CN106249116A - High Frequency Current Sensor - Google Patents
High Frequency Current Sensor Download PDFInfo
- Publication number
- CN106249116A CN106249116A CN201610797832.XA CN201610797832A CN106249116A CN 106249116 A CN106249116 A CN 106249116A CN 201610797832 A CN201610797832 A CN 201610797832A CN 106249116 A CN106249116 A CN 106249116A
- Authority
- CN
- China
- Prior art keywords
- magnetic core
- high frequency
- groove
- current sensor
- frequency current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 150000002739 metals Chemical class 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 16
- 230000003321 amplification Effects 0.000 abstract description 10
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 10
- 239000011162 core material Substances 0.000 description 67
- 238000001514 detection method Methods 0.000 description 17
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
-
- 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
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- 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
- G01R1/16—Magnets
-
- 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
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/14—Circuits therefor, e.g. for generating test voltages, sensing circuits
Abstract
The invention discloses a kind of High Frequency Current Sensor, including two split type Metal shielding shell, the inwall of described Metal shielding shell offers groove, and described groove has been embedded in half ring type magnetic core, described groove offers for by the ring-like gap of magnetic force；Leaving space between described half ring type magnetic core and groove, described space is filled with insulant, two and half ring type magnetic core composition ring type magnetic cores when the two ends of two Metal shielding shell connect respectively, in described Metal shielding shell；It is wound with two sections of coils on one of them half ring type magnetic core, and the winding direction of described two sections of coils is contrary.The present invention is by the principle of differential amplification, it is incorporated in High Frequency Current Sensor, make full use of difference channel and effectively eliminate interference and the feature of twice amplification primary signal, be effectively improved the capacity of resisting disturbance of High Frequency Current Sensor, and greatly improve the sensitivity of sensor.
Description
Technical field
The present invention relates to Partial Discharge Detecting Technology field, particularly one for cable and partial discharge of transformer test
High Frequency Current Sensor.
Background technology
Partial Discharge Detection is that the high voltage electric equipments such as inspection high-voltage switch gear GIS, transformator, electromotor, power cable are exhausted
The important tests of edge state.In prior art, except supercritical ultrasonics technology and hyperfrequency method can be used directly to high voltage electric equipment
Shelf depreciation measure outside, it is also possible to by detection high voltage electric equipment earth lead high-frequency current signal detect in it
The shelf depreciation situation in portion.High frequency electric method is possible not only to the cable local discharge realizing causing the insulation defect that some are small
Microsignal detection, and can be with the state of insulation of the apparatus insulated media such as on-line monitoring cable, transformator and generating set.Make
For detecting and judge the effective ways of partial discharges fault, high frequency electric method is put in the office of electromotor, transformator and high tension cable
Site Detection and on-line monitoring are widely used.
High Frequency Current Sensor (HFCT), as the sensor element of high frequency electric detection method detection shelf depreciation, typically makes
Using Rogowski coil mode, around multiturn conductive coil on ring-type core material, high frequency electric draws through core center
The high-frequency alternating magnetic field risen can produce faradic current in coil.The bandwidth of High Frequency Current Sensor and sensitivity are to weigh
Most important two parameters of sensor performance.Additionally, sensor scene capacity of resisting disturbance is also the weight weighing sensor performance
Want index.But, there is bandwidth in existing High Frequency Current Sensor and sensitivity is not enough or highly sensitive and frequency in design
The defect that band is narrower, or owing to there is electromagnetic shielding defect in design, cause and yet suffer from certain problem in actual applications.
Summary of the invention
In view of this, it is an object of the invention to propose a kind of High Frequency Current Sensor, to improve capacity of resisting disturbance, simultaneously
There is the advantage that detection sensitivity is high.
Based on above-mentioned purpose, the High Frequency Current Sensor that the present invention provides includes two split type Metal shielding shell,
The inwall of described Metal shielding shell offers groove, and described groove has been embedded in half ring type magnetic core, and described groove offers
For by the ring-like gap of magnetic force；Leaving space between described half ring type magnetic core and groove, described space is filled with insulation material
Material, two and half ring type magnetic core compositions when the two ends of two Metal shielding shell connect respectively, in described Metal shielding shell
Ring type magnetic core；It is wound with two sections of coils on one of them half ring type magnetic core, and the winding direction of described two sections of coils is contrary.
In some embodiments of the invention, described two sections of coils are wound around with the centrage of half ring type magnetic core for axial symmetry.
In some embodiments of the invention, the length of described two sections of coils, diameter, material and the homogeneous cause of the winding number of turn.
In some embodiments of the invention, described Metal shielding shell includes magnetic core groove and the cover plate of arc, described magnetic
Being fixedly connected with cover plate on one sidewall of core groove, described cover plate and the inwall of magnetic core groove composition are for embedding the recessed of half ring type magnetic core
Groove.
In some embodiments of the invention, described cover plate is L font, between another sidewall and cover plate of described magnetic core groove
Leave ring-like gap.
In some embodiments of the invention, one end of described magnetic core groove lateral wall is hinged by hinge, and the other end passes through
Hasp is hinged, and one end of said two magnetic core groove rotates around hinge, and described hasp is for beating the other end of two magnetic core grooves
Open the latter to close.
In some embodiments of the invention, an end face of described magnetic core groove is provided with hole, location, another end face
On be provided with locating piece, when two magnetic core grooves mutually close, the locating piece on one of them magnetic core groove inserts another magnetic core
In the hole, location of groove.
In some embodiments of the invention, one end of described two sections of coils is all with the earth lead of signal output plug even
Connecing, the other end is connected with two signal core of signal output plug respectively.
In some embodiments of the invention, the winding number of turn of every section of coil is 1 circle, and described coil is copper sheet, described line
The cross-sectional area of circle is 4-10mm2；
The width in described ring-like gap is 2-10mm, and the internal diameter of described ring type magnetic core is 40-55mm, and external diameter is 55-75m,
It is highly 20-40mm.
In some embodiments of the invention, described insulant is polystyrene.
From the above it can be seen that the present invention is creatively by the principle of differential amplification, it is incorporated into high frequency electric sensing
In device, make full use of difference channel and effectively eliminate interference and the feature of twice amplification primary signal, be effectively improved high-frequency electrical
The capacity of resisting disturbance of flow sensor, and greatly improve the sensitivity of sensor.These all make the high frequency electric that the present invention provides
Sensor can more preferably be applicable to the test environment of complexity, is effectively improved its Detection results and practicality.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention High Frequency Current Sensor；
Fig. 2 be embodiment of the present invention High Frequency Current Sensor partly cut open left view；
Fig. 3 is that the coil of embodiment of the present invention High Frequency Current Sensor is wound around schematic diagram；
Fig. 4 is the equivalent circuit of embodiment of the present invention High Frequency Current Sensor；
Fig. 5 is that the circuit of High Frequency Current Sensor sensitivity test of the present invention connects.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
It should be noted that the statement of all uses " first " and " second " is for distinguishing two in inventive embodiments
The entity of same names non-equal or the parameter of non-equal, it is seen that " first " " second ", only for the convenience of statement, should not manage
Solving is the restriction to inventive embodiments, and this is illustrated by subsequent embodiment the most one by one.
See Fig. 1 and Fig. 2, respectively the structural representation of embodiment of the present invention High Frequency Current Sensor and partly cut open left view
Figure.As one embodiment of the present of invention, described High Frequency Current Sensor includes two split type Metal shielding shell 1, institute
The inwall stating Metal shielding shell 1 offers groove, and described groove has been embedded in half ring type magnetic core 4, and described groove offers
For by the ring-like gap 9 of magnetic force；Leaving space between described half ring type magnetic core 4 and groove, described space is filled with insulation
Material 11, two and half ring-like magnetic when the two ends of two Metal shielding shell 1 connect respectively, in described Metal shielding shell 1
Core 4 forms a ring type magnetic core.Alternatively, described insulant 11 can be waterproof silicone rubber.One as the present invention excellent
Selecting embodiment, the width in described ring-like gap 9 is 2-10mm, passes through for magnetic force, can be well outside shield sensor
Various interference signals.
As another embodiment of the present invention, as in figure 2 it is shown, described Metal shielding shell 1 includes the magnetic core groove 2 of arc
With cover plate 3, a sidewall of described magnetic core groove 2 being fixedly connected with cover plate 3, described cover plate 3 is used for the inwall composition of magnetic core groove 2
Embed the groove of half ring type magnetic core 4.Preferably, described cover plate 3 is L font, another sidewall of described magnetic core groove 2 and cover plate 3 it
Between leave ring-like gap 9, be used for passing through magnetic force.Preferably, described groove is half ring-like, to coincide with described half ring type magnetic core 4.
Alternatively, the cross section of described groove can be square or rectangle.It should be noted that in this embodiment, described
The inner side of magnetic core groove 2 is semicircle, so that the groove formed is half ring-like, the outside of described magnetic core groove 2 can be other shapes.
Alternatively, described magnetic core groove 2 and cover plate 3 offer several installation screw hole 10, can be by installing screw by magnetic core groove 2
Sidewall and the fixing connection of cover plate 3.
As a preferred embodiment of the present invention, articulated section is passed through at the two ends of said two Metal shielding shell 1 respectively
Part is mutually hinged, to facilitate, two Metal shielding shell 1 is taken apart or is closed.Preferably, as it is shown in figure 1, described magnetic core groove 2
One end of lateral wall is hinged by hinge 6, and the other end is hinged by hasp 7, and therefore, one end of said two magnetic core groove 2 is permissible
Rotating around hinge 6, described hasp 7 closes for the other end of two magnetic core grooves 2 is opened the latter.
It is provided with hole 12, location on one end face of described magnetic core groove 2, another end face is provided with locating piece 13, described
Hole 13, location is inserted into positioning in hole, when two magnetic core grooves 2 mutually close, and the locating piece 13 on one of them magnetic core groove 2
Insert in the hole, location 12 of another magnetic core groove 2, in order to the installation location of two magnetic core grooves 2.
As yet another embodiment of the present invention, one and half ring type magnetic cores 4 are wound with two sections of coils 14, such as Fig. 3 institute
Showing, the winding direction of described two sections of coils 14 is contrary.Wherein, one end of described two sections of coils all with the connecing of signal output plug 15
Ground wire connects, and the other end is connected with two signal core of signal output plug 15 respectively.It is preferred that described signal output plug 15
Can be twin-core differential signal output plug, one end of described coil 14 all earth leads with described twin-core plug be connected, another
End is connected with two signal core respectively.Preferably, the winding number of turn of described two sections of coils 14 is identical, oppositely wound one wherein
On half ring type magnetic core 4.It is further preferable that described two sections of coils 14 are wound around with the centrage of half ring type magnetic core 4 for axial symmetry, i.e. institute
State two sections of coils 14 centrage with half ring type magnetic core 4 for reverse-winding axisymmetrically.Alternatively, the wound convolution of described coil 14
Number can be 1 circle, 2 circles, 3 circles, etc..It is preferred that equal for ensureing the differential signal amplitude of output, described two sections of coils 14
Length, diameter, material are the most consistent.
Further, described signal output plug 15 input with preamplifier 16 again is connected, preamplifier 16
It is connected with signal condition or detector unit (such as oscillograph), it is possible to the high-frequency current signal of coupling is analyzed.Signal
Output plug 15 output signal is differential signal, is connected with described preamplifier 16 by twin-concentric cable, described before
Put amplifier 16 and differential signal amplification is output as single-ended signal.Alternatively, described preamplifier 16 amplifies for differential signal
Device, its input is differential signal, and output signal is single-ended signal.The present invention, creatively by the principle of differential amplification, introduces
In high frequency sensors, make full use of difference channel and effectively eliminate interference and the feature of twice amplification primary signal, effectively carry
The high capacity of resisting disturbance of High Frequency Current Sensor, and greatly improve the sensitivity of sensor.
Signal detection sensitivity test embodiment
The present invention provide current sensor equivalent circuit as shown in Figure 4, wherein I1T () is primary current, U1(t) and U2
T () is respectively the induced voltage of two sections of coils, Ls1And Ls2It is the self-induction of two sections of coils, Rs1And Rs2It it is self electricity of two coils
Resistance, Cs1And Cs2Being the stray capacitance of two coils, R is load resistance.It is equal for ensureing the differential signal amplitude of output, it is desirable to
Two sections of loop lengths, diameter materials are consistent, i.e. Ls1=Ls2、Rs1=Rs2、Cs1=Cs2, so for same primary current, two sections
It is equal that coil can couple amplitude, the induced voltage U of opposite in phase1(t) and U2(t)。
In the present embodiment, core material internal-and external diameter used is respectively 48 and 65mm, and coil section amasss 8m2, around wire turn
Number is 1, uses 2 reverse winding output differential signals, with conventional current sensors, only uses and export single-ended letter with 1 coil
Number as comparison.Circuit connects as shown in Figure 5.Signal generator used is RIGOL DG4162, and output signal is a tentering
The sinusoidal signal of value or pulse signal；Signal detector used is RIGOL DS4034 four-way oscillograph, load used
Resistance is the noninductive resistance of 50 ohm；Differential signal amplifier used has 3 different amplifications: 20,40 and 60dB.
Table 1 shows that signal generator exports different frequency, the sinusoidal signal of different amplitudes, High Frequency Current Sensor that the present invention provides and
Traditional sensors, the difference of the signal amplitude of output, it is seen that in the range of 1M to 150M, the high frequency electric sensing that the present invention provides
The signal that device is coupled to is amplified much larger than traditional sensors.Even if the highest detection also can be had sensitive to faint electric current
Degree.
The signal of different frequency, amplitude is responded by table 1 High Frequency Current Sensor
Note :/represent beyond oscillographic range
To improve transducer sensitivity as far as possible it is necessary to less coil is wound around the number of turn.To this end, the present invention uses minimum winding
The number of turn 1 circle, described coil is copper sheet.Alternatively, the sectional area of described coil can be 4-10mm2, sensor sense can be improved
Answer the upper cut-off frequency of frequency band and the sensitivity of high band.In the case of coil turn is certain, other adjustable parameter is for line
Circle is exactly its diameter of wire and isolation material, selects the wire that diameter is big, insulant dielectric constant is little can reduce coil electricity
Hinder to increase the bandwidth of sensor detection；Another adjustable parameter is exactly magnetic core.Described copper sheet can be selected from copper sheet, Huang
Copper sheet, bronze flake and copper-nickel alloy sheet.Preferably, described copper sheet is selected from copper sheet, to improve the detection sensitivity of sensor.
The design of magnetic core includes internal-and external diameter and height and the core material of magnetic core.The present invention with optimal conditions, passes through
Theoretical Calculation and actual tests, present invention preferably uses 0.5-1.2mm thick, the copper sheet of width 5-15mm as being wound around coil,
Using polystyrene as insulant.As another embodiment of the present invention, the present invention selects 0.8mm thick, and width is 10mm
Copper sheet as be wound around coil, be wound around the number of turn 1 circle, to improve detection sensitivity.As an alternative embodiment of the invention, this
Invention can select 1mm thick, width be the copper sheet of 8.8mm as being wound around coil, be wound around the number of turn 1 circle, sensitive to improve detection
Degree.As yet another embodiment of the present invention, the present invention can select 0.9mm thick, and width is that the copper sheet of 10mm is as winding
Coil, is wound around the number of turn 1 circle, to improve detection sensitivity.As an alternative embodiment of the invention, the present invention can select
1.2mm is thick, width be the copper sheet of 6mm as being wound around coil, be wound around the number of turn 1 circle, to improve detection sensitivity.Described copper sheet
Magnetic core selects at the good ferrite core of nickel-zinc of high frequency region performance, and the size of magnetic core, is to be the bigger the better from principle,
In view of the size of cable itself, its optimal internal diameter is the most fixing, and it is 40-55mm that the present invention designs the internal diameter of magnetic core, external diameter
For 55-75mm, height is 20-40mm.As one embodiment of the present of invention, the internal diameter of described magnetic core is 50mm, and external diameter is
70mm, height is 30mm, and as another embodiment of the present invention, the internal diameter of described magnetic core is 53mm, and external diameter is 68mm, highly
For 35mm, as another embodiment of the present invention, the internal diameter of described magnetic core is 45mm, and external diameter is 60mm, and height is 28mm, can
To improve upper cut-off frequency and the sensitivity of high band of sensor sensing frequency band.It should be noted that described magnetic core refers to
The ring type magnetic core being made up of two and half ring type magnetic cores 4.
The High Frequency Current Sensor that the present invention provides operationally, beat around hinge by two Split type metal shielding shells
Opening, be placed on earth cable by shielding box, close hinge, buckles hasp to close Metal shielding shell.Height faint in cable
Frequently current signal senses the magnetic field generating respective change in magnetic core, and the magnetic field of this change senses generation respective change in coil
Electromotive force, this induction electromotive force through signal output plug export.
As can be seen here, the present invention, creatively by the principle of differential amplification, is incorporated in High Frequency Current Sensor, fully profit
Effectively eliminate interference and the feature of twice amplification primary signal with difference channel, be effectively improved the anti-of High Frequency Current Sensor
Interference performance, and greatly improve the sensitivity of sensor.These High Frequency Current Sensor all making the present invention provide can be more preferably
It is applicable to the test environment of complexity, is effectively improved its Detection results and practicality.
Those of ordinary skill in the field are it is understood that the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under the thinking of the present invention, above example
Or can also be combined between the technical characteristic in different embodiments, and there is the different aspect of the present invention as above
Other change of many, in order to simple and clear they do not provide in details.Therefore, all within the spirit and principles in the present invention,
Any omission of being made, amendment, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a High Frequency Current Sensor, it is characterised in that include two split type Metal shielding shell, described metallic shield
The inwall of shell offers groove, and described groove has been embedded in half ring type magnetic core, and described groove offers for passing through magnetic force
Ring-like gap；Leaving space between described half ring type magnetic core and groove, described space is filled with insulant, when two metals
Two and half ring type magnetic core composition ring type magnetic cores when the two ends of shielding shell connect respectively, in described Metal shielding shell；Wherein
It is wound with two sections of coils on one and half ring type magnetic cores, and the winding direction of described two sections of coils is contrary.
High Frequency Current Sensor the most according to claim 1, it is characterised in that described two sections of coils are with half ring type magnetic core
Centrage is that axial symmetry is wound around.
High Frequency Current Sensor the most according to claim 2, it is characterised in that the length of described two sections of coils, diameter, material
Matter and the winding homogeneous cause of the number of turn.
High Frequency Current Sensor the most according to claim 1, it is characterised in that described Metal shielding shell includes arc
Magnetic core groove and cover plate, a sidewall of described magnetic core groove is fixedly connected with cover plate, and described cover plate forms use with the inwall of magnetic core groove
In the groove embedding half ring type magnetic core.
High Frequency Current Sensor the most according to claim 4, it is characterised in that described cover plate is L font, described magnetic core groove
Another sidewall and cover plate between leave ring-like gap.
High Frequency Current Sensor the most according to claim 4, it is characterised in that one end of described magnetic core groove lateral wall is passed through
Hinge is hinged, and the other end is hinged by hasp, and one end of said two magnetic core groove rotates around hinge, and described hasp is for by two
The other end of individual magnetic core groove is opened the latter and is closed.
High Frequency Current Sensor the most according to claim 4, it is characterised in that arrange on an end face of described magnetic core groove
There is hole, location, another end face is provided with locating piece, when two magnetic core grooves mutually close, determining on one of them magnetic core groove
Position block inserts in the hole, location of another magnetic core groove.
High Frequency Current Sensor the most according to claim 1, it is characterised in that one end of described two sections of coils is all and signal
The earth lead of output plug connects, and the other end is connected with two signal core of signal output plug respectively.
High Frequency Current Sensor the most according to claim 1, it is characterised in that the winding number of turn of every section of coil is 1 circle, institute
Stating coil is copper sheet, and the cross-sectional area of described coil is 4-10mm2；
The width in described ring-like gap is 2-10mm, and the internal diameter of described ring type magnetic core is 40-55mm, and external diameter is 55-75m, highly
For 20-40mm.
High Frequency Current Sensor the most according to claim 1, it is characterised in that described insulant is polystyrene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610797832.XA CN106249116A (en) | 2016-08-31 | 2016-08-31 | High Frequency Current Sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610797832.XA CN106249116A (en) | 2016-08-31 | 2016-08-31 | High Frequency Current Sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106249116A true CN106249116A (en) | 2016-12-21 |
Family
ID=58081100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610797832.XA Pending CN106249116A (en) | 2016-08-31 | 2016-08-31 | High Frequency Current Sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106249116A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841912A (en) * | 2017-01-13 | 2017-06-13 | 浙江大学 | Power cable fault is accurately positioned servicing unit and method |
| CN108231385A (en) * | 2018-03-22 | 2018-06-29 | 国家海洋技术中心 | The ocean inductively underwater magnet ring of data transmission |
| CN109375063A (en) * | 2018-11-26 | 2019-02-22 | 广东电网有限责任公司 | Fault traveling wave signal coupling sensor for online fault location device |
| CN110376495A (en) * | 2019-07-24 | 2019-10-25 | 全球能源互联网研究院有限公司 | A kind of partial discharge detecting sensor and its manufacturing method |
| CN110389308A (en) * | 2018-04-16 | 2019-10-29 | 南京理工大学 | Magnetostriction/Piezoelectric anisotropy sensitivity enhancement magnetic gradient probe |
| CN111610368A (en) * | 2020-05-29 | 2020-09-01 | 北京北方华创微电子装备有限公司 | Impedance sensor and semiconductor device |
| CN113092844A (en) * | 2021-04-07 | 2021-07-09 | 云南电网有限责任公司迪庆供电局 | Voltage and current integrated sensing device and clamping sleeve |
| CN113295912A (en) * | 2021-05-28 | 2021-08-24 | 萍乡市四通环保科技有限公司 | Radiation-proof heating Hall current sensor |
| CN115362374A (en) * | 2020-04-02 | 2022-11-18 | 赛峰电气与电源公司 | Ultra-high bandwidth current sensor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247303Y (en) * | 2008-08-20 | 2009-05-27 | 西安供电局 | Current sensor for on-line monitoring cable local discharge |
| CN102751081A (en) * | 2012-07-03 | 2012-10-24 | 深圳市创银科技股份有限公司 | Flexible coil current transformer and production method thereof |
| CN203630282U (en) * | 2013-11-26 | 2014-06-04 | 国家电网公司 | Broadband electromagnetic coupling sensor used for power cable partial discharge detection |
| CN104034943A (en) * | 2014-06-23 | 2014-09-10 | 深圳市中鹏电子有限公司 | PCB Rogowski coil current inductor based on differential wiring |
| CN104316849A (en) * | 2014-10-20 | 2015-01-28 | 国网吉林省电力有限公司长春供电公司 | Double-end measurement based high-voltage cable partial discharge on-line monitoring system |
| CN104376970A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode choke |
| CN204347109U (en) * | 2014-12-19 | 2015-05-20 | 国家电网公司 | A kind of open-type fault transient state current sensor |
| US20160154026A1 (en) * | 2014-11-28 | 2016-06-02 | Lem Intellectual Property Sa | Electrical current transducer with electrostatic shield |
| CN105842595A (en) * | 2016-05-20 | 2016-08-10 | 国家电网公司 | Broadband scanning-type cable partial discharge measurement device |
| CN206132914U (en) * | 2016-08-31 | 2017-04-26 | 北京兴泰学成仪器有限公司 | High frequency current sensor |
-
2016
- 2016-08-31 CN CN201610797832.XA patent/CN106249116A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247303Y (en) * | 2008-08-20 | 2009-05-27 | 西安供电局 | Current sensor for on-line monitoring cable local discharge |
| CN102751081A (en) * | 2012-07-03 | 2012-10-24 | 深圳市创银科技股份有限公司 | Flexible coil current transformer and production method thereof |
| CN203630282U (en) * | 2013-11-26 | 2014-06-04 | 国家电网公司 | Broadband electromagnetic coupling sensor used for power cable partial discharge detection |
| CN104034943A (en) * | 2014-06-23 | 2014-09-10 | 深圳市中鹏电子有限公司 | PCB Rogowski coil current inductor based on differential wiring |
| CN104316849A (en) * | 2014-10-20 | 2015-01-28 | 国网吉林省电力有限公司长春供电公司 | Double-end measurement based high-voltage cable partial discharge on-line monitoring system |
| US20160154026A1 (en) * | 2014-11-28 | 2016-06-02 | Lem Intellectual Property Sa | Electrical current transducer with electrostatic shield |
| CN104376970A (en) * | 2014-12-12 | 2015-02-25 | 绵阳市容富电子科技有限公司 | Common-mode choke |
| CN204347109U (en) * | 2014-12-19 | 2015-05-20 | 国家电网公司 | A kind of open-type fault transient state current sensor |
| CN105842595A (en) * | 2016-05-20 | 2016-08-10 | 国家电网公司 | Broadband scanning-type cable partial discharge measurement device |
| CN206132914U (en) * | 2016-08-31 | 2017-04-26 | 北京兴泰学成仪器有限公司 | High frequency current sensor |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106841912A (en) * | 2017-01-13 | 2017-06-13 | 浙江大学 | Power cable fault is accurately positioned servicing unit and method |
| CN106841912B (en) * | 2017-01-13 | 2019-01-18 | 浙江大学 | The accurate positioning auxiliary device and method of power cable fault |
| CN108231385A (en) * | 2018-03-22 | 2018-06-29 | 国家海洋技术中心 | The ocean inductively underwater magnet ring of data transmission |
| CN108231385B (en) * | 2018-03-22 | 2024-05-03 | 国家海洋技术中心 | Ocean inductively coupled data transmission underwater magnetic ring |
| CN110389308A (en) * | 2018-04-16 | 2019-10-29 | 南京理工大学 | Magnetostriction/Piezoelectric anisotropy sensitivity enhancement magnetic gradient probe |
| CN109375063A (en) * | 2018-11-26 | 2019-02-22 | 广东电网有限责任公司 | Fault traveling wave signal coupling sensor for online fault location device |
| CN110376495A (en) * | 2019-07-24 | 2019-10-25 | 全球能源互联网研究院有限公司 | A kind of partial discharge detecting sensor and its manufacturing method |
| CN115362374A (en) * | 2020-04-02 | 2022-11-18 | 赛峰电气与电源公司 | Ultra-high bandwidth current sensor |
| CN111610368A (en) * | 2020-05-29 | 2020-09-01 | 北京北方华创微电子装备有限公司 | Impedance sensor and semiconductor device |
| CN113092844A (en) * | 2021-04-07 | 2021-07-09 | 云南电网有限责任公司迪庆供电局 | Voltage and current integrated sensing device and clamping sleeve |
| CN113295912A (en) * | 2021-05-28 | 2021-08-24 | 萍乡市四通环保科技有限公司 | Radiation-proof heating Hall current sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106249116A (en) | High Frequency Current Sensor | |
| EP1102998B1 (en) | Closely-coupled multiple-winding magnetic induction-type sensor | |
| US8575918B2 (en) | Wideband transducer for measuring a broad range of currents in high voltage conductors | |
| US20080303511A1 (en) | Precision flexible current sensor | |
| CN104267241A (en) | High-frequency current partial discharge signal acquisition sensor | |
| JP2015508897A (en) | Penetration coil configuration, test apparatus having penetration coil configuration, and test method | |
| CN101013143A (en) | Highly anti-interference alternating-current/magnetic field sensor | |
| CN106054034B (en) | A kind of broadband scan-type cable local discharge measuring device and detection method | |
| CN105842595B (en) | A kind of broadband scan-type cable local discharge measuring device | |
| CN106291063A (en) | High frequency current sensor | |
| CN206132914U (en) | High frequency current sensor | |
| CN205920148U (en) | High frequency current sensor for measurement of partial discharge | |
| WO2011149413A1 (en) | Coil comprising a winding comprising a multi-axial cable | |
| CN207881629U (en) | The stranded Rogovski current sensor of for transformer winding deformation monitoring | |
| CN206311657U (en) | A kind of Rogowski coil transient current sensor | |
| CN206132915U (en) | High frequency current sensor | |
| CN207541138U (en) | A kind of flexible current sensor of for transformer winding deformation monitoring | |
| US3546580A (en) | Magnetic field variometer using a low noise amplifier and a coil-core arrangement of minimum weight and maximum sensitivity | |
| CN111239574A (en) | Differential high-frequency current sensor for series arc fault signal acquisition | |
| JP2015021743A (en) | Current waveform measurement device | |
| US10782320B2 (en) | Method and sensor for measuring an alternating current | |
| CN103149412B (en) | Electric current transducer capable of being installed on line and manufacturing method | |
| CN105807117A (en) | Current sensing circuit for current measuring probe and current measuring probe | |
| Kumar et al. | Development and validation of rogowski coil with commercial high frequency current transformer for partial discharge detection | |
| CN204287389U (en) | High-frequency current local discharge signal pick-up transducers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161221 |