CN102479610A - Combined electronic mutual inductor - Google Patents
Combined electronic mutual inductor Download PDFInfo
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- CN102479610A CN102479610A CN2010105612839A CN201010561283A CN102479610A CN 102479610 A CN102479610 A CN 102479610A CN 2010105612839 A CN2010105612839 A CN 2010105612839A CN 201010561283 A CN201010561283 A CN 201010561283A CN 102479610 A CN102479610 A CN 102479610A
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Abstract
The invention relates to a combined electronic mutual inductor. The combined mutual inductor comprises a shell, primary conductive rods, current coil shielding cylinders, current coils, shielding cylinders, intermediate electrodes, grounding electrodes, an upper pan-type insulator and a lower pan-type insulator, wherein the upper half shell of the shell is fixedly provided with upper positioning flanges; the primary conductive rods are connected with a conductive body of the upper pan-type insulator; the upper positioning flanges are fixedly provided with the current coil shielding cylinders; the current coils are arranged at the periphery of the current coil shielding cylinders; the shielding cylinders are arranged at the periphery of the primary conductive rods; and one end of each shielding cylinder is connected with the primary conductive rods, and the other end of the shielding cylinder is separated from the primary conductive rods. A current mutual inductor and a voltage mutual inductor are combined into a whole, so that the whole combined electronic mutual inductor has a compact structure and a small volume. The shielding cylinders, the intermediate electrodes, the grounding electrodes and the shell are made of aluminum alloy materials with low expansion coefficients, air vents are formed on the shielding cylinders, and all ports are designed into arc-shaped forms, so that point discharge is reduced, and internal electric fields are uniform.
Description
Technical field
The present invention relates to a kind of electric mutual inductor that power industry is used, a kind of specifically combined electronic transformer.
Background technology
Through the relevant patent documentation of retrieval, do not retrieve the combined electronic transformer identical at present as yet with structure of the present invention.Existing high-voltage mutual inductor mainly is divided into the voltage transformer summation current transformer.High-tension current inductor is divided into oil-immersed current transformer and sulfur hexafluoride current mutual inductor again.Because structural reason oil-immersed current transformer and sulfur hexafluoride current mutual inductor generally all have iron core; Take electromagnetic induction to carry out the conversion of data; This type of current transformer so meeting magnetic saturation phenomenon occurs, obviously reduces the electromagnetic induction ability owing to use iron core; Situation such as volume is big in addition makes overall weight obviously heavier.Induction instrument transformer volume is big though existing electronic current mutual inductor and voltage transformer have overcome, the heavier defective of weight, generally has only the version of separate current instrument transformer, voltage transformer.China's patent " novel high voltage combined independent electronic type current, voltage transformer " patent No.: 2007200300527.1; A kind of electronic current, voltage transformer are disclosed; Though this structure significantly alleviates overall weight; But because structural reason makes integral body be difficult to obtain on portion's Electric Field Distribution evenly within it, its shield effectiveness, anti-jamming capacity are poor, are difficult to satisfy the requirement of high-performance test; So be necessary existing combined electrical minor electric current, voltage transformer are improved, to improve the result of use of equipment.
Summary of the invention
The objective of the invention is to provide a kind of improvement on existing electronic mutual inductor basis, it is good to have a shield effectiveness, and simple in structure, compact, the uniform a kind of combined electronic transformer of Electric Field Distribution.
Technical characterictic of the present invention is: considering on the basis that Electric Field Distribution is even, certainty of measurement is high; Be designed to by housing, primary conductive bar, current coil shielding cylinder, current coil, go up locating flange, shielding cylinder, target, grounding electrode, go up disc insulator, down locating flange, a kind of combined electronic transformer of forming is supported in disc insulator, insulation down, is being fixed with locating flange on the casing-upper half of housing; Last disc insulator is connected with housing; The primary conductive bar is connected with the electric conductor of last disc insulator; On last locating flange, be fixed with the current coil shielding cylinder; Be provided with current coil in current coil shielding cylinder periphery; Three groups of primary conductive bars, current coil shielding cylinder, current coil are distributed on and form the three-phase electronic current transformer in the housing; Periphery at the primary conductive bar is provided with shielding cylinder, and described shielding cylinder one end links to each other with the primary conductive bar, and the other end and the insulation of primary conductive bar separate, and make shielding cylinder form high-field electrode; On the bottom shelf half of housing, be fixed with locating flange down; Be fixed with grounding electrode on the locating flange down; On grounding electrode, be fixed with target through the insulation support; On the bottom shelf half of housing, be fixed with disc insulator down; In the inner chamber of housing, be filled with sulfur hexafluoride gas.
Described housing is the metal cylinder that material is processed for adopting the low-expansion coefficient aluminium alloy, and the casing-upper half outer surface of housing is the arc shape structure, and the bottom shelf half outer surface of housing is the arc shape structure.
The output signal output closed shield of the secondary winding that described current coil shielding cylinder forms current coil is portion within it, and the skeleton of the winding coil of current coil shielding cylinder is the support body that nonmagnetic substance is processed.
Described shielding cylinder is that the metal cylinder that material is processed makes it form high-field electrode for adopting the low-expansion coefficient aluminium alloy, and on cylindrical shell, is provided with louvre, and end I, end II are the arc shape structure.
Described target is the metal arc cylindrical shell that material is processed for adopting the low-expansion coefficient aluminium alloy, and the upper end is a warpage shape structure.
Described grounding electrode is the metal arc cylindrical shell that material is processed for adopting the low-expansion coefficient aluminium alloy, and lower port is the arc shape structure.
During use; Electric current is incorporated in the disc insulator through conducting rod; And electric current is incorporated in the housing through the primary conductive bar; Make through electromagnetic induction on the current coil of secondary winding and induce electric current, and will export signal and be input in the secondary output connection box, and its induction output signal is converted into digital output signal and is sent to and carries out Data Detection and collection in the control room through gathering its analog output signal; Electric current in the primary conductive bar again with the shielding cylinder effect that is packed on the primary conductive bar; Make it form high potential and also will export induction of signal to target through induction; Electromagnetic induction is exported signal export, thereby numeral is collected through target, grounding electrode.Shielding cylinder is provided with several louvres and its objective is for the ease of the heat between shielding cylinder and the conducting rod can be shed as early as possible, avoids the shielding cylinder temperature too high and cause instability setting; The end of shielding cylinder, target, grounding electrode is designed to arc shape, its objective is in order to reduce point discharge, and internal electric field evenly is provided with; It is that material is processed that shielding cylinder, target, grounding electrode, housing adopt low-expansion aluminium alloy, its objective is that minimizing brings because of variations in temperature to make that data are unstable to be provided with.
Advantage of the present invention is: be arranged in the housing because current transformer and voltage transformer are combined to form an integral body, thereby make compact integral structure, volume is little; Because three groups of electrode assemblies are distributed in the housing, thereby internal electric field is evenly distributed; Because the external Design of housing becomes the circular arc state, thereby makes whole self-cleaning property good; Because it is that material is processed that shielding cylinder, target, grounding electrode, housing all adopt low-expansion aluminium alloy, thereby make whole, dependable performance little with variations in temperature; Owing to shielding cylinder is packed on the primary conductive bar, thereby makes the not only shielded effect of shielding cylinder, and can play the effect of high-field electrode, reach the purpose of achieving many things at one stroke; Owing on shielding cylinder, be provided with louvre, thereby make good heat dissipation effect, stable performance; Since the form of shielding cylinder, target, each port design camber shape of grounding electrode, thus point discharge reduced, make internal electric field even; Because the inner sulfur hexafluoride gas that adopts carries out insulation protection, thereby good insulation preformance; Because compact conformation, rationally simple, dependable performance is so there is very big practical and popularizing value.
Description of drawings
Below will combine accompanying drawing that the present invention is further described:
Accompanying drawing 1 is the structural representation of a kind of combined electronic transformer of the present invention;
Accompanying drawing 2 is A-A cross-sectional view of accompanying drawing 1;
Accompanying drawing 3 is structural representations of a kind of current coil shielding cylinder of combined electronic transformer;
Accompanying drawing 4 is structural representations of a kind of shielding cylinder of combined electronic transformer;
Accompanying drawing 5 is structural representations of a kind of target of combined electronic transformer;
Accompanying drawing 6 is structural representations of a kind of grounding electrode of combined electronic transformer.
Embodiment
With reference to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, accompanying drawing 6; A kind of combined electronic transformer of the present invention; By housing 1, primary conductive bar 2, current coil shielding cylinder 3, current coil 4, go up locating flange 5, shielding cylinder 6, target 7, grounding electrode 8, go up disc insulator 9, down locating flange 10, disc insulator 11, insulation are supported 12 and are formed down, on the casing-upper half 1a of housing 1, are fixed with locating flange 5; Described housing 1 is the metal cylinder that material is processed for adopting the low-expansion coefficient aluminium alloy, and the casing-upper half 1a outer surface of housing 1 is the arc shape structure, and the bottom shelf half 1b outer surface of housing 1 is the arc shape structure; Last disc insulator 9 is connected with housing 1; Primary conductive bar 2 is connected with the electric conductor of last disc insulator 9; On last locating flange 5, be fixed with current coil shielding cylinder 3, be provided with current coil 4 in current coil shielding cylinder 3 peripheries; Three groups of primary conductive bars 2; Current coil shielding cylinder 3, current coil 4 are distributed on and form the three-phase electronic current transformer in the housing 1; The output signal closed shield of the secondary winding that described current coil shielding cylinder 3 forms current coil 4 is portion within it, and the skeleton of the winding coil of current coil shielding cylinder 3 is the support body that nonmagnetic substance is processed; Be provided with shielding cylinder 6 in the periphery of primary conductive bar 2; Described shielding cylinder 6 one ends link to each other with primary conductive bar 2; The other end and 2 insulation of primary conductive bar separate, and make shielding cylinder 6 form high-field electrode, and described shielding cylinder 6 is that the metal cylinder that material is processed makes it form high-field electrode for adopting the low-expansion coefficient aluminium alloy; And on cylindrical shell 61, being provided with louvre 62, end I 63, end II 64 are the arc shape structure; On the bottom shelf half 1b of housing 1, be fixed with locating flange 10 down; Be fixed with grounding electrode 8 on the locating flange 10 down, described grounding electrode 8 is the metal arc cylindrical shell that material is processed for adopting the low-expansion coefficient aluminium alloy, and lower port 81 is the arc shape structure; On grounding electrode 8, support 12 through insulation and be fixed with target 7, described target 7 is the metal arc cylindrical shell that material is processed for adopting the low-expansion coefficient aluminium alloy, and upper end 71 is a warpage shape structure; On the bottom shelf half 1b of housing 1, be fixed with disc insulator 11 down; In the inner chamber of housing 1, be filled with sulfur hexafluoride gas.
Claims (6)
1. combined electronic transformer; By housing (1), primary conductive bar (2), current coil shielding cylinder (3), current coil (4), go up locating flange (5), shielding cylinder (6), target (7), grounding electrode (8), go up disc insulator (9), down locating flange (10), disc insulator (11), insulation are supported (12) and are formed down, it is characterized in that: on the casing-upper half (1a) of housing (1), be fixed with locating flange (5); Last disc insulator (9) is connected with housing (1); Primary conductive bar (2) is connected with the electric conductor of last disc insulator (9); On last locating flange (5), be fixed with current coil shielding cylinder (3); Be provided with current coil (4) in current coil shielding cylinder (3) periphery; Three groups of primary conductive bars (2), current coil shielding cylinder (3), current coil (4) are distributed on and form the three-phase electronic current transformer in the housing (1); Be provided with shielding cylinder (6) in the periphery of primary conductive bar (2), described shielding cylinder (6) one ends link to each other with primary conductive bar (2), and the other end and primary conductive bar (2) insulation separate, and make shielding cylinder (6) form high-field electrode; On the bottom shelf half (1b) of housing (1), be fixed with locating flange (10) down; Be fixed with grounding electrode (8) on the locating flange (10) down; Upward support (12) at grounding electrode (8) and be fixed with target (7) through insulation; On the bottom shelf half (1b) of housing (1), be fixed with disc insulator (11) down; In the inner chamber of housing (1), be filled with sulfur hexafluoride gas.
2. a kind of combined electronic transformer according to claim 1; It is characterized in that: described housing (1) is the metal cylinder that material is processed for adopting the low-expansion coefficient aluminium alloy; Casing-upper half (1a) outer surface of housing (1) is the arc shape structure, and bottom shelf half (1b) outer surface of housing (1) is the arc shape structure.
3. a kind of combined electronic transformer according to claim 1; It is characterized in that: the output signal closed shield of the secondary winding that described current coil shielding cylinder (3) forms current coil (4) is portion within it, and the skeleton of the winding coil of current coil shielding cylinder (3) is the support body that nonmagnetic substance is processed.
4. a kind of combined electronic transformer according to claim 1; It is characterized in that: described shielding cylinder (6) is that the metal cylinder that material is processed makes it form high-field electrode for adopting the low-expansion coefficient aluminium alloy; And on cylindrical shell (61), being provided with louvre (62), end I (63), end II (64) they are the arc shape structure.
5. a kind of combined electronic transformer according to claim 1 is characterized in that: described target (7) is the metal arc cylindrical shell that material is processed for adopting the low-expansion coefficient aluminium alloy, and upper end (71) are warpage shape structure.
6. a kind of combined electronic transformer according to claim 1 is characterized in that: described grounding electrode (8) is the metal arc cylindrical shell that material is processed for adopting the low-expansion coefficient aluminium alloy, and lower port (81) is the arc shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105612839A CN102479610A (en) | 2010-11-26 | 2010-11-26 | Combined electronic mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105612839A CN102479610A (en) | 2010-11-26 | 2010-11-26 | Combined electronic mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102479610A true CN102479610A (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105612839A Pending CN102479610A (en) | 2010-11-26 | 2010-11-26 | Combined electronic mutual inductor |
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| CN (1) | CN102479610A (en) |
Cited By (4)
| 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 |
| CN106128659A (en) * | 2016-08-15 | 2016-11-16 | 江苏智达高压电气有限公司 | A kind of extra-high voltage electroceramics external insulation outlet sleeve |
| CN110911138A (en) * | 2018-09-14 | 2020-03-24 | 河南平芝高压开关有限公司 | Current transformer kuppe and GIS equipment |
| CN116564683A (en) * | 2023-05-15 | 2023-08-08 | 浙江天际互感器股份有限公司 | Three-phase integrated zero sequence current transformer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101790A (en) * | 1986-03-13 | 1987-09-30 | Mwb传感器制造股份公司 | Combined high-tension current and voltage transformer |
| JPH0590049A (en) * | 1991-09-25 | 1993-04-09 | Hokkaido Electric Power Co Inc:The | Transformer for electricity utility meter |
| CN2244246Y (en) * | 1995-04-14 | 1997-01-01 | 上海Mwb互感器有限公司 | Independent sulfur hexafluoride mutural inductor |
| CN2754195Y (en) * | 2004-09-23 | 2006-01-25 | 山东泰开互感器有限公司 | Outdoor high-voltage combined mutual inductor |
| CN101256895A (en) * | 2007-12-29 | 2008-09-03 | 武汉格蓝若光电互感器有限公司 | Novel high voltage combined independent electronic type current, voltage mutual inductor |
| CN201229847Y (en) * | 2008-06-18 | 2009-04-29 | 吉林省电力有限公司电力科学研究院 | Weak output capacitor type voltage mutual inductor |
| CN201638666U (en) * | 2009-12-28 | 2010-11-17 | 上海卓高电气有限公司 | 110kV single-phase electromagnetic type voltage transformer without partial discharge |
| CN201918255U (en) * | 2010-11-26 | 2011-08-03 | 江苏思源赫兹互感器有限公司 | Combined type electronic mutual inductor |
-
2010
- 2010-11-26 CN CN2010105612839A patent/CN102479610A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101790A (en) * | 1986-03-13 | 1987-09-30 | Mwb传感器制造股份公司 | Combined high-tension current and voltage transformer |
| JPH0590049A (en) * | 1991-09-25 | 1993-04-09 | Hokkaido Electric Power Co Inc:The | Transformer for electricity utility meter |
| CN2244246Y (en) * | 1995-04-14 | 1997-01-01 | 上海Mwb互感器有限公司 | Independent sulfur hexafluoride mutural inductor |
| CN2754195Y (en) * | 2004-09-23 | 2006-01-25 | 山东泰开互感器有限公司 | Outdoor high-voltage combined mutual inductor |
| CN101256895A (en) * | 2007-12-29 | 2008-09-03 | 武汉格蓝若光电互感器有限公司 | Novel high voltage combined independent electronic type current, voltage mutual inductor |
| CN201229847Y (en) * | 2008-06-18 | 2009-04-29 | 吉林省电力有限公司电力科学研究院 | Weak output capacitor type voltage mutual inductor |
| CN201638666U (en) * | 2009-12-28 | 2010-11-17 | 上海卓高电气有限公司 | 110kV single-phase electromagnetic type voltage transformer without partial discharge |
| CN201918255U (en) * | 2010-11-26 | 2011-08-03 | 江苏思源赫兹互感器有限公司 | Combined type electronic mutual inductor |
Cited By (7)
| 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 |
| CN103018529B (en) * | 2012-12-11 | 2015-06-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN106128659A (en) * | 2016-08-15 | 2016-11-16 | 江苏智达高压电气有限公司 | A kind of extra-high voltage electroceramics external insulation outlet sleeve |
| CN106128659B (en) * | 2016-08-15 | 2018-07-13 | 江苏智达高压电气有限公司 | A kind of extra-high voltage electroceramics external insulation outlet sleeve |
| CN110911138A (en) * | 2018-09-14 | 2020-03-24 | 河南平芝高压开关有限公司 | Current transformer kuppe and GIS equipment |
| CN116564683A (en) * | 2023-05-15 | 2023-08-08 | 浙江天际互感器股份有限公司 | Three-phase integrated zero sequence current transformer |
| CN116564683B (en) * | 2023-05-15 | 2024-01-05 | 浙江天际互感器股份有限公司 | Three-phase integrated zero sequence current transformer |
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Application publication date: 20120530 |