Wind power generation system and energy storage system

Abstract

The utility model discloses a wind power generation system and an energy storage system, and belongs to the field of power electronics. The wind power generation system comprises a wind power plant energy management system, a master controller, a wind power assembly and a transformer station, and the wind power plant energy management system is provided with a first interface suitable for being in communication connection with a power grid dispatching system; the master controller is in communication connection with the wind power plant energy management system; the wind power assembly comprises a main controller and a converter, the main controller is in communication connection with the wind power plant energy management system, and the converter is selectively in communication connection with the main controller and the main controller. The response speed of the wind power assembly to the power grid dispatching system is improved.

Description

Technical Field

[0001] This application belongs to the field of power electronics, and particularly relates to a wind power generation system and an energy storage system. Background Art

[0002] In the design of a wind power generation system, the converter of the wind power components, as the most critical power electronic energy conversion device in the entire wind farm, is mainly controlled by the main controller of the wind power components. In related technologies, if the converter needs to respond to the grid dispatching instruction, the grid dispatching needs to first send an instruction to the wind farm energy management system, and the wind farm energy management system sends an instruction to the main controller of each wind power component. After receiving the instruction, the main controller of the wind power component then sends an instruction to the converter. The entire process takes several seconds, and the response process is very slow, unable to meet the requirement of fast response, and thus needs to be improved. Content of the Utility Model

[0003] This application aims to at least solve one of the technical problems existing in the prior art. For this purpose, this application provides a wind power generation system and an energy storage system, which improve the response speed of the wind power components to the grid dispatching system.

[0004] In a first aspect, this application provides a wind power generation system, including:

[0005] A wind farm energy management system having a first interface adapted to communicate with the grid dispatching system;

[0006] A general controller communicatively connected to the wind farm energy management system;

[0007] Wind power components, where the wind power components include a main controller and a converter. The main controller is communicatively connected to the wind farm energy management system, and the converter is selectively communicatively connected to the main controller and the general controller.

[0008] According to the wind power generation system of this application, by setting the converter to selectively communicate with the main controller and the general controller, when the converter is used for power generation, the converter only accepts the control of the main controller of the wind power components and does not respond to the instruction sent by the wind farm energy management system through the general controller; when the converter of the wind power components does not need to generate power, it can quickly respond to the instruction obtained from the grid dispatching system received by the wind farm energy management system. At this time, the wind farm energy management system sends the instruction to the general controller deployed inside the wind power generation system, and the general controller quickly sends the instruction to the converters of each wind power component, improving the response speed of the wind power components to the grid dispatching system.

[0009] According to an embodiment of the present application, the master controller is provided with a first EtherCAT communication interface, and the converter is provided with a second EtherCAT communication interface. The first EtherCAT communication interface is used for communication connection with the second EtherCAT communication interface.

[0010] According to an embodiment of the present application, there are multiple converters. The multiple second EtherCAT communication interfaces of the multiple converters are connected in series and then communicate with the master controller.

[0011] According to an embodiment of the present application, the converter includes a sub-controller, and the sub-controller is provided with the second EtherCAT communication interface.

[0012] According to an embodiment of the present application, the second EtherCAT communication interface includes a first EtherCAT transmission network port and a first EtherCAT reception network port. The first EtherCAT transmission network port is selectively connected to the reception network port of the first EtherCAT communication interface or the first EtherCAT reception network port of the adjacent converter. The first EtherCAT reception network port is selectively connected to the transmission network port of the first EtherCAT communication interface or the first EtherCAT transmission network port of the adjacent converter.

[0013] According to an embodiment of the present application, the wind farm energy management system is provided with a first network communication interface, and the master controller is provided with a second network communication interface. The first network communication interface and the second network communication interface are in communication connection.

[0014] According to an embodiment of the present application, the wind farm energy management system is provided with a third network communication interface, and the master controller is provided with a fourth network communication interface. The third network communication interface and the fourth network communication interface are in communication connection.

[0015] According to an embodiment of the present application, the converter is provided with a first CANopen communication interface, and the master controller is provided with a second CANopen communication interface. The first CANopen communication interface and the second CANopen communication interface are in communication connection.

[0016] According to an embodiment of the present application, the converter is provided with a first DP communication interface, and the master controller is provided with a second DP communication interface. The first DP communication interface and the second DP communication interface are in communication connection.

[0017] In a second aspect, the present application provides an energy storage system, comprising: an energy storage device and a wind power generation system as described in any one of the above embodiments, wherein an inverter of the wind power generation system is electrically connected to the energy storage device.

[0018] According to the energy storage system of the present application, by adopting a wind power generation system, the inverter in the wind power generation system is set to selectively communicate with a main controller and a master controller. When the inverter is used for power generation, the inverter only receives the control of the main controller of the wind power components and does not respond to the instructions sent by the wind farm energy management system through the master controller; when the inverter of the wind power components does not need to generate power, it can quickly respond to the instructions obtained by the wind farm energy management system from the grid dispatching system. At this time, the wind farm energy management system issues the instructions to the master controller deployed in the wind power generation system, and the master controller quickly sends the instructions to the inverters of each wind power component, improving the response speed of the wind power components to the grid dispatching system.

[0019] Additional aspects and advantages of the present application will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0021] Figure 1 is one of the structural schematic diagrams of the wind power generation system provided by the embodiment of the present application;

[0022] Figure 2 is another structural schematic diagram of the wind power generation system provided by the embodiment of the present application;

[0023] Figure 3 is still another structural schematic diagram of the wind power generation system provided by the embodiment of the present application;

[0024] Figure 4 is the process schematic diagram of the wind power generation system provided by the embodiment of the present application.

[0025] REFERENCE MARKS:

[0026] Wind farm energy management system 1, first interface 11, first network communication interface 12, third network communication interface 13, master controller 2, first EtherCAT communication interface 21, fourth network communication interface 22, wind power components 3, main controller 31, second CANopen communication interface 311, second DP communication interface 312, second network communication interface 313, converter 32, second EtherCAT communication interface 321, first EtherCAT transmission network port 3211, first EtherCAT reception network port 3212, first CANopen communication interface 322, first DP communication interface 323, sub-controller 324, transformer substation 4, second interface 41;

[0027] Grid dispatching system 5, power grid 6. Specific implementation manner

[0028] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0029] In the design of a wind power generation system, the converter of the wind power components is the most critical power electronic energy conversion device in the entire wind farm and is mainly controlled by the main controller of the wind power components. If it is necessary to directly respond to the instructions of the grid dispatching system, the grid dispatching system needs to first send instructions to the wind farm energy management system, and the wind farm energy management system sends instructions to the main controllers of each wind power component. After receiving the instructions, the main controller of the wind power component then sends instructions to the converter. The entire process takes several seconds and the response process is very slow, which cannot meet the requirements of rapid response.

[0030] In view of the above problems, the present application provides a wind power generation system and an energy storage system. The converter 32 of the wind power component 3 is added with a second EtherCAT communication interface 321 to quickly respond to the grid dispatching system 5, and a new Goose communication network can be built using the industrial real-time Ethernet technology EtherCAT, effectively improving the utilization rate of the network link, greatly reducing the data transmission time, and improving the response speed of the wind power component 3 to the grid dispatching system 5.

[0031] The following refers to Figures 1-4 Describe the wind power generation system and energy storage system according to the embodiments of the present application.

[0032] As Figure 1 and Figure 2 shown, the wind power generation system of the embodiments of the present application includes: a wind farm energy management system 1, a master controller 2, a transformer substation 4, and at least one wind power component 3.

[0033] As Figure 1 and Figure 2 shown, the wind farm energy management system 1 has a first interface 11 adapted to communicate with the grid dispatching system 5.

[0034] The wind farm energy management system 1 is responsible for monitoring and controlling the energy output of the wind power generation system. The wind farm energy management system 1 has a first interface 11 for communicating with the grid dispatching system 5. Through the first interface 11, the wind farm energy management system 1 can receive the demand signal of the grid dispatching system 5 and adjust the power generation strategy of the wind power generation system accordingly.

[0035] The master controller 2 is communicatively connected to the wind farm energy management system 1. A master controller 2 is added to the wind power generation system, and the master controller 2 is mainly used to receive the instructions of the grid dispatching system 5.

[0036] The master controller 2 is the central control unit of the wind power generation system. The master controller 2 is communicatively connected to the wind farm energy management system 1. The master controller 2 is responsible for coordinating the operation of each wind power component 3 in the wind power generation system to maintain the normal operation of the entire wind power generation system.

[0037] [[ID=**17**]]As Figure 1 and Figure 2 shown, the wind power component 3 includes a master controller 31 and an inverter 32. The master controller 31 is communicatively connected to the wind farm energy management system 1, and the inverter 32 is selectively communicatively connected to the master controller 31 and the master controller 2;

[0038] Among them, there may be multiple wind power components 3. After being connected in series, the multiple wind power components 3 are communicatively connected to the master controller 2; or, the multiple wind power components 3 are respectively communicatively connected to the master controller 2.

[0039] The master controller 31 is responsible for managing the operating state of the wind power component 3, including the rotational speed and power output of the wind turbine. The master controller 31 exchanges data with the wind farm energy management system 1 through a communication connection to receive control instructions and send status information. The inverter 32 is responsible for converting the electrical energy generated by the wind turbine into an electrical energy form suitable for use by the power grid 6.

[0040] As Figure 1 and Figure 2 shown, the inverter 32 can be selectively communicatively connected to the master controller 31 and the master controller 2 for more refined control and adjustment.

[0041] In actual operation, as Figure 4As shown, when the converter 32 is used for power generation, the wind farm energy management system 1 interacts with each main controller 31 to control the output of the converter 32 of the wind power component 3, and then accesses the power grid 6 through the transformer substation 4. At this time, the converter 32 of the wind power component 3 only receives the control of the main controller 31 of the wind power component 3 and does not respond to the instructions sent by the wind farm energy management system 1 through the master controller 2; when the converter 32 of the wind power component 3 does not need to generate power, it can no longer respond to the instructions sent by the main controller 31 of the wind power component 3 as required. At this time, it can quickly respond to the instructions obtained by the wind farm energy management system 1 from the power grid dispatching system 5. At this time, the wind farm energy management system 1 issues the instructions to the master controller 2 deployed in the wind power generation system, and the master controller 2 quickly sends the instructions to the converters 32 of each wind power component 3 to achieve the purpose of quick response.

[0042] As Figure 1 and Figure 2 shown, the transformer substation 4 is electrically connected to at least one wind power component 3, and the transformer substation 4 has a second interface 41 electrically connected to the power grid 6.

[0043] The transformer substation 4 is a power conversion and transmission node between the wind power generation system and the power grid 6. The transformer substation 4 is electrically connected to the wind power component 3 and is electrically connected to the power grid 6 through the second interface 41. The transformer substation 4 is responsible for converting the electric energy generated by the wind power component 3 into a voltage level suitable for transmission by the power grid 6 and enabling the stable output of the electric energy.

[0044] In this embodiment, the communication between the wind farm energy management system 1, the master controller 2, the transformer substation 4, and the wind power component 3 can be implemented through a wired or wireless network. The communication protocol can be a standard industrial communication protocol, such as Goose, Modbus, IEC 61850, or a custom protocol, to improve the reliability and real-time performance of data transmission.

[0045] According to the wind power generation system provided by the embodiment of the present application, by setting the converter 32 to selectively communicate with the main controller 31 and the master controller 2, when the converter 32 is used for power generation, the converter 32 only receives the control of the main controller 31 of the wind power component 3 and does not respond to the instructions sent by the wind farm energy management system 1 through the master controller 2; when the converter 32 of the wind power component 3 does not need to generate power, it can quickly respond to the instructions obtained by the wind farm energy management system 1 from the power grid dispatching system 5. At this time, the wind farm energy management system 1 issues the instructions to the master controller 2 deployed in the wind power generation system, and the master controller 2 quickly sends the instructions to the converters 32 of each wind power component 3, improving the response speed of the wind power component 3 to the power grid dispatching system 5.

[0046] As Figure 1 and Figure 2As shown, in some embodiments, the master controller 2 is provided with a first EtherCAT communication interface 21, and the converter 32 is provided with a second EtherCAT communication interface 321. The first EtherCAT communication interface 21 is used for communication connection with the second EtherCAT communication interface 321.

[0047] The master controller 2 is provided with a first EtherCAT communication interface 21, and the first EtherCAT communication interface 21 is responsible for data exchange with the wind farm energy management system 1 and other wind power components 3. Through the EtherCAT protocol, the master controller 2 can achieve high-speed data transmission and precise synchronous control.

[0048] Each converter 32 is provided with a second EtherCAT communication interface 321, and the second EtherCAT communication interface 321 is connected to the first EtherCAT communication interface 21 of the main controller 31 to allow efficient data communication between the converter 32 and the master controller 2, improving the response speed of the wind power component 3 to the grid dispatching system 5.

[0049] The EtherCAT communication protocol is adopted between the first EtherCAT communication interface 21 and the second EtherCAT communication interface 321, improving the high-speed and real-time performance of data transmission between the converter 32 and the master controller 2. The EtherCAT protocol supports high-speed Ethernet communication and can achieve synchronous update of data within microseconds, greatly reducing the data transmission time and improving the response speed of the wind power component 3 to the grid dispatching system 5.

[0050] Compared with the response of the converter 32 of the wind power component 3 in the traditional wind power generation system to the grid dispatching system 5, in the wind power generation system, a master controller 2 containing a first EtherCAT communication interface 21 is added, and a sub-controller 324 containing a second EtherCAT communication interface 321 is added to the converter 32 of the wind power component 3. The master controller 2 and each sub-controller 324 form a ring network, which can meet the requirements of the power station for rapid response to the grid dispatching system 5, and there is not much increase in cost for the entire wind power generation system. Therefore, there is a greater cost advantage in the construction of the wind power generation system.

[0051] In the actual operation of the wind farm, the EtherCAT communication network enables the master controller 2 to monitor and adjust the operating status of each wind power component 3 in real time, including the rotational speed and power output of the wind turbine, etc., to adapt to the changing wind speed and grid 6 requirements.

[0052] In the related art, in addition to forwarding instructions through the main controller 31 of the wind power component 3, a ring network is generally installed in the wind power generation system. The wind farm energy management system 1 can also use the ring network through a switch to send instructions to the converters 32 of each wind power component 3. This method takes the traditional switch Ethernet technology as the core and adopts a star network or a ring network method. It is mainly affected by the number and performance of switches, which will cause data transmission delay and there is also a problem of broadcast storm.

[0053] In this embodiment, the current commonly used switched Ethernet technology can be replaced by the real-time Ethernet technology EtherCAT. The communication between the converters 32 of the wind power component 3 does not need to pass through a switch, thereby effectively improving the utilization rate of the network link, greatly reducing the data transmission time, and improving the response speed of the wind power component 3 to the power grid dispatching system 5; and the wind power generation system of this application supports communication protocols such as Goose, and can directly use the ring network in the wind farm to build a new Goose communication ring network, reducing the networking cost and maintenance cost.

[0054] In some embodiments, as Figure 3 shown, there are multiple converters 32, and the multiple second EtherCAT communication interfaces 321 of the multiple converters 32 are connected in series and then communicate with the master controller 2.

[0055] The wind power generation system includes multiple converters 32, and each converter 32 is provided with at least one second EtherCAT communication interface 321. The second EtherCAT communication interface 321 is responsible for data exchange with the main controller 31 to achieve precise control of the output power of the wind turbine.

[0056] The multiple second EtherCAT communication interfaces 321 of the multiple converters 32 are connected in series to form an EtherCAT communication link. This configuration allows data to be efficiently transmitted between the converters 32 and between the converters 32 and the master controller 2.

[0057] The master controller 2 is provided with a first EtherCAT communication interface 21, and the first EtherCAT communication interface 21 is connected to the link formed by the second EtherCAT communication interfaces 321 of the converters 32. In this way, the master controller 2 can monitor and control the operating status of each converter 32 in real time, including parameters such as power output, current, and voltage.

[0058] In this embodiment, the converters 32 of the wind power component 3 deploy devices containing the second EtherCAT communication interface 321 to respond to the power grid dispatching system 5, which can support the Goose communication protocol and meet the requirements for the converters 32 of the wind power component 3 in the wind power generation system to quickly respond to the power grid dispatching system 5.

[0059] An application solution is provided in an embodiment of the present application, which deploys a sub - controller 324 with a second EtherCAT communication interface 321 inside the converter 32 of the wind power component 3 to quickly respond to the grid dispatching system 5. The converter 32 includes a sub - controller 324, and the sub - controller 324 is provided with a second EtherCAT communication interface 321.

[0060] Among them, as Figure 3 shown, the second EtherCAT communication interface 321 includes a first EtherCAT transmission network port 3211 and a first EtherCAT reception network port 3212. The first EtherCAT communication interface 21 includes a second EtherCAT transmission network port and a second EtherCAT reception network port.

[0061] The first EtherCAT transmission network port 3211 is selectively connected to the reception network port of the first EtherCAT communication interface 21 or the first EtherCAT reception network port 3212 of the adjacent converter 32. The first EtherCAT reception network port 3212 is selectively connected to the transmission network port of the first EtherCAT communication interface 21 or the first EtherCAT transmission network port 3211 of the adjacent converter 32.

[0062] As Figure 3 shown, when multiple converters 32 are provided, the first EtherCAT communication interface 21 of the master controller 2 includes a reception network port and a transmission network port. The transmission network port of the first EtherCAT communication interface 21 is connected to the first EtherCAT reception network port 3212 of the converter 32 at the head end. The first EtherCAT transmission network port 3211 of the converter 32 at the head end is connected to the first EtherCAT reception network port 3212 of the adjacent converter 32. The first EtherCAT reception network port 3212 of the converter 32 at the end is connected to the first EtherCAT transmission network port 3211 of the previous adjacent converter 32. The first EtherCAT transmission network port 3211 of the converter 32 at the end is connected to the reception network port of the first EtherCAT communication interface 21.

[0063] As Figure 3 shown, when only one converter 32 is provided, the first EtherCAT communication interface 21 of the master controller 2 includes a reception network port and a transmission network port. The transmission network port of the first EtherCAT communication interface 21 is connected to the first EtherCAT reception network port 3212 of the converter 32. The first EtherCAT transmission network port 3211 of the converter 32 is connected to the reception network port of the first EtherCAT communication interface 21.

[0064] In this embodiment, a master controller 2 with a first EtherCAT communication interface 21 is added to the wind power generation system. A slave controller 324 with a second EtherCAT communication interface 321 is added to the converter 32 of each wind power component 3 in the wind farm. Both the master controller 2 and each slave controller 324 have two network ports for sending and receiving, and the master controller 2 and each slave controller 324 form a ring network.

[0065] After the master controller 2 receives the instruction from the grid dispatching system 5, it can send it to the converter 32 of the wind power component 3 through the on-site ring network, so as to achieve the purpose of quick response and support communication protocols such as Goose.

[0066] In actual work, as Figure 4 shown, when the converter 32 of the wind power component 3 is used for power generation, the wind farm energy management system 1 interacts with the master controller 31 of each wind power component 3 to control the output of the converter 32 of the wind power component 3, and then accesses the power grid 6 through the substation 4. At this time, the converter 32 of the wind power component 3 only receives the control of the master controller 31 of the wind power component 3 and does not respond to the instruction sent by the wind farm energy management system 1 through the first EtherCAT communication interface 21; when the converter 32 of the wind power component 3 does not need to generate power, it can no longer respond to the instruction sent by the master controller 31 of the wind power component 3 according to the requirement. At this time, it can quickly respond to the instruction obtained by the wind farm energy management system 1 from the grid dispatching system 5. At this time, the wind farm energy management system 1 sends the instruction to the master controller 2 with the first EtherCAT communication interface 21 deployed inside the wind power generation system, and the master controller 2 quickly sends the instruction to the slave controller 324 of the converter 32 of each wind power component 3, so as to achieve the purpose of quick response.

[0067] In this embodiment, if the wind farm energy management system 1 selects the master controller 2 to respond to the grid dispatching system 5, then the converters 32 of each wind power component 3 in the wind power generation system will first confirm whether they are under the control of the master controller 31. If they are under the control of the master controller 31 and in the power generation state, they will not respond to the instruction of the grid dispatching system 5 from the first EtherCAT communication interface 21 of the master controller 2. If they are not under the control of the master controller 31, they can accept the instruction from the master controller 2 through their slave controller 324 with the first and second EtherCAT communication interfaces 321 and make a quick response.

[0068] In some embodiments, as Figure 1 and Figure 2As shown, the wind farm energy management system 1 is provided with a first network communication interface 12, and the first network communication interface 12 is responsible for data exchange with the main controller 31. The first network communication interface 12 can be an Ethernet-based communication interface, supporting various standard network protocols to ensure compatibility with different systems.

[0069] The main controller 31 is provided with a second network communication interface 313, and the second network communication interface 313 is used for data exchange with the wind farm energy management system 1. The second network communication interface 313 can also be an Ethernet-based communication interface, supporting high-speed data transmission and real-time communication.

[0070] The first network communication interface 12 and the second network communication interface 313 are communicatively connected. The first network communication interface 12 and the second network communication interface 313 are communicatively connected through a wired or wireless network. This connection can be a direct point-to-point connection or a network connection through a switch or router. The communication connection between the first network communication interface 12 and the second network communication interface 313 enables the wind farm energy management system 1 to send control instructions and scheduling information to the main controller 31 in real time, and at the same time, the main controller 31 can also feedback the operating status of the wind power generation system to the wind farm energy management system 1.

[0071] In the actual operation of the wind farm, the wind farm energy management system 1 can monitor the demand of the power grid 6 and the power generation situation of the wind power generation system in real time through the first network communication interface 12, and then send the corresponding control instructions to the main controller 31 through the second network communication interface 313. The main controller 31 adjusts the operation of the wind power components 3 according to these instructions to optimize the energy output of the wind farm and the supply-demand balance of the power grid 6.

[0072] In this embodiment, the wind farm energy management system 1 and the main controller 31 are communicatively connected through a common network, realizing real-time data exchange between the wind farm energy management system 1 and the main controller 31, improving the response speed of the wind power components 3 to the power grid dispatching system 5; at the same time, the network communication interface supports a variety of network protocols and configurations, enabling the wind power generation system to be flexibly expanded and upgraded according to needs; and the common network communication connection adopts mature network technologies, improving the stability and reliability of communication and reducing the risk of communication failures.

[0073] In some embodiments, as Figure 1 and Figure 2 shown, the wind farm energy management system 1 is provided with a third network communication interface 13, the master controller 2 is provided with a fourth network communication interface 22, and the third network communication interface 13 and the fourth network communication interface 22 are communicatively connected.

[0074] The third network communication interface 13 is responsible for data exchange with the master controller 2. The third network communication interface 13 can be an Ethernet-based communication interface, supporting various standard network protocols to ensure compatibility with different systems.

[0075] The fourth network communication interface 22 is used for data exchange with the wind farm energy management system 1. The fourth network communication interface 22 can also be an Ethernet-based communication interface, supporting high-speed data transmission and real-time communication.

[0076] Ordinary network communication connection is established between the third network communication interface 13 and the fourth network communication interface 22 through a wired or wireless network. This connection can be a direct point-to-point connection or a network connection through a switch or router. The communication connection between the third network communication interface 13 and the fourth network communication interface 22 enables the wind farm energy management system 1 to send control instructions and scheduling information to the master controller 2 in real time, and at the same time, the master controller 2 can also feedback the operating status of the wind farm to the wind farm energy management system 1.

[0077] During the actual operation of the wind power generation system, the wind farm energy management system 1 can monitor the demand of the power grid 6 and the power generation situation of the wind farm in real time through the third network communication interface 13, and then send the corresponding control instructions to the master controller 2 through the fourth network communication interface 22. The master controller 2 adjusts the operation of the wind power components 3 according to these instructions to optimize the energy output of the wind power generation system and the supply-demand balance of the power grid 6.

[0078] In this embodiment, the wind farm energy management system 1 and the master controller 2 are connected through ordinary network communication, realizing real-time data exchange between the wind farm energy management system 1 and the master controller 2, and improving the response speed of the wind power generation system; at the same time, the network communication interface supports multiple network protocols and configurations, enabling the wind power generation system to be flexibly expanded and upgraded according to needs; and the ordinary network communication connection adopts mature network technology, improving the stability and reliability of communication and reducing the risk of communication failures.

[0079] In some embodiments, as Figure 1 shown, the converter 32 is provided with a first CANopen communication interface 322, and the master controller 31 is provided with a second CANopen communication interface 311, and the first CANopen communication interface 322 and the second CANopen communication interface 311 are communicatively connected.

[0080] The first CANopen communication interface 322 is used for data exchange with the master controller 31. The first CANopen communication interface 322 follows the CANopen standard and can achieve high-speed and reliable data communication.

[0081] The second CANopen communication interface 311 is used to establish a communication connection with the first CANopen communication interface 322 of the converter 32. The second CANopen communication interface 311 also follows the CANopen standard to ensure compatibility and communication efficiency with the converter 32.

[0082] The first CANopen communication interface 322 and the second CANopen communication interface 311 are connected via a CAN bus. This connection can be point-to-point or a multi-point network, where the converter 32 and the main controller 31 act as nodes in the network.

[0083] During the actual operation of the wind power generation system, through the first CANopen communication interface 322 and the second CANopen communication interface 311, the main controller 31 can monitor the working status of the converter 32 in real time, such as parameters like current, voltage, and temperature, and perform corresponding control and adjustment based on this information to achieve the stable operation and optimized performance of the wind power generation system.

[0084] In this embodiment, a CANopen protocol connection is established between the converter 32 and the main controller 31 through the first CANopen communication interface 322 and the second CANopen communication interface 311, enabling the main controller 31 to quickly respond to the state changes of the converter 32, improving the accuracy of data transmission, and facilitating the expansion and maintenance of the wind power generation system.

[0085] In some embodiments, as Figure 2 shown, the converter 32 is provided with a first DP communication interface 323, and the main controller 31 is provided with a second DP communication interface 312. The first DP communication interface 323 and the second DP communication interface 312 are in communication connection.

[0086] The communication between the converter 32 and the main controller 31 can be realized through PROFIBUS-DP fieldbus technology.

[0087] The first DP communication interface 323 is responsible for data exchange with the main controller 31. The first DP communication interface 323 follows the PROFIBUS-DP standard and can achieve high-speed and reliable data communication.

[0088] The second DP communication interface 312 is used to establish a communication connection with the first DP communication interface 323 of the converter 32. The second DP communication interface 312 also follows the PROFIBUS-DP standard to ensure compatibility and communication efficiency with the converter 32.

[0089] The first DP communication interface 323 is connected to the second DP communication interface 312 via a PROFIBUS-DP bus. This connection can be point-to-point or a multi-point network, where the converter 32 and the main controller 31 act as nodes in the network.

[0090] During the actual operation of the wind power generation system, communication between the converter 32 and the main controller 31 is achieved through PROFIBUS-DP fieldbus technology. The main controller 31 can monitor the operating status of the converter 32 in real time, such as parameters like current, voltage, and temperature, and perform corresponding control and adjustment based on this information to improve the stable operation and optimize the performance of the wind power generation system.

[0091] The embodiment of the present application also provides an energy storage system, including: an energy storage device and the wind power generation system of any one of the above. The converter 32 of the wind power generation system is electrically connected to the energy storage device.

[0092] According to the energy storage system provided by the embodiment of the present application, by adopting a wind power generation system, the converter 32 in the wind power generation system is set to selectively communicate and connect with the main controller 31 and the general controller 2. When the converter 32 is used for power generation, the converter 32 only receives the control of the main controller 31 of the wind power component 3 and does not respond to the instructions sent by the wind farm energy management system 1 through the general controller 2. When the converter 32 of the wind power component 3 does not need to generate power, it can quickly respond to the instructions obtained by the wind farm energy management system 1 from the grid dispatching system 5. At this time, the wind farm energy management system 1 issues the instructions to the general controller 2 deployed within the wind power generation system, and the general controller 2 quickly sends the instructions to the converters 32 of each wind power component 3, improving the response speed of the wind power component 3 to the grid dispatching system 5.

[0093] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects and are not used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0094] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0095] In the description of the present application, the "first feature" and "second feature" may include one or more of such features.

[0096] In the description of the present application, the meaning of "a plurality of" is two or more.

[0097] In the description of the present application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0098] In the description of the present application, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature.

[0099] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0100] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A wind power generation system, characterized in that, Comprising: A wind farm energy management system having a first interface adapted to communicate with a power grid dispatching system; A master controller communicatively connected to the wind farm energy management system; Wind power components, the wind power components including a master controller and an inverter, the master controller being communicatively connected to the wind farm energy management system, and the inverter being selectively communicatively connected to the master controller and the master controller.

2. The wind power generation system according to claim 1, characterized in that, The master controller is provided with a first EtherCAT communication interface, and the inverter is provided with a second EtherCAT communication interface, and the first EtherCAT communication interface is used to communicate with the second EtherCAT communication interface.

3. The wind power generation system according to claim 2, wherein There are a plurality of the inverters, and the plurality of second EtherCAT communication interfaces of the plurality of inverters are connected in series and then communicatively connected to the master controller.

4. The wind power generation system according to claim 2, wherein The inverter includes a sub-controller, and the sub-controller is provided with the second EtherCAT communication interface.

5. The wind power generation system according to claim 2, characterized in that, The second EtherCAT communication interface includes a first EtherCAT transmission network port and a first EtherCAT reception network port. The first EtherCAT transmission network port is selectively connected to the reception network port of the first EtherCAT communication interface or the first EtherCAT reception network port of an adjacent inverter, and the first EtherCAT reception network port is selectively connected to the transmission network port of the first EtherCAT communication interface or the first EtherCAT transmission network port of an adjacent inverter.

6. The wind power generation system according to claim 1, characterized in that The wind farm energy management system is provided with a first network communication interface, and the master controller is provided with a second network communication interface, and the first network communication interface and the second network communication interface are communicatively connected.

7. The wind power generation system according to claim 1, wherein The wind farm energy management system is provided with a third network communication interface, and the master controller is provided with a fourth network communication interface, and the third network communication interface and the fourth network communication interface are communicatively connected.

8. The wind power generation system according to claim 1, characterized in that, The inverter is provided with a first CANopen communication interface, and the master controller is provided with a second CANopen communication interface, and the first CANopen communication interface and the second CANopen communication interface are communicatively connected.

9. The wind power generation system according to claim 1, characterized in that, The inverter is provided with a first DP communication interface, and the master controller is provided with a second DP communication interface, and the first DP communication interface and the second DP communication interface are communicatively connected.

10. An energy storage system, characterized in that, Comprising: An energy storage device and the wind power generation system according to any one of claims 1-9, wherein the inverter of the wind power generation system is electrically connected to the energy storage device.

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