CN111952043A - Portable power supply device utilizing flexible mutual inductor to obtain energy from cable - Google Patents
Portable power supply device utilizing flexible mutual inductor to obtain energy from cable Download PDFInfo
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- CN111952043A CN111952043A CN202010793933.6A CN202010793933A CN111952043A CN 111952043 A CN111952043 A CN 111952043A CN 202010793933 A CN202010793933 A CN 202010793933A CN 111952043 A CN111952043 A CN 111952043A
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- flexible
- cable
- iron core
- power supply
- energy
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229920001971 elastomer Polymers 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 230000035939 shock Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 239000013307 optical fiber Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229920002994 synthetic fiber Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/33—Arrangements for noise damping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
- H01F38/30—Constructions
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention provides a portable power supply device for taking energy from a cable by utilizing a flexible mutual inductor, which comprises a flexible iron core, an energy taking coil, a clamping protection circuit and a low-power-consumption voltage-stabilized power supply, wherein the flexible iron core is arranged on the flexible iron core; two ends of the flexible iron core are meshed together through the threaded lock catch and sleeved on the cable in a circle; the energy taking coil is wound on the flexible iron core and is electrically connected with the clamping protection circuit, and the low-power-consumption voltage-stabilized power supply is connected with the clamping protection circuit. The flexible cable core disclosed by the invention can be flexibly arranged on cable lines of various sizes by utilizing the deformable characteristic of the flexible iron core and combining the opening and closing structural design of the iron core; the flexible iron core and the cable are fastened together by adopting the rubber damping air bag, so that the vibration and noise of the flexible iron core in the energy taking process are reduced; the clamping and low-power-consumption circuit design is adopted, and the wide-range power frequency voltage output by the energy taking coil is converted into a stable working power supply at high efficiency; the whole set of energy taking device is compact in structure and can be installed in an electrified mode, and the portable energy taking requirements of cable line electrified tests and monitoring equipment are met.
Description
Technical Field
The invention relates to the field of mutual inductor equipment, in particular to a portable power supply device for taking energy from a cable by utilizing a flexible mutual inductor.
Background
With the high-speed development of power grid construction, power cables are more and more widely used and limited by cable laying environment and cable service life, cable faults increase year by year, and power operation and maintenance personnel usually use a live and on-line monitoring device to detect the running state of the cables so as to ensure the safe and reliable running of a power grid.
In order to meet the continuous power supply requirement of a detection device on a field line, solar energy and CT mutual inductance are adopted for energy taking, but the energy taking is limited by the installation condition of a field cable gallery monitoring point and the size of a cable, and the existing energy taking device has many defects in use. Firstly, the corridor can not get energy through sunlight; secondly, three-phase cables in the gallery are laid in parallel, the available space is limited, and the energy taking device is difficult to install; and finally, the cable to be tested has large deviation of the outer diameter of the cable due to different through-current capacity and voltage-resistant grades. There is no effective means for quickly and efficiently installing an energy-extracting device on a power cable.
Patent specification with application number 201710192610.X discloses a current transformer flexible calibration device, and the application comprises: photoelectric processing module, current source, flexible sensing optical fiber, polarized light reflection unit, first metal wire, first metal-back. One end of the flexible sensing optical fiber is connected to the photoelectric processing module, the other end of the flexible sensing optical fiber is connected to the polarized light reflecting unit, the flexible sensing optical fiber is respectively wound to form a first sensing optical fiber coil and a second sensing optical fiber coil, and the second sensing optical fiber coil is wound outside the primary side short-circuit wire of the current transformer. The first metal lead is wound outside the first sensing optical fiber coil and forms a current loop with the current source. The photoelectric processing module sends a polarized light signal to the flexible sensing optical fiber, receives the polarized light signal transmitted back by the flexible sensing optical fiber, and detects the amplitude and the phase angle of the polarized light signal transmitted back by the flexible sensing optical fiber. The invention makes the erection and calibration operation of the on-site current transformer calibration equipment more convenient. However, the patent cannot meet the portable energy-taking requirement of the cable line live test and monitoring equipment.
Disclosure of Invention
The invention provides a portable power supply device for taking energy from a cable by utilizing a flexible mutual inductor.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a portable power supply device for taking energy from a cable by utilizing a flexible mutual inductor comprises a flexible iron core, an energy taking coil, a clamping protection circuit and a low-power-consumption voltage-stabilized power supply; the two ends of the flexible iron core are meshed together through the threaded lock catch and sleeved on the cable in a circle; the energy taking coil is wound on the flexible iron core and is electrically connected with the clamping protection circuit, and the low-power-consumption voltage-stabilized power supply is connected with the clamping protection circuit.
Furthermore, the device also comprises a rubber damping air bag which is arranged on the flexible iron core in an upper and lower two-piece mode and used for clamping the cable so that the flexible iron core and the cable are tightly pressed.
Further, the flexible iron core can be bent into a circular ring, and two ends of the flexible iron core are meshed together through the threaded lock catch.
Furthermore, the clamping protection circuit comprises a silicon controlled rectifier combined detection circuit, and overvoltage pulses are prevented from damaging a low-power-consumption voltage-stabilized power supply.
Further, the flexible iron core is processed into a long strip structure with a cylindrical section.
Preferably, the energy-taking coil is a mechanism processed by adopting a low-impedance high-temperature insulated enameled wire.
Preferably, the rubber shock-absorbing air bag is a mechanism processed by adopting a high polymer synthetic material.
Furthermore, the rubber shock-absorbing air bag is made into an arc-shaped air bag which is divided into an upper section and a lower section and used for tightly pressing the flexible iron core and the cable.
Preferably, the flexible iron core is a mechanism utilizing flexible bonding of permanent magnetic materials.
Preferably, the rubber shock absorbing bladder is made as an inflatable bladder.
According to the invention, the flexible iron core is processed by utilizing a flexible bonding permanent magnet material and is processed into a long strip structure with a cylindrical section, the cylindrical long strip can be bent into a circular ring, and two ends of the long strip are meshed together through a threaded lock catch; the rubber damping air bag is made of a high polymer synthetic material, is customized into an inflatable arc air bag, is divided into an upper section and a lower section, is used for tightly pressing the annular iron core and the cable, and has the effect of reducing the vibration amplitude of the energy-taking iron core; the energy taking coil is processed by adopting a low-impedance high-temperature insulated enameled wire and is wound on the flexible iron core according to a standard turn ratio, and when power frequency current flows through the cable, power frequency voltage can be induced on the energy taking coil; the known iron core is magnetically saturated when high current exists, the energy taking coil can output overvoltage pulse, the overvoltage pulse can be limited within a safety range through the clamping protection circuit, and finally a low-power-consumption voltage-stabilized power supply is connected; the stabilized voltage supply can convert wide-range power frequency voltage into a stable direct current power supply with high efficiency, and the shell of the stabilized voltage supply is electrified to indicate.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the flexible cable core disclosed by the invention can be flexibly arranged on cable lines of various sizes by utilizing the deformable characteristic of the flexible iron core and combining the opening and closing structural design of the iron core; the flexible iron core and the cable are fastened together by adopting the rubber damping air bag, so that the vibration and noise of the flexible iron core in the energy taking process are reduced; the clamping and low-power-consumption circuit design is adopted, and the wide-range power frequency voltage output by the energy taking coil is converted into a stable working power supply at high efficiency; the whole set of energy taking device is compact in structure and can be installed in an electrified mode, and the portable energy taking requirements of cable line electrified tests and monitoring equipment are met.
Drawings
FIG. 1 is a block diagram of the apparatus of the present invention;
FIG. 2 is a diagram of a flexible core structure;
wherein: the energy-obtaining transformer comprises 1-a flexible iron core, 2-a threaded lock catch, 3-an energy-obtaining coil, 4-a rubber sheath, 5-a damping air bag, 6-a cable line, 7-an energy-obtaining mutual inductor, 8-a clamping protection circuit and 9-a low-power-consumption power supply.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1, a portable power supply device for taking energy from a cable by using a flexible mutual inductor comprises a flexible iron core 1, an energy taking coil 3, a clamping protection circuit 8 and a low-power-consumption stabilized power supply 9; two ends of the flexible iron core 1 are meshed together through the threaded lock catch 2 and sleeved on the cable in a circle; the energy taking coil 3 is wound on the flexible iron core 1, the energy taking coil 3 is electrically connected with the clamping protection circuit 8, and the low-power-consumption voltage-stabilized power supply 9 is connected with the clamping protection circuit 8.
As shown in fig. 2, a flexible iron core 1 is processed by using a flexible bonded permanent magnet material and is processed into a long strip structure with a cylindrical section, the cylindrical long strip can be bent into a circular ring, and two ends of the long strip are engaged together through a threaded lock catch 2; the rubber damping air bag 5 is made of a high polymer synthetic material, is customized into an inflatable arc-shaped air bag, is divided into an upper section and a lower section, is used for tightly pressing the annular iron core and the cable, and has the effect of reducing the vibration amplitude of the flexible iron core 1; the energy taking coil 3 is processed by adopting a low-impedance high-temperature insulated enameled wire and is wound on the flexible iron core according to a standard turn ratio, and when power frequency current flows on the cable line 6, power frequency voltage can be induced on the energy taking coil 3; given that the flexible iron core 1 is subjected to magnetic saturation in the presence of large current, the energy taking coil 3 can output overvoltage pulses, the overvoltage pulses can be limited within a safety range through the clamping protection circuit 8, and finally a low-power-consumption voltage-stabilized power supply 9 is connected; the stabilized voltage supply 9 can convert wide-range power frequency voltage into a stable direct current power supply with high efficiency, and the output of the stabilized voltage supply 9 is provided with a power-on indication.
The flexible iron core 1 is used for replacing a hard silicon steel sheet to serve as the iron core of the current transformer, and has good flexibility and plasticity when having the characteristics of small hysteresis loss and eddy current loss, and can be processed into the flexible iron core to manufacture the transformer.
When the current on the line passes through the current transformer, the coil on the flexible iron core 1 can be coupled to output power frequency voltage by utilizing the electromagnetic mutual inductance principle, and the output power of the coil is closely related to the size of the flexible iron core, the load current of the cable and the like.
As the current of a cable line can rise from dozens of amperes to thousands of amperes, the flexible iron core is magnetically saturated, overvoltage pulses can appear at the output of the energy taking coil 3, and the overvoltage clamping circuit 8 is combined with a detection circuit by utilizing bidirectional thyristors to prevent the overvoltage pulses from damaging a low-power-consumption power supply.
The same or similar reference numerals correspond to the same or similar parts;
the positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A portable power supply device for taking energy from a cable by using a flexible mutual inductor is characterized by comprising a flexible iron core, an energy taking coil, a clamping protection circuit and a low-power-consumption stabilized power supply; the two ends of the flexible iron core are meshed together through the threaded lock catch and sleeved on the cable in a circle; the energy taking coil is wound on the flexible iron core and is electrically connected with the clamping protection circuit, and the low-power-consumption voltage-stabilized power supply is connected with the clamping protection circuit.
2. The portable power supply device utilizing the flexible transformer to extract energy from the cable according to claim 1, further comprising a rubber shock-absorbing air bag, wherein the rubber shock-absorbing air bag is divided into an upper section and a lower section and is arranged on the flexible iron core for clamping the cable so that the flexible iron core is tightly pressed with the cable.
3. The portable power supply unit utilizing the flexible transformer to extract power from the cable as claimed in claim 2, wherein the flexible iron core is bendable into a ring, and the two ends are engaged together by a threaded lock.
4. The portable power supply unit using the flexible transformer to extract power from the cable as claimed in claim 3, wherein the clamp protection circuit comprises a thyristor combination detection circuit to prevent overvoltage pulses from damaging the regulated low power supply.
5. The portable power supply device using the flexible transformer to extract power from the cable according to claim 4, wherein the flexible iron core is processed into a long bar structure with a cylindrical section.
6. The portable power supply unit utilizing the flexible transformer to extract energy from the cable according to claim 5, wherein the energy extracting coil is a mechanism processed by using a low-impedance high-temperature insulated enameled wire.
7. The portable power supply unit utilizing the flexible transformer to extract energy from the cable according to claim 6, wherein the rubber shock-absorbing air bag is a mechanism processed by a polymer composite material.
8. The portable power supply device utilizing the flexible transformer to extract energy from the cable according to claim 7, wherein the rubber shock absorption air bag is made into an arc-shaped air bag which is divided into an upper part and a lower part and is used for tightly pressing the flexible iron core and the cable.
9. The portable power supply unit utilizing the flexible transformer to extract power from the cable as recited in claim 8, wherein the flexible iron core is a mechanism utilizing flexible bonding permanent magnetic material.
10. The portable power supply unit using the flexible transformer to extract power from the cable as claimed in claim 9, wherein the rubber shock absorbing bladder is made as an inflatable bladder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793933.6A CN111952043A (en) | 2020-08-10 | 2020-08-10 | Portable power supply device utilizing flexible mutual inductor to obtain energy from cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793933.6A CN111952043A (en) | 2020-08-10 | 2020-08-10 | Portable power supply device utilizing flexible mutual inductor to obtain energy from cable |
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| Publication Number | Publication Date |
|---|---|
| CN111952043A true CN111952043A (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010793933.6A Pending CN111952043A (en) | 2020-08-10 | 2020-08-10 | Portable power supply device utilizing flexible mutual inductor to obtain energy from cable |
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| Country | Link |
|---|---|
| CN (1) | CN111952043A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012103516A1 (en) * | 2012-04-20 | 2013-10-24 | Dipl.-Ing. H. Horstmann Gmbh | Current transformer for use as transducer for short-circuit detection in region of conductors of electrical medium voltage-switching system, has core including ends that are prefixed by form-fit detent connection in overlapping condition |
| CN105023740A (en) * | 2014-04-30 | 2015-11-04 | 桐乡市伟达电子有限公司 | Micro mutual inductor and packaging manufacturing method thereof |
| CN105510679A (en) * | 2016-01-21 | 2016-04-20 | 江苏省电力公司电力科学研究院 | High-reliability and high-precision current measuring method and device |
| CN105785162A (en) * | 2015-01-13 | 2016-07-20 | 弗兰克公司 | Testing device power induced by current transformer |
| CN207924065U (en) * | 2018-03-14 | 2018-09-28 | 国网湖北省电力有限公司荆门供电公司 | A kind of distribution network line intelligent online monitoring device |
| JP2020024101A (en) * | 2018-08-06 | 2020-02-13 | 共立電気計器株式会社 | Clamp sensor and clamp meter |
| CN210881967U (en) * | 2019-10-25 | 2020-06-30 | 盐城市华悦汽车部件有限公司 | Seat wire harness damping mechanism |
| CN210954141U (en) * | 2019-09-17 | 2020-07-07 | 武汉三相电力科技有限公司 | Flexible magnetic core sensor |
-
2020
- 2020-08-10 CN CN202010793933.6A patent/CN111952043A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012103516A1 (en) * | 2012-04-20 | 2013-10-24 | Dipl.-Ing. H. Horstmann Gmbh | Current transformer for use as transducer for short-circuit detection in region of conductors of electrical medium voltage-switching system, has core including ends that are prefixed by form-fit detent connection in overlapping condition |
| CN105023740A (en) * | 2014-04-30 | 2015-11-04 | 桐乡市伟达电子有限公司 | Micro mutual inductor and packaging manufacturing method thereof |
| CN105785162A (en) * | 2015-01-13 | 2016-07-20 | 弗兰克公司 | Testing device power induced by current transformer |
| CN105510679A (en) * | 2016-01-21 | 2016-04-20 | 江苏省电力公司电力科学研究院 | High-reliability and high-precision current measuring method and device |
| CN207924065U (en) * | 2018-03-14 | 2018-09-28 | 国网湖北省电力有限公司荆门供电公司 | A kind of distribution network line intelligent online monitoring device |
| JP2020024101A (en) * | 2018-08-06 | 2020-02-13 | 共立電気計器株式会社 | Clamp sensor and clamp meter |
| CN210954141U (en) * | 2019-09-17 | 2020-07-07 | 武汉三相电力科技有限公司 | Flexible magnetic core sensor |
| CN210881967U (en) * | 2019-10-25 | 2020-06-30 | 盐城市华悦汽车部件有限公司 | Seat wire harness damping mechanism |
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