CN113917214B - Self-integration Rogowski coil disc-shaped integration resistor and manufacturing method thereof - Google Patents
Self-integration Rogowski coil disc-shaped integration resistor and manufacturing method thereof Download PDFInfo
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- CN113917214B CN113917214B CN202111105862.7A CN202111105862A CN113917214B CN 113917214 B CN113917214 B CN 113917214B CN 202111105862 A CN202111105862 A CN 202111105862A CN 113917214 B CN113917214 B CN 113917214B
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- 230000010354 integration Effects 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 238000010992 reflux Methods 0.000 claims abstract description 23
- 238000004804 winding Methods 0.000 claims abstract description 19
- 239000004020 conductor Substances 0.000 claims abstract description 9
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 9
- 238000005476 soldering Methods 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- JAYCNKDKIKZTAF-UHFFFAOYSA-N 1-chloro-2-(2-chlorophenyl)benzene Chemical compound ClC1=CC=CC=C1C1=CC=CC=C1Cl JAYCNKDKIKZTAF-UHFFFAOYSA-N 0.000 description 3
- 101100084627 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) pcb-4 gene Proteins 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005674 electromagnetic induction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- 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
- G01R19/0046—Arrangements for measuring currents or voltages or for indicating presence or sign thereof characterised by a specific application or detail not covered by any other subgroup of G01R19/00
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Abstract
The disc-shaped integrating resistor comprises a coaxial resistor disc, wherein the coaxial resistor disc comprises a disc-shaped PCB and a plurality of patch resistors arranged on the PCB in a radial annular manner, the resistance value and the number of the patch resistors are determined according to the integration condition of the self-integrating rogowski coil, and the coaxial resistor disc is arranged in a mounting hole formed in the side face of a shell of the rogowski coil; the reflux body is sleeved outside the coaxial resistor disc and used for fixing the coaxial resistor disc, the reflux body is used as a reflux conductor and is electrically connected and fixed with the shell of the Rogowski coil, and one end of the reflux body far away from the Rogowski coil is provided with a cable head coaxial with the coaxial resistor disc; the central electrode of the coaxial resistor disc is electrically connected with one end of the Rogowski coil winding and one pole of the matching resistor arranged between the coaxial resistor disc and the cable head.
Description
Technical Field
The invention relates to the technical field of pulse current measurement, in particular to a self-integration Rogowski coil disc-shaped integration resistor and a manufacturing method thereof.
Background
The Rogowski Coil (Rogowski Coil for short) is a non-direct current measuring instrument, is not physically connected with a discharge circuit to be measured, and has wide application in alternating current heavy current measurement in the power industry and pulse heavy current measurement in the field of pulse high power.
The principle of the rogowski coil is faraday law of electromagnetic induction and ampere loop law, when a current i to be measured flows through the center of the coil, a magnetic field can be generated in the coil surrounding volume, and the magnetic field changes in response to the change of the current, according to faraday law of electromagnetic induction, the coil winding generates induced electromotive force accordingly, the electromotive force is proportional to the time differential of the current in the conductor, and in order to obtain an output signal proportional to the current, the induced electromotive force needs to be integrated, so an integrator is needed to process the signal. The integration resistor is classified into a self-integration type and an external integration type according to the difference of the integration resistor. Self-integrating rogowski coils are commonly used to measure high frequency, high amplitude current pulses above MHz; the external integration type rogowski coil generally needs an external integration link and is generally suitable for measuring medium-low frequency pulse current signals.
The self-integration Rogowski coil is connected with a sampling resistor in parallel at the outlet end, and the output signal is directly a current signal, so that an integrator is not needed to be additionally arranged, and the self-integration Rogowski coil is more convenient than an external integration Rogowski coil in practical application. Self-integrating rogowski coils can be divided into two types, namely a magnetic core and a hollow type, the rogowski coils with the magnetic core are limited by the performance of the magnetic core, the problems of magnetic saturation and insufficient bandwidth exist, and high-frequency and large-amplitude signals cannot be measured frequently. The hollow rogowski coil has no problems, but in order to meet the self-integration condition and reduce the phase error and amplitude error of the coil, the resistance of the integration resistor needs to be very small (in the order of tens to hundreds of milliohms); in order to reduce waveform distortion to improve the performance of the rogowski coil, it is necessary to reduce the inductance of the integrating resistor. The low inductance and small resistance resistor with limited size is generally difficult to manufacture, and the difference between different individuals is large, so that the low inductance and small resistance resistor is not easy to mass production.
Aiming at the problems that the self-integration Rogowski coil integration resistor is difficult to manufacture and the precision is not easy to control, the patent CN104502664A provides a low-resistance noninductive self-integration Rogowski coil integration resistor and a manufacturing method thereof, adopts a double-sided metal-sprayed film as the integration resistor, and obtains the low-inductance resistor by a reflux method; patent CN106154013a provides a composite rogowski coil integrating resistor and a method for manufacturing the same, which realizes a better measuring effect on low-frequency signals.
The integral resistor provided by the patent CN104502664A is supported by cylindrical metal to form a framework, an insulating layer formed by a thin film material is arranged on the outer surface of the integral resistor, a metal spraying layer is arranged on the outer surface of the insulating layer, wires are led out from the metal spraying layer in a welding mode, and the metal spraying layer is respectively connected with the Rogowski coil winding, the matching resistor and the cable head. The integrating resistor given in patent CN106154013a consists of a reflow device, an external integrating resistor, a self-integrating resistor, a cable head and an integrating capacitor. The external integration resistor and the external integration capacitor are connected in series to form an external integrator; the coil outgoing line of the Rogowski coil is connected with one end of the self-integrating resistor, and the other end of the self-integrating resistor is connected with the Rogowski coil shell; one end of the outer integrator is connected with the other end of the self-integrating resistor, and the other end of the outer integrator is connected with the shell; the shell end of the cable head is connected with the shell end of the Rogowski coil, and the other end of the cable head is connected with one end of the outer integrator.
However, the scheme disclosed in patent CN104502664a has the disadvantages of difficult control of dimensions, high manufacturing difficulty, difficult accurate control of resistance value, smaller range of resistance value, and the like.
The scheme disclosed in the patent CN106154013a has the problems of relatively complex structure, non-ideal measurement effect on high-frequency signals, and the like.
Disclosure of Invention
The embodiment of the invention provides a self-integration Rogowski coil disc-shaped integrating resistor with low resistance and low inductance, which is easy to manufacture in batches and good in consistency, and a manufacturing method thereof.
The self-integration Rogowski coil disc-shaped integrating resistor provided by the embodiment of the invention comprises:
the coaxial resistor disc comprises a disc-shaped PCB and a plurality of patch resistors, wherein the patch resistors are arranged on the PCB and are radially and annularly arranged, the resistance value and the number of the patch resistors are determined according to the integration condition of the self-integration Rogowski coil, and the coaxial resistor disc is arranged in a mounting hole formed in the side face of a shell of the Rogowski coil;
the reflux body is sleeved outside the coaxial resistor disc and used for fixing the coaxial resistor disc, the reflux body is used as a reflux conductor and is electrically connected and fixed with a shell of the rogowski coil, and a cable head coaxial with the coaxial resistor disc is arranged at one end of the reflux body far away from the rogowski coil;
the coaxial resistor disc is characterized in that a Rogowski coil is arranged in a shell of the Rogowski coil, and a center electrode of the coaxial resistor disc is electrically connected with one end of a Rogowski coil winding and one pole of a matching resistor arranged between the coaxial resistor disc and the cable head.
In some embodiments of the invention, the coaxial resistor disc further comprises:
an outer conductive plate;
the inner conductive disc is electrically connected with one pole of the chip resistor, and the other pole of the chip resistor is electrically connected with the outer conductive disc;
the resistance value between the outer conductive disc and the inner conductive disc is the resistance value of all the chip resistors connected in parallel.
In some embodiments of the present invention, the inner conductive plate is provided with a plurality of inner through holes which are arranged in a ring shape at intervals, and the middle part of the inner conductive plate is provided with a through hole.
In some embodiments of the present invention, the outer conductive plate is provided with a plurality of outer through holes arranged in a ring shape at intervals.
In some embodiments of the present invention, after the center electrode of the coaxial resistor disc is electrically connected to one end of the rogowski coil winding and one pole of a matching resistor provided between the coaxial resistor disc and the cable head, the integration resistor is connected in parallel to the rogowski coil winding in circuit topology.
The embodiment of the invention also provides a manufacturing method of the self-integration Rogowski coil disc-shaped integrating resistor, which is used for manufacturing the self-integration Rogowski coil disc-shaped integrating resistor, and comprises the following steps:
a mounting hole is formed in the side face of the shell of the Rogowski coil, a coaxial resistor disc is pressed into the mounting hole, a plurality of patch resistors which are radially and annularly arranged are arranged on the coaxial resistor disc, and soldering tin is used for welding an outer conductive disc of the coaxial resistor disc with the shell of the Rogowski coil;
one end of a winding outgoing line of the Rogowski coil is connected with a through hole on an inner conductive disc of the coaxial resistor disc, and is welded by soldering tin, and the other end of the winding outgoing line is welded with a shell of the Rogowski coil;
welding two ends of a matching resistor arranged between the coaxial resistor disc and the cable head with a through hole of the coaxial resistor disc and a core wire of the cable head respectively;
the reflux body is pressed to the outer conductive plate of the coaxial resistor plate by using threads or flanges.
The self-integration Rogowski coil disc-shaped integrating resistor and the manufacturing method thereof provided by the embodiment of the invention have the following advantages: the manufacturing cost of the Rogowski coil integral resistor can be effectively reduced by utilizing the PCB manufacturing technology and the chip resistor manufacturing technology which are industrially mature and applied, mass production can be realized, and pulse current with the frequency band of 200 kHz-10 MHz and the amplitude of less than 30kA can be measured; meanwhile, the number of the chip resistors is designed by selecting the resistor types, so that the control of the resistance value is conveniently realized. The coaxial structure is adopted, the size of the outgoing line part is reduced, stray inductance can be reduced, the measurement bandwidth of the rogowski coil is improved, and waveform distortion is reduced.
Drawings
Fig. 1 is a schematic diagram of a self-integrating rogowski coil with a disc-shaped integrating resistor of the self-integrating rogowski coil according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a coaxial resistor disc of a self-integrating Rogowski coil disc-shaped integrating resistor provided by an embodiment of the invention;
FIG. 3 is a schematic diagram of A-A in FIG. 2 of a self-integrating Rogowski coil disc-shaped integrating resistor provided by an embodiment of the invention;
fig. 4 is a physical diagram of a disc-shaped integrating resistor of a self-integrating rogowski coil according to an embodiment of the present invention;
fig. 5 is a calibration waveform diagram of a disc-shaped integration resistor of a self-integrating rogowski coil provided by an embodiment of the invention by using a standard rogowski coil.
Reference numerals
1. A cable head; 2. matching the resistor; 3. a chip resistor; 4. a PCB board; 5. a rogowski coil;
6. reflux turns; 7. a housing; 8. a flange; 9. a reflow body; 10. an outer conductive plate;
11. an inner conductive plate; 12. a through hole; 13. an outer through-flow hole; 14. an inner through-flow hole.
Detailed Description
The present invention will be further described with reference to the drawings and the detailed description below, so that those skilled in the art can better understand the technical solutions of the present invention.
The phrases "in one embodiment," "in another embodiment," "in yet another embodiment," "in an embodiment," "in some embodiments," or "in other embodiments" may all be used in this specification to refer to one or more of the same or different embodiments in accordance with the invention.
Specific embodiments of the present invention will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the embodiments of the invention are merely exemplary of the invention, which may be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to ascertain the true intent of the present invention, based on the historical operation of the user, to avoid obscuring the invention with unnecessary or redundant detail. Therefore, specific structural and functional details of the present invention are not intended to be limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed structure.
The embodiment of the invention provides a self-integration Rogowski coil disc-shaped integrating resistor, which comprises a coaxial resistor disc, a reflux body 9, a cable head 1, a matching resistor 2 and the like as shown in fig. 1-5, and particularly, the coaxial resistor disc comprises a disc-shaped PCB 4 and a plurality of patch resistors 3 which are arranged on the PCB 4 in a radial annular arrangement, and the patch resistors 3 are welded by soldering tin to ensure good electric conduction, wherein the patch resistors 3 can adopt low-inductance patch resistors 3, the resistance value and the number of the patch resistors 3 are determined according to the integration condition of the self-integration Rogowski coil 5, namely, the resistance value and the number of the patch resistors can be selected according to the requirement, so that the integration condition of the self-integration Rogowski coil 5 can be met, the accuracy of the output waveform of the Rogowski coil 5 can be ensured, and the coaxial resistor disc is arranged in a mounting hole formed in the side surface of a shell 7 of the Rogowski coil 5; further, one pole of the chip resistor 3 is electrically connected with the inner conductive disc 11, specifically, the electrical connection can be realized by adopting a welding mode, the other pole of the chip resistor 3 is electrically connected with the outer conductive disc 10, specifically, the electrical connection can be realized by adopting a welding mode, and the resistance value between the outer conductive disc 10 and the inner conductive disc 11 is the resistance value of all the chip resistors 3 after being connected in parallel; as an example, the size of the chip resistor 3 may be selected to be 1206 or 6003 or the like according to the actual situation.
The reflux body 9 is sleeved outside the coaxial resistor disc to fix the coaxial resistor disc, the reflux body 9 is used as a reflux conductor to be electrically connected and fixed with the shell 7 of the rogowski coil 5, namely, the reflux body 9 plays the dual roles of mechanical fixing and electrical connection at the same time, and the reflux body 9 is provided with a cable head 1 coaxial with the coaxial resistor disc at one end far away from the rogowski coil 5; in this embodiment, the return body 9 and the housing 7 of the rogowski coil 5 may be connected by a screw or by a flange 8.
The casing 7 of the rogowski coil 5 is internally provided with the rogowski coil 5, a reflux turn 6 is arranged at the central line of the rogowski coil 5, the central electrode of the coaxial resistor disc is electrically connected with one end of the rogowski coil 5 winding and one pole of the matching resistor 2 arranged between the coaxial resistor disc and the cable head 1, and the parallel connection of the integrating resistor and the rogowski coil 5 winding is realized on circuit topology.
In some embodiments of the present invention, the coaxial resistor disc further includes an outer conductive disc 10 and an inner conductive disc 11 formed by laying conductors at the outer edge and near the center, a plurality of inner through holes 14 are arranged on the inner conductive disc 11 in an annular arrangement at intervals, a through hole 12 is arranged in the middle of the coaxial resistor disc, a conductive material is attached to the inner portion of the inner through holes 14, so as to realize electrical connection of two sides of the PCB disc, and the number and positions of the inner through holes 14 can be determined according to practical situations. Further, the outer conductive plate 10 is provided with a plurality of outer through holes 13 arranged in a ring shape at intervals, conductive materials are attached to the inner parts of the outer through holes 13 to realize electrical connection of two sides of the PCB plate, the number and positions of the outer through holes 13 can be determined according to practical situations, and meanwhile, conductors are respectively attached to inner walls of the inner through holes 14 and the outer through holes 13 and respectively communicated with the inner conductive plate 11 and the outer conductive plate 10 on two sides of the PCB plate. The resistance value of the finally formed coaxial resistor disc can be flexibly set between a few milliohms and tens of ohms; meanwhile, as the chip resistor 3 adopts industrial products, the cost is well controlled, and mass production can be performed.
The working process and principle of the self-integration Rogowski coil disc-shaped integration resistor are as follows:
when a large pulse current flows through the rogowski coil 5, an induced electromotive force is generated on the winding of the rogowski coil 5. If the influence of the spurious parameters is not considered, the circuit topology of the self-integrating rogowski coil 5 belongs to a first-order circuit, and in a specific frequency range, the voltage value on the integrating resistor (i.e. the coaxial resistor disc) is in direct proportion to the pulse current amplitude, i.e. in the frequency range, the rogowski coil 5 is in a self-integrating working state. In general, in order to increase the bandwidth of the coil, it is necessary to employ a small integration resistance and reduce the inductance value to improve the high frequency performance thereof. The coaxial disc-shaped integrating resistor provided by the invention adopts a symmetrical coaxial structure, reduces the size of each outgoing line part, has a compact structure, can reduce stray inductance, and ensures that the distortion of the measured waveform is small.
The embodiment of the invention also provides a manufacturing method of the self-integration rogowski coil disc-shaped integrating resistor, which is used for manufacturing the self-integration rogowski coil disc-shaped integrating resistor according to the embodiment, and comprises the following steps:
a mounting hole is formed in the side face of the shell 7 of the Rogowski coil 5, a coaxial resistor disc is pressed into the mounting hole, a plurality of patch resistors 3 which are radially and annularly arranged are arranged on the coaxial resistor disc, and soldering tin is adopted to weld an outer conductive disc 10 of the coaxial resistor disc with the shell 7 of the Rogowski coil 5;
one end of a winding wire of the rogowski coil 5 is connected with a through hole 12 on an inner conductive disc 11 of a coaxial resistor disc and welded by soldering tin, and the other end of the winding wire is welded with a shell 7 of the rogowski coil 5;
welding two ends of a matching resistor 2 arranged between the coaxial resistor disc and the cable head 1 with a through hole 12 of the coaxial resistor disc and a core wire of the cable head 1 respectively;
the return fluid 9 is pressed with a screw thread or flange 8 to an outer conductive disc 10 of the coaxial resistor disc.
In order to facilitate understanding of the above technical solution, the following illustrates the above manufacturing method:
the shell 7 of the rogowski coil 5 can be processed by brass, a round hole is formed in the side face of the shell 7 of the rogowski coil 5, a round mounting hole is formed, a coil-shaped integral resistor (a coaxial resistor disc) is pressed into the hole, and a soldering tin is used for welding an outer conductive disc 10 of the coil-shaped integral resistor with the shell 7 of the rogowski coil 5;
one end of a winding wire of the rogowski coil 5 is connected with a through hole 12 of a disc-shaped integrating resistor and welded by soldering tin, and the other end of the winding wire is welded to a shell 7 of the rogowski coil 5;
the matching resistor 2 is a low-inductance and high-precision resistor with the resistance value of 50 omega, is connected with a 50 omega coaxial cable, and two ends of the matching resistor are respectively welded on the through hole 12 of the disc-shaped integrating resistor and the core wire of the cable head 1;
the cable head 1 is fixed at one end of the reflow body 9 by a screw;
the return body 9 is crimped with a flange 8 to an outer conductive disc 10 of the disc-shaped integrating resistor.
According to the self-integration Rogowski coil disc-shaped integrating resistor and the corresponding manufacturing method provided by the embodiment of the invention, the manufacturing cost of the Rogowski coil 5 integrating resistor can be effectively reduced by utilizing the manufacturing technology of the PCB 4 and the manufacturing technology of the chip resistor 3 which are industrially and well applied, mass production can be realized, and pulse current with the frequency band of 200 kHz-10 MHz and the amplitude of less than 30kA can be measured; meanwhile, the number of the chip resistors 3 is designed by selecting the resistor types, so that the control of the resistance value is conveniently realized. The coaxial structure is adopted, the size of the outgoing line part is reduced, stray inductance can be reduced, the measurement bandwidth of the rogowski coil 5 is improved, and waveform distortion is reduced.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (5)
1. A self-integrating rogowski coil disc-shaped integrating resistor, comprising:
the coaxial resistor disc comprises a disc-shaped PCB and a plurality of patch resistors, wherein the patch resistors are arranged on the PCB and are radially and annularly arranged, the resistance value and the number of the patch resistors are determined according to the integration condition of the self-integration Rogowski coil, and the coaxial resistor disc is arranged in a mounting hole formed in the side face of a shell of the Rogowski coil;
the reflux body is sleeved outside the coaxial resistor disc and used for fixing the coaxial resistor disc, the reflux body is used as a reflux conductor and is electrically connected and fixed with a shell of the rogowski coil, and a cable head coaxial with the coaxial resistor disc is arranged at one end of the reflux body far away from the rogowski coil;
the coaxial resistor disc is arranged on the cable head, and is electrically connected with the coaxial resistor disc and the cable head; the coaxial resistor disc further comprises:
an outer conductive plate;
the inner conductive disc is electrically connected with one pole of the chip resistor, and the other pole of the chip resistor is electrically connected with the outer conductive disc;
the resistance value between the outer conductive disc and the inner conductive disc is the resistance value of all the chip resistors connected in parallel.
2. The self-integrating rogowski coil disc-shaped integrating resistor according to claim 1, characterized in that,
the inner conductive plate is provided with a plurality of inner through holes which are arranged in an annular arrangement at intervals, and the middle part of the inner conductive plate is provided with a through hole.
3. The self-integrating rogowski coil disc-shaped integrating resistor according to claim 2, characterized in that,
the outer conductive plate is provided with a plurality of outer through holes which are arranged in an annular arrangement at intervals.
4. The self-integrating rogowski coil disc-shaped integrating resistor according to claim 1, characterized in that the integrating resistor is connected in parallel to the rogowski coil winding in circuit topology after the center electrode of the coaxial resistor disc is electrically connected to one end of the rogowski coil winding and one pole of a matching resistor provided between the coaxial resistor disc and the cable head.
5. A method of manufacturing a self-integrating rogowski coil disc-shaped integrating resistor according to any one of claims 1 to 4, the method comprising:
a mounting hole is formed in the side face of the shell of the Rogowski coil, a coaxial resistor disc is pressed into the mounting hole, a plurality of patch resistors which are radially and annularly arranged are arranged on the coaxial resistor disc, and soldering tin is used for welding an outer conductive disc of the coaxial resistor disc with the shell of the Rogowski coil;
one end of a winding outgoing line of the Rogowski coil is connected with a through hole on an inner conductive disc of the coaxial resistor disc, and is welded by soldering tin, and the other end of the winding outgoing line is welded with a shell of the Rogowski coil;
welding two ends of a matching resistor arranged between the coaxial resistor disc and the cable head with a through hole of the coaxial resistor disc and a core wire of the cable head respectively;
the reflux body is pressed to the outer conductive plate of the coaxial resistor plate by using threads or flanges.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111105862.7A CN113917214B (en) | 2021-09-22 | 2021-09-22 | Self-integration Rogowski coil disc-shaped integration resistor and manufacturing method thereof |
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| CN202111105862.7A CN113917214B (en) | 2021-09-22 | 2021-09-22 | Self-integration Rogowski coil disc-shaped integration resistor and manufacturing method thereof |
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| CN113917214A CN113917214A (en) | 2022-01-11 |
| CN113917214B true CN113917214B (en) | 2023-10-27 |
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| CN115436680B (en) * | 2022-09-30 | 2024-08-16 | 西北核技术研究所 | Small-resistance signal resistor for self-integration rogowski coil |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012448A (en) * | 2010-10-26 | 2011-04-13 | 西安交通大学 | Rogowski current sensor |
| CN103235169A (en) * | 2013-04-25 | 2013-08-07 | 国家电网公司 | Measuring device for pre-discharging current before insulation breakthrough at VFTO (very fast transient overvoltage) |
| CN203275468U (en) * | 2013-05-13 | 2013-11-06 | 海南电力技术研究院 | Novel Rogowski coil for measuring power transmission line fault traveling wave current |
| CN104459276A (en) * | 2014-11-28 | 2015-03-25 | 西安电子工程研究所 | Rogowski coil for measuring nanosecond pulse current |
| CN104502664A (en) * | 2014-11-14 | 2015-04-08 | 西安交通大学 | Low-resistance non-inductive self-integration Rogowski coil integration resistor and manufacturing method thereof |
| CN204789706U (en) * | 2015-05-13 | 2015-11-18 | 中国人民解放军理工大学 | Open type luo shi coil |
| CN106154013A (en) * | 2016-06-17 | 2016-11-23 | 西安交通大学 | A kind of compound Luo-coil integrating resistor and manufacture method thereof |
| CN206311657U (en) * | 2016-12-07 | 2017-07-07 | 深圳市创银科技股份有限公司 | A kind of Rogowski coil transient current sensor |
| JP2019184270A (en) * | 2018-04-03 | 2019-10-24 | 日置電機株式会社 | Current detection device and current measurement device |
| CN212341315U (en) * | 2019-08-30 | 2021-01-12 | 中国船舶工业系统工程研究院 | Coaxial disc-shaped water resistor for self-integrating Rogowski coil |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006061923A1 (en) * | 2006-12-21 | 2008-07-03 | Siemens Ag | Rogowski sensor and method for measuring a current |
-
2021
- 2021-09-22 CN CN202111105862.7A patent/CN113917214B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012448A (en) * | 2010-10-26 | 2011-04-13 | 西安交通大学 | Rogowski current sensor |
| CN103235169A (en) * | 2013-04-25 | 2013-08-07 | 国家电网公司 | Measuring device for pre-discharging current before insulation breakthrough at VFTO (very fast transient overvoltage) |
| CN203275468U (en) * | 2013-05-13 | 2013-11-06 | 海南电力技术研究院 | Novel Rogowski coil for measuring power transmission line fault traveling wave current |
| CN104502664A (en) * | 2014-11-14 | 2015-04-08 | 西安交通大学 | Low-resistance non-inductive self-integration Rogowski coil integration resistor and manufacturing method thereof |
| CN104459276A (en) * | 2014-11-28 | 2015-03-25 | 西安电子工程研究所 | Rogowski coil for measuring nanosecond pulse current |
| CN204789706U (en) * | 2015-05-13 | 2015-11-18 | 中国人民解放军理工大学 | Open type luo shi coil |
| CN106154013A (en) * | 2016-06-17 | 2016-11-23 | 西安交通大学 | A kind of compound Luo-coil integrating resistor and manufacture method thereof |
| CN206311657U (en) * | 2016-12-07 | 2017-07-07 | 深圳市创银科技股份有限公司 | A kind of Rogowski coil transient current sensor |
| JP2019184270A (en) * | 2018-04-03 | 2019-10-24 | 日置電機株式会社 | Current detection device and current measurement device |
| CN212341315U (en) * | 2019-08-30 | 2021-01-12 | 中国船舶工业系统工程研究院 | Coaxial disc-shaped water resistor for self-integrating Rogowski coil |
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