Control method of cooling fan of gearbox radiator and wind generating set

Abstract

The invention provides a control method for cooling fans of a gearbox radiator and a wind generating set, the cooling fans comprise two sets of cooling fans, and the control method comprises the steps that the temperature of gearbox lubricating oil is obtained; when the temperature is larger than or equal to a first threshold value and smaller than a second threshold value, one of the two sets of cooling fans is controlled to operate in a low-speed mode, and the other one of the two sets of cooling fans is controlled to stop operating; when the temperature is larger than or equal to a second threshold value and smaller than a third threshold value, the two sets of cooling fans are controlled to operate in a low-speed mode; when the temperature is larger than or equal to a third threshold value and smaller than a fourth threshold value, one of the two sets of cooling fans is controlled to operate in a high-speed mode, and the other one of the two sets of cooling fans is controlled to operate in a low-speed mode; when the temperature is larger than or equal to a fourth threshold value, the two sets of cooling fans are controlled to operate in a high-speed mode, and the first threshold value, the second threshold value and the third threshold value meet the following relation that the fourth threshold value is larger than the third threshold value, the second threshold value is larger than the first threshold value.

Description

Technical Field

[0001] The present disclosure generally relates to the field of wind power technology, and more specifically, to a control method for a cooling fan of a gearbox radiator and a wind turbine generator set. Background Art

[0002] In the related art of using wind turbine generator sets for power generation, there are various ways to dissipate heat from the gearbox of the wind turbine generator set. For example, air cooling, liquid cooling, etc. In the case of using air cooling to dissipate heat from the gearbox of the generator set, an air-oil radiator (also called an air-oil heat exchanger or an air-oil cooler) is usually used. Since the heat generated by the gearbox during operation needs to be transferred to the atmosphere through the air-oil radiator, the heat dissipation power of the air-oil radiator must meet the maximum heat generation power of the gearbox. Specifically, the air-oil radiator adopts an oil-air heat exchange form. The oil carrying heat enters the core of the air-oil radiator and exchanges heat with air through the forced air cooling of the cooling fan, and the heat is dissipated into the air.

[0003] However, the control method of the existing heat dissipation scheme for the gearbox of the wind turbine generator set is simple (for example, simple start-stop control for the cooling fan), which may cause waste of energy and cannot meet the energy-saving requirements. Summary of the Invention

[0004] An exemplary embodiment of the present disclosure is to provide a control method for a cooling fan of a gearbox radiator and a wind turbine generator set, which can efficiently realize the heat dissipation / cooling control of the gearbox by adopting different control strategies to control the high-speed / low-speed operation of multiple groups of cooling fans by considering the ambient temperature.

[0005] According to one aspect of an embodiment of the present disclosure, a control method for a cooling fan of a gearbox radiator is provided. The cooling fan includes a first cooling fan group and a second cooling fan group. The control method includes: obtaining the temperature of the gearbox lubricating oil; when the temperature of the gearbox lubricating oil is greater than or equal to a first threshold and less than a second threshold, controlling one of the first cooling fan group and the second cooling fan group to operate in a low-speed mode, and controlling the other of the first cooling fan group and the second cooling fan group to stop operating; when the temperature of the gearbox lubricating oil is greater than or equal to the second threshold and less than a third threshold, controlling both the first cooling fan group and the second cooling fan group to operate in a low-speed mode; when the temperature of the gearbox lubricating oil is greater than or equal to the third threshold and less than a fourth threshold, controlling one of the first cooling fan group and the second cooling fan group to operate in a high-speed mode, and controlling the other of the first cooling fan group and the second cooling fan group to operate in a low-speed mode; when the temperature of the gearbox lubricating oil is greater than or equal to the fourth threshold, controlling both the first cooling fan group and the second cooling fan group to operate in a high-speed mode, wherein the first threshold, the second threshold, the third threshold, and the fourth threshold satisfy the following relationship: the fourth threshold > the third threshold > the second threshold > the first threshold.

[0006] Optionally, the control method may be executed when the following condition is satisfied: the ambient temperature around the gearbox is greater than a predetermined threshold.

[0007] Optionally, the control method may further include: when the temperature of the gearbox lubricating oil is less than or equal to a fifth threshold and at least one of the first cooling fan group and the second cooling fan group is in an operating state, controlling both the first cooling fan group and the second cooling fan group to stop operating, wherein the fifth threshold is less than the first threshold.

[0008] Optionally, the control method may further include: when the temperature of the gearbox lubricating oil is less than or equal to a sixth threshold, controlling one of the first cooling fan group and the second cooling fan group to operate in a low-speed mode, and controlling the other of the first cooling fan group and the second cooling fan group to stop operating, wherein the sixth threshold is greater than the first threshold and less than the second threshold.

[0009] Optionally, the control method may further include: when the temperature of the gearbox lubricating oil is less than or equal to a seventh threshold, controlling both the first cooling fan group and the second cooling fan group to operate in a low-speed mode, wherein the seventh threshold is greater than the second threshold and less than the third threshold.

[0010] Optionally, the control method may further include: when the temperature of the lubricating oil of the gearbox is less than or equal to an eighth threshold, controlling one of the first cooling fan group and the second cooling fan group to operate in a high-speed mode, and controlling the other of the first cooling fan group and the second cooling fan group to operate in a low-speed mode, where the eighth threshold is greater than the third threshold and less than the fourth threshold.

[0011] Optionally, the control method may further include: in response to the ambient temperature around the gearbox being less than or equal to the predetermined threshold, performing the following steps: when the temperature of the lubricating oil of the gearbox is greater than or equal to a ninth threshold and less than a tenth threshold, controlling both the first cooling fan group and the second cooling fan group to operate in a low-speed mode; when the temperature of the lubricating oil of the gearbox is greater than or equal to the tenth threshold, controlling both the first cooling fan group and the second cooling fan group to operate in a high-speed mode, where the tenth threshold is greater than the ninth threshold.

[0012] Optionally, the control method may further include: when the temperature of the lubricating oil of the gearbox is less than or equal to an eleventh threshold and both the first cooling fan group and the second cooling fan group are in an operating state, controlling both the first cooling fan group and the second cooling fan group to stop operating, where the eleventh threshold is less than the ninth threshold.

[0013] Optionally, the control method may further include: when the temperature of the lubricating oil of the gearbox is less than or equal to a twelfth threshold, controlling both the first cooling fan group and the second cooling fan group to operate in a low-speed mode, where the twelfth threshold is greater than the ninth threshold and less than the tenth threshold.

[0014] According to another aspect of the embodiments of the present disclosure, there is provided a control device for a cooling fan of a gearbox radiator. The cooling fan includes a first cooling fan group and a second cooling fan group. The control method device includes: an acquisition unit configured to acquire the temperature of the gearbox lubricating oil; a control unit configured to: when the temperature of the gearbox lubricating oil is greater than or equal to a first threshold and less than a second threshold, control one of the first cooling fan group and the second cooling fan group to operate in a low-speed mode and control the other of the first cooling fan group and the second cooling fan group to stop operating; when the temperature of the gearbox lubricating oil is greater than or equal to the second threshold and less than a third threshold, control both the first cooling fan group and the second cooling fan group to operate in a low-speed mode; when the temperature of the gearbox lubricating oil is greater than or equal to the third threshold and less than a fourth threshold, control one of the first cooling fan group and the second cooling fan group to operate in a high-speed mode and control the other of the first cooling fan group and the second cooling fan group to operate in a low-speed mode; when the temperature of the gearbox lubricating oil is greater than or equal to the fourth threshold, control both the first cooling fan group and the second cooling fan group to operate in a high-speed mode, wherein the first threshold, the second threshold, the third threshold, and the fourth threshold satisfy the following relationship: the fourth threshold > the third threshold > the second threshold > the first threshold.

[0015] Optionally, the control unit may perform the above control steps when the following condition is satisfied: the ambient temperature around the gearbox is greater than a predetermined threshold.

[0016] Optionally, the control unit may further be configured to: when the temperature of the gearbox lubricating oil is less than or equal to a fifth threshold and at least one of the first cooling fan group and the second cooling fan group is in an operating state, control both the first cooling fan group and the second cooling fan group to stop operating, where the fifth threshold is less than the first threshold.

[0017] Optionally, the control unit may further be configured to: when the temperature of the gearbox lubricating oil is less than or equal to a sixth threshold, control one of the first cooling fan group and the second cooling fan group to operate in a low-speed mode and control the other of the first cooling fan group and the second cooling fan group to stop operating, where the sixth threshold is greater than the first threshold and less than the second threshold.

[0018] Optionally, the control unit may further be configured to: when the temperature of the gearbox lubricating oil is less than or equal to a seventh threshold, control both the first cooling fan group and the second cooling fan group to operate in a low-speed mode, where the seventh threshold is greater than the second threshold and less than the third threshold.

[0019] Optionally, the control unit may further be configured to: when the temperature of the gearbox lubricating oil is less than or equal to an eighth threshold, control one of the first heat dissipation fan group and the second heat dissipation fan group to operate in a high-speed mode, and control the other of the first heat dissipation fan group and the second heat dissipation fan group to operate in a low-speed mode, where the eighth threshold is greater than the third threshold and less than the fourth threshold.

[0020] Optionally, the control unit may further be configured to: in response to the ambient temperature around the gearbox being less than or equal to the predetermined threshold, perform the following operations: when the temperature of the gearbox lubricating oil is greater than or equal to a ninth threshold and less than a tenth threshold, control both the first heat dissipation fan group and the second heat dissipation fan group to operate in a low-speed mode; when the temperature of the gearbox lubricating oil is greater than or equal to the tenth threshold, control both the first heat dissipation fan group and the second heat dissipation fan group to operate in a high-speed mode, where the tenth threshold is greater than the ninth threshold.

[0021] Optionally, the control unit may further be configured to: when the temperature of the gearbox lubricating oil is less than or equal to an eleventh threshold and both the first heat dissipation fan group and the second heat dissipation fan group are in an operating state, control both the first heat dissipation fan group and the second heat dissipation fan group to stop operating, where the eleventh threshold is less than the ninth threshold.

[0022] Optionally, the control unit may further be configured to: when the temperature of the gearbox lubricating oil is less than or equal to a twelfth threshold, control both the first heat dissipation fan group and the second heat dissipation fan group to operate in a low-speed mode, where the twelfth threshold is greater than the ninth threshold and less than the tenth threshold.

[0023] According to another aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium, when the instructions in the computer-readable storage medium are run by at least one processor, causing the at least one processor to execute the control method as described above.

[0024] According to another aspect of the embodiments of the present disclosure, there is provided an electronic device, the electronic device includes: at least one processor; at least one memory storing computer-executable instructions, the computer-executable instructions, when run by the at least one processor, causing the at least one processor to execute the control method as described above.

[0025] According to another aspect of the embodiments of the present disclosure, there is provided a wind power generating set, the wind power generating set includes a gearbox radiator, a first heat dissipation fan group and a second heat dissipation fan group connected to the gearbox radiator, and a controller for controlling the operation of the first heat dissipation fan group and the second heat dissipation fan group, the controller executes the control method as described above when running.

[0026] A control method for a cooling fan of a gearbox radiator and a wind power generation set according to an exemplary embodiment of the present disclosure are provided. By adopting different control strategies to control the high-speed / low-speed operation of multiple groups of cooling fans considering the ambient temperature, efficient heat dissipation / cooling control of the gearbox is achieved, thereby reducing the operation time of the gearbox heat exchanger motor and extending the service life of the gearbox heat exchanger motor.

[0027] In addition, through the control method for the cooling fan of the gearbox radiator and the wind power generation set of the present disclosure, it is also possible to reduce the self-power consumption of the operation of the wind power generation set by reducing the overall operation time of the gearbox heat exchanger motor. In addition, through the control method for the cooling fan of the gearbox radiator and the wind power generation set of the present disclosure, it is also possible to increase the power generation of the wind power generation set by reducing the overall operation time of the gearbox heat exchanger motor.

[0028] Some other aspects and / or advantages of the general concept of the present disclosure will be partially described in the following description, and some will be clear from the description, or can be learned through the implementation of the general concept of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Through the following description with reference to the drawings showing exemplary embodiments, the above and other objects and features of the exemplary embodiments of the present disclosure will become clearer, wherein:

[0030] Figure 1 is a flowchart showing a control method for a cooling fan of a gearbox radiator according to an exemplary embodiment of the present disclosure;

[0031] Figure 2 is a schematic diagram showing the setting structure of a cooling fan of a gearbox radiator according to an exemplary embodiment of the present disclosure;

[0032] Figure 3 is a schematic diagram showing the wiring mode of a motor according to an exemplary embodiment of the present disclosure;

[0033] Figure 4 is a circuit design diagram showing an air-oil heat exchanger fan motor according to an exemplary embodiment of the present disclosure;

[0034] Figure 5 is an exemplary flowchart showing a control method for a cooling fan of a gearbox radiator according to an exemplary embodiment of the present disclosure;

[0035] Figure 6 is a block diagram showing the structure of a control device for a cooling fan of a gearbox radiator according to an exemplary embodiment of the present disclosure;

[0036] Figure 7 is a block diagram showing the structure of an electronic device according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like parts throughout. The embodiments will be described below with reference to the drawings in order to explain the present disclosure.

[0038] As mentioned in the above description, currently, most of the gearbox cooling of wind turbines (e.g., medium-speed permanent magnet wind turbines, doubly-fed wind turbines, etc.) adopts an air-oil cooling solution, and the gearbox air-oil radiator (also called air-oil cooler, air-oil heat exchanger) is mainly used to achieve the heat dissipation control of the entire gearbox. The start-up of the motor of the cooling fan matched with the air-oil heat exchanger may depend on the temperature of the gearbox lubricating oil. For example, when the temperature of the gearbox lubricating oil reaches a preset value, the air-oil heat exchanger will start the cooling fan to ensure that the gearbox lubricating oil is controlled within a certain temperature range.

[0039] Specifically, the gearbox heat dissipation control scheme may include a dual-speed control scheme depending on the gearbox lubricating oil temperature, that is, when the gearbox lubricating oil temperature reaches a preset value, the heat dissipation fan is started at a low speed, and when it reaches another preset value, the heat dissipation fan is started at a high speed. However, this control scheme may cause a significant increase in the self-consumption of the wind turbine generator set and a decrease in the power generation of the wind turbine generator set, thereby reducing the efficiency of the power generation generated by the wind turbine generator set.

[0040] The embodiments of this solution can effectively solve the above problems. Specifically, by adopting the control method of the cooling fan of the gearbox radiator disclosed in this disclosure, the goals of reducing the running time of the cooling fan motor, reducing the self-consumption of the wind turbine generator set, and increasing the power generation of the wind turbine generator set can be achieved.

[0041] Refer to the following Figures 1 to 7 The control method and device of the cooling fan of the gear box radiator according to the present disclosure are specifically described.

[0042] Figure 1 is a flow chart illustrating a control method 100 of a cooling fan of a gearbox radiator according to an exemplary embodiment of the present disclosure.

[0043] In the present disclosure, a wind turbine generator set may be referred to as a set or a wind turbine generator set for short, and each wind turbine generator set may include one or more wind turbines (in the present disclosure, may be referred to as wind turbines for short).

[0044] According to an embodiment of the present disclosure, the cooling fans involved in a control method 100 of a cooling fan of a gearbox radiator (hereinafter referred to as “control method 100 ”) may include two groups of cooling fans, namely, a first cooling fan group and a second cooling fan group.

[0045] As an example, the first heat dissipation fan group and the second heat dissipation fan group may each include at least one heat dissipation fan. For example, Figure 2 is a schematic diagram showing the arrangement structure of the heat dissipation fans of the gearbox radiator according to an exemplary embodiment of the present disclosure. Refer to Figure 2 , Figure 2 In FIG. (a) shown in Figure 2 , an example is shown in which the first heat dissipation fan group and the second heat dissipation fan group each include one heat dissipation fan, and

[0046] In addition, the present disclosure is not limited to Figure 2 the two examples in

[0047] , for example, the present disclosure may also include examples in which the first heat dissipation fan group and the second heat dissipation fan group each include two or more heat dissipation fans.

[0047] In the control method 100 according to an embodiment of the present disclosure, by controlling the operation and start / stop states of the heat dissipation fans at high and low speeds and the combined control of starting different numbers of fans, the self-power consumption during the operation of the wind turbine can be advantageously reduced, thereby increasing the power generation of the wind turbine and enhancing the efficiency of the power generation generated by the wind turbine.

[0048] In addition, regarding the arrangement of the two groups of heat dissipation fans, the two gearbox oil-air heat exchangers can be connected to the gearbox of the component to be cooled in a parallel connection manner through pipelines, and the two gearbox oil-air heat exchangers can be installed above the main shaft of the wind turbine or other components in the nacelle, but are not limited to such installation positions and can also be installed in other suitable positions.

[0049] As an example, the motor of the heat dissipation fan of the gearbox oil-air heat exchanger is powered by the nacelle power distribution unit of the wind turbine (for example, such as Figure 4 the "nacelle power distribution cabinet" shown in Figure 3 ), and the motor can be connected in a circuit, for example, by the YY connection method shown in

[0050] , but the present disclosure is not limited to the above connection method and other forms of connection methods in the related art can also be used.

[0050] In addition, reference can be made to Figure 4 to specifically illustrate the specific circuit for powering the above motor. Figure 4 shows a circuit design diagram of the oil-air heat exchanger fan motor according to an exemplary embodiment of the present disclosure. Refer to Figure 4 , in order to effectively control the heat dissipation fan at high and low speeds, a contactor switch (for example, such as Figure 4 the "low-speed power supply contactor" and "high-speed power supply contactor" shown inFigure 4 The "low-speed protection switch" and "high-speed protection switch" shown) to protect the circuit.

[0051] Next, before specifically describing the control method 100 according to an embodiment of the present disclosure, the core concept of the present disclosure will be described. The control method 100 according to an embodiment of the present disclosure adopts a two-speed control strategy for the motor of the cooling fan of the gearbox radiator. Specifically, the two-speed control strategy according to an embodiment of the present disclosure can divide the high and low speed operating states and start / stop states of the motor of the cooling fan into multiple gears.

[0052] Specifically, the high and low speed start-up cooperation logic of the motor of the cooling fan can be adaptively adjusted according to the ambient temperature and the temperature of the gearbox lubricating oil, ensuring that the motor of the cooling fan operates at a reasonable power and meets the heat dissipation requirements of the gearbox. The start-up of the motor of the cooling fan (which can be simply referred to as the "motor") can be divided into the following five gears: 1) First gear: All motors do not start; 2) Second gear: Start a group of motors at low speed; 3) Third gear: Start two groups of motors at low speed; 4) Fourth gear: Start a group of motors at high speed and start another group of motors at low speed; 5) Fifth gear: Start two groups of motors at high speed.

[0053] Through the two-speed control strategy according to the present disclosure that divides the high and low speed operating states and start / stop states of the motor of the cooling fan into multiple gears, the purpose of achieving precise control for the object to be cooled, saving self-power consumption, and increasing the power generation of the unit can be achieved.

[0054] Refer back to Figure 1 , according to an embodiment of the present disclosure, in step S101, obtain the temperature of the gearbox lubricating oil. It should be understood that this temperature can be obtained through various means. For example, a temperature sensor can be used to monitor this problem, and the monitoring of this temperature can be periodic monitoring or real-time monitoring.

[0055] In step S102, determine whether the temperature of the gearbox lubricating oil is greater than or equal to the first threshold and less than the second threshold.

[0056] If it is determined in step S102 that the temperature of the gearbox lubricating oil satisfies being greater than or equal to the first threshold and less than the second threshold, then execute step S103. In step S103, control one of the first cooling fan group and the second cooling fan group to operate in a low-speed mode, and control the other of the first cooling fan group and the second cooling fan group to stop operating.

[0057] Otherwise, if it is determined in step S102 that the temperature of the gearbox lubricating oil does not satisfy being greater than or equal to the first threshold and less than the second threshold, then execute step S104. In step S104, determine whether the temperature of the gearbox lubricating oil is greater than or equal to the second threshold and less than the third threshold.

[0058] If it is determined in step S104 that the temperature of the gearbox lubricating oil satisfies being greater than or equal to the second threshold and less than the third threshold, then step S105 is executed. In step S105, control both the first cooling fan group and the second cooling fan group to operate in the low-speed mode.

[0059] Otherwise, if it is determined in step S104 that the temperature of the gearbox lubricating oil does not satisfy being greater than or equal to the second threshold and less than the third threshold, then step S106 is executed. In step S106, determine whether the temperature of the gearbox lubricating oil is greater than or equal to the third threshold and less than the fourth threshold.

[0060] If it is determined in step S106 that the temperature of the gearbox lubricating oil satisfies being greater than or equal to the third threshold and less than the fourth threshold, then step S107 is executed. In step S107, control one of the first cooling fan group and the second cooling fan group to operate in the high-speed mode, and control the other of the first cooling fan group and the second cooling fan group to operate in the low-speed mode.

[0061] Otherwise, if it is determined in step S106 that the temperature of the gearbox lubricating oil does not satisfy being greater than or equal to the third threshold and less than the fourth threshold, then step S108 is executed. In step S108, determine whether the temperature of the gearbox lubricating oil is greater than or equal to the fourth threshold.

[0062] If it is determined in step S108 that the temperature of the gearbox lubricating oil satisfies being greater than or equal to the fourth threshold, then step S109 is executed. In step S109, control both the first cooling fan group and the second cooling fan group to operate in the high-speed mode.

[0063] According to an embodiment of the present disclosure, the control method 100 may further include the following steps: after executing step S103, S105, S107 or S109, continue to monitor the temperature of the gearbox lubricating oil, and when the monitored temperature of the gearbox lubricating oil is less than or equal to the fifth threshold and at least one of the first cooling fan group and the second cooling fan group is in an operating state, control both the first cooling fan group and the second cooling fan group to stop operating. Here, the fifth threshold is less than the first threshold.

[0064] According to an embodiment of the present disclosure, the control method 100 may further include the following steps: after executing step S103, S105, S107 or S109, continue to monitor the temperature of the gearbox lubricating oil, and when the monitored temperature of the gearbox lubricating oil is less than or equal to the sixth threshold, control one of the first cooling fan group and the second cooling fan group to operate in the low-speed mode, and control the other of the first cooling fan group and the second cooling fan group to stop operating. Here, the sixth threshold is greater than the first threshold and less than the second threshold.

[0065] According to an embodiment of the present disclosure, the control method 100 may further include the following steps: after performing step S103, S105, S107 or S109, continue to monitor the temperature of the gearbox lubricating oil, and when the monitored temperature of the gearbox lubricating oil is less than or equal to the seventh threshold, control both the first radiator fan group and the second radiator fan group to operate in the low-speed mode. Here, the seventh threshold is greater than the second threshold and less than the third threshold.

[0066] According to an embodiment of the present disclosure, the control method 100 may further include the following steps: after performing step S103, S105, S107 or S109, continue to monitor the temperature of the gearbox lubricating oil, and when the monitored temperature of the gearbox lubricating oil is less than or equal to the eighth threshold, control one of the first radiator fan group and the second radiator fan group to operate in the high-speed mode, and control the other of the first radiator fan group and the second radiator fan group to operate in the low-speed mode. Here, the eighth threshold is greater than the third threshold and less than the fourth threshold.

[0067] Here, the above-mentioned first threshold, second threshold, third threshold and fourth threshold satisfy the following relationship: the fourth threshold > the third threshold > the second threshold > the first threshold.

[0068] In addition, according to an embodiment of the present disclosure, the control method 100 may further include the following steps: if the temperature of the gearbox lubricating oil is less than the first threshold and both the first radiator fan group and the second radiator fan group are in the stopped state, keep both the first radiator fan group and the second radiator fan group in the stopped state.

[0069] As an example, the above control method 100 may be executed in consideration of the ambient temperature. Specifically, the above control method 100 may be executed under the condition that the ambient temperature around the gearbox is greater than a predetermined threshold. For example, the predetermined threshold may be 10°C, but the present disclosure is not limited thereto.

[0070] Here, taking the above-mentioned predetermined threshold as the boundary ambient temperature of the control method is mainly because it is considered that the viscosity of the lubricating oil may increase in the low-temperature state, which has a greater impact on the operating resistance of the heat dissipation system. Therefore, it is important to adopt a suitable predetermined threshold.

[0071] In addition, according to the control method of the present disclosure, by using the ambient temperature as one of the judgment conditions (dividing the range of the ambient temperature conditions), the intelligent and reasonable control of the external cooling radiator fan motor is realized.

[0072] As an example, considering the ambient temperature, the control method 100 further includes the following steps: In response to the ambient temperature around the gearbox being less than or equal to a predetermined threshold, perform the following steps: Step (A), if the temperature of the gearbox lubricating oil is greater than or equal to a ninth threshold and less than a tenth threshold, control both the first radiator fan group and the second radiator fan group to operate in a low-speed mode; Step (B), if the temperature of the gearbox lubricating oil is greater than or equal to the tenth threshold, control both the first radiator fan group and the second radiator fan group to operate in a high-speed mode. Here, the tenth threshold is greater than the ninth threshold.

[0073] It should be noted that the above-mentioned ninth threshold and tenth threshold can be the same as the first threshold and the third threshold respectively, or can be greater than the first threshold and the third threshold respectively. That is to say, the ninth threshold can be greater than or equal to the first threshold, and the tenth threshold can be greater than or equal to the third threshold. In addition, the above-mentioned ninth threshold and tenth threshold can be the same as the second threshold and the fourth threshold respectively, or can be greater than the second threshold and the fourth threshold respectively.

[0074] Preferably, the ninth threshold can be greater than the second threshold, and the tenth threshold can be greater than the fourth threshold.

[0075] By adopting temperature thresholds of a ninth threshold higher than the second threshold and a tenth threshold higher than the fourth threshold when the gearbox is in a relatively low ambient temperature, the radiator fan can be enabled relatively later than when the gearbox is in a relatively high ambient temperature, thereby achieving the effect of energy conservation, and can also effectively avoid the problem that the viscosity of the gearbox lubricating oil is large at low temperatures and has a greater impact on the operating resistance of the unit system.

[0076] In addition, as an example, the control method 100 further includes the following steps: After performing step (A) or (B), continue to monitor the temperature of the gearbox lubricating oil, and when it is monitored that the temperature of the gearbox lubricating oil is less than or equal to an eleventh threshold and both the first radiator fan group and the second radiator fan group are in an operating state, control both the first radiator fan group and the second radiator fan group to stop operating. Here, the eleventh threshold is less than the ninth threshold.

[0077] As an example, the control method 100 further includes the following steps: After performing step (A) or (B), continue to monitor the temperature of the gearbox lubricating oil, and when it is monitored that the temperature of the gearbox lubricating oil is less than or equal to a twelfth threshold, control both the first radiator fan group and the second radiator fan group to operate in a low-speed mode. Here, the twelfth threshold is greater than the ninth threshold and less than the tenth threshold.

[0078] In addition, according to an embodiment of the present disclosure, the control method 100 may further include the following steps: If the temperature of the gearbox lubricating oil is less than the ninth threshold and both the first heat dissipation fan group and the second heat dissipation fan group are in a stopped operating state, then keep both the first heat dissipation fan group and the second heat dissipation fan group in the stopped operating state.

[0079] The following refers to Figure 5 An exemplary control flow of the above control method 100 according to the present disclosure will be described by way of example. Figure 5 FIG. is an exemplary flowchart showing a control method for a heat dissipation fan of a gearbox radiator according to an exemplary embodiment of the present disclosure.

[0080] In the example, it is assumed that each of the two groups of heat dissipation fans includes one fan, the threshold related to the ambient temperature monitored by the unit is set to 10 °C, the thresholds related to the lubricating oil temperature being monitored (e.g., real-time monitoring) are T1', T3', T1, T2, T3, and T4, and T3' > T1' and T4 > T3 > T2 > T1. Then the specific steps included in the exemplary flowchart are as follows:

[0081] (1) If the ambient temperature is detected to be less than or equal to 10 °C, then perform the following operations:

[0082] 1) If the lubricating oil temperature is less than T1', then neither of the two fan motors is started;

[0083] 2) If the lubricating oil temperature reaches T1', then start the two fan motors in the low-speed mode. At this time, the operating states of both fan motors are low-speed operation;

[0084] 3) When it is monitored that the lubricating oil temperature is less than or equal to T1' - 5 (i.e., the lubricating oil temperature has decreased by at least 5 °C at this time), stop both fan motors;

[0085] 4) If the lubricating oil temperature reaches T3', then start the two fan motors in the high-speed mode. At this time, the operating states of both fan motors are high-speed operation;

[0086] 5) When it is monitored that the lubricating oil temperature is less than or equal to T3' - 5 (i.e., the lubricating oil temperature has decreased by at least 5 °C at this time), switch the operating states of both fan motors to low-speed operation.

[0087] In the above example, T1' may correspond to the ninth threshold as described above, T3' may correspond to the tenth threshold as described above, T1' - 5 may correspond to the eleventh threshold as described above, and T3' - 5 may correspond to the twelfth threshold as described above. However, it should be noted that these are merely examples of the above respective thresholds, and the present disclosure is not limited thereto.

[0088] (2) If the ambient temperature is detected to be greater than 10°C, then perform the following operations:

[0089] 1) If the lubricating oil temperature is less than T1, then neither of the two fan motors starts;

[0090] 2) If the lubricating oil temperature reaches T1, then start one fan motor in the low-speed mode. At this time, its operating state is low-speed operation, and the other fan motor does not start;

[0091] 3) When it is monitored that the lubricating oil temperature is less than or equal to T1 - 2 (that is, the lubricating oil temperature at this time has decreased by at least 2°C), stop the running fan motor, and keep the other fan motor not running;

[0092] 3) If the lubricating oil temperature reaches T2, then start two fan motors in the low-speed mode. At this time, the operating states of both fan motors are low-speed operation;

[0093] 4) When it is monitored that the lubricating oil temperature is less than or equal to T2 - 2 (that is, the lubricating oil temperature at this time has decreased by at least 2°C), stop one fan motor and keep the other fan motor running at low speed;

[0094] 5) If the lubricating oil temperature reaches T3, then start one fan motor in the low-speed mode and start the other fan motor in the high-speed mode. At this time, the operating state of one fan motor is low-speed operation, and the operating state of the other fan motor is high-speed operation.

[0095] 6) When it is monitored that the lubricating oil temperature is less than or equal to T3 - 2 (that is, the lubricating oil temperature at this time has decreased by at least 2°C), switch the operating state of the fan motor running at high speed to low-speed operation so that both fan motors run at low speed;

[0096] 7) If the lubricating oil temperature reaches T4, then start two fan motors in the high-speed mode. At this time, their operating states are both high-speed operation;

[0097] 8) When it is monitored that the lubricating oil temperature is less than or equal to T4 - 2 (that is, the lubricating oil temperature at this time has decreased by at least 2°C), switch the operating state of one of the two fan motors running at high speed to low-speed operation, and keep the operating state of the other fan motor in high-speed operation.

[0098] In the above example, T1 may correspond to the first threshold as described above, T2 may correspond to the second threshold as described above, T3 may correspond to the third threshold as described above, T4 may correspond to the fourth threshold as described above, T1-2 may correspond to the fifth threshold as described above, T2-2 may correspond to the sixth threshold as described above, T3-2 may correspond to the seventh threshold as described above, and T4-2 may correspond to the eighth threshold as described above. However, it should be noted that these are merely examples of the above-mentioned respective thresholds, and the present disclosure is not limited thereto.

[0099] Here, it should be noted that in the above control process, when the fan motor has been started (i.e., in the running state), the switching between the low-speed and high-speed operating states does not require restarting the motor, but only switching the rotational speed. For example, although it is shown in Figure 5 that the operation of "starting two low-speed fan motors" will be returned to under the two conditions of "lubricating oil temperature is less than T3'" and "lubricating oil temperature is less than or equal to T3'-5", the "starting" operation at this time should correspond to the "switching rotational speed" operation as described above, rather than restarting the two fan motors.

[0100] Through the control method of the cooling fan of the gearbox radiator proposed by the present disclosure, it is possible to efficiently achieve the heat dissipation / cooling control of the gearbox by controlling the high-speed / low-speed operation of multiple groups of cooling fans by considering the ambient temperature and adopting different control strategies, thereby reducing the running time of the gearbox heat exchanger motor and extending the service life of the gearbox heat exchanger motor.

[0101] In addition, through the control method of the cooling fan of the gearbox radiator of the present disclosure, it is also possible to reduce the self-power consumption of the operation of the wind power generation unit by reducing the overall running time of the gearbox heat exchanger motor.

[0102] In addition, through the control method of the cooling fan of the gearbox radiator and the wind power generation unit of the present disclosure, it is also possible to increase the power generation of the wind power generation unit by reducing the overall running time of the gearbox heat exchanger motor.

[0103] Figure 6 is a structural block diagram showing a control device 600 of a cooling fan of a gearbox radiator according to an exemplary embodiment of the present disclosure. Here, the cooling fan may include a first cooling fan group and a second cooling fan group. For example, the first cooling fan group and the second cooling fan group may each include at least one fan.

[0104] Referring to Figure 6 , the control device 600 of the cooling fan of the gearbox radiator includes: an acquisition unit 610 and a control unit 620.

[0105] According to an embodiment of the present disclosure, the acquisition unit 610 is configured to: acquire the temperature of the lubricating oil of the gearbox.

[0106] According to an embodiment of the present disclosure, the control unit 620 is configured to: when the temperature of the lubricating oil of the gearbox is greater than or equal to the first threshold and less than the second threshold, control one of the first cooling fan group and the second cooling fan group to operate in a low-speed mode, and control the other of the first cooling fan group and the second cooling fan group to stop operating; when the temperature of the lubricating oil of the gearbox is greater than or equal to the second threshold and less than the third threshold, control both the first cooling fan group and the second cooling fan group to operate in a low-speed mode; when the temperature of the lubricating oil of the gearbox is greater than or equal to the third threshold and less than the fourth threshold, control one of the first cooling fan group and the second cooling fan group to operate in a high-speed mode, and control the other of the first cooling fan group and the second cooling fan group to operate in a low-speed mode; when the temperature of the lubricating oil of the gearbox is greater than or equal to the fourth threshold, control both the first cooling fan group and the second cooling fan group to operate in a high-speed mode.

[0107] Here, the first threshold, the second threshold, the third threshold, and the fourth threshold satisfy the following relationship: the fourth threshold > the third threshold > the second threshold > the first threshold.

[0108] As an example, when the following conditions are met, the control unit 620 executes the above control steps: the ambient temperature around the gearbox is greater than a predetermined threshold.

[0109] According to an embodiment of the present disclosure, the control unit 620 may also be configured to: when it is monitored that the temperature of the lubricating oil of the gearbox is less than or equal to the fifth threshold and at least one of the first cooling fan group and the second cooling fan group is in an operating state, control both the first cooling fan group and the second cooling fan group to stop operating. Here, the fifth threshold is less than the first threshold.

[0110] According to an embodiment of the present disclosure, the control unit 620 may also be configured to: when it is monitored that the temperature of the lubricating oil of the gearbox is less than or equal to the sixth threshold, control one of the first cooling fan group and the second cooling fan group to operate in a low-speed mode, and control the other of the first cooling fan group and the second cooling fan group to stop operating. Here, the sixth threshold is greater than the first threshold and less than the second threshold.

[0111] According to an embodiment of the present disclosure, the control unit 620 may also be configured to: when it is monitored that the temperature of the lubricating oil of the gearbox is less than or equal to the seventh threshold, control both the first cooling fan group and the second cooling fan group to operate in a low-speed mode. Here, the seventh threshold is greater than the second threshold and less than the third threshold.

[0112] According to an embodiment of the present disclosure, the control unit 620 may further be configured to: when it is monitored that the temperature of the gearbox lubricating oil is less than or equal to an eighth threshold, control one of the first radiator fan group and the second radiator fan group to operate in a high-speed mode, and control the other of the first radiator fan group and the second radiator fan group to operate in a low-speed mode. Here, the eighth threshold is greater than the third threshold and less than the fourth threshold.

[0113] According to an embodiment of the present disclosure, the control unit 620 may further be configured to: when the temperature of the gearbox lubricating oil is less than a first threshold and both the first radiator fan group and the second radiator fan group are in a stopped state, keep both the first radiator fan group and the second radiator fan group in a stopped state.

[0114] As an example, the control unit 620 may further be configured to: in response to the ambient temperature around the gearbox being less than or equal to a predetermined threshold, perform the following operations: when the temperature of the gearbox lubricating oil is greater than or equal to a ninth threshold and less than a tenth threshold, control both the first radiator fan group and the second radiator fan group to operate in a low-speed mode; when the temperature of the gearbox lubricating oil is greater than or equal to the tenth threshold, control both the first radiator fan group and the second radiator fan group to operate in a high-speed mode. Here, the tenth threshold is greater than the ninth threshold.

[0115] As an example, the control unit 620 may further be configured to: when it is monitored that the temperature of the gearbox lubricating oil is less than or equal to an eleventh threshold and both the first radiator fan group and the second radiator fan group are in an operating state, control both the first radiator fan group and the second radiator fan group to stop operating. Here, the eleventh threshold is less than the ninth threshold.

[0116] As an example, the control unit 620 may further be configured to: when it is monitored that the temperature of the gearbox lubricating oil is less than or equal to a twelfth threshold, control both the first radiator fan group and the second radiator fan group to operate in a low-speed mode, where the twelfth threshold is greater than the ninth threshold and less than the tenth threshold.

[0117] As an example, the control unit 620 may further be configured to: when the temperature of the gearbox lubricating oil is less than the ninth threshold and both the first radiator fan group and the second radiator fan group are in a stopped state, keep both the first radiator fan group and the second radiator fan group in a stopped state.

[0118] As an example, the control device 600 for the radiator fan of the gearbox may be provided in a controller that controls the operation of the first radiator fan group and the second radiator fan group, and the controller performs the control method as described above when operating. In this case, the wind turbine according to an embodiment of the present disclosure may include a gearbox radiator, a first radiator fan group and a second radiator fan group connected to the gearbox radiator, and the controller.

[0119] It should be understood that the specific processing performed by the control device 600 of the cooling fan of the gearbox radiator according to the exemplary embodiments of the present disclosure has been described in detail with reference to Figures 1 to 5 and will not be repeated here.

[0120] It should be understood that each unit in the control device of the cooling fan of the gearbox radiator according to the exemplary embodiments of the present disclosure can be implemented as a hardware component and / or a software component. Those skilled in the art can implement each unit using, for example, a field programmable gate array (FPGA) or an application specific integrated circuit (ASIC) according to the processing performed by the defined units.

[0121] The exemplary embodiments of the present disclosure provide a computer-readable storage medium storing a computer program. When the instructions in the computer-readable storage medium are run by at least one processor, at least one processor is caused to execute the control method described above. The computer-readable storage medium is any data storage device that can store data read by a computer system. Examples of computer-readable storage media include: read-only memory, random access memory, compact disc read-only memory, magnetic tapes, floppy disks, optical data storage devices, and carrier waves (such as data transmission via the Internet through wired or wireless transmission paths).

[0122] Figure 7 The structural block diagram of an electronic device 700 according to the exemplary embodiments of the present disclosure is shown.

[0123] The electronic device 700 according to the exemplary embodiments of the present disclosure includes: at least one processor 710 and at least one memory 720. The at least one memory 720 stores computer-executable instructions that, when run by the at least one processor 710, cause the at least one processor 710 to execute the control method described above.

[0124] Although some exemplary embodiments of the present disclosure have been shown and described, those skilled in the art should understand that these embodiments can be modified without departing from the principles and spirit of the present disclosure as defined by the claims and their equivalents.

Claims

1. A control method for a cooling fan of a gearbox radiator, characterized in that, the cooling fan includes a first cooling fan group and a second cooling fan group, and the control method includes: Obtaining the temperature of the gearbox lubricating oil; When the temperature of the gearbox lubricating oil is greater than or equal to a first threshold and less than a second threshold, controlling one of the first cooling fan group and the second cooling fan group to operate in a low-speed mode, and controlling the other of the first cooling fan group and the second cooling fan group to stop operating; When the temperature of the gearbox lubricating oil is greater than or equal to the second threshold and less than the third threshold, controlling both the first cooling fan group and the second cooling fan group to operate in a low-speed mode; When the temperature of the gearbox lubricating oil is greater than or equal to the third threshold and less than the fourth threshold, controlling one of the first cooling fan group and the second cooling fan group to operate in a high-speed mode, and controlling the other of the first cooling fan group and the second cooling fan group to operate in a low-speed mode; When the temperature of the gearbox lubricating oil is greater than or equal to the fourth threshold, controlling both the first cooling fan group and the second cooling fan group to operate in a high-speed mode, wherein, the first threshold, the second threshold, the third threshold and the fourth threshold satisfy the following relationship: Fourth threshold > Third threshold > Second threshold > First threshold.

2. The control method according to claim 1, characterized in that, the control method is executed when the following condition is met: the ambient temperature around the gearbox is greater than a predetermined threshold.

3. The control method according to claim 1, characterized in that, the control method further includes: When the temperature of the gearbox lubricating oil is less than or equal to a fifth threshold and at least one of the first cooling fan group and the second cooling fan group is in an operating state, controlling both the first cooling fan group and the second cooling fan group to stop operating, wherein, the fifth threshold is less than the first threshold.

4. The control method according to claim 1, characterized in that, the control method further includes: When the temperature of the gearbox lubricating oil is less than or equal to a sixth threshold, controlling one of the first cooling fan group and the second cooling fan group to operate in a low-speed mode, and controlling the other of the first cooling fan group and the second cooling fan group to stop operating, wherein, the sixth threshold is greater than the first threshold and less than the second threshold.

5. The control method according to claim 1, characterized in that, the control method further includes: When the temperature of the gearbox lubricating oil is less than or equal to a seventh threshold, controlling both the first cooling fan group and the second cooling fan group to operate in a low-speed mode, wherein, the seventh threshold is greater than the second threshold and less than the third threshold.

6. The control method according to claim 1, characterized in that, the control method further includes: When the temperature of the gearbox lubricating oil is less than or equal to an eighth threshold, controlling one of the first cooling fan group and the second cooling fan group to operate in a high-speed mode, and controlling the other of the first cooling fan group and the second cooling fan group to operate in a low-speed mode, wherein, the eighth threshold is greater than the third threshold and less than the fourth threshold.

7. The control method according to claim 2, characterized in that, The control method further includes: in response to the ambient temperature around the gearbox being less than or equal to the predetermined threshold, performing the following steps: When the temperature of the lubricating oil of the gearbox is greater than or equal to the ninth threshold and less than the tenth threshold, controlling both the first radiator fan group and the second radiator fan group to operate in the low-speed mode; When the temperature of the lubricating oil of the gearbox is greater than or equal to the tenth threshold, controlling both the first radiator fan group and the second radiator fan group to operate in the high-speed mode, wherein, the tenth threshold is greater than the ninth threshold.

8. The control method according to claim 7, wherein, the control method further includes: When the temperature of the lubricating oil of the gearbox is less than or equal to the eleventh threshold and both the first radiator fan group and the second radiator fan group are in the operating state, controlling both the first radiator fan group and the second radiator fan group to stop operating, wherein, the eleventh threshold is less than the ninth threshold.

9. The control method according to claim 7, wherein, the control method further includes: When the temperature of the lubricating oil of the gearbox is less than or equal to the twelfth threshold, controlling both the first radiator fan group and the second radiator fan group to operate in the low-speed mode, wherein, the twelfth threshold is greater than the ninth threshold and less than the tenth threshold.

10. A computer-readable storage medium, wherein, When the instructions in the computer-readable storage medium are run by at least one processor, causing the at least one processor to execute the control method according to any one of claims 1 to 9.

11. An electronic device, including: At least one processor; At least one memory storing computer-executable instructions, wherein, when the computer-executable instructions are run by the at least one processor, causing the at least one processor to execute the control method according to any one of claims 1 to 9.

12. A wind turbine generator set, wherein, The wind turbine generator set includes a gearbox radiator, a first radiator fan group and a second radiator fan group connected to the gearbox radiator, and a controller for controlling the operation of the first radiator fan group and the second radiator fan group. The controller executes the control method according to any one of claims 1 to 9 during operation.

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