronic current-voltage combined transformer. Based on the existing GIS transformer, a suspension electric potential cylinder which is coaxial with a primary conductor is fixed on a pressure container in an insulating manner, the outer wall of the suspension electric potential cylinder is coated with a copper foil layer, and an insulating medium layer is arranged between the suspension electrical potential cylinder and the copper foil layer. The GIS suspension structure electronic current-voltage combined transformer provided by the utility model has the advantages of compact structure, high insulating strength and is improved on the basis of the existing transformer; and the coaxial capacitors can be arranged outwards gradually from the primary conductor, the insulating property is high, the reliability and the stability are enhanced, and current and voltage are simultaneously detected, the structure is compact, the accuracy is high, and the cost is greatly reduced.
Description
Technical field
The utility model relates to a kind of novel single-phase GIS 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; 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; 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 single-phase GIS suspension structure electronic current combination of voltages instrument transformer, on the architecture basics of original GIS 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 novel single-phase GIS suspension structure electronic current combination of voltages instrument transformer; Comprise the pressure vessel that is used to wear Primary Conductor; Insulation is fixed with one and is used for the floating potential tube coaxial with Primary Conductor on the pressure vessel, is covered with copper foil layer on the floating potential drum outer wall, is provided with insulating medium layer between floating potential tube and the copper foil layer; Also be equipped with on the said floating potential drum outer wall and all press shielding cylinder; Combination transformer comprises electronic current mutual inductor and coaxial capacitance electronic type voltage transformer, and the coil of electronic current mutual inductor is arranged on saidly all presses in the shielding cylinder; Said coaxial capacitance electronic type voltage transformer comprises the high-voltage capacitance and the low-voltage capacitance of equivalent series, and it is that dielectric is formed said high-voltage capacitance that said Primary Conductor, floating potential tube reach with the SF6 insulating gas between them; It is that dielectric is formed said low-voltage capacitance that floating potential tube, copper foil layer reach with the said insulating medium layer between them.
Said copper foil layer ground connection.The low-voltage capacitance two ends connect the voltage signal acquisition unit through high temperature resistant multiple twin shielding conductor.Be parallel with the capacitance-resistance divider resistance between the input of said voltage signal acquisition unit.The finish lead of said electronic current mutual inductor connects the current signal collecting unit through high temperature resistant multiple twin shielding conductor.Said electronic current mutual inductor is a Luo-coil.
Because existing GIS 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 instrument transformer basis, improves forming.Coaxial capacitance outwards arranges progressively that from Primary Conductor insulation property are high, 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 a suspension positioning tube structure chart;
Fig. 3 is the electronic type voltage transformer schematic diagram of the utility model;
Fig. 4 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, Fig. 2, Fig. 3, a kind of single-phase GIS suspension structure electronic current combination of voltages instrument transformer shown in Figure 4, comprise the pressure vessel 4 that is used to wear Primary Conductor 5, insulation is fixed with one and is used for the floating potential tube 7 coaxial with Primary Conductor 5 on the pressure vessel 4; Be covered with copper foil layer 8 on floating potential tube 7 outer walls; Be provided with insulating medium layer 20 between floating potential tube 7 and the copper foil layer 8 and (like Fig. 2, directly adopt the bilayer copper clad plate, two-layer Copper Foil 81; 82, middle insulated medium layer 20); Also be equipped with on floating potential tube 7 outer walls and all press shielding cylinder 9 (aluminum hull); The processing of need becoming attached between floating potential cylindrical shell 7 and the pressure vessel 4, floating potential cylindrical shell body is through bolt 10 fixing backs and do the insulation processing, and 6 is clip.
Combination transformer comprises electronic current mutual inductor and coaxial capacitance electronic type voltage transformer, and the coil 11 of electronic current mutual inductor is arranged on said all the pressure in the shielding cylinder 9; Luo-coil in the current transformer (small-power iron-core coil) 11 epoxy castings place aluminum hull 9 and are fixed on the flange of pressure vessel 4 with bolt 10.
Said coaxial capacitance electronic type voltage transformer comprises the high-voltage capacitance C1 and the low-voltage capacitance C2 of equivalent series, said Primary Conductor 5, floating potential tube 7 and be that dielectric is formed said high-voltage capacitance C1 with the SF6 insulating gas between them; Floating potential tube 7, copper foil layer 8 and be that dielectric is formed said low-voltage capacitance C2 with the said insulating medium layer between them 20.Floating potential cylindrical shell 7 is a floating potential, covers Copper Foil 8 ground connection.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 epoxy fibreglass or utilize double face copper directly to form low-voltage capacitance) of SF6 gas-insulated medium layer or increase.
Luo-coil 11 lead-out wires and voltage sensor head lead-out wire adopt high temperature resistant multiple twin shielding conductor to cause binding post 2; From binding post 2 signal being introduced collecting unit 1 with lead again (is divided into voltage signal acquisition unit and current signal collecting unit, is parallel with capacitance-resistance divider resistance R between the input of voltage signal acquisition unit.), live collector 1 and binding post 2 by shielding cover cap 3, reserve wire hole output digital signal line, signal is exported through optical fiber.Behind suitable resistance of parallel connection voltage signal is being introduced binding post 2 between high-voltage capacitance and the low-voltage capacitance, current signal causes binding post 2, introduces collecting unit 1 by binding post 2, and collecting unit 1 converts digital optical signal to and exports through optical fiber.Collecting unit is installed in the radome 3, improves the operational environment of electronic loop, reduces electromagnetic interference, and power supply is collecting unit 1 power supply on the spot, overcomes the problem that active instrument transformer exists, and power supply is stable.Low-voltage capacitance output two ends and the United Nations General Assembly's resistance form high voltage and suppress circuit.
Claims (6)
1. single-phase GIS suspension structure electronic current combination of voltages instrument transformer; Comprise the pressure vessel that is used to wear Primary Conductor; It is characterized in that; Insulation is fixed with one and is used for the floating potential tube coaxial with Primary Conductor on the pressure vessel, is covered with copper foil layer on the floating potential drum outer wall, is provided with insulating medium layer between floating potential tube and the copper foil layer; Also be equipped with on the said floating potential drum outer wall and all press shielding cylinder;
Combination transformer comprises electronic current mutual inductor and coaxial capacitance electronic type voltage transformer, and the coil of electronic current mutual inductor is arranged on saidly all presses in the shielding cylinder;
Said coaxial capacitance electronic type voltage transformer comprises the high-voltage capacitance and the low-voltage capacitance of equivalent series, and it is that dielectric is formed said high-voltage capacitance that said Primary Conductor, floating potential tube reach with the SF6 insulating gas between them; It is that dielectric is formed said low-voltage capacitance that floating potential tube, copper foil layer reach with the said insulating medium layer between them.
2. a kind of single-phase GIS suspension structure electronic current combination of voltages instrument transformer according to claim 1 is characterized in that said copper foil layer ground connection.
3. a kind of single-phase GIS suspension structure electronic current combination of voltages instrument transformer according to claim 1 is characterized in that, the low-voltage capacitance two ends connect the voltage signal acquisition unit through high temperature resistant multiple twin shielding conductor.
4. a kind of single-phase GIS suspension structure electronic current combination of voltages instrument transformer according to claim 3 is characterized in that, is parallel with the capacitance-resistance divider resistance between the input of said voltage signal acquisition unit.
5. a kind of single-phase GIS suspension structure electronic current combination of voltages instrument transformer according to claim 1 is characterized in that, the finish lead of said electronic current mutual inductor connects the current signal collecting unit through high temperature resistant multiple twin shielding conductor.
6. a kind of single-phase GIS suspension structure electronic current combination of voltages instrument transformer according to claim 5 is characterized in that said electronic current mutual inductor is a Luo-coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120423298 CN202384167U (en) | 2011-10-31 | 2011-10-31 | Single-phase GIS (geographic information system) suspension structure electronic current-voltage combined transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120423298 CN202384167U (en) | 2011-10-31 | 2011-10-31 | Single-phase GIS (geographic information system) suspension structure electronic current-voltage combined transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202384167U true CN202384167U (en) | 2012-08-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120423298 Expired - Fee Related CN202384167U (en) | 2011-10-31 | 2011-10-31 | Single-phase GIS (geographic information system) suspension structure electronic current-voltage combined transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202384167U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021646A (en) * | 2012-09-03 | 2013-04-03 | 常州博瑞电力自动化设备有限公司 | Electronic current/voltage transformer-shielding cylinder for GISes (gas-insulated switchgears) |
| CN103208360A (en) * | 2013-03-21 | 2013-07-17 | 许继集团有限公司 | Electronic-type current-voltage-combined transformer for GIS (gas insulated switchgear) |
| CN105467186A (en) * | 2015-12-04 | 2016-04-06 | 国家电网公司 | An electronic voltage transformer used for a GIS |
| CN105489361A (en) * | 2015-12-04 | 2016-04-13 | 国家电网公司 | Electronic current-voltage combined transducer for GIS |
| 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 |
| CN105588966A (en) * | 2015-12-04 | 2016-05-18 | 国家电网公司 | Gas insulated classification type voltage transformer |
| CN105761913A (en) * | 2016-02-03 | 2016-07-13 | 四方继保（武汉）软件有限公司 | Electromagnetic shielding structure of GIS electronic mutual inductor |
| 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 |
-
2011
- 2011-10-31 CN CN 201120423298 patent/CN202384167U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103021646A (en) * | 2012-09-03 | 2013-04-03 | 常州博瑞电力自动化设备有限公司 | Electronic current/voltage transformer-shielding cylinder for GISes (gas-insulated switchgears) |
| CN103208360B (en) * | 2013-03-21 | 2016-04-20 | 许继集团有限公司 | A kind of GIS electronic current-voltage combination transformer |
| CN103208360A (en) * | 2013-03-21 | 2013-07-17 | 许继集团有限公司 | Electronic-type current-voltage-combined transformer for GIS (gas insulated switchgear) |
| CN105588966A (en) * | 2015-12-04 | 2016-05-18 | 国家电网公司 | Gas insulated classification type voltage transformer |
| CN105489361A (en) * | 2015-12-04 | 2016-04-13 | 国家电网公司 | Electronic current-voltage combined transducer for GIS |
| CN105467186A (en) * | 2015-12-04 | 2016-04-06 | 国家电网公司 | An electronic voltage transformer used for a GIS |
| CN105489361B (en) * | 2015-12-04 | 2018-08-03 | 国家电网公司 | GIS electronic current-voltage combination transformers |
| CN105467186B (en) * | 2015-12-04 | 2018-09-21 | 国家电网公司 | A kind of GIS electronic type voltage transformers |
| 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 |
| 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 |
| CN105761913A (en) * | 2016-02-03 | 2016-07-13 | 四方继保（武汉）软件有限公司 | Electromagnetic shielding structure of GIS electronic mutual inductor |
| CN105761913B (en) * | 2016-02-03 | 2017-07-18 | 四方继保（武汉）软件有限公司 | A kind of electromagnetic armouring structure of GIS electronic transformer |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20191031 |