Method, device and system for transmitting monitoring data of offshore wind turbine generator

Abstract

The invention discloses a method, a device and a system for transmitting monitoring data of an offshore wind turbine generator, which are used for solving the problem of low success rate of offshore communication caused by easy failure of a submarine optical cable and meeting the transmission requirement of the monitoring data of the offshore wind turbine generator under the condition of optical cable failure. The method comprises the following steps: receiving wind turbine generator monitoring data from a subordinate node; determining that the state of an optical fiber path between the node and the superior node is a fault state; and sending the wind turbine generator monitoring data to the superior node through the satellite network side according to the pre-stored address information of the superior node.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology and, in particular, to a method, device and system for transmitting monitoring data of offshore wind turbines. Background Art

[0002] In recent years, with the development of the offshore wind power industry, the number of wind turbines deployed at sea has gradually increased. Since the cost of a single wind turbine is relatively high, and compared with land, the environment faced by offshore wind turbines is more severe and the failure rate is higher, it is particularly important to monitor offshore wind turbines. At present, there are two main ways to obtain monitoring data of offshore wind turbines: manual collection and submarine optical cable transmission. For example, see Figure 1 , is a schematic diagram of the transmission system architecture of offshore wind turbine monitoring data. Among them, the cost of manual collection is high and is greatly restricted by environmental factors. Submarine optical cable transmission mainly relies on the deployed submarine optical cables. Wind turbines periodically transmit monitoring data to offshore booster stations through submarine optical cables. Offshore booster stations are connected to shore equipment as power gathering and transmission hubs on the sea surface. After receiving the monitoring data from the wind turbines, the offshore booster stations also forward the monitoring data to shore equipment through submarine optical cables, so that shore equipment can detect faults in time and solve them. However, due to the instability of the submarine environment, optical cables are prone to failure, which affects the transmission of monitoring data. Summary of the invention

[0003] The present application provides a method, device and system for transmitting monitoring data of an offshore wind turbine group, so as to solve the problem of low success rate of offshore communication due to the easy failure of submarine optical cables.

[0004] In a first aspect, the present application provides a method for transmitting monitoring data of an offshore wind turbine group, the method being applied to any node in a monitoring data transmission link of an offshore wind turbine group, the method comprising:

[0005] Receive wind turbine monitoring data from lower-level nodes;

[0006] Determine that the state of the optical fiber path between the upper node and the upper node is a fault state;

[0007] According to the pre-stored address information of the upper-level node, the wind turbine group monitoring data is sent to the upper-level node via the satellite network.

[0008] In one or more embodiments, before sending the wind turbine group monitoring data to the upper node via the satellite network side, the method further includes:

[0009] Sending a request message to the satellite network side; the request message is used to request to establish a satellite communication connection with the satellite network side;

[0010] Receive response information returned by the satellite network side; the response information is used to indicate that the satellite communication connection is successfully established.

[0011] In one or more embodiments, after sending the wind turbine group monitoring data to the upper node via the satellite network side, the method further includes:

[0012] monitoring the status of the optical fiber path in real time;

[0013] When the state of the optical fiber path changes to a non-failure state, the satellite communication connection is disconnected.

[0014] In one or more embodiments, the wind turbine monitoring data is received by a radio frequency transceiver unit of a microwave module; after receiving the wind turbine monitoring data, the method further includes:

[0015] Sending fault indication information to the upper-level node; the fault indication information is used to indicate that the state of the optical fiber path between the lower-level node and the upper-level node is a fault state.

[0016] In one or more embodiments, the distance between the subordinate node and any one of the nodes is less than a distance threshold; the wind turbine monitoring data is the wind turbine monitoring data of the subordinate node; or, the wind turbine monitoring data is the wind turbine monitoring data of other nodes except the subordinate node.

[0017] In a second aspect, the present application proposes a device for transmitting monitoring data of an offshore wind turbine, the device comprising:

[0018] A communication unit, used for receiving wind turbine monitoring data from a lower-level node;

[0019] A processing unit, used to determine that the state of the optical fiber path between the upper node and the upper node is a fault state;

[0020] The processing unit is further used to instruct the communication unit to send the wind turbine group monitoring data to the upper-level node via the satellite network side according to the pre-stored address information of the upper-level node.

[0021] In one or more embodiments, the communication unit is further configured to:

[0022] Sending a request message to the satellite network side; the request message is used to request to establish a satellite communication connection with the satellite network side;

[0023] Receive response information returned by the satellite network side; the response information is used to indicate that the satellite communication connection is successfully established.

[0024] In one or more embodiments, the processing unit is further configured to:

[0025] monitoring the status of the optical fiber path in real time;

[0026] When the state of the optical fiber path changes to a non-failure state, the satellite communication connection is disconnected.

[0027] In one or more embodiments, the wind turbine monitoring data is received by a radio frequency transceiver unit of a microwave module; the communication unit is further used for:

[0028] Sending fault indication information to the upper-level node; the fault indication information is used to indicate that the state of the optical fiber path between the lower-level node and the upper-level node is a fault state.

[0029] In one or more embodiments, the distance between the subordinate node and any one of the nodes is less than a distance threshold; the wind turbine monitoring data is the wind turbine monitoring data of the subordinate node; or, the wind turbine monitoring data is the wind turbine monitoring data of other nodes except the subordinate node.

[0030] In the third aspect, the present application proposes a transmission system for offshore wind turbine monitoring data, the system comprising a first end node of an offshore wind turbine monitoring data transmission link, a second end node of the offshore wind turbine monitoring data transmission link, and at least one intermediate node of the offshore wind turbine monitoring data transmission link and a satellite; the at least one intermediate node is used to execute the method described in the first aspect.

[0031] In a fourth aspect, an electronic device is provided, the electronic device comprising a controller and a memory. The memory is used to store computer-executable instructions, and the controller executes the computer-executable instructions in the memory to use hardware resources in the controller to perform the operation steps of any possible implementation method of the first aspect.

[0032] In a fifth aspect, a computer-readable storage medium is provided, in which instructions are stored, and when the computer-readable storage medium is run on a computer, the computer executes the methods in the above aspects.

[0033] This application proposes to use satellite Internet technology to carry out effective emergency response and backup for traditional offshore fiber optic communication networks. During the transmission of wind turbine monitoring data, if an optical fiber failure occurs, it is possible to promptly switch to transmitting the monitoring data via satellite, thereby meeting the transmission needs of wind turbine monitoring data during the optical fiber failure and fault repair stages, and making up for the shortcomings of easy damage to submarine optical cables and low communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of a transmission system architecture for monitoring data of an offshore wind turbine;

[0036] Figure 2 A schematic diagram of the architecture of a communication system provided in an embodiment of the present application;

[0037] Figure 3 A schematic flow chart of a method for transmitting monitoring data of an offshore wind turbine provided in an embodiment of the present application;

[0038] Figure 4 A schematic diagram of the architecture of another communication scenario provided in an embodiment of the present application;

[0039] Figure 5 A schematic diagram of a monitoring data transmission process of a wind turbine C provided in an embodiment of the present application;

[0040] Figure 6 A schematic diagram of the structure of a transmission device for monitoring data of an offshore wind turbine provided in an embodiment of the present application;

[0041] Figure 7 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0043] It should be noted that the terms "first", "second", etc. in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0044] The solution proposed in the embodiment of the present application is applied in an offshore communication scenario to achieve barrier-free transmission of monitoring data of wind turbines deployed at sea.

[0045] In order to facilitate understanding of the solutions proposed in the embodiments of the present application, the technical terms involved in the present application are first introduced below:

[0046] (1) Optical Time Domain Reflectometer (OTDR): It is an optoelectronic integrated instrument that uses the backscattering caused by Rayleigh scattering and Fresnel reflection when light is transmitted in an optical fiber. It is widely used in the maintenance, construction and inspection of optical cable lines.

[0047] (2) Microwave communication: Microwave communication, optical fiber communication and satellite communication are collectively referred to as the three main means of communication transmission. Microwave communication generally adopts a point-to-point transmission method, which has the advantages of large transmission capacity, stable transmission quality and convenient maintenance. Usually, a microwave communication node (or microwave communication equipment) consists of a modem unit and a radio frequency transceiver unit. Data is modulated by the modem unit and sent out by the radio frequency transceiver unit.

[0048] Marine energy is a renewable and clean energy. In order to achieve sustainable development, the offshore wind power industry in various countries has developed rapidly, and the capacity of wind turbine equipment has been continuously improved. The increase in the capacity of a single device can increase the scale of wind turbine deployment and save the overall cost of wind power deployment. At present, single 5 megawatt (MW) and 6MW wind turbines have become the norm in the industry. Due to the rising cost of a single wind turbine and the fact that wind turbines are located at sea, the environment they face is more severe than on land and has higher maintenance costs. Therefore, the demand and intensity for monitoring wind turbine equipment has also increased. In recent years, the "intelligence" of offshore wind power has become a development trend, and the demand for data communication networks has continued to increase. For example Figure 1 As shown in the figure, the current maritime communication method mainly relies on submarine optical cables. However, submarine optical cables are laid below the seabed surface. The seabed itself is affected by the ocean current and changes in complex scouring and silting. The formation and evolution of submarine trenches are relatively fast. Under the action of the tide, the submarine optical cables are differentially scoured around them, which can easily cause the submarine optical cables to be unburied (exposed or suspended). If the suspension time is too long, the internal stress amplitude of the pipeline deformation will increase, so that the submarine optical cable may break after a long time, affecting the transmission of monitoring data of offshore wind turbines.

[0049] In view of this, the present application proposes a transmission scheme for offshore wind turbine monitoring data, which effectively supplements and backs up the offshore communication network through satellite Internet technology. During the transmission of wind turbine monitoring data, if there is an optical fiber failure, it can be switched to transmitting the monitoring data via satellite in a timely manner, thereby meeting the communication needs between the sea and the shore during the optical fiber failure and fault repair stage, and making up for the shortcomings of easy damage to submarine optical cables and low communication quality.

[0050] In order to facilitate understanding of the solution of the present application, the communication system to which the solution of the present application is applicable is first introduced. Figure 2 , is a schematic diagram of the architecture of a communication system provided in an embodiment of the present application. Figure 2 As shown, the communication system includes multiple nodes, namely shore equipment, offshore booster station, multiple wind turbines and satellite network side. Figure 2 In the communication system shown, the shore-side equipment can be the upper node of the offshore substation, the wind turbine can be the lower node of the offshore substation, the offshore substation can be the intermediate node of the communication system, the shore-side equipment can be the end node of the communication system, and the wind turbine can also be the end node of the communication system.

[0051] Among them, the shore-side equipment can also be called the shore-side centralized control center, which is used to realize the unified management and monitoring of offshore wind turbines, analyze the monitoring data from each wind turbine, locate the fault of the wind turbine in time and perform corresponding maintenance. Optionally, the functions of the shore-side equipment can be realized by a server or a server cluster. As the core and transmission hub at sea, the offshore booster station is connected to each wind turbine, and is used to receive the monitoring data of each wind turbine and forward the monitoring data to the shore-side equipment.

[0052] In the embodiment of the present application, data can be transmitted between the shore equipment and the offshore booster station via submarine optical cables or via satellites. Data can be transmitted between the offshore booster station and each wind turbine generator set via submarine optical cables or by self-organizing networks based on microwave communications. For example, in the self-organizing network process, at least one wind turbine generator set that is close to the offshore booster station can be selected from multiple wind turbine generator sets as the central node of the self-organizing network. Figure 2 In the example, wind turbine A and wind turbine B are used as central nodes, and the remaining wind turbines are used as user nodes to transmit their respective monitoring data to the central node via microwave, and the central node forwards the data to the offshore booster station.

[0053] It should be noted that Figure 2 The communication system shown is only an example. The present application does not limit the number of wind turbines and satellite network included in the communication system, and does not limit the central node selected in the self-organizing network process. Figure 2 In the example, wind turbine group A and wind turbine group B are selected as central nodes for demonstration.

[0054] Next, combine Figure 2 The communication system shown is used to introduce the solution of the present application. Figure 3, is a schematic diagram of a method for transmitting monitoring data of an offshore wind turbine provided in an embodiment of the present application. The method can Figure 2 The intermediate node shown is implemented as an offshore booster station. Figure 3 The offshore booster station is used as an example to introduce the implementation. Figure 3 The method flow shown may also be executed by specific components included in the offshore booster station, such as a processor, a transceiver and other components included in the offshore booster station, and this application does not limit this. Figure 3 The method flow shown specifically includes:

[0055] 301, receiving monitoring data of a first wind turbine generator system.

[0056] Optionally, the first wind turbine generator set may be Figure 2 Any one of the plurality of wind turbines included in the communication system shown,

[0057] 302, determining that the state of the optical fiber path between the offshore booster station and the shore-side equipment is a fault state.

[0058] For example, after receiving the monitoring data of the first wind turbine generator set, the offshore booster station may detect the state of the optical fiber path between the offshore booster station and the shore equipment through the deployed OTDR, and determine that the current optical fiber path is in a fault state.

[0059] 303, according to the pre-stored address information of the shore-side device, the monitoring data is sent to the shore-side device via the satellite network.

[0060] Exemplarily, when determining that the optical fiber path between the offshore booster station and the shore equipment is faulty, the offshore booster station can send a request message to the satellite network side to request to establish a satellite communication connection with the satellite network side. Further, when receiving the response message returned by the satellite network side, it is determined that the satellite communication connection is successfully established, so that the monitoring data of the first wind turbine group can be packaged, and its target address is set to the address of the shore equipment (for example, it can be the IP address of the shore equipment), and the data packet is transmitted to the satellite network side through the satellite communication connection, and the satellite network side can forward the data packet to the shore equipment. Optionally, when forwarding the data packet, the satellite network side can send the data packet to the satellite ground receiving station, and the ground receiving station sends the data packet to the shore equipment according to the target address indicated in the data packet.

[0061] Based on the above scheme, this application proposes to use satellite Internet technology to carry out effective emergency response and backup of traditional offshore fiber optic communication networks. During the transmission of wind turbine monitoring data, if an optical fiber failure occurs, it can be switched to transmitting monitoring data via satellite in a timely manner, thereby meeting the communication needs between the sea and the shore during the optical fiber failure and fault repair stage, and making up for the shortcomings of easy damage to submarine optical cables and low communication quality.

[0062] In one or more embodiments, the offshore booster station can detect whether the optical fiber path between the offshore booster station and the shore equipment is faulty through OTDR after receiving the monitoring data of the first wind turbine group. Alternatively, the offshore booster station can also detect whether the optical fiber path between the offshore booster station and the shore equipment is faulty in real time, and record the fault information when the fault is determined, so that when the monitoring data of the first wind turbine group is received, there is no need to perform further detection, and the monitoring data can be directly transmitted to the shore equipment through the satellite network.

[0063] In one possible scenario, after determining that the optical fiber path between the offshore booster station and the shore equipment is faulty, the offshore booster station can also monitor the status of the optical fiber path in real time through OTDR. Furthermore, when determining that the status of the optical fiber path has become a non-faulty state, the offshore booster station can disconnect the satellite communication connection and use the optical fiber path to transmit data again to improve data transmission efficiency.

[0064] In some embodiments, the offshore booster station can also determine whether the optical fiber path between the wind turbines is faulty by receiving the monitoring data of the first wind turbine group. In one possible case, when the monitoring data of the first wind turbine group is received by the radio frequency transceiver unit of the microwave module, the offshore booster station can determine that the optical fiber path between it and the first wind turbine group is faulty. In this case, the offshore booster station can further determine whether the first wind turbine group is a central node in a self-organizing network based on microwave communication. If the first wind turbine group is not a central node, and the data of the first wind turbine group is forwarded through the central node, the offshore booster station can determine that the optical fiber path between it and the central node and the optical fiber path between the intermediate node and the first wind turbine group are both faulty. In another possible case, when the monitoring data of the first wind turbine group is received through the optical fiber path between the central node and the offshore booster station, the offshore booster station can determine that the optical fiber path between it and the central node is normal, but the optical fiber path between the intermediate node and the first wind turbine group is faulty. Optionally, when determining the fault information in the above two cases, the offshore booster station can also send the fault information to the shore equipment, which is used for the shore equipment to prompt the technicians to repair in time.

[0065] For example, the above embodiments may be performed by an offshore booster station, or may be implemented by specific components included in the offshore booster station. Figure 4, which is an architectural diagram of another communication scenario provided in an embodiment of the present application. Among them, the shore-side equipment includes an intelligent gateway and a satellite terminal. The intelligent gateway is used to transmit data with the offshore booster station through an optical fiber path, and the satellite terminal is used to transmit data with the offshore booster station through a satellite network. The offshore booster station includes a satellite terminal, an intelligent gateway and a microwave device. The satellite terminal in the offshore booster station is used to communicate with the satellite terminal included in the shore-side equipment through a satellite network. The intelligent gateway included in the offshore booster station is used to communicate with the intelligent gateway included in the shore-side equipment and the intelligent gateway included in each wind turbine set through an optical fiber path. The microwave equipment is used to communicate with the microwave equipment of each wind turbine set when the optical fiber path fails. It should be noted that in Figure 4 In the communication system shown, wind turbine group A and wind turbine group B are used as central nodes of a microwave communication ad hoc network, in which a central station of microwave equipment is deployed, and user stations of microwave equipment are deployed with the wind turbine group and the offshore booster station.

[0066] The following combination Figure 4 The communication system shown in the figure further introduces the solution of the present application. Figure 5 , is a schematic diagram of a monitoring data transmission process of a wind turbine C provided in an embodiment of the present application. Among them, the optical fiber path between the wind turbine C and the central node (including wind turbine A and wind turbine B) fails, the optical fiber path between the central node and the offshore booster station fails, and the optical fiber path between the offshore booster station and the shore equipment fails. Figure 5 As shown, the transmission process of the monitoring data of wind turbine C is as follows: the microwave equipment of wind turbine C sends the monitoring data to the microwave equipment of wind turbine A (it can also be wind turbine B, here taking wind turbine A as an example). The microwave equipment of wind turbine A forwards the monitoring data to the microwave equipment of the offshore booster station. The microwave equipment of the offshore booster station transmits the monitoring data to the satellite terminal of the offshore booster station through an internal link. The satellite terminal of the offshore booster station transmits the monitoring data to the satellite terminal of the shore equipment through the satellite network side.

[0067] Based on the same concept as the above method, see Figure 6 , is a transmission device 600 for monitoring data of an offshore wind turbine provided in an embodiment of the present application, the device 600 is used to implement each step in the above method, and in order to avoid repetition, it will not be described again here. The device 600 includes: a communication unit 601 and a processing unit 602.

[0068] The communication unit 601 is used to receive wind turbine monitoring data from the lower-level node;

[0069] The processing unit 602 is used to determine that the state of the optical fiber path between the upper node and the upper node is a fault state;

[0070] The processing unit 602 is further configured to instruct the communication unit 601 to send the wind turbine monitoring data to the upper-level node via the satellite network according to the pre-stored address information of the upper-level node.

[0071] In one or more embodiments, the communication unit 601 is further configured to:

[0072] Sending a request message to the satellite network side; the request message is used to request to establish a satellite communication connection with the satellite network side;

[0073] Receive response information returned by the satellite network side; the response information is used to indicate that the satellite communication connection is successfully established.

[0074] In one or more embodiments, the processing unit 602 is further configured to:

[0075] monitoring the status of the optical fiber path in real time;

[0076] When the state of the optical fiber path changes to a non-failure state, the satellite communication connection is disconnected.

[0077] In one or more embodiments, the wind turbine monitoring data is received by a radio frequency transceiver unit of a microwave module; the communication unit 601 is further used for:

[0078] Sending fault indication information to the upper-level node; the fault indication information is used to indicate that the state of the optical fiber path between the lower-level node and the upper-level node is a fault state.

[0079] In one or more embodiments, the distance between the subordinate node and any one of the nodes is less than a distance threshold; the wind turbine monitoring data is the wind turbine monitoring data of the subordinate node; or, the wind turbine monitoring data is the wind turbine monitoring data of other nodes except the subordinate node.

[0080] Figure 7 The electronic device 700 provided in the embodiment of the present application is shown in FIG. 7. The electronic device 700 in the embodiment of the present application may further include a communication interface 703, which is, for example, a network port, through which the electronic device may transmit data. Optionally, the communication interface 703 may be used to implement the above Figure 6 The function of the communication unit 601.

[0081] In the embodiment of the present application, the memory 702 stores instructions that can be executed by at least one controller 701. The at least one controller 701 can be used to execute each step in the above method by executing the instructions stored in the memory 702. For example, the controller 701 can implement the above Figure 6The function of the processing unit 602 in.

[0082] Among them, the controller 701 is the control center of the electronic device, which can use various interfaces and lines to connect various parts of the entire electronic device, by running or executing instructions stored in the memory 702 and calling data stored in the memory 702. Optionally, the controller 701 may include one or more processing units, and the controller 701 may integrate an application controller and a modem controller, wherein the application controller mainly processes the operating system and application programs, etc., and the modem controller mainly processes wireless communications. It is understandable that the above-mentioned modem controller may not be integrated into the controller 701. In some embodiments, the controller 701 and the memory 702 may be implemented on the same chip, and in some embodiments, they may also be implemented separately on independent chips.

[0083] The controller 701 may be a general controller, such as a central processing unit (CPU), a digital signal controller, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general controller may be a microcontroller or any conventional controller, etc. The steps performed by the data statistics platform disclosed in the embodiments of the present application may be performed directly by a hardware controller, or by a combination of hardware and software modules in the controller.

[0084] The memory 702 is a non-volatile computer-readable storage medium that can be used to store non-volatile software programs, non-volatile computer executable programs and modules. The memory 702 may include at least one type of storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory, a random access memory (English: Random Access Memory, referred to as: RAM), a static random access memory (English: Static Random Access Memory, referred to as: SRAM), a programmable read-only memory (English: Programmable Read Only Memory, referred to as: PROM), a read-only memory (English: Read Only Memory, referred to as: ROM), an electrically erasable programmable read-only memory (English: Electrically Erasable Programmable Read-Only Memory, referred to as: EEPROM), a magnetic memory, a disk, an optical disk, etc. The memory 702 is any other medium that can be used to carry or store a desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. The memory 702 in the embodiment of the present application can also be a circuit or any other device that can realize a storage function, for storing program instructions and / or data.

[0085] By designing and programming the controller 701, for example, the code corresponding to the method introduced in the above embodiment can be solidified into the chip, so that the chip can execute the steps of the above method when running. How to design and program the controller 701 is a technology well known to those skilled in the art and will not be repeated here.

[0086] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0087] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a controller of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the controller of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0088] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0089] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0090] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0091] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A method for transmitting monitoring data of an offshore wind turbine, characterized in that: The method comprises: Receive wind turbine monitoring data from lower-level nodes; Determine that the state of the optical fiber path between the upper node and the upper node is a fault state; According to the pre-stored address information of the upper-level node, the wind turbine group monitoring data is sent to the upper-level node via the satellite network.

2. The method according to claim 1, characterized in that Before sending the wind turbine group monitoring data to the upper node via the satellite network side, the method further includes: Sending a request message to the satellite network side; the request message is used to request to establish a satellite communication connection with the satellite network side; Receive response information returned by the satellite network side; the response information is used to indicate that the satellite communication connection is successfully established.

3. The method according to claim 2, characterized in that After sending the wind turbine group monitoring data to the upper node via the satellite network side, the method further includes: monitoring the status of the optical fiber path in real time; When the state of the optical fiber path changes to a non-failure state, the satellite communication connection is disconnected.

4. The method according to any one of claims 1 to 3, characterized in that: The wind turbine monitoring data is received by a radio frequency transceiver unit of a microwave module; after receiving the wind turbine monitoring data, the method further includes: Sending fault indication information to the upper node; the fault indication information is used to indicate that the state of the optical fiber path between the lower node and the upper node is a fault state.

5. The method according to claim 4, characterized in that The distance between the subordinate node and any of the nodes is less than a distance threshold; the wind turbine group monitoring data is the wind turbine group monitoring data of the subordinate node; or, the wind turbine group monitoring data is the wind turbine group monitoring data of other nodes except the subordinate node.

6. A device for transmitting monitoring data of an offshore wind turbine, characterized in that: The device comprises: A communication unit, used for receiving wind turbine monitoring data from a lower-level node; A processing unit, used for determining that the state of the optical fiber path between the upper node and the upper node is a fault state; The processing unit is further used to instruct the communication unit to send the wind turbine group monitoring data to the upper-level node via the satellite network side according to the pre-stored address information of the upper-level node.

7. The device according to claim 6, characterized in that The communication unit is further used for: Sending a request message to the satellite network side; the request message is used to request to establish a satellite communication connection with the satellite network side; Receiving response information returned by the satellite network side; The response information is used to indicate that the satellite communication connection is established successfully.

8. A transmission system for monitoring data of an offshore wind turbine, characterized in that: include: A first end node of an offshore wind turbine group monitoring data transmission link, a second end node of the offshore wind turbine group monitoring data transmission link, at least one intermediate node of the offshore wind turbine group monitoring data transmission link, and a satellite; the at least one intermediate node is used to execute the method described in any one of claims 1-5.

9. An electronic device, characterized in that: include: Memory and controller; A memory for storing program instructions; A controller is used to call the program instructions stored in the memory and execute the method according to any one of claims 1 to 5 according to the obtained program.

10. A computer storage medium storing computer executable instructions, characterized in that: The computer executable instructions are used to execute the method according to any one of claims 1-5.

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