Inertia response control method of wind turbine generator

Abstract

The invention particularly relates to an inertia response control method for a wind turbine generator, and the method comprises the steps: S1, enabling a converter to detect the change rate of the frequency of a power grid when the wind turbine generator operates normally; s2, judging whether the upper limit and the lower limit of the power grid frequency change rate are exceeded according to the power grid frequency, entering inertia response if the upper limit and the lower limit of the power grid frequency are exceeded, and keeping a running state of the wind turbine generator if the upper limit and the lower limit of the power grid frequency are not exceeded; s3, when the power grid frequency change rate exceeds the upper limit and the lower limit of the change rate, a wind turbine generator main control system of the wind turbine generator enters an inertia response mode; and S4, judging whether the rotating speed of the wind turbine generator and the power grid state are normal during inertia response, if the rotating speed of the wind turbine generator and the power grid state are normal, ending inertia response, and if the rotating speed of the wind turbine generator and the power grid state are abnormal, returning to the step S1 for re-detection of the converter, and performing inertia response and master control cooperation of the wind turbine generator through the converter. And the effect of quickly responding and controlling the active power is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine generator systems, and in particular to an inertia response control method for a wind turbine generator system. Background Art

[0002] A wind turbine is a device that converts wind energy into electricity. It primarily utilizes vector conversion control technology based on doubly-fed wind turbines. This technology decouples speed and grid frequency through magnetic field orientation, enabling rapid response and flexible control. This effectively adapts to the fluctuating nature of wind power and improves wind power grid integration.

[0003] Currently, inertia response control typically relies on the wind turbine's master control system. Based on grid frequency fluctuations and pre-set control logic, the master control system issues commands. The pitch control system and converter, working in conjunction with the master control algorithm, adjust the wind turbine's operating state, achieving inertia response to control active power output and, in turn, regulating grid frequency fluctuations.

[0004] However, while existing master-dominated inertia response control strategies can achieve a certain degree of active power regulation, their response speed is relatively slow. Under the existing strategy, the master control system must detect, determine, and calculate grid frequency changes before issuing instructions. The pitch control system and converter then act accordingly, resulting in a certain delay in the entire process. In actual grid operation, frequency fluctuations can be frequent and rapid. This slow response speed makes it difficult to meet the grid's urgent need for rapid frequency regulation. Consequently, wind turbines fail to achieve optimal regulation in response to sudden grid frequency changes, failing to fully utilize their potential frequency regulation capabilities, and thus impacting the overall stability and reliability of the grid.

[0005] Therefore, it is necessary to provide a new inertia response control method for wind turbines. Summary of the Invention

[0006] In view of the above problems existing in the prior art, an object of the embodiments of the present invention is to provide an inertia response control method for a wind turbine to ensure feathering safety and avoid runaway accidents when three blades are extended simultaneously.

[0007] To achieve the above objectives, the present invention provides, on the one hand, a method for controlling inertia response of a wind turbine generator set, characterized by comprising:

[0008] Step S1, when the wind turbine generator system is operating normally, the converter detects the rate of change of the grid frequency;

[0009] Step S2: judging whether the grid frequency exceeds the upper and lower limits of the grid frequency change rate according to the grid frequency. If the grid frequency exceeds the upper and lower limits, the inertia response is initiated. If the grid frequency does not exceed the upper and lower limits, the wind turbine remains in operation.

[0010] Step S3: When the grid frequency change rate exceeds the upper and lower limits of the change rate, the wind turbine main control system of the wind turbine enters the inertia response mode;

[0011] When the grid frequency change rate exceeds the upper and lower limits, the converter activates the inertia response function. The converter calculates the inertia response power increment based on the frequency change rate and transmits the inertia response activation signal and the active power increment before activation to the wind turbine main control system via communication. The wind turbine main control system then enters the inertia response mode, superimposes the active power increment on the power loop of the pitch control loop, calculates the pitch angle change of the pitch system, adjusts the pitch angle, and cooperates with the converter to perform inertia power response.

[0012] Step S4, determining whether the speed of the wind turbine and the grid status are normal during the inertia response period. If the speed of the wind turbine and the grid status are normal, the inertia response is terminated. If the speed of the wind turbine and the grid status are abnormal, the process returns to step S1 and the converter re-detects the grid frequency change rate.

[0013] Furthermore, in S1, when the wind turbine is operating normally, the converter detects the rate of change of the grid frequency, including: during the normal operation of the wind turbine, the converter samples the grid frequency, and quickly calculates the rate of change of the grid frequency by comparing the frequency values ​​of adjacent sampling points.

[0014] Furthermore, in S2, determining whether the grid frequency change rate exceeds the upper and lower limits includes: the wind turbine system comparing the actual grid frequency change rate with pre-set upper and lower limit thresholds of the grid frequency change rate.

[0015] Furthermore, the preset upper and lower thresholds are determined based on the operating characteristics of the wind turbine grid, the access capacity of the wind farm, and the control capability of the wind turbine.

[0016] Furthermore, in S3, when the grid frequency change rate exceeds the upper and lower limits of the change rate, the wind turbine main control system of the wind turbine enters the inertia response mode, including: the grid frequency change rate exceeds the upper and lower limits of the change rate, the converter activates the inertia response function, the converter calculates the inertia response power increment based on the frequency change rate, and transmits the inertia response activation signal and the active power increment before activation to the wind turbine main control system through communication.

[0017] Furthermore, the functional relationship between the inertia response power increment and the frequency change rate is as follows:

[0018]

[0019] where ΔP t Indicates the change in active power of the wind farm, P t is the active power of the wind farm, f represents the frequency of the wind farm grid connection point, f N is the rated frequency of the power system, Δf represents the frequency deviation of the power system, T J is the equivalent inertia time constant of the wind farm, and t is the time.

[0020] Furthermore, when the wind turbine main control system enters the inertia response mode, the active power increment is added to the power loop in the pitch control loop to calculate the pitch angle change of the pitch system.

[0021] Furthermore, the proportional-integral algorithm of the power loop is as follows:

[0022] Δβ=k p ΔP+k i ∫ΔPdt

[0023] Among them, k i is the proportionality coefficient, k p is the integral coefficient, ΔP represents the power change of the inertia response control, and Δβ is the pitch angle change of the pitch system.

[0024] The embodiment of the present invention further provides a network-side server, comprising:

[0025] at least one processor; and a memory communicatively connected to the at least one processor; wherein,

[0026] The memory stores instructions that can be executed by the at least one processor. The instructions are executed by the at least one processor so that the at least one processor can execute the above-mentioned inertia response control method of the wind turbine generator system.

[0027] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program. The computer program is executed by a processor to implement the above-mentioned inertia response control method for a wind turbine generator set.

[0028] The beneficial effects of the present invention are as follows: the inertia response control method of the wind turbine of the present invention includes the first embodiment of the present invention providing an inertia response control method of the wind turbine, including: when the wind turbine is operating normally, the converter detects the rate of change of the grid frequency, and judges whether it exceeds the upper and lower limits of the grid frequency change rate according to the grid frequency; if it exceeds the upper and lower limits of the grid frequency, the inertia response is entered; if it does not exceed the upper and lower limits of the grid frequency, the wind turbine maintains the operating state; when the grid frequency change rate exceeds the upper and lower limits of the change rate, the wind turbine main control system of the wind turbine enters the inertia response mode; judges whether the speed and grid status of the wind turbine are normal during the inertia response; if the speed and grid status of the wind turbine are normal, the inertia response is terminated; if the speed and grid status of the wind turbine are abnormal, the converter returns to step S1 to re-detect the grid frequency change rate, and by using the converter to perform inertia response, the main control of the wind turbine cooperates, thereby achieving the effect of fast response control of active power. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and examples.

[0030] In the picture:

[0031] Figure 1 This is a flow chart of the inertia response control method for a wind turbine generator set provided in the first embodiment of the present invention.

[0032] Figure 2 This is a diagram of the dual proportional integral algorithm for the speed loop and the power loop in the pitch control loop of the present invention.

[0033] Figure 3 It is a structural diagram of a network-side server provided according to a third embodiment of the present invention. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0035] First embodiment:

[0036] See Figure 1The first embodiment of the present invention provides an inertia response control method for a wind turbine generator set. When the wind turbine generator set operates normally, the converter detects the rate of change of the grid frequency and determines whether it exceeds the upper and lower limits of the grid frequency change rate according to the grid frequency. If it exceeds the upper and lower limits of the grid frequency, the inertia response is entered. If it does not exceed the upper and lower limits of the grid frequency, the wind turbine generator set maintains the operating state. When the rate of change of the grid frequency exceeds the upper and lower limits of the rate of change, the wind turbine generator set main control system enters the inertia response mode. During the inertia response period, it is determined whether the speed of the wind turbine generator set and the grid status are normal. If the speed of the wind turbine generator set and the grid status are normal, the wind turbine generator set main control system enters the inertia response mode. Normal, the inertia response is terminated. If the speed of the wind turbine and the grid status are abnormal, the process returns to step S1, where the converter re-detects the grid frequency change rate, and the wind turbine main control cooperates with the converter to control the pitch angle of the variable pitch system to control the active power. The present invention utilizes the characteristics of the converter's fast torque control response speed and the variable pitch system's slow pitch angle control response speed. When the grid frequency changes, the converter first controls the torque to quickly enter the inertia response, and then cooperates with the wind turbine main control to follow the change in the pitch angle to control the pitch angle of the variable pitch system, thereby achieving the effect of rapid response and active power control.

[0037] The following is a detailed description of the implementation details of the inertia response control method for wind turbines in this embodiment. The following content is only for the convenience of understanding the implementation details and is not necessary for the implementation of this solution. The specific process of this embodiment is as follows: Figure 1 shown.

[0038] See Figure 1 and Figure 2 A method for controlling inertia response of a wind turbine generator system, the self-test method comprising:

[0039] Step S1, when the wind turbine generator system is operating normally, the converter detects the rate of change of the grid frequency;

[0040] Specifically, during the normal operation of the wind turbine, the converter detects the rate of change of the wind turbine grid frequency in real time and accurately. The change of the wind turbine grid frequency can show key information about the power supply and demand balance in the system. The wind turbine must participate in the stable operation of the grid, and the converter needs to monitor closely to stabilize the system frequency.

[0041] The converter is equipped with high-precision frequency detection circuits and advanced signal processing algorithms. It samples the grid frequency at extremely short intervals and quickly calculates the rate of change of the grid frequency by comparing the frequency values ​​at adjacent sampling points. This rate of change intuitively reflects whether the grid frequency is accelerating, stable, or decreasing, as well as the rate of change. This provides accurate real-time data for wind turbines to implement inertia response control measures, enabling them to accurately adjust their output power, helping the grid frequency return to near its rated value and maintaining stable and reliable operation of the power system.

[0042] Step S2: Based on the grid frequency, determine whether it exceeds the upper and lower limits of the grid frequency change rate. If it exceeds the upper and lower limits, enter the inertia response mode. If it does not exceed the upper and lower limits, the wind turbine generator system remains in operation.

[0043] Specifically, the wind turbine converter continuously monitors the real-time value of the grid frequency, compares and analyzes the current wind turbine grid frequency with the rated frequency during normal grid operation, and then calculates the actual change rate of the grid frequency.

[0044] The wind turbine system compares the actual rate of change of the grid frequency with pre-set upper and lower thresholds. These thresholds are determined based on a combination of factors, including the wind turbine's grid operating characteristics, the wind farm's access capacity, and the wind turbine's own control capabilities. When the calculated rate of change of the grid frequency exceeds the pre-set thresholds, it indicates that the grid's operating status has deviated from the normal range, potentially indicating a power supply and demand imbalance or other abnormal conditions. When the grid frequency exceeds the upper and lower limits, inertia response is initiated. When the rate of change of the grid frequency does not exceed the pre-set thresholds, the wind turbine maintains normal operation.

[0045] As an example, based on whether the active power of the wind farm is greater than 20% of the rated active power of the wind farm, the converter determines whether it exceeds the limit range of the grid frequency change rate, and enters the inertia response mode of the wind turbine generator when it exceeds the limit range.

[0046] Wind turbines use inertia response control methods to respond to abnormal changes in grid frequency, helping the grid to return to a stable operating state and ensuring the safe and reliable operation of the power system, while also ensuring the normal operation of the wind turbines themselves and other grid-connected equipment.

[0047] Step S3: When the grid frequency change rate exceeds the upper and lower limits of the change rate, the wind turbine main control system of the wind turbine enters the inertia response mode;

[0048] When the grid frequency change rate exceeds the upper and lower limits of the change rate, the converter activates the inertia response function, calculates the inertia response power increment based on the frequency change rate, and transmits the inertia response activation signal and the active power increment before activation to the wind turbine main control system through communication.

[0049] The functional relationship between the inertia response power increment and the frequency change rate is as follows:

[0050]

[0051] where ΔP t Indicates the change in active power of the wind farm, P t is the active power of the wind farm, f represents the frequency of the wind farm grid connection point, f N is the rated frequency of the power system, Δf represents the frequency deviation of the power system, T J is the equivalent inertia time constant of the wind farm, t is the time;

[0052] When the wind turbine main control system enters the inertia response mode, the active power increment is added to the power loop in the pitch control loop to calculate the pitch angle change of the pitch system. The proportional integral algorithm of the power loop is as follows:

[0053] Δβ=k p ΔP+k i ∫ΔPdt

[0054] Among them, k i is the proportionality coefficient, k p is the integral coefficient, ΔP represents the power change of the inertia response control, and Δβ is the pitch angle change of the pitch system;

[0055] See Figure 2 The generator target speed and generator speed feedback are used as the speed loop. The speed loop in the pitch control loop is proportionally integrated to calculate the pitch angle change of the pitch system as Δβ1. The unit target power is subtracted from the converter inertia response power increment to obtain a value, which is then subtracted from the active power feedback to obtain a power deviation signal. The active power increment of the main control system is superimposed on the power loop in the pitch control loop of the pitch system. After proportional integration, the pitch angle change of the pitch system is calculated as Δβ2. After superposition calculation of Δβ1 and Δβ2, the pitch angle change of the pitch system is Δβ.

[0056] During the inertia response period, the generator speed increment is superimposed on the speed loop in the converter control loop to keep the generator speed stable and the unit from disconnecting from the grid and overspeeding; and during the inertia response period, the converter no longer responds to the torque command of the main control.

[0057] The wind turbine main control system enters the inertia response mode, superimposes the active power increment on the power loop in the pitch control loop, calculates the pitch angle change of the pitch system, adjusts the pitch angle, and cooperates with the converter to perform inertia power response.

[0058] The inertia response time is set, and finally the inertia response end signal is detected and transmitted from the converter to the wind turbine main control system through the communication protocol, and the inertia response ends.

[0059] Step S4, determining whether the speed of the wind turbine and the grid status are normal during the inertia response period. If the speed of the wind turbine and the grid status are normal, the inertia response is terminated. If the speed of the wind turbine and the grid status are abnormal, the process returns to step S1 and the converter re-detects the grid frequency change rate.

[0060] Specifically, it is determined whether the generator speed remains stable during the inertia response period, whether the unit is not disconnected from the grid and does not overspeed; and whether the converter no longer responds to the torque command of the main control during the inertia response period;

[0061] During the inertia response period, the operating state of the wind turbine has changed compared to normal operation. The generator speed will fluctuate due to dynamic processes such as inertia release or recovery. Therefore, it is necessary to monitor the generator speed and compare the short-term speed change amplitude and long-term trend in real time to determine whether it is within the allowable stable fluctuation range and thus determine whether the generator speed is stable. If it is not stable, it is necessary to re-check the grid frequency change rate and then adjust it again through inertia response.

[0062] If the speed fluctuation of the wind turbine is large, it cannot be maintained stable, which will not only affect the power generation efficiency and operational stability of the wind turbine itself, but may also have an adverse impact on the quality of grid-connected power, thereby affecting the stable operation of the entire power grid. Therefore, it is necessary to strictly monitor the speed fluctuation of the wind turbine.

[0063] While ensuring a stable wind turbine speed, the inertia response period must also ensure the turbine does not disconnect from the grid or overspeed. When a wind turbine participates in grid inertia regulation, the grid's frequency and voltage fluctuate. The wind turbine's converter and control system are unable to handle these fluctuations, resulting in a disconnection between the turbine and the grid, effectively disconnecting the turbine. A wind turbine disconnection disrupts the inertia response, depriving the grid of support. This can also cause grid failures to expand, impacting the normal operation of other grid-connected equipment. Therefore, it's necessary to monitor both the wind turbine speed and the grid status to avoid situations that could lead to equipment failure.

[0064] During the inertia response phase, the converter no longer responds to torque commands from the master control. Under normal operation, the wind turbine's master control system sends torque commands to the converter based on factors such as wind speed and power setpoint. The converter adjusts the generator's torque output based on these commands to achieve maximum power capture or operate according to a preset power curve. However, during the inertia response phase, to ensure timely, flexible, and independent adjustment of the generator's torque output based on grid frequency changes and to quickly release or absorb inertia, the converter temporarily blocks the master control's torque commands and instead independently determines the magnitude and trend of torque output based on grid frequency deviation and a pre-set inertia response control strategy. This switching of the converter's control mode ensures that the inertia response is effective and does not interfere with normal turbine operation. After the inertia response ends, the converter re-receives and responds to the master control's torque commands, restoring the wind turbine to normal operating control mode.

[0065] The first embodiment of the present invention provides an inertia response control method for a wind turbine generator set, comprising: when the wind turbine generator set is operating normally, the converter detects the rate of change of the grid frequency, and determines whether it exceeds the upper and lower limits of the grid frequency change rate according to the grid frequency; if it exceeds the upper and lower limits of the grid frequency, the wind turbine generator set enters the inertia response mode; if it does not exceed the upper and lower limits of the grid frequency, the wind turbine generator set main control system enters the inertia response mode; determines whether the speed of the wind turbine generator set and the grid status are normal during the inertia response period; if the speed of the wind turbine generator set and the grid status are normal, the wind turbine generator set main control system enters the inertia response mode ... If it is normal, the inertia response is ended. If the speed of the wind turbine and the grid status are abnormal, the converter returns to step S1 to re-detect the grid frequency change rate, and the wind turbine main control cooperates with the converter to control the pitch angle of the variable pitch system to control the active power. In the present invention, the characteristics of the converter controlling the torque with fast response speed and the variable pitch system controlling the pitch angle with slow response speed are utilized. When the grid frequency changes, the converter first controls the torque to quickly enter the inertia response, and then cooperates with the wind turbine main control to follow the change in the pitch angle to control the pitch angle of the variable pitch system, thereby achieving the effect of fast response and control of active power.

[0066] The steps of the various methods above are divided only for the purpose of clear description. During implementation, they can be combined into one step or some steps can be split and decomposed into multiple steps. As long as they include the same logical relationship, they are all within the scope of protection of this patent. Adding insignificant modifications or introducing insignificant designs to the algorithm or process without changing the core design of the algorithm and process are all within the scope of protection of this patent.

[0067] The second embodiment of the present invention relates to a network side server, such as Figure 3As shown, it includes at least one processor 302; and a memory 301 that is communicatively connected to the at least one processor 302; wherein the memory 301 stores instructions that can be executed by the at least one processor 302, and the instructions are executed by the at least one processor 302 to enable the at least one processor 302 to execute the above-mentioned data processing method.

[0068] Memory 301 and processor 302 are connected using a bus. The bus can include any number of interconnected buses and bridges, connecting various circuits of one or more processors 302 and memory 301. The bus can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits. These are all well known in the art and are therefore not described further herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be a single component or multiple components, such as multiple receivers and transmitters, providing a unit for communicating with various other devices over a transmission medium. Data processed by processor 302 is transmitted over a wireless medium via an antenna. Furthermore, the antenna receives data and transmits it to processor 302.

[0069] The processor 302 is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. The memory 301 can be used to store data used by the processor 302 when performing operations.

[0070] A third embodiment of the present invention relates to a computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the inertia response control method of the wind turbine generator system according to the first embodiment is implemented.

[0071] That is, those skilled in the art will understand that all or part of the steps in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a program, which is stored in a storage medium and includes a number of instructions for causing a device (which may be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, etc., various media that can store program code.

[0072] The above is only an embodiment of the present invention. Common knowledge such as the known specific structures and characteristics in the scheme is not described in detail here. Ordinary technicians in the field are aware of all common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all existing technologies in the field, and have the ability to apply conventional experimental means before that date. Ordinary technicians in the field can improve and implement this scheme in combination with their own abilities under the inspiration given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for controlling inertia response of a wind turbine generator system, characterized in that: include: Step S1, when the wind turbine generator system is operating normally, the converter detects the rate of change of the grid frequency; Step S2: judging whether the grid frequency exceeds the upper and lower limits of the grid frequency change rate according to the grid frequency. If the grid frequency exceeds the upper and lower limits, the inertia response is initiated. If the grid frequency does not exceed the upper and lower limits, the wind turbine remains in operation. Step S3: When the grid frequency change rate exceeds the upper and lower limits of the change rate, the wind turbine main control system of the wind turbine enters the inertia response mode; When the grid frequency change rate exceeds the upper and lower limits, the converter activates the inertia response function. The converter calculates the inertia response power increment based on the frequency change rate and transmits the inertia response activation signal and the active power increment before activation to the wind turbine main control system via communication. The wind turbine main control system then enters the inertia response mode, superimposes the active power increment on the power loop of the pitch control loop, calculates the pitch angle change of the pitch system, adjusts the pitch angle, and cooperates with the converter to perform inertia power response. Step S4, determining whether the speed of the wind turbine and the grid status are normal during the inertia response period. If the speed of the wind turbine and the grid status are normal, the inertia response is terminated. If the speed of the wind turbine and the grid status are abnormal, the process returns to step S1 and the converter re-detects the grid frequency change rate.

2. The inertia response control method for a wind turbine generator system according to claim 1, characterized in that: In S1, when the wind turbine is operating normally, the converter detects the rate of change of the grid frequency, including: during the normal operation of the wind turbine, the converter samples the grid frequency, and quickly calculates the rate of change of the grid frequency by comparing the frequency values ​​of adjacent sampling points.

3. The inertia response control method for a wind turbine generator system according to claim 1, characterized in that: In S2, determining whether the upper and lower limits of the grid frequency change rate are exceeded includes: the wind turbine system compares the actual grid frequency change rate with preset upper and lower limit thresholds of the grid frequency change rate.

4. The inertia response control method for a wind turbine generator system according to claim 3, characterized in that: The preset upper and lower thresholds are determined based on the operating characteristics of the wind turbine grid, the access capacity of the wind farm, and the control capability of the wind turbine.

5. The inertia response control method for a wind turbine generator system according to claim 1, characterized in that: In S3, when the grid frequency change rate exceeds the upper and lower limits of the change rate, the wind turbine main control system of the wind turbine enters the inertia response mode, including: when the grid frequency change rate exceeds the upper and lower limits of the change rate, the converter activates the inertia response function, the converter calculates the inertia response power increment according to the frequency change rate, and transmits the inertia response activation signal and the active power increment before activation to the wind turbine main control system through communication.

6. The inertia response control method for a wind turbine generator system according to claim 5, characterized in that: The functional relationship between the inertia response power increment and the frequency change rate is as follows: where ΔP t Indicates the change in active power of the wind farm, P t is the active power of the wind farm, f represents the frequency of the wind farm grid connection point, f N is the rated frequency of the power system, Δf represents the frequency deviation of the power system, T J is the equivalent inertia time constant of the wind farm, and t is the time.

7. The inertia response control method for a wind turbine generator system according to claim 6, characterized in that: When the wind turbine main control system enters the inertia response mode, the active power increment is superimposed on the power loop in the pitch control loop to calculate the pitch angle change of the pitch system.

8. The inertia response control method for a wind turbine generator system according to claim 7, characterized in that: The proportional-integral algorithm of the power loop is as follows: Δβ=k p ΔP+k i ∫ΔPdt Among them, k i is the proportionality coefficient, k p is the integral coefficient, ΔP represents the power change of the inertia response control, and Δβ is the pitch angle change of the pitch system.

9. A network side server, characterized in that: include: at least one processor; as well as, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor. The instructions are executed by the at least one processor to enable the at least one processor to execute the inertia response control method for a wind turbine according to any one of claims 1 to 8.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the inertia response control method for a wind turbine set according to any one of claims 1 to 8 is implemented.

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