Wind turbine generator emergency automatic control method and system based on wireless communication

Abstract

The invention relates to a wind turbine generator emergency automatic control method and system based on wireless communication. The method comprises the steps that 1, the M-minute average wind speed of a single machine, the typhoon transit state of the single machine, the power-off state of the single machine, the on-site state of the single machine, the maintenance state of the single machine, the on-site state of a back-up power source, the current of the back-up power source and the starting state feedback of the back-up power source are obtained; 2, judging whether an automatic control condition A of the station-level starting backup power supply is established or not; 3, judging whether an automatic control condition B of the stand-by power supply started by the stand-by machine is true or not; 4, judging whether automatic control of the backup power supply is executed or not, and if the conditions A and B are simultaneously established, entering the automatic control of the backup power supply; and step 5, circularly executing an automatic control process of the standby power supply of the ith wind turbine generator set, including instruction issuing, feedback judgment, retry and alarm processing until the standby power supply is successfully started or an alarm is triggered. The method avoids out-of-control of the unit caused by excessive power consumption of the backup power supply in the typhoon period, and reduces the cost.

Description

Technical Field

[0001] This invention belongs to the field of wind power generation technology, specifically relating to an emergency automatic control method and system for wind turbine generators based on wireless communication. Background Technology

[0002] In recent years, the scale of wind power generation has expanded rapidly. Wind turbines often face complex operating conditions such as typhoons and power outages. Precise control of backup power has become crucial to ensuring turbine safety and reducing costs. However, current emergency control technologies for wind turbines have many shortcomings and are insufficient to meet actual needs. At the data acquisition level, existing systems mostly rely on a single monitoring source and fail to achieve collaborative communication between the wind farm monitoring system and positioning management equipment (such as the Beidou control management unit). This makes it impossible to comprehensively acquire key parameters such as wind speed, typhoon status, power outage status, backup power current, and startup feedback, resulting in insufficient data support and affecting the accuracy of control decisions. In terms of control condition settings, traditional solutions lack hierarchical judgment logic at the site level and individual unit level. They only trigger the backup power supply to start through a simple threshold, without combining multi-dimensional parameters such as the average wind speed of the entire site, the maintenance status of the individual unit, and the local status of the backup power supply for comprehensive judgment. This can easily lead to false starts or missed starts, and cannot take into account both overall site protection and precise control of individual units. In the command transmission and fault handling stages, existing technologies have not established a reliable wireless communication feedback mechanism. After the command is issued, there is a lack of functions for multiple retries and failure counting statistics, and no emergency response measures such as pop-up alarms are set up. Once a command transmission failure or backup power supply startup abnormality occurs, it is difficult to troubleshoot and handle in a timely manner, which can easily lead to unit safety risks. At the same time, it also increases the cost of manual operation and maintenance and weakens the market competitiveness of wind turbine units.

[0003] Therefore, it is necessary to develop a new emergency automatic control method and system for wind turbines based on wireless communication. Summary of the Invention

[0004] The purpose of this invention is to provide a method and system for reinforcing large-area defects in the steel tower of a wind turbine, so as to avoid the risk of the wind turbine becoming uncontrollable due to excessive consumption of backup power caused by premature emergency response during typhoons, and to effectively reduce cost pressure.

[0005] In a first aspect, the present invention provides an emergency automatic control method for wind turbine generators based on wireless communication, comprising the following steps: Step 1: Data Acquisition: Acquire the average wind speed of the i-th wind turbine unit for M minutes, the typhoon passage status of the unit, the power outage status of the unit, the local status of the unit, the maintenance status of the unit, as well as the local status of the backup power supply, the backup power supply current, and the backup power supply startup status feedback of the i-th wind turbine unit. Step 2: Determine whether the automatic control condition A for the backup power supply at the station level is met: Set condition 1 and condition 2, traverse all wind turbine units in the station, and when condition 1 and condition 2 are met at the same time, it means that condition A is met. Condition 1: Any wind turbine in the entire field is in a single-unit typhoon passing state; Condition 2: Calculate the average wind speed of all wind turbines in the field, where the average wind speed is greater than a preset wind speed. Step 3: Determine whether the automatic control condition B of the backup power supply after single-unit startup is met: Set conditions 3 to 6. When all four conditions are met simultaneously, it means that condition B is met. Condition 3: The i-th wind turbine is in a power outage state; Condition 4: The i-th wind turbine is neither in a stand-alone local state nor in a stand-alone maintenance state; Condition 5: The backup power supply for the i-th wind turbine is not in a local state; Condition 6: The backup power supply current of the i-th wind turbine is less than the preset current value or the backup power supply startup status feedback is false. Step 4: Determine whether to execute automatic backup power control: If either condition A or condition B is not met, return to the waiting judgment cycle and re-enter step 2; if both conditions A and condition B are met, enter the automatic control of backup power supply. Step 5: Execute the automatic control process for the backup power supply, including issuing commands, feedback judgment, retrying and alarm handling, until the backup power supply starts successfully or an alarm is triggered, and then enter the next cycle.

[0006] In one possible implementation, step 1 involves acquiring the average wind speed (M minutes per unit) of the i-th wind turbine, its typhoon-affected status, power outage status, local status, and maintenance status from the wind farm monitoring system. Simultaneously, it involves acquiring the local status, backup power supply current, and backup power supply startup status feedback of the i-th wind turbine in real time from the BeiDou control and management unit. Obtaining relevant status data of the wind turbine itself through the wind farm monitoring system and relevant backup power supply data from the BeiDou control and management unit ensures the accuracy and professionalism of the data sources, providing a reliable data foundation for subsequent control condition assessment. Furthermore, utilizing the BeiDou system for data transmission enhances the stability and anti-interference capabilities of data acquisition, making it particularly suitable for harsh environments such as typhoons.

[0007] One possible implementation is that the instruction issuance in step 5 specifically involves: The i-th wind turbine unit sends a backup power start control command to the Beidou control and management unit.

[0008] One possible implementation is that the feedback judgment in step 5 includes the judgment of the Beidou control and management unit receiving the command: When the backup power start command feedback is true, it indicates that the Beidou control and management unit has received the backup power start command from below the i-th wind turbine. The background system prints a successful transmission log and enters the backup power start status judgment. When the backup power start command feedback is false, it indicates that the Beidou control and management unit has not received the backup power start command from below the i-th wind turbine. The transmission failure count is incremented by 1, the background system prints a transmission failure log, and enters the retry judgment. This refines the judgment process of the Beidou control and management unit in the feedback judgment stage. By processing different feedback results, it can promptly know whether the command has been successfully received, facilitating accurate log recording by the background system. It also provides a clear basis for subsequent retries or further operations, improving the traceability and targeting of the emergency control process.

[0009] One possible implementation is that the retry determination in step 5 specifically involves: If the number of failed transmissions is greater than or equal to the first preset number of failed transmissions, the transmission to the Beidou control and management unit is determined to have failed, the number of failed transmissions is set to zero, and an alarm is triggered. If the number of failed attempts is less than the first preset failure count, the instruction in step 5 will be re-executed after the first preset time. This clarifies the specific criteria and handling methods for retry judgment. When an instruction fails to be issued, setting a failure count threshold and a retry waiting time avoids the waste of resources caused by unlimited retries, increases the probability of successful instruction issuance, and provides timely alarm when the threshold is reached, facilitating staff intervention and ensuring the efficiency and reliability of the emergency control process.

[0010] In one possible implementation, the backup power supply startup status determination in step 5 specifically involves: When the backup power start-up status feedback of the i-th wind turbine is true, wait for the second preset time and then determine the backup power current. When the backup power supply startup status feedback is false, the backup power supply execution failure count is incremented by 1, the background prints the execution failure log, and initiates a retry judgment. The detailed procedure for judging the backup power supply startup status is specified, and different actions are taken based on the startup status feedback result. This allows for accurate understanding of the backup power supply startup execution status, timely recording of failure counts, and initiation of retry judgment, ensuring effective monitoring of the backup power supply startup process and providing a basis for subsequent retries or alarms.

[0011] One possible implementation is that the backup power supply current determination in step 5 after waiting for the second preset time specifically involves: If the backup power supply current of the i-th wind turbine is greater than or equal to the preset current value, the backup power supply is considered to have started successfully. The failure count is reset to zero, the background system prints a control success log from the Beidou control management unit, and the process enters the next cycle. If the backup power supply current of the i-th wind turbine is less than the preset current value, the backup power supply is considered to have failed to start. The backup power supply failure count is incremented by 1, the background system prints an execution failure log, and the process enters the retry judgment stage. After the backup power supply start status feedback is true, the current value is checked again after a certain period of time, ensuring the accuracy of current detection. The start-up success is determined based on the comparison between the current value and the preset value. This further refines the judgment criteria for start-up success and improves the accuracy of the judgment, ensuring that only backup power supplies that have truly started successfully will end the current process.

[0012] One possible implementation is that the retry determination specifically involves: If the number of backup power failures for the i-th wind turbine is greater than or equal to the second preset number of failures, it is determined that the backup power start-up controlled by the Beidou control management unit has failed. The number of failures will be set to zero, an alarm will be triggered, and the system will wait to enter the next cycle. If the number of backup power failures for the i-th wind turbine is less than the second preset failure count, the instruction in step 5 will be re-issued after a third preset time. The specific conditions and handling measures for retry judgment are clearly defined. By setting a threshold for the number of execution failures and a retry waiting time, the number of retries is reasonably controlled to avoid invalid retries. When the threshold is reached, an alarm is triggered and the cycle begins again. This ensures that the backup power is started to the maximum extent possible while also promptly notifying personnel to handle problems, thus balancing the efficiency and reliability of automatic control.

[0013] One possible implementation is that the average wind speed of all wind turbines in the field is obtained by calculating the average wind speed of each wind turbine over M minutes. This clarifies the calculation method for the average wind speed of all wind turbines in the field, ensuring the scientific accuracy of the average wind speed calculation. This provides a reliable calculation basis for comparing the average wind speed with the preset wind speed in condition 2, making the condition judgment more reasonable.

[0014] Secondly, the present invention provides an emergency automatic control system for wind turbine generators based on wireless communication, comprising a controller and a memory, wherein the memory stores a computer-readable program, and the computer-readable program, when invoked by the controller, can execute the emergency automatic control method for wind turbine generators based on wireless communication as described in the present invention.

[0015] The present invention has the following unexpected technical effects: (1) Based on the comprehensive judgment of the typhoon passing status of the wind turbine generator set and the average wind speed of the whole field, the present invention enables the timely activation of the backup power supply when necessary, avoiding the risk of the wind turbine generator set being out of control due to excessive power consumption of the backup power supply caused by the early emergency response during the typhoon, and can effectively reduce cost pressure. (2) In the event that the power grid is cut off and communication is not possible through the local network of the wind farm, the present invention designs a wireless communication scheme to obtain key information such as the backup power supply of the wind turbine by establishing communication with the Beidou control and management unit.

[0016] (3) The present invention automatically issues emergency response control commands for wind turbines based on wireless communication, and monitors and judges the start-up conditions of backup power in real time, so as to realize the timely automatic start-up of wind turbines under special working conditions and improve the stable operation of wind turbines during typhoons. Attached Figure Description

[0017] Figure 1 This is a flowchart of the wind turbine emergency automatic control method based on wireless communication described in the embodiments of this application; Figure 2 This is a detailed flowchart of the wind turbine emergency automatic control method based on wireless communication described in the embodiments of this application; Figure 3 This is a schematic diagram of the wind turbine emergency automatic control system based on wireless communication described in the embodiments of this application. Detailed Implementation

[0018] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0019] like Figure 1 and Figure 2 As shown in the embodiments of this application, an emergency automatic control method for wind turbine generators based on wireless communication includes the following steps: Step 1: Data Acquisition. First, the system acquires the average wind speed (M minutes) of the i-th wind turbine (e.g., 10-minute average speed, factoryAvgWinSpd10min_i), typhoon state (typhoonState_i), power outage state (windTurbinOff_i), local state (turbinLR_i), and maintenance state (workMode_i) of the i-th wind turbine from the wind farm monitoring system. Then, the system establishes communication with the Beidou control and management unit to acquire the backup power local state (backUpPowLR_i), backup power current (backUpPowCurr_i), backup power start-up status feedback (backUpPowStart_i), backup power start-up test command feedback (backUpPowTest_i), and backup power stop status feedback (backUpPowStop_i) of the i-th wind turbine in real time.

[0020] Step 2: Determine whether the automatic control condition A for the backup power supply after the station-level startup is met: Set conditions 1 and 2, and iterate through all the wind turbines in the site. When conditions 1 and 2 are met simultaneously, it means that the automatic control condition A for the automatic backup power supply at the site level is met; otherwise, it means that the automatic control condition A for the automatic backup power supply at the site level is not met.

[0021] Condition 1: Any wind turbine in the entire wind farm is in a single-unit typhoon passing state (typhoonState_i); Condition 2: The average wind speed of all wind turbines in the field is greater than the preset wind speed, such as 28 m / s.

[0022] For example, the average wind speed of all wind turbines in the field is calculated as follows: Obtain the 10-minute average wind speed of each wind turbine in the entire site, and calculate the average of the 10-minute average wind speeds of each wind turbine to obtain the average wind speed of all wind turbines in the entire site.

[0023] Step 3: Determine whether the automatic control condition B for the backup power supply after stand-alone startup is met: Set conditions 3, 4, 5, and 6, and iterate through all wind turbines in the field. When conditions 3, 4, 5, and 6 are all satisfied, it means that the automatic control condition B for the backup power supply of the i-th single turbine is met; otherwise, it means that the automatic control condition B for the backup power supply of the i-th single turbine is not met.

[0024] Condition 3: The i-th wind turbine is in a power-off state, i.e., windTurbinOff_i is True.

[0025] Condition 4: The i-th wind turbine is neither in a single-unit local state nor in a single-unit maintenance state, i.e., turbinLR_i is false and workMode_i is false.

[0026] Condition 5: The backup power supply for the i-th wind turbine is not in a local state, i.e., backUpPowLR_i is False.

[0027] Condition 6: The backup power supply current of the i-th wind turbine is less than the preset current value (e.g., 2A) or the backup power supply start-up status feedback of the i-th wind turbine is False, that is, backUpPowCurr_i < 2A or backUpPowStart_i is False.

[0028] Step 4: Determine whether to execute automatic backup power control: If either condition A or condition B is not met, return to the waiting period and proceed to step 2. If both conditions A and B are met, proceed to step 5.

[0029] Step 5: Execute the automatic control process for the wind turbine backup power supply: Step 51: The i-th wind turbine sends a backup power start control command to the Beidou control and management unit.

[0030] Step 52: The Beidou control and management unit determines whether it has received a backup power supply start command. Step 521: When the backup power start status feedback (backUpPowStart_i) is true, it means that the Beidou control and management unit has received the backup power start command from below the i-th wind turbine. Then the background will print the successful distribution log and proceed to step 53.

[0031] When the backup power start status feedback (backUpPowStart_i) is False, it means that the Beidou control and management unit has not received the backup power start command below the i-th wind turbine. Then, the number of failed transmissions (CONTROLFAIL_i) is incremented by 1, the background prints the transmission failure log, and proceeds to step 522.

[0032] Step 522: If the number of failed distributions is greater than or equal to the first preset number of failures (e.g., 2 times), proceed to step 523; if the number of failed distributions is less than the first preset number of failures, wait for the first preset time (e.g., 90 seconds) before proceeding to step 51.

[0033] Step 523: If the system determines that the BeiDou control and management machine has failed to be issued, the system will set the number of failed issuances (CONTROLFAIL_i) of the i-th wind turbine to zero, execute a pop-up alarm, and prompt: "Failed to issue BeiDou control and management machine." Proceed to step 54 and wait for the next loop.

[0034] Step 53: Determine the backup power supply startup status: When the backup power start-up status feedback (backUpPowStart_i) of the i-th wind turbine is True, proceed to step 531 after the second preset time (e.g., 120 seconds); when the backup power start-up status feedback (backUpPowStart_i) of the i-th wind turbine is False, proceed to step 532.

[0035] Step 531: When the backup power supply current (backUpPowCurr_i) of the i-th wind turbine is greater than or equal to the preset current value (e.g., 2A), it means that the backup power supply of the i-th wind turbine has been successfully started. The number of failed data transmissions (CONTROLFAIL_i) of the i-th wind turbine is set to zero. At the same time, the background prints the control success log of the Beidou control management machine, and then enters the next cycle.

[0036] If the backup power supply current (backUpPowCurr_i) of the i-th wind turbine is less than the preset current value, it means that the backup power supply of the i-th wind turbine has failed to start, and then proceed to step 532. Step 532: Increment the number of backup power failures (EXECFAIL_i) for the i-th wind turbine by 1, print the failure log in the background, and proceed to step 533. Step 533: If the number of backup power failures (EXECFAIL_i) of the i-th wind turbine is greater than or equal to the second preset number of failures (e.g., 2 times), proceed to step 534; if the number of backup power failures (EXECFAIL_i) of the i-th wind turbine is less than the second preset number of failures, wait for the third preset time (90 seconds) and then proceed to step 51 to issue the next backup power start command.

[0037] Step 534: If the backup power supply of the i-th wind turbine unit controlled by the Beidou control management unit fails to start, the system will set the number of failed transmissions (CONTROLFAIL_i) of the i-th wind turbine unit to zero and execute a pop-up alarm, indicating: The backup power supply of the i-th wind turbine unit controlled by the Beidou control management unit has failed to start, and wait to enter the next cycle.

[0038] This method supports the safety and cost reduction of wind turbine generators under complex operating conditions, thereby improving the competitiveness of wind turbine generators.

[0039] like Figure 3 As shown in the embodiments of this application, an emergency automatic control system for wind turbines based on wireless communication includes a controller and a memory. The memory stores a computer-readable program, which, when called by the controller, can execute the emergency automatic control method for wind turbines based on wireless communication as described in the embodiments of this application.

[0040] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention shall be considered equivalent substitutions and shall be included within the protection scope of the present invention.

Claims

1. A wireless communication-based emergency automatic control method for a wind turbine generator, characterized in that, The method comprises the following steps: Step 1, data acquisition: acquiring the M-minute average wind speed of the i-th wind turbine, the single-machine wind passage state, the single-machine power-off state, the single-machine on-site state, the single-machine maintenance state, and the backup power on-site state, the backup power current and the backup power start state feedback of the i-th wind turbine; Step 2, judging whether the automatic control condition A of starting the backup power at the site level is established: setting condition 1 and condition 2, traversing all wind turbines in the field, and when condition 1 and condition 2 are met at the same time, it is indicated that condition A is established; Wherein, condition 1: any wind turbine in the field is in the single-machine wind passage state; Condition 2: calculating the average wind speed of all wind turbines in the field, and the average wind speed is greater than the preset wind speed; Step 3, judging whether the automatic control condition B of starting the backup power of the single machine is established: setting condition 3 to condition 6, and when the four conditions are met at the same time, it is indicated that condition B is established; Wherein, condition 3: the i-th wind turbine is in the power-off state; Condition 4: the i-th wind turbine is not in the single-machine on-site state and not in the single-machine maintenance state; Condition 5: the backup power of the i-th wind turbine is not in the on-site state; Condition 6: the backup power current of the i-th wind turbine is less than the preset current value or the backup power start state feedback is false; Step 4, determining whether to execute the backup power automatic control: if any of condition A and condition B is not established, step 2 is entered; if condition A and condition B are established at the same time, step 5 is entered; Step 5, executing the backup power automatic control process: including instruction issuing, feedback judging, retrying and alarm processing, until the backup power is successfully started or the alarm is triggered to enter the next cycle.

2. The wireless communication based emergency automatic control method of wind turbine generator unit according to claim 1, characterized in that, In step 1, the M-minute average wind speed of the i-th wind turbine, the single-machine wind passage state, the single-machine power-off state, the single-machine on-site state, the single-machine maintenance state are acquired from the wind farm monitoring system, and the backup power on-site state, the backup power current and the backup power start state feedback of the i-th wind turbine are acquired from the Beidou control management machine in real time.

3. The wireless communication based emergency automatic control method of wind turbine generator unit according to claim 1, characterized in that, The instruction issuing in step 5 is specifically: The i-th wind turbine issues a backup power start control command to the Beidou control management machine.

4. The wireless communication based emergency automatic control method of wind turbine generator unit according to claim 3, characterized in that, The feedback judging in step 5 includes the judging of the Beidou control management machine receiving the instruction: When the backup power start instruction feedback is true, it indicates that the Beidou control management machine receives the backup power start instruction under the i-th wind turbine, the background prints the success log of issuing and enters the backup power execution start state judging; When the backup power start instruction feedback is false, it indicates that the Beidou control management machine does not receive the backup power start instruction under the i-th wind turbine, records the number of issuing failures plus 1, and the background prints the failure log of issuing and enters the retry judging.

5. The wireless communication based emergency automatic control method of wind turbine generator units according to claim 4, characterized in that, The retry judging in step 5 is specifically: If the number of issuing failures is greater than or equal to the first preset failure number, it is determined that the Beidou control management machine fails to issue this time, the number of issuing failures is set to zero, and the alarm is executed; If the number of issuing failures is less than the first preset failure number, the instruction issuing in step 5 is re-executed after waiting for the first preset time.

6. The wireless communication based emergency automatic control method of wind turbine generator unit according to claim 4, characterized in that, The backup power execution start state judging in step 5 is specifically: When the backup power supply start state feedback of the i th wind turbine generator is true, waiting for a second preset time, and then judging the backup power supply current; When the backup power supply start state feedback is false, the backup power supply execution failure number is recorded as 1, the background prints the execution failure log, and enters the execution retry judgment.

7. The wireless communication based emergency automatic control method of wind turbine generator unit according to claim 6, characterized in that, The backup power supply current judgment after waiting for a second preset time in step 5 is specifically: If the backup power supply current of the i th wind turbine generator is greater than or equal to the preset current value, it is determined that the backup power supply starts successfully, the failure number is set to zero, the background prints the Beidou control manager control success log, and enters the next cycle; If the backup power supply current of the i th wind turbine generator is less than the preset current value, it is determined that the backup power supply starts unsuccessfully, the backup power supply execution failure number is recorded as 1, the background prints the execution failure log, and enters the execution retry judgment.

8. The wireless communication based emergency automatic control method of wind turbine generator unit according to claim 6 or 7, characterized in that, The execution retry judgment is specifically: If the backup power supply execution failure number of the i th wind turbine generator is greater than or equal to the second preset failure number, it is determined that the backup power supply start of the Beidou control manager fails, the failure number is set to zero, the alarm is executed, and waiting for entering the next cycle; If the backup power supply execution failure number of the i th wind turbine generator is less than the second preset failure number, waiting for a third preset time, and then re-executing the instruction issuing in step 5.

9. The wireless communication based emergency automatic control method of wind turbine generator unit according to claim 1, characterized in that, The average wind speed of the whole field wind turbine generator is obtained by calculating the average value of the single machine M minute average wind speed of each wind turbine generator in the whole field.

10. A wireless communication-based emergency automatic control system for a wind turbine generator unit, characterized in that, The controller and the memory are included, the memory stores the computer readable program, and the computer readable program can execute the steps of the wireless communication based wind turbine generator emergency automatic control method according to any one of claims 1 to 9 when the controller calls.

Images