CN105337506A - Energy supply device from low voltage to high voltage - Google Patents
Energy supply device from low voltage to high voltage Download PDFInfo
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- CN105337506A CN105337506A CN201410387131.XA CN201410387131A CN105337506A CN 105337506 A CN105337506 A CN 105337506A CN 201410387131 A CN201410387131 A CN 201410387131A CN 105337506 A CN105337506 A CN 105337506A
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- isolating transformer
- subelement
- supply device
- power supply
- low pressure
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Abstract
An energy supply device from low voltage to high voltage mainly comprises n (n is more than or equal to 2) isolation transformer subunits (5) and an isolation sleeve (4), wherein the n (n is more than or equal to 2) isolation transformer subunits (5) are connected in series and then are placed in the closed insulation sleeve (4) filled with an insulation medium. By the energy supply device, energy can be supplied from low voltage to high voltage, the energy supply device is simple in structure and is easy to implement, the problem of insulation between an energy supply load and the high voltage is solved, and the power supply reliability is improved.
Description
Technical field
The invention belongs to high voltage power transmission field, be specifically related to a kind of low pressure to high pressure power supply device.
Background technology
In high pressure AC and DC transmission of electricity link, some low voltage control or accumulation power supplies etc. also exist very high potential difference with the high-voltage charged body closed on, and need to carry out insulation processing.If the current potential controlling tank voltage etc. can be brought up to and close on the same current potential of electrified body with it, will effectively solve potential difference problem.The high-voltage switch gear application scenario of such as being connected by multiple fracture, if the potential difference between operating mechanism and fracture adopts the isolation of common insulating material mode to cause, operating mechanism volume is huge, Heavy Weight, is unfavorable for that operating mechanism designs.Low voltage control or accumulation power supply lamp such as adopt the mode of laser function then can cause the unfavorable factors such as energy supply inefficiency, equipment cost are expensive.
Summary of the invention
The object of the invention is to, there is provided a kind of low pressure to high pressure power supply device, this device make use of isolating transformer technology, well solve some control or accumulation power supplies etc. and the problem of closing on high pressure object potential difference in current high voltage power transmission link, significant to the operation stability improving high voltage power transmisson system.
Technical scheme of the present invention is: a kind of low pressure, to high pressure power supply device, is characterized in that, forms, wherein n >=2 by being positioned in 1 group of insulating sleeve after n isolating transformer subelement is connected in series.
In such scheme, described isolating transformer subelement is made up of isolating transformer.
In such scheme, described isolating transformer subelement also comprises grading resistor and equalizing capacitance.
In such scheme, n described isolating transformer subelement, wherein in the 1st grade of subelement, the former limit of isolating transformer connects low pressure energising power, and its secondary connects the former limit of isolating transformer in the 2nd grade of subelement, is sequentially connected in series; In final n-th grade of subelement, the former limit of isolating transformer connects the secondary of isolating transformer in (n-1)th grade of subelement, and one end tap of its secondary is connected to high-voltage charged body, makes power supply device obtain high potential.
In such scheme, described low pressure connects energy supply load to the secondary of the isolating transformer in n-th grade of isolating transformer subelement of high pressure power supply device, thus makes energy supply load be in high potential.
In such scheme, in described isolating transformer subelement, the no-load voltage ratio of isolating transformer designs according to for portative requirement, concrete finger: as supplied portative voltage request to be u2, in 1st grade of isolating transformer subelement, the former limit input voltage of isolating transformer is u1, then n isolating transformer subelement be connected in series after total no-load voltage ratio be u1:u2.
In such scheme, the grading resistor in described isolating transformer subelement is connected in parallel between the former limit of its isolating transformer and secondary.
In such scheme, the equalizing capacitance in described isolating transformer subelement is connected in parallel between the former limit of its isolating transformer and secondary.
In such scheme, be positioned over after described n isolating transformer subelement is connected in series and be full of in the insulating sleeve of dielectric fluid.
After adopting such scheme, the present invention has following characteristics:
1. adopt isolating transformer technology, can fast and efficiently to high-pressure side load energy supply;
2. structure is simple, is easy to realize, and reliability is high.
Accompanying drawing explanation
Fig. 1 is that low pressure of the present invention is to high pressure power supply device overall structure figure.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is described in detail.
As shown in Figure 1, being the invention provides the preferred embodiment of a kind of low pressure to high pressure power supply device, forming by being positioned over after the individual isolating transformer subelement (5) of n (n >=2) is connected in series in 1 group of insulating sleeve (4).Wherein, 1-isolating transformer, 2-grading resistor, 3-equalizing capacitance, 4-insulating sleeve, 5-isolating transformer subelement, 6-high voltage bus, 7-energy supply load.
Isolating transformer subelement (5) of the present invention is made up of isolating transformer (1), grading resistor (2) and equalizing capacitance (3), wherein grading resistor (2) or equalizing capacitance (3) are not necessary, and visual actual conditions are cancelled.As insulating resistance value between isolating transformer (1) the former and deputy limit in n (n >=2) individual isolating transformer subelement (5) is close, the voltage's distribiuting after connecting on every one-level isolating transformer subelement (5) can be made all to press, be unlikely to cause isolating transformer subelement (5) excessive pressure damages, grading resistor (2) can not be added; Equivalent capacity as one-level every after n (n >=2) individual isolating transformer subelement (5) series connection is close, every voltage order one distribution all can press under Impulse Voltage, be unlikely to cause isolating transformer subelement (5) excessive pressure damages, equalizing capacitance (3) can not be added.
The individual isolating transformer subelement (5) of n of the present invention (n >=2), wherein in the 1st grade of subelement, the former limit of isolating transformer (1) connects low pressure energising power, its secondary connects the former limit of isolating transformer (1) in the 2nd grade of subelement, is connected in series with this.In final n-th grade of subelement, the former limit of isolating transformer (1) connects the secondary of isolating transformer in (n-1)th grade of subelement, and the one-level tap of its secondary is connected to high-voltage charged body (6), obtains high potential.If high-voltage charged body (6) voltage is 200kV, then the voltage that each isolating transformer subelement (5) is born is 200/n (kV).
Low pressure of the present invention connects energy supply load (7) to the secondary of the isolating transformer (1) in n-th grade of isolating transformer subelement (5) of high pressure power supply device, thus makes energy supply load (7) be in high potential.Because energy supply load (7) has also been in high potential, the potential difference therefore between itself and high-pressure side charged object reduces greatly, thus solves voltage isolation problem.
In isolating transformer subelement (5) of the present invention, the no-load voltage ratio of isolating transformer (1) designs according to the requirement of energy supply load (7).Voltage request as energy supply load (7) is 1000V, in 1st grade of isolating transformer subelement, the former limit input voltage of isolating transformer (1) is 220V, then n (n >=2) individual isolating transformer subelement (5) be connected in series after total no-load voltage ratio be 220:1000.
Between the former limit that in isolating transformer subelement (5) of the present invention, grading resistor (2) is connected in parallel on its isolating transformer (1) and secondary.Grading resistor (2) plays the effect of static state voltage equipoise, and when guaranteeing normally to work, the voltage's distribiuting of every one-level isolating transformer subelement (5) is all pressed.
Between the former limit that in isolating transformer subelement (5) of the present invention, equalizing capacitance (3) is connected in parallel on its isolating transformer (1) and secondary.Equalizing capacitance (3) plays the effect of dynamic voltage balancing, guarantees that the voltage's distribiuting of every one-level isolating transformer subelement (5) when invaded by surge voltage is all pressed.
Be positioned over after the individual isolating transformer subelement (5) of n of the present invention (n >=2) is connected in series in the insulating sleeve (4) being full of fluid, to improve the external insulation tolerance of device.It is insulating gas or liquid that fluid fills in institute, the withstand voltage level after raising n (n >=2) individual isolating transformer subelement (5) is connected in series.
According to specific exemplary embodiment, invention has been described herein.It will be apparent under not departing from the scope of the present invention, carrying out suitable replacement to one skilled in the art or revise.Exemplary embodiment is only illustrative, instead of the restriction to scope of the present invention, and scope of the present invention has appended claim definition.
Claims (9)
1. low pressure is to a high pressure power supply device, it is characterized in that, forms, wherein n >=2 by being positioned in 1 group of insulating sleeve after n isolating transformer subelement is connected in series.
2. a kind of low pressure as claimed in claim 1 is to high pressure power supply device, it is characterized in that:
Described isolating transformer subelement is made up of isolating transformer.
3. a kind of low pressure as claimed in claim 2 is to high pressure power supply device, it is characterized in that: described isolating transformer subelement also comprises grading resistor and equalizing capacitance.
4. a kind of low pressure as claimed in claim 2 or claim 3 is to high pressure power supply device, it is characterized in that:
N described isolating transformer subelement, wherein in the 1st grade of subelement, the former limit of isolating transformer connects low pressure energising power, and its secondary connects the former limit of isolating transformer in the 2nd grade of subelement, is sequentially connected in series; In final n-th grade of subelement, the former limit of isolating transformer connects the secondary of isolating transformer in (n-1)th grade of subelement, and one end tap of its secondary is connected to high-voltage charged body, makes power supply device obtain high potential.
5. a kind of low pressure as claimed in claim 2 or claim 3 is to high pressure power supply device, it is characterized in that:
Described low pressure connects energy supply load to the secondary of the isolating transformer in n-th grade of isolating transformer subelement of high pressure power supply device, thus makes energy supply load be in high potential.
6. a kind of low pressure as claimed in claim 5 is to high pressure power supply device, it is characterized in that:
In described isolating transformer subelement, the no-load voltage ratio of isolating transformer designs according to for portative requirement, concrete finger: as supplied portative voltage request to be u2, in 1st grade of isolating transformer subelement, the former limit input voltage of isolating transformer is u1, then n isolating transformer subelement be connected in series after total no-load voltage ratio be u1:u2.
7. a kind of low pressure as claimed in claim 3 is to high pressure power supply device, it is characterized in that:
Grading resistor in described isolating transformer subelement is connected in parallel between the former limit of its isolating transformer and secondary.
8. a kind of low pressure as claimed in claim 3 is to high pressure power supply device, it is characterized in that:
Equalizing capacitance in described isolating transformer subelement is connected in parallel between the former limit of its isolating transformer and secondary.
9. a kind of low pressure as claimed in claim 1 is to high pressure power supply device, it is characterized in that:
Be positioned over after described n isolating transformer subelement is connected in series and be full of in the insulating sleeve of dielectric fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410387131.XA CN105337506A (en) | 2014-08-07 | 2014-08-07 | Energy supply device from low voltage to high voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410387131.XA CN105337506A (en) | 2014-08-07 | 2014-08-07 | Energy supply device from low voltage to high voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105337506A true CN105337506A (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410387131.XA Pending CN105337506A (en) | 2014-08-07 | 2014-08-07 | Energy supply device from low voltage to high voltage |
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| Country | Link |
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| CN (1) | CN105337506A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050009A (en) * | 2017-12-05 | 2018-05-18 | 华北电力大学 | A kind of high potential energy supplying system and its construction method based on insulating liquid driving |
| WO2018192291A1 (en) * | 2017-04-19 | 2018-10-25 | 南京南瑞继保电气有限公司 | Energy supply system and method |
| CN109215996A (en) * | 2018-09-19 | 2019-01-15 | 常州博瑞电力自动化设备有限公司 | A kind of energy supply transformer of isolation over the ground |
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| WO2007116444A1 (en) * | 2006-03-30 | 2007-10-18 | Fujitsu Limited | Power supply apparatus and power supply control method |
| CN101220792A (en) * | 2007-12-27 | 2008-07-16 | 国网武汉高压研究院 | Multi-pole ignition device of impulse voltage generator |
| RU2397495C1 (en) * | 2009-08-31 | 2010-08-20 | Федеральное государственное унитарное предприятие "Научно-производственное объединение автоматики имени академика Н.А. Семихатова" | Device for determining rotation frequency |
| CN203455389U (en) * | 2013-09-03 | 2014-02-26 | 北京豪锐达科技有限公司 | Simulation test stand for power transmission line insulator leakage current |
| CN203691250U (en) * | 2014-02-26 | 2014-07-02 | 中国工程物理研究院流体物理研究所 | Small-size high-voltage isolation transformer |
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2014
- 2014-08-07 CN CN201410387131.XA patent/CN105337506A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007116444A1 (en) * | 2006-03-30 | 2007-10-18 | Fujitsu Limited | Power supply apparatus and power supply control method |
| CN101220792A (en) * | 2007-12-27 | 2008-07-16 | 国网武汉高压研究院 | Multi-pole ignition device of impulse voltage generator |
| RU2397495C1 (en) * | 2009-08-31 | 2010-08-20 | Федеральное государственное унитарное предприятие "Научно-производственное объединение автоматики имени академика Н.А. Семихатова" | Device for determining rotation frequency |
| CN203455389U (en) * | 2013-09-03 | 2014-02-26 | 北京豪锐达科技有限公司 | Simulation test stand for power transmission line insulator leakage current |
| CN203691250U (en) * | 2014-02-26 | 2014-07-02 | 中国工程物理研究院流体物理研究所 | Small-size high-voltage isolation transformer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018192291A1 (en) * | 2017-04-19 | 2018-10-25 | 南京南瑞继保电气有限公司 | Energy supply system and method |
| CN108050009A (en) * | 2017-12-05 | 2018-05-18 | 华北电力大学 | A kind of high potential energy supplying system and its construction method based on insulating liquid driving |
| CN108050009B (en) * | 2017-12-05 | 2019-10-01 | 华北电力大学 | A kind of high potential energy supplying system and its construction method based on insulating liquid driving |
| CN109215996A (en) * | 2018-09-19 | 2019-01-15 | 常州博瑞电力自动化设备有限公司 | A kind of energy supply transformer of isolation over the ground |
| CN109215996B (en) * | 2018-09-19 | 2024-07-30 | 常州博瑞电力自动化设备有限公司 | Ground isolation energy supply transformer |
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Application publication date: 20160217 |
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