Control method and device under off-line on-load condition of net-forming type fan and electronic equipment
By acquiring the operating parameter values of the wind turbine, identifying the disturbance components, and generating additional parameter values for reactive power or voltage control at the load end, the oscillation problem caused by slow torque and speed control response under offline load conditions of grid-type wind turbines is solved, thereby achieving dynamic performance improvement and power matching of the wind turbine.
Patent Information
- Application Number
- CN202511439052.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-02-27
AI Technical Summary
When a grid-type wind turbine is under offline load, the control response of torque and speed is slow, which can cause the turbine to vibrate and potentially cause mechanical damage.
By acquiring the operating parameter values of the wind turbine, identifying the disturbance-induced components, generating additional parameter values for reactive power or voltage control at the load end, and applying them to the load end, reactive power or voltage control is achieved to improve the dynamic performance of the system and avoid oscillations caused by slow torque regulation response.
It effectively suppresses fan oscillation, improves system dynamic performance, achieves timely power matching, and avoids fan oscillation caused by slow torque adjustment response.
Smart Images
Figure CN121584734A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Embodiments of the present application relate to the technical field of wind power generation, in particular to a control method and device for off-line load condition of grid-forming wind turbine. BACKGROUND
[0002] The grid-forming wind turbine is the core equipment of a new generation of wind power technology. Unlike the traditional wind turbine which relies on grid voltage / frequency signals to stabilize operation, the grid-forming wind turbine has the ability to actively build grid voltage and maintain system frequency, and is the key equipment for safe and stable operation of high-proportion new energy grid (such as "new energy + energy storage" system).
[0003] In the current control process of the grid-forming wind turbine, the torque and speed of the wind turbine are determined based on the load end power. When the grid-forming wind turbine is off-line with load, when the load end power is constant, the torque x speed value also needs to remain unchanged. In order to ensure that the torque x speed value remains unchanged, when the wind turbine is disturbed, for example, when the disturbance causes the speed value to increase, the torque value will be controlled to decrease. However, at this time, the control of the torque value may have a slow response, which may cause the wind turbine to oscillate, thereby causing mechanical damage to the wind turbine. SUMMARY
[0004] The purpose of the embodiments of the present application is to provide a control method for off-line load condition of grid-forming wind turbine, which can effectively suppress wind turbine oscillation.
[0005] To solve the above technical problems, the embodiments of the present application provide a control method for off-line load condition of grid-forming wind turbine, comprising: obtaining a working parameter value of a wind turbine; identifying a part caused by disturbance in the working parameter value, and generating an additional parameter value for load end reactive power or voltage control according to the part caused by disturbance; and applying the additional parameter value of the reactive power or voltage control to the load end of the wind turbine.
[0006] The embodiments of the present application also provide a control device for off-line load condition of grid-forming wind turbine, comprising: an obtaining module configured to obtain a working parameter value of a wind turbine; a processing module configured to identify a part caused by disturbance in the working parameter value, and generate an additional parameter value for load end reactive power or voltage control according to the part caused by disturbance; an output module configured to apply the additional parameter value of the reactive power or voltage control to the load end of the wind turbine.
[0007] The embodiments of the present application also provide an electronic device, comprising: at least one processor; and a memory in communication with the at least one processor; wherein The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the control method in the off-line load condition of the networked fan as described above.
[0008] Embodiments of the present application also provide a computer readable storage medium, which stores computer instructions, and the computer instructions are executed by a processor to implement the control method in the off-line load condition of the networked fan as described above.
[0009] The control method in the off-line load condition of the networked fan in the present application, by acquiring the working parameter value of the fan, when the fan appears disturbance, the part of the working parameter value that generates disturbance is identified, additional parameter value of reactive power or voltage control at the load end is generated accordingly, and is applied to the load end for reactive power or voltage control, so as to improve the dynamic performance of the system. When disturbance occurs and power changes, the overall power matching is realized in time through reactive power or voltage control at the load end, without the need to adjust the torque to keep the balance between the fan output and the load consumption power, which can effectively suppress the oscillation of the fan caused by slow torque adjustment response. BRIEF DESCRIPTION OF DRAWINGS
[0010] One or more embodiments are illustrated by way of example in the drawings that are not intended to be limiting of the embodiments so that one of ordinary skill in the art will understand that not all of the drawings are to scale, and that where a term is used it is not a limitation unless contrary to a definition, and that, one of ordinary skill in the art will appreciate variations and modifications in the embodiments disclosed.
[0011] Figure 1 is a flowchart of the control method in the off-line load condition of the networked fan provided in an embodiment of the present application Figure 1 ; Figure 2 is a control diagram for active control of the load end in an embodiment of the present application; Figure 3 is a control diagram for reactive power or voltage control of the load end in an embodiment of the present application; Figure 4 is a flowchart of the control method in the off-line load condition of the networked fan provided in an embodiment of the present application Figure 2 ; Figure 5 is a flowchart of the control method in the off-line load condition of the networked fan provided in an embodiment of the present application Figure 3 ; Figure 6 is a structural block diagram of the control device in the off-line load condition of the networked fan provided in an embodiment of the present application; Figure 7FIG. 1 is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0012] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even without these technical details and various changes and modifications based on the following embodiments. The division of the following embodiments is for the convenience of description, and should not constitute any limitation on the specific implementation of the present application, and the embodiments can be combined and referenced with each other on the premise of not contradicting.
[0013] The present applicant has found through research that, in the control process of the current network-constructed fan, the mechanical power of the fan and the electrical power consumed by the load end need to be balanced, the mechanical power of the fan is the product of the torque and the rotating speed, that is, the product of the torque T and the rotating speed N needs to be kept constant: Torque T x Rotating speed N = Load power. When the network-constructed fan is off-line with load, the load end power is usually constant, so the product of the torque and the rotating speed of the fan needs to be kept constant through control. The control logic under normal circumstances is that, if the rotating speed N increases, the torque T must decrease proportionally, and if the rotating speed N decreases, the torque T must increase proportionally. When the fan is disturbed, such as a sudden gust of wind or a slight fluctuation of the load, the rotating speed N of the fan suddenly increases a little, and the torque value is controlled to be small, but at this time, the control of the torque value may have a slow response, such as an actual change in the torque of the blade (by adjusting the pitch angle or the electromagnetic torque of the generator) needs a physical process, and there is a time delay, which may come from the calculation time of the controller, the mechanical action time of the actuator (such as the variable pitch system), the inertia of energy transmission, etc. During this delay period, the rotating speed continues to increase, but the torque value has not yet decreased, at this time, the mechanical power supplied to the fan system is temporarily greater than the electrical power consumed by the load, and the excess energy has nowhere to go, but can only be converted into the kinetic energy of the fan, causing the rotating speed of the fan to further increase. When the torque value finally begins to decrease, it may even decrease too much due to system inertia, and may be lower than the target value, which may cause the actual mechanical power of the fan to be less than the load power, at this time, the system needs to absorb energy from the kinetic energy to maintain the load, causing the rotating speed to begin to decrease, and the controller sees the decrease in the rotating speed and commands the torque to increase, but the torque increase also has a delay, so in the process of the rotating speed decreasing, the torque response is slow and the brake is oversteered, causing the rotating speed to decrease even lower; in this way, in the process of "catching up" with the power balance point, because the response speed of the torque cannot keep up with the change speed of the rotating speed, each adjustment is "oversteered", thereby forming continuous oscillation of the rotating speed and the torque.
[0014] To solve the above technical problems, an embodiment of the present application relates to a control method, device and electronic equipment for a grid-connected wind turbine under an offline load condition. The control method for the grid-connected wind turbine under the offline load condition comprises: obtaining a working parameter value of the wind turbine; identifying a part of the working parameter value caused by disturbance, and generating an additional parameter value for reactive power or voltage control at a load end according to the part caused by disturbance; and applying the additional parameter value for the reactive power or voltage control to the load end of the wind turbine. The control method for the grid-connected wind turbine under the offline load condition in the present application obtains the working parameter value of the wind turbine, identifies the part of the working parameter value caused by disturbance when the wind turbine is disturbed, generates the additional parameter value for the reactive power or voltage control at the load end, and applies the additional parameter value to the load end for the reactive power or voltage control, so as to improve the dynamic performance of the system. When the disturbance occurs and the power changes, the reactive power or voltage control at the load end is used to realize the overall power matching in time, and the balance between the output of the wind turbine and the power consumption of the load is maintained without adjusting the torque, so as to effectively inhibit the oscillation of the wind turbine caused by slow torque adjustment response.
[0015] The implementation details of the control method for the grid-connected wind turbine under the offline load condition in the embodiment of the present application will be described in detail below. The following implementation details are provided for the convenience of understanding, and are not essential for implementing the present solution.
[0016] Referring to Figure 1 An embodiment of the present application provides a control method for a grid-connected wind turbine under an offline load condition, comprising: S100, obtaining a working parameter value of the wind turbine.
[0017] The control method for the grid-connected wind turbine under the offline load condition in the present application can be applied to a wind turbine controller. The above working parameter value can be collected by various sensors and intelligent control units installed on the wind turbine or the load end of the wind turbine, and transmitted to the wind turbine controller through a data bus or a network.
[0018] In an optional embodiment, the working parameter value comprises at least one of an active power value, a wind turbine speed value, a wind turbine torque value and an active current value, to represent the running and output state of the current wind turbine.
[0019] The active power value refers to the power actually output by the wind turbine and fed to the load end to do effective work to be converted into heat energy, mechanical energy or light energy, etc. It is usually kilowatt or megawatt, and can be directly measured by a power transmitter or a smart meter, or indirectly calculated through bus voltage and current.
[0020] The wind turbine speed value is the speed of rotation of the impeller or generator shaft of the wind turbine, and is usually revolutions per minute, which can be obtained by feedback through an encoder or a frequency converter, etc.
[0021] The fan torque value refers to the torsional moment of the fan impeller rotation, and is usually in Newton-meters. The fan torque value can be obtained through a torque sensor or through calculation of power and rotational speed.
[0022] The active current refers to the current component that generates active power, and is usually in amperes. The active current can be directly detected through a current detection device or a frequency converter.
[0023] Referring to Figure 2 In the present application, the fan controller can include a first grid-forming controller. A virtual phase can be output to the load end through the first grid-forming controller to achieve active control. The virtual phase can be generated based on an active power, a torque, or an active current instruction. In addition, the active power, the torque, or the active current fed back by the load end can be combined in the generation of the virtual phase for dynamic adjustment.
[0024] S200, identifying a part caused by disturbance in the working parameter value, and generating an additional parameter value for reactive or voltage control of the load end according to the part caused by disturbance.
[0025] S300, applying the additional parameter value for reactive or voltage control to the load end of the fan.
[0026] In the case of off-line load of the grid-forming fan, the working parameter value of the fan will change with the operation of the fan. When a disturbance occurs, such as a disturbance caused by a change in wind speed or a disturbance caused by a fluctuation in load power, the working parameter value will fluctuate accordingly. In this regard, when a disturbance occurs, the part caused by disturbance in the working parameter value can be identified to determine the immediate impact on the fan.
[0027] For example, for the fan speed value, the fan speed measured in real time is compared with the reference speed reflecting the power demand of the load end to obtain the component of speed disturbance as the part caused by disturbance. Correspondingly, for the active power value, the active power measured in real time is compared with the reference power reflecting the power demand of the load end to obtain the load change as the part caused by disturbance.
[0028] Based on the identified part caused by disturbance, an additional parameter value for reactive or voltage control of the load end is generated to perform reactive or voltage control of the load end of the fan.
[0029] The fluctuation part caused by disturbance can be identified based on parameter deviation comparison, etc. For example, the regular part in the working parameter is determined, and the part caused by disturbance is obtained by filtering out the regular part in the working parameter value. The regular part refers to the control parameter value that meets the power demand of the load end.
[0030] Specifically, the part of the working parameter value caused by the disturbance can be identified through damping control, for example, a band-pass filter can be set, which is set to filter out the control parameter value satisfying the load end power requirement. Then, through a constant multiplication module, the additional parameter value for the load end reactive power or voltage control is generated based on the disturbed part obtained by filtering. The constant in the constant multiplication module can be designed according to different types of working parameter values and actual experience.
[0031] For the reactive power or voltage control of the load end, it refers to the power of the grid-connected wind turbine as the power supply of the load end to establish and maintain the alternating electromagnetic field.
[0032] The reactive power or voltage of the load end is changed to offset the impact caused by the wind or load disturbance. When the wind turbine is disturbed to increase the power (for example, the speed increases), the additional parameter value is applied to increase the reactive power or voltage of the load end, so that the increased power of the wind turbine caused by the disturbance is matched by increasing the overall power of the load end. In a specific embodiment, the control method of the grid-connected wind turbine under off-line load condition further comprises: maintaining the torque of the wind turbine when the speed of the wind turbine changes, wherein the amount of change of the output power of the wind turbine caused by the change of the speed of the wind turbine is matched with the amount of power consumption of the load end after the additional parameter value of the reactive power or voltage control is applied to the load end of the wind turbine, thereby avoiding oscillation by adjusting the reactive power or voltage of the load end to eliminate the impact of the wind turbine disturbance.
[0033] For example, when the wind turbine is disturbed to decrease the power (for example, the speed decreases), the additional parameter value is applied to reduce the power of the load end, so that the decreased power of the wind turbine caused by the disturbance is matched by reducing the power of the load end to eliminate the impact.
[0034] Therefore, the control method of the grid-connected wind turbine under off-line load condition in the present application obtains the working parameter value of the wind turbine, identifies the part of the working parameter value caused by the disturbance when the wind turbine is disturbed, generates the additional parameter value for the load end reactive power or voltage control, and applies it to the load end for reactive power or voltage control, thereby improving the dynamic performance of the system. When the power changes due to disturbance, the reactive power or voltage control of the load end is used to realize power matching in time, without the need to adjust the torque to maintain the balance between the output of the wind turbine and the power consumption of the load, which can effectively suppress the oscillation of the wind turbine caused by the slow response of the torque adjustment.
[0035] In an optional embodiment of the present application, the additional parameter value of the reactive power or voltage control includes at least one of the reactive power value, the voltage value and the reactive current value.
[0036] Reference Figure 3As shown, after obtaining the working parameter values of the fan, such as active power, speed, torque, and active current, the part caused by disturbance is identified from the working parameter values based on damping control, and is converted into an additional parameter value (such as reactive power / voltage / reactive current instruction 2 in Figure 3 In this application, the fan controller can include a second grid-forming controller, and a virtual internal electromotive force can be output for the load end through the second grid-forming controller to realize reactive power or voltage control. The virtual internal electromotive force can be generated based on the reactive power value, the voltage value, and the reactive current value in the additional parameter value. For example, the reactive power value can be directly taken as a control target to perform reactive power control of the load end. For example, a specific voltage value and a reactive current value can be generated according to the target, and the virtual internal electromotive force can be generated based on the voltage value and the reactive current value to control the load end. Alternatively, the voltage value or the reactive current value or a combination of the three can be used to determine the virtual internal electromotive force to control the load end.
[0037] Referring to Figure 4 As shown, in an optional embodiment, the application of the additional parameter value for reactive power or voltage control to the load end of the fan includes: superimposing the additional parameter value for reactive power or voltage control on a conventional parameter value for reactive power or voltage control, and applying the superimposed parameter value to the load end of the fan; The conventional parameter value for reactive power or voltage control includes a fan reactive power control parameter value meeting the reactive power demand of the load end, or a fan voltage control parameter value meeting the voltage demand of the load end.
[0038] The conventional parameter value is generated based on the steady-state reactive power demand of the load end or the voltage demand of the load end, and reflects the basic matching relationship between the fan and the load (such as the reactive power reference value and the voltage reference value under rated working conditions), thereby ensuring the basic supply for normal operation of the load. The additional parameter value is dynamically generated for disturbance and is used to offset the disturbance. The two types of parameters are matched first, such as being controlled based on reactive power, reactive current, or voltage. Then, the total control amount is calculated according to the linear superimposition logic of the conventional parameter value and the additional parameter value. The superimposition can be processed by low-pass filtering to avoid the impact of sudden changes in the additional parameter on the conventional parameter. The superimposed parameter value can be used to generate a virtual internal electromotive force to control the load end. In this way, the steady-state reactive power demand of the load is maintained, the impact of disturbance is compensated in real time, and the dynamic stability of the offline load is significantly improved.
[0039] Specifically, referring to Figure 3 and Figure 5 As shown, in this embodiment, the superimposition of the additional parameter value for reactive power or voltage control on the conventional parameter value for reactive power or voltage control, and the application of the superimposed parameter value to the load end of the fan, includes: The additional parameter value of the reactive power or voltage control, the conventional parameter value of the reactive power or voltage control and the collected feedback value of the reactive power or voltage control are superimposed, and the superimposed parameter value is applied to the load end of the fan.
[0040] In this embodiment, the virtual internal potential of the load end reactive power or voltage control is generated based on the additional parameter value (such as the reactive power / voltage / reactive current instruction 2 in Figure 3 the conventional parameter value (such as the reactive power / voltage / reactive current instruction 1 in Figure 3 and the feedback value (such as the reactive power / voltage / reactive current feedback in Figure 3 The reactive power or voltage control feedback value refers to the actual output value of the reactive power or voltage control collected by the load end sensor in real time, which can include the reactive power and voltage values.
[0041] The conventional parameter value of the reactive power or voltage control is the reactive current instruction calculated by the higher-level control system according to the overall operation state of the system, which represents the required reactive current reference value to meet the total reactive power demand of the load end and achieve a specific control target (such as constant voltage operation, reactive power scheduling) under the current operating condition. It is a "set value" or "target value", which is the primary pursuit of the control system.
[0042] As mentioned earlier, the additional parameter value of the reactive power or voltage control is a compensation generated by identifying the wind or load disturbance in real time and identifying the disturbance part. It does not depend on whether the final output result deviates, and the purpose is to actively resist the impact of known disturbances on the system.
[0043] The collected feedback value of the reactive power or voltage control can be obtained in real time by the sensor, which represents the real output state of the system.
[0044] Through the superposition of the three, the control system has target, predictability and accuracy, and can better resist external disturbances. Even in the face of severe wind speed changes and load switching, the reactive current output by the converter can be highly stable and accurate. The superimposed total instruction value can be sent to the network structure controller 2, and then the virtual internal potential is generated, so as to be applied to the load end of the fan, thereby realizing the reactive power or voltage control of the load end and improving the reliability of the reactive power or voltage control.
[0045] The step division of the above method is only for clear description, and can be combined into one step or some steps can be split and decomposed into multiple steps as long as the same logical relationship is included, which is within the protection scope of the patent; adding insignificant modifications or introducing insignificant designs in the algorithm or process, but not changing the core design of the algorithm and process are within the protection scope of the patent.
[0046] In addition, the examples mentioned in the above embodiments can be freely combined, and any combination can be understood as an embodiment. The "embodiment" or "example" appearing at various positions in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art can understand that the embodiments described herein can be combined with other embodiments.
[0047] Referring to Figure 6 Another embodiment of the present application relates to a control device for a grid-connected wind turbine in an offline load carrying condition, comprising: an acquisition module configured to acquire a working parameter value of the wind turbine; a processing module configured to identify a part of the working parameter value caused by disturbance, and generate an additional parameter value for reactive power or voltage control at a load end according to the part caused by disturbance; an output module configured to apply the additional parameter value for reactive power or voltage control to the load end of the wind turbine.
[0048] The control device for a grid-connected wind turbine in an offline load carrying condition in the embodiments of the present application is a device embodiment corresponding to the control method for a grid-connected wind turbine in an offline load carrying condition, and has similar beneficial effects to the above embodiments, which will not be described here.
[0049] Another embodiment of the present application relates to an electronic device, referring to Figure 7 as shown, comprising at least one processor; and a memory connected in communication with the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the control method for a grid-connected wind turbine in an offline load carrying condition as described above.
[0050] The memory and the processor are connected in a bus manner, the bus can include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors and memories together. The bus can also connect various other circuits such as peripheral devices, voltage stabilizers and power management circuits, etc., which are well known in the art, and therefore, they will not be further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be one element or multiple elements, such as multiple receivers and transmitters, which provide units for communicating with various other devices on the transmission medium. The data processed by the processor is transmitted on the wireless medium through the antenna, and further, the antenna also receives data and transmits the data to the processor.
[0051] The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interface, voltage regulation, power management, and other control functions. The memory can be used to store data used by the processor in performing operations.
[0052] Another embodiment of the present application relates to a computer readable storage medium storing a computer program. The computer program is executed by a processor to implement the method embodiments.
[0053] That is, those skilled in the art can understand that all or part of the steps of the method in the above embodiments can be completed by a program instructing related hardware. The program is stored in a storage medium and includes a plurality of instructions for enabling an apparatus (which can be a single-chip microcomputer, a chip, etc.) or a processor to perform all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media capable of storing program codes.
[0054] Those skilled in the art can understand that the above embodiments are specific embodiments for implementing the present application, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application.
Claims
1. A control method for a grid forming wind turbine in an off-line with load condition, characterized in that, The method comprises: acquiring a working parameter value of a fan; identifying a part of the working parameter value caused by disturbance, and generating an additional parameter value for load end reactive power or voltage control according to the part caused by disturbance; applying the additional parameter value of the reactive power or voltage control to the load end of the fan.
2. The control method of claim 1, wherein, The identification of the part of the working parameter value caused by disturbance comprises: filtering out a regular part in the working parameter value to obtain the part caused by disturbance; wherein the regular part refers to a control parameter value meeting the load end power requirement.
3. The control method of claim 1, wherein, The additional parameter value of the reactive power or voltage control comprises at least one of a reactive power value, a voltage value and a reactive current value.
4. The control method of the network configuration type fan in an off-line with load condition according to claim 1, characterized in that, The application of the additional parameter value of the reactive power or voltage control to the load end of the fan comprises: superimposing the additional parameter value of the reactive power or voltage control on a regular parameter value of the reactive power or voltage control, and applying the superimposed parameter value to the load end of the fan; wherein the regular parameter value of the reactive power or voltage control comprises a fan reactive power control parameter value meeting the load end reactive power requirement, or a fan voltage control parameter value meeting the load end voltage requirement. The superimposition of the additional parameter value of the reactive power or voltage control on the regular parameter value of the reactive power or voltage control, and the application of the superimposed parameter value to the load end of the fan, comprises:
5. The control method of the network configuration type fan in an off-line with load condition according to claim 4, characterized in that, superimposing the additional parameter value of the reactive power or voltage control, the regular parameter value of the reactive power or voltage control and a feedback value of the reactive power or voltage control collected, and applying the superimposed parameter value to the load end of the fan. The working parameter value comprises at least one of an active power value, a fan speed value, a fan torque value and an active current value.
6. The control method of a grid-connected wind generator in off-line with load condition according to any one of claims 1-5, characterized in that, The method further comprises:
7. The control method of a grid-connected wind generator in off-line with load condition according to any one of claims 1-5, characterized in that, maintaining the torque of the fan when the fan speed changes, wherein the change amount of the fan output power caused by the change of the fan speed matches the reactive power consumption amount of the load end after the application of the additional parameter value of the reactive power or voltage control to the load end of the fan. The method comprises:
8. A control device for a grid-connected wind turbine in an off-line with load condition, characterized in that an acquisition module configured to acquire a working parameter value of a fan; a processing module configured to identify a part of the working parameter value caused by disturbance, and generate an additional parameter value for load end reactive power or voltage control according to the part caused by disturbance; an output module configured to apply the additional parameter value of the reactive power or voltage control to the load end of the fan. The method comprises:
9. An electronic device, comprising: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the control method of the networked fan under off-line load condition as claimed in any one of claims 1-7. The computer readable storage medium stores computer instructions, and the computer instructions are executed by the processor to implement the control method of the networked fan under off-line load condition as claimed in any one of claims 1-7.
10. A computer-readable storage medium, characterized in that,