A wind turbine generator system transmission chain resistance adding abnormal protection method and system

Abstract

The application discloses a wind turbine transmission chain resistance adding abnormal protection method and system, comprising the following steps: 1) obtaining the generator speed, and filtering to obtain the resistance adding torque value; 2) performing mobile sliding window filtering processing on the resistance adding torque value to obtain a resistance adding torque filtering value; 3) performing logical operation on the resistance adding torque filtering value to obtain a logical operation value; 4) comparing the logical operation value with a preset threshold value; if the logical operation value is greater than the preset threshold value, starting the transmission chain resistance adding abnormal protection mode. The application has the advantages of effectively and actively protecting the unit transmission chain in time, improving the operation performance of the unit transmission chain, and being high in universality.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the field of wind power technology, and particularly relates to a wind turbine generator system transmission chain resistance abnormality protection method and system. BACKGROUND

[0002] With the rapid development of long blades, high towers and large capacity units, the variable speed variable pitch type wind turbine generator is prone to excite the transmission chain mode under the power generation working condition (especially in the constant speed operation interval). At present, an additional resistance torque component is usually superimposed to increase the equivalent damping of the transmission chain, thereby inhibiting the fluctuation of the transmission chain torque.

[0003] The classic transmission chain resistance structure is to extract the torsional vibration speed component reflecting the transmission chain mode from the measured generator speed, and process the speed component to construct an additional resistance torque component (wherein the phase of the additional resistance torque component is consistent with the phase of the torsional vibration speed component, and the amplitude of the additional resistance torque component is proportional to the amplitude of the torsional vibration speed component). The additional resistance torque component constructed and the output torque of the torque PI controller are superimposed to increase the equivalent damping of the transmission chain of the unit, and the specific control structure is shown in . Figure 1 . Figure 1 , wherein T a is the aerodynamic torque, is the generator speed instruction (the generator speed instruction is set to the grid-connected speed in the low wind speed area, and the generator speed instruction is set to the rated speed in the high wind speed area), ω gen is the measured generator speed, is the output torque of the torque PI controller, is the additional resistance torque component.

[0004] The existing invention patent applications mainly focus on the improvement of the transmission chain resistance method and how to improve the steady-state performance of the transmission chain. The invention patents with the application publication numbers CN104483846A and CN106194581A both obtain the additional resistance torque through a series of filtering processing on the generator speed and then through calculation. However, the transmission chain resistance abnormality is not identified and effective protection measures are not taken. In addition, the existing classic transmission chain resistance structure is based on the consistent phase and proportional amplitude of the additional resistance torque component and the torsional vibration speed. When the phase deviates or the amplitude changes greatly to cause the transmission chain resistance abnormality, the phenomenon cannot be identified in time, so that real-time protection cannot be performed. SUMMARY

[0005] The technical problem to be solved by the present application is that in view of the technical problems existing in the prior art, the present application provides a wind turbine generator system transmission chain resistance abnormality protection method and system which can effectively and actively protect the transmission chain of the unit in time and improve the operation performance of the transmission chain of the unit.

[0006] To solve the above technical problems, the technical scheme provided by the present application is:

[0007] A wind turbine transmission chain resistance adding abnormal protection method, comprising

[0008] 1) Obtain the generator speed, and filter to obtain the resistance adding torque value;

[0009] 2) Perform moving sliding window filtering processing on the resistance adding torque value to obtain a resistance adding torque filtered value;

[0010] 3) Perform logical operation on the resistance adding torque filtered value to obtain a logical operation value;

[0011] 4) Compare the logical operation value with a preset threshold value; if the logical operation value is greater than the preset threshold value, start the transmission chain resistance adding abnormal protection mode.

[0012] As a further improvement of the above technical scheme:

[0013] In step 2), the resistance adding torque value is subjected to long-time T1 moving sliding window filtering processing and short-time T2 moving sliding window filtering processing to obtain the resistance adding torque filtered value.

[0014] In step 3), the logical operation is taking absolute value or squaring, and the corresponding logical operation value is the absolute value of the resistance adding torque filtered value or the squared value of the resistance adding torque filtered value.

[0015] Perform long-time T1 moving sliding window filtering processing on the resistance adding torque value, and perform logical operation of taking absolute value on the obtained resistance adding torque filtered value to obtain a first resistance adding torque filtered value;

[0016] Perform short-time T2 moving sliding window filtering processing on the resistance adding torque value, and perform logical operation of taking absolute value on the obtained resistance adding torque filtered value to obtain a second resistance adding torque filtered value;

[0017] The preset threshold value includes a first threshold value, a second threshold value and a third threshold value, and the first threshold value < the second threshold value < the third threshold value;

[0018] If the first resistance adding torque filtered value is less than the first threshold value, the transmission chain resistance adding abnormal protection is not triggered;

[0019] If the first resistance adding torque filtered value is greater than the first threshold value and less than the second threshold value, the transmission chain resistance adding abnormal protection is triggered, and a first transmission chain resistance adding abnormal protection mode is entered;

[0020] If the first resistance adding torque filtered value is greater than the second threshold value, the transmission chain resistance adding abnormal protection is triggered, and a second transmission chain resistance adding abnormal protection mode is entered.

[0021] When threshold value judgment is performed on the first added resistance torque filter value, the second added resistance torque filter value is monitored in real time; if the second added resistance torque filter value is greater than a third threshold value, the transmission chain added resistance abnormal protection is triggered, and a second transmission chain added resistance abnormal protection mode is entered.

[0022] The added resistance torque value is subjected to long-time T1 moving sliding window filter processing, and the obtained added resistance torque filter value is subjected to quadratic logic operation, thereby obtaining a third added resistance torque filter value.

[0023] The added resistance torque value is subjected to short-time T2 moving sliding window filter processing, and the obtained added resistance torque filter value is subjected to quadratic logic operation, thereby obtaining a fourth added resistance torque filter value.

[0024] The preset threshold values include a fourth threshold value, a fifth threshold value and a sixth threshold value; wherein the fourth threshold value < the fifth threshold value < the sixth threshold value.

[0025] If the third added resistance torque filter value is less than the fourth threshold value, the transmission chain added resistance abnormal protection is not triggered.

[0026] If the third added resistance torque filter value is greater than the fourth threshold value and less than the fifth threshold value, the transmission chain added resistance abnormal protection is triggered, and a first transmission chain added resistance abnormal protection mode is entered.

[0027] If the third added resistance torque filter value is greater than the fifth threshold value, the transmission chain added resistance abnormal protection is triggered, and a second transmission chain added resistance abnormal protection mode is entered.

[0028] When threshold value judgment is performed on the third added resistance torque filter value, the fourth added resistance torque filter value is monitored in real time; if the fourth added resistance torque filter value is greater than the sixth threshold value, the transmission chain added resistance abnormal protection is triggered, and the second transmission chain added resistance abnormal protection mode is entered.

[0029] If the first transmission chain added resistance abnormal protection mode is triggered, the unit immediately performs a limited power action; if the second transmission chain added resistance abnormal protection mode is triggered, the unit immediately performs a shutdown action.

[0030] In step 1), the added resistance torque value is obtained through a low-pass filter or a band-pass filter or a band-stop filter.

[0031] The application further discloses a wind turbine transmission chain added resistance abnormal protection system, which comprises

[0032] The first module is used for obtaining a generator speed and filtering to obtain an added resistance torque value.

[0033] The second module is used for performing moving sliding window filter processing on the added resistance torque value, thereby obtaining an added resistance torque filter value.

[0034] The third module is used for performing logic operation on the added resistance torque filter value, thereby obtaining a logic operation value.

[0035] A fourth module is configured to compare the logic operation value with a preset threshold value; if the logic operation value is greater than the preset threshold value, a drive chain resistance increase abnormal protection mode is started.

[0036] The application further discloses a computer readable storage medium, which stores a computer program, and the computer program performs the steps of the wind turbine drive chain resistance increase abnormal protection method when being run by a processor.

[0037] The application further discloses a computer device, which comprises a memory and a processor, and the memory stores a computer program, and the computer program performs the steps of the wind turbine drive chain resistance increase abnormal protection method when being run by the processor.

[0038] Compared with the prior art, the application has the following advantages:

[0039] The application can actively and effectively identify the drive chain resistance increase abnormality in real time by performing the moving sliding window filtering processing on the resistance increase torque value to obtain a resistance increase torque filtering value, performing the corresponding logic operation, and comparing the resistance increase torque filtering value with the preset threshold value, thereby effectively protecting the drive chain of the wind turbine in time and improving the operation performance of the drive chain of the wind turbine.

[0040] The application can identify the drive chain resistance increase abnormality in time and accurately by performing the multi-mode logic operation processing and the multi-mode threshold value judgment on the drive chain resistance increase value, and improve the operation performance of the wind turbine. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 It is a drive chain resistance increase structure block diagram of the prior art.

[0042] Figure 2 It is a torque control system block diagram of the application.

[0043] Figure 3 It is a flowchart of the method of the application in the embodiment.

[0044] Figure 4 It is a flowchart of the abnormal protection method of the application in the embodiment. DETAILED DESCRIPTION

[0045] The application will be further described below in combination with the accompanying drawings and specific embodiments.

[0046] As shown in the drawings, Figure 3 the wind turbine drive chain resistance increase abnormal protection method of the embodiment comprises

[0047] 1) obtain the generator speed, filter to obtain the added resistance torque value;

[0048] 2) the added resistance torque value is subjected to moving sliding window filtering processing to obtain an added resistance torque filtering value;

[0049] 3) the added resistance torque filtering value is subjected to logical operation to obtain a logical operation value;

[0050] 4) the logical operation value is compared with a preset threshold value; if the logical operation value is greater than the preset threshold value, the transmission chain added resistance abnormal protection mode is started.

[0051] The added resistance torque value is subjected to moving sliding window filtering processing to obtain an added resistance torque filtering value, then subjected to corresponding logical operation and compared with a preset threshold value, so that the transmission chain added resistance abnormality can be actively and effectively identified in real time, the transmission chain of the unit is effectively protected in time, and the operation performance of the transmission chain of the unit is improved; the overall method is simple to apply and has strong universality. In a preferred embodiment, in step 1), the added resistance torque value is filtered by a low-pass filter or a band-pass filter or a band-stop filter; in step 2), the added resistance torque value is subjected to long-time moving sliding window filtering processing and short-time moving sliding window filtering processing to obtain an added resistance torque filtering value; in step 3), the logical operation is taking an absolute value or squaring, and the corresponding logical operation value is the absolute value of the added resistance torque filtering value or the square value of the added resistance torque filtering value.

[0052] Specifically, the added resistance torque value is subjected to long-time moving sliding window filtering processing, the obtained added resistance torque filtering value is subjected to logical operation of taking an absolute value to obtain a first added resistance torque filtering value;

[0053] The added resistance torque value is subjected to short-time moving sliding window filtering processing, the obtained added resistance torque filtering value is subjected to logical operation of taking an absolute value to obtain a second added resistance torque filtering value;

[0054] The preset threshold value includes a first threshold value, a second threshold value and a third threshold value, the first threshold value < the second threshold value < the third threshold value;

[0055] If the first added resistance torque filtering value is less than the first threshold value, the transmission chain added resistance abnormal protection is not triggered;

[0056] If the first added resistance torque filtering value is greater than the first threshold value and less than the second threshold value, the transmission chain added resistance abnormal protection is triggered, and a first transmission chain added resistance abnormal protection mode is entered;

[0057] If the first added resistance torque filtering value is greater than the second threshold value, the transmission chain added resistance abnormal protection is triggered, and a second transmission chain added resistance abnormal protection mode is entered.

[0058] Meanwhile, the second resistance torque filtering value is monitored in real time when the threshold value of the first resistance torque filtering value is judged; if the second resistance torque filtering value is greater than the third threshold value, the transmission chain resistance abnormal protection is triggered, and the second transmission chain resistance abnormal protection mode is entered.

[0059] In another preferred embodiment, the resistance torque value is subjected to long-time moving sliding window filtering processing, and the obtained resistance torque filtering value is subjected to quadratic logic operation, so as to obtain a third resistance torque filtering value.

[0060] The resistance torque value is subjected to short-time moving sliding window filtering processing, and the obtained resistance torque filtering value is subjected to quadratic logic operation, so as to obtain a fourth resistance torque filtering value.

[0061] The preset threshold value includes a fourth threshold value, a fifth threshold value and a sixth threshold value; wherein the fourth threshold value < the fifth threshold value < the sixth threshold value.

[0062] If the third resistance torque filtering value is less than the fourth threshold value, the transmission chain resistance abnormal protection is not triggered.

[0063] If the third resistance torque filtering value is greater than the fourth threshold value and less than the fifth threshold value, the transmission chain resistance abnormal protection is triggered, and the first transmission chain resistance abnormal protection mode is entered.

[0064] If the third resistance torque filtering value is greater than the fifth threshold value, the transmission chain resistance abnormal protection is triggered, and the second transmission chain resistance abnormal protection mode is entered.

[0065] Meanwhile, the fourth resistance torque filtering value is monitored in real time when the threshold value of the third resistance torque filtering value is judged; if the fourth resistance torque filtering value is greater than the sixth threshold value, the transmission chain resistance abnormal protection is triggered, and the second transmission chain resistance abnormal protection mode is entered.

[0066] The transmission chain resistance value is subjected to multi-mode logic operation processing and multi-mode threshold value judgment, so that the transmission chain resistance abnormal phenomenon can be accurately identified in time, and the operation performance of the unit is improved; for different degrees of transmission chain resistance abnormal phenomenon, a multi-mode protection mechanism is adopted, and the pertinence is strong.

[0067] As shown in Figure 2 The torque control system of the variable speed variable pitch type wind turbine mainly includes a generator speed difference value calculation module, a speed PI control module, a transmission chain resistance construction module, a transmission chain resistance calculation processing module, a transmission chain resistance abnormal judgment module and a transmission chain resistance abnormal protection module. The generator speed difference value calculation module, the speed PI control module, the transmission chain resistance construction module and the transmission chain resistance calculation processing module are based on Figure 1The classical transmission chain resistance adding technology is shown, and the resistance adding torque component is constructed; the transmission chain resistance adding abnormality judging module and the transmission chain resistance adding abnormality protection module calculate and process the constructed transmission chain resistance adding value, and then judge according to the calculation processing result; if the transmission chain resistance adding abnormality protection trigger condition is not satisfied, the unit keeps normal operation mode; if the transmission chain resistance adding abnormality protection trigger condition is satisfied, the unit immediately enters the transmission chain resistance adding abnormality protection mode.

[0068] The application further discloses a wind turbine generator unit transmission chain resistance adding abnormality protection system.

[0069] The first module is used for acquiring the generator rotating speed and filtering to obtain a resistance adding torque value.

[0070] The second module is used for moving sliding window filtering processing on the resistance adding torque value to obtain a resistance adding torque filtering value.

[0071] The third module is used for logical operation on the resistance adding torque filtering value to obtain a logical operation value.

[0072] The fourth module is used for comparing the logical operation value with a preset threshold value; if the logical operation value is greater than the preset threshold value, the transmission chain resistance adding abnormality protection mode is started.

[0073] The wind turbine generator unit transmission chain resistance adding abnormality protection system is used for executing the method as described above, and also has the advantages of the method as described above.

[0074] The application further discloses a computer readable storage medium, which stores a computer program. The computer program performs the steps of the wind turbine transmission chain abnormal protection method when executed by a processor. The application also discloses a computer device, which comprises a memory and a processor. The memory stores a computer program. The computer program performs the steps of the wind turbine transmission chain abnormal protection method when executed by the processor. The application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by a computer program instructing related hardware. The computer program can be stored in a computer readable storage medium. The computer program can implement the steps of the above-mentioned method embodiment when executed by a processor. The computer program comprises computer program code, which can be in the form of source code, object code, an executable file or some intermediate form. The computer readable medium can comprise any entity or device capable of carrying the computer program code, a recording medium, a U disk, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal and a software distribution medium, etc. The memory can be used to store a computer program and / or a module. The processor realizes various functions by running or executing the computer program and / or the module stored in the memory and calling data stored in the memory. The memory can comprise a high-speed random access memory and can also comprise a non-volatile memory, for example, a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one magnetic disk storage device, a flash memory device or other volatile solid-state storage device, etc.

[0075] The application will be further described below with reference to the drawings.

[0076] According to Figure 3 As shown in the figure, the generator speed is filtered through a specific filter (including a low-pass filter, a band-pass filter, a band-stop filter, etc.) to obtain a resistance torque. The resistance torque value is subjected to long-time T1 moving sliding window filtering processing, and the absolute value is taken and set as a first resistance torque filtering value.

[0077] The resistance torque value is subjected to short-time T2 moving sliding window filtering processing, and the absolute value is taken and set as a second resistance torque filtering value.

[0078] If the first resistance torque filtering value is less than the first threshold value (i.e., the first threshold value) of the resistance torque, the transmission chain resistance abnormal protection is not triggered.

[0079] If the first resistance torque filtered value is greater than the first resistance torque threshold value and less than the second resistance torque threshold value (i.e. the second threshold value), the transmission chain resistance abnormal protection is triggered, and the first transmission chain resistance abnormal protection mode is entered.

[0080] If the first resistance torque filtered value is greater than the second resistance torque threshold value (i.e. the second threshold value), the transmission chain resistance abnormal protection is triggered, and the second transmission chain resistance abnormal protection mode is entered.

[0081] When the threshold value of the first resistance torque filtered value is judged, the second resistance torque filtered value is monitored in real time. If the second resistance torque filtered value is greater than the third resistance torque threshold value (i.e. the third threshold value), the transmission chain resistance abnormal protection is triggered, and the second transmission chain resistance abnormal protection mode is entered.

[0082] In addition, after the resistance torque value is filtered by a moving sliding window at a specific moment, the threshold value is judged by performing a quadratic processing. The quadratic value of the resistance torque value filtered by a moving sliding window at a long time T1 is set as the third resistance torque filtered value, and the quadratic value of the resistance torque value filtered by a moving sliding window at a short time T2 is set as the fourth resistance torque filtered value.

[0083] If the third resistance torque filtered value is less than the first quadratic resistance torque threshold value (i.e. the fourth threshold value), the transmission chain resistance abnormal protection is not triggered.

[0084] If the third resistance torque filtered value is greater than the first quadratic resistance torque threshold value (i.e. the fourth threshold value) and less than the second quadratic resistance torque threshold value (i.e. the fifth threshold value), the transmission chain resistance abnormal protection is triggered, and the first transmission chain resistance abnormal protection mode is entered.

[0085] If the third resistance torque filtered value is greater than the second quadratic resistance torque threshold value (i.e. the fifth threshold value), the transmission chain resistance abnormal protection is triggered, and the second transmission chain resistance abnormal protection mode is entered.

[0086] When the threshold value of the third resistance torque filtered value is judged, the fourth resistance torque filtered value is monitored in real time. If the fourth resistance torque filtered value is greater than the third quadratic resistance torque threshold value (i.e. the sixth threshold value), the transmission chain resistance abnormal protection is triggered, and the second transmission chain resistance abnormal protection mode is entered.

[0087] The transmission chain resistance abnormal protection mode includes the first transmission chain resistance abnormal protection mode and the second transmission chain resistance abnormal protection mode. If the first transmission chain resistance abnormal protection mode is triggered, the unit immediately performs a limited power action. If the second transmission chain resistance abnormal protection mode is triggered, the unit immediately performs a shutdown action.

[0088] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical scheme falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled in the art, some improvements and refinements without departing from the principles of the present application shall be considered as the protection scope of the present application.

Claims

1. A method for abnormal resistance protection of a wind turbine generator drive train, characterized in that, include 1) Obtain the generator speed and filter it to obtain the applied torque value; 2) Perform a sliding window filter on the applied torque value to obtain the filtered applied torque value; 3) Perform logical operations on the filtered value of the applied torque to obtain the logical operation value; 4) Compare the logical operation value with the preset threshold; if the logical operation value is greater than the preset threshold, then activate the transmission chain resistance abnormal protection mode. In step 2), the applied torque value is subjected to long-term... Moving sliding window filtering and short-time The drag torque filtered value is obtained by moving the sliding window filter. In step 3), the logical operation is to take the absolute value or the square, and the corresponding logical operation value is the absolute value of the applied torque filter value or the square value of the applied torque filter value. In step 1), the applied torque value is obtained by filtering with a low-pass filter, a band-pass filter, or a band-stop filter.

2. The method for abnormal resistance protection of wind turbine generator transmission chain according to claim 1, characterized in that, Long-term measurement of the applied torque value The sliding window filtering process is used to perform a logical operation on the absolute value of the obtained applied torque filter value to obtain the first applied torque filter value. Short-time adjustment of the applied torque value The sliding window filtering process is used to perform a logical operation on the absolute value of the obtained applied torque filter value to obtain a second applied torque filter value. The preset threshold includes a first threshold, a second threshold, and a third threshold, wherein the first threshold < the second threshold < the third threshold; If the first applied torque filter value is less than the first threshold, the transmission chain applied torque abnormality protection will not be triggered. If the first applied torque filter value is greater than the first threshold and less than the second threshold, the transmission chain applied torque abnormal protection is triggered, and the transmission chain applied torque abnormal protection mode is entered. If the first applied torque filter value is greater than the second threshold, the abnormal applied torque protection of the transmission chain is triggered, and the transmission chain enters the second abnormal applied torque protection mode.

3. The method for abnormal resistance protection of wind turbine generator transmission chain according to claim 2, characterized in that, When performing threshold judgment on the first applied torque filter value, the second applied torque filter value is monitored in real time. If the second applied torque filter value is greater than the third threshold, the transmission chain applied torque abnormality protection is triggered, and the transmission chain applied torque abnormality protection mode is entered.

4. The method for abnormal resistance protection of wind turbine generator transmission chain according to claim 1, characterized in that, Long-term measurement of the applied torque value The sliding window filtering process performs a quadratic logical operation on the obtained applied torque filter value to obtain a third applied torque filter value. Short-time adjustment of the applied torque value The sliding window filtering process is used to perform a quadratic logical operation on the obtained applied torque filter value to obtain a fourth applied torque filter value. The preset thresholds include a fourth threshold, a fifth threshold, and a sixth threshold; wherein the fourth threshold < the fifth threshold < the sixth threshold; If the third applied torque filter value is less than the fourth threshold, the abnormal protection of the drive train applied torque will not be triggered. If the third applied torque filter value is greater than the fourth threshold and less than the fifth threshold, the transmission chain applied torque abnormal protection is triggered, and the transmission chain applied torque abnormal protection mode is entered. If the third applied torque filter value is greater than the fifth threshold, the abnormal applied torque protection of the transmission chain is triggered, and the transmission chain enters the abnormal applied torque protection mode.

5. The method for abnormal resistance protection of wind turbine generator transmission chain according to claim 4, characterized in that, When performing threshold judgment on the third applied torque filter value, the fourth applied torque filter value is monitored in real time; if the fourth applied torque filter value is greater than the sixth threshold, the transmission chain applied torque abnormal protection is triggered, and the second transmission chain applied torque abnormal protection mode is entered.

6. The method for abnormal resistance protection of the wind turbine generator drive chain according to any one of claims 2 to 5, characterized in that, If the first drive train resistance abnormal protection mode is triggered, the unit will immediately perform a power limiting action; if the second drive train resistance abnormal protection mode is triggered, the unit will immediately perform a shutdown action.

7. A wind turbine generator drivetrain resistance abnormality protection system, used to perform the steps of the wind turbine generator drivetrain resistance abnormality protection method as described in any one of claims 1 to 6, characterized in that, include: The first module is used to obtain the generator speed and filter it to obtain the applied torque value. The second module is used to perform moving sliding window filtering on the applied torque value to obtain the applied torque filtered value. The third module is used to perform logical operations on the applied torque filter value to obtain the logical operation value; The fourth module is used to compare the logical operation value with a preset threshold; if the logical operation value is greater than the preset threshold, the abnormal protection mode of the transmission chain resistance is activated.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is run by the processor, it executes the steps of the wind turbine generator drive chain resistance abnormal protection method as described in any one of claims 1 to 6.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the computer program is run by the processor, it executes the steps of the wind turbine generator drive chain resistance abnormal protection method as described in any one of claims 1 to 6.

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