CN203054055U - High voltage Hall current transformer - Google Patents
High voltage Hall current transformer Download PDFInfo
- Publication number
- CN203054055U CN203054055U CN 201320031373 CN201320031373U CN203054055U CN 203054055 U CN203054055 U CN 203054055U CN 201320031373 CN201320031373 CN 201320031373 CN 201320031373 U CN201320031373 U CN 201320031373U CN 203054055 U CN203054055 U CN 203054055U
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- circuit board
- hall current
- open circuit
- high voltage
- installation room
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- 238000009413 insulation Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 49
- 238000006243 chemical reaction Methods 0.000 claims description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 239000013307 optical fiber Substances 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 230000005693 optoelectronics Effects 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 3
- 239000005300 metallic glass Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a high voltage Hall current transformer. The high voltage Hall current transformer comprises a Hall current sensor, a high potential circuit board, a low potential circuit board, and a high voltage isolation transformer and further comprises a casing, wherein a surface of the casing is provided with a corrugated insulation umbrella skirt, a top portion of the casing is mounted with a Hall current sensor mounting plate through fixing embedding members, the Hall current sensor is mounted on the Hall current sensor mounting plate, an upper portion in the casing is provided with an open circuit board mounting chamber II, the high potential circuit board is arranged in the open circuit board mounting chamber II, the high voltage isolation transformer is arranged at a central portion of the casing, a lower portion in the casing is provided with an open circuit board mounting chamber I, and the low potential circuit board is arranged in the open circuit board mounting chamber I. The high voltage Hall current transformer has advantages of good performance, small volume, low cost, easy manufacturing, convenient use and safe and reliable performances.
Description
Technical field
The utility model relates to a kind of high pressure Hall current mutual inductor.
Background technology
At present, domestic and international all kinds of high-tension current inductor, though be suitable for detecting the power frequency high voltage and current, but be difficult to detect electric current and the DC current of optional frequency, random waveform, though Hall current sensor can address this problem, but they are nearly all by low voltage operating environmental requirement design and manufacturing, its pattern and structure also only are suitable for using under the low-voltage environment, owing to be subjected to the restriction of structure and mentality of designing, present most Hall current sensor is not adapted at using under the condition of high voltage, mainly has following problem:
1, the material of making the Hall current sensor housing uses the dielectric strength deficiency, easily by high electrical breakdown by the low voltage operating Environment Design under high voltage;
2, structurally, noble potential part and secondary electronegative potential part apart from wretched insufficiency, particularly on housing, do not prevent the corrugated insulation full skirt of creepage and discharge, under high voltage environment, use and very easily take place creepage and discharge;
3, under high voltage condition, can't satisfy the requirement that the world or relative national standards are played a game and put;
4, do not have reliable special-purpose grounding measures, safety in utilization is poor under high voltage environment.
Along with fast development of national economy and technical progress, high voltage converter, high voltage static reactive-load compensator STATCOM are that power electronic equipments such as SVG, high-voltage direct current (DC) power system, high pressure HVDC Light current transformer and high voltage direct current ice-melt supply unit are obtaining extensive utilization, be badly in need of a kind ofly can detecting 35kV and following for this reason, comprise the optional frequency of 25kV and 10kV electric pressure, the electric current of random waveform and the new type current transformer in high voltage of DC current, satisfy the growing active demand of above-mentioned power electronic equipment.
Summary of the invention
The utility model is at the proposition of above problem, a kind of performance is good, volume is little, cost is low, make high pressure Hall current mutual inductor simple, esy to use, safe and reliable and develop, and it can solve the optional frequency up to 35kV and following electric pressure, the electric current of random waveform and the detection problem of DC current well.
The technical solution of the utility model is:
A kind of high pressure Hall current mutual inductor comprises:
Hall current sensor for detection of electric current;
Connect Hall current sensor and high voltage isolating transformer, be used for that the detected current detection value of Hall current sensor is carried out analog to digital conversion and carry out electric light conversion back again and give the electronegative potential circuit board by Optical Fiber Transmission, and the high frequency square wave alternating voltage of high voltage isolating transformer output is carried out behind the rectifying and wave-filtering output dc voltage to the noble potential circuit board of Hall current sensor power supply;
Connect low-voltage DC or low pressure industrial-frequency alternating current and connect the noble potential circuit board by optical fiber, be used for that low-voltage DC to input transmits or the low pressure industrial-frequency alternating current of input carried out inversion is the high frequency square wave alternating voltage after the rectification, and the current detection value light signal that the noble potential circuit board transmits is carried out opto-electronic conversion carry out the electronegative potential circuit board exported after the digital-to-analog conversion again;
Connect the electronegative potential circuit board, the high frequency square wave alternating voltage that is used for the electronegative potential circuit board is exported is through exporting to the high voltage isolating transformer of noble potential circuit board after the conversion;
Also comprise: housing; Described surface of shell is provided with undulatory insulation full skirt; Described case top is equipped with the Hall current sensor installing plate by fixing inserts, and described Hall current sensor is installed on the Hall current sensor installing plate; Described housing bottom is provided with the installation inserts;
Described housing internal upper part is provided with the open circuit board installation room II of top end opening; Described noble potential circuit board places in the open circuit board installation room II, is installed to open circuit board installation room II bottom surface by wiring inserts II;
Described high voltage isolating transformer is arranged on middle part in the housing, and this high voltage isolating transformer comprises U-shaped iron core I, the U-shaped iron core II that forms annular core by butt joint; Described U-shaped iron core I is provided with the electronegative potential primary coil that is wound on the insulation framework; Described U-shaped iron core II is provided with the noble potential secondary coil that is wound on the insulation framework;
The bottom is provided with the open circuit board installation room I of bottom end opening in the described housing; Described electronegative potential circuit board places in the open circuit board installation room I, is installed to open circuit board installation room I end face by wiring inserts I;
Described optical fiber passes open circuit board installation room I respectively and is connected with electronegative potential circuit board, noble potential circuit board with open circuit board installation room II;
Further, described open circuit board installation room I, high voltage isolating transformer, open circuit board installation room II, optical fiber place part outside open circuit board installation room I and the open circuit board installation room II, fixedly inserts, inserts is installed is encapsulated in by poured with epoxy resin and forms a sealing entity in the housing;
Further, the U-shaped iron core I of described high voltage isolating transformer and U-shaped iron core II are made of ferrite or non-crystaline amorphous metal;
Further, the copper insert that be provided with internal thread of described installation inserts for being communicated with by lead.
Owing to adopted technique scheme, the high pressure Hall current mutual inductor that the utility model provides, detect electric current by a kind of Hall current sensor, current detection value carries out analog to digital conversion through the noble potential circuit board and carries out giving the electronegative potential circuit board by Optical Fiber Transmission after the electric light conversion again, the electronegative potential circuit board carries out opto-electronic conversion again and carries out exporting after the digital-to-analog conversion again, has realized the electric current of optional frequency, random waveform and the detection of DC current; The low-voltage DC of input is transmitted or the low pressure industrial-frequency alternating current of input carried out inversion is the high frequency square wave alternating voltage after the rectification by the electronegative potential circuit board, output dc voltage is given Hall current sensor and noble potential circuit board self power supply after by the noble potential circuit board high frequency square wave alternating voltage being carried out rectifying and wave-filtering again, the coupling of employing high voltage isolating transformer has realized that electric energy is by the efficient isolation conversion of low potential side to hot side; By the poured with epoxy resin housing, with be equipped with open circuit board installation room, high voltage isolating transformer, the optical fiber of electronegative potential circuit board and noble potential circuit board a part, install inserts and fixedly the inserts one-time cast-forming be encapsulated in the housing, guaranteed enough dielectric strengths and physical strength; Adopt surface of shell to be provided with undulatory insulation full skirt, increase creepage distance, can effectively prevent creepage or discharge, improve reliability and security; The copper insert that passes through the lead connection that is provided with by housing bottom and top is used for this Unit Installation with fixing, and wherein the copper insert of housing bottom also has the safety ground function concurrently; The utility model can directly apply to the optional frequency up to 35kV and following electric pressure, the electric current of random waveform and the detection of DC current, has characteristics such as performance is good, volume is little, cost is low, manufacturing is simple, esy to use, safe and reliable.
Description of drawings
Fig. 1 is front view of the present utility model;
Fig. 2 is side view of the present utility model;
Fig. 3 is vertical view of the present utility model;
Fig. 4 is upward view of the present utility model;
Fig. 5 is A-A sectional view of the present utility model;
Fig. 6 is electrical principle block scheme of the present utility model.
Among the figure: 1, housing, 2, the insulation full skirt, 3, Hall current sensor, 4, Hall current sensor installing plate, 5, the noble potential circuit board, 6, optical fiber, 7, high voltage isolating transformer, 8, the electronegative potential circuit board, 9, wiring inserts II, 10, wiring inserts I, 11, fixing inserts, 12, inserts is installed, 13, open circuit board installation room II, 14, open circuit board installation room I, 15, U-shaped iron core I, 16, electronegative potential primary coil, 17, the noble potential secondary coil, 18, U-shaped iron core II.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and a kind of high pressure Hall current mutual inductor shown in Figure 6, comprising: for detection of the Hall current sensor 3 of electric current; Connect Hall current sensor 3 and high voltage isolating transformer 7, be used for that Hall current sensor 3 detected current detection values are carried out analog to digital conversion and carry out electric light conversion back again and be transferred to electronegative potential circuit board 8 by optical fiber 6, and output dc voltage was given the noble potential circuit board 5 of Hall current sensor 3 and self power supply after the high frequency square wave alternating voltage of high voltage isolating transformer 7 outputs carried out rectifying and wave-filtering; Connect low-voltage DC or low pressure industrial-frequency alternating current and connect noble potential circuit board 5 by optical fiber 6, be used for that low-voltage DC to input transmits or the low pressure industrial-frequency alternating current of input carried out inversion is the high frequency square wave alternating voltage after the rectification, and the current detection value light signal that noble potential circuit board 5 transmits is carried out opto-electronic conversion carry out the electronegative potential circuit board 8 exported after the digital-to-analog conversion again; Connect electronegative potential circuit board 8, the high frequency square wave alternating voltage that is used for electronegative potential circuit board 8 is exported is through exporting to the high voltage isolating transformer 7 of noble potential circuit board 5 after the conversion; Also comprise: housing 1; Described housing 1 surface is provided with undulatory insulation full skirt 2; Described housing 1 top is equipped with Hall current sensor installing plate 4 by fixing inserts 11, and described Hall current sensor 3 is installed on the Hall current sensor installing plate 4; Described housing 1 bottom is provided with installs inserts 12; Described housing 1 internal upper part is provided with the open circuit board installation room II 13 of top end opening; Described noble potential circuit board 5 places in the open circuit board installation room II 13, is installed to open circuit board installation room II 13 bottom surfaces by wiring inserts II 9; Described high voltage isolating transformer 7 is arranged on middle part in the housing 1, and this high voltage isolating transformer 7 comprises U-shaped iron core I 15, the U-shaped iron core II 18 that forms annular core by butt joint; Described U-shaped iron core I 15 is provided with the electronegative potential primary coil 16 that is wound on the insulation framework; Described U-shaped iron core II 18 is provided with the noble potential secondary coil 17 that is wound on the insulation framework; The bottom is provided with the open circuit board installation room I 14 of bottom end opening in the described housing 1; Described electronegative potential circuit board 8 places in the open circuit board installation room I 14, is installed to open circuit board installation room I 14 end faces by wiring inserts I 10; Described optical fiber 6 passes open circuit board installation room I 14 respectively and is connected with electronegative potential circuit board 8, noble potential circuit board 5 with open circuit board installation room II 13; Further, described open circuit board installation room I 14, high voltage isolating transformer 7, open circuit board installation room II 13, optical fiber 6 place part outside open circuit board installation room I 14 and the open circuit board installation room II 13, fixedly inserts 11, inserts 12 is installed is encapsulated in by poured with epoxy resin and forms a sealing entity in the housing 1; U-shaped iron core I 15 and the U-shaped iron core II 18 of described high voltage isolating transformer 7 are made of ferrite or non-crystaline amorphous metal; The copper insert that be provided with internal thread of described installation inserts 12 for being communicated with by lead.
The high pressure Hall current mutual inductor that the utility model provides, detect electric current by a kind of Hall current sensor, current detection value carries out analog to digital conversion through the noble potential circuit board and carries out giving the electronegative potential circuit board by Optical Fiber Transmission after the electric light conversion again, the electronegative potential circuit board carries out opto-electronic conversion again and carries out exporting after the digital-to-analog conversion again, has realized the electric current of optional frequency, random waveform and the detection of DC current; The low-voltage DC of input is transmitted or the low pressure industrial-frequency alternating current of input carried out inversion is the high frequency square wave alternating voltage after the rectification by the electronegative potential circuit board, output dc voltage is given Hall current sensor and noble potential circuit board self power supply after by the noble potential circuit board high frequency square wave alternating voltage being carried out rectifying and wave-filtering again, the coupling of employing high voltage isolating transformer has realized that electric energy is by the efficient isolation conversion of low potential side to hot side; By the poured with epoxy resin housing, with be equipped with open circuit board installation room, high voltage isolating transformer, the optical fiber of electronegative potential circuit board and noble potential circuit board a part, install inserts and fixedly the inserts one-time cast-forming be encapsulated in the housing, guaranteed enough dielectric strengths and physical strength; Adopt surface of shell to be provided with undulatory insulation full skirt, increase creepage distance, can effectively prevent creepage or discharge, improve reliability and security; The copper insert that passes through the lead connection that is provided with by housing bottom and top is used for this Unit Installation with fixing, and wherein the copper insert of housing bottom also has the safety ground function concurrently; The utility model can directly apply to the optional frequency up to 35kV and following electric pressure, the electric current of random waveform and the detection of DC current, has characteristics such as performance is good, volume is little, cost is low, manufacturing is simple, esy to use, safe and reliable.
When using this high pressure Hall current mutual inductor, described installation inserts has 4, places respectively on 4 angles of housing bottom, is used for installing and fixing high-tension current inductor, simultaneously as earthing pole; Wiring inserts I has 6, is respectively the copper insert that is provided with internal thread, is used for the installation of electronegative potential circuit board and is electrically connected; Wiring inserts II has 4, is respectively the copper insert that is provided with internal thread, is used for the installation of noble potential circuit board and is electrically connected; The electronegative potential circuit board transmits the low-voltage DC of input or the low pressure industrial-frequency alternating current of input is carried out DC voltage after the rectification and offers photoelectric switching circuit on the electronegative potential circuit board and D/A change-over circuit as power supply; The high frequency square wave alternating voltage that the noble potential circuit board transmits high voltage isolating transformer carries out behind the rectifying and wave-filtering output dc voltage not only to the Hall current sensor power supply, offers A/D change-over circuit on the noble potential circuit board and electro-optical conversion circuit simultaneously as power supply; The utility model is converted to secondary current signal output proportional with it with the optional frequency of noble potential, the primary current of random waveform.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.
Claims (4)
1. high pressure Hall current mutual inductor is characterized in that comprising:
Hall current sensor (3) for detection of electric current;
Connect Hall current sensor (3) and high voltage isolating transformer (7), be used for that the detected current detection value of Hall current sensor (3) is carried out analog to digital conversion and carry out electric light conversion back again and be transferred to electronegative potential circuit board (8) by optical fiber (6), and the high frequency square wave alternating voltage of high voltage isolating transformer (7) output is carried out the noble potential circuit board (5) that output dc voltage is given Hall current sensor (3) and self powered behind the rectifying and wave-filtering;
Connect low-voltage DC or low pressure industrial-frequency alternating current and connect noble potential circuit board (5) by optical fiber (6), be used for that low-voltage DC to input transmits or the low pressure industrial-frequency alternating current of input carried out inversion is the high frequency square wave alternating voltage after the rectification, and the current detection value light signal that noble potential circuit board (5) transmits is carried out opto-electronic conversion carry out the electronegative potential circuit board (8) exported after the digital-to-analog conversion again;
Connect electronegative potential circuit board (8), the high frequency square wave alternating voltage that is used for electronegative potential circuit board (8) is exported is through exporting to the high voltage isolating transformer (7) of noble potential circuit board (5) after the conversion;
Also comprise: housing (1); Described housing (1) surface is provided with undulatory insulation full skirt (2); Described housing (1) top is equipped with Hall current sensor installing plate (4) by fixing inserts (11), and described Hall current sensor (3) is installed on the Hall current sensor installing plate (4); Described housing (1) bottom is provided with installs inserts (12);
Described housing (1) internal upper part is provided with the open circuit board installation room II (13) of top end opening; Described noble potential circuit board (5) places in the open circuit board installation room II (13), is installed to open circuit board installation room II (13) bottom surface by wiring inserts II (9);
Described high voltage isolating transformer (7) is arranged on middle part in the housing (1), and this high voltage isolating transformer (7) comprises U-shaped iron core I (15), the U-shaped iron core II (18) that forms annular core by butt joint; Described U-shaped iron core I (15) is provided with the electronegative potential primary coil (16) that is wound on the insulation framework; Described U-shaped iron core II (18) is provided with the noble potential secondary coil (17) that is wound on the insulation framework;
The interior bottom of described housing (1) is provided with the open circuit board installation room I (14) of bottom end opening; Described electronegative potential circuit board (8) places in the open circuit board installation room I (14), is installed to open circuit board installation room I (14) end face by wiring inserts I (10);
Described optical fiber (6) passes open circuit board installation room I (14) respectively and is connected with electronegative potential circuit board (8), noble potential circuit board (5) with open circuit board installation room II (13).
2. a kind of high pressure Hall current mutual inductor according to claim 1, it is characterized in that described open circuit board installation room I (14), high voltage isolating transformer (7), open circuit board installation room II (13), optical fiber (6) place part outside open circuit board installation room I (14) and the open circuit board installation room II (13), fixedly inserts (11), inserts (12) is installed is encapsulated in by poured with epoxy resin and forms a sealing entity in the housing (1).
3. a kind of high pressure Hall current mutual inductor according to claim 1 is characterized in that the U-shaped iron core I (15) of described high voltage isolating transformer (7) and U-shaped iron core II (18) are made of ferrite or non-crystaline amorphous metal.
4. a kind of high pressure Hall current mutual inductor according to claim 1 is characterized in that the copper insert that be provided with internal thread of described installation inserts (12) for being communicated with by lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031373 CN203054055U (en) | 2013-01-21 | 2013-01-21 | High voltage Hall current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320031373 CN203054055U (en) | 2013-01-21 | 2013-01-21 | High voltage Hall current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203054055U true CN203054055U (en) | 2013-07-10 |
Family
ID=48736995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320031373 Expired - Lifetime CN203054055U (en) | 2013-01-21 | 2013-01-21 | High voltage Hall current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203054055U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086322A (en) * | 2018-01-24 | 2019-08-02 | 郑州三晖电气股份有限公司 | The wiring of current transformer High-current output and mutual inductor, installation, fixed device |
| CN111656473A (en) * | 2018-01-30 | 2020-09-11 | 西门子股份公司 | Current Transformer |
-
2013
- 2013-01-21 CN CN 201320031373 patent/CN203054055U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110086322A (en) * | 2018-01-24 | 2019-08-02 | 郑州三晖电气股份有限公司 | The wiring of current transformer High-current output and mutual inductor, installation, fixed device |
| CN111656473A (en) * | 2018-01-30 | 2020-09-11 | 西门子股份公司 | Current Transformer |
| CN111656473B (en) * | 2018-01-30 | 2023-11-17 | 西门子能源全球有限公司 | Current Transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130710 |
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| CX01 | Expiry of patent term |