CN113470949A - Novel voltage alternating current-direct current Coil Rogowski Coil - Google Patents
Novel voltage alternating current-direct current Coil Rogowski Coil Download PDFInfo
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- CN113470949A CN113470949A CN202110898027.7A CN202110898027A CN113470949A CN 113470949 A CN113470949 A CN 113470949A CN 202110898027 A CN202110898027 A CN 202110898027A CN 113470949 A CN113470949 A CN 113470949A
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- coil
- insulating
- clockwise
- rogowski
- counterclockwise
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- 229910045601 alloy Inorganic materials 0.000 claims abstract description 32
- 239000000956 alloy Substances 0.000 claims abstract description 32
- 239000004568 cement Substances 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 12
- 239000010410 layer Substances 0.000 claims description 27
- 239000003292 glue Substances 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000011241 protective layer Substances 0.000 claims description 8
- 229910000889 permalloy Inorganic materials 0.000 claims description 5
- 229910001297 Zn alloy Inorganic materials 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- WJZHMLNIAZSFDO-UHFFFAOYSA-N manganese zinc Chemical compound [Mn].[Zn] WJZHMLNIAZSFDO-UHFFFAOYSA-N 0.000 claims description 4
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 2
- 230000006698 induction Effects 0.000 abstract description 10
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
- G01R15/181—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using coils without a magnetic core, e.g. Rogowski coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/288—Shielding
- H01F27/2885—Shielding with shields or electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/29—Terminals; Tapping arrangements for signal inductances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
A novel voltage alternating current and direct current Coil Rogowski Coil relates to the technical field of Rogowski coils. It is outer including insulating, the shielding lead wire, the shielding layer, the insulating cement inoxidizing coating, the counterclockwise needle coil, the insulating cement core, the alloy silk, clockwise coil, the alloy silk sets up the inlayer at the counterclockwise needle coil, the skin of counterclockwise needle coil is equipped with counterclockwise needle coil and clockwise coil, and anticlockwise coil and clockwise needle coil laminate to the inboard of insulating cement inoxidizing coating, the outer face and the shielding layer of insulating cement inoxidizing coating laminate each other, the outside of shielding layer is equipped with the shielding lead wire, and the shielding lead wire setting is between insulating skin and shielding layer. The invention has the beneficial effects that: the Rogowski Coil can have the same or smaller volume, and the voltage alternating current and direct current induction accuracy of the Rogowski Coil is smaller and more sensitive, and the output signal is higher.
Description
Technical Field
The invention relates to the technical field of Rogowski coils, in particular to a novel voltage alternating current and direct current Coil Rogowski Coil.
Background
The Rogowski Coil is also called a Rogowski Coil, a Rogowski Coil or an air core Coil, is an alternating current and direct current sensor, is a hollow annular Coil, has two types of flexibility and rigidity, can be directly sleeved on a measured conductor to measure alternating current and direct current of alternating voltage, is suitable for measuring alternating current and direct current of alternating voltage in a wider frequency range, has no special requirements on the conductor and the size, has quicker instant response capability, is widely applied to occasions where a traditional voltage alternating current and direct current measuring device such as a voltage alternating current and direct current transformer cannot be used, is used for measuring alternating current and direct current of voltage, particularly measuring alternating current and direct current of high frequency and large voltage, and can provide convenience for people in daily use, but still has the following defects:
in the prior art, when the Rogowski Coil is used, the volume is relatively large, the change is not good, the voltage alternating current and direct current induction accuracy is higher, the sensitivity is insufficient, the output signal is relatively low, and the use of the Rogowski Coil is influenced.
Disclosure of Invention
The invention aims to provide a novel voltage alternating current-direct current Coil Rogowski Coil aiming at the problems that when the Rogowski Coil is used, the size is relatively large, the Rogowski Coil is not easy to change, the voltage alternating current-direct current induction precision is higher, the sensitivity is relatively insufficient, the output signal is relatively low, and the use of the Rogowski Coil is influenced.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a novel voltage alternating current-direct current Coil Rogowski Coil, it includes insulating outer 1, shielding lead wire 2, shielding layer 3, insulating cement inoxidizing coating 4, counterclockwise Coil 5, insulating cement core 6, alloy silk 7, clockwise time needle Coil 8, alloy silk 7 sets up the inlayer at counterclockwise Coil 5, and counterclockwise Coil 5's skin is equipped with counterclockwise Coil 5 and clockwise time needle Coil 8, and counterclockwise Coil 5 and clockwise Coil 8 laminate to the inboard of insulating cement inoxidizing coating 4, and the outer face of insulating cement inoxidizing coating 4 laminates with shielding layer 3 each other, and the outside of shielding layer 3 is equipped with shielding lead wire 2, and shielding lead wire 2 sets up between insulating outer 1 and shielding layer 3.
Further, the anticlockwise coil 5 and the clockwise coil 8 are arranged on the outer side of the insulating rubber core 6 in an intersecting manner.
Further, the alloy wire 7 is a permalloy wire, and is a cobalt-based, iron-based amorphous, manganese-zinc, nickel-zinc alloy wire of a nanometer level.
Further, the insulating outer layer 1 and the insulating glue protective layer 4 are parallel to each other.
Further, the outer diameter of the alloy wire 7 is smaller than the inner diameter of the insulating rubber core 6, and the alloy wire 7 is matched with the anticlockwise coil 5 and the clockwise coil 8 through the insulating rubber core 6.
Further, the counterclockwise coil 5 and the clockwise coil 8 may be freely disposed.
The working principle of the invention is as follows: by changing the alloy wire 7, wherein the alloy wire 7 should adopt permalloy, and should adopt a cobalt-based, iron-based amorphous, manganese-zinc, nickel-zinc alloy wire of nanometer level, then the alloy wire 7 is wrapped by the insulating glue core 6, the counterclockwise Coil 5 and the clockwise Coil 8 are wound on the insulating glue core 6, the insulating glue protective layer 4 is utilized to perform the protection operation of the counterclockwise needle Coil 5, the insulating glue core 6, the alloy wire 7 and the clockwise needle Coil 8, then the shielding layer 3 is added on the outer layer of the insulating glue protective layer 4, the shielding lead 2 is added on the shielding layer 3, finally, the insulating outer layer 1 is utilized to protect the Rogowski Coil, so that the volume of the Rogowski Coil can be effectively controlled, and the shielding lead 2 and the shielding layer 3 can ensure the output signal of the Rogowski Coil, alloy wire 7 then can guarantee that its voltage alternating current-direct current induction precision is littleer, and more sensitive voltage alternating current-direct current induction precision is littleer, and is more sensitive, and the theoretical foundation that the rogowski coil measured voltage alternating current-direct current is Faraday electromagnetic induction law and ampere loop law, when being surveyed voltage alternating current-direct current and passing through rogowski coil center along the axis, produces the magnetic field of corresponding change in the volume that the loop winding surrounds, and intensity is H, by ampere loop law get: phi H · dl = i (t) is represented by B = μ H, e (t) = d Φ/dt, phi = N ═ B · dS, e (t) = M · di/dt: when the cross section is rectangular, the mutual inductance M and the self-inductance L are respectively as follows: m = μ 0Nhln (b/a)/2 π, L = μ 0N ^2hln (b/a)/2 π. In the above formula, H is the magnetic field strength inside the coil, B is the magnetic induction inside the coil, μ 0 is the vacuum permeability, N is the number of turns of the coil, e (t) is the induced voltage at both ends of the coil, a, B are the inner and outer diameters of the cross section of the coil, and H is the height of the cross section. It can be seen that, when the coil is constant, M is constant, and the output voltage of the coil is proportional to di/dt. That is, the output voltage of the rogowski coil is proportional to the differential of the alternating current and direct current of the measured voltage, the output voltage proportional to the alternating current and direct current of the primary voltage can be obtained by only passing the output of the rogowski coil through an integrator, and the counterclockwise coil 5 and the clockwise coil 8 can be freely arranged.
After the technical scheme is adopted, the invention has the beneficial effects that: the Rogowski Coil can have the same or smaller volume, and the voltage alternating current and direct current induction accuracy of the Rogowski Coil is smaller and more sensitive, and the output signal is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic sectional structure view corresponding to fig. 1.
Description of reference numerals: the insulation outer layer 1, the shielding lead 2, the shielding layer 3, the insulation rubber protective layer 4, the counterclockwise coil 5, the insulation rubber core 6, the alloy wire 7 and the clockwise coil 8.
Detailed Description
The first embodiment is as follows: referring to fig. 1 to 2, the technical solution adopted by the present embodiment is: it includes insulating outer 1, shielding lead wire 2, shielding layer 3, insulating cement inoxidizing coating 4, counterclockwise needle coil 5, insulating cement core 6, alloy silk 7, clockwise needle coil 8, alloy silk 7 sets up the inlayer at counterclockwise needle coil 5, and counterclockwise needle coil 5's skin is equipped with counterclockwise needle coil 5 and clockwise needle coil 8, and anticlockwise coil 5 and clockwise coil 8 laminate to the inboard of insulating cement inoxidizing coating 4, and the outer face and the shielding layer 3 of insulating cement inoxidizing coating 4 laminate each other, and the outside of shielding layer 3 is equipped with shielding lead wire 2, and shielding lead wire 2 sets up between insulating outer 1 and shielding layer 3.
The anti-clockwise coil 5 and the clockwise coil 8 are arranged on the outer side of the insulating rubber core 6 in a mutually crossed mode, the alloy wire 7 is a permalloy wire, the insulating outer layer 1 is parallel to the insulating rubber protective layer 4, the outer diameter of the alloy wire 7 is smaller than the inner diameter of the insulating rubber core 6, the alloy wire 7 is matched with the anti-clockwise coil 5 and the clockwise coil 8 through the insulating rubber core 6, and the counterclockwise coil 5 and the clockwise coil 8 can be freely arranged.
The working principle of the invention is as follows: by changing the alloy wire 7, wherein the alloy wire 7 should adopt permalloy, and should adopt a cobalt-based, iron-based amorphous, manganese-zinc, nickel-zinc alloy wire of nanometer level, then the alloy wire 7 is wrapped by the insulating glue core 6, the counterclockwise Coil 5 and the clockwise Coil 8 are wound on the insulating glue core 6, the insulating glue protective layer 4 is utilized to perform the protection operation of the counterclockwise needle Coil 5, the insulating glue core 6, the alloy wire 7 and the clockwise needle Coil 8, then the shielding layer 3 is added on the outer layer of the insulating glue protective layer 4, the shielding lead 2 is added on the shielding layer 3, finally, the insulating outer layer 1 is utilized to protect the Rogowski Coil, so that the volume of the Rogowski Coil can be effectively controlled, and the shielding lead 2 and the shielding layer 3 can ensure the output signal of the Rogowski Coil, alloy wire 7 then can guarantee that its voltage alternating current-direct current induction precision is littleer, and more sensitive voltage alternating current-direct current induction precision is littleer, and is more sensitive, and the theoretical foundation that the rogowski coil measured voltage alternating current-direct current is Faraday electromagnetic induction law and ampere loop law, when being surveyed voltage alternating current-direct current and passing through rogowski coil center along the axis, produces the magnetic field of corresponding change in the volume that the loop winding surrounds, and intensity is H, by ampere loop law get: phi H · dl = i (t) is represented by B = μ H, e (t) = d Φ/dt, phi = N ═ B · dS, e (t) = M · di/dt: when the cross section is rectangular, the mutual inductance M and the self-inductance L are respectively as follows: m = μ 0Nhln (b/a)/2 π, L = μ 0N ^2hln (b/a)/2 π. In the above formula, H is the magnetic field strength inside the coil, B is the magnetic induction inside the coil, μ 0 is the vacuum permeability, N is the number of turns of the coil, e (t) is the induced voltage at both ends of the coil, a, B are the inner and outer diameters of the cross section of the coil, and H is the height of the cross section. It can be seen that, when the coil is constant, M is constant, and the output voltage of the coil is proportional to di/dt. That is, the output voltage of the rogowski coil is proportional to the differential of the alternating current and direct current of the measured voltage, the output voltage proportional to the alternating current and direct current of the primary voltage can be obtained by only passing the output of the rogowski coil through an integrator, and the anticlockwise coil 5 and the clockwise coil 8 can be freely arranged.
Example two: the alloy wire 7 can be replaced by alloy polymer according to actual manufacturing requirements.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. A novel voltage alternating current-direct current Coil Rogowski Coil is characterized in that: it includes insulating skin (1), shielding lead (2), shielding layer (3), insulating cement inoxidizing coating (4), anticlockwise coil (5), insulating cement core (6), alloy silk (7), clockwise needle coil (8), alloy silk (7) set up the inlayer in counterclockwise needle coil (5), and the skin of counterclockwise needle coil (5) is equipped with counterclockwise needle coil (5) and clockwise needle coil (8), and counterclockwise needle coil (5) and clockwise coil (8) laminate to the inboard of insulating cement inoxidizing coating (4), and the outer face and the shielding layer (3) of insulating cement inoxidizing coating (4) laminate each other, and the outside of shielding layer (3) is equipped with shielding lead (2), and shielding lead (2) set up between insulating skin (1) and shielding layer (3).
2. A new type of Rogowski Coil, according to claim 1, wherein: the counterclockwise coil (5) and the clockwise coil (8) are arranged on the outer side of the insulating rubber core (6) in a mutually crossed manner.
3. A new type of Rogowski Coil, according to claim 1, wherein: the alloy wire (7) is a permalloy wire and is a nano-scale cobalt-based, iron-based amorphous, manganese-zinc and nickel-zinc alloy wire.
4. A new type of Rogowski Coil, according to claim 1, wherein: the insulating outer layer (1) and the insulating glue protective layer (4) are parallel to each other.
5. A new type of Rogowski Coil, according to claim 1, wherein: the outer diameter of the alloy wire (7) is smaller than the inner diameter of the insulating rubber core (6), and the alloy wire (7) is matched with the counterclockwise coil (5) and the clockwise coil (8) through the insulating rubber core (6).
6. A new type of Rogowski Coil, according to claim 1, wherein: the counterclockwise coil (5) and the clockwise coil (8) can be freely arranged.
7. A new type of Rogowski Coil, according to claim 1, wherein: the alloy wire 7 may be replaced by an alloy polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110898027.7A CN113470949A (en) | 2021-08-05 | 2021-08-05 | Novel voltage alternating current-direct current Coil Rogowski Coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110898027.7A CN113470949A (en) | 2021-08-05 | 2021-08-05 | Novel voltage alternating current-direct current Coil Rogowski Coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113470949A true CN113470949A (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110898027.7A Pending CN113470949A (en) | 2021-08-05 | 2021-08-05 | Novel voltage alternating current-direct current Coil Rogowski Coil |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH095361A (en) * | 1995-06-23 | 1997-01-10 | Sumitomo Special Metals Co Ltd | Dc current sensor |
| US6313623B1 (en) * | 2000-02-03 | 2001-11-06 | Mcgraw-Edison Company | High precision rogowski coil |
| US20080007249A1 (en) * | 2006-07-06 | 2008-01-10 | Wilkerson Donovan E | Precision, temperature-compensated, shielded current measurement device |
| JP2011022101A (en) * | 2009-07-21 | 2011-02-03 | Hioki Ee Corp | Current sensor and method for manufacturing current sensor |
| CN102364639A (en) * | 2011-10-18 | 2012-02-29 | 李云宏 | Plastic Rogowski coil mutual inductor and measuring method thereof |
| US20160327592A1 (en) * | 2014-01-07 | 2016-11-10 | Power Electronic Measurements Ltd | High bandwidth rogowski transducer with screened coil |
| US20190311835A1 (en) * | 2018-04-06 | 2019-10-10 | Eaton Intelligent Power Limited | Rogowski coil with low permeability core |
| CN111630615A (en) * | 2018-01-05 | 2020-09-04 | 溯高美公司 | Open-close type current transformer comprising flexible magnetic core |
| CN215896145U (en) * | 2021-08-05 | 2022-02-22 | 兰慧云 | Novel voltage AC/DC Rogowski coil |
-
2021
- 2021-08-05 CN CN202110898027.7A patent/CN113470949A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH095361A (en) * | 1995-06-23 | 1997-01-10 | Sumitomo Special Metals Co Ltd | Dc current sensor |
| US6313623B1 (en) * | 2000-02-03 | 2001-11-06 | Mcgraw-Edison Company | High precision rogowski coil |
| US20080007249A1 (en) * | 2006-07-06 | 2008-01-10 | Wilkerson Donovan E | Precision, temperature-compensated, shielded current measurement device |
| JP2011022101A (en) * | 2009-07-21 | 2011-02-03 | Hioki Ee Corp | Current sensor and method for manufacturing current sensor |
| CN102364639A (en) * | 2011-10-18 | 2012-02-29 | 李云宏 | Plastic Rogowski coil mutual inductor and measuring method thereof |
| US20160327592A1 (en) * | 2014-01-07 | 2016-11-10 | Power Electronic Measurements Ltd | High bandwidth rogowski transducer with screened coil |
| CN111630615A (en) * | 2018-01-05 | 2020-09-04 | 溯高美公司 | Open-close type current transformer comprising flexible magnetic core |
| US20190311835A1 (en) * | 2018-04-06 | 2019-10-10 | Eaton Intelligent Power Limited | Rogowski coil with low permeability core |
| CN215896145U (en) * | 2021-08-05 | 2022-02-22 | 兰慧云 | Novel voltage AC/DC Rogowski coil |
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