Wind power generation system

Abstract

The utility model relates to a wind power generation system which comprises a wind generating set and a lubrication management module, the lubrication management module comprises power storage equipment, a lubrication device and a control system, the power storage equipment comprises a power generation device and an energy storage device, the energy storage device is connected with the power generation device, and the power generation device is configured to convert clean energy into electric energy; the energy storage device is configured to receive and store at least part of electric energy, the lubricating device is electrically connected with the energy storage device, the lubricating device is at least partially integrated in a gearbox of the wind generating set, the control system is in communication connection with the energy storage device, and the control system is configured to control the energy storage device to supply power to the lubricating device. The wind power generation system is provided with the lubrication management module, the gear box in the wind power generation unit can be automatically lubricated, and the failure risk of the gear box is reduced.

Description

Technical Field

[0001] This application relates to the technical field of wind power generation, and particularly to a wind power generation system. Background Art

[0002] A wind turbine generator converts wind energy into electrical energy and is an application of new wind power energy. For some models of wind turbine generators, they are equipped with gearboxes.

[0003] During the idling period of the wind turbine generator, such as before the wind turbine generator is hoisted and commissioned to be connected to the grid, or in the case of heavy snow blocking the mountains in onshore wind farms or severe sea conditions in deep - sea offshore wind farms, the gearbox will be in a static state for a long time, resulting in increased internal corrosion of the gearbox, affecting its service life and posing a risk of short - term failure. Summary of the Utility Model

[0004] This application provides a wind power generation system configured with a lubrication management module, which can automatically lubricate the gearbox and reduce the failure risk of the gearbox.

[0005] On the one hand, according to an embodiment of the present application, a wind power generation system is proposed, including a wind turbine generator and a lubrication management module. The lubrication management module is used for the gearbox of the wind turbine generator and includes: a power storage device, including a power generation device and an energy storage device. The energy storage device is connected to the power generation device. The power generation device is configured to convert clean energy into electrical energy, and the energy storage device is configured to receive and store at least part of the electrical energy; a lubrication device, electrically connected to the energy storage device, and at least part of the lubrication device is integrated into the gearbox of the wind turbine generator; a control system, communicatively connected to the energy storage device, and the control system is configured to control the energy storage device to supply power to the lubrication device.

[0006] According to an aspect of an embodiment of the present application, the number of wind turbine generators is two or more. The lubrication management module includes a plurality of lubrication devices, and the plurality of lubrication devices are respectively integrated into at least part of the gearboxes of the wind turbine generators. The energy storage device is configured to supply power to each lubrication device.

[0007] According to an aspect of an embodiment of the present application, the wind power generation system further includes a bearing device, and at least part of the power storage device is disposed on the bearing device. The bearing device includes at least one of a walking component and a floating platform.

[0008] According to an aspect of an embodiment of the present application, the power generation device includes a wind wheel assembly and a power conversion module. The wind wheel assembly is configured to convert wind energy into electrical energy, and the wind wheel assembly is connected to the energy storage device through the power conversion module. The power conversion module converts the electrical energy into the charging voltage of the energy storage device.

[0009] According to one aspect of the embodiments of the present application, the lubrication management module further includes a power detection component for detecting the power in the energy storage device; the lubrication device includes more than two lubrication components, and the more than two lubrication components respectively correspond to multiple lubrication regions of the gearbox, and the control system is configured to supply power to at least some of the lubrication components according to the power.

[0010] According to one aspect of the embodiments of the present application, the lubrication device further includes more than two contactors, the contactors are arranged corresponding to the lubrication components, the lubrication components are respectively connected to the energy storage device through the contactors, the contactors are communicatively connected to the control system, and the control system is configured to respectively control the contactors to open according to the power to supply power to the lubrication components in a predetermined order.

[0011] According to one aspect of the embodiments of the present application, the lubrication management module further includes a first temperature detection module and a first thermal management module arranged in the energy storage device, the first temperature detection module is connected to the control system; the first temperature detection module is used for detecting the ambient temperature of the energy storage device, and the control system is configured to control the energy storage device to supply power to the first thermal management module according to the ambient temperature.

[0012] According to one aspect of the embodiments of the present application, the lubrication management module further includes a second temperature detection module and a second thermal management module arranged in the gearbox, the second temperature detection module is connected to the control system; the second temperature detection module is used for detecting the temperature of the lubricating medium injected into the gearbox, and the control system is configured to control the energy storage device to supply power to the second thermal management module according to the temperature of the lubricating medium.

[0013] According to one aspect of the embodiments of the present application, the control system includes a timing module, the timing module is used for calculating the idle time of the lubrication device, and when the idle time reaches a preset time, controlling the energy storage device to supply power to the lubrication device.

[0014] According to one aspect of the embodiments of the present application, the lubrication management module further includes an Internet of Things module and a remote client, the energy storage device supplies power to the Internet of Things module, and the control system is communicatively connected to the remote client through the Internet of Things module to perform information interaction between the control system and the remote client.

[0015] The wind power generation system provided by the embodiments of the present application includes a wind turbine generator set and a lubrication management module, and is configured with a lubrication management module. The lubrication management module includes a power storage device, a lubrication device and a control system. Through a power generation device and an energy storage device arranged in the power storage device, self-generation can be realized, clean energy can be converted into electric energy, and stored in the energy storage device. During the idle period of the wind turbine generator set, the control system can also control the energy storage device to supply power to the lubrication device by using the electric energy stored in the energy storage device, so as to realize automatic lubrication of the gearbox and reduce the failure risk of the gearbox. Description of the Drawings

[0016] The features, advantages, and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0017] Figure 1 is a schematic structural diagram of a wind turbine provided by some embodiments of the present application;

[0018] Figure 2 is a schematic structural diagram of a lubrication management module provided by some embodiments of the present application;

[0019] Figure 3 is a schematic structural diagram of a power generation device provided by some embodiments of the present application;

[0020] Figure 4 is a schematic diagram of the working mode of a lubrication management module provided by some embodiments of the present application;

[0021] Figure 5 is a schematic diagram of the charge-discharge control strategy of a lubrication management module in the offline state of the automatic mode provided by some embodiments of the present application;

[0022] Figure 6 is a schematic diagram of the charge-discharge control strategy of a lubrication management module in the standby and lubrication states of the automatic mode provided by some embodiments of the present application;

[0023] Figure 7 is a schematic diagram of the charge-discharge control strategy of a lubrication management module in the manual mode provided by some embodiments of the present application.

[0024] In the accompanying drawings:

[0025] 10 - Lubrication management module; 20 - Wind turbine; 210 - Tower barrel; 220 - Nacelle; 230 - Generator; 240 - Gearbox; 250 - Impeller;

[0026] 1 - Energy storage device; 11 - Power generation device; 111 - Wind wheel assembly; 112 - Power conversion module; 12 - Energy storage device; 13 - First contactor; 2 - Lubrication device; 21 - Lubrication assembly; 211 - Lubrication pump motor; 212 - Frequency converter; 213 - Second contactor; 21a - First lubrication assembly; 21b - Second lubrication assembly; 21c - Third lubrication assembly; 3 - Control system; 4 - Carrying device; 5 - First temperature control module; 51 - First temperature detection module; 52 - First thermal management module; 53 - Third contactor; 6 - Second temperature control module; 61 - Second temperature detection module; 62 - Second thermal management module; 63 - Fourth contactor; 7 - Internet of Things module; 8 - Remote client; 9 - DC voltage regulating power supply.

[0027] In the accompanying drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale. Detailed Embodiments

[0028] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, many specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present application by showing examples of the present application. In the drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessarily obscuring the present application; and, for clarity, the dimensions of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0029] The orientation terms appearing in the following description are all the directions shown in the figures and do not limit the wind power generation system of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly defined and limited, the terms "installed" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0030] For a better understanding of the present application, the following will be combined with Figures 1 to 7 to describe in detail the wind power generation system of the embodiments of the present application.

[0031] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of the wind turbine generator set 20 of the embodiment of the present application. For some models of the wind turbine generator set 20, such as the semi-direct drive model or the double-fed model, it includes a tower barrel 210, a nacelle 220, a generator 230, a gearbox 240, and an impeller 250. The nacelle 220 is arranged at the top of the tower barrel 210. The gearbox 240 and the generator 230 are arranged in the nacelle 220, and can be located inside the nacelle 220, and of course can also be located outside the nacelle 220. The impeller 250 is connected to the rotating shaft of the generator 230 through the gearbox 240. When the wind acts on the impeller 250, it drives the impeller 250 to rotate. The gearbox 240 is used to increase the low rotation speed of the impeller 250 to a rotation speed suitable for the generator 230 to be connected to the grid, so as to convert wind energy into electrical energy.

[0032] In the wind turbine 20 in the related art, before the wind turbine 20 is hoisted, debugged and connected to the grid, or during a power outage, when there is a situation of heavy snow blocking the mountains in onshore wind farms or the sea conditions are harsh in deep - sea wind farms, the wind turbine 20 is in a power - off standby state for a long time, and the gearbox 240 remains stationary for a long time, resulting in increased internal corrosion of the gearbox 240, affecting its service life, and there is a risk of short - term failure. Therefore, it is necessary to lubricate the gearbox 240 regularly.

[0033] However, at present, in order to achieve regular lubrication of the gearbox 240, it is necessary for workers to transport the generator 230 to the location where the wind turbine 20 is located for power supply and lubrication. For example, for onshore wind turbines 20, workers need to supply power through a mobile diesel generator 230 set. For offshore wind turbines 20, workers need to go to sea by an operation and maintenance ship and use the diesel generator 230 of the operation and maintenance ship to supply power to the wind turbine 20 to perform the lubrication operation of the gearbox 240. The above methods increase costs and are affected by environmental conditions. It is difficult to achieve timely lubrication of the gearbox 240 under harsh working conditions, and there are relatively large potential hazards.

[0034] To overcome the above - mentioned defects, the present application provides a wind power generation system configured with a lubrication management module 10. The lubrication management module 10 can be used for the wind turbines 20 in the above - mentioned various embodiments to achieve lubrication of the gearbox 240. Of course, it can also be produced or sold as an independent component.

[0035] Please refer to Figure 2 , Figure 2 which shows a schematic diagram of the lubrication management module 10 in an embodiment of the present application.

[0036] An embodiment of the present application provides a wind power generation system, including a wind turbine 20 and a lubrication management module 10. The lubrication management module 10 is used for the gearbox 240 of the wind turbine 20 and includes a power storage device 1, a lubrication device 2, and a control system 3. The power storage device 1 includes a power generation device 11 and an energy storage device 12. The energy storage device 12 is connected to the power generation device 11. The power generation device 11 is configured to convert clean energy into electrical energy, and the energy storage device 12 is configured to receive and store at least part of the electrical energy. The lubrication device 2 is electrically connected to the energy storage device 12. The lubrication device 2 is at least partially integrated into the gearbox 240 of the wind turbine 20. The control system 3 is communicatively connected to the energy storage device 12, and the control system 3 is configured to control the energy storage device 12 to supply power to the lubrication device 2.

[0037] In the wind power generation system according to the embodiments of the present application, a lubrication management module 10 is configured. The lubrication management module 10 includes a power storage device 1, a lubrication device 2, and a control system 3. Through a power generation device 11 and an energy storage device 12 arranged in the power storage device 1, self-power generation can be achieved, clean energy can be converted into electric energy, and stored in the energy storage device 12. During the downtime of the wind turbine generator set 20, the energy storage device 12 can also be controlled by the control system 3 to supply power to the lubrication device 2 by using the electric energy stored in the energy storage device 12, so as to realize the automatic lubrication of the gearbox 240 and reduce the failure risk of the gearbox 240.

[0038] It can be understood that the power storage device 1 is independently arranged from the wind turbine generator set 20. The power storage device 1 can be installed outdoors and can achieve automatic power backup. Thus, during the downtime of the wind turbine generator set 20, the stored electric energy can be used to supply power to the lubrication device 2, without relying on workers to transport the generator 230 to the location of the wind turbine generator set 20 to achieve manual power supply and on-site operation, saving costs, and at the same time, the lubrication of the gearbox 240 can be realized more timely and the reliability is stronger.

[0039] In some optional embodiments, the number of wind turbine generator sets 20 is more than two. The lubrication management module 10 includes a plurality of lubrication devices 2. The plurality of lubrication devices 2 are respectively integrated into at least part of the gearboxes 240 of the wind turbine generator sets 20, and the energy storage device 12 is configured to supply power to each lubrication device 2.

[0040] When the number of wind turbine generator sets 20 is more than two, the same energy storage device 12 can be used to supply power to the lubrication devices 2 integrated in each wind turbine generator set 20, so as to realize the lubrication of more than two wind turbine generator sets 20 with higher efficiency.

[0041] Please refer to Figure 2 and Figure 3 , in some optional embodiments, the wind power generation system further includes a bearing device 4. At least part of the power storage device 1 is arranged on the bearing device 4. The bearing device 4 includes at least one of a walking component and a floating platform.

[0042] Among them, the type of the bearing device 4 can be adjusted according to the use environment of the wind turbine generator set 20. For example, when the wind turbine generator set 20 is set on land, the bearing device 4 can be set as a walking component, such as a portable handcart. The portable handcart is set outdoors and fixed by a pull rope. When the wind turbine generator set 20 is set at sea, the bearing device 4 can be set as a floating platform. For example, the wind power generation system includes a first floating platform and a second floating platform that are separately arranged. The wind turbine generator set 20 is set on the first floating platform, and the power storage device 1 is set on the second floating platform to realize the setting of the power storage device 1.

[0043] By setting the carrying device 4 as a portable moving component, it is more convenient to adjust the position or angle of the power storage device 1 so that the power storage device 1 can be placed in an area where clean energy can be better utilized, and self-power generation can be more reliably achieved.

[0044] Optionally, the carrying device 4 includes a driving part, a sensor, and a carrying platform. The carrying platform is used to support and fix the power storage device 1. The energy storage device 12 is electrically connected to the driving part. The sensor is used to detect the environmental information of the carrying device 4 and upload it to the control system 3. The control system 3 is used to control the driving part to move the carrying platform to adjust the position or angle of the power storage device 1, so that the power storage device 1 can be moved to an area where clean energy can be better utilized, and self-power generation can be more reliably achieved.

[0045] Please refer to Figure 2 for a detailed description of the components of the lubrication management module 10 below.

[0046] In some alternative embodiments, the power generation device 11 includes a wind turbine assembly 111 and a power conversion module 112. The wind turbine assembly 111 is configured to convert wind energy into electrical energy. The wind turbine assembly 111 is connected to the energy storage device 12 through the power conversion module 112, and the power conversion module 112 converts the electrical energy into the charging voltage of the energy storage device 12.

[0047] When self-power generation is carried out in the form of wind power generation, the power generation device 11 may include a wind turbine assembly 111 and a power conversion module 112. The wind turbine assembly 111 may be set as a small wind power generation unit 20, which is more suitable for temporary and convenient installation and can meet the power generation requirements of the lubrication management module 10. Among them, the power conversion module 112 is a DC / DC converter, which is used to convert the voltage at the output end of the wind turbine assembly 111 into the charging voltage of the energy storage device 12 to store electrical energy in the energy storage device 12.

[0048] In some other embodiments, the power generation device 11 may adopt the form of solar power generation. For example, the power generation device 11 may be set as a photovoltaic module to convert solar energy into electrical energy for self-power generation. Or, when the wind power generation unit 20 is installed at sea, the power generation device 11 may also adopt the form of hydraulic power generation. For example, the power generation device 11 may be set as a small water turbine generator 230.

[0049] That is, the power generation device 11 can be self-powered using any existing power generation device 11. The power generation device 11 can be set to one or multiple. Multiple power generation devices 11 can be set to different types. For example, some power generation devices 11 are set as wind turbine components 111, and some power generation devices 11 are set as photovoltaic components to meet the power generation needs under different working conditions. The specific structure of the power generation device 11 can be adjusted according to the actual situation, and it can meet the charging requirements of the energy storage device 12 while being convenient for installation.

[0050] For ease of description, the following still takes the power generation device 11 including the wind turbine component 111 and the power conversion module 112 as an example for illustration.

[0051] As an embodiment, the power of the wind turbine component 111 is 2KW, and the output terminal voltage of the wind turbine component 111 can be set to 48V. The energy storage device 12 can be set as a storage battery, and the number of storage batteries can be set to multiple. For example, 40 storage batteries can be set, and the voltage of each storage battery is 12V. The total voltage for charging the energy storage device 12 is 480V. The power conversion module 112 converts the output terminal voltage of 48V of the wind turbine component 111 into 480V and supplies it to the energy storage device 12 to store electrical energy.

[0052] Optionally, the number of storage batteries and the capacity of each storage battery can be adjusted according to the actual needs of the wind turbine generator 20, as long as it can meet the power supply requirements of the lubrication device 2.

[0053] In some optional embodiments, the lubrication management module 10 further includes a power detection component for detecting the power Q in the energy storage device 12.

[0054] By setting the power detection component, when the power detection component monitors that the power Q in the energy storage device 12 is insufficient, for example, when the power Q in the energy storage device 12 is less than or equal to the first threshold, the power generation device 11 can be controlled to work through the control system 3 to charge the energy storage device 12. The first threshold can be the minimum power that can supply power to the lubrication device 2, so that the power Q in the energy storage device 12 always remains above the first threshold, thereby realizing the effective power supply to the lubrication device 2.

[0055] Moreover, by setting the power detection component, when the power detection component monitors that the power in the energy storage device 12 is greater than or equal to the second threshold, the power generation device 11 can be controlled to stop working. The second threshold is greater than the first threshold, so that the power in the energy storage device 12 can be maintained within the range of the first threshold to the second threshold, improving the service life of the energy storage device 12.

[0056] Optionally, the power detection component can be set as a power detection chip integrated in the storage battery.

[0057] It can be understood that in addition to charging the energy storage device 12 by controlling the operation of the power generation device 11, in some embodiments, the power storage device 1 may further include a first contactor 13. The first contactor 13 can be a charging contactor. The first contactor 13 is connected to the control system 3. When the power detection component monitors that the power Q in the energy storage device 12 is insufficient, the control system 3 can synchronously control the first contactor 13 to close while controlling the wind turbine assembly 111 to complete grid connection, so as to effectively charge the energy storage device 12.

[0058] Please refer to Figure 2 , in some alternative embodiments, the lubrication device 2 includes more than two lubrication components 21. The more than two lubrication components 21 respectively correspond to multiple lubrication areas of the gearbox 240. The control system 3 is configured to supply power to at least some of the lubrication components 21 according to the power.

[0059] By respectively arranging the lubrication components 21 corresponding to multiple lubrication areas of the gearbox 240, for example, arranging the lubrication components 21 according to the primary and secondary order of the lubrication areas in the gearbox 240, the operation of the lubrication components 21 can be reasonably switched according to its own power. Thus, at least some areas of the gearbox 240 can be lubricated with limited power, improving the reliability of the gearbox 240 and extending the service life of the gearbox 240.

[0060] For example, three lubrication components 21 can be set, and the three lubrication components 21 are respectively defined as the first lubrication component 21a, the second lubrication component 21b, and the third lubrication component 21c. Correspondingly, the power has a first preset value Q1, a second preset value Q2, and a third preset value Q3. The first threshold can be equal to the first preset value Q1, and the second threshold can be equal to the third preset value Q3.

[0061] For the convenience of description, the following will take the first threshold as the first preset value Q1 and the second threshold as the third preset value Q3 as examples for illustration.

[0062] According to the power Q of the energy storage device 12 detected by the power detection component, at least part of the lubrication component 21 is controlled to be powered. Specifically, when the power Q of the energy storage device 12 satisfies Q2 > Q > Q1, the control system 3 can control the energy storage device 12 to supply power to the first lubrication component 21a, so as to lubricate the gearbox 240 through the first lubrication component 21a. When the power Q of the energy storage device 12 satisfies Q3 > Q ≥ Q2, the control system 3 can control the energy storage device 12 to supply power to the first lubrication component 21a and the second lubrication component 21b in sequence, so as to lubricate the gearbox 240 in sequence through the first lubrication component 21a and the second lubrication component 21b. When the power Q of the energy storage device 12 satisfies Q ≥ Q3, the control system 3 can control the energy storage device 12 to supply power to the first lubrication component 21a, the second lubrication component 21b, and the third lubrication component 21c in sequence, so as to start lubricating the gearbox 240 in sequence through the first lubrication component 21a, the second lubrication component 21b, and the third lubrication component 21c.

[0063] Optionally, the lubrication component 21 includes a lubrication pump motor 211 and a power distribution unit. The lubrication pump motor 211 is connected to the energy storage device 12 through the power distribution unit. The power distribution unit is a power control device that controls the lubrication pump motor 211. By distributing power to the lubrication pump motor 211, the lubrication pump motor 211 can be integrated into the gearbox 240 and is used to pump lubricating medium into the gearbox 240, and send the lubricating medium to each friction surface in the gearbox 240 at a certain pressure for lubrication, completing the lubrication operation of the gearbox 240.

[0064] Optionally, the power distribution unit can be set as an inverter 212. The inverter 212 performs DC power distribution on the lubrication pump motor 211 by changing the working power supply frequency. Alternatively, the power distribution unit can also adopt the mode of UPS (Uninterruptible Power Supply), and perform power distribution on the lubrication pump motor 211 in the power supply mode of an AC inverter 212.

[0065] Please refer to Figure 2 , in some optional embodiments, the lubrication device 2 further includes more than two contactors. The contactors are correspondingly arranged with the lubrication component 21. The lubrication component 21 is respectively connected to the energy storage device 12 through the contactors. The contactors are communicatively connected to the control system 3. The control system 3 is configured to respectively control the contactors to open according to the power, so as to supply power to the lubrication component 21 in a predetermined order.

[0066] For ease of understanding, the contactors within the lubrication device 2 are defined as the second contactors 213. Taking the lubrication device 2 including a first lubrication assembly 21a, a second lubrication assembly 21b, and a third lubrication assembly 21c as an example, the number of the second contactors 213 is also three, and they are arranged in one-to-one correspondence with the lubrication assemblies 21. By providing the second contactors 213, the control system 3 can control the closing of the second contactors 213 corresponding to the respective lubrication assemblies 21 to complete the sequential power supply to the respective lubrication assemblies 21.

[0067] Please refer to Figure 2 , in some alternative embodiments, the lubrication management module 10 further includes a first temperature control module 5 disposed in the energy storage device 12. The first temperature control module 5 includes a first temperature detection module 51 and a first thermal management module 52. The first temperature detection module 51 is connected to the control system 3. The first temperature detection module 51 is configured to detect the ambient temperature of the energy storage device 12. The control system 3 is configured to control the energy storage device 12 to supply power to the first thermal management module 52 according to the ambient temperature.

[0068] By making the lubrication management module 10 include the first temperature detection module 51 and the first thermal management module 52, the ambient temperature of the energy storage device 12 can be detected by the first temperature detection module 51, and when the ambient temperature exceeds the threshold, the first thermal management module 52 can be controlled to heat or cool the external environment of the energy storage device 12 to maintain the external environment temperature of the energy storage device 12 within a preset range, ensuring the normal operation of the energy storage device 12.

[0069] Optionally, the first temperature detection module 51 can be set as a temperature sensor. In a region with a relatively low temperature, the first thermal management module 52 can be set as a heating module, or, in a region with a relatively high temperature, the first thermal management module 52 can be set as a cooling module, or, the first thermal management module 52 can be integrated with both heating and cooling functions, so as to be able to heat or cool the external environment according to actual needs to meet the normal operation requirements of the energy storage device 12.

[0070] Optionally, the lubrication management module 10 further includes a third contactor 53. The first thermal management module 52 is connected to the energy storage device 12 through the third contactor 53. The third contactor 53 is communicatively connected to the control system 3. Taking the wind power generation system being disposed in a region with a relatively low temperature as an example, when the first temperature detection module 51 detects that the ambient temperature is lower than the threshold, the control system 3 can control the third contactor 53 to open, and the energy storage device 12 supplies power to the first thermal management module 52, so that the external environment where the energy storage device 12 is located can be heated through the first thermal management module 52. When it is heated to the point where the first temperature detection module 51 detects that the ambient temperature reaches the preset range, the control system 3 can control the third contactor 53 to disconnect the heating.

[0071] In some optional embodiments, the lubrication management module 10 further includes a second temperature control module 6 disposed in the gearbox 240. The second temperature control module 6 includes a second temperature detection module 61 and a second thermal management module 62. The second temperature detection module 61 is connected to the control system 3. The second temperature detection module 61 is configured to detect the temperature of the lubricating medium injected into the gearbox 240. The control system 3 is configured to control the energy storage device 12 to supply power to the second thermal management module 62 according to the temperature of the lubricating medium.

[0072] Similarly, the second temperature detection module 61 and the second thermal management module 62 can also be integrated in the gearbox 240. The temperature of the lubricating medium injected into the gearbox 240 can be detected by the second temperature detection module 61. When the temperature of the lubricating medium exceeds the threshold, the second thermal management module 62 is controlled to heat or cool the lubricating medium to maintain the temperature of the lubricating medium within a preset range, ensuring the normal lubrication of the gearbox 240.

[0073] Optionally, the second temperature detection module 61 can be set as a temperature sensor. In a region with a relatively low temperature, the second thermal management module 62 can be set as a heating module. Or, in a region with a relatively high temperature, the second thermal management module 62 can be set as a refrigeration module. Or, the second thermal management module 62 can be integrated with both heating and refrigeration functions, so as to be able to heat or cool the lubricating medium according to actual needs to meet the normal lubrication requirements of the gearbox 240.

[0074] Optionally, the lubrication management module 10 further includes a fourth contactor 63. The second thermal management module 62 is connected to the energy storage device 12 through the fourth contactor 63. The fourth contactor 63 is communicatively connected to the control system 3. Taking the wind power generation system being set in a region with a relatively low temperature as an example, when the second temperature detection module 61 detects that the temperature of the lubricating medium is lower than the threshold, the fourth contactor 63 can be controlled to open through the control system 3, and the energy storage device 12 supplies power to the second thermal management module 62, so that the lubricating medium can be heated through the second thermal management module 62. When the temperature of the lubricating medium reaches the preset range detected by the second temperature detection module 61, the heating can be controlled to stop by disconnecting the fourth contactor 63 through the control system 3.

[0075] In some optional embodiments, the control system 3 includes a timing module. The timing module is configured to calculate the idle time of the lubrication device 2 and control the energy storage device 12 to supply power to the lubrication device 2 when the idle time reaches a preset time.

[0076] By setting the timing module, when the idle time of the lubrication device 2 reaches the preset time, the energy storage device 12 can be automatically controlled to supply power to the lubrication device 2, so as to achieve regular lubrication of the gearbox 240. There is no need for staff to monitor, and it can operate in an unattended state, reducing costs.

[0077] Optionally, the timing module can be integrated into the control system 3, which can be set as an intelligent controller. The control system 3 is a computer control unit built into the electronic device, with a micro-control unit or a digital signal processor chip as the core component, and is used to receive remote operations and perform remote control of intelligent electronic devices.

[0078] In some optional embodiments, the lubrication management module 10 further includes an Internet of Things module 7 and a remote client 8. The energy storage device 12 supplies power to the Internet of Things module 7, and the control system 3 is communicatively connected to the remote client 8 through the Internet of Things module 7 to perform information interaction between the control system 3 and the remote client 8.

[0079] By communicatively connecting the control system 3 to the remote client 8 through the Internet of Things module 7, data can be uploaded and remotely controlled in real time, so as to monitor the status of the lubrication management module 10 through the remote client 8 and achieve effective remote manual or automatic control.

[0080] Optionally, the lubrication management module 10 further includes a DC voltage regulating power supply 9. The energy storage device 12 is connected to the control system 3 and the Internet of Things module 7 through the DC voltage regulating power supply 9. The DC voltage regulating module is used to adjust the total output voltage of the energy storage device 12 to a power supply that meets the operating requirements of the control system 3 and the Internet of Things module 7, so as to meet the power supply requirements for the control system 3 and the Internet of Things module 7.

[0081] Optionally, the remote client 8 can be set as a remote mobile phone application and / or a terminal computer. The lubrication management module 10 further includes a communication network. The Internet of Things module 7 performs MODBUS communication with the control system 3 and communicates with the remote mobile phone application and / or the terminal computer through the communication network.

[0082] The following Figures 2 to 6 , illustrate the working principle of the lubrication management module 10 in the embodiments of the present application. The lubrication management module 10 includes an automatic mode and a manual mode.

[0083] The automatic mode includes an offline state, a standby state, and a lubrication state.

[0084] Please refer to Figures 2 to 5 , Figure 4 is a schematic diagram of the working mode of the lubrication management module 10 provided in some embodiments of the present application, Figure 5 is a schematic diagram of the charge and discharge control strategy of the lubrication management module 10 in the offline state of the automatic mode provided in some embodiments of the present application.

[0085] The offline state means that the lubrication management module 10 is not connected to the wind turbine generator 20. The lubrication management module 10 itself can realize the charge and discharge functions of the energy storage device 12 to ensure the life and performance of the energy storage device 12. The energy storage device 12 is equipped with a BMS (Battery Management System), which can control the charging current. In the offline state, the charge and discharge cycles of the energy storage device 12 can be realized to ensure the performance and life of the energy storage device 12. The overall control strategy is as follows:

[0086] The control system 3 performs self-check, and the self-check content includes the states of the discharge device and the energy storage device 12. After confirming that the states of the discharge device and the energy storage device 12 are free of faults or abnormalities, the next step is carried out.

[0087] The power of the energy storage device 12 is detected by the power detection component. When the detected power of the energy storage device 12 is lower than the first preset value Q1, the wind turbine assembly 111 is started, and it is detected whether the output terminal voltage is greater than 48V;

[0088] If the wind turbine assembly 111 works normally (without faults, output terminal voltage 48V), the control system 3 controls the first contactor 13 to close, and the energy storage device 12 is charged through the power conversion module 112 to ensure that the power of the energy storage device 12 is greater than the second preset value Q2.

[0089] The ambient temperature of the energy storage device 12 is detected by the first temperature detection module 51. When the ambient temperature of the energy storage device 12 is lower than the preset range, the control system 3 controls the third contactor 53 to close to heat the ambient temperature of the energy storage device 12. After the ambient temperature of the energy storage device 12 rises to the preset range, the control system 3 controls the third contactor 53 to disconnect and stop heating;

[0090] The power of the energy storage device 12 is detected by the power detection component. When the detected power of the energy storage device 12 is greater than the third preset value Q3, the control system 3 controls the first contactor 13 to disconnect and stops the wind turbine assembly 111 at the same time.

[0091] In the offline state, the lubrication management module 10 in the embodiment of the present application can control the power generation device 11 to perform automatic power backup through the control system 3 to control the power in the energy storage device 12 within a certain range, so as to ensure reliable power supply to the lubrication device 2 and improve the reliability of the lubrication management module 10.

[0092] Please refer to Figure 6 , Figure 6 which is a schematic diagram of the charge and discharge control strategy of the lubrication management module 10 in the standby and lubrication states in the automatic mode provided by some embodiments of the present application.

[0093] In the standby and lubrication states, i.e., when the lubrication management module 10 is connected to the wind turbine generator 20 and ready for lubrication, the lubrication management module 10 is in the timing and judgment stage. In the standby state, the lubrication management module 10 supplies power to the control system 3 and the Internet of Things module 7 by itself. During the system standby period, the control system 3 calculates the idle time and accesses the second temperature detection module 61 to monitor the lubricant temperature. The communication network establishes remote communication with the remote client 8 for data transmission back. Information interaction is established among the control system 3, the Internet of Things module 7, and the remote client 8 through MODBUS communication. When the idle time reaches the preset time, the lubrication management module 10 is awakened to enter the lubrication state for lubricating the gearbox 240. After the power of the energy storage device 12 is greater than the third preset value Q3 in this lubrication state, it can supply power to the second heat management module 62 for heating.

[0094] After the idle time reaches the preset time, the power of the energy storage device 12 is detected by the power detection component, and each lubrication component 21 is controlled to act in a selective order. The lubrication time can be set in advance, for example, the lubrication time is set to 10 minutes.

[0095] The overall control strategy is as follows:

[0096] The control system 3 performs self-check, and the self-check content includes the states of the discharge device and the energy storage device 12. After confirming that the states of the discharge device and the energy storage device 12 are free of faults or abnormalities, the next step is carried out.

[0097] Execute the charge and discharge control strategy of the lubrication management module 10 in the offline state;

[0098] The communication network establishes remote communication with the remote client 8 for data and information interaction;

[0099] The control system 3 calculates the idle time. According to the set preset time, for example, with an interval period of working once every 15 days, the lubricant temperature is collected by the second temperature detection module 61 in the standby state. When the lubricant temperature is lower than the preset range, the control system 3 controls the fourth contactor 63 to close to heat the lubricant temperature. After the lubricant temperature rises to the preset range, the control system 3 controls the fourth contactor 63 to disconnect and stop heating;

[0100] When the control system 3 calculates that the idle time reaches the preset time, the Internet of Things module 7 completes information confirmation and push. After the remote client 8 receives the push information, it makes a confirmation. If confirmed, the control system 3 immediately executes the lubrication control strategy, and the lubrication management module 10 switches to the lubrication state. If not confirmed, the control system 3 delays for 10 minutes to execute the lubrication control strategy;

[0101] Under the lubricated state, the power of the energy storage device 12 is detected by the power detection component. According to the power of the energy storage device 12, the second contactors 213 corresponding to the respective lubrication components 21 are sequentially started to execute the lubrication control strategy. Specifically:

[0102] When the power of the energy storage device 12 satisfies Q2 > Q > Q1, the control system 3 controls the second contactor 213 corresponding to the first lubrication component 21a to start. The first lubrication component 21a is powered on, and the control system 3 controls the first lubrication component 21a to perform the lubrication operation for 10 minutes. During the lubrication operation, the power Q of the energy storage device 12 is monitored in real time;

[0103] When the power of the energy storage device 12 satisfies Q3 > Q ≥ Q2, the control system 3 controls the second contactor 213 corresponding to the first lubrication component 21a to start. The first lubrication component 21a is powered on, and the control system 3 controls the first lubrication component 21a to perform the lubrication operation. After the first lubrication component 21a operates for 1 minute, the control system 3 controls the second contactor 213 corresponding to the second lubrication component 21b to start. The second lubrication component 21b is powered on, and the control system 3 controls the second lubrication component 21b to perform the lubrication operation. The lubrication time of each lubrication component 21 is 10 minutes. During the lubrication operation, the power Q of the energy storage device 12 is monitored in real time;

[0104] When the power of the energy storage device 12 satisfies Q ≥ Q3, the control system 3 controls the second contactor 213 corresponding to the first lubrication component 21a to start. The first lubrication component 21a is powered on, and the control system 3 controls the first lubrication component 21a to perform the lubrication operation. After the first lubrication component 21a operates for 1 minute, the control system 3 controls the second contactor 213 corresponding to the second lubrication component 21b to start. The second lubrication component 21b is powered on, and the control system 3 controls the second lubrication component 21b to perform the lubrication operation. After the second lubrication component 21b operates for 1 minute, the control system 3 controls the second contactor 213 corresponding to the third lubrication component 21c to start. The third lubrication component 21c is powered on, and the control system 3 controls the third lubrication component 21c to perform the lubrication operation. The lubrication time of each lubrication component 21 is 10 minutes. During the lubrication operation, the power Q of the energy storage device 12 is monitored in real time.

[0105] During the lubrication operation, the power Q of the energy storage device 12 is monitored in real time. If the power Q of the energy storage device 12 is lower than the first preset value Q1, control each lubrication component 21 to stop operating, and control the corresponding second contactor 213 to disconnect, and execute the charge and discharge control strategy of the lubrication management module 10 in the offline state.

[0106] In addition, during the lubrication operation or after the lubrication is completed, the state parameters of the control system 3 are fed back through the Internet of Things module 7, including: the states of the respective lubrication components 21, the state of the energy storage device 12, the states of the first temperature control module 5 and the second temperature control module 6, etc. The relevant state parameters are displayed and recorded through the remote client 8.

[0107] After the lubrication management module 10 in the embodiment of the present application is connected to the wind turbine generator 20, it can automatically switch the wind turbine generator 20 between the standby state and the lubrication state according to the idle time, so as to realize the regular lubrication of the gearbox 240 in the wind turbine generator 20. During the lubrication process, it can monitor the state parameters of each component in real time and give feedback, improving the reliability of lubrication.

[0108] Please refer to Figure 7 , Figure 7 which is a schematic diagram of the charge and discharge control strategy of the lubrication management module 10 in the manual mode provided by some embodiments of the present application.

[0109] The manual mode is to manually control the lubrication management module 10 through the remote mode according to the system state through the remote client 8. The overall control strategy is as follows:

[0110] The Internet of Things module 7 feeds back the state parameters in the control system 3 in real time through the communication network, including the states of the discharge device and the energy storage device 12. After confirming that the states of the discharge device and the energy storage device 12 are free of faults or abnormalities, and ensuring that the power of the energy storage device 12 satisfies Q > Q1;

[0111] When the power of the energy storage device 12 satisfies Q2 > Q > Q1, the remote client 8 issues an instruction to the Internet of Things module 7 through the communication network. After receiving the instruction, the Internet of Things module 7 issues it to the control system 3, and the control system 3 controls the second contactor 213 corresponding to the first lubrication component 21a to act, and remotely controls the action of the first lubrication component 21a, with a lubrication time of 10 minutes;

[0112] When the power of the energy storage device 12 satisfies Q3 > Q ≥ Q2, the remote client 8 issues an instruction to the Internet of Things module 7 through the communication network. After receiving the instruction, the Internet of Things module 7 issues it to the control system 3, and the control system 3 controls the second contactor 213 corresponding to the first lubrication component 21a to start. After the first lubrication component 21a acts for 1 minute, the control system 3 controls the second contactor 213 corresponding to the second lubrication component 21b to start, and the lubrication time of each lubrication component 21 is 10 minutes;

[0113] When the power of the energy storage device 12 satisfies Q≥Q3, the process client issues an instruction to the IoT module 7 through the communication network. After receiving the instruction, the IoT module 7 issues it to the control system 3. The control system 3 controls the second contactor 213 corresponding to the first lubrication component 21a to start. After the first lubrication component 21a operates for 1 minute, the control system 3 controls the second contactor 213 corresponding to the second lubrication component 21b to start. After the second lubrication component 21b operates for 1 minute, the control system 3 controls the second contactor 213 corresponding to the third lubrication component 21c to start. The lubrication time of each lubrication component 21 is 10 minutes;

[0114] During the lubrication operation or after the lubrication is completed, the state parameters of the control system 3 are fed back through the IoT module 7, including: the states of each lubrication component 21, the state of the energy storage device 12, the states of the first temperature control module 5 and the second temperature control module 6, etc. The relevant state parameters are displayed and recorded by the remote client 8.

[0115] The wind power generation system in the embodiment of the present application can control the lubrication management module 10 to switch between the automatic mode and the manual mode according to the usage requirements, so as to control the lubrication management module 10 in the remote state, realize the lubrication of the gearbox 240 in the wind power generation system, and be able to automatically lubricate the gearbox 240, reducing the failure risk of the gearbox 240.

[0116] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A wind power generation system, characterized in that: It comprises a wind turbine generator set (20) and a lubrication management module (10), wherein the lubrication management module (10) comprises: An electric storage device (1) comprises a power generation device (11) and an energy storage device (12), wherein the energy storage device (12) is connected to the power generation device (11), the power generation device (11) is configured to convert clean energy into electric energy, and the energy storage device (12) is configured to receive and store at least part of the electric energy; a lubricating device (2), electrically connected to the energy storage device (12), wherein the lubricating device (2) is at least partially integrated in a gear box (240) of the wind turbine generator set (20); A control system (3) is communicatively connected to the energy storage device (12), and the control system (3) is configured to control the energy storage device (12) to supply power to the lubrication device (2).

2. The wind power generation system according to claim 1, characterized in that: The number of the wind turbine generator sets (20) is more than two, the lubrication management module (10) comprises a plurality of lubrication devices (2), the plurality of lubrication devices (2) are respectively integrated in the gearbox (240) of at least part of the wind turbine generator sets (20), and the energy storage device (12) is configured to supply power to each of the lubrication devices (2).

3. The wind power generation system according to claim 1, characterized in that: The wind power generation system further comprises a carrying device (4), the power storage device (1) is at least partially arranged on the carrying device (4), and the carrying device (4) comprises at least one of a walking component and a floating platform.

4. The wind power generation system according to claim 1, characterized in that: The power generation device (11) comprises a wind wheel assembly (111) and a power conversion module (112); the wind wheel assembly (111) is configured to convert wind energy into electrical energy; the wind wheel assembly (111) is connected to the energy storage device (12) via the power conversion module (112); and the power conversion module (112) converts the electrical energy into a charging voltage for the energy storage device (12).

5. The wind power generation system according to claim 1, characterized in that: The lubrication management module (10) further comprises an electric quantity detection element, which is used to detect the electric quantity in the energy storage device (12); The lubrication device (2) comprises more than two lubrication components (21), the more than two lubrication components (21) respectively corresponding to a plurality of lubrication areas of the gear box (240), and the control system (3) is configured to supply power to at least part of the lubrication components (21) according to the amount of electricity.

6. The wind power generation system according to claim 5, characterized in that: The lubrication device (2) further comprises two or more contactors, the contactors being arranged corresponding to the lubrication components (21), the lubrication components (21) being connected to the energy storage devices (12) respectively via the contactors, the contactors being communicatively connected to the control system (3), and the control system (3) being configured to control the contactors to be opened respectively according to the amount of electricity, so as to supply power to the lubrication components (21) in a predetermined sequence.

7. The wind power generation system according to claim 1, characterized in that: The lubrication management module (10) further comprises a first temperature detection module (51) and a first thermal management module (52) arranged on the energy storage device (12); the first temperature detection module (51) is connected to the control system (3); The first temperature detection module (51) is used to detect the ambient temperature of the energy storage device (12), and the control system (3) is configured to control the energy storage device (12) to supply power to the first thermal management module (52) according to the ambient temperature.

8. The wind power generation system according to claim 1, characterized in that: The lubrication management module (10) further comprises a second temperature detection module (61) and a second thermal management module (62) arranged on the gear box (240); the second temperature detection module (61) is connected to the control system (3); The second temperature detection module (61) is used to detect the temperature of the lubricating medium injected into the gear box (240), and the control system (3) is configured to control the energy storage device (12) to supply power to the second thermal management module (62) according to the temperature of the lubricating medium.

9. The wind power generation system according to claim 1, characterized in that: The control system (3) comprises a timing module, which is used to calculate the idle time of the lubricating device (2) and control the energy storage device (12) to supply power to the lubricating device (2) when the idle time reaches a preset time.

10. The wind power generation system according to claim 1, characterized in that: The lubrication management module (10) further comprises an Internet of Things module (7) and a remote client (8), the energy storage device (12) supplies power to the Internet of Things module (7), and the control system (3) is connected to the remote client (8) via the Internet of Things module (7) to perform information exchange between the control system (3) and the remote client (8).

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