CN203287458U - Heavy current experimental platform for double-fed wind power converter - Google Patents
Heavy current experimental platform for double-fed wind power converter Download PDFInfo
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- CN203287458U CN203287458U CN2013203599379U CN201320359937U CN203287458U CN 203287458 U CN203287458 U CN 203287458U CN 2013203599379 U CN2013203599379 U CN 2013203599379U CN 201320359937 U CN201320359937 U CN 201320359937U CN 203287458 U CN203287458 U CN 203287458U
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Abstract
The utility model provides a heavy current experimental platform for a double-fed wind power converter. The heavy current experimental platform comprises a double-fed wind power converter, a 380V/690V boosting transformer and a direct current power supply unit, and is characterized in that a power grid, the double-fed wind power converter, the 380V/690V boosting transformer and the direct current power supply unit form a closable loop, the double-fed wind power converter consists of a precharging loop, a direct current bus capacitor, a grid-side converter and a machine-side converter, a grid-side three-phase reactor is connected to the grid-side converter in a Y-shaped manner, a machine-side three-phase reactor is connected to the machine-side converter in a Y-shaped manner, the grid-side and the machine-side converters are connected with the reactors as loads, during an experiment, heavy current is generated inside the machine-side and the grid-side converters, and the performance of a power module, the reactors and a radiating system under rated current is tested. A test by this method is small in loss, the required power of the direct current power supply unit is small, the requirement of a heavy current experiment is satisfied, and the cost is low.
Description
Technical field
The utility model relates to wind power generation field, specifically the large electric current experiment porch of a kind of double-fed wind generator current transformer.
Background technology
Along with the attention of country to regenerative resource, the wind-power electricity generation industry has also obtained significant progress.As the core technology of wind-power electricity generation, wind electric converter is also progressively realized production domesticization.
Different according to the generator of selecting, wind electric converter is divided into direct-drive type and double-fed type.Native system is directed to double-fed wind generator current transformer (hereinafter to be referred as current transformer).
In the process of the design of current transformer, exploitation, formation product, must carry out high-power experiment to current transformer.During the operation of the little electric current of current transformer, can't embody its characteristic when high-power, so current transformer must carry out large electric current experiment.During large electric current experiment, can test current transformator power module and whether can move by long time stability when large electric current; Can test the temperature rise of current transformer IGBT whether in designing requirement; Can test the current transformer cooling system and whether meet designing requirement etc.So current transformer producer must have large electric current experiment porch.
The utility model content
The utility model provides a kind of double-fed wind generator current transformer large electric current experiment porch, and its cost is low, and method is simple, meets large electric current requirement of experiment.
the technical solution of the utility model: the large electric current experiment porch of described a kind of double-fed wind generator current transformer, comprise the double-fed wind generator current transformer, 380V/690V step-up transformer and dc power supply unit, it is characterized in that: electrical network, the double-fed wind generator current transformer, but 380V/690V step-up transformer and dc power supply unit form closed-loop path, described double-fed wind generator current transformer is by the precharge loop, dc-link capacitance, net side converter and pusher side current transformer form, net side three-phase reactor adopts the Y shape mode to be connected on the net side converter, the pusher side three-phase reactor adopts the Y shape mode to be connected on the pusher side current transformer, described 380V/690V step-up transformer input end is connected with electrical network, output terminal is connected by contactor KP1 with the precharge loop in the double-fed wind generator current transformer, the dc power supply unit input end is connected with electrical network, output terminal is connected by contactor KP2 with the dc-link capacitance in the double-fed wind generator current transformer, the precharge loop directly is connected with dc-link capacitance.
Described dc power supply unit is comprised of 380V/880V step-up transformer, current-limiting resistance and rectifier bridge.
The reactance of described net side three-phase reactor is 430 μ H, and the reactance of pusher side three-phase reactor is 450 μ H.
technique effect of the present utility model: simple in structure, easy to operate, net side and pusher side current transformer connect respectively reactor as load, produce respectively large electric current during experiment in pusher side and net side converter, testing power module, reactor and the cooling system performance under rated power, due to network reactor, what move in the pusher side reactor is reactive current, without active power loss (only a small amount of impedance loss active power), so the test loss of this mode is little, required dc power supply unit power is little, meet the requirement of large electric current experiment, only need to adopt common components and parts, with low cost.
Description of drawings
Fig. 1 is integrated connection schematic diagram of the present utility model.
Number in the figure represents respectively: 1-double-fed wind generator current transformer, the 2-380V/690V step-up transformer, 3-dc power supply unit, 4-precharge loop, the 5-dc-link capacitance, 6-net side converter, 7-pusher side current transformer, 8-net side three-phase reactor, 9-pusher side three-phase reactor, the 31-380V/880V step-up transformer, 32-current-limiting resistance, 33-rectifier bridge.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further illustrated:
as shown in the figure, the large electric current experiment porch of described a kind of double-fed wind generator current transformer, comprise double-fed wind generator current transformer 1, 380V/690V step-up transformer 2 and dc power supply unit 3, it is characterized in that: electrical network, double-fed wind generator current transformer 1, but 380V/690V step-up transformer 2 and dc power supply unit 3 form closed-loop path, described double-fed wind generator current transformer 1 is by precharge loop 4, dc-link capacitance 5, net side converter 6 and pusher side current transformer 7 form, net side three-phase reactor 8 adopts the Y shape mode to be connected on net side converter 6, pusher side three-phase reactor 9 adopts the Y shape mode to be connected on pusher side current transformer 7, described 380V/690V step-up transformer 2 input ends are connected with electrical network, output terminal is connected by contactor KP1 with the precharge loop 4 in double-fed wind generator current transformer 1, dc power supply unit 3 input ends are connected with electrical network, output terminal is connected by contactor KP2 with the dc-link capacitance 5 in double-fed wind generator current transformer 1, precharge loop 4 directly is connected with dc-link capacitance 5.
Described dc power supply unit 3 is comprised of 380V/880V step-up transformer 31, current-limiting resistance 32 and rectifier bridge 33.
The reactance of described net side three-phase reactor 8 is 430 μ H, and the reactance of pusher side three-phase reactor 9 is 450 μ H.
When the utility model uses:
At first, program software detects the external signal non-fault, and closed KP1, charge to bus capacitor by the precharge loop; When software detection charges to 920V to dc-link capacitance, disconnect KP1, closed KP2, connect dc power supply unit, makes dc-link capacitance charge to 1150V; Secondly software startup net side converter, regulate the current on line side value to 400A; Then the starter motor side converter, regulate the pusher side electric current by vector controlled, makes it progressively to rise to 600A from 50A, and be stabilized in for a long time under this electric current.Then detect in real time the IGBT temperature rise, record temperature, whether whether observation meets design requirement, record simultaneously other parameters and meet design requirement.
The large electric current experiment porch of a kind of double-fed wind generator current transformer of the present utility model is simple in structure, easy to operate, reactive current due to what move in network reactor, pusher side reactor, without active power loss (only a small amount of impedance loss active power), so the test loss of this mode is little, required dc power supply unit power is little, only needs to adopt common components and parts, and is with low cost.
The above; it is only embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly belong to those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (3)
1. large electric current experiment porch of double-fed wind generator current transformer, comprise double-fed wind generator current transformer (1) and 380V/690V step-up transformer (2) and dc power supply unit (3), it is characterized in that: electrical network, double-fed wind generator current transformer (1), 380V/690V step-up transformer (2) and dc power supply unit (3) but form closed-loop path, described double-fed wind generator current transformer (1) is by precharge loop (4), dc-link capacitance (5), net side converter (6) and pusher side current transformer (7) form, net side three-phase reactor (8) adopts the Y shape mode to be connected on net side converter (6), pusher side three-phase reactor (9) adopts the Y shape mode to be connected on pusher side current transformer (7), described 380V/690V step-up transformer (2) input end is connected with electrical network, output terminal is connected by contactor KP1 with the precharge loop (4) in double-fed wind generator current transformer (1), dc power supply unit (3) input end is connected with electrical network, output terminal is connected by contactor KP2 with the dc-link capacitance (5) in double-fed wind generator current transformer (1), and precharge loop (4) directly are connected with dc-link capacitance (5).
2. the large electric current experiment porch of a kind of double-fed wind generator current transformer according to claim 1, it is characterized in that: described dc power supply unit (3) is comprised of 380V/880V step-up transformer (31), current-limiting resistance (32) and rectifier bridge (33).
3. the large electric current experiment porch of a kind of double-fed wind generator current transformer according to claim 1, it is characterized in that: the reactance of described net side three-phase reactor (8) is 430 μ H, the reactance of pusher side three-phase reactor (9) is 450 μ H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203599379U CN203287458U (en) | 2013-06-21 | 2013-06-21 | Heavy current experimental platform for double-fed wind power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203599379U CN203287458U (en) | 2013-06-21 | 2013-06-21 | Heavy current experimental platform for double-fed wind power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203287458U true CN203287458U (en) | 2013-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203599379U Expired - Lifetime CN203287458U (en) | 2013-06-21 | 2013-06-21 | Heavy current experimental platform for double-fed wind power converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN203287458U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199095A (en) * | 2016-07-25 | 2016-12-07 | 大连华锐重工集团股份有限公司 | Double-feed current transformer formula high-current generation device |
| CN109188156A (en) * | 2018-11-06 | 2019-01-11 | 威凡智能电气高科技有限公司 | A kind of high pressure direct screening energy accumulation current converter modular testing platform and test circuit |
| CN113484714A (en) * | 2021-07-27 | 2021-10-08 | 远景能源有限公司 | Current transformer test platform and test method |
| CN114221387A (en) * | 2022-01-27 | 2022-03-22 | 大连尚佳新能源科技有限公司 | Wind power converter simulation operation testing device |
-
2013
- 2013-06-21 CN CN2013203599379U patent/CN203287458U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199095A (en) * | 2016-07-25 | 2016-12-07 | 大连华锐重工集团股份有限公司 | Double-feed current transformer formula high-current generation device |
| CN109188156A (en) * | 2018-11-06 | 2019-01-11 | 威凡智能电气高科技有限公司 | A kind of high pressure direct screening energy accumulation current converter modular testing platform and test circuit |
| CN113484714A (en) * | 2021-07-27 | 2021-10-08 | 远景能源有限公司 | Current transformer test platform and test method |
| CN114221387A (en) * | 2022-01-27 | 2022-03-22 | 大连尚佳新能源科技有限公司 | Wind power converter simulation operation testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221228 Address after: 430070 4th floor, Beigang Village Industrial Park, No. 36, Shucheng Road, Hongshan District, Wuhan City, Hubei Province Patentee after: Three Gorges Zhikong Technology Co.,Ltd. Address before: 430070 No. 36 Bookstore Road, Hongshan District, Hubei, Wuhan Patentee before: THREE GORGES NENGSHIDA ELECTRIC Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |