CN204424925U - For the energy storage type intelligent transformer of wind generator system - Google Patents
For the energy storage type intelligent transformer of wind generator system Download PDFInfo
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- CN204424925U CN204424925U CN201520140173.3U CN201520140173U CN204424925U CN 204424925 U CN204424925 U CN 204424925U CN 201520140173 U CN201520140173 U CN 201520140173U CN 204424925 U CN204424925 U CN 204424925U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 71
- 230000009466 transformation Effects 0.000 claims abstract description 39
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 22
- 238000004804 winding Methods 0.000 claims description 12
- 230000005611 electricity Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 235000006629 Prosopis spicigera Nutrition 0.000 description 1
- 240000000037 Prosopis spicigera Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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Abstract
The utility model discloses a kind of energy storage type intelligent transformer for wind generator system, comprise duplex frequency boostering transformer and three the single-phase energy storage type voltage transformation unit corresponding with the three-phase line of duplex frequency boostering transformer, single-phase energy storage type voltage transformation unit comprises low-pressure side single-phase full bridge power frequency DC-AC converter, low-pressure side single-phase full bridge high frequency DC-AC converter, bidirectional DC-DC converter, energy storage device, Multiple coil high frequency transformer, high-pressure side single-phase full bridge high frequency DC-AC converter and high-pressure side single-phase full bridge power frequency DC-AC converter, the quantity of high-pressure side single-phase full bridge high frequency DC-AC converter and high-pressure side single-phase full bridge power frequency DC-AC converter is more than one and mutual one_to_one corresponding, all high-pressure sides single-phase full bridge power frequency DC-AC converter is chain by two AC port successively cascade.The utility model not only can the power fluctuation of smooth wind power, but also can improve the low voltage ride-through capability of wind-powered electricity generation.
Description
Technical field
The utility model relates to technical field of wind power generation, is specifically related to a kind of energy storage type intelligent transformer for wind generator system.
Background technology
At present, wind power system institute facing challenges is mainly derived from two aspects: on the one hand, because wind energy resources has fluctuation, cause wind power output also to have fluctuation, this can produce larger negative effect to the quality of power supply of electrical network and stability thereof when wind-powered electricity generation penetrance is higher.On the other hand; along with wind-powered electricity generation proportion in electrical network constantly increases, if Wind turbines still takes the off-the-line mode of passive protection formula when grid collapses, then the recovery difficulty of whole system can be increased; even may aggravate fault, badly influence the safe operation of electrical network.For this reason, new network planning all requires when the grid collapses, grid connected wind power unit can both realize low voltage crossing and run within the scope of certain hour, and after failure removal, wind turbine generator can recover rapidly normal operation, normally works to help power system restoration.
Utility model content
The technical problems to be solved in the utility model is: for the problems referred to above of prior art, there is provided a kind of not only can the power fluctuation of smooth wind power, but also the energy storage type intelligent transformer for wind generator system of the low voltage ride-through capability of wind-powered electricity generation can be improved.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of energy storage type intelligent transformer for wind generator system, comprise three single-phase energy storage type voltage transformation unit of corresponding three-phase line respectively, described single-phase energy storage type voltage transformation unit comprises low-pressure side single-phase full bridge power frequency DC-AC converter, low-pressure side single-phase full bridge high frequency DC-AC converter, bidirectional DC-DC converter, energy storage device, Multiple coil high frequency transformer, high-pressure side single-phase full bridge high frequency DC-AC converter and high-pressure side single-phase full bridge power frequency DC-AC converter, the quantity of described high-pressure side single-phase full bridge high frequency DC-AC converter and high-pressure side single-phase full bridge power frequency DC-AC converter is more than one and one_to_one corresponding each other, an outlet terminal of described low-pressure side single-phase full bridge power frequency DC-AC converter AC port is connected with the outlet terminal of corresponding phase in wind turbine generator in wind generator system, another outlet terminal is then connected with the outlet terminal of duplex frequency boostering transformer low-pressure side correspondence phase in wind generator system, the DC port of described low-pressure side single-phase full bridge power frequency DC-AC converter is connected with the DC port of low-pressure side single-phase full bridge high frequency DC-AC converter, the AC port of described low-pressure side single-phase full bridge high frequency DC-AC converter is connected with the low-pressure side winding of Multiple coil high frequency transformer, described energy storage device is connected by the DC port of bidirectional DC-DC converter with low-pressure side single-phase full bridge power frequency DC-AC converter and low-pressure side single-phase full bridge high frequency DC-AC converter, the high-pressure side winding of described Multiple coil high frequency transformer is connected with the AC port of corresponding high-pressure side single-phase full bridge high frequency DC-AC converter respectively, the DC port of described high-pressure side single-phase full bridge high frequency DC-AC converter is connected with the DC port of corresponding high-pressure side single-phase full bridge power frequency DC-AC converter, connect in chain by two AC port successively cascade between all high-pressure side single-phase full bridge power frequency DC-AC converters, and first-in-chain(FIC) AC port outlet terminal is connected with the outlet terminal of the corresponding phase in duplex frequency boostering transformer high-pressure side in wind generator system, an outlet terminal of last-of-chain AC port is connected with the corresponding outlet terminal of last-of-chain in two other single-phase energy storage type voltage transformation unit.
Preferably, in an outlet terminal of described low-pressure side single-phase full bridge power frequency DC-AC converter AC port and wind generator system in wind turbine generator corresponding phase outlet terminal between be connected in series with the single-phase filter inductance of low-pressure side.
Preferably, in an outlet terminal of described first-in-chain(FIC) AC port and wind generator system the corresponding phase in duplex frequency boostering transformer high-pressure side outlet terminal between be connected in series with the single-phase filter inductance in high-pressure side.
Preferably, described energy storage device is ultracapacitor or storage battery.
Preferably, described low-pressure side single-phase full bridge power frequency DC-AC converter, low-pressure side single-phase full bridge high frequency DC-AC converter, high-pressure side single-phase full bridge high frequency DC-AC converter and high-pressure side single-phase full bridge power frequency DC-AC converter are the DC-AC converter based on full control switching device, and described bidirectional DC-DC converter is the bidirectional DC-DC converter based on full control switching device; Described full control switching device is the one in insulated gate bipolar translator power tube IGBT, integrated gate commutated thyristor IGCT and turn-off thyristor GTO.
The energy storage type intelligent transformer that the utility model is used for wind generator system has following advantage:
1, the utility model comprises three single-phase energy storage type voltage transformation unit of corresponding three-phase line respectively, described single-phase energy storage type voltage transformation unit comprises low-pressure side single-phase full bridge power frequency DC-AC converter, low-pressure side single-phase full bridge high frequency DC-AC converter, bidirectional DC-DC converter, energy storage device, Multiple coil high frequency transformer, high-pressure side single-phase full bridge high frequency DC-AC converter and high-pressure side single-phase full bridge power frequency DC-AC converter, control the operating state of low-pressure side single-phase full bridge power frequency DC-AC converter, can realize when electrical network generation Voltage Drop, namely when there is Voltage Drop in step-up transformer low voltage side, its voltage deviation amount of quick dynamic compensation, to ensure the voltage stabilization of Wind turbines outlet port, thus improve the low voltage ride-through capability of wind power system.
2, the utility model comprises three single-phase energy storage type voltage transformation unit of corresponding three-phase line respectively, described single-phase energy storage type voltage transformation unit comprises low-pressure side single-phase full bridge power frequency DC-AC converter, low-pressure side single-phase full bridge high frequency DC-AC converter, bidirectional DC-DC converter, energy storage device, Multiple coil high frequency transformer, high-pressure side single-phase full bridge high frequency DC-AC converter and high-pressure side single-phase full bridge power frequency DC-AC converter, by controlling the operating state of high-pressure side single-phase full bridge power frequency DC-AC converter, / idle the output of gaining merit controlling energy storage type intelligent transformer high pressure port can be realized, when electrical network normally runs, can the active power fluctuation of smooth wind power, when the grid collapses, certain reactive power can be provided normally to run to help power system restoration for electrical network.
3, the utility model comprises three single-phase energy storage type voltage transformation unit of corresponding three-phase line respectively, described single-phase energy storage type voltage transformation unit comprises low-pressure side single-phase full bridge power frequency DC-AC converter, low-pressure side single-phase full bridge high frequency DC-AC converter, bidirectional DC-DC converter, energy storage device, Multiple coil high frequency transformer, high-pressure side single-phase full bridge high frequency DC-AC converter and high-pressure side single-phase full bridge power frequency DC-AC converter, by controlling the operating state of bidirectional DC-DC converter, the active power that can control energy storage device exports, thus ensure the normal operation of the stable of DC bus-bar voltage and whole energy storage type intelligent transformer.
Accompanying drawing explanation
Fig. 1 is the circuit principle structure schematic diagram of the utility model embodiment.
Marginal data: 1, single-phase energy storage type voltage transformation unit; 11, low-pressure side single-phase full bridge power frequency DC-AC converter; 111, the single-phase filter inductance of low-pressure side; 12, low-pressure side single-phase full bridge high frequency DC-AC converter; 13, bidirectional DC-DC converter; 14, energy storage device; 15, Multiple coil high frequency transformer; 16, high-pressure side single-phase full bridge high frequency DC-AC converter; 17, high-pressure side single-phase full bridge power frequency DC-AC converter; 171, the single-phase filter inductance in high-pressure side; 2, wind turbine generator; 3, duplex frequency boostering transformer; 4, electrical network.
Embodiment
As shown in Figure 1, the wind generator system of application the present embodiment energy storage type intelligent transformer comprises wind turbine generator 2, duplex frequency boostering transformer 3 and electrical network 4, the high-pressure side of duplex frequency boostering transformer 3 is connected with electrical network 4, the energy storage type intelligent transformer of the present embodiment comprises three single-phase energy storage type voltage transformation unit 1(1#1 ~ 1#3 of corresponding three-phase line respectively, wherein the internal structure of 1#2,1#3 is all identical with 1#1, for the purpose of simplifying the description, thus do not repeat to draw its detailed internal configuration).
As shown in Figure 1, single-phase energy storage type voltage transformation unit 1 comprises low-pressure side single-phase full bridge power frequency DC-AC converter 11, low-pressure side single-phase full bridge high frequency DC-AC converter 12, bidirectional DC-DC converter 13, energy storage device 14, Multiple coil high frequency transformer 15, high-pressure side single-phase full bridge high frequency DC-AC converter 16 and high-pressure side single-phase full bridge power frequency DC-AC converter 17, and the quantity of high-pressure side single-phase full bridge high frequency DC-AC converter 16 and high-pressure side single-phase full bridge power frequency DC-AC converter 17 is more than one and one_to_one corresponding each other.The quantity of high-pressure side single-phase full bridge high frequency DC-AC converter 16 and high-pressure side single-phase full bridge power frequency DC-AC converter 17 is all carried out exemplary illustration with multiple (N >=3) by the present embodiment, certainly, the quantity of high-pressure side single-phase full bridge high frequency DC-AC converter 16 and high-pressure side single-phase full bridge power frequency DC-AC converter 17 also can adopt one or two as required, its principle is identical with the present embodiment, and therefore the quantity N of high-pressure side single-phase full bridge high frequency DC-AC converter 16 and high-pressure side single-phase full bridge power frequency DC-AC converter 17 can extend to N >=1.
In the present embodiment, an outlet terminal of low-pressure side single-phase full bridge power frequency DC-AC converter 11 AC port is connected with the outlet terminal of corresponding phase in wind turbine generator in wind generator system 2, another outlet terminal is then connected with the outlet terminal of duplex frequency boostering transformer in wind generator system 3 low-pressure side correspondence phase, the DC port of low-pressure side single-phase full bridge power frequency DC-AC converter 11 is connected with the DC port of low-pressure side single-phase full bridge high frequency DC-AC converter 12, the AC port of low-pressure side single-phase full bridge high frequency DC-AC converter 12 is connected with the low-pressure side winding of Multiple coil high frequency transformer 15.See Fig. 1, for single-phase energy storage type voltage transformation unit 1#1, an outlet terminal of low-pressure side single-phase full bridge power frequency DC-AC converter 11 AC port
b1with the outlet terminal of phase corresponding in wind turbine generator 2
aconnected, another outlet terminal
c1the then outlet terminal of corresponding phase with duplex frequency boostering transformer 3 low-pressure side
dbe connected, the DC port of low-pressure side single-phase full bridge power frequency DC-AC converter 11
jwith the DC port of low-pressure side single-phase full bridge high frequency DC-AC converter 12
kbe connected, the AC port of low-pressure side single-phase full bridge high frequency DC-AC converter 12
lwith the low-pressure side winding of Multiple coil high frequency transformer 15
mbe connected.It should be noted that, about said structure, single-phase energy storage type voltage transformation unit 1#2, single-phase energy storage type voltage transformation unit 1#3 with the similar of single-phase energy storage type voltage transformation unit 1#1, it is only the difference on corresponding not isopen road, therefore does not repeat them here.
In the present embodiment, energy storage device 14 is connected with the DC port of low-pressure side single-phase full bridge power frequency DC-AC converter 11 and low-pressure side single-phase full bridge high frequency DC-AC converter 12 by bidirectional DC-DC converter 13.See Fig. 1, still for single-phase energy storage type voltage transformation unit 1#1, the connectivity port of energy storage device 14
pwith the low-pressure side DC port of bidirectional DC-DC converter 13
obe connected, the high-pressure side DC port of bidirectional DC-DC converter 13
nthen with the DC port of low-pressure side single-phase full bridge power frequency DC-AC converter 11
jand the DC port of low-pressure side single-phase full bridge high frequency DC-AC converter 12
kbe connected.
In the present embodiment, the high-pressure side winding of Multiple coil high frequency transformer 15 is connected with the AC port of corresponding high-pressure side single-phase full bridge high frequency DC-AC converter 16 respectively, and the DC port of high-pressure side single-phase full bridge high frequency DC-AC converter 16 is connected with the DC port of corresponding high-pressure side single-phase full bridge power frequency DC-AC converter 17.See Fig. 1, still for single-phase energy storage type voltage transformation unit 1#1, the high-pressure side winding of Multiple coil high frequency transformer 15
q1~
qNrespectively with the AC port of corresponding high-pressure side single-phase full bridge high frequency DC-AC converter 16
r1~
rNbe connected, the DC port of high-pressure side single-phase full bridge high frequency DC-AC converter 16
s1~
sNwith the DC port of corresponding high-pressure side single-phase full bridge power frequency DC-AC converter 17
t1~
tNbe connected, such as, to the high-pressure side winding of Multiple coil high frequency transformer 15
q1, high-pressure side winding
q1with the AC port of the high-pressure side single-phase full bridge high frequency DC-AC converter 16 of correspondence
r1be connected, the DC port of corresponding high-pressure side single-phase full bridge high frequency DC-AC converter 16
s1then with the DC port of the high-pressure side single-phase full bridge power frequency DC-AC converter 17 of correspondence
t1be connected, all the other high-pressure side windings of Multiple coil high frequency transformer 15
q2 ~ qNsyndeton and the high-pressure side winding of Multiple coil high frequency transformer 15
q1syndeton similar, therefore not repeat them here.It should be noted that, about said structure, single-phase energy storage type voltage transformation unit 1#2, single-phase energy storage type voltage transformation unit 1#3 with the similar of single-phase energy storage type voltage transformation unit 1#1, it is only the difference on corresponding not isopen road, therefore equally also repeats no more at this.
In the present embodiment, the mode of H bridge cascade is adopted to connect between all high-pressure side single-phase full bridge power frequency DC-AC converters 17, namely connected in chain by two AC port successively cascade between all high-pressure side single-phase full bridge power frequency DC-AC converters 17, and first-in-chain(FIC) AC port outlet terminal is connected with the outlet terminal of the corresponding phase in duplex frequency boostering transformer in wind generator system 3 high-pressure side, an outlet terminal of last-of-chain AC port is connected with the corresponding outlet terminal of last-of-chain in two other single-phase energy storage type voltage transformation unit 1.See Fig. 1, still for single-phase energy storage type voltage transformation unit 1#1, connected in chain by two AC port successively cascade between N number of high-pressure side single-phase full bridge power frequency DC-AC converter 17, and by an outlet terminal of first-in-chain(FIC) AC port
u1with the outlet terminal of the corresponding phase in duplex frequency boostering transformer 3 high-pressure side
gbe connected, an outlet terminal of last-of-chain AC port
f1with two other single-phase energy storage type voltage transformation unit 1(single-phase energy storage type voltage transformation unit 1#2 and single-phase energy storage type voltage transformation unit 1#3) the corresponding outlet terminal of last-of-chain AC port
f2, f3be connected.
In the present embodiment, in an outlet terminal of low-pressure side single-phase full bridge power frequency DC-AC converter 11 AC port and wind turbine generator 2 corresponding phase outlet terminal between be connected in series with the single-phase filter inductance 111 of low-pressure side.See Fig. 1, still for single-phase energy storage type voltage transformation unit 1#1, the outlet terminal of low-pressure side single-phase full bridge power frequency DC-AC converter 11 AC port
h1with the outlet terminal of phase corresponding in wind turbine generator 2
athe single-phase filter inductance 111 of low-pressure side is connected in series with, the outlet terminal of low-pressure side single-phase full bridge power frequency DC-AC converter 11 AC port between being connected
h1by forming the outlet terminal be used for corresponding phase in wind turbine generator 2 after the single-phase filter inductance of series connection low-pressure side 111
athe total outlet terminal be connected
b1.It should be noted that, about said structure, single-phase energy storage type voltage transformation unit 1#2, single-phase energy storage type voltage transformation unit 1#3 with the similar of single-phase energy storage type voltage transformation unit 1#1, it is only the difference on corresponding not isopen road, therefore does not repeat them here.
In the present embodiment, between the outlet terminal of the corresponding phase of an outlet terminal of first-in-chain(FIC) AC port and duplex frequency boostering transformer 3 high-pressure side, be connected in series with the single-phase filter inductance 171 in high-pressure side.See Fig. 1, still for single-phase energy storage type voltage transformation unit 1#1, the outlet terminal of first-in-chain(FIC) AC port
u1with the outlet terminal of the corresponding phase in duplex frequency boostering transformer 3 high-pressure side
gbetween be connected in series with the single-phase filter inductance 171 in high-pressure side, the outlet terminal of high-pressure side single-phase full bridge power frequency DC-AC converter 17 AC port
u1by forming the outlet terminal being used for the corresponding phase with duplex frequency boostering transformer 3 high-pressure side after the single-phase filter inductance 171 in tandem high pressure side
gthe total outlet terminal be connected
e1.It should be noted that, about said structure, single-phase energy storage type voltage transformation unit 1#2, single-phase energy storage type voltage transformation unit 1#3 with the similar of single-phase energy storage type voltage transformation unit 1#1, it is only the difference on corresponding not isopen road, therefore does not repeat them here.
In the present embodiment, energy storage device 14 can adopt ultracapacitor or storage battery as required.
In the present embodiment, low-pressure side single-phase full bridge power frequency DC-AC converter 11, low-pressure side single-phase full bridge high frequency DC-AC converter 12, high-pressure side single-phase full bridge high frequency DC-AC converter 16 and high-pressure side single-phase full bridge power frequency DC-AC converter 17 are the DC-AC converter based on full control switching device, and bidirectional DC-DC converter 13 is the bidirectional DC-DC converter based on full control switching device; Full control switching device can adopt the one in insulated gate bipolar translator power tube IGBT, integrated gate commutated thyristor IGCT and turn-off thyristor GTO as required.Adjustment low-pressure side single-phase full bridge power frequency DC-AC converter 11, low-pressure side single-phase full bridge high frequency DC-AC converter 12, high-pressure side single-phase full bridge high frequency DC-AC converter 16, the operating state of high-pressure side single-phase full bridge power frequency DC-AC converter 17 and bidirectional DC-DC converter 13, be adjustment low-pressure side single-phase full bridge power frequency DC-AC converter 11, low-pressure side single-phase full bridge high frequency DC-AC converter 12, high-pressure side single-phase full bridge high frequency DC-AC converter 16, the operating state of full control switching device in high-pressure side single-phase full bridge power frequency DC-AC converter 17 and bidirectional DC-DC converter 13.
The above is only preferred implementation of the present utility model, protection range of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (5)
1. the energy storage type intelligent transformer for wind generator system, it is characterized in that: three the single-phase energy storage type voltage transformation unit (1) comprising corresponding three-phase line respectively, described single-phase energy storage type voltage transformation unit (1) comprises low-pressure side single-phase full bridge power frequency DC-AC converter (11), low-pressure side single-phase full bridge high frequency DC-AC converter (12), bidirectional DC-DC converter (13), energy storage device (14), Multiple coil high frequency transformer (15), high-pressure side single-phase full bridge high frequency DC-AC converter (16) and high-pressure side single-phase full bridge power frequency DC-AC converter (17), the quantity of described high-pressure side single-phase full bridge high frequency DC-AC converter (16) and high-pressure side single-phase full bridge power frequency DC-AC converter (17) is more than one and one_to_one corresponding each other, an outlet terminal of described low-pressure side single-phase full bridge power frequency DC-AC converter (11) AC port is connected with the outlet terminal of corresponding phase in wind turbine generator in wind generator system (2), another outlet terminal is then connected with the outlet terminal of duplex frequency boostering transformer in wind generator system (3) low-pressure side correspondence phase, the DC port of described low-pressure side single-phase full bridge power frequency DC-AC converter (11) is connected with the DC port of low-pressure side single-phase full bridge high frequency DC-AC converter (12), the AC port of described low-pressure side single-phase full bridge high frequency DC-AC converter (12) is connected with the low-pressure side winding of Multiple coil high frequency transformer (15), described energy storage device (14) is connected by the DC port of bidirectional DC-DC converter (13) with low-pressure side single-phase full bridge power frequency DC-AC converter (11) and low-pressure side single-phase full bridge high frequency DC-AC converter (12), the high-pressure side winding of described Multiple coil high frequency transformer (15) is connected with the AC port of corresponding high-pressure side single-phase full bridge high frequency DC-AC converter (16) respectively, the DC port of described high-pressure side single-phase full bridge high frequency DC-AC converter (16) is connected with the DC port of corresponding high-pressure side single-phase full bridge power frequency DC-AC converter (17), connect in chain by two AC port successively cascade between all high-pressure sides single-phase full bridge power frequency DC-AC converter (17), and first-in-chain(FIC) AC port outlet terminal is connected with the outlet terminal of the corresponding phase in duplex frequency boostering transformer in wind generator system (3) high-pressure side, an outlet terminal of last-of-chain AC port is connected with the corresponding outlet terminal of last-of-chain AC port in two other single-phase energy storage type voltage transformation unit (1).
2. the energy storage type intelligent transformer for wind generator system according to claim 1, is characterized in that: in an outlet terminal of described low-pressure side single-phase full bridge power frequency DC-AC converter (11) AC port and wind generator system in wind turbine generator (2) corresponding phase outlet terminal between be connected in series with the single-phase filter inductance of low-pressure side (111).
3. the energy storage type intelligent transformer for wind generator system according to claim 2, is characterized in that: in an outlet terminal of described first-in-chain(FIC) AC port and wind generator system the corresponding phase in duplex frequency boostering transformer (3) high-pressure side outlet terminal between be connected in series with the single-phase filter inductance in high-pressure side (171).
4. the energy storage type intelligent transformer for wind generator system according to claim 3, is characterized in that: described energy storage device (14) is ultracapacitor or storage battery.
5. according to the energy storage type intelligent transformer for wind generator system in Claims 1 to 4 described in any one, it is characterized in that: described low-pressure side single-phase full bridge power frequency DC-AC converter (11), low-pressure side single-phase full bridge high frequency DC-AC converter (12), high-pressure side single-phase full bridge high frequency DC-AC converter (16) and high-pressure side single-phase full bridge power frequency DC-AC converter (17) are the DC-AC converter based on full control switching device, described bidirectional DC-DC converter (13) is the bidirectional DC-DC converter based on full control switching device; Described full control switching device is the one in insulated gate bipolar translator power tube IGBT, integrated gate commutated thyristor IGCT and turn-off thyristor GTO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520140173.3U CN204424925U (en) | 2015-03-12 | 2015-03-12 | For the energy storage type intelligent transformer of wind generator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520140173.3U CN204424925U (en) | 2015-03-12 | 2015-03-12 | For the energy storage type intelligent transformer of wind generator system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204424925U true CN204424925U (en) | 2015-06-24 |
Family
ID=53475254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520140173.3U Withdrawn - After Issue CN204424925U (en) | 2015-03-12 | 2015-03-12 | For the energy storage type intelligent transformer of wind generator system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204424925U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734187A (en) * | 2015-03-12 | 2015-06-24 | 国家电网公司 | Energy storage type intelligent transformer for wind power generation system |
-
2015
- 2015-03-12 CN CN201520140173.3U patent/CN204424925U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734187A (en) * | 2015-03-12 | 2015-06-24 | 国家电网公司 | Energy storage type intelligent transformer for wind power generation system |
| CN104734187B (en) * | 2015-03-12 | 2017-03-22 | 国家电网公司 | Energy storage type intelligent transformer for wind power generation system |
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