New energy fan master control system improvement method and system

Abstract

The invention relates to the technical field of new energy power generation, in particular to a new energy fan master control system improvement method and system, and the method comprises the steps: collecting fault information of a new energy unit; performing electrical and program design according to the fault information; a fan unit is transformed on site according to electrical and program design; and carrying out performance test and acceptance on the transformed fan set. By improving the master control system of the new energy fan set, including upgrading the protection strategy and the control logic of the master control system, the fault probability of the set is reduced, the equipment maintenance time is shortened, the operation stability of the equipment is improved, the operation data and the state information can be monitored and analyzed in real time, and the management and the control of the operation state of the fan are enhanced. By technically improving the variable pitch system and optimizing the control logic of the variable pitch motor, frequent input of an electromagnetic brake, overcurrent of the motor and failure of a driver are avoided, the overall failure rate of the variable pitch system is reduced, the availability and the generating capacity of a unit are improved, and the electric quantity income is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of renewable energy power generation, and in particular to a method and system for improving a main control system of a renewable energy wind turbine. Background Art

[0002] The main control system and pitch system of the FC113-2000A unit of Jingcheng New Energy were designed, developed and designed by Kono Weiye, and the core technology is in the hands of Kono Weiye. Due to historical reasons, the relationship between Kono Weiye and Jingcheng New Energy has become rigid, and Kono Weiye no longer provides technical support and maintenance for Jingcheng New Energy's units. In addition, the main control, pitch system and other systems of Jingcheng units have been encrypted by Kono Weiye (the regulations are not open), which seriously restricts the operation and maintenance and normal operation of the wind farm.

[0003] By analyzing the fault information ledger of wind turbines from 2023 to the present, in addition to the damage of conventional components, faults such as generator bearing overtemperature, generator water cooling system overtemperature, converter overtemperature, and excessive tower vibration occur frequently, seriously affecting the power generation of the unit. This needs to be solved by optimizing the unit control strategy; the variable pitch system adopts a three-cabinet structure, a drive mode of inverter dragging the AC asynchronous motor, a supercapacitor as a backup power supply, and a double limit and dual encoder configuration. The structure is complex and the failure rate is high. The communication failure of the pitch system, the pitch drive failure, the pitch motor electromagnetic brake, and the motor overload failure occurred frequently. According to feedback from the wind farm, the failure of the pitch motor electromagnetic brake seriously affected the operation of the unit. This failure is highly correlated with the parameter selection and control strategy of the pitch motor. When the unit is currently in power generation operation and does not need to change the pitch, the pitch angle is maintained by putting the pitch motor electromagnetic brake into operation. During the operation of the blades, the alternating force borne by the blades is transmitted to the brakes through the bearings and the reduction gearbox, which accelerates the aging and damage of the electromagnetic brakes, and the control scheme needs to be changed. Failures such as slow pitch adjustment, pitch system following failure, and large yaw position measurement deviation are also common failures. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: to solve the problem of frequent failures of the main control system of the wind farm, to consolidate the safe production of the wind farm through joint technical transformation of the main control system and the pitch system, and thus to resolve the operational risks of the wind farm.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a method for improving a new energy wind turbine master control system, comprising: collecting fault information of new energy units; performing electrical and program design based on the fault information; modifying the wind turbine units on site based on the electrical and program design; and performing performance testing and acceptance on the modified wind turbine units.

[0007] As a preferred solution of the method for improving the main control system of a new energy wind turbine described in the present invention, the collection of fault information of the new energy unit includes collecting the number of failures of the wind turbine's pitch, current conversion, main control, and generator systems, and presenting them in the form of a bar graph.

[0008] As a preferred solution of the method for improving the main control system of a new energy wind turbine described in the present invention, the electrical and program design includes the modification and design of the main control hardware, main control system, variable pitch system and SCADA system in the original new energy wind turbine group.

[0009] As a preferred solution of the method for improving the main control system of a new energy wind turbine described in the present invention, the on-site transformation of the wind turbine group according to electrical and program design includes shutting down the wind turbine group and isolating it safely, and replacing and wiring the original electrical equipment according to the design plan.

[0010] As a preferred solution of the method for improving the main control system of a new energy wind turbine described in the present invention, the performance testing and acceptance of the modified wind turbine group includes formulating a single prototype and wind turbine group operation assessment method, and testing the wind turbine group operation parameters and the main control program functions.

[0011] As a preferred solution of the method for improving the main control system of a new energy wind turbine described in the present invention, the operating parameters of the wind turbine group include the stability and continuity of the wind turbine group during operation, and the power generation power of the wind turbine group.

[0012] As a preferred scheme of the method for improving the main control system of a new energy wind turbine described in the present invention, the main control program functions include start-up control, shutdown control, grid-connection / off-grid control, power generation operation control, yaw and cable release control, pitch control, frequency converter control, central monitoring communication, fault alarm, box transformer signal monitoring, high / low voltage ride-through, low temperature operation, and reduced power operation.

[0013] Another object of the present invention is to provide a new energy wind turbine main control system improvement system, which can transform the new energy wind turbine group by improving the main control system, thereby solving the problem of frequent failures of the wind farm main control system.

[0014] In order to solve the above technical problems, the present invention provides the following technical solutions: A new energy wind turbine main control system improvement system, characterized by comprising: a fault information collection module, an electrical program design module, a transformation implementation module and a performance test module;

[0015] The fault information collection module collects fault information of the new energy unit;

[0016] The electrical programming module performs electrical and programming design according to the fault information;

[0017] The transformation implementation module transforms the fan unit on site according to the electrical and program design;

[0018] The performance testing module performs performance testing and acceptance on the modified wind turbine unit.

[0019] A computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the above-mentioned method for improving a new energy wind turbine main control system are implemented.

[0020] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for improving a new energy wind turbine main control system.

[0021] The beneficial effects of the present invention are as follows: through the improvement of the main control system of the new energy wind turbine group, including the upgrading of the protection strategy and control logic of the main control system, the failure probability of the unit is reduced, the equipment maintenance time is reduced, the operating stability of the equipment is improved, the operating data and status information can be monitored and analyzed in real time, and the management and control of the operating status of the wind turbine are enhanced.

[0022] By making technical modifications to the variable pitch system and optimizing the control logic of the variable pitch motor, the frequent activation of the electromagnetic brake, motor overcurrent and driver failure can be avoided, thus reducing the overall failure rate of the variable pitch system, improving the unit's availability and power generation, and increasing electricity revenue.

[0023] The present invention realizes the complete independence of the main control logic and core control algorithm of the wind turbine set, which effectively promotes the pace of localization development of the electronic chip, industrial control, equipment manufacturing, and basic software industries, enhances my country's independent scientific and technological innovation capabilities, and further enhances my country's independent construction capabilities of the industrial chain and supply chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0025] Figure 1 A flowchart of a method for improving a new energy wind turbine main control system provided by an embodiment of the present invention.

[0026] Figure 2 A method for improving a new energy wind turbine main control system provided by an embodiment of the present invention is provided, and the ranking and comparison of the main fault frequencies of Beijing's new energy units are provided.

[0027] Figure 3 A method for improving a new energy wind turbine main control system provided by an embodiment of the present invention is provided, and a ranking comparison of the number of related faults of a variable pitch system of a Beijing new energy unit is provided.

[0028] Figure 4 A network structure of Huaneng Ruiwo PLC of a new energy wind turbine master control system improvement method provided as an embodiment of the present invention.

[0029] Figure 5 This is the main page of an HMI system for a method for improving a new energy wind turbine master control system provided by an embodiment of the present invention.

[0030] Figure 6 A variable pitch system structure of a new energy wind turbine main control system improvement method provided by an embodiment of the present invention.

[0031] Figure 7 A SCADA monitoring system network structure of an improved method for a new energy wind turbine main control system is provided in one embodiment of the present invention.

[0032] Figure 8 A functional diagram of a SCADA monitoring system for an improved method of a new energy wind turbine master control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Example 1

[0036] Reference Figure 1-Figure 8 , which is an embodiment of the present invention, a method for improving a main control system of a new energy wind turbine, comprising:

[0037] S1: Collect fault information of new energy units.

[0038] It should be noted that the collection of fault information of new energy units includes collecting the number of failures of the wind turbine's pitch, current conversion, main control, and generator systems, and presenting them in the form of a bar graph.

[0039] In the embodiment of the present application, through on-site investigation, the number of faults related to the pitch, current conversion, main control, and generator systems of the Beijing New Energy wind farm units is counted, and a bar graph of fault information is drawn. According to the bar graph, it can be seen that the most prominent fault in the new energy unit is the pitch system fault. The pitch fault mainly occurs during the continuous operation of the unit above the rated wind speed, which has a great impact on the power generation of the unit. At the same time, the main control PLC failure, generator bearing overheating, generator water cooling system overheating, converter overheating, and excessive tower vibration failures occur more frequently. Figure 1 S1 in and Figure 2 Figure 3 shown.

[0040] S2: Perform electrical and program design based on fault information.

[0041] It should be noted that the electrical and program design includes the transformation and design of the main control hardware, main control system, variable pitch system and SCADA system in the original new energy wind turbine unit.

[0042] Furthermore, the wind turbine units will be replaced with domestically produced PLCs, the HMI system will be replaced, the variable pitch system will be renovated, and the field-level SCADA system will be renovated and upgraded. The specific steps are as follows.

[0043] Step 1: By replacing the wind turbine master control hardware from Bachmann PLC to Huaneng Ruiwo's domestically produced PLC, the PLC master control program uses the wind turbine master control program independently developed by Huaneng Group, and optimizes the relevant control and protection strategies. The PLC channel requirements are combined with the wind turbine schematic diagram to analyze the demand information of various types of signals, and reservations are made on this basis. See Table 1-Table 2 below.

[0044] Table 1 Tower base cabinet hardware requirements analysis

[0045] Serial number Signal Type Number of channels 1 PT100 7 2 DI 40 3 DO 1 4 AI 1 5 CANOpen 2 6 RJ45 2 7 Photoelectric conversion module 1 8 CPU 1

[0046] Table 2 Analysis of hardware requirements for cabin cabinets

[0047] Serial number Signal Type Number of channels 1 AI 10 2 PT100 34 3 DI 91 4 DO 40 5 RS485 2 6 CANOpen 1 7 High-speed counting 1 8 RJ45 1

[0048] By combining the actual situation and functional requirements on site, the network topology diagram is designed, and the communication optical fiber from the tower to the bottom of the tower is reused according to the actual situation. Figure 4 shown.

[0049] Step 2: Replace the HMI system of the new energy wind turbine with a domestically produced touch screen, one on the tower and one under the tower; the screen can display key information during the operation of the unit, and can complete the unit's start and stop, fault reset, and component control instructions. Figure 5 shown.

[0050] Step 3: The pitch system modification adopts a high-voltage pitch system, including an AC servo drive, an AC asynchronous motor, a backup power supply, and peripheral sensors. The system adopts an embedded installation method to continue the three-cabinet structure of the original pitch system, retaining the shaft cabinet, supercapacitor group, and pitch motor of the original pitch system; each control cabinet controls one blade, and each pitch control cabinet has a supercapacitor group, a pitch drive, a safety chain circuit, a heater, a power distribution circuit, and an overvoltage protection circuit; the electrical isolation of the control signal between the pitch control cabinet and the nacelle, and between the pitch control cabinet and the pitch control cabinet is achieved. The modified pitch system structure includes three relatively independent pitch shaft boxes A, B, and C, as well as servo motors, position sensors, and limit switches connected to each shaft box. Each shaft box controls a blade separately, and the shaft boxes are connected to each other and to the motor through cables. The motor is connected to the blade flange gear through a reduction box. The power supply of the pitch system is connected through a slip ring, and the power supply is 3*400VAC+N+PE. After the power supply is introduced into cabinet A, the lightning protection module is connected, and the three-phase power supply is led out through the terminal block: one is connected to the reactor at the front end of the axle box drive, and the other two are led out separately and connected to cabinets B and C. The system safety link line is first connected to the lightning protection (overvoltage) protection terminal of cabinet A through a slip ring and then connected to the corresponding safety chain circuit. The safety link line is divided into 3 groups: the first group is the EFC signal, the second group is the variable pitch safety chain signal, and the third group is the blade safety position detection signal. The system uses a supercapacitor module as a backup power supply. The supercapacitor group and the servo drive are directly connected to the DC bus, and the main and backup power supplies are switched quickly and without interference. The backup power supply of each axle box is composed of 3 supercapacitor modules in series, with a terminal voltage of 450VDC. The backup power supply of the original variable pitch system is a supercapacitor, and each axle cabinet is equipped with 3*160Vdc output voltage 480Vdc. The new system uses the supercapacitor of the original variable pitch system. The lubricating oil pump control interface is configured, including the oil pump power supply, oil level feedback and distributor signal, which is compatible with the original variable pitch system lubrication interface. The system has built-in lubricating oil pump control logic to achieve automatic lubrication. Figure 6 shown.

[0051] In the embodiment of the present application, the pitch motor position sensor is changed from an SSI encoder to a rotary transformer, and the rotary transformer without a decoding chip has the advantages of a wider temperature tolerance range and stronger anti-electromagnetic interference capability. The main parameters are shown in Table 3.

[0052] Table 3 Technical indicators of rotary transformer

[0053]

[0054]

[0055] In the embodiment of the present application, the modified variable pitch system is made adaptable to the grid, including the voltage, frequency, three-phase voltage imbalance at the wind turbine generator set grid connection point, and the adaptability of the harmonic value at the wind turbine generator set grid connection point.

[0056] Step 4: The SCADA system design plan includes designing the SCADA monitoring system network structure, data acquisition communication protocol, SCADA monitoring function and SCADA redundancy function.

[0057] Furthermore, the SCADA system hardware mainly includes SCADA monitoring servers (2 units, serving as backup for each other), 1 workstation, 1 timing device and 1 switch. The SCADA monitoring server and timing device are deployed in the machine room of the substation, and the workstation is deployed in the main control room of the wind farm. The entire system is connected to the wind turbine ring network through a local area network. The SCADA monitoring server is mainly responsible for data acquisition, data processing, data storage and data push. The system is responsible for forwarding data to the centralized control center and accepting control instructions. The timing device adopts Beidou to provide timing services for the SCADA monitoring system and the wind turbine main control PLC. The timing system uses the original system of the old plant. The network structure of the SCADA monitoring system is as follows: Figure 7 As shown. The data acquisition communication protocol uses Modbus TCP / IP, and the data of the PLC master control is collected and stored in the real-time historical database through the optical fiber ring network. The main functions of SCADA monitoring include wind turbine monitoring, equipment control, load distribution, trend curve, fault alarm, statistical analysis, production report, authority management and log recording, such as Figure 8 As shown in the figure. The SCADA redundancy function includes two servers simultaneously collecting data, completing data calculation and receiving instructions. The client can switch the monitored data path and the operation instruction path. In the redundant mode, an additional server is configured.

[0058] S3: On-site transformation of the fan unit according to electrical and program design.

[0059] It should be noted that the on-site transformation of the fan unit according to the electrical and program design includes shutting down the fan unit and isolating it safely, and replacing and wiring the original electrical equipment according to the design plan.

[0060] In the embodiment of the present application, a total of 24 wind turbines in the Qiaowan Fifth Wind Farm are selected for technical transformation. First, the transformation of one prototype is completed. After the prototype has completed 240 hours of acceptance, the transformation of the remaining 23 units can be carried out to ensure the safe and stable operation of the units.

[0061] Furthermore, the present invention has formulated a detailed construction plan to ensure the safety of personnel during on-site wind turbine reconstruction and the normal operation of the equipment after reconstruction.

[0062] Table 4 System design related risk analysis and measures

[0063]

[0064] Furthermore, operations inside the hub belong to operations in a narrow space, and operations can only be started when the wind wheel lock is completely locked and the high-speed shaft brake is engaged, which has certain risks. The present invention has formulated safety measures including entering the wind turbine, pressing the stop button, and after the unit status displays "shutdown", the unit is switched to "maintenance" status. Lock the impeller mechanical lock, and then tighten the pressure maintaining valve (hydraulic station pressure ≥ 100bar). During operation, a dedicated person must always pay attention to the pressure value next to the pressure valve. If the pressure value is lower than 100bar, manually pressurize it immediately, and notify the hub operator to evacuate the hub. When using a crane, first check whether the crane can operate normally, and the operator must wear a safety belt and double groove. Disconnect the power supply between the cabin and the hub (main power supply and safety chain loop) before operation. Before dismantling, enter the hub and open the pitch control cabinet, disconnect all circuit breakers in the cabinet, use a multimeter to measure that the 400VAC input line of the slip ring is powered off, and the 230VAC is powered off. Untie the 400VAC input line of the slip ring, the safety chain input line, and the lubricating oil pump wiring in the main control cabinet. The safety chain input line and the lubricating oil pump line number definitions must be recorded according to the original pitch drawing to facilitate wiring after the new pitch system is installed. Before dismantling, check and confirm whether the cover plate of the blade and hub connection surface is firm to prevent personnel, tools and other materials from falling into the blade.

[0065] S4: Conduct performance testing and acceptance on the modified fan unit.

[0066] It should be noted that the performance testing and acceptance of the modified wind turbine units includes formulating the operation assessment methods for single prototypes and wind turbine units, and testing the operating parameters of the wind turbine units and the functions of the main control program.

[0067] Furthermore, the operation assessment method includes that the wind turbine sets shall be deemed qualified for trial operation if they operate continuously, stably and without fault for 240 hours, and if the rated wind speed appears during this period, the set shall reach the rated output. If the rated wind speed does not appear during the 240-hour trial operation period, the trial operation shall be postponed for 120 hours. If the rated wind speed still does not appear during the above postponed time, but the actual power generation of the set meets the power curve requirements (compared with the actual power curve of the set before and after the transformation, the error shall not exceed ±

[0068] 5%), it is also considered as qualified for trial operation. In addition, considering that external reasons may affect the accuracy of the test results, the present invention stipulates in the operation assessment method that shutdowns caused by external reasons are not considered as wind turbine failures. Specifically: power grid failure; shutdown due to hardware problems of the unit itself (except PLC and pitch system); meteorological conditions (including wind conditions and ambient temperature) exceed the operating range specified in the technical specifications.

[0069] Furthermore, the operation assessment method provides additional instructions for the acceptance criteria for the first prototype modification, including completing the safety assessment within no more than half a year after the first prototype is debugged. Comparative analysis of the PLC reliability of the units before and after the modification and the unmodified units is conducted. The prototype is operated for at least 3 months, and the PLC failure rate within 3 months is calculated and compared with the PLC failure rate of the two adjacent unmodified units. The rate is within ±10%, and the module damage rate of the modified unit does not exceed 2 pieces.

[0070] Example 2

[0071] As an embodiment of the present invention, the present invention provides the following technical solutions: a new energy wind turbine main control system improvement system, including: a fault information collection module, an electrical program design module, a transformation implementation module and a performance testing module;

[0072] The fault information collection module collects fault information of the new energy unit;

[0073] The electrical programming module performs electrical and programming design according to the fault information;

[0074] The transformation implementation module transforms the fan unit on site according to the electrical and program design;

[0075] The performance testing module performs performance testing and acceptance on the modified wind turbine unit.

[0076] This embodiment further provides a computing device, which is applicable to a method for improving a main control system of a new energy wind turbine, and includes:

[0077] Memory and processor; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to implement a new energy wind turbine main control system improvement method as proposed in the above embodiment.

[0078] The storage medium proposed in this embodiment and the improved method of the new energy wind turbine master control system proposed in the above embodiment belong to the same inventive concept. The technical details not fully described in this embodiment can be referred to the above embodiment, and this embodiment has the same beneficial effects as the above embodiment.

[0079] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., which can store program codes.

[0080] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0081] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for improving the main control system of a new energy wind turbine, characterized in that: include: Collect fault information of new energy units; Conduct electrical and program design based on fault information; On-site reconstruction of fan units according to electrical and program design; Carry out performance testing and acceptance on the modified fan units.

2. The method for improving the main control system of a new energy wind turbine according to claim 1, characterized in that: The collecting of fault information of the new energy unit includes collecting the number of faults of the variable pitch, current conversion, main control and generator systems of the wind turbine unit and presenting them in the form of a bar graph.

3. A new energy wind turbine main control system improvement method as claimed in claim 2, characterized in that: The electrical and program design includes the transformation and design of the main control hardware, main control system, variable pitch system and SCADA system in the original new energy wind turbine unit.

4. A new energy wind turbine main control system improvement method as claimed in claim 3, characterized in that: The on-site transformation of the fan unit according to the electrical and program design includes shutting down the fan unit and isolating it safely, and replacing and wiring the original electrical equipment according to the design plan.

5. A method for improving a new energy wind turbine main control system as claimed in claim 4, characterized in that: The performance test and acceptance of the modified wind turbine unit includes formulating a single prototype and wind turbine unit operation assessment method, and testing the wind turbine unit operation parameters and main control program functions.

6. A method for improving a new energy wind turbine main control system as claimed in claim 5, characterized in that: The wind turbine operating parameters include the stability and continuity of the wind turbine during operation, and the power generation of the wind turbine.

7. A method for improving a new energy wind turbine main control system as claimed in claim 6, characterized in that: The main control program functions include start control, shutdown control, grid connection / disconnection control, power generation operation control, yaw and unwinding control, pitch control, inverter control, central monitoring communication, fault alarm, box transformer signal monitoring, high / low voltage ride-through, low temperature operation, and reduced power operation.

8. A system using an improved new energy wind turbine main control system as claimed in any one of claims 1 to 7, characterized in that: include: Fault information collection module, electrical program design module, transformation implementation module and performance testing module; The fault information collection module collects fault information of the new energy unit; The electrical programming module performs electrical and programming design according to the fault information; The transformation implementation module transforms the fan unit on site according to the electrical and program design; The performance testing module performs performance testing and acceptance on the modified wind turbine unit.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of a method for improving a new energy wind turbine main control system as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for improving a new energy wind turbine main control system as described in any one of claims 1 to 7 are implemented.

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