Fan yaw torque limiter detection method, device, equipment and storage medium

Abstract

The application relates to the field of equipment detection, and discloses a fan yaw torque limiter detection method, device, equipment and storage medium, the method obtains the output power of a yaw motor and the output rotating speed of a friction type torque limiter; when the output rotating speed of the friction type torque limiter is zero, the friction type torque limiter is in an overload protection state; whether the output power is in a preset power threshold range is judged; if not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is sent. Since the working state of the friction type torque limiter is judged through the output rotating speed of the friction type torque limiter, and whether the friction type torque limiter is invalid is judged according to the output power of the yaw fan, the running state of the friction type torque limiter in the fan yaw system is timely detected, it is not necessary to rely on technical personnel to judge according to the running state of the fan yaw system, the operation and maintenance cost is reduced, and the stability of the fan yaw system is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of device detection, and in particular to a yaw torque limiter detection method and device for a wind turbine, a wind turbine, and a storage medium. BACKGROUND

[0002] There are various types of torque limiters for yaw systems of wind turbines, and friction type torque limiters are widely used in yaw systems of wind turbines due to their advantages such as smooth transmission, large transmission torque, no need for additional reset action after overload protection, and small size. The friction type torque limiter for the yaw system of the wind turbine mainly transmits torque and provides overload protection through a friction coupling pair. When the load is too large, the friction coupling pair will slip, disconnecting the yaw motor output end and the gear reducer input end connected thereto, thereby providing an overload protection function. During the continuous slip protection process of the friction coupling pair, wear will also occur, resulting in a decrease in the friction coefficient and a decrease in the transmission torque capacity, thereby prematurely causing the slip phenomenon when the wind load does not reach the load that the yaw system can withstand, causing the torque limiter to fail in overload protection. In this case, if the failure of the friction type torque limiter cannot be found in time, the wind energy cannot be effectively utilized, the wind power production is reduced, and the stable operation of the yaw system is also adversely affected.

[0003] At present, there is still a lack of effective online detection method for the failure of the friction type torque limiter, and the judgment is mainly made by technical personnel according to the operating state of the yaw system, which has problems such as lag and misjudgment, thereby increasing the operation and maintenance cost and reducing the operating stability of the yaw system.

[0004] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0005] The main purpose of the present application is to provide a yaw torque limiter detection method, device, equipment and storage medium for a wind turbine, which aims to solve the technical problem that there is still a lack of effective online detection method for the failure of the friction type torque limiter in the prior art, and the judgment is mainly made by technical personnel according to the operating state of the yaw system, which has problems such as lag and misjudgment, thereby increasing the operation and maintenance cost and reducing the operating stability of the yaw system.

[0006] To achieve the above purpose, the present application provides a yaw torque limiter detection method for a wind turbine, which is used for real-time detection of the operating state of the friction type torque limiter of the yaw system of the wind turbine; the method comprises the following steps:

[0007] Obtaining the output power of the yaw motor and the output speed of the friction type torque limiter;

[0008] When the output rotating speed of the friction type torque limiter is zero, the friction type torque limiter is in an overload protection state;

[0009] determining whether the output power is within a preset power threshold range;

[0010] If not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is issued.

[0011] Optionally, after the step of acquiring the output power of the yaw motor and the output rotating speed of the friction type torque limiter, the method further comprises:

[0012] When the output rotating speed of the friction type torque limiter is not zero, the friction type torque limiter does not perform overload protection;

[0013] determining whether the output power is not greater than a first maximum output power;

[0014] If not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is issued to prompt a technician to timely maintain or replace the friction type torque limiter.

[0015] Optionally, after the step of determining whether the output power is not greater than a first maximum output power, the method further comprises:

[0016] If yes, it indicates that the friction type torque limiter is in a normal transmission state;

[0017] feedback information that the state is normal to a real-time display system for real-time display.

[0018] Optionally, the step of acquiring the output power of the yaw motor and the output rotating speed of the friction type torque limiter comprises:

[0019] acquiring, based on a current-voltage detector, a voltage and a current of the yaw motor in real time;

[0020] calculating the output power of the yaw motor according to the voltage and the current of the yaw motor;

[0021] acquiring, based on a speed sensor, the output rotating speed of the friction type torque limiter.

[0022] Optionally, a calculation formula of the output power of the yaw motor is:

[0023]

[0024] wherein U is the output voltage of the yaw motor, I is the output current of the yaw motor, and cosα is the power factor of the yaw motor.

[0025] Optionally, if no, the friction torque limiter fails, and a step of issuing a friction torque limiter failure warning is performed, including:

[0026] If no, it indicates that the friction torque limiter fails;

[0027] The state failure information is fed back to a real-time display system for real-time display;

[0028] A friction torque limiter failure warning is issued to prompt a technician to timely maintain or replace the friction torque limiter.

[0029] Optionally, after the step of judging whether the output power is within a preset power threshold range, including:

[0030] If yes, it indicates that the friction torque limiter is in a normal overload protection state;

[0031] Normal information is fed back to a real-time display system for display.

[0032] In addition, to achieve the above-mentioned purpose, the application further provides a wind turbine yaw torque limiter detection device, which comprises:

[0033] A data acquisition module is configured to acquire the output power of the yaw motor and the output speed of the friction torque limiter;

[0034] A state judgment module is configured to judge that the friction torque limiter is in an overload protection state when the output speed of the friction torque limiter is zero;

[0035] A data judgment module is configured to judge whether the output power is within a preset power threshold range;

[0036] A feedback alarm module is configured to, if no, the friction torque limiter fails, and a friction torque limiter failure warning is issued.

[0037] In addition, to achieve the above-mentioned purpose, the application further provides a wind turbine yaw torque limiter detection device, which comprises a memory, a processor, and a wind turbine yaw torque limiter detection program stored in the memory and executable on the processor, and the wind turbine yaw torque limiter detection program is configured to implement the steps of the wind turbine yaw torque limiter detection as described above.

[0038] In addition, to achieve the above-mentioned purpose, the application further provides a storage medium, and the storage medium stores a wind turbine yaw torque limiter detection program, and the wind turbine yaw torque limiter detection program implements the steps of the wind turbine yaw torque limiter detection method as described above when executed by a processor.

[0039] The yaw motor output power and the output rotating speed of the friction type torque limiter are acquired; when the output rotating speed of the friction type torque limiter is zero, the friction type torque limiter is in an overload protection state; whether the output power is in a preset power threshold range is judged; if not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is sent. The working state of the friction type torque limiter is judged through the output rotating speed of the friction type torque limiter, and whether the friction type torque limiter is invalid is judged according to the output power of the yaw fan, so that the running state of the friction type torque limiter in the fan yaw system is timely detected online, without relying on technical personnel to judge according to the running state of the fan yaw system, the operation and maintenance cost is reduced, and the stability of the fan yaw system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a structural schematic diagram of a fan yaw torque limiter detection device of a hardware running environment related to an embodiment scheme of the present application.

[0041] Figure 2 is a flowchart of a first embodiment of a fan yaw torque limiter detection method of the present application.

[0042] Figure 3 is a detection principle diagram of the fan yaw torque limiter detection method of the present application.

[0043] Figure 4 is a flowchart of a second embodiment of the fan yaw torque limiter detection method of the present application.

[0044] Figure 5 is a detection flowchart of the fan yaw torque limiter detection method of the present application.

[0045] Figure 6 is a structural block diagram of a first embodiment of a fan yaw torque limiter detection device of the present application.

[0046] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0047] It should be understood that the specific embodiments described herein are intended to explain the present application, but not to limit the present application.

[0048] Reference Figure 1 , Figure 1 is a structural schematic diagram of a fan yaw torque limiter detection device of a hardware running environment related to an embodiment scheme of the present application.

[0049] As Figure 1As shown in the figure, the fan yaw torque limiter detection device can include a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize the connection communication between the components. The user interface 1003 can include a display, an input unit such as a keyboard, and can also include a standard wired interface, a wireless interface. The network interface 1004 can optionally include a standard wired interface, a wireless interface (such as a wireless fidelity (Wi-Fi) interface). The memory 1005 can be a high-speed random access memory (RAM), and can also be a stable non-volatile memory (NVM), such as a disk memory. The memory 1005 can also be a storage device independent of the aforementioned processor 1001.

[0050] Those skilled in the art can understand that Figure 1 The structure shown in the figure does not constitute a limitation on the fan yaw torque limiter detection device, and can include more or fewer components than the figure, or combine certain components, or different component arrangements.

[0051] As Figure 1 As shown, the memory 1005 as a storage medium can include an operating system, a network communication module, a user interface module, and a fan yaw torque limiter detection program.

[0052] In Figure 1 As shown in the fan yaw torque limiter detection device, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the fan yaw torque limiter detection device of the application can be arranged in the fan yaw torque limiter detection device, and the fan yaw torque limiter detection device calls the fan yaw torque limiter detection program stored in the memory 1005 through the processor 1001, and executes the fan yaw torque limiter detection method provided by the embodiment of the application.

[0053] The embodiment of the application provides a fan yaw torque limiter detection method, which is described with reference to Figure 2 , Figure 2 The flowchart of the first embodiment of the fan yaw torque limiter detection method of the application is shown.

[0054] The fan yaw torque limiter detection method is used for real-time detection of the operating state of the friction type torque limiter of the fan yaw system.

[0055] Step S10: Obtain the output power of the yaw motor and the output speed of the friction type torque limiter.

[0056] It should be noted that the execution subject of the method of the embodiment can be a terminal device with data interaction, data processing and program running functions, such as a computer, a server, etc., or an electronic device with the same or similar functions, such as the above-mentioned fan yaw torque limiter detection device. The fan yaw torque limiter detection device (hereinafter referred to as the detection device) will be used as an example to describe the embodiment and the following embodiments.

[0057] The detection principle of the fan yaw torque limiter detection method of the embodiment is shown in Figure 3 , and Figure 3 is a detection principle diagram of the fan yaw torque limiter detection method of the present application.

[0058] It can be understood that wind energy, as an important new energy, has been vigorously developed in recent years and has great prospects and application value. In order to realize efficient utilization of wind energy, it is necessary to accurately point to the wind by using a fan yaw system. The fan yaw system mainly includes a yaw motor, a torque limiter, a gear reduction box, a yaw gear, a worm gear primary reduction, and a brake component. Among them, the yaw motor refers to a component or device for controlling the direction of a wind turbine generator, and the yaw fan drives the yaw rudder or adjusts the direction of the fan by receiving a control signal, thereby realizing accurate control of the direction of the fan and rapid response; the torque limiter is an important transmission component in the yaw system, used to connect the output end of the yaw motor and the input end of the gear reduction box. For the fan yaw system, the yaw motor first passes through a primary worm gear reduction, then connects with the gear reduction box through the friction type torque limiter, drives the yaw gear to rotate, and finally drives the fan head to rotate, realizing the function of pointing to the wind. When pointing to the wind, when the wind load is within the allowable bearing range of the yaw system, the torque limiter plays a role in transmitting torque, which can ensure the normal transmission of the yaw system; when the wind is too large and exceeds the bearing load of the yaw system, the torque limiter can automatically disconnect the yaw motor from the input shaft of the gear reduction box, playing an overload protection function, avoiding the phenomenon that the yaw system components are damaged due to excessive wind load, and improving the stability and service life of the yaw system.

[0059] It should be understood that the output power of the yaw motor can be obtained by a power analyzer, or the output voltage U and the output current I of the yaw motor can be calculated to obtain the motor output power, and the present embodiment does not limit this.

[0060] In an implementation manner, the embodiment obtains the output power of the yaw motor by calculating the output voltage U and the output current I of the yaw motor. Specifically, the step of obtaining the output power of the yaw motor and the output rotating speed of the friction type torque limiter comprises:

[0061] obtaining the voltage and the current of the yaw motor in real time based on the current-voltage detector;

[0062] calculating the output power of the yaw motor according to the voltage and the current of the yaw motor;

[0063] obtaining the output rotating speed of the friction type torque limiter based on the speed sensor.

[0064] It should be understood that the yaw motor can be started when the yaw system needs to be wind-aimed. Since the yaw motor outputs a large power when started, in order to prevent the error caused by the starting voltage, the detected voltage and current at this time are not used as the detection basis of the detection method of the wind turbine yaw torque limiter. When the yaw motor runs stably, the detection device can obtain the output voltage and the output current of the yaw motor in real time through the current-voltage detector and perform real-time calculation, so as to obtain the corresponding real-time power output value P of the yaw motor, that is, the output power of the yaw motor.

[0065] The calculation formula of the output power of the yaw motor is:

[0066]

[0067] Wherein, U is the output voltage of the yaw motor, I is the output current of the yaw motor, and cosα is the power factor of the yaw motor.

[0068] It should be noted that the power factor of the yaw motor described above is a functional parameter of the yaw motor, which can be directly provided by the manufacturer of the yaw motor, and the embodiment does not limit this.

[0069] It should be noted that in the embodiment, the torque limiter is a friction type torque limiter, and the output rotating speed of the friction type torque limiter can be obtained through the speed sensor. The embodiment can detect the output rotating speed of the friction type torque limiter in real time by adding a speed sensor at the output end of the friction type torque limiter.

[0070] In a specific implementation, the detection device obtains the output power of the yaw motor and the output rotating speed of the friction type torque limiter.

[0071] Step S20: When the output rotating speed of the friction type torque limiter is zero, the friction type torque limiter is in an overload protection state.

[0072] It should be noted that when the yaw system is normal to the wind, the detected friction torque limiter output speed is consistent with the friction torque limiter input speed; when the friction torque limiter is overloaded, the speed n becomes 0, and the rotation is stopped.

[0073] It should be noted that when the fan yaw system is subjected to rated load during the wind alignment process, the friction coupling pair in the friction torque limiter slips, and the friction torque limiter is disconnected from the yaw motor and the gear reducer, thereby stopping the yaw system from aligning the wind, effectively protecting the yaw system, that is, the friction torque limiter is in an overload protection state.

[0074] It should be understood that the friction coupling pair refers to a mechanical connecting component that exists due to friction to achieve torque or torque transmission.

[0075] It should be noted that under the rated load, the power output by the yaw motor when driving the yaw system to align the wind is the first maximum output power P max1 , and the torque limiter is overloaded. At this time, due to the slip of the friction coupling pair, the friction force changes from static friction to sliding friction, and the friction torque changes accordingly. The corresponding yaw motor output power will decrease slightly, and the corresponding output power is the second maximum output power P max2 . As the slip protection time of the friction torque limiter increases, the friction coupling plate will wear out, and the transmission torque will also decrease. However, when the transmission torque decreases to a certain value, the corresponding yaw motor is the minimum output power P min , and it is considered that the friction torque limiter is ineffective and cannot effectively protect the overload. The friction torque limiter needs to be maintained or replaced in time.

[0076] It should be understood that the relationship between the above three power values is: P min < P max2 < P max1 . For a specific fan yaw system, P max1 and P max2 are constant, and P min can be set according to the requirements of the yaw system, for example, it can be set to P min = 90% P max1 , so that the overload protection of the yaw system is maintained within a certain allowable range. By determining the relationship between P min , P max2 , P max1 , the speed n and the real-time power P of the yaw motor, the real-time online detection and feedback function of the friction torque limiter can be realized.

[0077] In a specific implementation, the detection device determines that the friction type torque limiter is in an overload protection state when the output rotating speed of the friction type torque limiter is zero.

[0078] Step S30: determining whether the output power is within a preset power threshold range.

[0079] It should be understood that, when the friction type torque limiter is in the overload protection state, the output power of the yaw motor should be between the minimum output power P min and the second maximum output power P max2 , that is, the preset power threshold range is between the minimum output power P min and the second maximum output power P max2 .

[0080] In a specific implementation, the detection device determines whether the output power of the yaw motor is within the preset power threshold range.

[0081] Step S40: if not, the friction type torque limiter is failed, and a friction type torque limiter failure warning is issued.

[0082] It should be noted that, if the output power is not within the preset power threshold range, it can be determined that the friction type torque limiter is in a failure state, at this time, the information of the state failure can be fed back to the upper computer real-time display system for display, and a friction type torque limiter failure warning is issued. That is, the step of if not, the friction type torque limiter is failed, and a friction type torque limiter failure warning is issued, includes: if not, indicating that the friction type torque limiter is failed; feeding back the information of the state failure to the upper computer real-time display system for real-time display; issuing a friction type torque limiter failure warning to prompt the technician to timely repair or replace the friction type torque limiter.

[0083] It should be noted that, the above-mentioned upper computer can be a remote device of a user, or a device for monitoring and displaying the working state of the fan yaw system, and the present embodiment does not limit this. In an implementation manner, the fan yaw torque limiter detection device can be used as the upper computer to display the working state of the fan yaw system, at this time, the information of the state failure does not need to be fed back to the upper computer real-time display system, and the display of the working state of the fan yaw system can be realized through the display device arranged on the detection device.

[0084] It should be understood that, when the friction type torque limiter is failed, a friction type torque limiter failure warning can be issued to remind the technician to timely repair or replace the friction type torque limiter, so as to avoid affecting the working of the fan yaw system.

[0085] The embodiment obtains the output power of the yaw motor and the output speed of the friction type torque limiter; when the output speed of the friction type torque limiter is zero, the friction type torque limiter is in an overload protection state; it is judged whether the output power is in a preset power threshold range; if not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is sent. Since the working state of the friction type torque limiter is judged by the output speed of the friction type torque limiter, and whether the friction type torque limiter is invalid is judged according to the output power of the yaw motor, the running state of the friction type torque limiter in the yaw system of the wind turbine is timely detected online, the operation and maintenance cost is reduced, and the stability of the yaw system of the wind turbine is improved.

[0086] Reference Figure 4 , Figure 4 It is a flowchart of the second embodiment of the wind turbine yaw torque limiter detection method.

[0087] Based on the above first embodiment, in the embodiment, after the step of obtaining the output power of the yaw motor and the output speed of the friction type torque limiter, the method further comprises:

[0088] Step S11: When the output speed of the friction type torque limiter is not zero, the friction type torque limiter does not perform overload protection.

[0089] Step S12: It is judged whether the output power is not greater than the first maximum output power.

[0090] Step S13: If not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is sent to prompt the technical personnel to timely repair or replace the friction type torque limiter.

[0091] It should be noted that when the output speed of the friction type torque limiter is not zero, it means that the friction type torque limiter does not perform overload protection at this time. At this time, it can be judged whether the output power P of the yaw motor is not greater than the first maximum output power P max1 If yes, it indicates that the friction type torque limiter is in a normal overload protection state, and the normal state information is fed back to the real-time display system for display. That is, after the step of judging whether the output power is not greater than the first maximum output power, the method further comprises: if yes, it indicates that the friction type torque limiter is in a normal transmission state; the normal state information is fed back to the real-time display system for real-time display.

[0092] It needs to be explained that when the friction type torque limiter fails to carry out timely and effective overload protection when the wind load exceeds the rated load, the friction type torque limiter is invalid, at this time, the state invalidation information is fed back to the real-time display system, and the corresponding early warning instruction is sent, so as to prompt the technical personnel to maintain or replace the friction type torque limiter in time.

[0093] It should be understood that the running state of the friction type torque limiter is judged by judging the output speed of the friction type torque limiter, and the running state of the friction type torque is judged by judging the output power of the yaw motor, so as to realize the online real-time detection and feedback of the running state of the friction type torque limiter.

[0094] It can be understood that the running state of the friction type torque limiter can include normal state and invalid state. When the friction type torque limiter is in normal working state, the detection device can send a signal of normal state to the real-time display system; when the friction type torque limiter is in invalid state, the detection device can send state invalidation information to the real-time display system, and give an early warning to prompt the technical personnel to maintain or replace the torque limiter in time. The above detection and judgment process is repeated, and the running state of the friction type torque limiter is fed back in real time, so as to accurately determine whether the friction type torque limiter is in safe service state, and to give real-time early warning to the invalid friction type torque limiter, thereby improving the stability of the fan yaw system, and effectively avoiding the loss caused by the invalidation of the torque limiter of the yaw system.

[0095] Further, after the step of judging whether the output power is within the preset power threshold range, it includes: if yes, it indicates that the friction type torque limiter is in normal overload protection state; and the normal information is fed back to the real-time display system for display.

[0096] Reference Figure 5 , Figure 5 The detection flow chart of the fan yaw torque limiter detection method of the application.

[0097] When the fan yaw system starts, the detection device can acquire the yaw motor voltage and current, and calculate the output power P of the yaw motor according to the yaw motor voltage and current;

[0098] Further, the detection device can acquire the output speed n of the friction type torque limiter; and judge whether n is 0.

[0099] If yes, it indicates that the friction type torque limiter is carrying out overload protection, at this time, it can be judged whether the output power P of the yaw motor is within the preset power range, that is, whether P min ≤P≤P max2If the condition is met, it indicates that the friction torque limiter is operating normally; if the condition is not met, it indicates that the friction torque limiter has failed, and an early warning can be issued.

[0100] If not, it indicates that the friction torque limiter is not providing overload protection. In this case, it can be determined whether the output power P of the yaw motor is less than the first maximum power. If yes, it indicates that the friction torque limiter is operating normally; if no, it indicates that the friction torque limiter has failed, and a warning can be issued.

[0101] It should be noted that the wind turbine yaw torque limiter detection method of the present invention repeatedly judges the friction torque and displays the operating status of the friction torque limiter through a real-time display system, thereby accurately reflecting whether the friction torque limiter is in a safe service state.

[0102] In this embodiment, when the output speed of the friction torque limiter is not zero, the friction torque limiter does not perform overload protection; it checks whether the output power is not greater than the first maximum output power; if not, the friction torque limiter fails, and a friction torque limiter failure warning is issued to prompt technicians to repair or replace the friction torque limiter in a timely manner; when the output speed of the friction torque limiter is zero, the friction torque limiter is in overload protection mode; it checks whether the output power is within the preset power threshold range; if not, the friction torque limiter fails, and a friction torque limiter failure warning is issued. Because the judgment is made on the friction torque limiter under different output speeds, the operating status of the friction torque limiter can be detected in a timely manner, and the failure point of the friction torque limiter can be accurately determined, thereby improving the timeliness of maintenance and replacement and ensuring the operational stability of the wind turbine yaw system.

[0103] Furthermore, this embodiment of the invention also proposes a storage medium storing a wind turbine yaw torque limiter detection program, which, when executed by a processor, implements the steps of the wind turbine yaw torque limiter detection method described above.

[0104] Based on the first embodiment of the wind turbine yaw torque limiter detection method of the present invention, a first embodiment of the wind turbine yaw torque limiter detection device of the present invention is proposed, with reference to... Figure 6 , Figure 6 This is a structural block diagram of the first embodiment of the wind turbine yaw torque limiter detection device of the present invention.

[0105] like Figure 6 As shown, the wind turbine yaw torque limiter detection device proposed in this embodiment of the invention includes:

[0106] Data acquisition module 601 is used to acquire the output power of the yaw motor and the output speed of the friction torque limiter;

[0107] The state judging module 602 is configured to determine that the friction torque limiter is in an overload protection state when the output rotating speed of the friction torque limiter is zero.

[0108] The data judging module 603 is configured to determine whether the output power is within a preset power threshold range.

[0109] The feedback alarm module 604 is configured to, if not, determine that the friction torque limiter is invalid, and issue a friction torque limiter invalidity early warning.

[0110] The embodiment obtains the output power of the yaw motor and the output rotating speed of the friction torque limiter, determines that the friction torque limiter is in an overload protection state when the output rotating speed of the friction torque limiter is zero, determines whether the output power is within a preset power threshold range, and if not, determines that the friction torque limiter is invalid and issues a friction torque limiter invalidity early warning. The working state of the friction torque limiter is determined by the output rotating speed of the friction torque limiter, and whether the friction torque limiter is invalid is determined according to the output power of the yaw motor, so that the running state of the friction torque limiter in the wind turbine yaw system is detected in time and online, and it is not necessary to rely on technical personnel to determine the running state of the wind turbine yaw system, thereby reducing the operation and maintenance cost and improving the stability of the wind turbine yaw system.

[0111] Further, the state judging module 602 is further configured to determine that the friction torque limiter has not been subjected to overload protection when the output rotating speed of the friction torque limiter is not zero.

[0112] The data judging module 603 is further configured to determine whether the output power is not greater than a first maximum output power.

[0113] Further, the device further comprises a display module, the display module is further configured to, if yes, indicate that the friction torque limiter is in a normal transmission state, and feed back information of the normal state to a real-time display system for real-time display.

[0114] Further, the data acquisition module 601 is further configured to acquire the voltage and the current of the yaw motor in real time based on a current-voltage detector, calculate the output power of the yaw motor according to the voltage and the current of the yaw motor, and acquire the output rotating speed of the friction torque limiter based on a speed sensor.

[0115] Further, the feedback alarm module 604 is further configured to, if not, indicate that the friction torque limiter is invalid, feed back information of the invalid state to a real-time display system for real-time display, and issue a friction torque limiter invalidity early warning to prompt technical personnel to timely maintain or replace the friction torque limiter.

[0116] Further, the display module is further used for if yes, indicating that the friction type torque limiter is in a normal overload protection state; and feeding back normal information to a real-time display system for display.

[0117] Other embodiments or specific implementations of the fan yaw torque limiter detection device of the present application can refer to the above-mentioned method embodiments, which will not be described here.

[0118] It should be noted that in this document, the terms "comprising", "containing" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or system. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of another identical element in the process, method, article or system including the element.

[0119] The above-mentioned embodiment numbers of the present application are only for description, not representing the advantages or disadvantages of the embodiments.

[0120] Through the above description of the embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be realized by means of software and necessary general hardware platform, of course, also can be realized by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present application or the part that contributes to the prior art can be embodied in the form of software product, which is stored in a storage medium (such as read-only memory / random access memory, magnetic disk, optical disk), including a plurality of instructions for making a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) execute the method described in each embodiment of the present application.

[0121] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent flow transformation made by using the content of the specification and drawings, or directly or indirectly applied to other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method of detecting a yaw torque limiter of a fan, the method comprising: determining a yaw torque limiter of a fan is operating in a fault condition; and providing an indication of the fault condition. The method is used for real-time detection of the running state of a friction type torque limiter of a fan yaw system; the method comprises: Real-time acquisition of the voltage and current of the yaw motor based on a current voltage detector; Calculation of the output power of the yaw motor according to the voltage and current of the yaw motor; Acquisition of the output rotating speed of the friction type torque limiter based on a speed sensor; When the output rotating speed of the friction type torque limiter is not zero, the friction type torque limiter has not been protected against overload; Judgment of whether the output power is not greater than a first maximum output power; If not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is issued to prompt the technical personnel to timely maintain or replace the friction type torque limiter; When the output rotating speed of the friction type torque limiter is zero, the friction type torque limiter is in an overload protection state; Judgment of whether the output power is within a preset power threshold range; If not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is issued. The calculation formula of the output power of the yaw motor is: Wherein, U is the output voltage of the yaw motor, I is the output current of the yaw motor, and cosα is the power factor of the yaw motor.

2. The fan yaw torque limiter detection method of claim 1, wherein, After the step of judging whether the output power is not greater than the first maximum output power, the method further comprises: If yes, it indicates that the friction type torque limiter is in a normal transmission state; Information of the normal state is fed back to a real-time display system for real-time display.

3. The fan yaw torque limiter detection method of claim 1, wherein, The step of if not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is issued, comprises: If not, it indicates that the friction type torque limiter is invalid; Information of the invalid state is fed back to a real-time display system for real-time display; A friction type torque limiter invalidity early warning is issued to prompt the technical personnel to timely maintain or replace the friction type torque limiter.

4. The fan yaw torque limiter detection method of claim 1, wherein, After the step of judging whether the output power is within a preset power threshold range, the method further comprises: If yes, it indicates that the friction type torque limiter is in a normal overload protection state; Information of the normal state is fed back to a real-time display system for display.

5. A fan yaw torque limiter detection device, characterized by, The fan yaw torque limiter detection device is used for implementing the fan yaw torque limiter detection method according to any one of claims 1-4, and the device comprises: A data acquisition module, which is used for real-time acquisition of the voltage and current of the yaw motor based on a current voltage detector; calculation of the output power of the yaw motor according to the voltage and current of the yaw motor; and acquisition of the output rotating speed of the friction type torque limiter based on a speed sensor; A state judgment module, which is used for judgment of whether the output power is not greater than a first maximum output power when the output rotating speed of the friction type torque limiter is not zero; if not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is issued to prompt the technical personnel to timely maintain or replace the friction type torque limiter; The state judgment module is further used for judgment of whether the output power is within a preset power threshold range when the output rotating speed of the friction type torque limiter is zero; if not, the friction type torque limiter is invalid, and a friction type torque limiter invalidity early warning is issued. A data judging module is configured to judge whether the output power is within a preset power threshold range. A feedback alarm module is configured to, if not, issue a failure warning of the friction type torque limiter. The output power of the yaw motor is calculated by the following formula: Wherein, U is the output voltage of the yaw motor, I is the output current of the yaw motor, and cosα is the power factor of the yaw motor.

6. A wind turbine yaw torque limiter detection device, characterized in that The device comprises a memory, a processor, and a fan yaw torque limiter detection program stored in the memory and executable on the processor, and the fan yaw torque limiter detection program is configured to implement the steps of the fan yaw torque limiter detection method according to any one of claims 1 to 4.

7. A storage medium, characterized by The storage medium stores a fan yaw torque limiter detection program, and the fan yaw torque limiter detection program implements the steps of the fan yaw torque limiter detection method according to any one of claims 1 to 4 when executed by the processor.

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