CN105467187B - A kind of stagewise voltage transformer - Google Patents
A kind of stagewise voltage transformer Download PDFInfo
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- CN105467187B CN105467187B CN201510886208.2A CN201510886208A CN105467187B CN 105467187 B CN105467187 B CN 105467187B CN 201510886208 A CN201510886208 A CN 201510886208A CN 105467187 B CN105467187 B CN 105467187B
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- metal layer
- layer
- dielectric layer
- insulation dielectric
- field electrode
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- 239000002184 metal Substances 0.000 claims abstract description 86
- 229910052751 metal Inorganic materials 0.000 claims abstract description 86
- 238000009413 insulation Methods 0.000 claims abstract description 22
- 238000009422 external insulation Methods 0.000 claims abstract description 16
- 239000004020 conductor Substances 0.000 claims description 12
- 238000007667 floating Methods 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The present invention relates to a kind of stagewise voltage transformers, including the interior insulation dielectric layer being coaxially set and external insulation dielectric layer, the inner surface of interior insulation dielectric layer is sticked and has the first metal layer, the outer surface of interior insulation dielectric layer is sticked and has second metal layer, the inner surface of external insulation dielectric layer is sticked the 3rd metal layer having on the outside of second metal layer, the outer surface of external insulation dielectric layer, which is sticked, the 4th metal layer, second metal layer includes at least one inside low-field electrode, 3rd metal layer includes and the one-to-one outside low pressure electrode of inside low-field electrode number, inside low-field electrode and corresponding outside low pressure electrode short circuit.The present invention solves the problems, such as that this continuous setting structure of metal layer, insulating medium layer, metal layer, insulating medium layer, metal layer is more demanding to processing technology in the prior art.
Description
Technical field
The present invention relates to a kind of stagewise voltage transformers.
Background technology
As electric system develops to large capacity, super-pressure and extra-high voltage direction, power equipment is minimized, it is intelligent,
The requirement of high reliability is also higher and higher, and national grid proposes intelligent grid 110KV and more than power station measuring system double guarantors
The principle of shield, in order to meet current intelligent grid requirement, there is an urgent need for a kind of miniaturization, reliability is high, multi output formula with high accuracy is electric
Press mutual inductor.Existing such voltage transformer " GIS multi output electronic type electricity as disclosed in Chinese patent CN203772925U
Press mutual inductor ", which includes pressure vessel, be provided with from the inside to the outside in pressure vessel Primary Conductor, suspension cylinder,
The first metal layer, second metal layer and the 3rd metal layer, the first metal layer are attached on suspension electrode, and second metal layer includes two
The low-field electrode of a tile structure, circumferentially-spaced arrangement of each low-field electrode along Primary Conductor, the first metal layer and the second metal
Inside and outside insulating medium layer is respectively arranged between layer and between second metal layer and the 3rd metal layer.The voltage transformer uses
Capacitance partial pressure structure, using Primary Conductor and suspension cylinder as high-voltage capacitance, the coaxial metal layer structure separated with insulation is made
For low-voltage capacitance, low-voltage capacitance side and upper resistance introducing collector after integrated, amplification, double A/D conversion, pass through opto-electronic conversion
Device is converted into optical signal and is measured after intelligent acess combining unit synchronization process in protection equipment.Existing this stagewise voltage
Mutual inductor there are problems that being：In the surfaces externally and internally of an insulating medium layer technique of metal layer is set to be easier to realize, still
This continuous setting technique of being close to of metal layer, insulating medium layer, metal layer, insulating medium layer, metal layer is relatively difficult to achieve, processes work
Skill requirement is high, it is not easy to realize, the cost is relatively high.
The content of the invention
It is an object of the invention to provide a kind of stagewise voltage transformer, to solve metal layer, insulation in the prior art
The problem of this continuous setting structure of dielectric layer, metal layer, insulating medium layer, metal layer is more demanding to processing technology.
To solve the above-mentioned problems, the technical scheme is that：
A kind of stagewise voltage transformer, it is interior exhausted including the interior insulation dielectric layer being coaxially set and external insulation dielectric layer
The inner surface of edge dielectric layer, which is sticked, the first metal layer, and the outer surface of interior insulation dielectric layer, which is sticked, second metal layer, external insulation
The inner surface of dielectric layer is sticked the 3rd metal layer being located at interval on the outside of second metal layer, the appearance face paste of external insulation dielectric layer
Equipped with the 4th metal layer, second metal layer includes at least one inside low-field electrode, and the 3rd metal layer includes and inside low tension
The one-to-one outside low pressure electrode of pole number, inside low-field electrode and corresponding outside low pressure electrode short circuit.
Insulating cement is filled in gap between second metal layer and the 3rd metal layer.
The inner coaxial line of the first metal layer, which is sticked, floating potential cylinder, and the inner coaxial line of floating potential cylinder is provided with one
Partial conductor.
First, second, third and fourth metal layer is copper foil layer.
Inside low-field electrode has at least two, and inside low-field electrode is the tile knot being coaxially set with interior insulation dielectric layer
Structure, outside low pressure electrode are the tile structure being coaxially set with external insulation dielectric layer, and each inside low-field electrode is situated between along interior insulation
Matter layer is provided at circumferentially spaced, the gap between adjacent inboard low-field electrode along interior insulation dielectric layer radial direction with it is corresponding adjacent outer
Gap between the low-field electrode of side is just corresponding.
Beneficial effects of the present invention are：The first metal layer, second metal layer are attached at interior insulation medium respectively in the present invention
In the inner and outer surfaces of layer, the 3rd metal layer, the 4th metal layer are attached at respectively in the inner and outer surfaces of external insulation dielectric layer, and second
Metal layer and the 3rd metal layer are arranged at intervals so that the first metal layer, interior insulation dielectric layer and second metal layer form a list
Member, the 3rd metal layer, external insulation dielectric layer and the 4th metal layer also form a unit, and each unit is all easy to process, and simplify
Product processing technique reduces the cost of manufacture of product.
Description of the drawings
Fig. 1 is the structure diagram of one embodiment of the present of invention；
Fig. 2 is the sectional view along A-A of Fig. 1；
Fig. 3 is the cooperation schematic diagram of inside and outside insulating medium layer and corresponding metal layer in Fig. 2；
Fig. 4 is the electrical schematic diagram of Fig. 2.
Specific embodiment
A kind of embodiment of stagewise voltage transformer is as shown in figures 1-4：Including pressure vessel 10, in pressure vessel 10
Primary Conductor 1 is provided with, being coaxially set on the outside of Primary Conductor has floating potential cylinder 2, interior insulation dielectric layer 4 and external insulation to be situated between
Matter layer 8, the inner surface of interior insulation dielectric layer 4, which is sticked, the first metal layer 3, and floating potential cylinder provides mechanical branch for each metal layer
Support, the inner surface of the first metal layer 3 is attached on floating potential cylinder 2, and the outer surface of interior insulation dielectric layer 4 is sticked second metal layer
5.The inner surface of external insulation dielectric layer 8 is sticked the 3rd metal layer 7 having on the outside of second metal layer, external insulation dielectric layer it is outer
Surface, which is sticked, the 4th metal layer 9, and the 4th metal layer 9 is grounded.Second metal layer includes two inside low-field electrodes, inside low pressure
Electrode is the tile structure being coaxially set with interior insulation dielectric layer, and the 3rd metal layer is included with inside low-field electrode number one by one
Corresponding outside low pressure electrode, outside low pressure electrode are the tile structure being coaxially set with external insulation dielectric layer, and each inside is low
Piezoelectricity pole is respectively with corresponding outside low pressure electrode by 11 short circuit of electric conductor, and gap 12 between adjacent inboard low-field electrode is along interior
Gap 13 between the radial direction of insulating medium layer and adjacent outer low-field electrode is positive corresponding.Second metal layer and the 3rd metal layer it
Between filled with insulating cement 6, insulating cement can play the work insulated from each other of adjacent inboard low-field electrode, adjacent outer low-field electrode
With insulating cement can also play the role of ensureing product integral strength.Each metal layer is copper foil layer in the present embodiment.
It is insulated between Primary Conductor and floating potential cylinder using insulating gas (such as sulfur hexafluoride), shape between the two
Into high-voltage capacitance, Primary Conductor is undertaken to pressure vessel ground potential pressure drop major part.Between the first metal layer, second metal layer
Two-stage capacitance is respectively formed between the 3rd metal layer, the 4th metal layer, two-stage capacitance is combined together by insulating cement.Two-stage
Independent on capacitance structure, processing technology is consistent, and inside and outside insulating medium layer is high tenacity, high insulating property ability.During use
Build-out resistor in parallel between outside low pressure electrode and the 4th metal layer connects voltage acquisition unit by shielded cable, and voltage is adopted
Collection unit is installed in the closing made of metal housing on the outside of pressure vessel, can be to avoid the interference of external electromagnetic field.
As shown in Figure 4：Primary Conductor outer surface is with floating potential cylinder close to Primary Conductor side surface capacitance parameter C1, first
Capacitance parameter C between metal layer 3 and each inside low-field electrode of second metal layer 52a, the 4th metal layer 9 and the 3rd each outside of metal layer
7 capacitance parameter C of low-field electrode2b, can be drawn according to coaxial capacitance calculation formula, details are not described herein again.Build-out resistor RpIt calculates
Formula is as follows：
In formula：N is the number of inside low-field electrode.
According to formula (1), it is known that output valve isBuild-out resistor R can be soughtp。
In other embodiments of the invention：The number of inside low-field electrode can also be one, three or other numbers；
It can also be insulated between second metal layer and the 3rd metal layer by filling insulating gas；Inside low-field electrode, outside low pressure electrode
It can also be the tubular construction being coaxially set with corresponding insulating medium layer, each low-field electrode is axially spaced apart at this time.
Claims (4)
1. a kind of stagewise voltage transformer, including the interior insulation dielectric layer being coaxially set and external insulation dielectric layer, feature
It is：The inner surface of interior insulation dielectric layer, which is sticked, the first metal layer, and the outer surface of interior insulation dielectric layer, which is sticked, the second metal
Layer, the inner surface of external insulation dielectric layer are sticked the 3rd metal layer being located at interval on the outside of second metal layer, external insulation dielectric layer
Outer surface be sticked and have the 4th metal layer, second metal layer includes at least one inside low-field electrode, the 3rd metal layer include with
The one-to-one outside low pressure electrode of inside low-field electrode number, inside low-field electrode and corresponding outside low pressure electrode short circuit, the
Insulating cement or insulating gas are filled in gap between two metal layers and the 3rd metal layer；4th metal layer is grounded.
2. stagewise voltage transformer according to claim 1, it is characterised in that：The inner coaxial line patch of the first metal layer
Equipped with floating potential cylinder, the inner coaxial line of floating potential cylinder is provided with Primary Conductor.
3. stagewise voltage transformer according to claim 1, it is characterised in that：First, second, third and fourth metal
Layer is copper foil layer.
4. the stagewise voltage transformer according to claim 1 ~ 3 any one, it is characterised in that：Inside low-field electrode has
At least two, inside low-field electrode is the tile structure that is coaxially set with interior insulation dielectric layer, outside low pressure electrode be with it is outer
The tile structure that insulating medium layer is coaxially set, each inside low-field electrode being provided at circumferentially spaced along interior insulation dielectric layer, phase
Gap between adjacent inside low-field electrode is along the gap between the radial direction of interior insulation dielectric layer and corresponding adjacent outer low-field electrode
It is positive corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510886208.2A CN105467187B (en) | 2015-12-04 | 2015-12-04 | A kind of stagewise voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510886208.2A CN105467187B (en) | 2015-12-04 | 2015-12-04 | A kind of stagewise voltage transformer |
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| Publication Number | Publication Date |
|---|---|
| CN105467187A CN105467187A (en) | 2016-04-06 |
| CN105467187B true CN105467187B (en) | 2018-05-22 |
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| CN201510886208.2A Expired - Fee Related CN105467187B (en) | 2015-12-04 | 2015-12-04 | A kind of stagewise voltage transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11774481B2 (en) | 2018-12-17 | 2023-10-03 | G & W Electric Company | Electrical sensor assembly |
| US11815529B2 (en) | 2018-03-30 | 2023-11-14 | G & W Electric Company | Constructive system regarding a capacitive sensor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT201600103234A1 (en) | 2016-10-14 | 2018-04-14 | Green Seas Ventures Ldt | Constructive system relating to a capacitive voltage sensor |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4423469A1 (en) * | 1994-07-05 | 1996-01-11 | Elektrische Automatisierungs U | Capacitive displacement measuring system used for non-contact position and vibration measurement at rotors in radial direction |
| CN201134346Y (en) * | 2007-12-29 | 2008-10-15 | 武汉格蓝若光电互感器有限公司 | Novel high-voltage independent electronic voltage mutual inductor |
| CN202384166U (en) * | 2011-11-10 | 2012-08-15 | 许继集团有限公司 | Three-phase common-box GIS electronic-type voltage-current combined mutual inductor |
| 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) |
| 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 |
| CN103760395A (en) * | 2014-01-02 | 2014-04-30 | 国家电网公司 | Multiple-output electronic voltage transformer for GIS |
| CN203772925U (en) * | 2014-01-02 | 2014-08-13 | 国家电网公司 | Multi-output electronic voltage transformer for GIS (geographic information system) |
| CN105467185A (en) * | 2015-12-04 | 2016-04-06 | 国家电网公司 | A capacitance-resistance voltage-dividing type voltage transformer |
| CN205427013U (en) * | 2015-12-04 | 2016-08-03 | 国家电网公司 | Hierarchical formula voltage transformer |
-
2015
- 2015-12-04 CN CN201510886208.2A patent/CN105467187B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4423469A1 (en) * | 1994-07-05 | 1996-01-11 | Elektrische Automatisierungs U | Capacitive displacement measuring system used for non-contact position and vibration measurement at rotors in radial direction |
| CN201134346Y (en) * | 2007-12-29 | 2008-10-15 | 武汉格蓝若光电互感器有限公司 | Novel high-voltage independent electronic voltage mutual inductor |
| CN202384166U (en) * | 2011-11-10 | 2012-08-15 | 许继集团有限公司 | Three-phase common-box GIS electronic-type voltage-current combined mutual inductor |
| 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) |
| 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 |
| CN103760395A (en) * | 2014-01-02 | 2014-04-30 | 国家电网公司 | Multiple-output electronic voltage transformer for GIS |
| CN203772925U (en) * | 2014-01-02 | 2014-08-13 | 国家电网公司 | Multi-output electronic voltage transformer for GIS (geographic information system) |
| CN105467185A (en) * | 2015-12-04 | 2016-04-06 | 国家电网公司 | A capacitance-resistance voltage-dividing type voltage transformer |
| CN205427013U (en) * | 2015-12-04 | 2016-08-03 | 国家电网公司 | Hierarchical formula voltage transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11815529B2 (en) | 2018-03-30 | 2023-11-14 | G & W Electric Company | Constructive system regarding a capacitive sensor |
| US11774481B2 (en) | 2018-12-17 | 2023-10-03 | G & W Electric Company | Electrical sensor assembly |
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| Publication number | Publication date |
|---|---|
| CN105467187A (en) | 2016-04-06 |
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Granted publication date: 20180522 |