阅读说明：本技术 一种风力发电机组偏航容错控制方法、设备及存储介质 (Yaw fault-tolerant control method and equipment for wind generating set and storage medium ) 是由 刘亚林 唐伟 罗元宏 张朝远 杨垒 汪航 文茂诗 王灿 邓川林 邵佩泽 唐永春 于 2019-11-29 设计创作，主要内容包括：本申请公开了一种风力发电机组偏航容错控制方法、设备及存储介质,该方法包括：在收到偏航请求后正常偏航运行过程中,监测偏航系统是否出现故障；若偏航系统故障时,监测偏航系统故障是否是单套偏航驱动轴故障；若是单套偏航驱动轴故障,则判断该套偏航驱动轴是否为从驱动轴；若是,则切出该从驱动轴,触发偏航系统继续容错偏航；若否,则触发偏航系统停止偏航。本申请当单套偏航驱动轴且为从驱动轴发生故障时,将其切除,其余偏航驱动轴正常容错运行,这样可以保障风力发电机组在某些故障状态下容错运行,实现平稳偏航,提升偏航系统的精准度,同时提高风电机组的利用效率以提升发电量,减少因为偏航系统故障导致的停止运行。(The application discloses a yaw fault-tolerant control method, equipment and a storage medium for a wind generating set, wherein the method comprises the following steps: monitoring whether a yaw system has a fault or not in the normal yaw running process after receiving a yaw request; if the yaw system fails, monitoring whether the yaw system fails and whether the single set of yaw drive shaft fails; if the single set of yaw driving shaft fails, judging whether the set of yaw driving shaft is a slave driving shaft or not; if yes, the slave driving shaft is switched out, and a yaw system is triggered to continue fault-tolerant yaw; if not, triggering the yaw system to stop yawing. This application is when single set of driftage drive shaft and for following the drive shaft when breaking down, with its excision, the normal fault-tolerant operation of all the other driftage drive shafts, can ensure wind generating set fault-tolerant operation under certain fault condition like this, realizes steady driftage, promotes yaw system's precision, improves wind generating set's utilization efficiency simultaneously in order to promote the generated energy, reduces because the shutdown that the system trouble of driftage leads to.)

1. A yaw fault-tolerant control method of a wind generating set is characterized by comprising the following steps:

monitoring whether a yaw system has a fault or not in the normal yaw running process after receiving a yaw request;

if the yaw system fails, monitoring whether the yaw system fails and whether a single set of yaw drive shaft fails;

if the yaw system fault is a single set of yaw driving shaft fault, judging whether the yaw driving shaft is a slave driving shaft;

if yes, switching out the slave driving shaft, and triggering the yaw system to continue fault-tolerant yaw; if not, entering a fault-tolerant distribution mode, and triggering the yaw system to stop yawing.

2. The wind generating set yaw fault tolerant control method of claim 1, wherein the single set of yaw drive shaft faults comprises: the method comprises the following steps of yaw motor overtemperature fault, single frequency converter communication fault and single frequency converter reporting fault.

3. The yaw fault-tolerant control method of the wind generating set according to claim 2, wherein the reporting of the fault by the frequency converter comprises: overload of a frequency converter, overload of a yaw motor, output phase loss of the frequency converter, overheating of a frequency converter module, communication abnormity of the frequency converter, fault of a rotating speed measuring module, read-write abnormity of a register, ground short circuit of the yaw motor and interphase short circuit.

4. The wind generating set yaw fault tolerant control method of claim 3, further comprising:

if the yaw system fault is a single set of yaw drive shaft fault, when the yaw system fault is monitored to stop yawing and the yaw motor is braked, the function of the yaw drive shaft is redistributed, and a fault-tolerant operation state is entered until a target yaw angle is completed.

5. The wind generating set yaw fault tolerant control method of claim 4, further comprising:

and if the yaw system fault is a single set of yaw driving shaft fault and the yaw driving shaft is a slave driving shaft, triggering the yaw system to continue to enter fault-tolerant yaw when a yaw request is received again and the slave driving shaft fault is not eliminated.

6. The wind generating set yaw fault tolerant control method of claim 5, further comprising:

and if the yaw system fails, the yaw system is triggered to stop yawing, fault-tolerant operation is not required, and yawing is continued after the failure is eliminated.

7. The wind generating set yaw fault tolerant control method of claim 6, wherein when the yaw system fault is not a single set of yaw drive shaft fault, the yaw system fault comprises: yaw drive shaft excess fault, rectifier fault, yaw speed fault, yaw motor brake fault, rectifier communication anomaly, and master controller communication anomaly.

8. The wind generating set yaw fault tolerant control method of claim 5, further comprising:

when the yaw system is subjected to fault-tolerant yaw, sending a fault-tolerant yaw warning state of the yaw system to a main controller of the wind turbine generator system;

and triggering the yaw system to normally yaw after the slave drive shaft fault elimination is monitored.

9. A wind park yaw fault tolerant control apparatus comprising a processor and a memory, wherein the processor when executing a computer program stored in the memory implements a wind park yaw fault tolerant control method according to any of claims 1 to 8.

10. A computer-readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements a wind turbine generator set yaw fault tolerance control method according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of wind power generation, in particular to a yaw fault-tolerant control method and equipment of a wind generating set and a storage medium.

Background

At present, a yaw system of a wind generating set generally comprises a plurality of sets of independent yaw driving shafts, each set of yaw driving shaft comprises a yaw motor, a yaw speed reducer, a yaw driving control loop and other parts, and because the number of the parts of each set of yaw driving shaft is large, the failure probability is high, when a single set of independent yaw driving shaft fails, the unit yaw system can be failed and stopped to operate, and the machine needs to be shut down, overhauled and troubleshooting.

Therefore, how to reduce the shutdown of the yawing system of the unit caused by the fault is a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of this, the present invention provides a yaw fault-tolerant control method, device and storage medium for a wind turbine generator system, which can implement fault-tolerant operation of the wind turbine generator system in some fault states, and improve the availability of a yaw system of the wind turbine generator system. The specific scheme is as follows:

a yaw fault-tolerant control method of a wind generating set comprises the following steps:

monitoring whether a yaw system has a fault or not in the normal yaw running process after receiving a yaw request;

if the yaw system fails, monitoring whether the yaw system fails and whether a single set of yaw drive shaft fails;

if the yaw system fault is a single set of yaw driving shaft fault, judging whether the yaw driving shaft is a slave driving shaft;

if yes, switching out the slave driving shaft, and triggering the yaw system to continue fault-tolerant yaw; if not, entering a fault-tolerant distribution mode, and triggering the yaw system to stop yawing.

Preferably, in the yaw fault-tolerant control method of the wind turbine generator system according to the embodiment of the present invention, the single set of yaw drive shaft faults include: the method comprises the following steps of yaw motor overtemperature fault, single frequency converter communication fault and single frequency converter reporting fault.

Preferably, in the yaw fault-tolerant control method of the wind turbine generator system provided in the embodiment of the present invention, the reporting the fault by the frequency converter includes: overload of a frequency converter, overload of a yaw motor, output phase loss of the frequency converter, overheating of a frequency converter module, communication abnormity of the frequency converter, fault of a rotating speed measuring module, read-write abnormity of a register, ground short circuit of the yaw motor and interphase short circuit.

Preferably, in the yaw fault-tolerant control method of a wind turbine generator system provided in the embodiment of the present invention, the method further includes:

if the yaw system fault is a single set of yaw drive shaft fault, when the yaw system fault is monitored to stop yawing and the yaw motor is braked, the function of the yaw drive shaft is redistributed, and a fault-tolerant operation state is entered until a target yaw angle is completed.

Preferably, in the yaw fault-tolerant control method of a wind turbine generator system provided in the embodiment of the present invention, the method further includes:

and if the yaw system fault is a single set of yaw driving shaft fault and the yaw driving shaft is a slave driving shaft, triggering the yaw system to continue to enter fault-tolerant yaw when a yaw request is received again and the slave driving shaft fault is not eliminated.

Preferably, in the yaw fault-tolerant control method of a wind turbine generator system provided in the embodiment of the present invention, the method further includes:

and if the yaw system fails, the yaw system is triggered to stop yawing, fault-tolerant operation is not required, and yawing is continued after the failure is eliminated.

Preferably, in the yaw fault-tolerant control method of the wind turbine generator system according to the embodiment of the present invention, when the yaw system fault is not a single set of yaw drive shaft fault, the yaw system fault includes: yaw drive shaft excess fault, rectifier fault, yaw speed fault, yaw motor brake fault, rectifier communication anomaly, and master controller communication anomaly.

Preferably, in the yaw fault-tolerant control method of a wind turbine generator system provided in the embodiment of the present invention, the method further includes:

when the yaw system is subjected to fault-tolerant yaw, sending a fault-tolerant yaw warning state of the yaw system to a main controller of the wind turbine generator system;

and triggering the yaw system to normally yaw after the slave drive shaft fault elimination is monitored.

The embodiment of the invention also provides yaw fault-tolerant control equipment of the wind generating set, which comprises a processor and a memory, wherein the processor executes a computer program stored in the memory to realize the yaw fault-tolerant control method of the wind generating set provided by the embodiment of the invention.

Embodiments of the present invention further provide a computer-readable storage medium for storing a computer program, where the computer program, when executed by a processor, implements the yaw fault-tolerant control method of a wind turbine generator system according to the embodiments of the present invention.

According to the technical scheme, the yaw fault-tolerant control method, the yaw fault-tolerant control equipment and the storage medium of the wind generating set provided by the invention comprise the following steps: monitoring whether a yaw system has a fault or not in the normal yaw running process after receiving a yaw request; if the yaw system fails, monitoring whether the yaw system fails and whether the single set of yaw drive shaft fails; if the yaw system fault is a single set of yaw driving shaft fault, judging whether the set of yaw driving shafts are slave driving shafts; if so, switching out the slave drive shaft with the fault, and triggering the yaw system to continue fault-tolerant yaw; if not, entering a fault-tolerant distribution mode and triggering a yaw system to stop yawing.

According to the invention, when a single set of yaw driving shafts of the yaw system has a fault and the set of yaw driving shafts are the slave driving shafts, the slave driving shafts with the fault are switched out, and the other yaw driving shafts normally run in a fault-tolerant manner, so that the fault-tolerant operation of the wind generating set in certain fault states can be ensured, the stable yaw is realized, the accuracy of the yaw system is improved, meanwhile, the utilization efficiency of the wind generating set is improved to improve the generated energy, and the stop running caused by the fault of the yaw system is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a flowchart of a yaw fault-tolerant control method for a wind turbine generator system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a yaw system in the yaw fault-tolerant control method for the wind generating set according to the embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a yaw fault-tolerant control method of a wind generating set, which comprises the following steps as shown in figure 1:

s101, after receiving a yaw request, normally performing yaw operation;

s102, monitoring whether the yaw system has faults or not;

if yes, go to step S103;

s103, monitoring whether the yaw system fault is a single yaw driving shaft fault;

if yes, go to step S104;

s104, judging whether the set of yaw driving shaft is a slave driving shaft or not;

if yes, go to step S105; if not, executing step S106;

s105, cutting out the slave driving shaft with the fault, and triggering the yaw system to continue fault-tolerant yaw;

and S106, entering a fault-tolerant distribution mode, and triggering a yaw system to stop yawing.

In the yaw fault-tolerant control method for the wind generating set provided by the embodiment of the invention, when a single set of yaw driving shafts of the yaw system has a fault and the set of yaw driving shafts are the slave driving shafts, the slave driving shafts with the fault are switched out, and the other yaw driving shafts normally run in a fault-tolerant manner, so that the fault-tolerant operation of the wind generating set in some fault states can be ensured, the stable yaw is realized, the accuracy of the yaw system is improved, the utilization efficiency of the wind generating set is improved to improve the generating capacity, and the stop operation caused by the fault of the yaw system is reduced.

It can be understood that, as shown in fig. 2, the hydraulic brake is fully released during the yawing action, and the yawing system is based on the fact that the yawing motor provides electromagnetic damping, and is specifically composed of a yawing controller, a yawing motor, a frequency converter, a yawing speed reducer, a yawing sensor, a hydraulic brake system and the like. Detecting faults of a yaw system (comprising parts such as a yaw motor and a frequency converter) by a yaw controller in a wind generating set in a normal yaw operation process according to instructions of a main controller; when the yawing system is in normal operation, the yawing drive shaft functions are set as follows: 1 main driving shaft, 1 damping control shaft, and the rest are auxiliary driving shafts. The master drive shaft is the drive shaft that sets the yaw motor speed, the slave drive shaft is the drive shaft that follows the master drive shaft speed, and the damping control shaft is the drive shaft that provides yaw holding damping. When the yaw system is fault-tolerant to operate, the yaw drive shaft functions are also allocated as: 1 main driving shaft, 1 damping control shaft, and the rest are auxiliary driving shafts.

In a specific implementation, in the yaw fault-tolerant control method for the wind turbine generator system provided by the embodiment of the present invention, the single set of yaw drive shaft faults may include: the method comprises the following steps of yaw motor overtemperature fault, single frequency converter communication fault and single frequency converter reporting fault. When the yaw controller detects such a failure of a single set of yaw drive shafts, a fault tolerant operating state may be entered.

It should be noted that the yaw motor in the invention is an alternating current asynchronous motor, specifically, the yaw motor is a frequency converter speed regulation asynchronous motor with a rotating speed measuring module; each yaw motor is controlled and driven by an independent two-quadrant frequency converter.

Further, in a specific implementation, in the yaw fault-tolerant control method of the wind turbine generator system provided in the embodiment of the present invention, reporting a fault by the frequency converter may include: overload of a frequency converter, overload of a yaw motor, output phase loss of the frequency converter, overheating of a frequency converter module, communication abnormity of the frequency converter, fault of a rotating speed measuring module, read-write abnormity of a register, ground short circuit of the yaw motor and interphase short circuit. The fault reported by the frequency converter may also include other faults, which are not described herein.

In a specific implementation, in the yaw fault-tolerant control method of the wind turbine generator system provided in the embodiment of the present invention, the method may further include:

if the yaw system fault is a single set of yaw drive shaft fault, when the yaw system fault is monitored to stop the yaw and the yaw motor is braked, the functions of the yaw drive shafts (1 main drive shaft, 1 damping control shaft and the rest of the drive shafts) are redistributed, the yaw is restarted, and the fault-tolerant operation state is entered until the target yaw angle is completed.

In a specific implementation, in the yaw fault-tolerant control method of the wind turbine generator system provided in the embodiment of the present invention, the method may further include:

and if the yaw system fault is a single set of yaw driving shaft fault and the set of yaw driving shafts is a slave driving shaft, triggering the yaw system to continue to enter fault-tolerant yaw when the yaw request is received again and the slave driving shaft fault is not eliminated.

Further, in a specific implementation, in the yaw fault-tolerant control method of the wind turbine generator system provided in the embodiment of the present invention, the method may further include:

if the yaw system is not in fault with the single yaw driving shaft, the yaw system is triggered to stop yaw, fault-tolerant operation is not required, and the yaw is continued after the fault is eliminated.

In a specific implementation, in the yaw fault-tolerant control method for a wind turbine generator system provided in the embodiment of the present invention, when the yaw system fault is not a single yaw drive shaft fault, the yaw system fault may include: yaw drive shaft excess fault (faulty shaft more than 2), rectifier fault, yaw speed fault, yaw motor brake fault, rectifier communication anomaly, main controller communication anomaly. That is, when the yaw controller monitors that the yaw system has the faults, the yaw system stops yawing, fault-tolerant operation is not required, and the yaw can be continued after the faults are eliminated.

Further, in a specific implementation, in the yaw fault-tolerant control method of the wind turbine generator system provided in the embodiment of the present invention, the method may further include:

when the yaw system is subjected to fault-tolerant yaw, a yaw system fault-tolerant yaw warning state is sent to a main controller of the wind turbine generator; and when the slave drive shaft fault is eliminated, triggering the yaw system to normally yaw.

Correspondingly, the embodiment of the invention also discloses yaw fault-tolerant control equipment of the wind generating set, which comprises a processor and a memory; when the processor executes the computer program stored in the memory, the yaw fault-tolerant control method of the wind generating set disclosed by the previous embodiment is realized.

For more specific processes of the above method, reference may be made to corresponding contents disclosed in the foregoing embodiments, and details are not repeated here.

Further, the present invention also discloses a computer readable storage medium for storing a computer program; the computer program is used for realizing the yaw fault-tolerant control method of the wind generating set disclosed in the foregoing when being executed by the processor.

For more specific processes of the above method, reference may be made to corresponding contents disclosed in the foregoing embodiments, and details are not repeated here.

The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device, the equipment and the storage medium disclosed by the embodiment correspond to the method disclosed by the embodiment, so that the description is relatively simple, and the relevant points can be referred to the method part for description.

Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The embodiment of the invention provides a yaw fault-tolerant control method, equipment and a storage medium for a wind generating set, wherein the yaw fault-tolerant control method comprises the following steps: monitoring whether a yaw system has a fault or not in the normal yaw running process after receiving a yaw request; if the yaw system fails, monitoring whether the yaw system fails and whether the single set of yaw drive shaft fails; if the yaw system fault is a single set of yaw driving shaft fault, judging whether the set of yaw driving shafts are slave driving shafts; if so, switching out the slave drive shaft with the fault, and triggering the yaw system to continue fault-tolerant yaw; if not, entering a fault-tolerant distribution mode and triggering a yaw system to stop yawing. When a single set of yaw driving shaft of the yaw system breaks down and the set of yaw driving shaft is the slave driving shaft, the broken slave driving shaft is cut out, and the other yaw driving shafts run normally in a fault-tolerant mode, so that fault-tolerant running of the wind generating set in certain fault states can be guaranteed, stable yaw is realized, the accuracy of the yaw system is improved, meanwhile, the utilization efficiency of the wind generating set is improved to improve the generated energy, and running stop caused by faults of the yaw system is reduced.

Finally, it is further noted that, herein, relational terms are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The yaw fault-tolerant control method, the yaw fault-tolerant control equipment and the yaw fault-tolerant control storage medium of the wind generating set provided by the invention are described in detail, specific examples are applied in the method to explain the principle and the implementation mode of the yaw fault-tolerant control method, and the description of the embodiments is only used for helping to understand the method and the core idea of the yaw fault-tolerant control method; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.