CN109995281A - A kind of control method, equipment and the readable storage medium storing program for executing of Wind turbines fault recovery - Google Patents
A kind of control method, equipment and the readable storage medium storing program for executing of Wind turbines fault recovery Download PDFInfo
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- CN109995281A CN109995281A CN201711486194.0A CN201711486194A CN109995281A CN 109995281 A CN109995281 A CN 109995281A CN 201711486194 A CN201711486194 A CN 201711486194A CN 109995281 A CN109995281 A CN 109995281A
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- torque
- fault recovery
- value
- wind turbines
- active power
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/105—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for increasing the stability
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
Abstract
The invention discloses a kind of control method of Wind turbines fault recovery, it is included in after Wind turbines break down, checks the signal of fault recovery order；After receiving the fault recovery order, increase torque reference value by preset torque rate of change until unit relevant parameter restores to preset range；Wherein, the relevant parameter is specially active power, torque and revolving speed.Scheme provided by the invention, revolving speed is inhibited to rise by increasing torque when Wind turbines break down, can matchingly increase active power, revolving speed, torque, restore parameters steadily, rapidly to normal condition to avoid " vacation restores " phenomenon.The invention also discloses a kind of control equipment of Wind turbines fault recovery and computer readable storage mediums, it may have above-mentioned beneficial effect, details are not described herein.
Description
Technical field
The present invention relates to wind power generation fields, more particularly to control method, the equipment of a kind of Wind turbines fault recovery
And readable storage medium storing program for executing.
Background technique
Wind power generating set includes wind wheel, generator；Containing the composition such as blade, wheel hub, reinforcing member in wind wheel；It has blade by
The functions such as Wind-driven rotating power generation, the rotation of generator head.Wind-power electricity generation power supply is by wind power generating set, the tower of support generating set
The composition such as frame, storage battery charge controller, inverter, unloader, net-connected controller, battery group.Wind power generating set carries out
When power generation, it will guarantee that output electric frequency is constant.No matter this generates electricity by way of merging two or more grid systems for blower or wind light mutual complementing power generation all very must
It wants.Guarantee the frequency-invariant of wind-powered electricity generation, a kind of mode is ensuring that the constant rotational speed of generator, i.e. the operation side of constant-speed and constant-frequency
Formula because generator carries out driving operating by transmission device by wind energy conversion system, undoubtedly want constant wind energy conversion system in this way
Revolving speed, this mode influence whether the transfer efficiency of wind energy；Another way is exactly that generator speed changes with wind speed, passes through it
Its means guarantee that the frequency-invariant of output electric energy, i.e. variable speed constant frequency are run.
When wind power generating set breaks down, in order to guarantee to operate normally, need to restore within a certain period of time to normal
State.In the prior art, horizontal control method before fast quick-recovery active power to failure is usually taken, but in this control
The active power that method processed is restored tends not to keep normal condition, it may appear that quickly recover to before failure after level again substantially under
Drop, is then slowly restored to horizontal phenomenon before failure again, and this " vacation restores " phenomenon keeps entire recovery time longer, is easy
Lead to unit irregular operation.
Therefore, the wind power generating set fluctuation that active power is restored after electric network fault how is reduced, is art technology
Personnel's technical issues that need to address.
Summary of the invention
The object of the present invention is to provide control method, equipment and the readable storage medium storing program for executing of a kind of Wind turbines fault recovery,
For reducing the wind power generating set fluctuation that active power is restored after electric network fault.
In order to solve the above technical problems, the present invention provides a kind of control method of Wind turbines fault recovery, comprising:
After Wind turbines break down, the signal of fault recovery order is checked；
After receiving the fault recovery order, increase torque reference value by preset torque rate of change until unit phase
It closes in Parameter reconstruction to preset range；
Wherein, the relevant parameter is specially active power, torque and revolving speed.
Optionally, the preset torque rate of change is specially the corresponding torque variation of range of preset Voltage Drop value
Rate；
Correspondingly, described specifically included by preset torque rate of change increase torque reference value:
Voltage Drop value described in regular check；
According to range locating for the Voltage Drop value, by described in the corresponding torque rate of change increase of the preset range
Torque reference value；
Wherein, the Voltage Drop value for the voltage rating of the unit subtract the unit virtual voltage value in institute
State the accounting in voltage rating.
Optionally, described specifically to be wrapped by the preset range corresponding torque rate of change increase torque reference value
It includes:
When the Voltage Drop value is greater than or equal to first threshold, increase the torque reference by the first torque rate of change
Value；
When the Voltage Drop value is less than the first threshold and is greater than or equal to second threshold, by the first changed power
Rate increases the active power；
When the Voltage Drop value is less than the second threshold, is adjusted and controlled according to the state of the unit fault recovery
Strategy is until the unit relevant parameter restores to the preset range of the normal value.
Optionally, described that control strategy is adjusted until the unit relevant parameter according to the state of the unit fault recovery
Restore to the preset range of the normal value to specifically include:
Judge whether the actual speed of current wind wheel is greater than rated speed；
If it is, carrying out the power limitation control of preset time；
If it is not, then increasing the active power by the second power variation rate until the unit relevant parameter restores to institute
It states in the preset range of normal value.
Optionally, described that control strategy is adjusted until the unit relevant parameter according to the state of the unit fault recovery
Restore to the preset range of the normal value to specifically include:
Judge whether variable pitch angle is zero；
If it is, increasing the active power by second power variation rate until the unit relevant parameter restores
To the preset range of the normal value；
If it is not, then carrying out the power limitation control of the preset time.
Optionally, increasing the active power, specially to set the torque reference value according to the following formula described to increase
Active power:
Wherein, the T is the torque reference value, the P0The specially active power actual value of frequency converter feedback, institute
Stating Δ x is required active power change rate, and the r is the corresponding rated speed of nominal torque, and the r ' is presently described wind
The revolving speed of wheel, the n are constant.
In order to solve the above technical problems, the present invention also provides a kind of control equipment of Wind turbines fault recovery, comprising:
Memory, for storing instruction, described instruction include the control of the Wind turbines fault recovery as described in any of the above-described
The step of method processed；
Processor, for executing the instruction in the memory.
In order to solve the above technical problems, being stored thereon with calculating the present invention also provides a kind of computer readable storage medium
Machine program realizes the control of the Wind turbines fault recovery as described in any of the above-described when the computer program is executed by processor
The step of method.
The control method of Wind turbines fault recovery provided by the present invention is included in after Wind turbines break down, inspection
Look into the signal of fault recovery order；After receiving the fault recovery order, increases torque by preset torque rate of change and give
Definite value is until unit relevant parameter restores to preset range；Wherein, the relevant parameter is specially active power, torque and turns
Speed.It breaks down moment in Wind turbines, wind speed round can continue to increase, but while revolving speed increases, torque is not
Adaptably increase.Due to Wind turbines active power respectively with wind speed round and torque direct proportionality, and wind speed round
Is influenced again by torque, revolving speed increase and torque do not increase when, it may appear that active power is restored to normal value and revolving speed turn
Square mismatch, also variation the case where, at this moment wind speed round can decline, this resulted in active power seem restore normal value but
It is not able to maintain " vacation restores " phenomenon of normal value.Therefore when carrying out fault recovery, increase torque by preset torque rate of change
Given value, it is ensured that inhibit revolving speed to rise while improving active power, make active power, revolving speed, torque matchingly
Rise, avoids the occurrence of " vacation restores " phenomenon, restore parameters steadily, rapidly to normal condition.The present invention provides
Wind turbines fault recovery control equipment and computer readable storage medium, it may have above-mentioned beneficial effect, herein no longer
It repeats.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of flow chart of the control method of Wind turbines fault recovery provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of the specific embodiment of step S11 provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the specific embodiment of step S21 provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of the specific embodiment of step S32 provided in an embodiment of the present invention；
Fig. 5 is the flow chart of the specific embodiment of another step S32 provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of the control equipment of Wind turbines fault recovery provided in an embodiment of the present invention.
Specific embodiment
Core of the invention is to provide control method, equipment and the readable storage medium storing program for executing of a kind of Wind turbines fault recovery,
For reducing the wind power generating set fluctuation that active power is restored after electric network fault.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is a kind of flow chart of the control method of Wind turbines fault recovery provided in an embodiment of the present invention.Such as Fig. 1 institute
Show, the control method of Wind turbines fault recovery includes:
S10: after Wind turbines break down, the signal of fault recovery order is checked.
S11: after receiving fault recovery order, increase torque reference value by preset torque rate of change until unit phase
It closes in Parameter reconstruction to preset range.
Wherein, relevant parameter is specially active power, torque and revolving speed.
In specific implementation, it for step S10, after completing to the lookup and maintenance of Wind turbines failure,
Wind turbines are restarted.Therefore after Wind turbines break down, need to wait the signal of fault recovery order, to connect
Start the step of consequent malfunction is restored after receiving the signal.
For step S11, after master control receives fault recovery order, i.e., increases by preset torque rate of change and turn
Square given value.Torque reference value is specifically sent to frequency converter by master control room, by Frequency Converter Control torque magnification.It is given increasing torque
When definite value, wind speed round or generator amature revolving speed (inverted can calculate between the two) can refer to, that is, refer to preset turn
Optimal curve between square revolving speed by taking H93 type as an example, can specifically be controlled by following procedure:
" the THEN of IF actual_rotor_speed≤9.7 output_torque:=0.0；END_IF；
IF (actual_rotor_speed > 9.7) AND (actual_rotor_speed≤11.0) THEN output_
Torque:=(actual_rotor_speed-9.7) × 21.53；END_IF；
IF (actual_rotor_speed > 11.0) AND (actual_rotor_speed≤12.2) THEN output_
Torque:=(actual_rotor_speed-11.0) × 7.27+27.99；END_IF；
IF (actual_rotor_speed > 12.2) AND (actual_rotor_speed≤13.8) THEN output_
Torque:=(actual_rotor_speed-12.2) × 6.88+36.71；END_IF；
IF (actual_rotor_speed > 13.8) AND (actual_rotor_speed≤14.63) THEN
Output_torque:=(actual_rotor_speed-13.8) × 52.28+47.72；END_IF；
IF (actual_rotor_speed > 14.63) AND (actual_rotor_speed≤15.26) THEN
Output_torque:=(actual_rotor_speed-14.63) × 10.46+91.11；END_IF；
IF constant_power_mode AND(actual_rotor_speed>15.26)THEN output_
Torque:=(15.26 × 100.0)/actual_rotor_speed × 97.8/100；END_IF；"
By increasing torque reference value, inhibits the growth of wind speed round, increase torque and revolving speed adaptably, until wind
The parameters of motor group: active power, torque, revolving speed restore to the preset normal value of the unit.
The control method of Wind turbines fault recovery provided in an embodiment of the present invention, is included in Wind turbines and breaks down
Afterwards, the signal of fault recovery order is checked；After receiving the fault recovery order, increases by preset torque rate of change and turn
Square given value is until unit relevant parameter restores to preset range；Wherein, the relevant parameter is specially active power, torque
And revolving speed.It breaks down moment in Wind turbines, wind speed round can continue to increase, but while revolving speed increases, torque is simultaneously
Do not increase adaptably.Due to Wind turbines active power respectively with wind speed round and torque direct proportionality, and wind wheel
Revolving speed receive again torque influence, revolving speed increase and torque do not increase when, it may appear that active power is restored to turn to normal value
Fast torque mismatches, also the variation the case where, and at this moment wind speed round can decline, this has resulted in active power, and to seem recovery normal
Value is not able to maintain " vacation restores " phenomenon of normal value but.Therefore when carrying out fault recovery, increase by preset torque rate of change
Torque reference value, it is ensured that inhibit revolving speed to rise while improving active power, make active power, revolving speed, torque phase
Rise with ground, avoids the occurrence of " vacation restores " phenomenon, restore parameters steadily, rapidly to normal condition.
Fig. 2 is a kind of flow chart of the specific embodiment of step S11 provided in an embodiment of the present invention.As shown in Fig. 2,
It is specially preset Voltage Drop value in preset torque rate of change in another embodiment on the basis of above-described embodiment
When the corresponding torque rate of change of range, step S11 is specifically included:
S20: regular check Voltage Drop value.
S21: according to range locating for Voltage Drop value, increase torque reference by the corresponding torque rate of change of preset range
Value.
Wherein, Voltage Drop value is value the accounting in voltage rating that the voltage rating of unit subtracts the virtual voltage of unit
Than.
In order to as early as possible restore the Wind turbines of failure to normal condition, too fast increase torque reference value may be right
Unit is caused compared with lossy, especially for set drive chain, will receive biggish impact load.
Therefore, corresponding recovery policy can be set previously according to the actual conditions of Wind turbines failure.Due to wind turbine
The voltage of group can be surveyed, and can be classified according to Wind turbines Voltage Drop value to unit failure.Here Voltage Drop value can
It is calculated by following formula:
Wherein, a is Voltage Drop value, U0For unit voltage rating, U ' is current unit virtual voltage.
Voltage Drop value can be sorted from large to small and be segmented, it is non-overlapping between the range of each Voltage Drop value, often
The change rate of the corresponding torque reference value of a range.In general, Voltage Drop value is bigger, corresponding torque rate of change is smaller,
To reduce the loss to unit.
For step S20, step S10 is accepted, after receiving fault recovery order, real-time or regular check voltage
Fall value.
For step S21, according to range locating for the Voltage Drop value of current unit, by above-mentioned preset range pair
The torque rate of change answered increases torque reference value.And when Voltage Drop value is decreased to preset another range, change torque
Change rate.
The control method of Wind turbines fault recovery provided in an embodiment of the present invention, preset torque rate of change are specially pre-
If Voltage Drop value the corresponding torque rate of change of range, step S11 specifically includes regular check Voltage Drop value and basis
Range locating for Voltage Drop value increases torque reference value by the corresponding torque rate of change of preset range.With Voltage Drop value
The classification of unit failure is divided, Discrete control is carried out to entire failover procedure, it can be in fast quick-recovery unit to normal
Reduce the loss to unit while operating status.
Fig. 3 is a kind of flow chart of the specific embodiment of step S21 provided in an embodiment of the present invention.As shown in figure 3,
On the basis of above-described embodiment, in another embodiment, step S21 is specifically included:
S30: when Voltage Drop value is greater than or equal to first threshold, increase torque reference value by the first torque rate of change.
S31: when Voltage Drop value is less than first threshold and is greater than or equal to second threshold, increase by the first power variation rate
Add active power.
S32: when Voltage Drop value be less than second threshold when, according to the state of unit fault recovery adjust control strategy until
Unit relevant parameter restores to the preset range of normal value.
Wind turbines fault recovery is set as three sections by the embodiment of the present invention, the different control strategy of every section of correspondence.Wherein,
First threshold is greater than second threshold, and the first torque rate of change is less than the second torque rate of change.First threshold, second threshold, first
Torque rate of change and the second torque rate of change can refer to the actual conditions of unit, be set by debugging or emulation experiment, with
Guarantee keeps the fast quick-recovery of Wind turbines to normal condition and smaller to the loss of Wind turbines.
For step S30, when Voltage Drop value is greater than or equal to first threshold, increase by the first torque rate of change
Torque reference value.Unit failure is more serious at this time, needs slowly to restore, and prevents loss set drive chain.It specifically can be according to reality
Border torque feedback value is promoted to the 0.8 of normal value until torque reference value according to the torque rate of change of 50%/s, by revolving speed
Ascent stage increases torque reference value to inhibit revolving speed to rise.
For step S31, need to accelerate the recovery of active power at this time, therefore can be with the change rate of active power
Restored for unit, specifically can set according to the following formula torque reference value to increase:
Wherein, the T is the torque reference value, the P0The specially active power actual value of frequency converter feedback, institute
Stating Δ x is required active power change rate, and the r is that nominal torque is specified turn corresponding in preset torque rotary speed curve
Speed, the r ' are the revolving speed of presently described wind wheel, and the n is constant.
For step S32, when Voltage Drop value is less than second threshold, adjusted according to the state of unit fault recovery
Control strategy is until unit relevant parameter restores to the preset range of normal value.Fig. 4 and Fig. 5 are referred to, it can be by as follows
Mode is implemented:
Fig. 4 is a kind of flow chart of the specific embodiment of step S32 provided in an embodiment of the present invention.As shown in figure 4, step
Rapid S32 is specifically included:
S40: judge whether the actual speed of current wind wheel is greater than rated speed；If it is, entering step S41；If
It is no, then enter step S42.
S41: the power limitation control of preset time is carried out.
S42: increase active power by the second power variation rate until unit relevant parameter restores to the default model of normal value
In enclosing.
Fig. 5 is the flow chart of the specific embodiment of another step S32 provided in an embodiment of the present invention.As shown in figure 5,
Step S32 is specifically included:
S50: judge whether variable pitch angle is zero；If it is, entering step S51；If it is not, then entering step S52.
S51: increase active power by the second power variation rate until unit relevant parameter restores to the default model of normal value
In enclosing.
S52: the power limitation control of preset time is carried out.
Judge whether the actual speed of current wind wheel is greater than rated speed or judges whether variable pitch angle is zero, purpose is all
It is to judge whether unit has enough kinetic energy to carry out power recovery.For which, when variable pitch angle is zero, blade absorbs
Wind energy amount it is minimum.Therefore, it when the actual speed of current wind wheel is greater than rated speed or variable pitch angle is not zero, all represents
There is also enough kinetic energy for unit, can star the power limitation control of 15s or so at this time.Because after the power rise stage,
Torque and revolving speed match substantially, and power and torque all tend towards stability, revolving speed also would not rapid increase, therefore perseverance can be taken
Power control.
If the actual speed of current wind wheel is less than rated speed or variable pitch angle is zero, it is also necessary to press preset second
Power variation rate increases the optimal curve that active power is allowed to level off to preset torque rotary speed, to prevent the decline of rotation stop speed.Due to
The parameters of unit need to be less than the first power variation rate, to reach micro- already close to normal value, the second power variation rate at this time
The purpose of tune.
The control method of Wind turbines fault recovery provided in an embodiment of the present invention will by range locating for Voltage Drop value
The fault recovery of Wind turbines is divided into three stage control, can be while fast quick-recovery Wind turbines to normal level, reduction pair
The loss of Wind turbines extends the service life of Wind turbines.
Fig. 6 is a kind of structural schematic diagram of the control equipment of Wind turbines fault recovery provided in an embodiment of the present invention.Such as
Shown in Fig. 6, it may include one or more which, which can generate bigger difference because configuration or performance are different,
Processor (central processing units, CPU) 610 (for example, one or more processors) and memory
620, one or more storage application programs 633 or data 632 storage medium 630 (such as one or more sea
Amount storage equipment).Wherein, memory 620 and storage medium 630 can be of short duration storage or persistent storage.Storage is stored in be situated between
The program of matter 630 may include one or more modules (diagram does not mark), and each module may include to computing device
In series of instructions operation.Further, processor 610 can be set to communicate with storage medium 630, in Wind turbines
The series of instructions operation in storage medium 630 is executed in the control equipment 600 of fault recovery.
The control equipment 600 of Wind turbines fault recovery can also include one or more power supplys 640, one or one
A above wired or wireless network interface 650, one or more input/output interfaces 660, and/or, one or one with
Upper operating system 631, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM etc..
Step in the control method of Wind turbines fault recovery described in above-mentioned Fig. 1 to Fig. 5 is by Wind turbines failure
The control equipment of recovery is based on the structure shown in fig. 6 and realizes.
It is apparent to those skilled in the art that for convenience and simplicity of description, the wind-powered electricity generation of foregoing description
The control equipment of unit fault recovery and the specific work process of computer readable storage medium can be implemented with reference to preceding method
Corresponding process in example, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed method, equipment and computer-readable
Storage medium may be implemented in other ways.For example, apparatus embodiments described above are merely indicative, example
Such as, the division of module, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple
Module or component can be combined or can be integrated into another system, or some features can be ignored or not executed.It is another
Point, shown or discussed mutual coupling, direct-coupling or communication connection can be through some interfaces, device or
The indirect coupling or communication connection of module can be electrical property, mechanical or other forms.Module can as illustrated by the separation member
It is physically separated with being or may not be, the component shown as module may or may not be physics mould
Block, it can it is in one place, or may be distributed on multiple network modules.It can be selected according to the actual needs
In some or all of the modules achieve the purpose of the solution of this embodiment.
It, can also be in addition, can integrate in a processing module in each functional module in each embodiment of the application
It is that modules physically exist alone, can also be integrated in two or more modules in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.
If integrated module is realized and when sold or used as an independent product in the form of software function module, can
To be stored in a computer readable storage medium.Based on this understanding, the technical solution of the application substantially or
Say that all or part of the part that contributes to existing technology or the technical solution can embody in the form of software products
Out, which is stored in a storage medium, including some instructions are used so that a computer equipment
The whole of (can be personal computer, funcall device or the network equipment etc.) execution each embodiment method of the application
Or part steps.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory,
ROM), random access memory (Random Access Memory, RAM), magnetic or disk etc. are various can store program
The medium of code.
It to a kind of control method of Wind turbines fault recovery provided by the present invention, equipment and computer-readable deposits above
Storage media is described in detail.Each embodiment is described in a progressive manner in specification, and each embodiment stresses
Be the difference from other embodiments, the same or similar parts in each embodiment may refer to each other.For implementing
For device disclosed in example, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place ginseng
See method part illustration.It should be pointed out that for those skilled in the art, not departing from original of the invention
, can be with several improvements and modifications are made to the present invention under the premise of reason, these improvement and modification also fall into right of the present invention and want
In the protection scope asked.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Claims (8)
1. a kind of control method of Wind turbines fault recovery characterized by comprising
After Wind turbines break down, the signal of fault recovery order is checked；
After receiving the fault recovery order, increase torque reference value by preset torque rate of change until unit correlation is joined
Number restores to preset range；
Wherein, the relevant parameter is specially active power, torque and revolving speed.
2. control method according to claim 1, which is characterized in that the preset torque rate of change is specially preset
The corresponding torque rate of change of the range of Voltage Drop value；
Correspondingly, described specifically included by preset torque rate of change increase torque reference value:
Voltage Drop value described in regular check；
According to range locating for the Voltage Drop value, by the preset range corresponding torque rate of change increase torque
Given value；
Wherein, the Voltage Drop value is that the voltage rating of the unit subtracts the value of the virtual voltage of the unit in the volume
Accounting in constant voltage.
3. control method according to claim 2, which is characterized in that described to press the corresponding torque change of the preset range
Rate increases the torque reference value and specifically includes:
When the Voltage Drop value is greater than or equal to first threshold, increase the torque reference value by the first torque rate of change；
When the Voltage Drop value is less than the first threshold and is greater than or equal to second threshold, increase by the first power variation rate
Add the active power；
When the Voltage Drop value is less than the second threshold, control strategy is adjusted according to the state of the unit fault recovery
Until the unit relevant parameter restores to the preset range of the normal value.
4. control method according to claim 3, which is characterized in that the state tune according to the unit fault recovery
Whole control strategy is until the unit relevant parameter restores to the preset range of the normal value to specifically include:
Judge whether the actual speed of current wind wheel is greater than rated speed；
If it is, carrying out the power limitation control of preset time；
If it is not, then increase the active power by the second power variation rate until the unit relevant parameter restore to it is described just
In the preset range of constant value.
5. control method according to claim 3, which is characterized in that the state tune according to the unit fault recovery
Whole control strategy is until the unit relevant parameter restores to the preset range of the normal value to specifically include:
Judge whether variable pitch angle is zero；
If it is, increasing the active power by second power variation rate until the unit relevant parameter restores to institute
It states in the preset range of normal value；
If it is not, then carrying out the power limitation control of the preset time.
6. according to the described in any item control methods of claim 3-5, which is characterized in that increasing the active power is specially root
The torque reference value is set according to following formula to increase the active power:
Wherein, the T is the torque reference value, the P0The specially active power actual value of frequency converter feedback, the Δ x
For required active power change rate, the r is the corresponding rated speed of nominal torque, and the r ' is turning for presently described wind wheel
Speed, the n are constant.
7. a kind of control equipment of Wind turbines fault recovery characterized by comprising
Memory, for storing instruction, described instruction include the control of any one of claim 1-6 Wind turbines fault recovery
The step of method processed；
Processor, for executing the instruction in the memory.
8. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program quilt
It is realized when processor executes as described in claim any one of 1-6 the step of the control method of Wind turbines fault recovery.
Priority Applications (1)
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| CN110992205A (en) * | 2019-11-28 | 2020-04-10 | 中国船舶重工集团海装风电股份有限公司 | State detection method and system for generator winding of wind turbine generator and related components |
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