CN102510225A - Method, device and experiment system for increasing output current of current rising device - Google Patents
Method, device and experiment system for increasing output current of current rising device Download PDFInfo
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- CN102510225A CN102510225A CN2011103332819A CN201110333281A CN102510225A CN 102510225 A CN102510225 A CN 102510225A CN 2011103332819 A CN2011103332819 A CN 2011103332819A CN 201110333281 A CN201110333281 A CN 201110333281A CN 102510225 A CN102510225 A CN 102510225A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002474 experimental method Methods 0.000 title abstract description 8
- 230000000630 rising effect Effects 0.000 title abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 230000004907 flux Effects 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 3
- 241000482268 Zea mays subsp. mays Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
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Abstract
The invention discloses a method, a device and an experiment system for increasing output current of a current rising device. The method includes connecting magnetic circuits of a plurality of preset current rising devices in parallel and increasing maximum output magnetic flux; and outputting current in cables connected with the plurality of preset current rising devices. By means of the method, the device and the experiment system, output voltage of the current rising devices can be increased by connecting the magnetic circuits of the current rising devices in parallel and increasing turns of series connection copper bars (series-parallel connection conversion) so as to achieve purposes of increasing current of cable operation. The method, the device and the experiment system have the advantages of being convenient to operate, high in space use rate of the current rising devices and capable of avoiding internal circulation and the like.
Description
Technical field
The present invention relates to improve the technology of output current, relate in particular to the method, device and the experimental system that improve the current lifting device output current.
Background technology
Current lifting device is a kind of current source as check usefulness, and low-voltage high-current power source when electrical equipment is done thermally-stabilised, moving stability test is like the temperature rise test of air circuit, contactor, relay and dropout etc.It has that power output is big, supplementary load loss are little, anti-overload ability is strong, easy to operate, clear reading, move characteristics such as flexible, is applicable to that the power system technology personnel check the usefulness of current transformer, protective device and secondary loop current test.
In experiments such as test cable temperature characterisitic,, need big electric current be provided for cable for the physical characteristic of test cable under big ampacity.Therefore, how on existing current lifting device basis, to improve the cable running current and become the problem that to accomplish outbalance in the big electric current experiment preliminary preparation smoothly.Current lifting device belongs to strong current generator, also is single-phase transformer, and main and voltage regulator is used.The output voltage of voltage regulator is exactly the input voltage of current lifting device, and output current also is the input current of current lifting device simultaneously.Stream, step-down up-flow fall in the current lifting device operation principle for boosting.The power of requirement load is equal to or less than the maximum power of current lifting device during use, and the rated power of current lifting device is equal to or less than the maximum power of voltage regulator.If the rated output voltage of current lifting device is not enough,, also can't export needed load current although the output-current rating of current lifting device is bigger than needed load current.So, how efficiently to utilize current lifting device to promote output current, become the common in the industry problem of paying close attention to.
In addition, the method for the parallelly connected current lifting device raising of existing utilization output current can cause inner circulation to produce unavoidablely.Concerning the design engineer, circulation can cause devastating disaster, and no matter your equipment is computer or communication system.And in the middle of the prior art, can adopt the current lifting device parallel connection identical of a plurality of capacity to avoid inner circulation with parameter, promptly electric parameter must just the samely just can reach the purpose of avoiding inner circulation.But even also can have problems such as instrumental error, source and earthing pop-corn between the current lifting device of specification of the same race, therefore inner circulation can't be avoided, and along with the electric current of current lifting device output is big more, the inside circulation of generation also can be big more.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides the method, device and the experimental system that improve the current lifting device output current, can improve the output current of current lifting device.
The invention provides the method that improves the current lifting device output current, comprising:
With the magnetic path parallel connection of preset several current lifting devices, improve the maximum flux of output;
With cable that said preset several current lifting devices link to each other in output current.
Correspondingly, the present invention also provides the device that improves the current lifting device output current, comprises preset several current lifting devices; The voltage regulator that links to each other with said current lifting device input; With the cable that said current lifting device output links to each other, the magnetic path parallel connection of said preset several current lifting devices connects, at said cable output current.
Correspondingly, the present invention also provides the experimental system of test cable temperature characterisitic, comprising: the device of foregoing raising current lifting device output current.
Embodiment of the present invention has following beneficial effect:
The present invention arrives through the capacity that makes full use of current lifting device itself and improves the experiment electric current.Magnetic circuit through parallelly connected current lifting device and the number of turn (connection in series-parallel conversion) that increases the series connection copper bar reach the purpose that improves the electric current that cable moves to improve the current lifting device output voltage.This patent has easy to operate, and current lifting device capacity utilance is high, avoids characteristics such as inner circulation.
Description of drawings
Fig. 1 is the circuit diagram of conventional parallel current lifting device;
Fig. 2 is the circuit diagram of the present invention's parallel connection current lifting device;
Fig. 3 is the experimental system sketch map of test cable temperature characterisitic of the present invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is done to describe in detail further below.
Fig. 1 is the circuit diagram of conventional parallel current lifting device; In order to reach the purpose of rising electric current, traditional way is directly the secondary winding of several current lifting devices to be carried out parallel connection, is equivalent to the power supply of several same specifications is together in parallel, for same load provides electric current.The mode of inner circulation is avoided in the current lifting device parallel connection that a plurality of capacity of this employing are identical with parameter, comes down in order to reach electric parameter just the same to avoid the purpose of inner circulation.But even also can have problems such as instrumental error, source and earthing pop-corn between the current lifting device of specification of the same race, therefore inner circulation can't be avoided, and along with the electric current of current lifting device output is big more, the inside circulation of generation also can be big more.
Be different from conventional art, the invention provides a kind of method that improves the current lifting device output current, comprising: will preset the magnetic path parallel connection of several current lifting devices, and improve the maximum flux of output; With cable that said preset several current lifting devices link to each other in output current.
Further; In order to strengthen the effect of output current; The present invention is at the magnetic path parallel connection that will preset several current lifting devices, improve after the step of maximum flux of output, with cable that said preset several current lifting devices link to each other in before the step of output current; Also comprise: between said preset several current lifting devices and said cable, the series connection copper bar.
Fig. 2 is the circuit diagram of the present invention's parallel connection current lifting device; Below in conjunction with Fig. 2, the present invention is done further detailed description.
The device of raising current lifting device output current as shown in Figure 2; Comprise preset several current lifting devices, the voltage regulator that links to each other with said current lifting device input, the cable that links to each other with said current lifting device output; The magnetic path parallel connection of said preset several current lifting devices connects, at said cable output current.
The present invention can improve the output current of current lifting device, and can avoid inner circulation, and wherein, the current lifting device of parallel connection is not limit by specification.The secondary winding of the current lifting device that prior art is directly identical with several specifications is carried out parallel connection; Though and the same employing of the present invention is the method for parallelly connected current lifting device; What but the present invention adopted is the method for parallel circuits, and the specified magnetic flux through increasing magnetic circuit is to reach the effect that improves the current lifting device power output.
Compare traditional method, parallel circuits and not parallelly connected secondary winding, by contrast; In the conventional parallel secondary winding; For fear of the inside circulation between the secondary winding of parallel connection, must adopt the current lifting device of same kind, promptly electric parameter must just the samely could arrive the purpose of avoiding inner circulation; Even also can have problems such as instrumental error and source and earthing pop-corn between the current lifting device of specification of the same race, therefore inner circulation can't be avoided.And the way of the magnetic circuit of parallelly connected current lifting device is equivalent to have only a transformer, does not therefore have the circulation phenomenon, and the current lifting device of different size is parallel connection simultaneously.
The device of raising current lifting device output current as shown in Figure 2 further, comprises the copper bar that is connected between said preset several current lifting devices and the said cable.
In order further to increase the utilance of current lifting device.The present invention improves the power output of current lifting device except the magnetic circuit through parallelly connected current lifting device; The present invention also is employed in the way of series connection copper bar between two parallelly connected current lifting devices to improve the rated output voltage of current lifting device; To reach the capacity that makes full use of current lifting device, improve the purpose of experiment electric current.
Fig. 3 is the experimental system sketch map of test cable temperature characterisitic of the present invention, comprising: the device of foregoing raising current lifting device output current.
In experimentation; Know as improving the magnitude of current that cable passes through by
, then the induced electromotive force
of necessary current lifting device secondary winding.
According to secondary winding voltage:
can know the relation that maximum flux
that the number of turn
and the current lifting device of induced electromotive force maximum and secondary winding allow to pass through is directly proportional; In the middle of the embodiment of the invention; Preferably; The maximum flux
that the method for two current lifting devices of employing parallel connection will allow to pass through is increased to original twice; Utilize the way of the copper bar of connecting with cable; Preferably; Adopting in the present embodiment increases by two circle copper bars, makes
increase to original 3 times.
To sum up two measures are not exceeding voltage regulator
BTCan make the secondary winding induced electromotive force under the situation of rated power
To original six times, promptly cable current can rise to original 6 times, so just can solve the problem that can't export needed load current because of the rated output voltage of current lifting device inadequately.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection range of the present invention.
Claims (5)
1. improve the method for current lifting device output current, it is characterized in that, comprising:
With the magnetic path parallel connection of preset several current lifting devices, improve the maximum flux of output;
With cable that said preset several current lifting devices link to each other in output current.
2. the method for raising current lifting device output current according to claim 1; It is characterized in that; At the said magnetic path parallel connection that will preset several current lifting devices; Improve after the step of maximum flux of output, said with cable that said preset several current lifting devices link to each other in before the step of output current, also comprise:
Between said preset several current lifting devices and said cable, the series connection copper bar.
3. improve the device of current lifting device output current; Comprise preset several current lifting devices, the voltage regulator that links to each other with said current lifting device input, the cable that links to each other with said current lifting device output; It is characterized in that: the magnetic path parallel connection of said preset several current lifting devices connects, at said cable output current.
4. the device of raising current lifting device output current according to claim 3 is characterized in that, comprises the copper bar that is connected between said preset several current lifting devices and the said cable.
5. the experimental system of test cable temperature characterisitic is characterized in that comprising: like the device of claim 3 or 4 described raising current lifting device output currents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103332819A CN102510225A (en) | 2011-10-28 | 2011-10-28 | Method, device and experiment system for increasing output current of current rising device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103332819A CN102510225A (en) | 2011-10-28 | 2011-10-28 | Method, device and experiment system for increasing output current of current rising device |
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| CN102510225A true CN102510225A (en) | 2012-06-20 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104750989A (en) * | 2015-03-25 | 2015-07-01 | 广州供电局有限公司 | Single-core cable transient state thermal circuit model conductor temperature calculating method and device |
| CN105827134A (en) * | 2015-12-25 | 2016-08-03 | 温州大学 | Multi-magnetic-circuit, low-voltage and large-current digital AC constant current source |
| CN107272806A (en) * | 2017-08-07 | 2017-10-20 | 哈尔滨理工大学 | The high-power VCCS of multitube parallel coupled using isolating transformer |
| CN107782935A (en) * | 2017-11-17 | 2018-03-09 | 国网辽宁省电力有限公司电力科学研究院 | A kind of current transformer flows up capacity extension device |
| CN109884570A (en) * | 2017-12-07 | 2019-06-14 | 广东电网有限责任公司东莞供电局 | an electronic booster |
| CN110907737A (en) * | 2019-12-10 | 2020-03-24 | 天津瑞能电气有限公司 | Testing device and testing method for current-carrying capacity of copper bar |
| CN111443323A (en) * | 2020-04-26 | 2020-07-24 | 国网福建省电力有限公司 | A 30000A Current Transformer Field Mobile Verification System |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0970172A (en) * | 1995-08-30 | 1997-03-11 | Shigeisa Imoto | Regulator |
-
2011
- 2011-10-28 CN CN2011103332819A patent/CN102510225A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0970172A (en) * | 1995-08-30 | 1997-03-11 | Shigeisa Imoto | Regulator |
Non-Patent Citations (1)
| Title |
|---|
| 刘刚，雷成华: "提高单芯电缆短时负荷载流量的试验分析", 《高压技术》, vol. 37, no. 5, 31 May 2011 (2011-05-31), pages 1288 - 1293 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104750989A (en) * | 2015-03-25 | 2015-07-01 | 广州供电局有限公司 | Single-core cable transient state thermal circuit model conductor temperature calculating method and device |
| CN105827134A (en) * | 2015-12-25 | 2016-08-03 | 温州大学 | Multi-magnetic-circuit, low-voltage and large-current digital AC constant current source |
| CN105827134B (en) * | 2015-12-25 | 2019-05-17 | 温州大学 | Multipath magnetic circuit low-voltage, high-current digital AC constant-current source |
| CN107272806A (en) * | 2017-08-07 | 2017-10-20 | 哈尔滨理工大学 | The high-power VCCS of multitube parallel coupled using isolating transformer |
| CN107782935A (en) * | 2017-11-17 | 2018-03-09 | 国网辽宁省电力有限公司电力科学研究院 | A kind of current transformer flows up capacity extension device |
| CN109884570A (en) * | 2017-12-07 | 2019-06-14 | 广东电网有限责任公司东莞供电局 | an electronic booster |
| CN110907737A (en) * | 2019-12-10 | 2020-03-24 | 天津瑞能电气有限公司 | Testing device and testing method for current-carrying capacity of copper bar |
| CN111443323A (en) * | 2020-04-26 | 2020-07-24 | 国网福建省电力有限公司 | A 30000A Current Transformer Field Mobile Verification System |
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Application publication date: 20120620 |