Main control system of wind turbine generator and wind turbine generator

Abstract

The utility model discloses a main control system of a wind turbine generator and the wind turbine generator. The main control system comprises a controller; the plurality of remote IO modules are in one-to-one correspondence with a plurality of pieces of controlled equipment in the wind turbine generator; the power supply cabinet is used for supplying power to the controller and the plurality of controlled devices; each remote IO module collects information of the controlled equipment corresponding to the remote IO module; and each remote IO module is connected with the controller through a communication line, transmits the acquired information of the controlled equipment to the controller, receives a control signal sent by the controller, and controls the controlled equipment corresponding to the remote IO module based on the control signal. According to the embodiment of the invention, the modular design of the main control system is realized, repeated design can be reduced, the design time of the main control system of a new model is shortened, the design cost is reduced, the wiring process is simpler, and the possibility of wiring errors is effectively reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of wind power generation, and particularly relates to a wind turbine main control system and a wind turbine. BACKGROUND

[0002] The wind turbine refers to a wind power generator set, and a main control system of the wind power generator set is the brain of the wind power generator set, which is responsible for receiving external environment data such as wind speed and wind direction and internal state monitoring information, calculating optimal operation instructions through a preset control algorithm, so as to realize maximum energy capture and protection of equipment safety. The wind power generator set is composed of multiple parts, for example, as shown in the figure, the wind power generator set head mainly consists of blades, a hub and a nacelle, the nacelle internally contains a main shaft, a gear box, a generator and the like, and the operation, heat dissipation and lubrication of these configurations all need to use motors and sensors, and therefore the main control system usually needs to control multiple motors, sensors and the like controlled devices. Figure 1

[0003] The traditional wind power generator set main control system is composed of multiple electric control cabinets, each electric control cabinet contains PLC (Programmable Logic Controller), relays, terminals, contactors, circuit breakers, fuses and the like electrical elements with various functions, and the control and power supply of each controlled device need to be led out from the electric control cabinet. This makes the wiring process of the main control system more complex, and the wiring error probability is large. Moreover, since the types, quantities and positions of the controlled devices in different wind turbine models are different, the main control systems of different models need to be re-designed and developed, the design cycle is long, and the cost is high. Innovative content

[0004] The wind turbine main control system and the wind turbine provided by the embodiments of the application can simplify the wiring process of the main control system, reduce the repeated design of the main control system, and reduce the design cycle and cost.

[0005] In a first aspect, the embodiments of the application provide a wind turbine main control system, comprising:

[0006] a controller;

[0007] a plurality of remote IO modules, the plurality of remote IO modules correspond one-to-one to a plurality of controlled devices in the wind turbine;

[0008] a power cabinet, which supplies power for the controller and the plurality of controlled devices;

[0009] each remote IO module collects information of the controlled device corresponding thereto;

[0010] ​Each remote IO module is connected with the controller through a communication line, transmits the collected information of the controlled device to the controller, receives the control signal sent by the controller and controls the corresponding controlled device based on the control signal.

[0011] In a second aspect, the embodiment of the present application provides a wind turbine, which comprises the wind turbine master control system of the first aspect.

[0012] The wind turbine master control system and the wind turbine of the embodiment of the present application comprise a power supply cabinet, a controller and a plurality of remote IO modules, wherein the power supply cabinet is responsible for power supply to the controller and a plurality of controlled devices of the wind turbine, the plurality of remote IO modules serve as slave stations of the controller and are responsible for collecting information of the plurality of controlled devices and performing control operations on the plurality of controlled devices based on the control signal transmitted by the controller, and the controller serves as a communication master station and transmits the control signal to each remote IO module based on the information transmitted by the remote IO module, so as to realize scheduling control on the plurality of controlled devices. In the embodiment, modular design of the master control system is realized, most functions can be reused through the modular design, so that repeated design can be reduced, and the design time of the master control system of a new model can be shortened, and the design cost can be reduced. Moreover, the configuration of the controller will be more stable after the modular design, the configuration version is reduced, so that the workload of software development can also be reduced. In addition, the wiring work is greatly reduced through the modular design, and the wiring process is simpler, so that the possibility of wiring errors can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments of the present application. Those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0014] Figure 1 is a schematic view of a head structure of a wind turbine provided by the embodiment of the present application;

[0015] Figure 2 is a schematic view of a structure of a wind turbine master control system provided by the embodiment of the present application;

[0016] Figure 3 is a schematic view of a structure of a remote IO module provided by the embodiment of the present application;

[0017] Figure 4 is a schematic view of a structure of a protection box provided by the embodiment of the present application;

[0018] Figure 5 is a schematic view of installation of a protection box provided by the embodiment of the present application;

[0019] Figure 6is a structural schematic diagram of a wind turbine generator main control system provided by an embodiment of the present application;

[0020] Figure 7 is a structural schematic diagram of a traditional main control system provided by an embodiment of the present application;

[0021] Figure 8 is a structural schematic diagram of a wind turbine generator main control system provided by an embodiment of the present application;

[0022] Figure 9 is a structural schematic diagram of a wind turbine generator main control system provided by an embodiment of the present application. DETAILED DESCRIPTION

[0023] The features and exemplary embodiments of various aspects of the present application will be described below in detail, in order to make the purposes, technical solutions and advantages of the present application more clear and apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, but not to limit the present application. The present application can be implemented without some of these specific details by those skilled in the art. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0024] It should be noted that, in this paper, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0025] In order to solve the problems of complex wiring process and high design cost of the main control system in the prior art, an embodiment of the present application provides a wind turbine generator main control system and a wind turbine generator.

[0026] The wind turbine generator main control system provided by an embodiment of the present application will be described below in combination with the drawings.

[0027] Referring to Figure 2 is a structural schematic diagram of a wind turbine generator main control system provided by an embodiment of the present application, as Figure 2As shown, the master control system 200 provided in the embodiment includes a controller 210, a plurality of remote IO modules 220 and a power cabinet 230.

[0028] The controller 210 is a core component responsible for data processing and logical operation in the wind turbine, and can be a high-performance industrial control computer or a programmable logic controller (PLC).

[0029] The power cabinet 230 is an electrical device for distributing, controlling, protecting and monitoring the power supply of the wind turbine. It is used to distribute the total power supply of the wind turbine to each branch according to the needs of different devices and systems, and to supply power to the devices on each branch. In the embodiment, the power cabinet 230 is connected to the controller 210 and a plurality of controlled devices in the wind turbine through power lines, for supplying power to the controller 210 and the plurality of controlled devices.

[0030] The controlled devices of the wind turbine refer to the devices in the wind turbine that are controlled by the master control system. The controlled devices include, but are not limited to, a plurality of yaw motors, a plurality of gear box oil pump motors, a plurality of gear boxes, a main shaft and a generator cooling fan, a control fan, a gear box heater, etc.

[0031] The "IO" in the remote IO module 220 refers to input and output. The remote IO module 220 is a device for realizing the interaction between the controlled devices and the outside world, and connecting the controlled devices distributed in different positions to the controller 210 through network communication technology.

[0032] The wind turbine usually includes a plurality of controlled devices. In order to realize the control of the plurality of controlled devices, in the embodiment, the master control system 200 includes a plurality of remote IO modules 220 corresponding to the controlled devices in the wind turbine one by one, that is, each controlled device in the wind turbine is provided with a remote IO module 220. For example, the controlled devices in the wind turbine include N yaw motors, and the master control system includes N remote IO modules 220 corresponding to the N yaw motors one by one.

[0033] Each remote IO module 220 is connected to the controlled device corresponding thereto, for collecting the information of the controlled device corresponding thereto. Each remote IO module 220 is also connected to the controller 210 through a communication line, for transmitting the collected information of the controlled device to the controller 210, receiving the control signal sent by the controller 210 and controlling the controlled device corresponding thereto based on the control signal. The communication addresses of different remote IO modules 220 are different, and the controller 210 can realize accurate control of the controlled devices based on the communication addresses.

[0034] For example, the remote IO module 220 corresponding to the yaw motor is connected with the yaw motor, collects information of the yaw motor, communicates with the controller 210 based on the corresponding communication address, transmits the collected information of the yaw motor to the controller 210, and receives the control signal of the yaw motor sent by the controller 210, so as to control the yaw motor based on the received control signal.

[0035] In this way, each remote IO module 220 can serve as a substation of the controller 210, responsible for collecting information of controlled devices and controlling the controlled devices based on the control signal sent by the controller 210, and the controller 210 serves as a master station responsible for processing information collected by each substation and controlling the substation to control the controlled devices. In this way, a distributed master control system is formed, and the distributed structure enables the master control system to perform data transmission and control operation with controlled devices in different positions.

[0036] The wind turbine master control system provided in the embodiment includes a power cabinet 230, a controller 210 and a plurality of remote IO modules 220. The power cabinet 230 is responsible for power supply to the controller 210 and a plurality of controlled devices of the wind turbine. The plurality of remote IO modules 220 serve as slaves of the controller 210, responsible for collecting information of the plurality of controlled devices and controlling the plurality of controlled devices based on the control signal transmitted by the controller 210. The controller 210 serves as a communication master station, and transmits a control signal to each remote IO module 220 based on the information transmitted by the remote IO module 220, so as to realize scheduling control of the plurality of controlled devices. In the embodiment, modular design of the master control system is realized, and most functions can be reused through modular design, so as to reduce repeated design, shorten design time of a new model of master control system, and reduce design cost. Moreover, the configuration of the controller 210 is relatively stable after modular design, and the configuration version is reduced, so as to reduce the workload of software development. In addition, modular design greatly reduces wiring work, and the wiring process is simpler, effectively reducing the possibility of wiring errors.

[0037] The traditional master control system mainly realizes information collection and control operation of controlled devices through an electric control cabinet. Since different controlled devices are located in different positions, a plurality of electric control cabinets are usually distributed to facilitate connection of the electric control cabinet and the controlled devices, for example Figure 7As shown, it includes three electric control cabinets, namely electric control cabinet 1, electric control cabinet 2 and electric control cabinet 3. Each electric control cabinet needs to be authenticated before use, so the material cost and time cost of the traditional master control system are relatively high. In the embodiment, the remote IO module 220 is used to realize information collection and control operation of the controlled device, so the number of electric control cabinets can be reduced, thereby reducing the material cost, and the remote IO module 220 does not need to be authenticated, thereby saving the authentication time and reducing the time cost. In addition, the electric control cabinet used in the traditional master control system contains PLC, relay, terminal, contactor, circuit breaker, fuse and various functional electrical elements, which have large volume and weight, while the remote IO module 220 used in the embodiment has small volume and weight, and is more convenient to arrange.

[0038] In some embodiments, the remote IO module 220 supports CAN communication, RS485 communication or other industrial bus communication mode, so the communication line between the remote IO module 220 and the controller 210 can adopt CAN bus, RS485 bus and other industrial bus.

[0039] In some embodiments, the remote IO module 220 is powered by 24V voltage, so the remote IO module 220 is also connected with the controller 210 through the power line to be powered by the controller 210.

[0040] In some embodiments, the remote IO module 220 includes a digital quantity input loop and at least one of the following loops: current monitoring loop, digital quantity input loop, temperature measurement loop.

[0041] The digital quantity output loop is used to output a control signal to the contactor of the controlled device to control the start and stop of the controlled device. In actual application, after receiving the control signal sent by the controller 210 for controlling the controlled device, the remote IO module 220 outputs a control signal to the contactor of the controlled device through the digital quantity output loop, thereby realizing the control of the controlled device.

[0042] The current monitoring circuit is used to collect the current information of the controlled device. In actual application, the remote IO module 220 collects the current information of the controlled device through the current monitoring circuit, so as to transmit the current information of the controlled device to the controller 210, so that the controller 210 can generate the control signal corresponding to the controlled device based on the current information of the controlled device. The digital quantity input circuit is used to receive the feedback signal of the controlled device. In actual application, the remote IO module 220 collects the feedback signal of the controlled device through the digital quantity input circuit, so as to transmit the feedback signal of the controlled device to the controller 210, so that the controller 210 can generate the control signal corresponding to the controlled device based on the feedback signal of the controlled device. The feedback signal includes but is not limited to the rotating speed, switch state, pressure, flow and the like of the controlled device.

[0043] The temperature measurement circuit is used to collect the temperature information of the controlled device. In actual application, the remote IO module 220 collects the temperature information of the controlled device through the temperature measurement circuit, so as to transmit the temperature information of the controlled device to the controller 210, so that the controller 210 can generate the control signal corresponding to the controlled device based on the temperature information of the controlled device.

[0044] In some embodiments of the present application, the digital quantity output circuit includes a relay, and the relay is used to control the contactor of the controlled device. As described above, the power supply voltage of the remote IO module 220 is 24V, while the voltage of the controlled device is usually 400V or other voltage higher than 24V, and the control signal received by the remote IO module 220 cannot directly control the controlled device. By setting the relay, the small current control capability of the relay can be used to indirectly control the large current on-off of the contactor, so as to achieve the purpose of controlling the high-power circuit with small-power signal.

[0045] In some embodiments of the present application, the current monitoring circuit includes a current transformer, and the current information of the controlled device can be collected by sleeving the current transformer on the power supply line connected with the controlled device. In some embodiments of the present application, the controlled device is a rotating device with a rotating shaft, such as a motor, a fan and the like. The speed measurement circuit is included in the digital quantity input circuit, and the speed measurement circuit is used to measure the rotating speed of the rotating device.

[0046] In some embodiments of the present application, the speed measurement circuit includes a pulse generation unit and a speed calculation unit, wherein the pulse generation unit is used to convert the rotating motion of the rotating shaft into a pulse signal, and the speed calculation unit is used to determine the rotating speed of the rotating device based on the pulse signal output by the pulse generation unit. In this way, the rotating speed measurement based on the pulse signal can be realized.

[0047] In some embodiments of the present application, the pulse generating unit comprises a speed measuring gear and a rotating speed sensor, the speed measuring gear is installed on the rotating shaft and rotates with the rotating shaft, the rotating speed sensor detects the rotating movement of the speed measuring gear and converts the rotating movement of the speed measuring gear into a pulse signal. When the rotating shaft rotates to drive the speed measuring gear to rotate, the teeth of the speed measuring gear will periodically pass the rotating speed sensor, and the rotating speed sensor generates a periodic pulse signal according to the passing of the teeth.

[0048] In some embodiments of the present application, the rotating speed sensor is an optical sensor. The optical sensor comprises a light emitter and a receiver, the light emitter and the receiver are respectively installed on two sides of the speed measuring gear, and the light emitted by the light emitter just passes through the tooth groove of the speed measuring gear. In this way, when the speed measuring gear rotates, the teeth will periodically block the light, so that the light signal received by the receiver changes, thereby generating a pulse signal.

[0049] In some embodiments of the present application, the rotating speed sensor is a proximity switch. The proximity switch is installed on the axial side of the speed measuring gear, and the sensing surface of the proximity switch is opposite to the tooth surface of the speed measuring gear. For example, the proximity switch is arranged above or on the side of the speed measuring gear. In this way, when the speed measuring gear rotates, the tooth surface passes the proximity switch, so that the proximity switch accurately senses the passing of the tooth, thereby generating a pulse signal.

[0050] In some embodiments of the present application, the temperature measuring circuit comprises a thermistor, for example, a positive temperature coefficient (PTC) thermistor, a negative temperature coefficient (NTC) thermistor, and other thermistors whose resistance changes with temperature. The temperature measuring circuit determines the temperature information of the controlled device based on the resistance of the thermistor.

[0051] It should be noted that in the remote IO module 220, the number of the above various circuits can be set according to actual conditions, and the present embodiment does not make specific limitation. For example, referring to Figure 3 , the remote IO module 220 can comprise 3 current monitoring circuits, 4 digital output circuits, 8 digital input circuits and 1 temperature measuring circuit, wherein the 3 current monitoring circuits are represented by current monitoring circuit 1, current monitoring circuit 2 and current monitoring circuit 3, the 4 digital output circuits are represented by four relays -1K1, -1K2, -1K3 and -1K4, the 8 digital input circuits are represented by eight terminals DI1, DI2, DI3, DI4, DI5, DI6, DI7 and DI8, and the 1 temperature measuring circuit is represented by one PTC resistor.

[0052] Through the above design, the remote IO module 220 can monitor the current, rotating speed, temperature and other information of the controlled device, and transmit the monitored current, rotating speed, temperature and other information to the controller 210, so that the controller 210 can control the start and stop of the controlled device based on the current, rotating speed, temperature and other information of the controlled device, thereby improving the diagnosis and protection capability of the wind turbine.

[0053] In some embodiments, each remote IO module 220 is arranged on or within a preset range of the corresponding controlled device. In this way, the installation and maintenance of the remote IO module 220 are facilitated, and the system is easy to expand. When the wind turbine needs to be upgraded or expanded, a new controlled device is added, and the corresponding remote IO module 220 is installed on or near the new controlled device, and the installed remote IO module 220 is connected to the existing controller 210, without the need to make large-scale changes to the wiring and architecture of the entire main control system 200, thereby reducing the difficulty and cost of system expansion.

[0054] In some embodiments of the present application, the remote IO module 220 is adsorbed on the controlled device or within a preset range of the controlled device by a magnet or other magnetic element. The magnetic adsorption method is used to install the remote IO module 220, so that the installation and removal of the remote IO module 220 are extremely convenient, and the position of the remote IO module 220 can be adjusted at any time.

[0055] In some embodiments, the main control system 200 further includes a protection box corresponding to each remote IO module 220, and the remote IO module 220 and the necessary electrical elements such as the contactor and the connection terminal of the corresponding controlled device are arranged in the corresponding protection box. The connection terminal refers to a terminal for connecting the remote IO module 220 and the controlled device. For example, the connection terminal includes a terminal in the controlled device connected to the digital input loop in the remote IO module 220. By arranging the remote IO module 220, the contactor, the connection terminal and other electrical elements in the protection box, the influence of the environment on the electrical elements can be reduced, the performance of the electrical elements is protected, and the service life of the electrical elements is prolonged. At the same time, the protection box can provide stable support and fixation for the electrical elements inside, so as to ensure that the electrical elements will not be displaced due to vibration or other external forces during operation, and ensure that the connection between the electrical elements and other components is stable and reliable. In addition, in the traditional main control system, the contactor of the controlled device is usually arranged in the electrical control cabinet, and the electrical control cabinet includes electrical elements such as circuit breakers and fuses in addition to the contactor, and the internal structure is not convenient for wiring and maintenance. In the present embodiment, the remote IO module 220 and the contactor are arranged in the same protection box, which facilitates the connection and maintenance of the remote IO module and the contactor.

[0056] In some embodiments, the protection box comprises a box body and a box cover which are matched with each other, and the box body and the box cover are matched to form a closed containing cavity, and the remote IO module 220 corresponding to the protection box and the contactor and the connection terminal of the controlled device corresponding to the remote IO module 220 are arranged in the containing cavity.

[0057] In some embodiments of the present application, the box body is a main part of the protection box and is used for containing electrical elements, and the box body has a certain shape and size to adapt to the needs of different electrical elements. The wall thickness of the box body is determined according to the protection requirements and the material characteristics, and is generally between 1 mm and 5 mm.

[0058] In some embodiments of the present application, the box cover is detachably connected to the box body by a fastener. Exemplarily, the fastener includes but is not limited to a screw, a pin, a buckle, etc. The box cover and the box body are connected by the fastener, so that the connection between the box body and the box cover is more firm and the sealing performance is good, thereby reducing the entry of dust, water vapor, etc. into the containing cavity, enabling the electrical elements in the protection box to operate in a stable environment and not to be disturbed by external dust, moisture, etc., and ensuring the stability and consistency of the performance.

[0059] In some embodiments of the present application, the box cover is movably connected to the box body by a connecting assembly. Exemplarily, the connecting assembly includes but is not limited to a hinge, a rotating shaft, a sliding rail, etc. By movably connecting the box cover to the box body, the protection box can be conveniently opened and closed, thereby facilitating the maintenance of the electrical elements in the protection box.

[0060] In some embodiments, in order to facilitate the observation of the electrical elements in the protection box, a see-through window is arranged on the box cover of the protection box. For example, as shown in Figure 4 , the protection box comprises a box cover 410 and a box body 420, and the box cover 410 is provided with a see-through window 4101.

[0061] In some embodiments of the present application, the see-through window is sealed by a transparent material such as transparent acrylic or transparent glass.

[0062] In some embodiments, a mounting assembly is arranged on the protection box, and the protection box is arranged on the controlled device or within the preset range of the controlled device by the mounting assembly. In this way, the electrical elements in the protection box are also arranged on the controlled device or within the preset range of the controlled device, facilitating the later maintenance.

[0063] In some embodiments of the present application, the mounting assembly comprises a magnetic element such as a magnet, so that the protection box can be mounted on the controlled device or within the preset range of the controlled device by magnetic attraction. For example, as shown in Figure 5 , the controlled device is a motor 500, and the protection box 510 is mounted on the motor 500 by magnetic attraction.

[0064] In some embodiments of the present application, the mounting assembly can also include screws, buckles, hooks, stickers, etc. In this way, the protection box can also be installed on the controlled device or within the preset range of the controlled device in the form of screw installation, buckle installation, hook installation, or sticker installation.

[0065] In some embodiments of the present application, during actual application, the protection box, the remote IO module 220, and the electrical elements in the protection box such as the contactors and connection terminals of the controlled device can be produced and applied as a whole remote control box.

[0066] The wind turbine also includes a plurality of sensors, and the main control system 200 needs to obtain information collected by the plurality of sensors. Referring to Figure 7 , in the traditional main control system, each sensor S is separately connected with the electric control cabinet to transmit sensor signals to the main control system, and from Figure 7 , it can be seen that this method requires more connection lines and complex wiring.

[0067] In view of this, in order to further simplify the structure of the active system, referring to Figure 6 , in some embodiments, the main control system 200 also includes a sensor signal acquisition module 240. The sensor signal acquisition module 240 is connected with the plurality of sensors in the wind turbine, and is used to acquire sensor signals of the plurality of sensors in the wind turbine. The sensor signal acquisition module 240 is also connected with the controller 210 through a communication line, and transmits the acquired sensor signals to the controller 210 through the communication line.

[0068] For example, referring to Figure 8 , the plurality of sensors S are connected with the sensor signal acquisition module 240, and transmit sensor signals of the plurality of sensors S to the controller 210 through the sensor signal acquisition module 240.

[0069] By setting the sensor signal acquisition module 240, the plurality of sensors can be connected with the controller 210 through the same sensor signal acquisition module 240. In this way, the sensors do not need to be individually wired to the controller 210, and the structure of the main control system is simplified.

[0070] The traditional main control system mainly includes a plurality of control cabinets. The control and power supply of each controlled device in the wind turbine need to be drawn from the control cabinet, and therefore each controlled device needs to be individually wired to the control cabinet. As shown in Figure 7 , the main control system of the wind turbine includes three electric control cabinets, namely electric control cabinet 1, electric control cabinet 2, and electric control cabinet 3. Each motor M and sensor S corresponding to the main shaft, gear box, and generator are respectively connected with the electric control cabinet 1, electric control cabinet 2, or electric control cabinet 3. From Figure 7 , it can be seen that the wiring process of this main control system is complex and prone to wiring errors.

[0071] In view of this, in order to further simplify the structure of the master control system 200, in some embodiments, the plurality of controlled devices are divided into at least one first device group, and each first device group includes a plurality of controlled devices. All the controlled devices in the same first device group correspond to remote IO modules 220 connected to the controller 210 through the same communication bus.

[0072] For example, referring to Figure 8 , the plurality of controlled devices include 8 motors M in the main shaft, 2 motors M in the gear box, and 4 motors M in the generator. Each motor M is provided with a remote IO module 220 (not shown in Figure 8 ), and the plurality of controlled devices are divided into two first device groups. One of the first device groups includes 8 motors M in the main shaft, and the other first device group includes 2 motors M in the gear box and 4 motors M in the generator. As shown in Figure 8 , based on the above division, the 8 remote IO modules 220 corresponding to the 8 motors M in the main shaft are connected to the controller 210 through the same communication bus 810, and the 2 remote IO modules 220 corresponding to the 2 motors M in the gear box and the 4 remote IO modules 220 corresponding to the 4 motors M in the generator are connected to the controller 210 through the same communication bus 820.

[0073] In some embodiments of the present application, the plurality of controlled devices can be divided into at least one first device group according to a set grouping rule. The grouping rule can be set according to actual conditions, for example, the grouping rule includes but is not limited to grouping the plurality of controlled devices based on the installation position, function, mechanical structure, etc. of the controlled devices.

[0074] Through the above design, most of the remote IO modules 220 are connected in series through the communication bus, and each remote IO module 220 does not need to be wired from the controller 210, which simplifies the structure of the master control system.

[0075] In some embodiments, the plurality of controlled devices can also be divided into at least one second device group, and each second device group includes a plurality of controlled devices. All the controlled devices in the same second device group are connected to the power supply cabinet 230 through the same power supply bus.

[0076] For example, referring to Figure 8 , the plurality of controlled devices include 8 motors M in the main shaft, 2 motors M in the gear box, and 4 motors M in the generator. The plurality of controlled devices are divided into two second device groups. One of the second device groups includes 8 motors M in the main shaft, and the other second device group includes 2 motors M in the gear box and 4 motors M in the generator. Based on this, as shown in Figure 8As shown, based on the above division, 8 motors M in the main shaft are connected in series through the power bus 830 and then connected to the power cabinet 230, 2 motors M in the gearbox and 4 motors M in the generator are connected in series through the power bus 840 and then connected to the power cabinet 230.

[0077] It should be noted that the grouping manner of the second device group can be consistent with or inconsistent with the grouping manner of the first device group, and the specific grouping manner can be set according to actual conditions, and the present embodiment does not make specific limitations.

[0078] Through the above design, most of the controlled devices are connected in series through the power bus, and each controlled device does not need to be connected from the power cabinet 230, thereby simplifying the structure of the main control system.

[0079] In some embodiments, the main control system of the wind turbine generator is mainly concentrated in the tower bottom and the nacelle, and based on this, the controller 210 can include a first controller arranged in the nacelle and / or a second controller arranged in the tower bottom.

[0080] In the case where the controller 210 includes the first controller, the plurality of controlled devices include a plurality of nacelle controlled devices arranged in the nacelle. Illustratively, the nacelle controlled devices include but are not limited to motors, fans, etc. in the yaw system, the generator, the gearbox, the main shaft, the heat dissipation system, the speed measurement system, the weather station, the hydraulic station, the brake system, the variable pitch system, etc. For example, the nacelle controlled devices include yaw motors, oil pump motors, radiator fans, generator fans, etc. A plurality of remote I0 modules corresponding to the plurality of nacelle controlled devices are connected to the first controller through communication lines.

[0081] In the case where the controller 210 includes the second controller, the plurality of controlled devices include a plurality of tower bottom controlled devices arranged in the tower bottom. Illustratively, the tower bottom controlled devices include but are not limited to the converter, the electric energy meter, the UPS power supply, the tower bottom control cabinet installation touch screen, etc., and a plurality of remote I0 modules corresponding to the plurality of tower bottom controlled devices are connected to the second controller through communication lines.

[0082] In some embodiments of the present application, the first controller can be a PLC controller in the nacelle cabinet of the wind turbine generator, and the nacelle cabinet is a control cabinet arranged in the nacelle of the wind turbine generator. In addition to the PLC controller, the nacelle cabinet can also include other important control devices.

[0083] In some embodiments of the present application, the second controller can be a PLC controller in the tower bottom cabinet of the wind turbine generator, and the tower bottom cabinet is a control cabinet arranged in the tower bottom of the wind turbine generator. In addition to the PLC controller, the tower bottom cabinet can also include other important control devices.

[0084] In order to improve the real-time performance, stability and anti-interference performance of the main control system, optical fiber communication is adopted between the first controller and the second controller.

[0085] Exemplarily, referring to Figure 9 Taking that the controller 210 includes a first controller and a second controller as an example, the main control system 200 includes a power cabinet 230, a nacelle cabinet 910, a tower bottom cabinet 920, a nacelle remote IO module set 930, a tower bottom remote IO module set 940 and a sensor signal acquisition module 240, wherein the nacelle remote IO module set 930 includes remote IO modules corresponding to a plurality of nacelle controlled devices one by one, Figure 9 Taking only that the nacelle remote IO module set 930 includes 12 remote IO modules corresponding to 12 yaw motors in a yaw control system and 6 remote IO modules corresponding to 6 heat dissipation fans in a transmission chain system as an example, wherein the 12 remote IO modules corresponding to the 12 yaw motors are connected in series to the first controller 9101 through the same communication bus, and the 6 remote IO modules 220 corresponding to the 6 heat dissipation fans are connected in series to the first controller 9101 through the same communication bus. The tower bottom remote IO module set 940 includes remote IO modules corresponding to a plurality of tower bottom controlled devices one by one, Figure 9 Taking only that the tower bottom remote IO module set 940 includes 5 remote IO modules corresponding to 5 tower bottom motors as an example, the 5 remote IO modules 220 corresponding to the 5 tower bottom motors are connected in series to the second controller 9201 through the same communication bus.

[0086] In some embodiments, the power cabinet 230 can be installed in the nacelle or installed in the tower bottom, and the specific installation position can be determined according to the actual situation, and the embodiment is not limited specifically.

[0087] Based on the wind turbine main control system provided in the above embodiments, the embodiment of the present application further provides a wind turbine, which at least includes the wind turbine main control system provided in any of the above embodiments.

[0088] The above is merely specific implementation manners of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, module and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described herein. It should be understood that the protection scope of the present application is not limited to this, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed in the present application, and these modifications or replacements should be covered in the protection scope of the present application.

Claims

1. A wind turbine generator main control system characterized by, The wind turbine includes: a controller; a plurality of remote IO modules corresponding to a plurality of controlled devices in the wind turbine; a power cabinet for supplying power to the controller and the plurality of controlled devices; each remote IO module collects information of the corresponding controlled device; each remote IO module is connected to the controller through a communication line, transmits the collected information of the controlled device to the controller, receives a control signal sent by the controller and controls the corresponding controlled device based on the control signal.

2. The master system of claim 1, wherein, The remote IO module includes a digital output loop and at least one of the following loops: a current monitoring loop, a digital input loop, and a temperature measurement loop. The digital output loop is configured to output a control signal to a contactor of the controlled device to control the start and stop of the controlled device. The current monitoring loop is configured to collect current information of the controlled device. The digital input loop is configured to receive a feedback signal of the controlled device. The temperature measurement loop is configured to collect temperature information of the controlled device.

3. The host system of claim 2, wherein, The controlled device includes a rotating device with a rotating shaft, and the digital input loop includes a speed measurement loop. The speed measurement loop includes a pulse generation unit and a speed calculation unit. The pulse generation unit is configured to convert the rotating motion of the rotating shaft into a pulse signal. The speed calculation unit is configured to determine the rotating speed of the rotating device based on the pulse signal.

4. The master system of claim 3, wherein, The pulse generation unit includes a speed measurement gear and a rotating speed sensor. The speed measurement gear is installed on the rotating shaft and rotates with the rotating shaft. The rotating speed sensor detects the rotating motion of the speed measurement gear and converts the rotating motion into a pulse signal.

5. The master system of claim 1, wherein, The main control system further includes a protection box corresponding to each remote IO module. The protection box includes a box body and a box cover that cooperate with each other to form a closed accommodation cavity, and a see-through window is arranged on the box cover. The remote IO module corresponding to the protection box and the contactor and the connection terminal of the controlled device corresponding to the remote IO module are arranged in the accommodation cavity.

6. The host system of claim 1, wherein, The wind turbine includes a plurality of sensors, and the main control system further includes a sensor signal acquisition module. The sensor signal acquisition module is connected to the plurality of sensors in the wind turbine and acquires sensor signals of the plurality of sensors. The sensor signal acquisition module is connected to the controller through a communication line and transmits the acquired sensor signals to the controller.

7. The host system of claim 1, wherein, The plurality of controlled devices are divided into at least one first device group, and each first device group includes a plurality of controlled devices. The remote IO modules corresponding to all controlled devices in the same first device group are connected to the controller through the same communication bus.

8. The master system according to any one of claims 1 to 7, characterized by, The controller includes a first controller arranged in a nacelle of the wind turbine. The plurality of controlled devices include at least one nacelle controlled device arranged in the nacelle. Each nacelle controlled device corresponds to a remote IO module connected to the first controller through a communication line.

9. The master system according to any one of claims 1 to 7, characterized by, The controller comprises a second controller arranged at a tower bottom of the wind turbine generator; The plurality of controlled devices comprises at least one tower bottom controlled device arranged at the tower bottom; The remote I0 module corresponding to each of the tower bottom controlled devices is connected to the second controller through a communication line.

10. A wind turbine generator characterized by, A main control system of a wind turbine generator comprising any one of claims 1-9.

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