CN113130176A - High-voltage harmonic transformer - Google Patents
High-voltage harmonic transformer Download PDFInfo
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- CN113130176A CN113130176A CN202110439443.0A CN202110439443A CN113130176A CN 113130176 A CN113130176 A CN 113130176A CN 202110439443 A CN202110439443 A CN 202110439443A CN 113130176 A CN113130176 A CN 113130176A
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- 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
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- 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
- H01F27/02—Casings
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Engineering & Computer Science (AREA)
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a high-voltage harmonic transformer which comprises a shell and an underframe, wherein the shell is fixedly installed on the underframe, a power frequency boosting unit and a harmonic boosting unit are arranged in the shell, an output assembly is arranged at the top of the shell, and the output assembly, the power frequency boosting unit and the harmonic boosting unit are sequentially connected in series; the power frequency boosting unit is used for receiving a power frequency voltage signal sent by a preset power frequency power supply and boosting the power frequency voltage signal; the harmonic boosting unit is used for receiving a harmonic voltage signal sent by a preset harmonic power supply and boosting the harmonic voltage signal; and the output assembly is used for connecting the boosted power frequency voltage signal and the harmonic voltage signal in series and outputting the signals as output voltage. The invention can boost the power supply with harmonic superposed fundamental waves and meet the research and test requirements of high-voltage and large-capacity electrical equipment under multiple harmonic working conditions.
Description
Technical Field
The invention relates to a transformer, in particular to a high-voltage harmonic transformer.
Background
A Transformer (Transformer) is a device that changes an alternating-current voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are as follows: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like.
The transformer is basic equipment for power transmission and distribution, and is widely applied to the fields of industry, agriculture, traffic, urban communities and the like. However, the existing transformer can only boost a pure harmonic power supply and cannot superpose fundamental waves; the requirements of research and test under multiple harmonic working conditions of high-voltage and large-capacity electrical equipment cannot be met.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a high-voltage harmonic transformer which can boost a power supply with harmonic superposed fundamental waves and meet the research and test requirements of high-voltage and large-capacity electrical equipment under multiple harmonic working conditions.
In order to achieve the purpose, the invention is realized by the following technical scheme:
a high-voltage harmonic transformer comprises a shell and a bottom frame, wherein the shell is fixedly arranged on the bottom frame, a power frequency boosting unit and a harmonic boosting unit are arranged in the shell, an output assembly is arranged at the top of the shell, and the output assembly, the power frequency boosting unit and the harmonic boosting unit are sequentially connected in series; the power frequency boosting unit is used for receiving a power frequency voltage signal sent by a preset power frequency power supply and boosting the power frequency voltage signal; the harmonic boosting unit is used for receiving a harmonic voltage signal sent by a preset harmonic power supply and boosting the harmonic voltage signal; and the output assembly is used for connecting the boosted power frequency voltage signal and the harmonic voltage signal in series and outputting the signals as output voltage. The high-voltage harmonic transformer adopts the working principle that the harmonic boosting unit is connected in series with the power frequency boosting unit, so that the purpose that the harmonic power supply is superposed with the power frequency power supply to boost the voltage is achieved. The power frequency power supply transmits a power frequency voltage signal to the power frequency boosting unit, the harmonic power supply transmits a harmonic voltage signal to the harmonic boosting unit, and after the harmonic power supply is serially connected with the high-voltage harmonic transformer for boosting, the output voltage mode has the functions of single harmonic, fundamental wave superposition single harmonic and fundamental wave superposition sub-harmonic.
Further, power frequency boost unit includes: the iron core is of a rectangular frame structure, the iron core is fixedly installed in the iron core clamp, a first insulating cylinder is sleeved on one frame of the iron core, the low-voltage shield is oppositely arranged at two ends of the first insulating cylinder, the power frequency boosting coil is sleeved on the first insulating cylinder, and the high-voltage shield is sleeved on the power frequency boosting coil; and the first insulating cylinder and the low-voltage shielding cover are respectively and fixedly installed on the inner wall of the iron core clamping piece.
Further, the harmonic boosting unit includes: annular iron core, harmonic voltage boosting coil, second insulating cylinder and insulating retaining ring, insulating retaining ring symmetry sets up at second insulating cylinder both ends, and the annular iron core suit is on the second insulating cylinder, and harmonic voltage boosting coil suit is on annular iron core.
Further, the output assembly includes: grading ring, upper flange, glass fiber sleeve pipe and conducting rod, glass fiber sleeve pipe are established at the casing top, and glass fiber sheathed tube bottom and the top intercommunication of casing go up flange fixed mounting on glass fiber sleeve pipe top, and grading ring fixed mounting is on upper flange, and the conducting rod is established at the glass fiber sleeve pipe intraductally, the first end and the last flange joint of conducting rod, and the second end and the power frequency boost coil of conducting rod are connected.
Further, the iron core comprises two C-shaped iron cores which are connected through end parts to form a rectangular frame structure.
Further, the power frequency boosting coil comprises a power frequency low-voltage coil and a power frequency high-voltage coil, the power frequency low-voltage coil is electrically connected with a preset power frequency power supply, the high-voltage end A of the power frequency high-voltage coil is electrically connected with the conducting rod, and the low-voltage end of the power frequency high-voltage coil is electrically connected with the harmonic boosting coil.
Further, the harmonic boosting coil comprises a harmonic low-voltage coil and a harmonic high-voltage coil, the harmonic low-voltage coil is electrically connected with a preset harmonic power supply, the high-voltage end of the harmonic high-voltage coil is electrically connected with the low-voltage end of the power frequency high-voltage coil, and the low-voltage end of the harmonic high-voltage coil is grounded.
Furthermore, a left flange is arranged on the left side wall of the shell, a right flange is arranged on the right side wall of the shell, and the harmonic boosting unit is fixedly installed on the right flange.
Further, the shell adopts an armored shielding shell.
Furthermore, the harmonic boosting units are multiple, and the multiple harmonic boosting units are connected in series with the power frequency boosting unit after being connected in series in a multi-stage mode.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a high-voltage harmonic transformer, which solves the problems that the existing transformer can only boost a pure harmonic power supply and can not superpose fundamental waves; or the fundamental wave of not more than 10kV can be superposed, and the problem of the research and test requirements under the multiple harmonic working conditions of high-voltage and large-capacity electrical equipment can not be met. After the harmonic power supply is superposed with the power frequency power supply and serially boosted, the output voltage mode has the capacity of single harmonic, fundamental wave superposed single harmonic and fundamental wave superposed each subharmonic. And has the advantages of stable product performance, strong anti-interference capability in complex environment, small volume and light weight.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of a power frequency boosting unit of the invention;
FIG. 3 is a left side view of the harmonic boost unit of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
fig. 5 is a circuit schematic of the present invention.
In the figure, 1-grading ring; 2-upper flange; 3-a glass fiber sleeve; 4-a conductive rod; 5-a left flange; 6, a power frequency boosting unit; 7-a housing; 8-a chassis; 9-a harmonic boosting unit; 10-right flange; 601-high voltage shielding case; 602-core clamp; 603-power frequency booster coil; 604-a core; 605-low voltage shield; 606-a first insulating cylinder; 901-ring core; 902-harmonic boost coil; 903-a second insulating cylinder; 904-insulating collar.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.
The high-voltage harmonic transformer shown in fig. 1 comprises a shell 7 and an underframe 8, wherein the shell 7 is fixedly installed on the underframe 8, the shell 7 adopts an armored shielding shell, a power frequency boosting unit 6 and a harmonic boosting unit 9 are arranged in the shell 7, an output assembly is arranged at the top of the shell 7, and the output assembly, the power frequency boosting unit 6 and the harmonic boosting unit 9 are sequentially connected in series; and a left flange 5 is arranged on the left side wall of the shell 7, a right flange 10 is arranged on the right side wall of the shell 7, and a harmonic boosting unit 9 is fixedly installed on the right flange 10.
The power frequency boosting unit 6 is used for receiving a power frequency voltage signal sent by a preset power frequency power supply and boosting the power frequency voltage signal; the harmonic boosting unit 9 is configured to receive a harmonic voltage signal sent by a preset harmonic power supply and boost the harmonic voltage signal; and the output assembly is used for connecting the boosted power frequency voltage signal and the harmonic voltage signal in series and outputting the signals as output voltage.
Wherein, output assembly includes: grading ring 1, upper flange 2, glass fiber sleeve pipe 3 and conducting rod 4, glass fiber sleeve pipe 3 establishes at casing 7 top, and glass fiber sleeve pipe 3's bottom and casing 7's top intercommunication, go up 2 fixed mounting on the 3 tops of glass fiber sleeve pipe of flange, and 1 fixed mounting of grading ring is on upper flange 2, and conducting rod 4 establishes in glass fiber sleeve pipe 3, and the first end and the upper flange 2 of conducting rod 4 are connected, and the second end and the power frequency of conducting rod 4 step up unit 6.
As shown in fig. 2, the power frequency boosting unit 6 includes: the high-voltage shielding case 601, the iron core clamping piece 602, the power frequency booster coil 603, the iron core 604 and the low-voltage shielding case 605, wherein the iron core 604 comprises two C-shaped iron cores, and the two C-shaped iron cores are connected through the end part to form a rectangular frame structure. An iron core 604 is fixedly arranged in an iron core clamping piece 602, a first insulating cylinder 606 is sleeved on one frame of the iron core 604, a low-voltage shielding cover 605 is oppositely arranged at two ends of the first insulating cylinder 606, a power frequency boosting coil 603 is sleeved on the first insulating cylinder 606, and a high-voltage shielding cover 601 is sleeved on the power frequency boosting coil 603; the first insulating cylinder 606 and the low-voltage shielding case 605 are respectively and fixedly mounted on the inner wall of the core clamp 602.
As shown in fig. 3 and 4, the harmonic boosting unit 9 includes: the harmonic booster coil comprises an annular iron core 901, a harmonic booster coil 902, a second insulating cylinder 903 and insulating retaining rings 904, wherein the insulating retaining rings 904 are symmetrically arranged at two ends of the second insulating cylinder 903, the annular iron core 901 is sleeved on the second insulating cylinder 903, and the harmonic booster coil 902 is sleeved on the annular iron core 901.
As shown in fig. 5, the frequency boosting coil 603 includes a power frequency low-voltage coil and a power frequency high-voltage coil, the power frequency low-voltage coil is electrically connected to a preset power frequency power supply, the high-voltage end a of the power frequency high-voltage coil is electrically connected to the conducting rod 4, and the low-voltage end N of the power frequency high-voltage coil is electrically connected to the harmonic boosting coil 902. Harmonic voltage-boosting coil 902 includes a harmonic low-voltage coil and a harmonic high-voltage coil, the harmonic low-voltage coil is electrically connected to a preset harmonic power supply, a high-voltage end a1 of the harmonic high-voltage coil is electrically connected to a low-voltage end N of the power frequency high-voltage coil, and a low-voltage end N1 of the harmonic high-voltage coil is grounded.
In addition, the number of the harmonic boosting units 9 can be multiple, and the multiple harmonic boosting units 9 are connected in series with the power frequency boosting unit 6 after being connected in series in a multi-stage mode.
The embodiment provides a high-voltage harmonic transformer, which adopts the working principle that a harmonic boosting unit is connected in series with a power frequency boosting unit, and further achieves the purpose that a harmonic power supply is superposed with a power frequency power supply to boost. The power frequency power supply transmits a power frequency voltage signal to the power frequency boosting unit, the harmonic power supply transmits a harmonic voltage signal to the harmonic boosting unit, and after the harmonic power supply is serially connected with the high-voltage harmonic transformer for boosting, the output voltage mode has the functions of single harmonic, fundamental wave superposition single harmonic and fundamental wave superposition sub-harmonic.
Due to the fact that the armored shielding shell is adopted, the harmonic boosting units can be connected in series after being connected in series in a multi-stage mode according to use requirements, the power frequency boosting units are connected in series, the iron cores of the harmonic boosting units are high-permeability annular iron cores, the iron cores of the power frequency boosting units are C-shaped iron cores with excellent excitation performance, and the power frequency boosting units are internally filled with SF6 gas insulation structures. The electrical performance of the high-voltage harmonic transformer can be within the range of fundamental voltage frequency: 45-65Hz, harmonic voltage frequency range: 100-5000Hz (2-100 harmonics), superimposed fundamental voltage level: 10kV-550kV, superposition fundamental current: 0.4A-4A, the content of output harmonic voltage accounts for the range of fundamental voltage: 0.2 to 5 percent.
The invention is further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
Claims (10)
1. A high-voltage harmonic transformer is characterized by comprising a shell (7) and an underframe (8), wherein the shell (7) is fixedly installed on the underframe (8), a power frequency boosting unit (6) and a harmonic boosting unit (9) are arranged in the shell (7), an output assembly is arranged at the top of the shell (7), and the output assembly, the power frequency boosting unit (6) and the harmonic boosting unit (9) are sequentially connected in series;
the power frequency boosting unit (6) is used for receiving a power frequency voltage signal sent by a preset power frequency power supply and boosting the power frequency voltage signal;
the harmonic boosting unit (9) is used for receiving a harmonic voltage signal sent by a preset harmonic power supply and boosting the harmonic voltage signal;
and the output assembly is used for connecting the boosted power frequency voltage signal and the harmonic voltage signal in series and outputting the signals as output voltage.
2. The high-voltage harmonic transformer of claim 1, wherein the power frequency boost unit (6) comprises: the high-voltage power-frequency booster coil comprises a high-voltage shielding cover (601), an iron core clamping piece (602), a power-frequency booster coil (603), an iron core (604) and a low-voltage shielding cover (605), wherein the iron core (604) is of a rectangular frame structure, the iron core (604) is fixedly installed in the iron core clamping piece (602), a first insulating cylinder is sleeved on one frame of the iron core (604), the low-voltage shielding cover (605) is oppositely arranged at two ends of the first insulating cylinder, the power-frequency booster coil (603) is sleeved on the first insulating cylinder (606), and the high-voltage shielding cover (601) is sleeved on the power-frequency booster coil (603); the first insulating cylinder (606) and the low-voltage shielding case (605) are fixedly mounted on the inner wall of the iron core clamping piece (602) respectively.
3. High-voltage harmonic transformer according to claim 2, characterized in that the harmonic boosting unit (9) comprises: annular iron core (901), harmonic boost coil (902), second insulating cylinder (903) and insulating retaining ring (904), insulating retaining ring (904) symmetry sets up at second insulating cylinder (903) both ends, and annular iron core (901) suit is on second insulating cylinder (903), and harmonic boost coil (902) suit is on annular iron core (901).
4. The high voltage harmonic transformer of claim 3 wherein the output assembly comprises: grading ring (1), go up flange (2), glass fiber sleeve pipe (3) and conducting rod (4), establish at casing (7) top glass fiber sleeve pipe (3), the bottom of glass fiber sleeve pipe (3) and the top intercommunication of casing (7), go up flange (2) fixed mounting on glass fiber sleeve pipe (3) top, grading ring (1) fixed mounting is on last flange (2), conducting rod (4) are established in glass fiber sleeve pipe (3), the first end and the last flange (2) of conducting rod (4) are connected, the second end and the power frequency boost coil (603) of conducting rod (4) are connected.
5. The high-voltage harmonic transformer of claim 2, wherein the core (604) comprises two C-shaped cores connected by ends to form a rectangular frame structure.
6. The high-voltage harmonic transformer of claim 4, wherein the power frequency step-up coil (603) comprises a power frequency low-voltage coil and a power frequency high-voltage coil, the power frequency low-voltage coil is electrically connected with a preset power frequency power supply, the high-voltage end of the power frequency high-voltage coil is electrically connected with the conducting rod (4), and the low-voltage end of the power frequency high-voltage coil is electrically connected with the harmonic step-up coil (902).
7. The high-voltage harmonic transformer of claim 6, wherein the harmonic boosting coil (902) comprises a harmonic low-voltage coil and a harmonic high-voltage coil, the harmonic low-voltage coil is electrically connected with a preset harmonic power supply, the high-voltage end of the harmonic high-voltage coil is electrically connected with the low-voltage end of the power-frequency high-voltage coil, and the low-voltage end of the harmonic high-voltage coil is grounded.
8. The high-voltage harmonic transformer according to claim 3, wherein a left flange (5) is arranged on the left side wall of the housing (7), a right flange (10) is arranged on the right side wall of the housing (7), and the harmonic boosting unit (9) is fixedly mounted on the right flange (10).
9. High-voltage harmonic transformer according to claim 1, characterized in that the housing (7) is a armoured shielding housing.
10. The high-voltage harmonic transformer according to claim 1, wherein the number of the harmonic voltage boosting units (9) is multiple, and the multiple harmonic voltage boosting units (9) are connected in series with the power frequency voltage boosting unit (6) in a multistage manner.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110439443.0A CN113130176B (en) | 2021-04-23 | 2021-04-23 | High-voltage harmonic transformer |
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| CN202110439443.0A CN113130176B (en) | 2021-04-23 | 2021-04-23 | High-voltage harmonic transformer |
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| CN113130176A true CN113130176A (en) | 2021-07-16 |
| CN113130176B CN113130176B (en) | 2023-02-21 |
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