CN208369227U - The direct-flow distribution system of wind power generating set - Google Patents
The direct-flow distribution system of wind power generating set Download PDFInfo
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- CN208369227U CN208369227U CN201820838956.2U CN201820838956U CN208369227U CN 208369227 U CN208369227 U CN 208369227U CN 201820838956 U CN201820838956 U CN 201820838956U CN 208369227 U CN208369227 U CN 208369227U
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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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The utility model provides a kind of direct-flow distribution system of wind power generating set, comprising: high voltage dc bus；Grid-connected transformer, is connected to power grid；The output end of rectifier, generator and the rectifier that the input terminal of the rectifier is connected in the wind power generating set is connected to the high voltage dc bus；Inverter, the input terminal of the inverter is connected to the high voltage dc bus and the output end of the inverter is connected to the grid-connected transformer, exports later via the grid-connected transformer to power grid so that the DC voltage of the high voltage dc bus is converted to alternating voltage.The direct-flow distribution system of the wind power generating set of the utility model carries out power transmission by high voltage dc bus, to improve efficiency of transmission and effectively reduce the laying of cable.
Description
Technical field
The utility model all things considered is related to technical field of wind power, more particularly, is related to a kind of wind power generating set
Direct-flow distribution system.
Background technique
Wind power generating set is the unit equipment that the wind energy of acquisition is converted to electric energy.Traditional wind power generating set is matched
Electric system generallys use exchange way transmission electric energy, i.e., rectifier, inverter and network transformer is arranged at wind-power electricity generation
The tower bottom of unit, and electric energy is transmitted to by ac cable the cabin of wind power generating set from tower bottom, thus in cabin
Electrical equipment provides electric energy.
However, as the capacity of wind power generating set constantly increases, the impeller diameter and nacelle weight of wind power generating set
Also increasing, the power supply capacity demand in cabin also quicklys increase, this will cause ac cable diameter and increases, lays difficulty.
Also, the power supply in the cabin of wind power generating set and in tower bottom is it is possible that multiple voltage grade, this will lead to wind-force hair
Structure is complicated for the distribution system of motor group.
Utility model content
The purpose of this utility model is to provide a kind of direct-flow distribution system of wind power generating set with simple structure,
Power transmission is carried out by high voltage dc bus, to improve efficiency of transmission and effectively reduce the laying of cable.
The utility model provides a kind of direct-flow distribution system of wind power generating set, comprising: high voltage dc bus；Grid-connected change
Depressor is connected to power grid；Rectifier, the input terminal of the rectifier are connected to the generator in the wind power generating set and institute
The output end for stating rectifier is connected to the high voltage dc bus；Inverter, the input terminal of the inverter are connected to the height
The output end of pressure DC bus and the inverter is connected to the grid-connected transformer, thus by the straight of the high voltage dc bus
Galvanic electricity pressure is exported via the grid-connected transformer to power grid after being converted to alternating voltage.
Optionally, the direct-flow distribution system further include: whole from electricity consumption in the tower bottom of the wind power generating set
Device is flowed, the personal electric rectification device is connected between the grid-connected transformer and the high voltage dc bus, wherein when wind-force is sent out
When motor group is in not generating state, the personal electric rectification device receives alternating voltage from the grid-connected transformer, and will receive
To alternating voltage be converted into DC voltage and export to the high voltage dc bus.
Optionally, the rectifier is located in the cabin of the wind power generating set, and the inverter is located at the wind-force
In the tower bottom of generating set.
Optionally, the direct-flow distribution system further include: load, the load is received from the high voltage dc bus to supply
Electricity.
Optionally, the load includes: the first load in the cabin of the wind power generating set and is located at described
The second load in the tower bottom of wind power generating set.
Optionally, the direct-flow distribution system further include: the first low-voltage direct bus；First DC-DC converter, institute
The input terminal for stating the first DC-DC converter is connected to the high voltage dc bus and first DC-DC converter
Output end be connected to the first low-voltage direct bus, wherein it is described first load include: the first direct-current emergency load, from
The first low-voltage direct bus receives power supply, wherein first DC-DC converter and first low-voltage direct are female
Line is respectively positioned in the cabin of the wind power generating set.
Optionally, the direct-flow distribution system further include: the first ac bus；First AC/DC converter, described
The input terminal of one AC/DC converter is connected to the defeated of the high voltage dc bus and first AC/DC converter
Outlet is connected to first ac bus；First AC/DC converter, the input of first AC/DC converter
End is connected to first ac bus, wherein first load further include: the load of the first customary DC, from described first
The output end of AC/DC converter receives power supply；First AC load is received from first ac bus and is powered, wherein
First ac bus, first AC/DC converter and first AC/DC converter are respectively positioned on the wind
In the cabin of power generator group.
Optionally, the first low-voltage direct bus is received from the output end of first AC/DC converter and is powered.
Optionally, the direct-flow distribution system further include: the first energy storage in the cabin of the wind power generating set
Equipment, wherein first energy storage device is charged by the DC voltage of the first low-voltage direct bus, and works as institute
When stating wind power generating set and breaking down, first energy storage device is to the first low-voltage direct bussed supply.
Optionally, first load further include: high voltage direct current load, wherein the high voltage direct current is loaded from the height
DC bus is pressed to receive power supply.
Optionally, the direct-flow distribution system further include: the second low-voltage direct bus；Second DC-DC converter, institute
The input terminal for stating the second DC-DC converter is connected to the high voltage dc bus and second DC-DC converter
Output end be connected to the second low-voltage direct bus, wherein it is described second load include: the second direct-current emergency load, from
The second low-voltage direct bus receives power supply, wherein second DC-DC converter and second low-voltage direct are female
Line is respectively positioned in the tower bottom of the wind power generating set.
Optionally, the direct-flow distribution system further include: the second ac bus；Second AC/DC converter, described
The input terminal of two AC/DC converters is connected to the defeated of the high voltage dc bus and second AC/DC converter
Outlet is connected to second ac bus；Second AC/DC converter, the input of second AC/DC converter
End is connected to second ac bus, wherein second load further include: the load of the second customary DC, from described second
The output end of AC/DC converter receives power supply；Second AC load is received from second ac bus and is powered, wherein
Second ac bus, second AC/DC converter and second AC/DC converter are respectively positioned on the wind
In the tower bottom of power generator group.
Optionally, the second low-voltage direct bus is received from the output end of second AC/DC converter and is powered.
Optionally, the direct-flow distribution system further include: the second energy storage in the tower bottom of the wind power generating set
Equipment, wherein second energy storage device is charged by the DC voltage of the second low-voltage direct bus, and works as institute
When stating wind power generating set and breaking down, second energy storage device is to the second low-voltage direct bussed supply.
The direct-flow distribution system of the wind power generating set of the simplification of the utility model, rectifier and inverter are respectively set
Power transmission is carried out in the cabin and tower bottom of wind power generating set, and by high voltage dc bus, and efficiency of transmission is high and effectively
Reduce the laying of cable.It when wind power generating set breaks down, is powered by energy storage device, to assist the wind of failure
Power generator group completes low voltage crossing, significantly improves the fault-tolerance and reliability of emergency system.
Detailed description of the invention
By the detailed description carried out below in conjunction with the accompanying drawings, above and other objects, features and advantages of the utility model
It will become apparent, in which:
Fig. 1 shows the schematic diagram of the direct-flow distribution system of the wind power generating set of embodiment according to the present utility model；
Fig. 2 shows the detailed signals of the direct-flow distribution system of the wind power generating set of embodiment according to the present utility model
Figure.
Specific embodiment
Now, different example embodiments is more fully described with reference to the accompanying drawings, wherein some exemplary embodiments are attached
It is shown in figure.
The DC distribution system of the wind power generating set of embodiment according to the present utility model is described referring to Fig. 1 and Fig. 2
System.
Fig. 1 shows the schematic diagram of the direct-flow distribution system of the wind power generating set of embodiment according to the present utility model.
Referring to Fig.1, the direct-flow distribution system of the wind power generating set of embodiment according to the present utility model includes: high straightening
Flow bus 100, grid-connected transformer 102, rectifier 104 and inverter 108.
Grid-connected transformer 102 is connected to power grid.
Preferably, grid-connected transformer 102 is located in the tower bottom of wind power generating set.
The input terminal of rectifier 104 is connected to the generator 106 in wind power generating set and the output end of rectifier 104 connects
It is connected to high voltage dc bus 100, so that the alternating current (that is, alternating voltage) of rectifier self generator in 104 future 106 is rectified into directly
Galvanic electricity (that is, DC voltage) and be supplied to high voltage dc bus 100.
Preferably, rectifier 104 is located in the cabin of wind power generating set.
The input terminal of inverter 108 is connected to high voltage dc bus 100 and the output end of inverter 108 is connected to grid-connected change
Depressor 102, so that it is defeated via grid-connected transformer 102 later that the DC voltage of high voltage dc bus 100 is converted to alternating voltage
Out to power grid.
Preferably, inverter 108 is located in the tower bottom of wind power generating set.
When the electric energy that wind power generating set generates can satisfy the normal operation of wind power generating set, i.e. wind-driven generator
Group is in normal power generation state, and the input terminal of rectifier 104 receives alternating voltage from generator 106, and the alternating voltage is turned
Direct voltage output is changed into high voltage dc bus 100；The input terminal of inverter 108 receives this directly from high voltage dc bus 100
Galvanic electricity pressure, and the DC voltage is converted into alternating voltage and is exported to grid-connected transformer 102, grid-connected transformer 102 will be received
Alternating voltage is converted to the voltage output for meeting power grid demand to power grid.
As an example, can be 690 volts or 720 volts from the received alternating voltage of generator 106, high voltage dc bus 100 passes
Defeated DC voltage can be 1100 volts, and the alternating voltage that inverter 108 exports can be 690 volts, and the grid-connected output of transformer 102 is to electricity
The alternating voltage of net can be 10 kilovolts or 35 kilovolts.
In addition, the direct-flow distribution system can further include: the personal electric rectification device in the tower bottom of wind power generating set
110。
Personal electric rectification device 110 is connected between grid-connected transformer 102 and high voltage dc bus 100.Specifically, from electricity consumption
The input terminal of rectifier 110 connects grid-connected transformer 102, and the output end for electric rectification device 110 of using by oneself connects high voltage dc bus
100。
When wind power generating set is in not generating state, electric rectification device 110 of using by oneself is received from grid-connected transformer 102 to be exchanged
Voltage, and the alternating voltage received is converted into DC voltage and is exported to high voltage dc bus 100, to realize by power grid
It is powered, to guarantee the normal operation of wind power generating set.
That is, grid-connected transformer 102 receives alternating voltage from power grid, and exported after the alternating voltage is converted
To personal electric rectification device 110, personal electric rectification device 110 will be converted to direct current from the received alternating voltage of grid-connected transformer 102
Pressure output is to high voltage dc bus 100.
Rectifier 104 is set in the cabin of wind power generating set by the utility model, inverter 108 is set to wind-force hair
In the tower bottom of motor group, and power transmission is carried out by high voltage dc bus 100, efficiency of transmission is high and effectively reduces cable
Laying, to significantly reduce the cost of wind power generating set.
In addition, the direct-flow distribution system can further include: load 112.Load 112 is received from high voltage dc bus 100 and is powered.
Preferably, 112 are loaded can include: first in the cabin of wind power generating set loads 114 and be located at wind-force
The second load 116 in the tower bottom of generating set.
Fig. 2 shows the detailed signals of the direct-flow distribution system of the wind power generating set of embodiment according to the present utility model
Figure.
Referring to Fig. 2, the first load 114 can include: the first direct-current emergency loads the 122, first customary DC load 130, the
One AC load 132 and high voltage direct current load 136.
It should be appreciated that the example of above first load 114 is merely exemplary, the utility model is without being limited thereto.
For example, the first direct-current emergency load 122 can be pitch-controlled system, the first customary DC load 130 can be in cabin
PLC controller, the first AC load 132 can be the yaw motor in yaw system, and high voltage direct current load 136 can be deicing system
System.
As an example, the second load 116 can include: the second direct-current emergency loads the 142, second customary DC and loads 150 and
Second AC load 152.
It should be appreciated that the example of above second load 116 is merely exemplary, the utility model is without being limited thereto.
For example, the second customary DC load 150 can be the PLC controller in tower bottom, the second AC load 152 can be ventilation
Machine, dehumidifier, lighting system.
The process of power supply is received from high voltage dc bus 100 the following detailed description of the first load 114.
Preferably, high voltage direct current load 136 is received from high voltage dc bus 100 powers, and effectively reduces voltage conversion links.
In addition, the direct-flow distribution system can further include: the first low-voltage direct (LVDC) bus 118 and the first DC/DC
(DC/DC) converter 120.First low-voltage direct bus 118 and the first DC-DC converter 120 are respectively positioned on wind-driven generator
In the cabin of group.
The input terminal of first DC-DC converter 120 is connected to high voltage dc bus 100, the first DC/DC conversion
The output end of device 120 is connected to the first low-voltage direct bus 118；First direct-current emergency loads 122 from the first low-voltage direct bus
118 receive power supply.
That is, the first DC-DC converter 120 receives DC voltage from high voltage dc bus 100, and straight to this
Output is to the first low-voltage direct bus 118 after galvanic electricity pressure is converted；First low-voltage direct bus 118 is by received DC voltage
It exports to the first direct-current emergency load 122, to provide electric energy for the first direct-current emergency load 122.
As an example, the first DC-DC converter 120 receives 1100 volts of DC voltages from high voltage dc bus 100, and
1100 volts of DC voltages are converted into 60 volts or 24 volts of direct voltage outputs to the first low-voltage direct bus 118.Therefore, first
Direct-current emergency load 122 can receive 60 volts or 24 volts of DC voltages from the first low-voltage direct bus 118.For example, when the first direct current
When emergency load 122 is pitch-controlled system, which can receive 60 volts of DC voltages from the first low-voltage direct bus 118.
In addition, direct-flow distribution system can further include: the first ac bus 124, the first DC/AC (DC/AC) converter
126 and first ac/dc (AC/DC) converter 128.First ac bus 124, the first AC/DC converter 126 and
One AC/DC converter 128 is respectively positioned in the cabin of wind power generating set.
The input terminal of first AC/DC converter 126 is connected to high voltage dc bus 100, the conversion of the first DC/AC
The output end of device 126 is connected to the first ac bus 124；The input terminal of first AC/DC converter 128 is connected to the first friendship
Flow bus 124；First customary DC load 130 is received from the output end of the first AC/DC converter 128 powers.
That is, the first AC/DC converter 126 receives DC voltage from high voltage dc bus 100, and this is straight
Galvanic electricity pressure is converted to alternating voltage and exports to the first ac bus 124；First AC/DC converter 128 is exchanged from first
Bus 124 receives alternating voltage, and received alternating voltage is converted to direct voltage output and is loaded to the first customary DC
130。
First AC load 132 is received from the first ac bus 124 and is powered.
As an example, the alternating voltage of the first ac bus 124 transmission can be 400 volts.
Preferably, the first low-voltage direct bus 118 can be received from the first AC/DC converter 128 and be powered.Pass through first
AC/DC converter 128 to the first low-voltage direct bus 118 carry out floating charging, can be improved emergency system fault-tolerance and
Reliability plays the role of serving as uninterruptible power supply.
In addition, direct-flow distribution system can further include: the first energy storage device 134 in the cabin of wind power generating set.
First energy storage device 134 is charged by the DC voltage of the first low-voltage direct bus 118.
When wind power generating set breaks down, the first energy storage device 134 is powered to the first low-voltage direct bus 118.It should
First energy storage device 134 can help to absorb part excess energy, and wind power generating set is assisted to complete low voltage crossing (LVRT)
Function.
That is, the first energy storage is set when wind power generating set is in not generating state and power grid is in off-network state
Standby 134 are powered by the first low-voltage direct bus 118 to the first direct-current emergency load 122, to guarantee that the first direct-current emergency is negative
The normal operation for carrying 122, effectively improves the fault-tolerance and reliability of emergency system.
As an example, the first energy storage device 134 may include lithium battery, battery, rechargeable battery etc., the utility model pair
This is not construed as limiting.
The process of power supply is received from high voltage dc bus 100 the following detailed description of the second load 116.
Direct-flow distribution system can further include: the second low-voltage direct bus 138 and the second DC-DC converter 140.Second
DC-DC converter 140 and the second low-voltage direct bus 138 are respectively positioned in the tower bottom of wind power generating set.
The input terminal of second DC-DC converter 140 is connected to high voltage dc bus 100, the second DC/DC conversion
The output end of device 140 is connected to the second low-voltage direct bus 138；Second direct-current emergency loads 142 from the second low-voltage direct bus
138 receive power supply.
That is, the second DC-DC converter 140 receives DC voltage from high voltage dc bus 100, and straight to this
Output is to the second low-voltage direct bus 138 after galvanic electricity pressure is converted；Second low-voltage direct bus 138 is by received DC voltage
It exports to the second direct-current emergency load 142, to provide electric energy for the second direct-current emergency load 142.
In addition, direct-flow distribution system can further include: the second ac bus 144, the second AC/DC converter 146 and
Two AC/DC converters 148.Second ac bus 144, the second AC/DC converter 146 and the second ac/dc turn
Parallel operation 148 is respectively positioned in the tower bottom of wind power generating set.
The input terminal of second AC/DC converter 146 is connected to high voltage dc bus 100, the conversion of the second DC/AC
The output end of device 146 is connected to the second ac bus 144；The input terminal of second AC/DC converter 148 is connected to the second friendship
Bus 144 is flowed, the second customary DC load 150 is received from the output end of the second AC/DC converter 148 powers.
That is, the second AC/DC converter 146 receives DC voltage from high voltage dc bus 100, and this is straight
Galvanic electricity pressure is converted to alternating voltage and exports to the second ac bus 144；Second AC/DC converter 148 is female from the second exchange
Line 144 receives alternating voltage, and received alternating voltage is converted to direct voltage output to the second customary DC load 150.
Second AC load 152 is received from the second ac bus 144 and is powered.
As an example, the alternating voltage of the second ac bus 144 transmission can be 400 volts.
Preferably, the second low-voltage direct bus 138 is received from the output end of the second AC/DC converter 148 and is powered.It is logical
It crosses the second AC/DC converter 148 and floating charging is carried out to the second low-voltage direct bus 138, the appearance of emergency system can be improved
Mistake and reliability play the role of serving as uninterruptible power supply.
In addition, direct-flow distribution system can further include: the second energy storage device 154 in the tower bottom of wind power generating set.
Second energy storage device 154 is charged by the DC voltage of the second low-voltage direct bus 138.
When wind power generating set breaks down, the second energy storage device 154 is powered to the second low-voltage direct bus 138.It should
Second energy storage device 154 can help to absorb part excess energy, and wind power generating set is assisted to complete low voltage crossing (LVRT)
Function.
That is, the second energy storage is set when wind power generating set is in not generating state and power grid is in off-network state
Standby 154 are powered by the second low-voltage direct bus 138 to the second direct-current emergency load 142, to guarantee that the second direct-current emergency is negative
The normal operation for carrying 142, effectively improves the fault-tolerance and reliability of emergency system.
As an example, the second energy storage device 154 may include lithium battery, battery, rechargeable battery etc., the utility model pair
This is not construed as limiting.
In addition, in the direct-flow distribution system positioned at wind power generating set cabin in element be located at wind power generating set
Tower bottom in element have height interchangeability.
The direct-flow distribution system of the wind power generating set of the simplification of the utility model, rectifier and inverter are respectively set
Power transmission is carried out in the cabin and tower bottom of wind power generating set, and by high voltage dc bus, and efficiency of transmission is high and effectively
Reduce the laying of cable.It when wind power generating set breaks down, is powered by energy storage device, to assist the wind of failure
Power generator group completes low voltage crossing, significantly improves the fault-tolerance and reliability of emergency system.
Although being particularly shown and describing the utility model referring to its exemplary embodiment, the technology of this field
Personnel, can be to it should be understood that in the case where not departing from the spirit and scope of the utility model defined by claim
It carries out various changes of form and details.
Claims (13)
1. a kind of direct-flow distribution system of wind power generating set characterized by comprising
High voltage dc bus (100)；
Grid-connected transformer (102), is connected to power grid；
Rectifier (104), the input terminal of the rectifier (104) are connected to the generator (106) in the wind power generating set
And the output end of the rectifier (104) is connected to the high voltage dc bus (100)；
The input terminal of inverter (108), the inverter (108) is connected to the high voltage dc bus (100) and the inversion
The output end of device (108) is connected to the grid-connected transformer (102), thus by the direct current of the high voltage dc bus (100)
Pressure is exported via the grid-connected transformer (102) to power grid after being converted to alternating voltage,
Wherein, the rectifier (104) is located in the cabin of the wind power generating set, and the inverter (108) is located at described
In the tower bottom of wind power generating set.
2. direct-flow distribution system as described in claim 1, which is characterized in that the direct-flow distribution system further include: be located at institute
The personal electric rectification device (110) in the tower bottom of wind power generating set is stated, the personal electric rectification device (110) is connected to described grid-connected
Between transformer (102) and the high voltage dc bus (100),
Wherein, when wind power generating set is in not generating state, the personal electric rectification device (110) is from the grid-connected transformer
(102) alternating voltage is received, and the alternating voltage received is converted into DC voltage and is exported to the high voltage dc bus
(100)。
3. the direct-flow distribution system as described in any one in claim 1 to 2, which is characterized in that the DC distribution system
System further include: load (112), the load (112) receive from the high voltage dc bus (100) and power.
4. direct-flow distribution system as claimed in claim 3, which is characterized in that the load (112) includes: positioned at the wind-force
The first load (114) in the cabin of generating set and the second load (116) in the tower bottom of the wind power generating set.
5. direct-flow distribution system as claimed in claim 4, which is characterized in that the direct-flow distribution system further include:
First low-voltage direct bus (118)；
The input terminal of first DC-DC converter (120), first DC-DC converter (120) is connected to the height
It is female that the output end of pressure DC bus (100) and first DC-DC converter (120) is connected to first low-voltage direct
Line (118),
Wherein, first load (114) includes: the first direct-current emergency load (122), from the first low-voltage direct bus
(118) power supply is received,
Wherein, first DC-DC converter (120) and the first low-voltage direct bus (118) are respectively positioned on the wind
In the cabin of power generator group.
6. direct-flow distribution system as claimed in claim 5, which is characterized in that the direct-flow distribution system further include:
First ac bus (124)；
The input terminal of first AC/DC converter (126), first AC/DC converter (126) is connected to the height
The output end of pressure DC bus (100) and first AC/DC converter (126) is connected to first ac bus
(124)；
First AC/DC converter (128), the input terminal of first AC/DC converter (128) are connected to described
One ac bus (124),
Wherein, first load (114) further include:
First customary DC loads (130), receives and powers from the output end of first AC/DC converter (128)；
First AC load (132) is received from first ac bus (124) and is powered,
Wherein, first ac bus (124), first AC/DC converter (126) exchange with described first/it is straight
Stream transformer (128) is respectively positioned in the cabin of the wind power generating set.
7. direct-flow distribution system as claimed in claim 6, which is characterized in that the first low-voltage direct bus (118) is from institute
The output end for stating the first AC/DC converter (128) receives power supply.
8. direct-flow distribution system as claimed in claim 7, which is characterized in that the direct-flow distribution system further include: be located at institute
The first energy storage device (134) in the cabin of wind power generating set is stated,
Wherein, first energy storage device (134) is filled by the DC voltage of the first low-voltage direct bus (118)
Electricity,
And when the wind power generating set breaks down, first energy storage device (134) is to first low-voltage direct
Bus (118) power supply.
9. direct-flow distribution system as claimed in claim 4, which is characterized in that first load (114) further include: high straightening
Current load (136),
Wherein, the high voltage direct current load (136) receives from the high voltage dc bus (100) powers.
10. direct-flow distribution system as claimed in claim 4, which is characterized in that the direct-flow distribution system further include:
Second low-voltage direct bus (138)；
The input terminal of second DC-DC converter (140), second DC-DC converter (140) is connected to the height
It is female that the output end of pressure DC bus (100) and second DC-DC converter (140) is connected to second low-voltage direct
Line (138),
Wherein, second load (116) includes: the second direct-current emergency load (142), from the second low-voltage direct bus
(138) power supply is received,
Wherein, second DC-DC converter (140) and the second low-voltage direct bus (138) are respectively positioned on the wind
In the tower bottom of power generator group.
11. direct-flow distribution system as claimed in claim 10, which is characterized in that the direct-flow distribution system further include:
Second ac bus (144)；
The input terminal of second AC/DC converter (146), second AC/DC converter (146) is connected to the height
The output end of pressure DC bus (100) and second AC/DC converter (146) is connected to second ac bus
(144)；
Second AC/DC converter (148), the input terminal of second AC/DC converter (148) are connected to described
Two ac bus (144),
Wherein, second load (116) further include:
Second customary DC loads (150), receives and powers from the output end of second AC/DC converter (148)；
Second AC load (152) is received from second ac bus (144) and is powered,
Wherein, second ac bus (144), second AC/DC converter (146) exchange with described second/it is straight
Stream transformer (148) is respectively positioned in the tower bottom of the wind power generating set.
12. direct-flow distribution system as claimed in claim 11, which is characterized in that the second low-voltage direct bus (138) from
The output end of second AC/DC converter (148) receives power supply.
13. direct-flow distribution system as claimed in claim 12, which is characterized in that the direct-flow distribution system further include: be located at
The second energy storage device (154) in the tower bottom of the wind power generating set,
Wherein, second energy storage device (154) is filled by the DC voltage of the second low-voltage direct bus (138)
Electricity,
And when the wind power generating set breaks down, second energy storage device (154) is to second low-voltage direct
Bus (138) power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820838956.2U CN208369227U (en) | 2018-05-31 | 2018-05-31 | The direct-flow distribution system of wind power generating set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196739A (en) * | 2020-10-10 | 2021-01-08 | 国电联合动力技术有限公司 | Wind generating set uninterrupted power supply intelligent regulation and control system and method |
| CN116365570A (en) * | 2021-12-28 | 2023-06-30 | 北京金风科创风电设备有限公司 | Power transmission and transformation system and wind generating set comprising same |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112196739A (en) * | 2020-10-10 | 2021-01-08 | 国电联合动力技术有限公司 | Wind generating set uninterrupted power supply intelligent regulation and control system and method |
| CN116365570A (en) * | 2021-12-28 | 2023-06-30 | 北京金风科创风电设备有限公司 | Power transmission and transformation system and wind generating set comprising same |
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