CN109167428A - A kind of device and method controlling aerogenerator unit safe emergency propeller retraction - Google Patents
A kind of device and method controlling aerogenerator unit safe emergency propeller retraction Download PDFInfo
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- CN109167428A CN109167428A CN201811050471.8A CN201811050471A CN109167428A CN 109167428 A CN109167428 A CN 109167428A CN 201811050471 A CN201811050471 A CN 201811050471A CN 109167428 A CN109167428 A CN 109167428A
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- 238000000034 method Methods 0.000 title claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of devices for controlling aerogenerator unit safe emergency propeller retraction, including backup power supply I, backup power supply II, backup power supply III, pitch motor I, pitch motor II, pitch motor III, relay I, relay II, the III, first to the 9th relay of relay；Described first, the four, the 7th relays all have two normally opened contacts, second, third, the five, the six, the eight, the 9th relays all have a normally opened contact and two normally-closed contacts.The present invention is by carrying out Redundancy Design with backup power supply to each blade emergency propeller retraction; it may insure even if in the case where some blade backup power supply exception; progress emergency propeller retraction movement on a backup power supply in other two blades can also be switched to according to criterion; ensure that unit can be shut down in the secure state; in this way it is advantageously ensured that unit is in emergency; blade can be withdrawn in time, to avoid the mortality damage because blade can not be withdrawn in time causes unit to be likely to occur.
Description
Technical field
The present invention relates to wind-powered electricity generation field, in particular to a kind of device and method for controlling aerogenerator unit safe emergency propeller retraction.
Background technique
For synchronizing the Wind turbines of variable pitch using motor, when emergency occurs in it, Wind turbines can be tight
Suddenly puts away the oars and ensure that the variable pitch angle of three blades is consistent substantially.During emergency propeller retraction, the power supply of variable pitch motor
A set of backup power supply that power supply is equipped with from each blade.It just can not in time certainly when the corresponding backup power supply exception of single blade
It is dynamic to execute emergency propeller retraction movement, at this time because load unevenness Wind turbines will bear certain risk factor, it could even be possible to
Driving.
Summary of the invention
In order to solve the above technical problem, the present invention provides a kind of structures, and control Wind turbines simple, that safety is good are pacified
The device of full emergency propeller retraction, and a kind of method for controlling aerogenerator unit safe emergency propeller retraction is provided.
Technical proposal that the invention solves the above-mentioned problems is: a kind of device controlling aerogenerator unit safe emergency propeller retraction, packet
Include backup power supply I, backup power supply II, backup power supply III, for the pitch motor I of driving blade I, for the change of driving blade II
Paddle motor II, the pitch motor III for driving blade III, relay I, relay II, the III, first to the 9th relay of relay
Device；
Described first, the four, the 7th relays all have two normally opened contacts, second, third, the five, the six, the eight, the 9th
Relay all has a normally opened contact and two normally-closed contacts；
One of them of the normally opened contact of the relay I, one of normally-closed contact of the second relay, third relay are often
Closed contact is sequentially connected in series on backup power supply I and the link circuit of pitch motor I, one of them normally opened touching of the 4th relay
Point, the normally opened contact of the 6th relay, the 5th relay one of normally-closed contact be sequentially connected in series in backup power supply I and variable pitch
On the link circuit of motor II, one of normally opened contact, the normally opened contact of the 8th relay, the 9th relay of the 7th relay
One of normally-closed contact of device is sequentially connected in series on backup power supply I and the link circuit of pitch motor III；
One of normally opened contact of first relay, the normally opened contact of the second relay, third relay another is normally closed
Contact is sequentially connected in series on backup power supply II and the link circuit of pitch motor I, the normally opened contact of relay II, the 5th relay
Another normally-closed contact, the 6th relay one of normally-closed contact be sequentially connected in series in backup power supply II and pitch motor II
Link circuit on, another normally opened contact of the 7th relay, the normally opened contact of the 9th relay, the 8th relay are wherein
One normally-closed contact is sequentially connected in series on backup power supply II and the link circuit of pitch motor III；
Another normally closed touching of another normally opened contact of the first relay, the normally opened contact of third relay, the second relay
Point is sequentially connected in series on backup power supply III and the link circuit of pitch motor I, another normally opened contact of the 4th relay, the 5th
The normally opened contact of relay, the 6th relay another normally-closed contact be sequentially connected in series in backup power supply III and pitch motor II
On link circuit, the normally opened contact of relay III, another normally-closed contact of the 8th relay, the 9th relay another often
Closed contact is sequentially connected in series on backup power supply III and the link circuit of pitch motor III.
The device of above-mentioned control aerogenerator unit safe emergency propeller retraction, when Wind turbines carry out urgent variable pitch movement, then relay
Device I, relay II, relay III it is electric, and in the normal situation of backup power supply I, backup power supply II, backup power supply III,
First to the 9th relay will not obtain electric.
The device of above-mentioned control aerogenerator unit safe emergency propeller retraction, when backup power supply I is abnormal, then the coil of the first relay
It obtains electric；If backup power supply II is abnormal, the coil of the 4th relay obtains electric；If backup power supply III is abnormal, the 7th relay
Coil obtains electric.
The device of above-mentioned control aerogenerator unit safe emergency propeller retraction, described first to third relay is mounted on blade I
In pitch control cabinet, the 4th to the 6th relay is mounted in the pitch control cabinet of blade II, the installation of the 7th to the 9th relay
In the pitch control cabinet of blade III.
The device of above-mentioned control aerogenerator unit safe emergency propeller retraction, the described first to the 9th relay is intermediate relay
Device.
A method of control aerogenerator unit safe emergency propeller retraction, comprising the following steps:
Step 1: judging whether Wind turbines enter emergency propeller retraction state, if so, relay I, relay II, relay III
It is electric, enter step two；
Step 2: judging whether there is backup power supply failure, if there is no backup power supply failure, backup power supply I, backup power supply II,
Backup power supply III is separately connected pitch motor I, pitch motor II, pitch motor III, blade I, blade II, III emergency propeller retraction of blade
Required power supply is respectively from backup power supply I, backup power supply II, backup power supply III；If there is backup power supply failure, continue to sentence
The serial number of the disconnected backup power supply to break down, if I failure of backup power supply, then enter step three, if II failure of backup power supply,
Four are then entered step, if III failure of backup power supply, then enter step five；
Step 3: the first relay obtains electric first, then judge backup power supply II whether can simultaneously for blade I and blade II into
Row emergency propeller retraction, if backup power supply II is enough support blade I and blade II completes emergency propeller retraction movement, the second relay is obtained
Electricity disconnects backup power supply I and the connection of pitch motor I first by one of normally-closed contact of the second relay, standby electricity
Source II is connected to pitch motor I, and power supply required for I emergency propeller retraction of blade comes from backup power supply II, if backup power supply II is not
It is enough support blade I and blade II completes emergency propeller retraction movement, then judges whether backup power supply III can be simultaneously for I He of blade again
Blade III carries out emergency propeller retraction, if backup power supply III is enough support blade I and blade III and completes emergency propeller retraction movement, third after
Electric appliance obtains electric, disconnects backup power supply I and the connection of pitch motor I first by one of normally-closed contact of third relay,
Backup power supply III is connected to pitch motor I, and power supply required for I emergency propeller retraction of blade comes from backup power supply III；
Step 4: the 4th relay obtains electric first, then judges whether backup power supply III can be simultaneously for blade III and blade II
Emergency propeller retraction is carried out, if backup power supply III is enough support blade III and blade II completes emergency propeller retraction movement, the 5th relay
Must be electric, disconnect backup power supply II and the connection of pitch motor II first by another normally-closed contact of the 5th relay, standby
Power supply III is connected to pitch motor II, and power supply required for II emergency propeller retraction of blade comes from backup power supply III, if backup power supply
III is not enough to support blade III and the completion emergency propeller retraction movement of blade II, then judges whether backup power supply I can be simultaneously for leaf again
Piece I and blade II carry out emergency propeller retraction, if backup power supply I is enough support blade I and blade II completes emergency propeller retraction movement, the
Six relays obtain electric, keep the connection of backup power supply II and pitch motor II first by one of normally-closed contact of the 6th relay
It disconnects, backup power supply I is connected to pitch motor II, and power supply required for II emergency propeller retraction of blade comes from backup power supply I；
Step 5: the 7th relay obtains electric first, then judge backup power supply I whether can simultaneously for blade III and blade I into
Row emergency propeller retraction, if backup power supply I is enough support blade III and blade I and completes emergency propeller retraction movement, the 8th relay obtain it is electric,
Disconnect backup power supply III and the connection of pitch motor III first by another normally-closed contact of the 8th relay, backup power supply I
It is connected to pitch motor III, power supply required for III emergency propeller retraction of blade comes from backup power supply I, if backup power supply I is not enough to
Support blade III and blade I complete emergency propeller retraction movement, then judge whether backup power supply II can be simultaneously for blade III and leaf again
Piece II carries out emergency propeller retraction, if backup power supply II is enough support blade III and blade II and completes emergency propeller retraction movement, the 9th after
Electric appliance obtains electric, disconnects backup power supply III and the connection of pitch motor III first by another normally-closed contact of the 9th relay,
Backup power supply II is connected to pitch motor III, and power supply required for III emergency propeller retraction of blade comes from backup power supply II.
The beneficial effects of the present invention are: the present invention is set by carrying out redundancy with backup power supply to each blade emergency propeller retraction
Meter, it can be ensured that even if can also be switched to according to criterion other in the case where some blade backup power supply exception
Emergency propeller retraction movement is carried out on a backup power supply in two blades, it is ensured that unit can be shut down in the secure state, in this way
It is advantageously ensured that unit, in emergency, blade can be withdrawn in time, to avoid because blade can not withdraw in time and cause
The mortality damage that unit is likely to occur.
Detailed description of the invention
Fig. 1 is the circuit structure diagram of apparatus of the present invention.
Fig. 2 is the electric operation control circuit figure of blade I of the present invention.
Fig. 3 is the control flow chart of blade I of the present invention.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of device for controlling aerogenerator unit safe emergency propeller retraction, including backup power supply I, backup power supply
II, backup power supply III, the pitch motor I for driving blade I, the pitch motor II for driving blade II, for driving leaf
The pitch motor III of piece III, I KA1 of relay, II KA2 of relay, III KA3 of relay, the first relay KA1-1, the second relay
Device KA1-2, third relay KA1-3, the 4th relay KA2-1, the 5th relay KA2-2, the 6th relay KA2-3, the 7th
Relay KA3-1, the 8th relay KA3-2, the 9th relay KA3-3；
The first relay KA1-1, the 4th relay KA2-1, the 7th relay KA3-1 relay all have two normally opened touchings
Point, the second relay KA1-2, third relay KA1-3, the 5th relay KA2-2, the 6th relay KA2-3, the 8th relay
KA3-2, the 9th relay KA3-3 all have a normally opened contact and two normally-closed contacts；
The normally opened contact of I KA1 of relay, one of normally-closed contact of the second relay KA1-2, third relay KA1-
3 one of normally-closed contact is sequentially connected in series on backup power supply I and the link circuit of pitch motor I, the 4th relay KA2-1
One of normally opened contact, the 6th relay KA2-3 normally opened contact, the 5th relay KA2-2 one of them normally closed touching
Point is sequentially connected in series on backup power supply I and the link circuit of pitch motor II, one of them normally opened touching of the 7th relay KA3-1
Point, the normally opened contact of the 8th relay KA3-2, the 9th relay KA3-3 one of normally-closed contact be sequentially connected in series in standby
On power supply I and the link circuit of pitch motor III；
One of normally opened contact of first relay KA1-1, the normally opened contact of the second relay KA1-2, third relay
Another normally-closed contact of KA1-3 is sequentially connected in series on backup power supply II and the link circuit of pitch motor I, II KA2 of relay
Normally opened contact, another normally-closed contact of the 5th relay KA2-2, the 6th relay KA2-3 one of normally-closed contact
It is sequentially connected in series on backup power supply II and the link circuit of pitch motor II, another normally opened contact of the 7th relay KA3-1,
The normally opened contact of 9th relay KA3-3, one of normally-closed contact of the 8th relay KA3-2 are sequentially connected in series in backup power supply
II on the link circuit of pitch motor III；
Another normally opened contact of first relay KA1-1, the normally opened contact of third relay KA1-3, the second relay KA1-2
Another normally-closed contact be sequentially connected in series on the link circuit of backup power supply III and pitch motor I, the 4th relay KA2-1's
Another normally opened contact, the normally opened contact of the 5th relay KA2-2, the 6th relay KA2-3 another normally-closed contact successively
It is serially connected on backup power supply III and the link circuit of pitch motor II, normally opened contact, the 8th relay KA3- of III KA3 of relay
2 another normally-closed contact, another normally-closed contact of the 9th relay KA3-3 are sequentially connected in series in backup power supply III and variable pitch electricity
On the link circuit of machine III.
It is interlocked between second relay KA1-2, third relay KA1-3, the 5th relay KA2-2, the 6th relay
It is interlocked between device KA2-3, is interlocked between the 8th relay KA3-2, the 9th relay KA3-3.
When Wind turbines carry out urgent variable pitch movement, then I KA1 of relay, II KA2 of relay, III KA3 of relay are obtained
Electricity, and in the normal situation of backup power supply I, backup power supply II, backup power supply III, the first to the 9th relay KA3-3 is not
It can obtain electric.When backup power supply I is abnormal, then the coil of the first relay KA1-1 obtains electric；If backup power supply II is abnormal, the 4th after
The coil of electric appliance KA2-1 obtains electric；If backup power supply III is abnormal, the coil of the 7th relay KA3-1 obtains electric.
Described first to third relay KA1-3 is mounted in the pitch control cabinet of blade I, the 4th to the 6th relay
KA2-3 is mounted in the pitch control cabinet of blade II, and the 7th to the 9th relay KA3-3 is mounted on the pitch control cabinet of blade III
It is interior.Described first to the 9th relay KA3-3 is intermediate relay.
As shown in Fig. 2, (a) in Fig. 2: when needing emergency propeller retraction, I KA1 of relay obtains electric；(b) in Fig. 2: it needs tight
Urgency is put away the oars but I failure of backup power supply of blade I, then the first relay KA1-1 is obtained electric；(c) in Fig. 2: emergency propeller retraction is needed
But I failure of backup power supply of blade I, in the case where confirming that I power transfer relay of backup power supply of blade I obtains electric, but standby
The enough support blades II of power supply II and blade I are put away the oars simultaneously, then KA1-2 obtains electric；(d) in Fig. 2: emergency propeller retraction is needed but leaf
I failure of backup power supply of piece I obtains electric and backup power supply II in I power transfer relay of backup power supply of confirmation blade I and does not support enough
Blade II and blade I are put away the oars simultaneously, but the enough support blades III of backup power supply III and blade I are put away the oars simultaneously, then KA1-3 obtains electric.
A method of control aerogenerator unit safe emergency propeller retraction, comprising the following steps:
Step 1: judging whether Wind turbines enter emergency propeller retraction state, if so, I KA1 of relay, II KA2 of relay, after
III KA3 of electric appliance it is electric, enter step two；
Step 2: judging whether there is backup power supply failure, if there is no backup power supply failure, backup power supply I, backup power supply II,
Backup power supply III is separately connected pitch motor I, pitch motor II, pitch motor III, blade I, blade II, III emergency propeller retraction of blade
Required power supply is respectively from backup power supply I, backup power supply II, backup power supply III；If there is backup power supply failure, continue to sentence
The serial number of the disconnected backup power supply to break down, if I failure of backup power supply, then enter step three, if II failure of backup power supply,
Four are then entered step, if III failure of backup power supply, then enter step five；
Step 3: the first relay KA1-1 is obtained electric first, then judges whether backup power supply II can be simultaneously for blade I and leaf
Piece II carries out emergency propeller retraction, if backup power supply II is enough support blade I and blade II completes emergency propeller retraction movement, the second relay
Device obtains electric, so that backup power supply I and the connection of pitch motor I is first broken by one of normally-closed contact of the second relay KA1-2
It opens, backup power supply II is connected to pitch motor I, and power supply required for I emergency propeller retraction of blade comes from backup power supply II, if standby
Power supply II is not enough to support blade I and blade II completes emergency propeller retraction movement, then judges whether backup power supply III can be simultaneously again
Emergency propeller retraction is carried out for blade I and blade III, if backup power supply III is enough support blade I and blade III is completed emergency propeller retraction and moved
Make, then third relay obtains electric, makes backup power supply I and variable pitch electricity by one of normally-closed contact of third relay KA1-3
The connection of machine I first disconnects, and backup power supply III is connected to pitch motor I, and power supply required for I emergency propeller retraction of blade comes from standby
Power supply III；
Step 4: the 4th relay KA2-1 is obtained electric first, then judges whether backup power supply III can be simultaneously for blade III and leaf
Piece II carries out emergency propeller retraction, if backup power supply III is enough support blade III and blade II and completes emergency propeller retraction movement, the 5th after
Electric appliance obtains electric, keeps the connection of backup power supply II and pitch motor II first by another normally-closed contact of the 5th relay KA2-2
It disconnecting, backup power supply III is connected to pitch motor II, and power supply required for II emergency propeller retraction of blade comes from backup power supply III, if
Backup power supply III is not enough to support blade III and blade II completes emergency propeller retraction movement, then judges that backup power supply I whether can again
Emergency propeller retraction is carried out for blade I and blade II simultaneously, if backup power supply I is enough support blade I and blade II completes emergency propeller retraction
Movement, then the 6th relay obtains electric, makes backup power supply II and variable pitch by one of normally-closed contact of the 6th relay KA2-3
The connection of motor II first disconnects, and backup power supply I is connected to pitch motor II, and power supply required for II emergency propeller retraction of blade comes from
Backup power supply I；
Step 5: the 7th relay KA3-1 is obtained electric first, then judges whether backup power supply I can be simultaneously for blade III and leaf
Piece I carries out emergency propeller retraction, if backup power supply I is enough support blade III and blade I completes emergency propeller retraction movement, the 8th relay
Must be electric, backup power supply III and the connection of pitch motor III are disconnected first by another normally-closed contact of the 8th relay KA3-2,
Backup power supply I is connected to pitch motor III, and power supply required for III emergency propeller retraction of blade comes from backup power supply I, if standby is electric
Source I is not enough to support blade III and blade I completes emergency propeller retraction movement, then judges whether backup power supply II can be simultaneously for leaf again
Piece III and blade II carry out emergency propeller retraction, if backup power supply II is enough support blade III and blade II completes emergency propeller retraction movement,
Then the 9th relay obtains electric, makes backup power supply III and pitch motor III by another normally-closed contact of the 9th relay KA3-3
Connection first disconnect, backup power supply II is connected to pitch motor III, and power supply required for III emergency propeller retraction of blade comes from standby
Power supply II.
Claims (6)
1. it is a kind of control aerogenerator unit safe emergency propeller retraction device, it is characterised in that: including backup power supply I, backup power supply II,
Backup power supply III, the pitch motor II for driving blade II, is used for driving blade III at the pitch motor I for driving blade I
Pitch motor III, relay I, relay II, the III, first to the 9th relay of relay；
Described first, the four, the 7th relays all have two normally opened contacts, second, third, the five, the six, the eight, the 9th
Relay all has a normally opened contact and two normally-closed contacts；
One of them of the normally opened contact of the relay I, one of normally-closed contact of the second relay, third relay are often
Closed contact is sequentially connected in series on backup power supply I and the link circuit of pitch motor I, one of them normally opened touching of the 4th relay
Point, the normally opened contact of the 6th relay, the 5th relay one of normally-closed contact be sequentially connected in series in backup power supply I and variable pitch
On the link circuit of motor II, one of normally opened contact, the normally opened contact of the 8th relay, the 9th relay of the 7th relay
One of normally-closed contact of device is sequentially connected in series on backup power supply I and the link circuit of pitch motor III；
One of normally opened contact of first relay, the normally opened contact of the second relay, third relay another is normally closed
Contact is sequentially connected in series on backup power supply II and the link circuit of pitch motor I, the normally opened contact of relay II, the 5th relay
Another normally-closed contact, the 6th relay one of normally-closed contact be sequentially connected in series in backup power supply II and pitch motor II
Link circuit on, another normally opened contact of the 7th relay, the normally opened contact of the 9th relay, the 8th relay are wherein
One normally-closed contact is sequentially connected in series on backup power supply II and the link circuit of pitch motor III；
Another normally closed touching of another normally opened contact of the first relay, the normally opened contact of third relay, the second relay
Point is sequentially connected in series on backup power supply III and the link circuit of pitch motor I, another normally opened contact of the 4th relay, the 5th
The normally opened contact of relay, the 6th relay another normally-closed contact be sequentially connected in series in backup power supply III and pitch motor II
On link circuit, the normally opened contact of relay III, another normally-closed contact of the 8th relay, the 9th relay another often
Closed contact is sequentially connected in series on backup power supply III and the link circuit of pitch motor III.
2. the device of control aerogenerator unit safe emergency propeller retraction according to claim 1, it is characterised in that: work as Wind turbines
Carry out urgent variable pitch movement, then relay I, relay II, relay III it is electric, and backup power supply I, backup power supply II, after
In the normal situation of stand-by power source III, the first to the 9th relay will not obtain electric.
3. the device of control aerogenerator unit safe emergency propeller retraction according to claim 2, it is characterised in that: work as backup power supply
I is abnormal, then the coil of the first relay obtains electric；If backup power supply II is abnormal, the coil of the 4th relay obtains electric；If standby is electric
Source III is abnormal, then the coil of the 7th relay obtains electric.
4. it is according to claim 1 control aerogenerator unit safe emergency propeller retraction device, it is characterised in that: described first to
Third relay is mounted in the pitch control cabinet of blade I, and the 4th to the 6th relay is mounted on the pitch control cabinet of blade II
Interior, the 7th to the 9th relay is mounted in the pitch control cabinet of blade III.
5. it is according to claim 1 control aerogenerator unit safe emergency propeller retraction device, it is characterised in that: described first to
9th relay is intermediate relay.
6. a kind of method of the control aerogenerator unit safe emergency propeller retraction based on device as claimed in claim 3, including following step
It is rapid:
Step 1: judging whether Wind turbines enter emergency propeller retraction state, if so, relay I, relay II, relay III
It is electric, enter step two；
Step 2: judging whether there is backup power supply failure, if there is no backup power supply failure, backup power supply I, backup power supply II,
Backup power supply III is separately connected pitch motor I, pitch motor II, pitch motor III, blade I, blade II, III emergency propeller retraction of blade
Required power supply is respectively from backup power supply I, backup power supply II, backup power supply III；If there is backup power supply failure, continue to sentence
The serial number of the disconnected backup power supply to break down, if I failure of backup power supply, then enter step three, if II failure of backup power supply,
Four are then entered step, if III failure of backup power supply, then enter step five；
Step 3: the first relay obtains electric first, then judge backup power supply II whether can simultaneously for blade I and blade II into
Row emergency propeller retraction, if backup power supply II is enough support blade I and blade II completes emergency propeller retraction movement, the second relay is obtained
Electricity disconnects backup power supply I and the connection of pitch motor I first by one of normally-closed contact of the second relay, standby electricity
Source II is connected to pitch motor I, and power supply required for I emergency propeller retraction of blade comes from backup power supply II, if backup power supply II is not
It is enough support blade I and blade II completes emergency propeller retraction movement, then judges whether backup power supply III can be simultaneously for I He of blade again
Blade III carries out emergency propeller retraction, if backup power supply III is enough support blade I and blade III and completes emergency propeller retraction movement, third after
Electric appliance obtains electric, disconnects backup power supply I and the connection of pitch motor I first by one of normally-closed contact of third relay,
Backup power supply III is connected to pitch motor I, and power supply required for I emergency propeller retraction of blade comes from backup power supply III；
Step 4: the 4th relay obtains electric first, then judges whether backup power supply III can be simultaneously for blade III and blade II
Emergency propeller retraction is carried out, if backup power supply III is enough support blade III and blade II completes emergency propeller retraction movement, the 5th relay
Must be electric, disconnect backup power supply II and the connection of pitch motor II first by another normally-closed contact of the 5th relay, standby
Power supply III is connected to pitch motor II, and power supply required for II emergency propeller retraction of blade comes from backup power supply III, if backup power supply
III is not enough to support blade III and the completion emergency propeller retraction movement of blade II, then judges whether backup power supply I can be simultaneously for leaf again
Piece I and blade II carry out emergency propeller retraction, if backup power supply I is enough support blade I and blade II completes emergency propeller retraction movement, the
Six relays obtain electric, keep the connection of backup power supply II and pitch motor II first by one of normally-closed contact of the 6th relay
It disconnects, backup power supply I is connected to pitch motor II, and power supply required for II emergency propeller retraction of blade comes from backup power supply I；
Step 5: the 7th relay obtains electric first, then judge backup power supply I whether can simultaneously for blade III and blade I into
Row emergency propeller retraction, if backup power supply I is enough support blade III and blade I and completes emergency propeller retraction movement, the 8th relay obtain it is electric,
Disconnect backup power supply III and the connection of pitch motor III first by another normally-closed contact of the 8th relay, backup power supply I
It is connected to pitch motor III, power supply required for III emergency propeller retraction of blade comes from backup power supply I, if backup power supply I is not enough to
Support blade III and blade I complete emergency propeller retraction movement, then judge whether backup power supply II can be simultaneously for blade III and leaf again
Piece II carries out emergency propeller retraction, if backup power supply II is enough support blade III and blade II and completes emergency propeller retraction movement, the 9th after
Electric appliance obtains electric, disconnects backup power supply III and the connection of pitch motor III first by another normally-closed contact of the 9th relay,
Backup power supply II is connected to pitch motor III, and power supply required for III emergency propeller retraction of blade comes from backup power supply II.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811050471.8A CN109167428B (en) | 2018-09-10 | 2018-09-10 | Device and method for controlling safe emergency pitch of wind turbine generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811050471.8A CN109167428B (en) | 2018-09-10 | 2018-09-10 | Device and method for controlling safe emergency pitch of wind turbine generator |
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| CN109167428B CN109167428B (en) | 2023-08-25 |
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| CN113572252A (en) * | 2020-04-28 | 2021-10-29 | 北京金风科创风电设备有限公司 | Backup power supply system, wind generating set and variable pitch control method |
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| CN109167428B (en) | 2023-08-25 |
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