CN2788323Y - Digital high-voltage combined mutual inductor - Google Patents
Digital high-voltage combined mutual inductor Download PDFInfo
- Publication number
- CN2788323Y CN2788323Y CN 200520033915 CN200520033915U CN2788323Y CN 2788323 Y CN2788323 Y CN 2788323Y CN 200520033915 CN200520033915 CN 200520033915 CN 200520033915 U CN200520033915 U CN 200520033915U CN 2788323 Y CN2788323 Y CN 2788323Y
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- high pressure
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000013307 optical fiber Substances 0.000 claims abstract description 9
- 230000006698 induction Effects 0.000 claims description 11
- 230000009466 transformation Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 abstract description 17
- 238000005516 engineering process Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a digital high-voltage combined transformer, which comprises a first current converter, a voltage sensor, a singlechip and a direct-current working power supply; the first current converter converts large current into small current, and the output of the first current converter is connected with the singlechip; the voltage sensor converts high voltage into low voltage, and the output end of the voltage sensor is connected with the singlechip. The digital high-voltage combined transformer comprises a transformer body, a current transformer and a signal acquisition device, wherein the transformer body, the current transformer and the signal acquisition device are positioned at a high voltage equipotential, and the current transformer and the signal acquisition device are positioned at the upper part of the transformer body; the current transformer comprises a first current converter; the mutual inductor body is a first capacitor; the singlechip, the second capacitor and the resistor are arranged in the signal acquisition device; the single chip microcomputer transmits the processed digital signals to a display through an optical fiber for displaying. The voltage sensor is used for replacing the traditional voltage transformer without an iron core and a coil, so that the designed combined transformer has light weight, small volume and good vibration resistance.
Description
Technical field
The utility model relates to digital high pressure combination transformer.
Background technology
Mostly traditional voltage transformer that is used on the high-voltage conducting wires is to adopt induction voltage transformer or capacitive divided voltage instrument transformer, and these instrument transformers are owing to have coil, and often volume is big, weight big and the anti-vibration performance is not high.
For effectively solving the Insulation Problems of extra-high voltage current transformer and reducing volume and weight, the external superhigh pressure digital electric current transformer of having developed 220～500KV level, basic functional principle is: the instrument transformer ironcore choke directly carries out mould/number (A/D) by single-chip microcomputer after on the superhigh pressure equipotential big current transformation being little electric current handles, and its data-signal sends earthy display to by optical fiber.The dc supply that is in the Single Chip Microcomputer (SCM) system on the superhigh pressure equipotential is provided by photocell, and photronic energy is provided by the high power laser two machine pipe emitted laser of earth potential display; For improving reliability, have the chargeable storage group in parallel with photocell.This product technology content height, volume is little, in light weight, the reliability height.After China introduced this product, existing R﹠D institution was in several years ago succeeding in developing and by national technical appraisement.
Summary of the invention
The purpose of this utility model is exactly for the power issue that solves above high-tension current inductor and alleviates the weight of high voltage potential transformer, the anti-vibration performance of raising voltage transformer, and digital high pressure combination transformer is provided.
The utility model realizes that the above-mentioned purpose scheme is:
Adopt the beneficial effect of above scheme:
1, adopt voltage sensor to replace traditional voltage transformer, voltage sensor adopts the principle of capacitance partial pressure, does not have iron core and coil, makes that the combination transformer that designs is in light weight, volume is little, the anti-vibration performance is good.
2, adopt first power pack to provide charging current for storage battery, the mode that adopts converting charge provides work required DC power supply for single-chip microcomputer etc., and cost is low, the reliability height.
3, second electric capacity is directly got low-voltage output from high potential, second electric capacity, high-voltage conducting wires, single-chip microcomputer, first power pack, second power pack form the high pressure equipotential, make the insulating requirements of digital high pressure combination transformer reduce greatly, improved the reliability and the fail safe of whole device.
4, single-chip microcomputer, second electric capacity and resistor group are contained in the signal pickup assembly, form the high pressure equipotential, thereby the insulating requirements of combination transformer reduce greatly; The coil and the iron core that have not had the conventional voltage instrument transformer, and first electric capacity that needs bear big voltage is made the instrument transformer body, whole device simple in structure, volume is little, the design that is combined into one makes the anti-vibration performance of combination transformer improve greatly.
5, connect single-chip microcomputer and display by optical fiber, the photoelectricity isolation effect of transmission signals is good.
6, increase full skirt in instrument transformer body side wall upper part, both can increase the creepage distance of voltage, can play rainproof effect again.
Description of drawings
Also in conjunction with the accompanying drawings the utility model is described in further detail below by specific embodiment.
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is a front view of the present utility model.
Fig. 3 is the left view of Fig. 2.
Embodiment
Embodiment, a kind of digital high pressure combination transformer as shown in Figure 1, comprises the first power pack LH1, the second power pack LH2, voltage sensor 2, dc supply 3 and single-chip microcomputer 4.
Wherein, the first power pack LH1 is little electric current with the big current transformation in the high-voltage conducting wires 5 on the superhigh pressure equipotential.In the present embodiment, the first power pack LH1 comprises iron core 11 and is around in the induction coil 12 of iron core 11, is useful on the center hole 13 that high-voltage conducting wires 5 passes in unshakable in one's determination 11 inside.High-voltage conducting wires 5 passes the center hole 13 back Primary Conductor as the first power pack LH1 in unshakable in one's determination 11, and induction coil 12 is as the secondary coil of the first power pack LH1, and induction coil 12 is output as the output of the first power pack LH1.The high pressure of high-voltage conducting wires 5 band 25KV in the present embodiment.
Voltage sensor 2 is changed to low-voltage with high-voltage variable, in the present embodiment, described voltage sensor 2 is that first capacitor C 1, second capacitor C 2 are formed voltage divider, the other end of second capacitor C 2 links to each other with high-voltage conducting wires 5, the other end ground connection of first capacitor C 1 is because the voltage at second capacitor C, 2 two ends is the small voltage of output, therefore, first capacitor C 1 needs to adopt high voltage bearing little electric capacity, and second capacitor C 2 needs to adopt big electric capacity; Since adopt solid or liquid as capacitor dielectric, all not really stable for variations in temperature and long-time running, therefore, and stable resistance R in parallel on second capacitor C 2, the resistance of resistance R is enough little, makes voltage output not be subjected to the influence of capacitor C 2.In the present embodiment, the voltage of high-voltage conducting wires 5 is 25KV, and the voltage of voltage sensor 2 outputs is 1V.Because on second capacitor C 2 is small voltage, therefore second capacitor C 2 is to get low-voltage on high potential.In the present embodiment, dc supply 3, the first power pack LH1, the second power pack LH2, single-chip microcomputer 4 and second capacitor C 2 all are operated in the high pressure equipotential of 25KV, there is not pressure reduction, do not need to take insulation processing and can prevent thunderbolt, therefore lower to the insulating requirements of each components and parts, the fail safe and stability that have greatly improved digital high pressure combination transformer.
The signal input part of single-chip microcomputer 4 links to each other with the output of the first power pack LH1, voltage sensor 2 respectively, behind the current signal of single-chip microcomputer 4 receptions first power pack LH1 output and the voltage signal of voltage sensor 2 outputs, carry out A/D and handle, also be provided with on the single-chip microcomputer 4 and the extraneous interface that communicates.
In order to provide DC power supply to single-chip microcomputer 4, can adopt the power supply of laser light battery, dry cell power supply or applicant's converting charge technology, the dc supply structure of converting charge is as follows:
The second power pack LH2 provides charging current for dc supply 3.In the present embodiment, the second power pack LH2 comprises iron core 311 and is around in the induction coil 312 of iron core 311, inside unshakable in one's determination 311 is useful on the center hole 313 that high-voltage conducting wires 5 passes, high-voltage conducting wires 5 passes the center hole 313 in unshakable in one's determination 311, Primary Conductor as the second power pack LH2, induction coil 312 is as the secondary coil of the second power pack LH2, and the output of induction coil 312 is the output of the second power pack LH2.
Dc supply 3 comprises rectification circuit, charging current control loop and storage battery, the input of rectification circuit links to each other with the output of the second power pack LH2, charging current control loop control rectification circuit is to the charging of storage battery, and the output of dc supply 3 links to each other with the power end of single-chip microcomputer 4.In order to prolong the useful life of storage battery 33, can also 2 groups or 2 groups above storage batterys of design configurations.
Display 6 also is set, display 6 is in earth potential, its signal input part links to each other with the signal output part of single-chip microcomputer 4 by optical fiber 7, and the digital quantity signals such as voltage, electric current, frequency, power factor, active power and active energy that single-chip microcomputer is handled well show.Adopting optical fiber 7 can carry out good photoelectricity as the signalling channel between display 6 and the single-chip microcomputer 4 isolates.
The contour structures of the digital high pressure combination transformer in the present embodiment is shown in Fig. 2,3, comprise current transformer 81, instrument transformer body 82 and signal pickup assembly 83, described current transformer 81 and signal pickup assembly 83 are positioned at instrument transformer body 82 tops, and current transformer 81, instrument transformer body 82 and signal pickup assembly 83 all are in the high pressure equipotential.Current transformer 81 is the first power pack LH1, and the center hole of establishing on the current transformer 81 810 is the center hole 13 of the first power pack LH1, and high-voltage conducting wires 5 passes from the center hole 810 of current transformer 81; Instrument transformer body 82 is first capacitor C 1; Dc supply 3, single-chip microcomputer 4, second capacitor C 2, resistance R place in the signal pickup assembly 83.Instrument transformer body 82 need bear the high pressure withstand voltage, and in the present embodiment, instrument transformer body 82 adopts epoxy resin injection mo(u)lding and the outer rubber sleeve of tiing up, and nothing is leaked, reliability is high and anti-aging; What signal pickup assembly 83 adopted is can of sealing, and the element that inside is installed carries out electromagnetic shielding, and high-voltage conducting wires 5 links to each other with the shell of signal pickup assembly 9, forms the high pressure equipotential.
When adopting the converting charge technology to provide DC power supply for single-chip microcomputer 4, the center hole 313 that the second power pack LH2 and the first power pack LH1 are collectively referred to as the center hole 13 of current transformer 81, the first power pack LH1 and the second power pack LH2 is collectively referred to as the center hole 810 of current transformer 81.
Further, in order to increase creepage distance and rainproof, increased full skirt 820 in instrument transformer body 82 side wall upper part.
The mounting means that digital high pressure combination transformer in the present embodiment is installed to the electric locomotive top is: behind the bottom of the instrument transformer body 82 pad rubber sheet gasket thick with 10mm, by 4 M12mm bolt on the roof steel plate 10 of electric locomotive, during use, high-voltage conducting wires 5 passes the center hole 810 of current transformer 81, respectively as the Primary Conductor of the first power pack LH1, the second power pack LH2.
When being provided with display 6, optical fiber 7 is drawn from signal pickup assembly 83, links to each other with the display 6 that is installed in the electric locomotive control room after passing the bottom of instrument transformer body 82.Accompany axial center hole 821 in the present embodiment in the instrument transformer body 82, optical fiber 7 penetrates the socket that arrives approach signal harvester 83 from this axial center hole 821 and connects.
Claims (10)
1, a kind of digital high pressure combination transformer is characterized in that: comprise first power pack (LH1), voltage sensor (2), single-chip microcomputer (4) and dc supply (3); Described first power pack (LH1) is little electric current with big current transformation, and its output links to each other with the current signal input of single-chip microcomputer (4); Described voltage sensor (2) is changed to low-voltage with high-voltage variable, and its output links to each other with the voltage signal input of single-chip microcomputer (4), and the output of described dc supply (3) links to each other with the power end of single-chip microcomputer (4).
2, a kind of digital high pressure combination transformer according to claim 1, it is characterized in that: described first power pack (LH1) comprises iron core (11) and is around in the induction coil (12) of iron core (11), inside in (11) unshakable in one's determination is useful on the center hole that high-voltage conducting wires (5) passes, and induction coil (12) is output as the output of current transformer (1).
3, a kind of digital high pressure combination transformer according to claim 1, it is characterized in that: described voltage sensor (2) comprises first electric capacity (C1), second electric capacity (C2) and resistance (R), first electric capacity (C1), second electric capacity (C2) are formed voltage divider, the other end ground connection of first electric capacity (C1), the other end of second electric capacity (C2) is the input of voltage sensor (2), and second electric capacity (C2) is in parallel with resistance (R).
4, a kind of digital high pressure combination transformer according to claim 1, it is characterized in that: also comprise second power pack (LH2), second power pack (LH2) provide charging current for dc supply.
5, according to one of them described a kind of digital high pressure combination transformer of claim 1-4, it is characterized in that: also comprise display (6), the input of display (6) links to each other with the digital signal output end of single-chip microcomputer (4).
6, a kind of digital high pressure combination transformer as claimed in claim 3, it is characterized in that: comprise current transformer (81), instrument transformer body (82) and signal pickup assembly (83), current transformer (81), instrument transformer body (82) and signal pickup assembly (83) are in the high pressure equipotential, current transformer (81) and signal pickup assembly (83) are positioned at instrument transformer body (82) top, current transformer (81) is provided with the center hole that passes for high-voltage conducting wires (5), and current transformer (81) comprises first power pack (LH1); Instrument transformer body (82) is first electric capacity (C1), and dc supply (3), single-chip microcomputer (4), second electric capacity (C2) and resistance (R) place in the signal pickup assembly (83).
7, a kind of digital high pressure combination transformer according to claim 6, it is characterized in that: described first power pack (LH1) comprises iron core (11) and is around in the induction coil (12) of iron core (11), inside in (11) unshakable in one's determination is useful on the center hole that high-voltage conducting wires (5) passes, induction coil (12) is output as the output of first power pack (LH1), and the center hole of current transformer (81) comprises the center hole of first power pack (LH1).
8, a kind of digital high pressure combination transformer according to claim 7, it is characterized in that: also comprise second power pack (LH2), second power pack (LH2) is for dc supply provides charging current, and current transformer (81) comprises second power pack (LH2).
9, a kind of digital high pressure combination transformer according to claim 6, it is characterized in that: described instrument transformer body (82) side wall upper part has full skirt (820).
10, according to one of them described a kind of digital high pressure combination transformer of claim 6-9, it is characterized in that: also comprise display (6), display (6) links to each other with the digital signal output end of single-chip microcomputer (4) by optical fiber (7), accompanies the axial center hole (821) that can supply optical fiber (7) to pass through in the instrument transformer body (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033915 CN2788323Y (en) | 2005-04-14 | 2005-04-14 | Digital high-voltage combined mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520033915 CN2788323Y (en) | 2005-04-14 | 2005-04-14 | Digital high-voltage combined mutual inductor |
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| Publication Number | Publication Date |
|---|---|
| CN2788323Y true CN2788323Y (en) | 2006-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520033915 Expired - Fee Related CN2788323Y (en) | 2005-04-14 | 2005-04-14 | Digital high-voltage combined mutual inductor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221199B (en) * | 2008-01-23 | 2010-06-16 | 杨振敏 | Equipotential high-tension electric energy measuring apparatus of authigenic power supply |
| CN102866285A (en) * | 2012-09-28 | 2013-01-09 | 北京科锐配电自动化股份有限公司 | Current and voltage integrating type measuring device |
| CN103018529A (en) * | 2012-12-11 | 2013-04-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN113625038A (en) * | 2021-06-23 | 2021-11-09 | 武汉钢铁有限公司 | Current measuring device and voltage and current measuring device |
| CN113804946A (en) * | 2021-09-27 | 2021-12-17 | 杨帆 | Equipotential parasitic power supply voltage and current transformer combination device and working method thereof |
| CN114167178A (en) * | 2021-12-02 | 2022-03-11 | 华北电力大学 | Electric signal measuring device for high-voltage overhead line |
-
2005
- 2005-04-14 CN CN 200520033915 patent/CN2788323Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221199B (en) * | 2008-01-23 | 2010-06-16 | 杨振敏 | Equipotential high-tension electric energy measuring apparatus of authigenic power supply |
| CN102866285A (en) * | 2012-09-28 | 2013-01-09 | 北京科锐配电自动化股份有限公司 | Current and voltage integrating type measuring device |
| CN102866285B (en) * | 2012-09-28 | 2015-12-09 | 北京科锐配电自动化股份有限公司 | Current and voltage integrated measuring device |
| CN103018529A (en) * | 2012-12-11 | 2013-04-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN103018529B (en) * | 2012-12-11 | 2015-06-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN113625038A (en) * | 2021-06-23 | 2021-11-09 | 武汉钢铁有限公司 | Current measuring device and voltage and current measuring device |
| CN113804946A (en) * | 2021-09-27 | 2021-12-17 | 杨帆 | Equipotential parasitic power supply voltage and current transformer combination device and working method thereof |
| CN114167178A (en) * | 2021-12-02 | 2022-03-11 | 华北电力大学 | Electric signal measuring device for high-voltage overhead line |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060614 Termination date: 20140414 |