CN106370894A - Open type Rogowski wire coil and application thereof - Google Patents
Open type Rogowski wire coil and application thereof Download PDFInfo
- Publication number
- CN106370894A CN106370894A CN201611003916.8A CN201611003916A CN106370894A CN 106370894 A CN106370894 A CN 106370894A CN 201611003916 A CN201611003916 A CN 201611003916A CN 106370894 A CN106370894 A CN 106370894A
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- China
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- layer
- open type
- coil
- type rogowski
- rogowski coil
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/18—Screening arrangements against electric or magnetic fields, e.g. against earth's field
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
- Transformers For Measuring Instruments (AREA)
Abstract
The invention relates to an open type Rogowski wire coil and application thereof. The open type Rogowski wire coil comprises double layers of PCB boards, each PCB board is formed by a pair of semicircle annular plates that are arranged opposite to each other, a gap is arranged between the semicircle annular plates that are arranged opposite to each other, and an interval insulating layer is arranged at the middle of each PCB board; two sides of the interval insulating layer are orderly and symmetrically provided with electric conduction layers, interval insulating layers and shielding layers from inside to outside; wire coils are laid on the electric conduction layers; the two shielding layers are electrically connected via through holes that are arranged close to an external diameter of the Rogowski wire coil and used for connecting two shielding layers, and therefore a Faraday cage shielding cover structure is formed. The Rogowski wire coil disclosed in the invention is good in anti-electromagnetic interference performance, no extra shielding structure is needed because the shielding layers and the wire coils are arranged on the PCB boards, a whole structure can be downsized, simple production can be realized, and high consistency can be achieved.
Description
Technical field
The invention belongs to current measurement techniques field, and in particular to a kind of open type Rogowski coil, can be used for distribution wire
Road fault locator.
Background technology
Luo-coil has measurement range width, and the linearity is good, and structure is simple, the features such as risk of no opening a way, is suitable for electric power
The current parameters measurement of circuit.Generally can be divided into open type and closed two kinds of structures, the Luo-coil of open type is installed, safeguarded
More convenient, it is suitable for applying occasion not easy-to-dismount in energized conductor.
How wire is uniformly wound on the skeleton that nonmagnetic flexible material is constituted by traditional open type Rogowski coil,
Outside is further added by shielding construction.But its certainty of measurement is affected by framework material and wire coiling.It is difficult to meet high-acruracy survey
Require, simultaneously need to outside extra shielding construction, its volume is larger to bring certain difficulty so as to install.
Content of the invention
It is an object of the invention to provide a kind of pcb Luo-coil of the high-precision open formula for strong antijamming capability,
To overcome above-mentioned difficulties.
The technical scheme is that a kind of open type Rogowski coil, including double-deck pcb plate, every layer of pcb plate is by a pair of phase
The semi-circular shape plate of setting is constituted, between two being oppositely arranged block semi-circular shape plate, is provided with gap, be one in the middle of described pcb plate
Spacer insulator layer, this spacer insulator layer both sides is symmetrical arranged conductive layer, spacer insulator layer and screen layer, coil from inside to outside successively
It is laid in described conductive layer, two screen layers are carried out by the through hole of connection two screen layer being positioned close to Luo-coil outer radius
Electrical connection, forms Faraday cage shield cover structure.
In a detailed embodiment, the one end open of a pair of semi-circular shape plate is normally opened opening, sets at normally opened opening
There is signal exit, the coil at a pair of semi-circular shape plate other end passes through shielding connecting line and is connected, and shielding connecting line will simultaneously
The screen layer of a pair of semi-circular shape plate is connected.
In a detailed embodiment, the coil of two-layer pcb plate is connected by wire.
In a detailed embodiment, pcb plate outermost layer is conductive layer, and this conductive layer is laid with shielding Copper Foil and constitutes institute
State screen layer.
In a detailed embodiment, described through hole hole wall is coated with metal level.
In a detailed embodiment, described through hole is uniformly distributed along the circumference.
In a detailed embodiment, described coil includes the wire in two Conductive Layer Etch, and the wire of two-layer passes through
Turn on the buried via hole in two conductive layers and form connection, buried via hole hole wall is coated with metal level.
In a detailed embodiment, the wire coiling of two-layer is in opposite direction.
In a detailed embodiment, described through hole is disposed on adjacent buried via hole gap location.
The present invention also provides a kind of application in the fault locator of distribution line for described open type Rogowski coil.
Due to being used pcb sheet material as the base material of Luo-coil, pcb material has the good spy of temperature stability to the present invention
It is not easy to deformation, simultaneously by the way of digital control processing, coil is etched on Copper Foil point, and uniformly, parameter is consistent for its coil arrangement
Property is good, and the Luo-coil of the present invention is superior to traditional Luo-coil in terms of precision, concordance, stability.
By being arranged in two coils of polylith pcb plate second and the 3rd conductive layer, it is cascaded structure, can increase hollow
The induction of signal intensity of coil, improves the sensitivity of Luo-coil.Meanwhile, two coils due to the direction of winding of coil contrary,
The impact to single coil for the magnetic field in vertical direction is cancelled out each other, and therefore can eliminate the magnetic interference of vertical direction.
By being arranged in the shielding Copper Foil of pcb plate first and the 4th conductive layer, two-layer Copper Foil passes through Luo-coil outer ring
Conductive through hole is connected, and forms the shielding case structure of faraday electricity cage, by be laid in second and the 3rd conductive layer coil
In being wrapped in, because Copper Foil and through hole are conductor, extraneous electromagnetic interference is all shielded, and is unlikely to affect Inside coil, from
And make Luo-coil obtain the performance of good electromagnetism interference.
And due to being together arranged in screen layer and coil on pcb plate, extra shielding construction need not be further added by, make entirety
Structure reduces, and manufactures simple, concordance is good.
Brief description
Fig. 1 is the overall structure diagram of a specific embodiment of Luo-coil of the present invention.
Fig. 2 is the pcb plate cross-sectional view of Luo-coil.
Fig. 3 is Luo-coil connection diagram.
Wherein, the Luo-coil first half 1, Luo-coil lower half 2, top layer first half pcb plate 11, bottom first half pcb
Plate 12, top layer lower half pcb plate 21, bottom lower half pcb plate 22, shielding connecting line 3, signal exit 4；
Luo-coil internal diameter r1, Luo-coil external diameter r2, through hole 5, the first conductive layer 61, the second conductive layer 62, the 3rd conductive layer
63rd, the 4th conductive layer 64, the first spacer insulator layer 71, the second spacer insulator layer 72, the 3rd spacer insulator layer 73, shielding Copper Foil 8,
Coil 9, buried via hole 10；
First half pcb plate top layer coil head end 121, first half pcb plate top layer coil tail end 122, lower half pcb plate top layer coil
Head end 123, lower half pcb plate top layer coil tail end 124, first half pcb plate bottom coil head end 125, first half pcb plate bottom
Coil tail end 126, lower half pcb plate bottom coil head end 127, lower half pcb plate bottom coil tail end 128；
Top layer coil the second conductive layer cabling 131, top layer coil the 3rd conductive layer cabling 132, bottom coil second conductive layer are walked
Line 133, bottom coil the 3rd conductive layer cabling 134.
Specific embodiment
The word that " upper and lower, top, bottom " of the present invention etc. is related to orientation be only with reference to the accompanying drawings in orientation, retouch for convenience
The relative property description stated and adopt, coil putting position this descriptive words of difference should adjust accordingly.
As Fig. 1 ~ 3, the open type Rogowski of the fault locator for distribution line of one specific embodiment of the present invention
Coil, including the Luo-coil first half 1, Luo-coil lower half 2, and shielding connecting line 3 and signal exit 4.Roche line
The circle first half 1 and Luo-coil lower half 2 are a pair of semi-circular shape bilayer pcb plate, and the two is in be oppositely arranged (specular), it
Between have certain interval constitute opening, one end be normally opened opening, signal exit 4 is by this normally opened opening of Luo-coil lower half 2
Draw, pass through shielding connecting line 3 at another end opening and be connected.
Top layer pcb plate is identical with the hardened structure of bottom pcb, is stacked, in specular.That is, the Roche of this embodiment
Coil includes four blocks of semi-circular shape pcb plates.Fig. 2 is the sectional view of one of semi-circular shape pcb plate.
The Luo-coil first half 1 is by the top layer first half pcb plate 11 with screen layer with by the bottom with screen layer
Half portion pcb plate 12 stacking composition.The top layer coil tail end 122 of first half pcb plate and the bottom coil head end of first half pcb plate
125 are connected.
Luo-coil lower half 2 is by the top layer lower half pcb plate 21 with screen layer with by under the bottom with screen layer
Half portion pcb plate 22 stacking composition.The top layer coil head end 123 of lower half pcb plate and the bottom coil tail end of lower half pcb plate
128 each outfans connecting a signal exit 4, constituting Luo-coil sampled signal.
Shielding connecting line 3 is respectively by the pcb plate top layer coil of the top layer coil head end 121 of first half pcb plate and lower half
Tail end 124 be connected, by the head end 127 of the bottom coil tail end 126 of first half pcb plate and the pcb plate bottom coil of lower half
It is connected, institute's Luo-coil first half screen layer is connected with the screen layer of lower half.
Constitute the pcb plate (top/bottom, the first half/lower half) of Luo-coil by four layers of conductive layer and three interlayers every
Insulating barrier forms.
First conductive layer 61 and the 4th conductive layer 64 are arranged with screen layer.In a specific embodiment, first is conductive
Layer 61 and the 4th conductive layer 64 are laid with large area Copper Foil (shielding Copper Foil 8) and constitute screen layer, to shield external interference signal.Screen
Cover layer to be plated by the through hole 5(hole wall of connection the first conductive layer 61 being positioned close to Luo-coil outer radius and the 4th conductive layer 64
Copper) it is electrically connected.Through hole 5, along Luo-coil circumference uniform distribution, is disposed on the gap location of adjacent buried via hole 10, good to produce
Good shield effectiveness.
Second conductive layer 62 and the 3rd conductive layer 63 are laid with coil 9(by way of etching Copper Foil cabling, circumferentially side
To uniform), and by turning on each section of Copper Foil being located on conductive layer in the buried via hole 10(of the second conductive layer 62 and the 3rd conductive layer 63
The two ends of cabling, hole wall copper facing) form connection.Coil 9 by the Copper Foil cabling of the second conductive layer 62 and the 3rd conductive layer 63 and buries
Hole 10 collectively forms.It is laid in pcb plate the second conductive layer 62 and the top layer coil of the 3rd conductive layer 63 and the coiling of bottom coil
(as shown in Figure 3) in opposite direction.
The open type Rogowski coil of the present invention is detected through coil by the top layer coil of the pcb plate that is laid in and bottom coil
The current signal that the conductor at center flows through, is generated a weak voltage signal being proportional to primary current, is drawn by signal exit
Go out.
Claims (10)
1. a kind of open type Rogowski coil, including double-deck pcb plate, every layer of pcb plate is by the semi-circular shape plate structure of a pair of opposing
Become, be provided with gap between two being oppositely arranged block semi-circular shape plate it is characterised in that: be a spacer insulator in the middle of described pcb plate
Layer, this spacer insulator layer both sides is symmetrical arranged conductive layer, spacer insulator layer and screen layer from inside to outside successively, and coil is laid in institute
State conductive layer, two screen layers are electrically connected by the through hole of connection two screen layer being positioned close to Luo-coil outer radius
Connect, form Faraday cage shield cover structure.
2. open type Rogowski coil according to claim 1 it is characterised in that: the one end open of a pair of semi-circular shape plate is
Normally opened opening, is provided with signal exit at normally opened opening, the coil at a pair of semi-circular shape plate other end passes through to shield connecting line
It is connected, the screen layer of a pair of semi-circular shape plate is connected by shielding connecting line simultaneously.
3. open type Rogowski coil according to claim 1 and 2 it is characterised in that: the coil of two-layer pcb plate pass through wire
Connect.
4. open type Rogowski coil according to claim 1 it is characterised in that: pcb plate outermost layer be conductive layer, this conduction
Layer is laid with shielding Copper Foil and constitutes described screen layer.
5. the open type Rogowski coil according to claim 1 or 4 it is characterised in that: described through hole hole wall is coated with metal level.
6. the open type Rogowski coil according to claim 1 or 4 it is characterised in that: described through hole is uniformly distributed along the circumference.
7. the open type Rogowski coil according to claim 1 or 4 it is characterised in that: described coil is included in two conductive layers
The wire of etching, the buried via hole that the wire of two-layer passes through to turn in two conductive layers forms connection, and buried via hole hole wall is coated with metal level.
8. open type Rogowski coil according to claim 5 it is characterised in that: the wire coiling of two-layer is in opposite direction.
9. open type Rogowski coil according to claim 5 it is characterised in that: described through hole is disposed on adjacent buried via hole
Gap location.
10. application in the fault locator of distribution line for the described open type Rogowski coil of one of a kind of claim 1 ~ 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003916.8A CN106370894A (en) | 2016-11-15 | 2016-11-15 | Open type Rogowski wire coil and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611003916.8A CN106370894A (en) | 2016-11-15 | 2016-11-15 | Open type Rogowski wire coil and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106370894A true CN106370894A (en) | 2017-02-01 |
Family
ID=57894472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611003916.8A Pending CN106370894A (en) | 2016-11-15 | 2016-11-15 | Open type Rogowski wire coil and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106370894A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710062A (en) * | 2018-06-27 | 2018-10-26 | 中科（深圳）能源物联网有限公司 | A kind of wireless monitoring device of cable |
| CN112684243A (en) * | 2020-11-10 | 2021-04-20 | 国网宁夏电力有限公司 | Online monitoring equipment and system for state of lightning arrester |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201465698U (en) * | 2009-08-14 | 2010-05-12 | 河南电力试验研究院 | High-precision open type Rogowski coil |
| CN201556524U (en) * | 2009-12-04 | 2010-08-18 | 深圳市创银实业有限公司 | Electronic type current transformer with PCB Rockwell coil |
| CN202749218U (en) * | 2012-09-24 | 2013-02-20 | 哈尔滨理工大学 | Current transformer based on PCB (printed circuit board)-type Rogowski coil |
| CN102944716A (en) * | 2012-11-13 | 2013-02-27 | 重庆大学 | Lightning flow sensor of Rogowski coil based on printed circuit board |
| CN204101616U (en) * | 2014-08-27 | 2015-01-14 | 重庆大学 | Open type semi-circular anti-interference current sensor |
| CN206161700U (en) * | 2016-11-15 | 2017-05-10 | 威胜电气有限公司 | Open type luo shi coil |
-
2016
- 2016-11-15 CN CN201611003916.8A patent/CN106370894A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201465698U (en) * | 2009-08-14 | 2010-05-12 | 河南电力试验研究院 | High-precision open type Rogowski coil |
| CN201556524U (en) * | 2009-12-04 | 2010-08-18 | 深圳市创银实业有限公司 | Electronic type current transformer with PCB Rockwell coil |
| CN202749218U (en) * | 2012-09-24 | 2013-02-20 | 哈尔滨理工大学 | Current transformer based on PCB (printed circuit board)-type Rogowski coil |
| CN102944716A (en) * | 2012-11-13 | 2013-02-27 | 重庆大学 | Lightning flow sensor of Rogowski coil based on printed circuit board |
| CN204101616U (en) * | 2014-08-27 | 2015-01-14 | 重庆大学 | Open type semi-circular anti-interference current sensor |
| CN206161700U (en) * | 2016-11-15 | 2017-05-10 | 威胜电气有限公司 | Open type luo shi coil |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710062A (en) * | 2018-06-27 | 2018-10-26 | 中科（深圳）能源物联网有限公司 | A kind of wireless monitoring device of cable |
| CN112684243A (en) * | 2020-11-10 | 2021-04-20 | 国网宁夏电力有限公司 | Online monitoring equipment and system for state of lightning arrester |
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