System for eliminating inrush current of fan

Abstract

The invention discloses a system for eliminating inrush current of a fan, particularly relates to the field of data analysis, and comprises a monitoring time division module, a fan data acquisition module, a fan data analysis module, a comprehensive analysis module, an abnormality judgment module and an inrush current elimination module. By designing the system for eliminating the inrush current of the fan, the problem of the inrush current caused by closing of a high-voltage air switch during operation of the fan is effectively solved, the inrush current phenomenon is accurately judged and an elimination mechanism is triggered by monitoring, collecting and analyzing operation data of the fan, an electrical system is protected from being impacted by transient high current, and the service life of the fan is prolonged. The operation stability and reliability of the fan are improved, the system failure rate and the maintenance cost are reduced, and powerful support is provided for healthy development of the wind power industry.

Description

Technical Field

[0001] The present invention relates to the technical field of data analysis, and more specifically, to a system for eliminating wind turbine inrush current. Background Art

[0002] During the operation of the wind turbine, the operation of the high-voltage circuit breaker in the tower base converter cabinet is the main cause of the inrush current phenomenon. When the high-voltage circuit breaker disconnects the power supply of the converter auxiliary transformer and then closes the switch to supply power again, the transient impact current in the circuit far exceeds the steady-state working current. This phenomenon will cause damage to the input or output terminals in the cabin control cabinet, leading to system failure or shutdown.

[0003] When the high-voltage circuit breaker disconnects the power supply of the converter auxiliary transformer and then closes the circuit to supply power again, the transient impact current in the circuit far exceeds the steady-state operating current, which usually generates a surge current of up to 10 times or even more. This instantaneous current shock not only poses a threat to the electrical system, but may also cause other key components in the system, such as the second high-voltage circuit breaker of the cabin control power auxiliary transformer connected in parallel with the high-voltage circuit breaker on the 690V bus, to suffer similar surge current shocks. This phenomenon can cause damage to the input or output terminals in the cabin control cabinet, leading to system failure or shutdown. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a system for eliminating wind turbine inrush current, and solves the problems raised in the above-mentioned background technology through the following scheme.

[0005] To achieve the above object, the present invention provides the following technical solution: a system for eliminating wind turbine inrush current, comprising:

[0006] Time division module: used to determine the operation data of the target fan as the target data area, and divide the target data area into various sub-data areas by equal time division, which are marked as 1, 2...n in sequence;

[0007] Wind turbine data acquisition module: used to collect the variable current transient response data, surge potential impact data and subsequent chain reaction data of each sub-data area, and transmit the collected data to the wind turbine data analysis module;

[0008] Wind turbine data analysis module: including variable flow transient response data analysis unit, surge potential impact data analysis unit and subsequent chain reaction data analysis unit, used to analyze the data transmitted by the wind turbine data acquisition module and transmit the analysis results to the comprehensive analysis module;

[0009] Comprehensive analysis module: used to establish a comprehensive analysis model, import the data transmitted by the motor data analysis module into the comprehensive analysis model to calculate the comprehensive abnormality index of the target data area, and transmit it to the abnormality judgment module;

[0010] Abnormality judgment module: used to establish a preset value of the comprehensive abnormality index, judge the comprehensive abnormality index of the target data area according to the preset value of the comprehensive abnormality index, and transmit the judgment result to the surge elimination module;

[0011] Surge elimination module: used to eliminate surge in the target fan.

[0012] Preferably, the current conversion transient response data include the voltage sag rate value of the converter auxiliary transformer, the inrush temperature rise value of the input terminal, the inrush rise duration value of the high-voltage air-breaker closing, and the high-voltage air-breaker inrush peak value compared to the steady-state current multiple value of the cabin control power auxiliary transformer, which are marked as Vd, Vt, Vr and Vo respectively, and the inrush potential impact data include the residual magnetic flux value of the converter auxiliary transformer, the output terminal inrush electromagnetic interference intensity value, the main high-voltage air-breaker closing instantaneous electromagnetic radiation energy value that causes the inrush phenomenon, and the high-voltage air-breaker inrush impact mechanical vibration amplitude value of the cabin control power auxiliary transformer, which are marked as Rm, Rg, Rc and Rh respectively, and the subsequent chain reaction data include the temperature change value of the converter cabinet of the main high-voltage air-breaker breaking and closing interval that causes the inrush phenomenon, the change value of the input terminal inrush insulation resistance, the main high-voltage air-breaker closing that causes the inrush phenomenon The communication interference frequency value and the high-voltage air-breaker inrush contact wear value of the cabin control power auxiliary transformer are marked as Te, Tc, Tf and Tv respectively.

[0013] Preferably, the data acquisition module uses a high-precision voltage sensor to monitor the voltage changes at both ends of the converter auxiliary transformer, records and calculates the voltage drop amplitude per unit time through the data acquisition system, installs a miniature temperature sensor at the module input terminal, records the temperature changes before and after the high-voltage circuit breaker is disconnected and then closed again to supply power, monitors the current changes at the moment of closing the high-voltage circuit breaker through a current transformer, uses data acquisition equipment to record the time span of the inrush current from the start to the peak value, measures the current of the high-voltage circuit breaker in the steady state and inrush state respectively, and calculates the ratio of the two.

[0014] Preferably, the data acquisition module uses a fluxmeter to measure the magnetic flux of the converter auxiliary transformer after the main high-voltage circuit breaker that causes the inrush current phenomenon is disconnected, an electromagnetic interference detector is arranged near the module output terminal to record the electromagnetic interference intensity when the inrush current is generated, an electromagnetic radiation measuring instrument is used to measure the electromagnetic radiation energy generated by the high-voltage circuit breaker at the moment of closing, and a vibration sensor is installed on the high-voltage circuit breaker to monitor the mechanical vibration amplitude during the inrush current impact.

[0015] Preferably, the data acquisition module arranges a temperature sensor in the converter cabinet, records the temperature when the high-voltage circuit breaker is opened and closed, calculates the temperature difference, uses an insulation resistance tester to measure the insulation resistance of the module input terminals before and after the surge current, sets a frequency monitoring device near the communication line to monitor the interference frequency generated to the communication line when the high-voltage circuit breaker is closed, installs a wear measuring device at the contact of the high-voltage circuit breaker, and measures the wear of the contact after a period of surge current impact.

[0016] Preferably, the variable flow transient response data analysis unit is used to establish a variable flow transient response data analysis model, import the variable flow transient response data transmitted by the fan data acquisition module into the variable flow transient response data analysis model, and calculate the variable flow transient response evaluation value of each sub-data area, which is specifically expressed as:

[0017]

[0018] EV i represents the transient response evaluation value of the variable current in the ith sub-data area, Vd i Indicates the voltage drop rate value of the auxiliary transformer of the converter in the ith sub-data area, Vt i Indicates the input terminal inrush current temperature rise value of the ith sub-data area, Vr i Represents the duration of the high-voltage circuit breaker closing surge current rise in the ith sub-data area, Vo i Indicates the peak value of the high-voltage circuit breaker inrush current of the cabin control power auxiliary transformer in the i-th sub-data area compared with the steady-state current multiple, μ 1 Indicates other influencing factors of the variable current transient response evaluation value.

[0019] Preferably, the surge potential impact data analysis unit is used to establish a surge potential impact data analysis model, import the surge potential impact data transmitted by the fan data acquisition module into the surge potential impact data analysis model, and calculate the surge potential impact assessment value of each sub-data area, which is specifically expressed as:

[0020]

[0021] ER i Rm represents the potential impact assessment value of surge flow in the ith sub-data area, i Represents the residual magnetic flux value of the auxiliary transformer of the converter in the ith sub-data area, Rg i Indicates the output terminal surge current electromagnetic interference intensity value of the i-th sub-data area, Rc i Indicates the electromagnetic radiation energy value of the main high-voltage circuit breaker closing instant that causes the inrush current phenomenon in the i-th sub-data area, Rh i Indicates the mechanical vibration amplitude value of the high-voltage circuit breaker inrush current impact of the auxiliary transformer of the cabin control power supply in the i-th sub-data area, μ2 Other factors affecting the potential impact assessment value of surge flow.

[0022] Preferably, the subsequent chain reaction data analysis unit is used to establish a subsequent chain reaction data analysis model, import the subsequent chain reaction data transmitted by the wind turbine data acquisition module into the subsequent chain reaction data analysis model, and calculate the subsequent chain reaction evaluation value of each sub-data area, which is specifically expressed as:

[0023]

[0024] ET i represents the subsequent chain reaction evaluation value of the ith sub-data area, Te i Indicates the temperature change value of the converter cabinet of the main high-voltage circuit breaker that causes the inrush current phenomenon in the ith sub-data area, Tc i Indicates the change value of the input terminal inrush insulation resistance of the ith sub-data area, Tf i Indicates the frequency value of the main high-voltage circuit breaker closing interference to communication that causes the inrush current phenomenon in the ith sub-data area, Tv i represents the wear value of the high-voltage circuit breaker inrush current contact of the cabin control power auxiliary transformer in the i-th sub-data area, μ 3 Represents other influencing factors of the subsequent chain reaction evaluation value.

[0025] Preferably, the comprehensive analysis model is specifically expressed as: η represents the comprehensive abnormality index of the target data area, EV i represents the transient response evaluation value of the i-th sub-data area, ER i represents the potential impact assessment value of surge flow in the ith sub-data area, ET i represents the subsequent chain reaction evaluation value of the ith sub-data area, and λ represents other influencing factors of the comprehensive anomaly index.

[0026] Preferably, the preset value of the comprehensive abnormality index is marked as η Def , when η Def >η, it means that there is no abnormality in the target fan, and the collection and analysis of fan data is maintained. Def When <η, it indicates that the target fan is abnormal, the target fan is marked as abnormal and transmitted to the surge elimination module.

[0027] Preferably, the inrush current elimination module connects an NTC thermistor in series in the power supply circuit. When the system is powered on again, the initial high resistance of the thermistor can effectively limit the inrush of transient current and suppress the current peak caused by the inrush current, thereby protecting electronic components from the impact of transient high current. Once the circuit enters the steady-state working stage, the thermistor reduces its resistance due to its own heat, allowing the circuit to work normally.

[0028] Technical effects and advantages of the present invention:

[0029] The present invention divides the operating data of the target fan by time through the monitoring time division module, so that the data analysis is more refined and orderly. This method helps to capture the characteristics of the surge phenomenon in different time periods, and provides a solid foundation for subsequent data analysis and processing. At the same time, modular time division improves the flexibility and scalability of the system; the fan data acquisition module collects key data in the fan operation process, including variable flow transient response data, surge potential impact data and subsequent chain reaction data. These data cover multiple aspects of the surge phenomenon and provide a rich data source for accurate analysis and prediction of the surge phenomenon. Through high-precision sensors and data acquisition systems, the accuracy and real-time nature of the data are ensured, providing strong support for subsequent data analysis; the fan data analysis module conducts in-depth analysis and processing of the collected data to reveal the inherent laws and characteristics of the surge phenomenon, which helps the system to more accurately identify the surge phenomenon and provide a scientific basis for subsequent comprehensive evaluation and abnormal judgment; a comprehensive analysis model is established through the comprehensive analysis module to integrate data from multiple aspects The comprehensive abnormality index of the target data area is calculated by integrating them. This method comprehensively considers multiple aspects of the inrush phenomenon and improves the accuracy and reliability of abnormal judgment. At the same time, the comprehensive analysis module is also flexible and scalable, and can adjust the analysis model and parameters according to different needs; the abnormal judgment module can accurately determine whether the fan is in an abnormal state in real time. Once an abnormality is detected, the system can respond quickly, mark the target fan as an abnormal state, and trigger corresponding processing measures. This timely and accurate abnormal judgment mechanism helps to reduce system downtime and maintenance costs, and improve the operating efficiency and stability of the fan; the inrush current elimination module connects the NTC thermistor in series in the power supply circuit. The inrush current elimination module can effectively limit the inrush of transient current when the system is powered on again, and suppress the current peak caused by the inrush current. This method not only protects the electronic components from the impact of instantaneous high current, but also ensures the normal operation of the system after entering the steady-state working stage. In addition, the low resistance state of the thermistor has little effect on the system, ensuring the overall performance and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] refer to Figure 1 A system for eliminating wind turbine inrush current is shown, comprising a monitoring time division module, a wind turbine data acquisition module, a wind turbine data analysis module, a comprehensive analysis module, an abnormality judgment module and an inrush current elimination module.

[0033] The monitoring time division module is used to determine the operating data of the target wind turbine as a target data area, and divide the target data area into various sub-data areas by equal time division, which are marked as 1, 2...n in sequence.

[0034] The wind turbine data acquisition module is used to collect the variable current transient response data, the surge potential impact data and the subsequent chain reaction data of each sub-data area, and transmit the collected data to the wind turbine data analysis module.

[0035] The transient response data of the converter include the voltage sag rate value of the converter auxiliary transformer, the inrush temperature rise value of the input terminal, the inrush rise duration value of the high-voltage air-breaker closing, and the high-voltage air-breaker inrush peak value compared to the steady-state current multiple value of the cabin control power auxiliary transformer, which are marked as Vd, Vt, Vr and Vo respectively. The potential impact data of the inrush include the residual magnetic flux value of the converter auxiliary transformer, the electromagnetic interference intensity value of the output terminal inrush current, the instantaneous electromagnetic radiation energy value of the main high-voltage air-breaker closing that causes the inrush current phenomenon, and the mechanical vibration amplitude value of the high-voltage air-breaker inrush current impact of the cabin control power auxiliary transformer, which are marked as Rm, Rg, Rc and Rh respectively. The subsequent chain reaction data include the temperature change value of the converter cabinet of the main high-voltage air-breaker breaking and closing interval that causes the inrush current phenomenon, the change value of the input terminal inrush current insulation resistance, the frequency value of the main high-voltage air-breaker closing that causes the inrush current phenomenon to communication interference, and the wear value of the high-voltage air-breaker inrush current contact of the cabin control power auxiliary transformer, which are marked as Te, Tc, Tf and Tv respectively.

[0036] The data acquisition module uses a high-precision voltage sensor to monitor the voltage changes at both ends of the converter auxiliary transformer, records and calculates the voltage drop amplitude per unit time through the data acquisition system, installs a miniature temperature sensor at the module input terminal, records the temperature changes before and after the high-voltage circuit breaker is disconnected and then closed again to supply power, monitors the current changes at the moment of closing the high-voltage circuit breaker through the current transformer, uses the data acquisition equipment to record the time span of the inrush current from the start to the peak value, measures the current size of the high-voltage circuit breaker in the steady state and inrush state respectively, and calculates the ratio of the two.

[0037] The data acquisition module uses a fluxmeter to measure the magnetic flux of the converter auxiliary transformer after the main high-voltage circuit breaker that causes the inrush current phenomenon is disconnected, an electromagnetic interference detector is set near the module output terminal to record the electromagnetic interference intensity when the inrush current is generated, and an electromagnetic radiation measuring instrument is used to measure the electromagnetic radiation energy generated at the moment of closing the high-voltage circuit breaker. A vibration sensor is installed on the high-voltage circuit breaker to monitor the mechanical vibration amplitude during the inrush current impact.

[0038] The data acquisition module arranges a temperature sensor in the converter cabinet, records the temperature when the high-voltage circuit breaker is opened and closed, calculates the temperature difference, uses an insulation resistance tester to measure the insulation resistance of the module input terminals before and after the inrush current, sets a frequency monitoring device near the communication line to monitor the interference frequency generated by the high-voltage circuit breaker to the communication line when the high-voltage circuit breaker is closed, and installs a wear measuring device at the contact of the high-voltage circuit breaker to measure the wear of the contact after a period of inrush current impact.

[0039] The wind turbine data analysis module includes a variable flow transient response data analysis unit, a surge potential impact data analysis unit and a subsequent chain reaction data analysis unit, which are used to analyze the data transmitted by the wind turbine data acquisition module and transmit the analysis results to the comprehensive analysis module.

[0040] The variable flow transient response data analysis unit is used to establish a variable flow transient response data analysis model, import the variable flow transient response data transmitted by the fan data acquisition module into the variable flow transient response data analysis model, and calculate the variable flow transient response evaluation value of each sub-data area, which is specifically expressed as:

[0041]

[0042] EV i represents the transient response evaluation value of the variable current in the ith sub-data area, Vd i Indicates the voltage drop rate value of the auxiliary transformer of the converter in the ith sub-data area, Vt i Indicates the input terminal inrush current temperature rise value of the ith sub-data area, Vr i Represents the duration of the high-voltage circuit breaker closing surge current rise in the ith sub-data area, Vo i Indicates the peak value of the high-voltage circuit breaker inrush current of the cabin control power auxiliary transformer in the i-th sub-data area compared with the steady-state current multiple, μ 1 Indicates other influencing factors of the variable current transient response evaluation value.

[0043] The surge potential impact data analysis unit is used to establish a surge potential impact data analysis model, import the surge potential impact data transmitted by the fan data acquisition module into the surge potential impact data analysis model, and calculate the surge potential impact assessment value of each sub-data area, which is specifically expressed as:

[0044]

[0045] ER i Rm represents the potential impact assessment value of surge flow in the ith sub-data area, i Represents the residual magnetic flux value of the auxiliary transformer of the converter in the ith sub-data area, Rg i Indicates the output terminal surge current electromagnetic interference intensity value of the i-th sub-data area, Rc i Indicates the electromagnetic radiation energy value of the main high-voltage circuit breaker closing instant that causes the inrush current phenomenon in the i-th sub-data area, Rh i Indicates the mechanical vibration amplitude value of the high-voltage circuit breaker inrush current impact of the auxiliary transformer of the cabin control power supply in the i-th sub-data area, μ 2 Other factors affecting the potential impact assessment value of surge flow.

[0046] The subsequent chain reaction data analysis unit is used to establish a subsequent chain reaction data analysis model, import the subsequent chain reaction data transmitted by the wind turbine data acquisition module into the subsequent chain reaction data analysis model, and calculate the subsequent chain reaction evaluation value of each sub-data area, which is specifically expressed as:

[0047]

[0048] ET i represents the subsequent chain reaction evaluation value of the ith sub-data area, Te i Indicates the temperature change value of the converter cabinet of the main high-voltage circuit breaker that causes the inrush current phenomenon in the ith sub-data area, Tc i Indicates the change value of the input terminal inrush insulation resistance of the ith sub-data area, Tf i Indicates the frequency value of the main high-voltage circuit breaker closing interference to communication that causes the inrush current phenomenon in the ith sub-data area, Tv i represents the wear value of the high-voltage circuit breaker inrush current contact of the cabin control power auxiliary transformer in the i-th sub-data area, μ 3 Represents other influencing factors of the subsequent chain reaction evaluation value.

[0049] The comprehensive analysis module is used to establish a comprehensive analysis model, import the data transmitted by the motor data analysis module into the comprehensive analysis model to calculate the comprehensive abnormality index of the target data area, and transmit it to the abnormality judgment module.

[0050] The comprehensive analysis model is specifically expressed as: η represents the comprehensive abnormality index of the target data area, EV i represents the transient response evaluation value of the i-th sub-data area, ER irepresents the potential impact assessment value of surge flow in the ith sub-data area, ET i represents the subsequent chain reaction evaluation value of the ith sub-data area, and λ represents other influencing factors of the comprehensive anomaly index.

[0051] The abnormality judgment module is used to establish a preset value of the comprehensive abnormality index, judge the comprehensive abnormality index of the target data area according to the preset value of the comprehensive abnormality index, and transmit the judgment result to the surge elimination module.

[0052] The preset value of the comprehensive abnormality index is marked as η Def , when η Def >η, it means that there is no abnormality in the target fan, and the collection and analysis of fan data is maintained. Def When <η, it indicates that the target fan is abnormal, the target fan is marked as abnormal and transmitted to the surge elimination module.

[0053] The inrush current elimination module is used for eliminating inrush current in the target wind turbine.

[0054] The inrush current elimination module connects the NTC thermistor in series in the power supply circuit. When the system is powered on again, the initial high resistance of the thermistor can effectively limit the inrush of transient current and suppress the current peak caused by the inrush current, thereby protecting the electronic components from the impact of transient high current. Once the circuit enters the steady-state working stage, the thermistor reduces its resistance due to its own heat, so that the circuit can work normally, and its low resistance state has little impact on the system.

[0055] The present invention divides the operating data of the target fan by time through the monitoring time division module, so that the data analysis is more refined and orderly. This method helps to capture the characteristics of the surge phenomenon in different time periods, and provides a solid foundation for subsequent data analysis and processing. At the same time, modular time division improves the flexibility and scalability of the system; the fan data acquisition module collects key data in the fan operation process, including variable flow transient response data, surge potential impact data and subsequent chain reaction data. These data cover multiple aspects of the surge phenomenon and provide a rich data source for accurate analysis and prediction of the surge phenomenon. Through high-precision sensors and data acquisition systems, the accuracy and real-time nature of the data are ensured, providing strong support for subsequent data analysis; the fan data analysis module conducts in-depth analysis and processing of the collected data to reveal the inherent laws and characteristics of the surge phenomenon, which helps the system to more accurately identify the surge phenomenon and provide a scientific basis for subsequent comprehensive evaluation and abnormal judgment; a comprehensive analysis model is established through the comprehensive analysis module to integrate data from multiple aspects The comprehensive abnormality index of the target data area is calculated by integrating them. This method comprehensively considers multiple aspects of the inrush phenomenon and improves the accuracy and reliability of abnormal judgment. At the same time, the comprehensive analysis module is also flexible and scalable, and can adjust the analysis model and parameters according to different needs; the abnormal judgment module can accurately determine whether the fan is in an abnormal state in real time. Once an abnormality is detected, the system can respond quickly, mark the target fan as an abnormal state, and trigger corresponding processing measures. This timely and accurate abnormal judgment mechanism helps to reduce system downtime and maintenance costs, and improve the operating efficiency and stability of the fan; the inrush current elimination module connects the NTC thermistor in series in the power supply circuit. The inrush current elimination module can effectively limit the inrush of transient current when the system is powered on again, and suppress the current peak caused by the inrush current. This method not only protects the electronic components from the impact of instantaneous high current, but also ensures the normal operation of the system after entering the steady-state working stage. In addition, the low resistance state of the thermistor has little effect on the system, ensuring the overall performance and stability of the system.

[0056] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0057] Finally: 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A system for eliminating inrush current of a fan, characterized in that: include: Time division module: used to determine the operation data of the target fan as the target data area, and divide the target data area into various sub-data areas by equal time division, which are marked as 1, 2...n in sequence; Wind turbine data acquisition module: used to collect the variable current transient response data, surge potential impact data and subsequent chain reaction data of each sub-data area, and transmit the collected data to the wind turbine data analysis module; Wind turbine data analysis module: including variable flow transient response data analysis unit, surge potential impact data analysis unit and subsequent chain reaction data analysis unit, used to analyze the data transmitted by the wind turbine data acquisition module and transmit the analysis results to the comprehensive analysis module; Comprehensive analysis module: used to establish a comprehensive analysis model, import the data transmitted by the motor data analysis module into the comprehensive analysis model to calculate the comprehensive abnormality index of the target data area, and transmit it to the abnormality judgment module; Abnormality judgment module: used to establish a preset value of the comprehensive abnormality index, judge the comprehensive abnormality index of the target data area according to the preset value of the comprehensive abnormality index, and transmit the judgment result to the surge elimination module; Surge elimination module: used to eliminate surge in the target fan.

2. A system for eliminating wind turbine inrush current according to claim 1, characterized in that: The transient response data of the converter include the voltage sag rate value of the converter auxiliary transformer, the inrush temperature rise value of the input terminal, the inrush rise duration value of the high-voltage air-breaker closing, and the high-voltage air-breaker inrush peak value compared to the steady-state current multiple value of the cabin control power auxiliary transformer, which are marked as Vd, Vt, Vr and Vo respectively. The potential impact data of the inrush include the residual magnetic flux value of the converter auxiliary transformer, the electromagnetic interference intensity value of the output terminal inrush current, the instantaneous electromagnetic radiation energy value of the main high-voltage air-breaker closing that causes the inrush current phenomenon, and the mechanical vibration amplitude value of the high-voltage air-breaker inrush current impact of the cabin control power auxiliary transformer, which are marked as Rm, Rg, Rc and Rh respectively. The subsequent chain reaction data include the temperature change value of the converter cabinet of the main high-voltage air-breaker breaking and closing interval that causes the inrush current phenomenon, the change value of the input terminal inrush current insulation resistance, the frequency value of the main high-voltage air-breaker closing that causes the inrush current phenomenon to communication interference, and the wear value of the high-voltage air-breaker inrush current contact of the cabin control power auxiliary transformer, which are marked as Te, Tc, Tf and Tv respectively.

3. A system for eliminating wind turbine inrush current according to claim 2, characterized in that: The data acquisition module uses a high-precision voltage sensor to monitor the voltage changes at both ends of the converter auxiliary transformer, records and calculates the voltage drop amplitude per unit time through the data acquisition system, installs a miniature temperature sensor at the module input terminal, records the temperature changes before and after the high-voltage circuit breaker is disconnected and then closed again to supply power, monitors the current changes at the moment of closing the high-voltage circuit breaker through the current transformer, uses the data acquisition equipment to record the time span of the inrush current from the start to the peak value, measures the current size of the high-voltage circuit breaker in the steady state and inrush state respectively, and calculates the ratio of the two.

4. A system for eliminating wind turbine inrush current according to claim 2, characterized in that: The data acquisition module uses a fluxmeter to measure the magnetic flux of the converter auxiliary transformer after the main high-voltage circuit breaker that causes the inrush current phenomenon is disconnected, an electromagnetic interference detector is set near the module output terminal to record the electromagnetic interference intensity when the inrush current is generated, and an electromagnetic radiation measuring instrument is used to measure the electromagnetic radiation energy generated at the moment of closing the high-voltage circuit breaker. A vibration sensor is installed on the high-voltage circuit breaker to monitor the mechanical vibration amplitude during the inrush current impact.

5. A system for eliminating fan inrush current according to claim 2, characterized in that: The data acquisition module arranges a temperature sensor in the converter cabinet, records the temperature when the high-voltage circuit breaker is opened and closed, calculates the temperature difference, uses an insulation resistance tester to measure the insulation resistance of the module input terminals before and after the inrush current, sets a frequency monitoring device near the communication line to monitor the interference frequency generated by the high-voltage circuit breaker to the communication line when the high-voltage circuit breaker is closed, and installs a wear measuring device at the contact of the high-voltage circuit breaker to measure the wear of the contact after a period of inrush current impact.

6. A system for eliminating wind turbine inrush current according to claim 1, characterized in that: The variable flow transient response data analysis unit is used to establish a variable flow transient response data analysis model, import the variable flow transient response data transmitted by the fan data acquisition module into the variable flow transient response data analysis model, and calculate the variable flow transient response evaluation value of each sub-data area, which is specifically expressed as: EV i represents the transient response evaluation value of the variable current in the ith sub-data area, Vd i Indicates the voltage drop rate value of the auxiliary transformer of the converter in the ith sub-data area, Vt i Indicates the input terminal inrush current temperature rise value of the ith sub-data area, Vr i Represents the duration of the high-voltage circuit breaker closing surge current rise in the ith sub-data area, Vo i represents the peak value of the high-voltage circuit breaker inrush current compared to the steady-state current multiple of the auxiliary transformer of the cabin control power supply in the i-th sub-data area, and μ1 represents other influencing factors of the transient response evaluation value of the converter.

7. A system for eliminating wind turbine inrush current according to claim 1, characterized in that: The surge potential impact data analysis unit is used to establish a surge potential impact data analysis model, import the surge potential impact data transmitted by the fan data acquisition module into the surge potential impact data analysis model, and calculate the surge potential impact assessment value of each sub-data area, which is specifically expressed as: ER i Rm represents the potential impact assessment value of surge flow in the ith sub-data area, i Represents the residual magnetic flux value of the auxiliary transformer of the converter in the ith sub-data area, Rg i Indicates the output terminal surge current electromagnetic interference intensity value of the i-th sub-data area, Rc i Indicates the electromagnetic radiation energy value of the main high-voltage circuit breaker closing instant that causes the inrush current phenomenon in the i-th sub-data area, Rh i represents the mechanical vibration amplitude value of the high-voltage circuit breaker inrush current impact on the cabin control power auxiliary transformer in the i-th sub-data area, and μ2 represents other influencing factors of the potential impact assessment value of the inrush current.

8. The system for eliminating wind turbine inrush current according to claim 1, characterized in that: The subsequent chain reaction data analysis unit is used to establish a subsequent chain reaction data analysis model, import the subsequent chain reaction data transmitted by the wind turbine data acquisition module into the subsequent chain reaction data analysis model, and calculate the subsequent chain reaction evaluation value of each sub-data area, which is specifically expressed as: ET i represents the subsequent chain reaction evaluation value of the ith sub-data area, Te i Indicates the temperature change value of the converter cabinet of the main high-voltage circuit breaker that causes the inrush current phenomenon in the ith sub-data area, Tc i Indicates the change value of the input terminal inrush current insulation resistance of the ith sub-data area, Tf i Indicates the frequency value of the main high-voltage circuit breaker closing interference to communication that causes the inrush current phenomenon in the ith sub-data area, Tv i represents the wear value of the high-voltage circuit breaker inrush contact of the cabin control power auxiliary transformer in the i-th sub-data area, and μ3 represents other influencing factors of the subsequent chain reaction evaluation value.

9. A system for eliminating wind turbine inrush current according to claim 1, characterized in that: The comprehensive analysis model is specifically expressed as: η represents the comprehensive abnormality index of the target data area, EV i represents the transient response evaluation value of the i-th sub-data area, ER i represents the potential impact assessment value of surge flow in the ith sub-data area, ET i represents the subsequent chain reaction evaluation value of the ith sub-data area, and λ represents other influencing factors of the comprehensive anomaly index.

10. A system for eliminating wind turbine inrush current according to claim 1, characterized in that: The comprehensive analysis model is specifically expressed as follows: the inrush current elimination module connects the NTC thermistor in series in the power supply circuit. When the system is powered on again, the initial high resistance of the thermistor can effectively limit the inrush of transient current and suppress the current peak caused by the inrush current, thereby protecting the electronic components from the impact of transient high current. Once the circuit enters the steady-state working stage, the thermistor reduces its resistance due to its own heat, so that the circuit can work normally.

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