CN111472929A - Feathering method and device of wind driven generator and wind driven generator set - Google Patents
Feathering method and device of wind driven generator and wind driven generator set Download PDFInfo
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- CN111472929A CN111472929A CN202010329890.6A CN202010329890A CN111472929A CN 111472929 A CN111472929 A CN 111472929A CN 202010329890 A CN202010329890 A CN 202010329890A CN 111472929 A CN111472929 A CN 111472929A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 210000003746 feather Anatomy 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 29
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000004891 communication Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000012790 confirmation Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
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- 238000010248 power generation Methods 0.000 description 1
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/107—Purpose of the control system to cope with emergencies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
- Wind Motors (AREA)
Abstract
The embodiment of the invention relates to a feathering method and device of a wind driven generator and a wind driven generator set. The method comprises the following steps: a variable pitch controller in the wind generating set receives fault information; and the variable pitch controller sends a shutdown instruction according to the fault information and sends the fault information to a main controller in the wind generating set, wherein the shutdown instruction is used for indicating the wind generating set to feather. The invention solves the technical problem of potential safety hazard caused by the fact that feathering of the wind generating set is controlled only by the main controller in the related art and the feathering may not be in time.
Description
Technical Field
The invention relates to the field of wind power generation, in particular to a feathering method and a feathering device of a wind driven generator and a wind driven generator set.
Background
With the continuous increase of the installation capacity and the operation time of the wind generating set, the safety and stability operation importance of the wind generating set is more and more concerned, and the safety problem becomes a main consideration problem in the industry, so that the blades must be ensured to smoothly return after the failure of the fan, if the blades cannot smoothly return, if high wind speed is met, the wind generating set can operate at an overspeed, the light person causes mechanical damage to the components such as a generator, a gear box, blades and the like, and the unit is turned over the tower or the unit is in fire disaster seriously. Therefore, whether the unit blades smoothly return is very important for the safety of the wind generating set.
The direct-current variable-pitch system is one of early batch application technologies, the variable-pitch safety loop switching is mainly switched by relying on one path of safety chain hard-wired signals, the control of the safety chain signals is mainly judged by a master control system, the variable-pitch system does not have any capacity of actively disconnecting the safety chain signals, the technology is not enough to meet the existing operation requirement and safety requirement of a fan along with the increase of the operation time, if the safety chain signals on the slip ring side of the unit are short-circuited, misconnected or short-circuited, the safety chain signals inside the variable pitch cannot be disconnected, and meanwhile, when the master control and variable-pitch communication fails or the power grid inside the variable-pitch system fails, the variable-pitch system cannot execute feathering action, and the unit has the danger of. With the development of the technology, through subsequent technical improvement, a safety control module is arranged in the variable pitch system, and the safety of the variable pitch system is further enhanced by judging the state of the variable pitch controller and the rotating speed of the low-speed shaft. If the rotating speed signal is lost due to the short circuit of the slip ring, the safety module has judgment logic for the over-rotating speed, and for the running unit, the rotating speed monitored by the module is zero, but accurate judgment cannot be made, and the purpose of protection cannot be still realized, so that the main source of the switching signal of the variable pitch system is a main control system, the variable pitch system cannot automatically disconnect a safety chain relay and only serves as an execution unit, and the safety of the wind generating set cannot be completely protected.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a feathering method and device for a wind driven generator and a wind driven generator set, which at least solve the technical problem of potential safety hazard caused by the fact that feathering of the wind driven generator set is controlled only by a main controller in the related art and possibly is not timely.
According to an aspect of an embodiment of the present invention, there is provided a method of feathering a wind turbine, including: a variable pitch controller in the wind generating set receives fault information; and the variable pitch controller sends a shutdown instruction according to the fault information and sends the fault information to a main controller in the wind generating set, wherein the shutdown instruction is used for indicating the wind generating set to feather.
Further, the step of receiving the fault information by the pitch controller in the wind generating set comprises: receiving a detection signal of a variable pitch frequency converter in the wind generating set; the variable pitch controller sending a shutdown instruction according to the fault information comprises the following steps: and accessing the detection signal to the variable pitch controller for detection, and generating the shutdown instruction under the condition that the detection signal is a fault.
Further, the step of receiving the fault information by the pitch controller in the wind generating set comprises: receiving a speed signal of a variable-pitch speed changer in the wind generating set; the variable pitch controller sending a shutdown instruction according to the fault information comprises the following steps: and generating the stop instruction under the condition that the speed value in the speed signal exceeds a preset speed threshold value.
Further, set up the overspeed module in the wheel hub among the wind generating set, the overspeed module with change oar rotational speed ware and be connected still includes: sending the speed signal to the pitch controller and the overspeed module; and sending a stop instruction to an emergency feathering loop in the wind generating set through the overspeed module under the condition that the speed value in the speed signal exceeds the preset speed threshold.
Further, the step of receiving the fault information by the pitch controller in the wind generating set comprises: receiving a fault signal of a power grid monitoring module in the wind generating set; the variable pitch controller sending a shutdown instruction according to the fault information comprises the following steps: and generating the shutdown instruction according to the fault signal.
Further, the grid monitoring module is arranged in an emergency feathering circuit in the wind generating set, and the method further comprises the following steps: and when the power grid monitoring module detects a power grid fault, sending a feathering instruction to the emergency feathering loop, and sending the feathering instruction to the variable pitch controller.
According to another aspect of the embodiments of the present invention, there is also provided a feathering apparatus, applied to a wind generating set, the apparatus including a pitch controller and a main controller, wherein: the variable pitch controller is connected with the main controller and used for receiving fault information, sending a shutdown instruction according to the fault information and sending the fault information to the main controller; and the master controller is used for sending the shutdown instruction according to the fault information.
Further, the pitch controller is used for receiving a detection signal of a pitch frequency converter in the wind generating set; the variable pitch controller is also used for accessing the detection signal to the variable pitch controller for detection, and the shutdown instruction is generated under the condition that the detection signal is a fault.
Further, the pitch controller is used for receiving a speed signal of a pitch speed changer in the wind generating set; the variable pitch controller is further used for generating the shutdown instruction under the condition that the speed value in the speed signal exceeds a preset speed threshold value.
Further, the pitch controller is used for receiving a fault signal of a power grid monitoring module in the wind generating set; the variable pitch controller is further used for generating the shutdown instruction according to the fault signal.
According to another aspect of the embodiments of the present invention, there is also provided a wind turbine generator system including the feathering device as described above.
In the embodiment of the invention, the fault information is received by the variable pitch controller in the wind generating set, then the shutdown instruction is sent by the variable pitch controller according to the fault information, and the fault information is sent to the main controller in the wind generating set, so that the direct feathering control of the variable pitch controller is realized, and meanwhile, the fault information is sent to the main controller, so that the double confirmation of the main controller on the feathering instruction is realized, the risk of overspeed rotating speed in the wind generating set is eliminated, and the technical problem of potential safety hazard caused by the fact that feathering of the wind generating set is controlled only by the main controller in the related technology is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of an alternative method of feathering a wind turbine according to an embodiment of the present invention;
FIG. 2 is a schematic view of an alternative feathering apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be 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.
Example 1
In this embodiment, a pitch controller in the wind generating set is connected to a brake system in the wind generating set, and in a process of opening the pitch of the wind generating set, the main controller sends a pitch opening instruction to the pitch controller, and the pitch controller sends a pitch opening instruction to the brake system, so as to control the wind generating set to open the pitch. In the related art, the pitch controller is only used for the command sent by the wind generating set to open or feather the rotor, and under the condition of communication failure between the pitch controller or the braking system and the main controller, the main controller cannot issue the feather command in time, so that the potential safety hazard that the rotating speed of the wind driven generator is too high is caused.
In view of the above problem, according to an embodiment of the present invention, there is provided a feathering method of a wind turbine, as shown in fig. 1, the method including:
s102, a variable pitch controller in the wind generating set receives fault information;
and S104, the variable pitch controller sends a shutdown instruction according to the fault information and sends the fault information to a main controller in the wind generating set, wherein the shutdown instruction is used for indicating the wind generating set to feather.
In this embodiment, fault information is received by a pitch controller in a wind turbine generator system, where the fault information includes, but is not limited to, an uncontrollable fault in the wind turbine generator system, such as a grid fault, a pitch communication fault, and the like.
And after the variable pitch controller receives the fault information, generating a shutdown instruction and sending the shutdown instruction to a brake system of the wind generating set for feathering of the wind generating set. In addition, the fault information is sent to the main controller, and the main controller can also generate a feathering instruction after receiving the fault information and send the feathering instruction to a braking system of the wind generating set. Specifically, the pitch is changed, and the controller sends a shutdown instruction to the emergency feathering loop so as to disconnect the emergency feathering instruction and realize feathering of the wind generating set.
It should be noted that, according to the embodiment, the variable pitch controller in the wind turbine generator system receives the fault information, then sends the shutdown instruction according to the fault information through the variable pitch controller, and sends the fault information to the master controller in the wind turbine generator system, so that direct feathering control of the variable pitch controller is realized, and meanwhile, the fault information is sent to the master controller, so that double confirmation of the master controller on the feathering instruction is realized, the risk of overspeed rotation in the wind turbine generator system is eliminated, and the technical problem of potential safety hazards caused by the fact that feathering of the wind turbine generator system is controlled only through the master controller in the related art is possible to be out of time is solved.
Optionally, in this embodiment, the receiving the fault information by the pitch controller in the wind turbine generator system includes, but is not limited to: receiving a detection signal of a variable pitch frequency converter in a wind generating set; the pitch controller sending a shutdown instruction according to the fault information comprises the following steps: and connecting the detection signal to a variable pitch controller for detection, and generating a shutdown instruction under the condition that the detection signal is a fault.
Specifically, in one example, the pitch control frequency converter sends a detection signal to the pitch control device every preset time, the pitch control device judges the detection signal, the wind generating set is not interfered when the detection signal is judged to be normal, and the pitch control device generates a shutdown instruction to be sent to a braking system of the wind generating set and sends fault information to the main controller when the detection signal is judged to be fault, namely, the pitch control frequency converter fails to communicate with the main controller.
In another example, the pitch control frequency converter detects self information at preset intervals, when a fault of the wind generating set is detected, for example, when the pitch control frequency converter has a mains supply fault, a fault signal is directly sent to the pitch control device through a backup power supply, and after the pitch control device receives the fault signal of the pitch control frequency converter, a shutdown instruction is generated and sent to a brake system for managing the generating set, and the fault information is sent to the main controller.
Optionally, in this embodiment, the receiving the fault information by the pitch controller in the wind turbine generator system includes: receiving a speed signal of a variable-pitch speed changer in a wind generating set; the pitch controller sending a shutdown instruction according to the fault information comprises the following steps: and generating a shutdown instruction under the condition that the speed value in the speed signal exceeds a preset speed threshold value.
Specifically, the variable pitch controller receives a speed signal of a variable pitch speed changer in the wind generating set, the speed signal comprises a rotating speed value of blades in the wind generating set, and generates a shutdown instruction when the speed value exceeds a preset speed threshold, and sends fault information of which the speed value exceeds the preset speed threshold to the master controller. It should be noted that in the above example, the pitch speed is used to monitor the wind turbine generator system for overspeed faults.
Optionally, in this embodiment, an overspeed module is provided in a hub of a wind turbine, and the connection between the overspeed module and the variable pitch speed gear further includes: sending the speed signal to a variable pitch controller and an overspeed module; and under the condition that the speed value in the speed signal exceeds a preset speed threshold value, sending a stop instruction to an emergency feathering loop in the wind generating set through an overspeed module.
In an actual application scenario, in the process that the variable pitch rotating speed device monitors overspeed faults of the wind generating set and sends the overspeed faults to the variable pitch controller and the main controller, the variable pitch controller and the main controller generate a shutdown instruction, and a certain time is consumed in the middle. In the embodiment, an overspeed module is arranged in a hub of the wind generating set, the overspeed module is connected with a variable pitch speed governor, and under the condition that the wind generating set is overspeed, a stop instruction is directly sent to an emergency feathering loop through the overspeed module so that the wind generating set feathers.
Optionally, in this embodiment, the receiving the fault information by the pitch controller in the wind turbine generator system includes: receiving a fault signal of a power grid monitoring module in a wind generating set; the pitch controller sending a shutdown instruction according to the fault information comprises the following steps: and generating a shutdown command according to the fault signal.
Specifically, if a power grid fault is monitored, a fault signal of the power grid is connected to the variable pitch controller to be detected, the variable pitch controller actively sends an instruction to drive the blades to complete feathering after aiming at the power grid fault and continuing delaying, the self feathering of the variable pitch system before optimization cannot be achieved due to the fact that the fault is monitored, and the detection of the fault by the variable pitch system after optimization can achieve conventional feathering.
Optionally, in this embodiment, the grid monitoring module is disposed in an emergency feathering circuit of the wind turbine generator system, and the method further includes: and when the power grid monitoring module detects a power grid fault, sending a feathering instruction to the emergency feathering loop, and sending the feathering instruction to the variable pitch controller.
Specifically, the power grid monitoring module is connected into an emergency feathering loop of the wind generating set aiming at the power grid fault, when the power grid is powered off, a fault signal is connected into the emergency feathering loop through the power grid monitoring module, an emergency feathering command can be disconnected, and feathering of the wind generating set is achieved.
Through the embodiment, the variable pitch controller in the wind generating set receives the fault information, then the shutdown instruction is sent according to the fault information through the variable pitch controller, the fault information is sent to the main controller in the wind generating set, direct feathering control of the variable pitch controller is achieved, meanwhile, the fault information is sent to the main controller, double confirmation of the main controller on the feathering instruction is achieved, the risk of overspeed of the rotating speed in the wind generating set is eliminated, and the technical problem that potential safety hazards caused by the fact that feathering of the wind generating set is controlled only through the main controller in the related technology is solved.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Example 2
According to an embodiment of the present invention, there is also provided a feathering apparatus for implementing the above-mentioned wind turbine feathering method, as shown in fig. 2, the apparatus includes: the arrangement comprises a pitch controller 20 and a master 22, wherein:
1) the pitch controller 20 is connected with the master controller 22, and is configured to receive fault information, send a shutdown instruction according to the fault information, and send the fault information to the master controller 22;
2) and the master controller 22 is configured to send the shutdown instruction according to the fault information.
The pitch controller 20 is configured to receive a detection signal of a pitch frequency converter in the wind turbine generator system;
the pitch controller 20 is further configured to access the detection signal to the pitch controller for detection, and generate the shutdown instruction when the detection signal is a fault.
Optionally, in this embodiment, the pitch controller 20 is configured to receive a speed signal of a pitch speed changer in the wind turbine generator set; the pitch controller 20 is further configured to generate the shutdown instruction when a speed value in the speed signal exceeds a preset speed threshold.
Optionally, in this embodiment, the pitch controller 20 is configured to receive a fault signal of a grid monitoring module in the wind turbine generator set; the pitch controller 20 is further configured to generate the shutdown instruction according to the fault signal.
Optionally, the specific example in this embodiment may refer to the example described in embodiment 1 above, and this embodiment is not described again here.
Example 3
According to an embodiment of the invention, there is also provided a wind turbine generator system including the feathering device as described above.
Optionally, the specific examples in this embodiment may refer to the examples described in embodiment 1 and embodiment 2, and this embodiment is not described herein again.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The integrated unit in the above embodiments, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in the above computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing one or more computer devices (which may be personal computers, servers, network devices, etc.) to execute all or part of the steps of the method according to the embodiments of the present invention.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed client may be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A method of feathering a wind turbine, comprising:
a variable pitch controller in the wind generating set receives fault information;
the variable pitch controller sends a shutdown instruction according to the fault information and sends the fault information to a master controller in the wind generating set,
wherein the shutdown command is used for indicating the wind generating set to feather.
2. The method of claim 1,
the method for receiving the fault information by the variable pitch controller in the wind generating set comprises the following steps:
receiving a detection signal of a variable pitch frequency converter in the wind generating set;
the variable pitch controller sending a shutdown instruction according to the fault information comprises the following steps:
and accessing the detection signal to the variable pitch controller for detection, and generating the shutdown instruction under the condition that the detection signal is a fault.
3. The method of claim 1,
the method for receiving the fault information by the variable pitch controller in the wind generating set comprises the following steps:
receiving a speed signal of a variable-pitch speed changer in the wind generating set;
the variable pitch controller sending a shutdown instruction according to the fault information comprises the following steps:
and generating the stop instruction under the condition that the speed value in the speed signal exceeds a preset speed threshold value.
4. The method of claim 3, wherein providing an overspeed module within a hub in the wind turbine generator set, the overspeed module coupled to the pitch tachometer further comprises:
sending the speed signal to the pitch controller and the overspeed module;
and sending a stop instruction to an emergency feathering loop in the wind generating set through the overspeed module under the condition that the speed value in the speed signal exceeds the preset speed threshold.
5. The method of claim 1,
the method for receiving the fault information by the variable pitch controller in the wind generating set comprises the following steps:
receiving a fault signal of a power grid monitoring module in the wind generating set;
the variable pitch controller sending a shutdown instruction according to the fault information comprises the following steps:
and generating the shutdown instruction according to the fault signal.
6. The method of claim 5, wherein the grid monitoring module is provided in an emergency feathering circuit in the wind turbine generator set, the method further comprising:
and when the power grid monitoring module detects a power grid fault, sending a feathering instruction to the emergency feathering loop, and sending the feathering instruction to the variable pitch controller.
7. The utility model provides a feathering device, is applied to among the wind generating set, its characterized in that, the device includes becomes oar controller and master controller, wherein:
the variable pitch controller is connected with the main controller and used for receiving fault information, sending a shutdown instruction according to the fault information and sending the fault information to the main controller;
and the master controller is used for sending the shutdown instruction according to the fault information.
8. The apparatus of claim 7,
the variable pitch controller is used for receiving a detection signal of a variable pitch frequency converter in the wind generating set;
the variable pitch controller is also used for accessing the detection signal to the variable pitch controller for detection, and the shutdown instruction is generated under the condition that the detection signal is a fault.
9. The apparatus of claim 7,
the pitch controller is used for receiving a speed signal of a pitch speed changer in the wind generating set;
the variable pitch controller is further used for generating the shutdown instruction under the condition that the speed value in the speed signal exceeds a preset speed threshold value.
10. The apparatus of claim 7,
the pitch controller is used for receiving a fault signal of a power grid monitoring module in the wind generating set;
the variable pitch controller is further used for generating the shutdown instruction according to the fault signal.
11. A wind park comprising a feathering apparatus as claimed in any one of claims 7 to 10.
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| CN202010329890.6A CN111472929B (en) | 2020-04-24 | 2020-04-24 | Feathering method and device of wind driven generator and wind driven generator set |
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| CN202010329890.6A CN111472929B (en) | 2020-04-24 | 2020-04-24 | Feathering method and device of wind driven generator and wind driven generator set |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112145372A (en) * | 2020-09-09 | 2020-12-29 | 上海电气风电集团股份有限公司 | Test method and control device of safety chain and wind driven generator thereof |
| CN115234448A (en) * | 2022-07-25 | 2022-10-25 | 东方电气新能科技(成都)有限公司 | Monitoring method and device for preventing double-fed fan from fast blade retracting failure |
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| CN106224161A (en) * | 2016-07-19 | 2016-12-14 | 沈阳华创风能有限公司 | Independent pitch system and change oar method with controller strategy |
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| CN106762414A (en) * | 2016-11-23 | 2017-05-31 | 北京华电天仁电力控制技术有限公司 | A kind of board-like Programmable Logic Controller for variable pitch control system of wind generating |
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| CN112145372A (en) * | 2020-09-09 | 2020-12-29 | 上海电气风电集团股份有限公司 | Test method and control device of safety chain and wind driven generator thereof |
| CN112145372B (en) * | 2020-09-09 | 2024-05-14 | 上海电气风电集团股份有限公司 | Safety chain testing method, control device and wind driven generator thereof |
| CN115234448A (en) * | 2022-07-25 | 2022-10-25 | 东方电气新能科技(成都)有限公司 | Monitoring method and device for preventing double-fed fan from fast blade retracting failure |
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