Wind turbine start-up method and device, storage medium and electronic equipment

Abstract

The present application provides a method and device for starting a wind turbine, a storage medium and an electronic device. When the wind turbine is in an area blocked by mountains and the average wind speed is not greater than a preset wind speed threshold, the blades are controlled to be in a fully open state, and the average blade root load of each blade of the wind turbine within a preset second time period is collected through various load collection devices; load collection devices are pre-installed on the blade roots of the windward and leeward sides of each blade; if the average blade root load of any blade is not less than the starting load, the wind turbine is controlled to start. The present application scheme, by studying the blade stress conditions of the wind turbine under the influence of wind speed, proposes the idea that the blade root load can be used as a basis for starting, so that when the average blade root load of any blade within the preset second time period is not less than the starting load, the wind turbine is controlled to start, overcoming the defects of the prior art, thereby improving the power generation and operating efficiency of the wind turbine.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a method and device for starting a wind turbine generator set, a storage medium and an electronic device. Background Art

[0002] In recent years, due to the demand for the development of new energy, wind power generation technology has been vigorously promoted. Wind power generation refers to the conversion of wind kinetic energy into electrical energy.

[0003] In the prior art, the wind turbines in mountain wind farms use the wind speed measured by the nacelle anemometer as the start signal. Generally, when the average wind speed exceeds 3m / s over 10 minutes, the wind turbines can be controlled to start. However, due to factors such as terrain and construction conditions, some wind turbines in mountain wind farms are blocked by the higher altitude mountains in front of them. In this case, since the anemometer is installed on the top of the nacelle and is blocked by the mountains, the actual wind speed cannot be effectively measured. As a result, the actual wind speed meets the start condition (that is, the actual wind speed reaches the preset value), but the wind cannot be started because the measured wind speed is low, which greatly reduces the power generation of the wind turbine, thereby affecting the operating efficiency of the wind turbine. Summary of the invention

[0004] Through research, the inventors found that under the influence of wind speed, the blades of the wind turbine are subjected to stress and the load will be transmitted to the blade root. Therefore, the blade root load can be used as a basis for starting the machine. Based on this, the present application provides a wind turbine starting method and device, storage medium and electronic equipment, the purpose of which is to effectively reduce the power generation loss of the wind turbine caused by the obstruction of wind by mountains, so as to improve the operating efficiency of the wind turbine.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A method for starting a wind turbine generator set, comprising:

[0007] In the case where it is monitored that the wind turbine generator set is in a leeward area, determining whether the wind turbine generator set is currently in a shutdown state; the leeward area is an area blocked by mountains;

[0008] If the wind turbine generator set is currently in a shutdown state, obtaining an average wind speed of the wind turbine generator set within a preset first time period;

[0009] If the average wind speed is not greater than the preset wind speed threshold, the blades of the wind turbine set are controlled to be in a fully open state, and the average blade root load of each blade of the wind turbine set within a preset second time period is collected through various load collection devices; wherein load collection devices are pre-installed on the blade roots of the windward side and the leeward side of each blade of the wind turbine set respectively;

[0010] If the average blade root load of any blade within the preset second time period is not less than the preset starting load, the wind turbine set is controlled to start.

[0011] The above method may optionally further include:

[0012] If the wind turbine generator set is not currently in a shutdown state, then through various load devices, it is determined in real time whether the average blade root load of each blade of the wind turbine generator set within a preset second time period is less than a preset shutdown load;

[0013] If the average blade root load of each blade of the wind turbine generator set within the preset second time period is not less than the preset shutdown load, controlling the wind turbine generator set to shut down;

[0014] If the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset shutdown load, then when the average blade root load of each blade of the wind turbine set within the preset second time period is not less than the preset alarm load, a preset pitch change action is performed to reduce the blade root load; wherein, the alarm load is less than the shutdown load.

[0015] The above method, optionally, after executing the preset pitch changing action, further includes:

[0016] When it is detected that the angle of attack of each blade of the wind turbine generator set is less than a preset angle threshold, the average blade root load of each blade of the wind turbine generator set within a preset third time period is collected through various load collection devices;

[0017] If the average blade root load of each blade of the wind turbine generator set within a preset third time period is less than the alarm load, the pitch changing action is stopped.

[0018] The above method may optionally further include:

[0019] If the average wind speed is greater than a preset wind speed threshold, the wind turbine generator set is controlled to start.

[0020] The above method may optionally further include:

[0021] If the average blade root loads of all blades within the preset second time period are less than the preset startup load, the process returns to the step of obtaining the average wind speed of the wind turbine generator set within the preset first time period.

[0022] In the above method, optionally, the monitoring that the wind turbine generator set is in a leeward area includes:

[0023] Real-time monitoring of the nacelle position of wind turbines;

[0024] When it is monitored that the nacelle position of the wind turbine generator set is in the leeward area, it is determined that the wind turbine generator set is monitored to be in the leeward area.

[0025] A wind turbine starter device, comprising:

[0026] The first judgment unit is used to judge whether the wind turbine generator set is currently in a shutdown state when it is detected that the wind turbine generator set is in a leeward area; the leeward area is an area blocked by mountains;

[0027] an acquisition unit, configured to acquire an average wind speed of the wind turbine generator set within a preset first time period if the wind turbine generator set is currently in a shutdown state;

[0028] A first collection unit is used for controlling the blades of the wind turbine to be in a fully opened state if the average wind speed is not greater than a preset wind speed threshold, and collecting the average blade root load of each blade of the wind turbine within a preset second time period through various load collection devices; wherein load collection devices are pre-installed on the blade roots of the windward side and the leeward side of each blade of the wind turbine respectively;

[0029] The first control unit is used to control the wind turbine to start if the average blade root load of any blade within a preset second time period is not less than a preset starting load.

[0030] The above device may optionally further include:

[0031] The second judgment unit is used to judge in real time through various load devices whether the average blade root load of each blade of the wind turbine set within a preset second time period is less than a preset shutdown load if the wind turbine set is not currently in a shutdown state;

[0032] a second control unit, configured to control the wind turbine generator set to shut down if the average blade root load of each blade of the wind turbine generator set within a preset second time period is not less than a preset shutdown load;

[0033] An execution unit is used to execute a preset pitch change action to reduce the blade root load of the blade if the average blade root load of each blade of the wind turbine set within a preset second time period is less than a preset shutdown load, and when the average blade root load of each blade of the wind turbine set within the preset second time period is not less than a preset alarm load; wherein the alarm load is less than the shutdown load.

[0034] A storage medium stores an instruction set, wherein the instruction set, when executed by a processor, implements the wind turbine start-up method as described above.

[0035] An electronic device, comprising:

[0036] A memory for storing at least one set of instructions;

[0037] The processor is used to execute the instruction set stored in the memory, and implement the wind turbine start-up method as described above by executing the instruction set.

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

[0039] The present application provides a method and device for starting a wind turbine, a storage medium and an electronic device. When the wind turbine is in an area blocked by mountains, if the average wind speed of the wind turbine within a preset first time period is not greater than a preset wind speed threshold, the blades of the wind turbine are controlled to be in a fully open state, and the average blade root load of each blade of the wind turbine within a preset second time period is collected through various load collection devices; wherein, load collection devices are pre-installed on the blade roots of the windward side and the leeward side of each blade of the wind turbine respectively; if the average blade root load of any blade within the preset second time period is not less than the preset starting load, the wind turbine is controlled to start. It can be seen that the present application scheme, by studying the force condition of the blades of the wind turbine under the influence of wind speed, proposes the idea that the blade root load can be used as the basis for starting, so that when the average blade root load of any blade within the preset second time period is not less than the preset starting load, the wind turbine is controlled to start, which overcomes the defects of the prior art and improves the power generation and operation efficiency of the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0041] Figure 1 A schematic diagram of the impact of mountain barriers on wind turbines provided in this application;

[0042] Figure 2 A method flow chart of a wind turbine startup method provided in this application;

[0043] Figure 3 A flow chart of another method for starting a wind turbine generator set provided in the present application;

[0044] Figure 4 A flow chart of another method for starting a wind turbine generator set provided in the present application;

[0045] Figure 5 A schematic diagram of the structure of a wind turbine start-up system provided in this application;

[0046] Figure 6 A schematic diagram of the structure of a wind turbine starter provided in this application;

[0047] Figure 7 A schematic diagram of the structure of an electronic device provided in this application. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0049] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0050] It should be noted that the concepts such as "first" and "second" mentioned in the present application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0051] It should be noted that the modifications of "one" and "plurality" mentioned in the disclosure of this application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0052] The present application can be used in many general or special computing device environments or configurations, such as personal computers, server computers, handheld or portable devices, tablet devices, multi-processor devices, distributed computing environments including any of the above devices or equipment, etc.

[0053] See also Figure 1 , Figure 1 The figure shows a schematic diagram of the impact of mountain obstruction on wind turbines. The main reasons for the impact of mountain obstruction on wind turbines are: (1) the mountains form a physical barrier to the wind, making it impossible for the blades to absorb wind energy normally; (2) since the anemometer is installed on the top of the nacelle, it is blocked by the mountains and cannot effectively measure the actual wind speed, that is, the measured wind speed is lower.

[0054] In the prior art, since the anemometer cannot effectively measure the actual wind speed, there may be a situation where the actual wind speed meets the start-up conditions (i.e., the actual wind speed reaches the preset value), but the wind speed measured by the anemometer is too low and the machine cannot be started, which greatly reduces the power generation of the wind turbine and further affects the economic benefits.

[0055] However, in reality, with the cabin as the dividing line, there is a big difference in the wind speed between the upper and lower parts of the impeller. The wind speed in the upper part can reach the starting conditions, but the wind speed in the lower part is lower. In this case, as long as the actual wind speed reaches the preset value, the wind turbine can start normally.

[0056] Through research, the inventors found that under the influence of wind speed, the blades of the wind turbine are subjected to stress and the load will be transmitted to the blade root. Therefore, the blade root load can be used as a basis for starting the machine. Based on this, the present application provides a wind turbine starting method and device, storage medium and electronic equipment, the purpose of which is to effectively reduce the power generation loss of the wind turbine caused by the obstruction of wind by mountains, so as to improve the operating efficiency of the wind turbine.

[0057] The embodiment of the present application provides a method for starting a wind turbine generator set. The flow chart of the method for starting a wind turbine generator set is as follows: Figure 2 As shown, specifically including:

[0058] S201. When it is detected that the wind turbine generator set is in a leeward area, determine whether the wind turbine generator set is currently in a shutdown state. If so, execute S202; if not, execute S203.

[0059] In this embodiment, when it is monitored that the wind turbine generator set is in the leeward area, it is determined whether the wind turbine generator set is currently in a shutdown state, that is, it is determined whether the wind turbine generator set is currently shut down.

[0060] Among them, the leeward area is the area blocked by mountains, and the wind turbine is a wind turbine generator set.

[0061] For details, see Figure 3 , the process of monitoring the wind turbine in the leeward area includes the following steps:

[0062] S301. Monitor the position of the wind turbine cabin in real time.

[0063] In this embodiment, the position of the nacelle of the wind turbine generator set is monitored in real time. Specifically, the position of the nacelle of the wind turbine generator set is monitored in real time by a nacelle position acquisition device.

[0064] S302: When it is detected that the nacelle of the wind turbine generator set is in the leeward area, it is determined that the wind turbine generator set is in the leeward area.

[0065] In this embodiment, when it is monitored that the nacelle of the wind turbine generator set is located in the leeward area, it is determined that the wind turbine generator set is monitored to be in the leeward area.

[0066] That is to say, the wind turbine set being in the leeward area actually means that the nacelle of the wind turbine set is in the leeward area.

[0067] S202: Obtain an average wind speed of the wind turbine generator system within a preset first time period.

[0068] In this embodiment, if the wind turbine is currently in shutdown state, the average wind speed of the wind turbine within a preset first time period is obtained. Preferably, the first time period is 10 minutes, that is, the average wind speed of the wind turbine within 10 minutes is obtained.

[0069] Specifically, the wind speed of the wind turbine generator set is obtained in real time through an anemometer installed on the top of the nacelle, and based on the wind speed obtained in real time, the average wind speed within a preset first time period is calculated.

[0070] S203, through each load device, determine in real time whether the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset shutdown load, if not, execute S204, if yes, execute S205.

[0071] In this embodiment, due to the obstruction of the mountains, the blades will be subjected to unbalanced forces. When the wind speed reaches a certain level, a damaging unbalanced torque will be generated. In addition, the rotation of the blades will cause periodic damage. Therefore, two levels of load warning are set, including an alarm load and a shutdown load. Among them, the shutdown load is greater than the alarm load.

[0072] In this embodiment, preferably, the stop load L_stop=08*L_limit, wherein L_limit is a preset blade root load, which is a manually set value and can be adjusted according to demand.

[0073] In this embodiment, if the wind turbine set is not currently in a shutdown state, each load device is used to determine in real time whether the average blade root load of each blade of the wind turbine set within a preset second time period is less than a preset shutdown load, wherein load collection devices are pre-installed on the blade roots on the windward side and the leeward side of each blade of the wind turbine set, respectively. The load collection device installed on the blade root on the windward side of the blade is used to collect the load on the windward side when the blade is in a fully open state, and the load collection device installed on the blade root on the leeward side of the blade is used to collect the load on the leeward side when the blade is in a fully open state.

[0074] Preferably, the second duration is preset to minutes.

[0075] In this embodiment, the blade root load is collected in real time by a load collection device installed on the blade root, wherein the blade root load is the load at the blade root.

[0076] In this embodiment, for each blade included in the wind turbine, the average load within the preset second time period is calculated based on the real-time collection of the blade root load of the blade. For example, the wind turbine includes 3 blades, namely blade A, blade B and blade C. For blade A, the sampling period of the load collection device is 1s, so 180 points are collected in 3 minutes. The average of these 180 points is the average load within these 3 minutes. Similarly, the process of obtaining the average load of blades B and C is similar to the process of obtaining the average load of blade A, which will not be repeated here.

[0077] S204, controlling the wind turbine to shut down.

[0078] In this embodiment, if the average blade root load of each blade of the wind turbine set within the preset second time period is not less than the preset shutdown load, that is, if the average blade root load of any blade within the preset second time period is not less than the shutdown load, it means that the damaging unbalanced torque is too large, and the wind turbine set is controlled to shut down to reduce damage to the wind turbine set.

[0079] S205, determining whether the average blade root load of each blade of the wind turbine generator set within the preset second time period is less than the preset alarm load, if so, returning to execute S203, if not, executing S206.

[0080] In this embodiment, if the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset shutdown load, it is further determined whether the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset alarm load. The alarm load is less than the shutdown load.

[0081] In this embodiment, preferably, the alarm load L_alarm=06*L_limit, wherein L_limit is a preset blade root load, which is a manually set value and can be adjusted according to demand.

[0082] In this embodiment, if the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset alarm load, it means that the unbalanced torque at this time has little effect on the wind turbine set, and the process returns to step S203 to continue monitoring the blade root load of each blade of the wind turbine set.

[0083] In this embodiment, if the average blade root load of each blade of the wind turbine set within the preset second time period is not less than the preset alarm load, that is, the average blade root load of any blade is not less than the alarm load, it means that the unbalanced torque at this time has caused great damage to the wind turbine set, and step S206 is executed.

[0084] It should be noted that, when the average load of the blades within the preset second time period is not less than the shutdown load, the damage of the unbalanced torque to the wind turbine generator set is greater than that when the average load is not less than the alarm load.

[0085] S206: Execute a preset pitch change action to reduce the blade root load of the blade.

[0086] In this embodiment, if the average blade root load of each blade of the wind turbine set within the preset second time period is not less than the preset alarm load, that is, if the average blade root load of any blade is not less than the alarm load, it means that the unbalanced torque at this time has caused great damage to the wind turbine set, and the preset pitch change action is performed on the blades of the wind turbine set to reduce the blade root load, thereby reducing the damage to the wind turbine set.

[0087] In the method provided in the embodiment of the present application, while improving the power generation, the characteristics of the special terrain are taken into consideration, and the blade root load is monitored to protect the safe and stable operation of the unit in real time to prevent damage to the unit caused by excessive load imbalance.

[0088] S207, determine whether the average wind speed is greater than a preset wind speed threshold, if so, execute S208, if not, execute S209.

[0089] In this embodiment, it is determined whether the average wind speed is greater than a preset wind speed threshold. Preferably, the preset wind speed threshold is 3 m / s.

[0090] S208, controlling the wind turbine to start.

[0091] In this embodiment, if the average wind speed is greater than the preset wind speed threshold, it means that the current actual wind speed meets the start-up condition, and the wind turbine is controlled to start.

[0092] In this embodiment, if the average wind speed is not greater than the preset wind speed threshold, when the average blade root load of each blade of the wind turbine set within the preset second time period is not less than the preset starting load, that is, when the average blade root load of any blade within the preset second time period is not less than the preset starting load, it means that the current actual wind speed meets the startup conditions, and the wind turbine set is controlled to start.

[0093] Optionally, after the wind turbine is started, the root loads of the three blades may continue to be monitored in real time to prevent damage to the turbine due to unbalanced loads above and below the impeller caused by the obstruction of mountains when the wind speed is high.

[0094] S209, controlling the blades of the wind turbine generator set to be in a fully opened state, and collecting the average blade root load of each blade of the wind turbine generator set within a preset second time period through various load collection devices.

[0095] In this embodiment, if the average wind speed is not greater than the preset wind speed threshold, the blades of the wind turbine are controlled to be in a fully open state. This is because only when the blades are in a fully open state can the blades be in a state of absorbing wind energy, so that the load can be measured at the blade root.

[0096] In this embodiment, when the blades of the wind turbine are in a fully opened state, the average blade root load of each blade of the wind turbine within a preset second time period is collected through various load collection devices. Specifically, the average blade root load of each blade of the wind turbine within the preset second time period is collected through the load collection device installed at the blade root of each blade of the wind turbine.

[0097] For the specific process of collecting the average blade root load of each blade of the wind turbine generator set within the preset second time period by means of the load collection device installed at the blade root of each blade of the wind turbine generator set, please refer to the above step S203 and will not be repeated here.

[0098] S210, determining whether the average blade root load of each blade of the wind turbine generator set within the preset second time period is less than the preset startup load, if so, returning to execute S202, if not, executing S208.

[0099] In this embodiment, it is determined whether the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset startup load. Preferably, the startup load L_in=1.3*L1, where L1 is the blade root load of the wind turbine set when it is running in the cut-in wind speed condition.

[0100] Among them, if the average blade root load of each blade of the wind turbine set within the preset second time period is not less than the preset startup load, that is, if the average blade root load of any blade within the preset second time period is not less than the preset startup load, it means that the current actual wind speed meets the startup conditions, and step S208 is executed.

[0101] If the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset startup load, it means that the current wind speed does not meet the startup condition, and the process returns to step S202.

[0102] The wind turbine start-up method provided in the embodiment of the present application, when the wind turbine is in an area blocked by mountains, if the average wind speed of the wind turbine within a preset first time period is not greater than the preset wind speed threshold, then the average blade root load of each blade of the wind turbine within a preset second time period is collected through various load collection devices; wherein, load collection devices are pre-installed on the blade roots of the windward side and the leeward side of each blade of the wind turbine respectively; if the average blade root load of any blade within the preset second time period is not less than the preset start-up load, the wind turbine is controlled to start. It can be seen that the present application scheme, by studying the force condition of the blades of the wind turbine under the influence of wind speed, proposes the idea that the blade root load can be used as the basis for starting, so that when the average blade root load of any blade within the preset second time period is not less than the preset start-up load, the wind turbine is controlled to start, which overcomes the defects of the prior art and improves the power generation and operation efficiency of the wind turbine. In addition, while increasing power generation, taking into account the characteristics of the special terrain, the blade root load is monitored to protect the safe and stable operation of the unit in real time and prevent damage to the unit caused by excessive load imbalance.

[0103] See also Figure 4 The wind turbine startup method provided in the above embodiment of the present application may further include the following steps after step S206:

[0104] S401. When it is detected that the angle of attack of each blade of the wind turbine generator set is less than a preset angle threshold, an average blade root load of each blade of the wind turbine generator set within a preset third time period is collected through various load collection devices.

[0105] In this embodiment, during the process of executing the pitch change action, it is detected in real time whether the angle of attack of each blade of the wind turbine is less than a preset angle threshold.

[0106] In this embodiment, when it is detected that the angle of attack of each blade of the wind turbine generator set is less than a preset angle threshold, the average blade root load of each blade of the wind turbine generator set within a preset third time period is collected through various load collection devices.

[0107] Preferably, the preset third duration may be 1 minute.

[0108] It should be noted that the preset third time length is shorter than the preset second time length to ensure that the pitch change action is adjusted as soon as possible and to prevent over-adjustment.

[0109] It should be noted that the specific implementation process of collecting the average blade root load of each blade of the wind turbine generator set within the preset third time period through various load collection devices is shown in step S203, which will not be repeated here.

[0110] S402, determining whether the average blade root load of each blade of the wind turbine generator set within a preset third time period is less than the alarm load, if so, executing S403, if not, returning to executing S401.

[0111] In this embodiment, it is determined whether the average blade root load of each blade of the wind turbine generator set within a preset third time period is less than the alarm load.

[0112] If the average blade root load of each blade of the wind turbine generator set within the preset third time period is less than the alarm load, it means that the pitch change action has been adjusted in place and no further adjustment is required, and step S403 is executed.

[0113] Among them, if the average blade root load of each blade of the wind turbine set within the preset third time period is not less than the alarm load, that is, there is a situation where the average blade root load of the blade within the preset third time period is not less than the alarm load, then it means that the pitch change action has not been adjusted in place, and the pitch change action continues to be executed, and returns to step S401.

[0114] S403: Stop executing the pitch changing action.

[0115] In this embodiment, if the average blade root load of each blade of the wind turbine generator set within the preset third time period is less than the alarm load, it means that the pitch change action has been adjusted to the right position and no further adjustment is required, and the pitch change action is stopped.

[0116] The wind turbine starting method provided in the embodiment of the present application, after executing the pitch changing action, when it is detected that the angle of attack of each blade of the wind turbine is less than a preset angle threshold, collects the average blade root load of each blade of the wind turbine within a preset third time period through various load collection devices; if the average blade root load of each blade of the wind turbine within the preset third time period is less than the alarm load, the pitch changing action is stopped to prevent excessive adjustment.

[0117] See also Figure 5 The embodiment of the present application also provides a wind turbine start-up system, including:

[0118] Wind speed acquisition module, blade root load acquisition module, cabin position recording module, data collector, microprocessor and unit main controller.

[0119] Among them, the wind speed acquisition module, the blade root load acquisition module and the cabin position recording module are respectively connected to the data collector; the data collector is connected to the microprocessor and the unit main controller.

[0120] The wind speed collection module is used to collect the wind speed of the wind turbine.

[0121] The blade root load collection module is used to collect the blade root load of each blade of the wind turbine.

[0122] The cabin position recording module is used to detect the cabin position of the wind turbine.

[0123] The data collector is used to obtain the wind speed of the wind turbine set sent by the wind speed collection module, the blade root load of each blade of the wind turbine set sent by the blade root load collection module and the cabin position of the wind turbine set sent by the cabin position recording module, and transmit the obtained information to the microprocessor.

[0124] The microprocessor is used to analyze and judge the data of the data collector, and transmit the judgment result to the main controller of the unit. Specifically, when it is monitored that the wind turbine unit is in the leeward area, it is judged whether the wind turbine unit is currently in the shutdown state; if the wind turbine unit is currently in the shutdown state, the average wind speed of the wind turbine unit within a preset first time period is obtained; if the average wind speed is not greater than the preset wind speed threshold, the blades of the wind turbine unit are controlled to be in a fully open state, and the average blade root load of each blade of the wind turbine unit within a preset second time period is collected through various load collection devices; if the average blade root load of any blade within the preset second time period is not less than the preset startup load, or the average wind speed is greater than the preset wind speed threshold, a startup command is sent to the main controller of the unit;

[0125] If the wind turbine set is not currently in the shutdown state, it is determined in real time through various load devices whether the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset shutdown load; if the average blade root load of each blade of the wind turbine set within the preset second time period is not less than the preset shutdown load, a shutdown command is sent to the main controller of the set; if the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset shutdown load, then when the average blade root load of each blade of the wind turbine set within the preset second time period is not less than the preset alarm load, an execution pitch change action command is sent to the main controller of the set.

[0126] The main controller of the unit is used to forward the instructions sent by the microprocessor to the wind turbine unit for corresponding processing.

[0127] It should be noted that although the operations are depicted in a particular order, this should not be understood as requiring that the operations be performed in the particular order shown or in a sequential order. In certain circumstances, multitasking and parallel processing may be advantageous.

[0128] It should be understood that the various steps described in the method embodiments disclosed in the present application can be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0129] and Figure 1Corresponding to the method described above, the embodiment of the present application further provides a wind turbine start-up device for Figure 1 The specific implementation of the method is shown in the following diagram: Figure 6 As shown, specifically including:

[0130] The first judgment unit 601 is used to judge whether the wind turbine generator set is currently in a shutdown state when it is detected that the wind turbine generator set is in a leeward area; the leeward area is an area blocked by mountains;

[0131] An acquisition unit 602 is configured to acquire an average wind speed of the wind turbine generator set within a preset first time period if the wind turbine generator set is currently in a shutdown state;

[0132] The first collection unit 603 is used to control the blades of the wind turbine to be in a fully opened state if the average wind speed is not greater than a preset wind speed threshold, and collect the average blade root load of each blade of the wind turbine within a preset second time period through various load collection devices; wherein load collection devices are pre-installed on the blade roots of the windward side and the leeward side of each blade of the wind turbine respectively;

[0133] The first control unit 604 is configured to control the wind turbine to start if the average blade root load of any blade within a preset second time period is not less than a preset starting load.

[0134] In the wind turbine starting device provided in the embodiment of the present application, by studying the stress conditions of the wind turbine blades under the influence of wind speed, the idea that the blade root load can be used as the basis for starting is proposed, so that when the average blade root load of any blade within the preset second time period is not less than the preset starting load, the wind turbine is controlled to start, thereby overcoming the defects of the prior art and improving the power generation and operating efficiency of the wind turbine.

[0135] In one embodiment of the present application, based on the above solution, it can also be configured as follows:

[0136] The second judgment unit is used to judge in real time through various load devices whether the average blade root load of each blade of the wind turbine set within a preset second time period is less than a preset shutdown load if the wind turbine set is not currently in a shutdown state;

[0137] a second control unit, configured to control the wind turbine generator set to shut down if the average blade root load of each blade of the wind turbine generator set within a preset second time period is not less than a preset shutdown load;

[0138] An execution unit is used to execute a preset pitch change action to reduce the blade root load of the blade if the average blade root load of each blade of the wind turbine set within a preset second time period is less than a preset shutdown load, and when the average blade root load of each blade of the wind turbine set within the preset second time period is not less than a preset alarm load; wherein the alarm load is less than the shutdown load.

[0139] In one embodiment of the present application, based on the above solution, it can also be configured as follows:

[0140] A second collecting unit is used to collect the average blade root load of each blade of the wind turbine set within a preset third time period through various load collecting devices when it is detected that the angle of attack of each blade of the wind turbine set is less than a preset angle threshold;

[0141] The stop execution unit is used to stop executing the pitch changing action if the average blade root load of each blade of the wind turbine set within a preset third time period is less than the alarm load.

[0142] In one embodiment of the present application, based on the above solution, it can also be configured as follows:

[0143] The third control unit is used to control the wind turbine to start if the average wind speed is greater than a preset wind speed threshold.

[0144] In one embodiment of the present application, based on the above solution, it can also be configured as follows:

[0145] A return unit is used to return to the step of obtaining the average wind speed of the wind turbine set within the preset first time period if the average blade root loads of all blades within the preset second time period are less than the preset startup load.

[0146] In one embodiment of the present application, based on the above solution, when the first judgment unit 601 detects that the wind turbine generator set is in the leeward area, it is specifically used to:

[0147] Real-time monitoring of the nacelle position of wind turbines;

[0148] When it is monitored that the nacelle position of the wind turbine generator set is in the leeward area, it is determined that the wind turbine generator set is monitored to be in the leeward area.

[0149] An embodiment of the present application further provides a storage medium, wherein the storage medium stores an instruction set, wherein when the instruction set is executed, the wind turbine start-up method disclosed in any of the above embodiments is executed.

[0150] The present application also provides an electronic device, whose structural diagram is as follows: Figure 7As shown, it specifically includes a memory 701 for storing at least one set of instruction sets; a processor 702 for executing the instruction set stored in the memory, and implementing the wind turbine start-up method disclosed in any of the above embodiments by executing the instruction set.

[0151] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0152] Although several specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope disclosed in the present application. Certain features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination.

[0153] The above description is only a preferred embodiment disclosed in this application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the disclosure of this application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the disclosure of this application (but not limited to) to form a technical solution.

Claims

1. A method for starting a wind turbine generator set, characterized in that: include: When it is detected that the wind turbine generator set is in a leeward area, determining whether the wind turbine generator set is currently in a shutdown state; The leeward area is an area blocked by mountains; If the wind turbine generator set is currently in a shutdown state, obtaining an average wind speed of the wind turbine generator set within a preset first time period; If the average wind speed is not greater than the preset wind speed threshold, the blades of the wind turbine set are controlled to be in a fully open state, and the average blade root load of each blade of the wind turbine set within a preset second time period is collected through various load collection devices; wherein load collection devices are pre-installed on the blade roots of the windward side and the leeward side of each blade of the wind turbine set respectively; If the average blade root load of any blade within the preset second time period is not less than the preset startup load, the wind turbine set is controlled to start; If the average wind speed is greater than a preset wind speed threshold, the wind turbine is controlled to start; If the average blade root loads of all blades within the preset second time period are less than the preset startup load, returning to the step of obtaining the average wind speed of the wind turbine generator set within the preset first time period; If the wind turbine generator set is not currently in a shutdown state, then through various load devices, it is determined in real time whether the average blade root load of each blade of the wind turbine generator set within a preset second time period is less than a preset shutdown load; If the average blade root load of each blade of the wind turbine generator set within the preset second time period is not less than the preset shutdown load, controlling the wind turbine generator set to shut down; If the average blade root load of each blade of the wind turbine set within the preset second time period is less than the preset shutdown load, then when the average blade root load of each blade of the wind turbine set within the preset second time period is not less than the preset alarm load, a preset pitch change action is performed to reduce the blade root load; wherein, the alarm load is less than the shutdown load.

2. The method according to claim 1, characterized in that After the preset pitch changing action is performed, the method further includes: When it is detected that the angle of attack of each blade of the wind turbine generator set is less than a preset angle threshold, the average blade root load of each blade of the wind turbine generator set within a preset third time period is collected through various load collection devices; If the average blade root load of each blade of the wind turbine generator set within a preset third time period is less than the alarm load, the pitch changing action is stopped.

3. The method according to claim 1, characterized in that: The monitoring that the wind turbine generator set is in the leeward area includes: Real-time monitoring of the nacelle position of wind turbines; When it is monitored that the nacelle position of the wind turbine generator set is in the leeward area, it is determined that the wind turbine generator set is monitored to be in the leeward area.

4. A wind turbine start-up device, characterized in that: include: A first judgment unit is used to judge whether the wind turbine generator set is currently in a shutdown state when monitoring that the wind turbine generator set is in a leeward area; The leeward area is an area blocked by mountains; an acquisition unit, configured to acquire an average wind speed of the wind turbine generator set within a preset first time period if the wind turbine generator set is currently in a shutdown state; A first collection unit is used for controlling the blades of the wind turbine to be in a fully opened state if the average wind speed is not greater than a preset wind speed threshold, and collecting the average blade root load of each blade of the wind turbine within a preset second time period through various load collection devices; wherein load collection devices are pre-installed on the blade roots of the windward side and the leeward side of each blade of the wind turbine respectively; A first control unit, configured to control the wind turbine to start if the average blade root load of any blade within a preset second time period is not less than a preset starting load; A third control unit, configured to control the wind turbine to start if the average wind speed is greater than a preset wind speed threshold; A returning unit, configured to return to the step of obtaining the average wind speed of the wind turbine generator set within the preset first time period if the average blade root loads of all blades within the preset second time period are less than the preset startup load; The second judgment unit is used to judge in real time through various load devices whether the average blade root load of each blade of the wind turbine set within a preset second time period is less than a preset shutdown load if the wind turbine set is not currently in a shutdown state; a second control unit, configured to control the wind turbine generator set to shut down if the average blade root load of each blade of the wind turbine generator set within a preset second time period is not less than a preset shutdown load; An execution unit is used to execute a preset pitch change action to reduce the blade root load of the blade if the average blade root load of each blade of the wind turbine set within a preset second time period is less than a preset shutdown load, and when the average blade root load of each blade of the wind turbine set within the preset second time period is not less than a preset alarm load; wherein the alarm load is less than the shutdown load.

5. A storage medium, characterized in that: The storage medium stores an instruction set, wherein the instruction set, when executed by a processor, implements the wind turbine start-up method according to any one of claims 1 to 3.

6. An electronic device, characterized in that: include: A memory for storing at least one set of instructions; A processor is used to execute the instruction set stored in the memory, and implement the wind turbine start-up method according to any one of claims 1 to 3 by executing the instruction set.

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