CN112039473A - Conformal anti-electromagnetic interference device for power end of substation equipment - Google Patents
Conformal anti-electromagnetic interference device for power end of substation equipment Download PDFInfo
- Publication number
- CN112039473A CN112039473A CN202010843206.6A CN202010843206A CN112039473A CN 112039473 A CN112039473 A CN 112039473A CN 202010843206 A CN202010843206 A CN 202010843206A CN 112039473 A CN112039473 A CN 112039473A
- Authority
- CN
- China
- Prior art keywords
- conformal
- common
- electromagnetic interference
- differential mode
- capacitor
- 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 10
- 238000003306 harvesting Methods 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 34
- 230000036039 immunity Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 6
- 230000002265 prevention Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 10
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 3
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0138—Electrical filters or coupling circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Filters And Equalizers (AREA)
Abstract
The invention discloses a conformal anti-electromagnetic interference device for a power supply end of transformer substation equipment, and belongs to the technical field of anti-electromagnetic interference. An anti-electromagnetic interference device for a power supply end of a substation equipment, the device comprising: a conformal input port conformal with a power device energizing side port; the processor is connected between the conformal input port and the conformal output port, and is a low-pass filter combined by the anti-pulse group device and the shielding metal shell; a conformal output port that is conformal with the secondary device energy-harvesting side port. The invention has the advantages of convenient installation, plug and play, good pulse group prevention filtering effect, reliable performance and low cost in use, can improve the anti-electromagnetic interference capability of the transformer substation equipment, reduce the equipment failure rate and ensure the safe and stable operation of the equipment.
Description
Technical Field
The invention relates to the technical field of anti-electromagnetic interference, in particular to a conformal anti-electromagnetic interference device for a power supply end of substation equipment.
Background
The transformer substation electromagnetic environment is complex, interference signals such as transient interference, ground potential disturbance, lightning stroke, electrostatic discharge interference, electric fast pulse group interference and surge interference exist, the probability that secondary equipment is subjected to electromagnetic interference is high, the reliability of the equipment is seriously influenced, the reliability of the equipment is reduced, and the normal operation of a power grid is influenced. Therefore, a filtering device for resisting electromagnetic interference of a transformer substation is needed to be additionally arranged on equipment, however, the transformer substation equipment is produced and formed, and a conformal filtering device which does not change the original structure of the equipment is needed to be additionally arranged between the equipment and a power supply. The filtering device has the characteristics of low cut-off frequency and high-frequency insertion loss, has the function of preventing pulse groups, can be conformal with a device power adapter or a device aviation plug board, and realizes plug and play; and has a housing structure with good electromagnetic shielding. The method is simple and easy to implement, has stable performance, and can ensure safe and reliable operation of secondary equipment of the transformer substation.
Disclosure of Invention
In order to solve the above problems, the present invention provides an anti-electromagnetic interference device for a power end of a substation device, comprising:
a conformal input port conformal with a power device energizing side port;
the processor is connected between the conformal input port and the conformal output port, and is a low-pass filter combined by the anti-pulse group device and the shielding metal shell;
a conformal output port that is conformal with the secondary device energy-harvesting side port.
Optionally, the metal casing is a fully-enclosed metal casing.
Optionally, the low-pass filter includes a low-pass filter circuit and a pulse burst prevention circuit.
Optionally, the pass filter circuit includes: a common mode inductor L1, a first differential mode capacitor C1, a second differential mode capacitor C2 and a first common mode capacitor C3;
the first common-mode capacitor C3 and the second common-mode capacitor C4 are connected in series and then connected in parallel with the common-mode inductor L1; and a first differential mode capacitor C1 and a second differential mode capacitor C2 connected in parallel with the common mode inductor L1.
Optionally, the anti-pulse burst circuit includes a common mode inductor L2, a differential mode inductor L2, and a differential mode capacitor C5;
the common mode inductor L2 is connected in parallel with a differential mode inductor L2 and a differential mode capacitor C5, and the common mode inductor L2 is connected in parallel with a second differential mode capacitor C2.
The device provided by the invention can be flexibly assembled and disassembled, is conveniently and additionally arranged on equipment at any time on the premise of not changing the structure of the equipment, and improves the anti-electromagnetic interference capability of the substation equipment.
The invention has the advantages of convenient installation, plug and play, good pulse group prevention filtering effect, reliable performance and low cost in use, can improve the anti-electromagnetic interference capability of the transformer substation equipment, reduce the equipment failure rate and ensure the safe and stable operation of the equipment.
Drawings
FIG. 1 is a structural diagram of a conformal electromagnetic interference (EMI) protection device for a power supply terminal of a substation equipment according to the present invention;
FIG. 2 is a circuit diagram of a conformal anti-electromagnetic interference device processor for a power end of a substation equipment according to the present invention;
the circuit comprises a 10 low-pass filter circuit, a 20 anti-pulse group circuit, an L1 common-mode inductor, a C3 first common-mode capacitor, a C4 second common-mode capacitor, a C1 first differential-mode capacitor, a C2 second differential-mode capacitor, an L2 common-mode inductor/differential-mode inductor and a C5 differential-mode capacitor.
Detailed Description
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The invention provides a conformal anti-electromagnetic interference device for a power end of transformer substation equipment, which comprises:
a conformal input port conformal with a power device energizing side port;
the processor is connected between the conformal input port and the conformal output port, and is a low-pass filter combined by the anti-pulse group device and the shielding metal shell;
a conformal output port that is conformal with a secondary device energy supply side port.
The metal shell is a totally-enclosed metal shell.
The low-pass filter comprises a low-pass filter circuit and a pulse burst prevention circuit.
A pass filter circuit comprising: a common mode inductor L1, a first differential mode capacitor C1, a second differential mode capacitor C2 and a first common mode capacitor C3;
the first common-mode capacitor C3 and the second common-mode capacitor C4 are connected in series and then connected in parallel with the common-mode inductor L1; and a first differential mode capacitor C1 and a second differential mode capacitor C2 connected in parallel with the common mode inductor L1.
The anti-pulse group circuit comprises a common-mode inductor L2, a differential-mode inductor L2 and a differential-mode capacitor C5;
the common mode inductor L2 is connected in parallel with a differential mode inductor L2 and a differential mode capacitor C5, and the common mode inductor L2 is connected in parallel with a second differential mode capacitor C2.
The device provided by the invention can be flexibly assembled and disassembled, is conveniently and additionally arranged on equipment at any time on the premise of not changing the structure of the equipment, and improves the anti-electromagnetic interference capability of the substation equipment.
The invention has the advantages of convenient installation, plug and play, good pulse group prevention filtering effect, reliable performance and low cost in use, can improve the anti-electromagnetic interference capability of the transformer substation equipment, reduce the equipment failure rate and ensure the safe and stable operation of the equipment.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The scheme in the embodiment of the application can be implemented by adopting various computer languages, such as object-oriented programming language Java and transliterated scripting language JavaScript.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (5)
1. A conformal electromagnetic interference (emi) immunity apparatus for substation equipment power terminals, the apparatus comprising:
a conformal input port conformal with a power device energizing side port;
the processor is connected between the conformal input port and the conformal output port, and is a low-pass filter combined by the anti-pulse group device and the shielding metal shell;
a conformal output port that is conformal with the secondary device energy-harvesting side port.
2. The apparatus of claim 1, said metal housing being a fully enclosed metal housing.
3. The apparatus of claim 1, the low pass filter comprising a low pass filter circuit and an anti-pulse burst circuit.
4. The apparatus of claim 3, the pass filter circuit, comprising: a common mode inductor L1, a first differential mode capacitor C1, a second differential mode capacitor C2 and a first common mode capacitor C3;
the first common-mode capacitor C3 and the second common-mode capacitor C4 are connected in series and then connected in parallel with the common-mode inductor L1; and a first differential mode capacitor C1 and a second differential mode capacitor C2 connected in parallel with the common mode inductor L1.
5. The apparatus of claim 3, the anti-pulse burst circuit comprising a common mode inductance L2, a differential mode inductance L2, and a differential mode capacitance C5;
the common mode inductor L2 is connected in parallel with a differential mode inductor L2 and a differential mode capacitor C5, and the common mode inductor L2 is connected in parallel with a second differential mode capacitor C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010843206.6A CN112039473A (en) | 2020-08-20 | 2020-08-20 | Conformal anti-electromagnetic interference device for power end of substation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010843206.6A CN112039473A (en) | 2020-08-20 | 2020-08-20 | Conformal anti-electromagnetic interference device for power end of substation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112039473A true CN112039473A (en) | 2020-12-04 |
Family
ID=73579954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010843206.6A Pending CN112039473A (en) | 2020-08-20 | 2020-08-20 | Conformal anti-electromagnetic interference device for power end of substation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112039473A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510991A (en) * | 2020-12-15 | 2021-03-16 | 中国电子科技集团公司第四十四研究所 | EMC protection device and power supply front end filter circuit of small-size photoelectric conversion subassembly |
| CN116131796A (en) * | 2023-03-14 | 2023-05-16 | 昆山灵科传感技术有限公司 | Anti-interference protection circuit of metal shell device and electronic equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794999A (en) * | 2009-12-31 | 2010-08-04 | 西安开容电子技术有限责任公司 | Transient state and stable state resisting combination interference power filter and design method thereof |
| CN102946238A (en) * | 2012-11-26 | 2013-02-27 | 西安开容电子技术有限责任公司 | Filter of power input port of motor speed controller |
| CN203691221U (en) * | 2013-11-27 | 2014-07-02 | 成都新欣神风电子科技有限公司 | Filtering assembly of inverter |
| CN105099165A (en) * | 2014-05-19 | 2015-11-25 | 北京东土科技股份有限公司 | EMC protection and filtering device and method of high voltage power supply |
| US20170062360A1 (en) * | 2015-08-28 | 2017-03-02 | Taiwan Semiconductor Manufacturing Company Ltd. | Semiconductor device and manufacturing method thereof |
| CN111030114A (en) * | 2019-12-17 | 2020-04-17 | 中国电力科学研究院有限公司 | Anti-hybrid electromagnetic interference device for power end of substation equipment |
-
2020
- 2020-08-20 CN CN202010843206.6A patent/CN112039473A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101794999A (en) * | 2009-12-31 | 2010-08-04 | 西安开容电子技术有限责任公司 | Transient state and stable state resisting combination interference power filter and design method thereof |
| CN102946238A (en) * | 2012-11-26 | 2013-02-27 | 西安开容电子技术有限责任公司 | Filter of power input port of motor speed controller |
| CN203691221U (en) * | 2013-11-27 | 2014-07-02 | 成都新欣神风电子科技有限公司 | Filtering assembly of inverter |
| CN105099165A (en) * | 2014-05-19 | 2015-11-25 | 北京东土科技股份有限公司 | EMC protection and filtering device and method of high voltage power supply |
| US20170062360A1 (en) * | 2015-08-28 | 2017-03-02 | Taiwan Semiconductor Manufacturing Company Ltd. | Semiconductor device and manufacturing method thereof |
| CN111030114A (en) * | 2019-12-17 | 2020-04-17 | 中国电力科学研究院有限公司 | Anti-hybrid electromagnetic interference device for power end of substation equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112510991A (en) * | 2020-12-15 | 2021-03-16 | 中国电子科技集团公司第四十四研究所 | EMC protection device and power supply front end filter circuit of small-size photoelectric conversion subassembly |
| CN116131796A (en) * | 2023-03-14 | 2023-05-16 | 昆山灵科传感技术有限公司 | Anti-interference protection circuit of metal shell device and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104135148A (en) | USB (Universal Serial Bus) interface circuit | |
| CN112039473A (en) | Conformal anti-electromagnetic interference device for power end of substation equipment | |
| CN106803748A (en) | A kind of wave filter suitable for protecting electromagnetic pulse interference | |
| CN103474977A (en) | Lightning protection device, lightning protection combination and lightning protection cabinet | |
| CN204652213U (en) | A kind of EMC filter circuit | |
| KR101438120B1 (en) | Protection devices for power line against high altitude electromagnetic pulse | |
| CN204517387U (en) | A kind of EMI and ESD filter array that can be applicable to POS | |
| CN202374172U (en) | Communication device based on advanced telecommunications computing architecture, and filter circuit | |
| CN107579719B (en) | Fast parameter matching power filter assembly | |
| EP4207193A1 (en) | Audio processing system and network camera | |
| CN103414177A (en) | Electromagnetic protection circuit of analog signal input line | |
| KR20180049882A (en) | HEMP Filter for IP Camera Line | |
| KR101228943B1 (en) | HEMP Power Filter and HEMP Protection Power Filter | |
| CN213879785U (en) | High-pass high-order filtering device | |
| CN111030114A (en) | Anti-hybrid electromagnetic interference device for power end of substation equipment | |
| CN210867493U (en) | Multistage harmonic filter of shipborne electric equipment | |
| CN112952785B (en) | Surge protection circuit | |
| CN205195256U (en) | Surge and pulse group suppression circuit | |
| CN201418064Y (en) | Filter for an electronic beam processing apparatus | |
| CN108242802A (en) | Interface protection circuit and equipment interface | |
| CN204377325U (en) | Interference prevention device and system thereof | |
| CN207720098U (en) | A kind of USB interface anti-jamming circuit | |
| CN108120859B (en) | Active electromagnetic shielding generating device | |
| CN206790086U (en) | Interface protection circuit and equipment interface | |
| CN202502967U (en) | Residual current breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |