CN113738592A - Data monitoring device and method for wind turbine generator - Google Patents
Data monitoring device and method for wind turbine generator Download PDFInfo
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- CN113738592A CN113738592A CN202010464248.9A CN202010464248A CN113738592A CN 113738592 A CN113738592 A CN 113738592A CN 202010464248 A CN202010464248 A CN 202010464248A CN 113738592 A CN113738592 A CN 113738592A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/30—Lightning protection
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/30—Electric signal transmission systems in which transmission is by selection of one or more conductors or channels from a plurality of conductors or channels
- G08C19/32—Electric signal transmission systems in which transmission is by selection of one or more conductors or channels from a plurality of conductors or channels of one conductor or channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/38—Services specially adapted for particular environments, situations or purposes for collecting sensor information
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The present disclosure relates to a data monitoring device and method for a wind turbine, the device comprising: monitoring module and wireless access point AP module, the AP module, a data acquisition instruction for receiving the server sends, and send the data acquisition instruction to monitoring module according to the target communication mode, monitoring module, a vibration acceleration and the operating mode data of the blade of wind turbine generator system are monitored according to the data acquisition instruction, monitoring module, still be used for with vibration acceleration and operating mode data, send to the AP module according to the target communication mode, the AP module, still be used for with received vibration acceleration and operating mode data transmission to the server. This is disclosed through vibration acceleration and the operating mode data that monitoring module will gather, send to the AP module according to wireless communication mode or wired communication mode to send to the server by the AP module, can reduce the interference among the data communication process, improve the stability of monitoring.
Description
Technical Field
The disclosure relates to the technical field of electronic monitoring, in particular to a data monitoring device and method for a wind turbine generator.
Background
With the increasing energy crisis and environmental pollution problems, the application of new energy has become a trend and trend of future development. Wind energy is a green and environment-friendly renewable resource, and is increasingly paid more attention from countries in the world. Most of wind turbines are installed in areas with rich wind energy, the climatic conditions of the areas are severe, and blades of the wind turbines can bear the wind force action of irregular variable speed and variable load in the working process, so that the blades gradually generate surface damage, such as coating peeling, pitting corrosion, slight cracks and the like, and serious cracks can be generated on the blades, even the blades are broken, and serious economic loss is caused. Meanwhile, the blades are also vulnerable to sudden natural disasters, such as lightning strikes, blade icing and the like, which may cause cracks on the blades or unbalanced loads on the whole machine. Therefore, the working state of the blade needs to be monitored in real time, the fault of the blade needs to be discovered in time, and the loss such as shutdown is avoided.
At present, a blade state monitoring system is mainly deployed on a wind turbine generator to acquire vibration data of blades and working condition parameters of the wind turbine generator so as to acquire the states of the blades. After the data acquisition is completed, the blade state monitoring system needs to send the acquired data to the server through a communication link. However, the stability and reliability of the communication link are low, and the communication link is easily affected by the interference of the external environment and the electromagnetic interference, and cannot meet the monitoring requirement.
Disclosure of Invention
In order to solve the problems in the prior art, the present disclosure provides a data monitoring device and method for a wind turbine generator.
In order to achieve the above object, according to a first aspect of the embodiments of the present disclosure, there is provided a data monitoring device for a wind turbine, the device including: the monitoring system comprises a monitoring module and a wireless Access Point (AP) module, wherein the monitoring module is arranged on a hub of the wind turbine generator, the AP module is arranged in an electrical cabinet of the wind turbine generator, the monitoring module is connected with the AP module through a cable, the AP module is connected with a unit controller arranged in the electrical cabinet through a cable, and the monitoring module is connected with the AP module through a wireless network;
the AP module is used for receiving a data acquisition instruction sent by a server and sending the data acquisition instruction to the monitoring module according to a target communication mode, wherein the target communication mode is as follows: a wireless communication mode, or a wired communication mode;
the monitoring module is used for receiving the data acquisition instruction according to the target communication mode, monitoring the vibration acceleration and working condition data of the blades of the wind turbine generator according to the data acquisition instruction, wherein the working condition data are acquired by the AP module from the unit controller and are sent to the monitoring module according to the target communication mode;
the monitoring module is further configured to send the vibration acceleration and the working condition data to the AP module according to the target communication mode;
and the AP module is also used for sending the received vibration acceleration and the working condition data to the server.
Optionally, the monitoring module is further configured to:
determining whether transmission parameters in the target communication mode meet preset conditions;
if the transmission parameter does not meet the preset condition and the target communication mode is a wireless communication mode, switching the target communication mode into a wired communication mode;
and if the transmission parameters meet the preset conditions and the target communication mode is a wired communication mode, switching the target communication mode into a wireless communication mode.
Optionally, the apparatus further includes a serial server disposed in the electrical cabinet; the monitoring module is connected with the serial server through a serial cable, and the serial server is connected with the AP module through a network cable;
if the target communication mode is a wired communication mode, the AP module is used for sending the data acquisition instruction to the serial server through a network cable so that the serial server sends the data acquisition instruction to the monitoring module through a serial cable;
the monitoring module is used for sending the vibration acceleration and the working condition data to the serial server through a serial port cable, so that the serial server sends the vibration acceleration and the working condition data to the AP module through a network cable.
Optionally, the monitoring module includes an AP sub-module, and the AP sub-module is connected to the AP module through a wireless network;
if the target communication mode is a wireless communication mode, the AP module is used for sending the data acquisition instruction to the AP submodule through a wireless network;
and the AP submodule is used for sending the vibration acceleration and the working condition data to the AP module through a wireless network.
Optionally, the transmission parameter includes at least one of a packet loss ratio, a signal strength, and a signal delay, and the preset condition includes one or more of the following:
the packet loss rate is less than or equal to a first threshold;
the signal strength is greater than or equal to a second threshold;
the signal delay is less than or equal to a third threshold.
Optionally, the device further comprises a lightning protection module arranged in the electrical cabinet, the monitoring module passes through a slip ring of the wind turbine generator to be connected with the lightning protection module through a cable, and the lightning protection module is connected with the AP module through a cable;
the lightning protection module is used for discharging current generated on the cable when the blade is struck by lightning.
Optionally, the AP module includes an external AP antenna, and the external AP antenna is disposed outside the electrical cabinet.
Optionally, the monitoring module is configured to encrypt the vibration acceleration and the working condition data, and send the encrypted vibration acceleration and the encrypted working condition data to the AP module through the wireless network;
and the AP module is also used for decrypting the encrypted vibration acceleration and the working condition data so as to obtain the vibration acceleration and the working condition data and sending the vibration acceleration and the working condition data to the server.
According to a second aspect of the embodiments of the present disclosure, there is provided a data monitoring method for a wind turbine, which is applied to a data monitoring device for a wind turbine, the device including: the monitoring system comprises a monitoring module and an AP module, wherein the monitoring module is arranged on a hub of the wind turbine generator, the AP module is arranged in an electrical cabinet of the wind turbine generator, the monitoring module is connected with the AP module through a cable, the AP module is connected with a unit controller arranged in the electrical cabinet through a cable, the monitoring module is connected with the AP module through a wireless network, and the method comprises the following steps:
receiving a data acquisition instruction sent by a server through the AP module, and sending the data acquisition instruction to the monitoring module according to a target communication mode, wherein the target communication mode is as follows: a wireless communication mode, or a wired communication mode;
receiving the data acquisition instruction through the monitoring module according to the target communication mode, and monitoring the vibration acceleration and working condition data of the blades of the wind turbine generator according to the data acquisition instruction, wherein the working condition data are acquired by the AP module from the unit controller and are sent to the monitoring module according to the target communication mode;
sending the vibration acceleration and the working condition data to the AP module through the monitoring module according to the target communication mode;
and sending the received vibration acceleration and the working condition data to the server through the AP module.
Optionally, the method further comprises:
determining, by the monitoring module, whether transmission parameters in the target communication mode satisfy a preset condition;
if the transmission parameter does not meet the preset condition and the target communication mode is a wireless communication mode, switching the target communication mode into a wired communication mode through the monitoring module;
and if the transmission parameters meet the preset conditions and the target communication mode is a wired communication mode, switching the target communication mode into a wireless communication mode through the monitoring module.
Optionally, the apparatus further includes a serial server disposed in the electrical cabinet; the monitoring module pass through the serial ports cable with serial port server connects, serial port server pass through the net twine with the AP module is connected, through the data acquisition instruction that the AP module received the server and sent, and with the data acquisition instruction according to the target communication mode send to monitoring module includes:
if the target communication mode is a wired communication mode, the data acquisition instruction is sent to the serial server through the AP module through a network cable, so that the serial server sends the data acquisition instruction to the monitoring module through a serial cable;
the sending the vibration acceleration and the working condition data to the AP module through the monitoring module according to the target communication mode comprises the following steps:
the vibration acceleration and the working condition data are sent to the serial port server through the monitoring module through a serial port cable, so that the vibration acceleration and the working condition data are sent to the AP module through a network cable by the serial port server.
Optionally, the monitoring module includes an AP sub-module, the AP sub-module is connected to the AP module through a wireless network, the AP module receives a data acquisition instruction sent by the server, and sends the data acquisition instruction to the monitoring module according to a target communication mode, including:
if the target communication mode is a wireless communication mode, the data acquisition instruction is sent to the AP sub-module through the AP module through a wireless network;
the sending the vibration acceleration and the working condition data to the AP module through the monitoring module according to the target communication mode comprises the following steps:
and sending the vibration acceleration and the working condition data to the AP module through the AP submodule through a wireless network.
Optionally, the transmission parameter includes at least one of a packet loss ratio, a signal strength, and a signal delay, and the preset condition includes one or more of the following:
the packet loss rate is less than or equal to a first threshold;
the signal strength is greater than or equal to a second threshold;
the signal delay is less than or equal to a third threshold.
Optionally, the apparatus further includes a lightning protection module disposed in the electrical cabinet, the monitoring module passes through a slip ring of the wind turbine generator to be connected to the lightning protection module through a cable, and the lightning protection module is connected to the AP module through a cable, and the method further includes:
bleeding, by the lightning protection module, current generated on the cable when the blade is struck by a lightning.
Optionally, the AP module includes an external AP antenna, and the external AP antenna is disposed outside the electrical cabinet.
Optionally, the method further comprises:
encrypting the vibration acceleration and the working condition data through the monitoring module, and sending the encrypted vibration acceleration and the encrypted working condition data to the AP module through the wireless network;
and decrypting the encrypted vibration acceleration and the encrypted working condition data through the AP module to acquire the vibration acceleration and the working condition data, and sending the vibration acceleration and the working condition data to the server.
Through above-mentioned technical scheme, wind turbine generator's data monitoring device in this disclosure includes: monitoring module and wireless access point AP module, monitoring module sets up on wind turbine generator's wheel hub, the AP module sets up in wind turbine generator's regulator cubicle, monitoring module passes through the cable and is connected with the AP module, the AP module passes through the cable and is connected with the unit controller of setting in the regulator cubicle, monitoring module passes through wireless network and is connected with the AP module, a data acquisition instruction for receiving server sends, and send the data acquisition instruction to monitoring module according to the target communication mode, wherein, the target communication mode is: the monitoring module is used for receiving a data acquisition instruction according to a target communication mode and monitoring the vibration acceleration and the working condition data of the blades of the wind turbine generator according to the data acquisition instruction, the working condition data are acquired by the AP module from the unit controller and are sent to the monitoring module according to the target communication mode, and the monitoring module is also used for sending the vibration acceleration and the working condition data to the AP module according to the target communication mode and sending the received vibration acceleration and the working condition data to the server. This is disclosed through vibration acceleration and the operating mode data that monitoring module will gather, send to the AP module according to wireless communication mode or wired communication mode to send to the server by the AP module, can reduce the interference among the data communication process, under the prerequisite of the promptness of guaranteeing the monitoring, improve the stability and the reliability of monitoring.
Additional features and advantages of the disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:
FIG. 1 is a block diagram illustrating a data monitoring device for a wind turbine according to an exemplary embodiment;
FIG. 2 is a block diagram illustrating another wind turbine data monitoring device according to an exemplary embodiment;
FIG. 3 is a block diagram illustrating another wind turbine data monitoring device according to an exemplary embodiment;
FIG. 4 is a block diagram illustrating yet another wind turbine data monitoring apparatus according to an exemplary embodiment;
FIG. 5 is a flow diagram illustrating a method of data monitoring of a wind turbine generator according to an exemplary embodiment;
FIG. 6 is a flow diagram illustrating another method of data monitoring of a wind turbine according to an exemplary embodiment;
FIG. 7 is a flow diagram illustrating another method of data monitoring of a wind turbine according to an exemplary embodiment;
FIG. 8 is a flow chart illustrating yet another method of data monitoring of a wind turbine generator according to an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1 is a block diagram illustrating a data monitoring apparatus of a wind turbine according to an exemplary embodiment. As shown in fig. 1, the apparatus 100 includes: the monitoring system comprises a monitoring module 101 and an AP (Access Point) module 102, wherein the monitoring module 101 is arranged on a hub 103 of the wind turbine generator, the AP module 102 is arranged in an electrical cabinet 104 of the wind turbine generator, the monitoring module 101 is connected with the AP module 102 through a cable, the AP module 102 is connected with a unit controller 105 arranged in the electrical cabinet 104 through a cable, and the monitoring module 101 is connected with the AP module 102 through a Wireless network.
The AP module 102 is configured to receive a data acquisition instruction sent by the server, and send the data acquisition instruction to the monitoring module 101 according to a target communication mode, where the target communication mode is: a wireless communication mode, or a wired communication mode.
For example, when the blade state of the wind turbine needs to be monitored, a data acquisition instruction may be issued to the AP module 102 through the server, and the AP module 102 sends the received data acquisition instruction to the monitoring module 101 according to a target communication mode. The AP module 102 may be an independent industrial AP, and the target communication mode may be a wireless communication mode or a wired communication mode. When the target communication mode is the wireless communication mode, the AP module 102 and the monitoring module 101 perform data communication through a wireless network, and when the target communication mode is the wired communication mode, the AP module 102 and the monitoring module 101 perform data communication through a cable, where the cable may be a serial cable or an industrial network cable, for example.
The monitoring module 101 is configured to receive a data acquisition instruction according to a target communication mode, and monitor vibration acceleration and working condition data of blades of the wind turbine generator according to the data acquisition instruction, where the working condition data is acquired by the AP module 102 from the unit controller 105 and is sent to the monitoring module 101 according to the target communication mode.
For example, the monitoring module 101 may receive a data acquisition instruction according to a target communication mode, and acquire a vibration acceleration acquired by an acceleration sensor located in a blade of the wind turbine generator according to the data acquisition instruction according to a first sampling frequency and a preset sampling duration. While collecting the vibration acceleration, the monitoring module 101 may obtain working condition data from the AP module 102 according to the target communication mode according to the second sampling frequency and the preset sampling duration, where the working condition data is obtained by the AP module 102 from the unit controller 105. It can be understood that the unit controller 105 acquires the operating condition data collected by various sensors (e.g., speed sensor, temperature sensor, power meter, etc.) disposed inside the wind turbine according to the second sampling frequency and the preset sampling duration, and sends the operating condition data to the monitoring module 101 through the AP module 102 in the target communication mode. The cell Controller 105 may be, for example, a PLC (Programmable Logic Controller), and the operating condition data may include: wind speed, ambient temperature, power of the wind turbine, pitch angle and generator speed.
The monitoring module 101 collects the vibration acceleration and the working condition data through the first sampling frequency and the second sampling frequency respectively in the preset sampling duration, so that the collected vibration acceleration and the collected working condition data can be synchronized, and the accuracy of monitoring the blade state is ensured. For example, in the case that the target communication mode is the wired communication mode, when the first sampling frequency is 100Hz, the second sampling frequency is 10Hz, and the preset sampling duration is 200s, the monitoring module 101 needs to acquire the vibration acceleration and the operating condition data within 200s, and the monitoring module 101 may acquire 100 vibration accelerations and 10 operating condition data per second. That is to say, every time 1 operating mode data is gathered, 10 vibration accelerations corresponding to the operating mode data can be gathered, each operating mode data can be enabled to correspond to the same number of vibration accelerations, and therefore synchronization of the vibration accelerations and the operating mode data is achieved.
The monitoring module 101 is further configured to send the vibration acceleration and the working condition data to the AP module 102 according to the target communication mode.
The AP module 102 is further configured to send the received vibration acceleration and working condition data to a server.
Specifically, the AP module 102 may be connected to a main control ring network of the wind farm through an industrial network cable, and is connected to a server located in the booster station through the main control ring network. After the vibration acceleration and the working condition data are collected, the monitoring module 101 may send the vibration acceleration and the working condition data to the AP module 102 according to a target communication mode. After receiving the vibration acceleration and condition data, the AP module 102 may send the vibration acceleration and condition data to a server, which may be a data server, for example. Considering the bandwidth occupation limitation of the master ring network, the maximum bandwidth occupation of the target communication mode can be limited to 50 kbytes/second.
It should be noted that, the target communication mode may be preset according to actual requirements, and is described by taking as an example that a communication mode with a high data transmission speed is preferentially selected, where in a case that the target communication mode is a wired communication mode, when the monitoring module 101 collects vibration accelerations of 8 channels, the first sampling frequency is 128Hz, the second sampling frequency is 10Hz, the preset sampling time duration is 200s, the operating condition data includes wind speed, ambient temperature, power of the wind turbine, pitch angle, and generator speed, and data collected by the monitoring module 101 are all 32-bit floating point type data, an amount N of data collected by the monitoring module 101 at one time is (f 1N 1T + f 2N 2T) k (128N 8 + 10N 2T) k is 6873600 bits, where f1 is the first sampling frequency, and N1 is the number of acceleration of the vibration channels collected by the monitoring module 101, t is a preset sampling duration, f2 is a second sampling frequency, n2 is the type of the working condition data acquired by the monitoring module 101, and k is the number of bits of the data. If the baud rate of the wired communication mode is 115200 bits, the transmission time t1 of the data acquired by the monitoring module 101 at one time is N/S6873600/115200S 59.7S, where S is the baud rate of the wired communication mode. In the case that the target communication mode is the wireless communication mode, when the bandwidth occupied per second between the AP module 102 and the monitoring module 101 is 50 kbytes, the transmission time t2 of the data collected by the monitoring module 101 is 6873600/(50 1024 8) 16.78s, where B is the number of bits occupied per second between the AP module 102 and the monitoring module 101. It can be seen that, when the communication mode with the high data transmission speed is preferentially selected, the target communication mode may be set as the wireless communication mode by default. Meanwhile, during the data communication between the AP module 102 and the monitoring module 101, the target communication mode may also be switched according to a preset rule, for example, when the wireless network is unstable, the target communication mode may be switched from the wireless communication mode to the wired communication mode. When the slip ring of the wind turbine generator has no redundant channel, the monitoring module 101 and the AP module 102 may perform data communication only in a wireless communication mode, that is, the target communication mode only includes a wireless communication mode.
When the slip ring of the wind turbine generator has an extra channel and the nacelle 200 of the wind turbine generator (the electrical cabinet 104 is disposed in the nacelle 200) is made of a shielding material (for example, cast iron), the monitoring module 101 and the AP module 102 cannot perform data communication through a wireless network, so that the monitoring module 101 and the AP module 102 can perform data communication only in a wired communication mode, that is, the target communication mode only includes a wired communication mode. Under the condition that the target communication mode is the wired communication mode, cables between the AP module 102 and the monitoring module 101 need to pass through a slip ring channel of the wind turbine, and the highest baud rate of communication can be set to be no more than 115200 bits, so that possible interference between the AP module 102 and the monitoring module 101 when the wind turbine operates is reduced.
To sum up, the data monitoring device of wind turbine generator in this disclosure includes: monitoring module and wireless access point AP module, monitoring module sets up on wind turbine generator's wheel hub, the AP module sets up in wind turbine generator's regulator cubicle, monitoring module passes through the cable and is connected with the AP module, the AP module passes through the cable and is connected with the unit controller of setting in the regulator cubicle, monitoring module passes through wireless network and is connected with the AP module, a data acquisition instruction for receiving server sends, and send the data acquisition instruction to monitoring module according to the target communication mode, wherein, the target communication mode is: the monitoring module is used for receiving a data acquisition instruction according to a target communication mode and monitoring the vibration acceleration and the working condition data of the blades of the wind turbine generator according to the data acquisition instruction, the working condition data are acquired by the AP module from the unit controller and are sent to the monitoring module according to the target communication mode, and the monitoring module is also used for sending the vibration acceleration and the working condition data to the AP module according to the target communication mode and sending the received vibration acceleration and the working condition data to the server. This is disclosed through vibration acceleration and the operating mode data that monitoring module will gather, send to the AP module according to wireless communication mode or wired communication mode to send to the server by the AP module, can reduce the interference among the data communication process, under the prerequisite of the promptness of guaranteeing the monitoring, improve the stability and the reliability of monitoring.
Optionally, the monitoring module 101 is further configured to:
it is determined whether the transmission parameter in the target communication mode satisfies a preset condition.
And if the transmission parameters do not meet the preset conditions and the target communication mode is the wireless communication mode, switching the target communication mode into the wired communication mode.
In one scenario, when the wireless network is unstable, stable data communication between the AP module 102 and the monitoring module 101 is not possible. In order to improve stability of data communication, the monitoring module 101 may determine whether to switch the target communication mode by detecting a state of the wireless network between the AP module 102 and the monitoring module 101. When the state of the wireless network is stable, the monitoring module 101 may switch the target communication mode to the wireless communication mode, and when the state of the wireless network is unstable, the monitoring module 101 may switch the target communication mode to the wired communication mode. For example, the monitoring module 101 may determine whether to switch the target communication mode by determining whether the transmission parameter in the target communication mode satisfies a preset condition. When the target communication mode is the wireless communication mode, if the monitoring module 101 detects that the transmission parameter does not satisfy the preset condition (i.e., the current state of the wireless network is unstable), the monitoring module 101 may switch the target communication mode to the wired communication mode. The transmission parameter may include at least one of a packet loss rate, a signal strength, and a signal delay, and the preset condition may include one or more of the following: (1) the packet loss rate is less than or equal to a first threshold, (2) the signal strength is greater than or equal to a second threshold, and (3) the signal delay is less than or equal to a third threshold. For example, when the monitoring module 101 counts that the packet loss rate of communication with the AP module 102 in 30 seconds is greater than 10%, the signal strength is less than-60 dBM, and the signal delay is greater than 100ms, the monitoring module 101 determines that the transmission parameter does not satisfy the preset condition, and may switch the target communication mode to the wired communication mode.
The mode of acquiring the transmission parameter by the monitoring module 101 may be: the monitoring module 101 performs a special data communication with the AP module 102 by using a PING (english: Packet Internet Groper, chinese: Internet Packet searchers) to acquire transmission parameters.
And if the transmission parameters meet the preset conditions and the target communication mode is the wired communication mode, switching the target communication mode into the wireless communication mode.
In another scenario, the data transmission speed is lower in the wired communication mode than in the wireless communication mode under the same conditions. In order to enable efficient data communication between the AP module 102 and the monitoring module 101, when the target communication mode is the wired communication mode and the state of the wireless network is stable, the monitoring module 101 may switch the target communication mode to the wireless communication mode. For example, when the target communication mode is the wired communication mode, if the monitoring module 101 detects that the transmission parameter satisfies the predetermined condition (i.e., the current state of the wireless network is stable), the monitoring module 101 may switch the target communication mode to the wireless communication mode. For example, when the monitoring module 101 counts that the packet loss rate of communication with the AP module 102 in 30 seconds is less than or equal to 10%, the signal strength is greater than or equal to-60 dBM, and the signal delay is greater than or equal to 100ms, the monitoring module 101 determines that the transmission parameter meets the preset condition, and further determines whether the monitoring module 101 is currently performing data acquisition. If the monitoring module 101 is currently performing data acquisition, the data acquisition is continued, and after the data acquisition is completed, the target communication mode is switched to the wireless communication mode. If the monitoring module 101 does not collect data currently, the target communication mode can be directly switched to the wireless communication mode.
It should be noted that, the monitoring module 101 determines whether the current state of the wireless network is stable according to the transmission parameters, so as to automatically switch the target communication mode, and when the wind turbine runs stably and the state of the wireless network is stable, the wireless communication mode is preferentially used, so as to ensure that data communication can be efficiently performed between the monitoring module 101 and the AP module 102. When the interference around the wind turbine generator is large and the state of the wireless network is unstable, a wired communication mode is used to reduce communication interference and improve the stability of data communication.
FIG. 2 is a block diagram illustrating another data monitoring device for a wind turbine according to an exemplary embodiment. As shown in fig. 2, the apparatus 100 further includes a serial server 106 disposed in the electrical cabinet, the monitoring module 101 is connected to the serial server 106 through a serial cable, and the serial server 106 is connected to the AP module 102 through a network cable.
If the target communication mode is the wired communication mode, the AP module 102 is configured to send the data acquisition instruction to the serial server 106 through the network cable, so that the serial server 106 sends the data acquisition instruction to the monitoring module 101 through the serial cable.
And the monitoring module 101 is configured to send the vibration acceleration and the working condition data to the serial server 106 through a serial cable, so that the serial server 106 sends the vibration acceleration and the working condition data to the AP module 102 through the serial cable.
For example, when the target communication mode is a wired communication mode, the cable between the AP module 102 and the monitoring module 101 needs to pass through a slip ring channel of the wind turbine. When monitoring the state of the blades of the wind turbine generator, the monitoring module 101 not only needs to acquire the vibration acceleration of the blades through cables, but also needs to acquire the working condition parameters of the generator controller 105 through the cables, so that the data monitoring device 100 of the wind turbine generator is required to occupy two slip ring channels. However, the slip ring channel of the wind turbine is limited, and it is difficult to provide effective link support for data transmission. In order to save the slip ring channel, the monitoring module 101 may be connected to the serial server 106 through a twisted pair cable (i.e., a serial cable), and communicate with the AP module 102 through the serial server 106 in a one-way communication manner, so that the monitoring module 101 can be ensured to occupy only one (two) slip ring channel while synchronously acquiring vibration acceleration and working condition data. The monitoring module 101 may be provided with an RS 485 communication interface and a CAN (Controller Area Network, chinese) bus interface, and transmits and receives data according to a Modbus protocol or a CAN bus protocol.
When the server issues the data acquisition instruction to the AP module 102, if the target communication mode is the wired communication mode, the AP module 102 may send the data acquisition instruction to the serial server 106 through a network cable by using a preset network protocol (e.g., TCP/IP network protocol), perform protocol conversion by the serial server 106, and send the data acquisition instruction to the monitoring module 101 through a serial cable by using a Modbus protocol or a CAN bus protocol. After receiving the data acquisition instruction, the monitoring module 101 is disconnected from the server (i.e., no longer performs data communication with the server through the AP module 102), acquires the vibration acceleration, and acquires the operating condition data from the AP module 102 through the twisted pair cable in the Modbus protocol or the CAN bus through the serial server 106. After the data collection is completed, the monitoring module 101 establishes a connection with the server again (i.e., performs data communication with the server again through the AP module 102). Then, the monitoring module 101 sends the vibration acceleration and the working condition data to the serial server 106 through the twisted pair cable, the serial server 106 performs protocol conversion, and sends the vibration acceleration and the working condition data to the AP module 102 through the network cable according to a preset network protocol.
FIG. 3 is a block diagram illustrating another data monitoring device for a wind turbine according to an exemplary embodiment. As shown in fig. 3, the monitoring module 101 includes an AP sub-module 1011, and the AP sub-module 1011 is connected to the AP module 102 through a wireless network.
If the target communication mode is the wireless communication mode, the AP module 102 is configured to send the data acquisition instruction to the AP sub-module 1011 through the wireless network.
And the AP sub-module 1011 is configured to send the vibration acceleration and the working condition data to the AP module 102 through a wireless network.
For example, the AP module 102 may include an external AP antenna 1021, the external AP antenna is disposed outside the electrical cabinet 104, and the AP antenna 1021 and the AP module 102 body are connected by a cable, which may be an antenna feeder, for example. When the target communication mode is the wireless communication mode, the AP module 102 may communicate with the AP sub-module 1011 of the monitoring module 101 through the wireless network by using the external AP antenna 1021. When the server issues the data acquisition instruction to the AP module 102, if the target communication mode is the wireless communication mode, the AP module 102 may send the data acquisition instruction to the AP sub-module 1011 through the wireless network. After receiving the data acquisition instruction through the AP sub-module 1011, the monitoring module 101 acquires the vibration acceleration, and acquires the operating condition data from the AP module 102 through the wireless network. Then, the monitoring module 101 sends a wireless signal containing vibration acceleration and working condition data through the AP sub-module 1011, and the wireless signal passes through the hub 103 in the modes of diffraction, reflection and the like of the hub 103, passes through a protective cover of the nacelle 200 of the wind turbine generator, enters the nacelle 200, and is finally received by the external AP antenna 1021.
Further, after the data acquisition is completed, the monitoring module 101 may calculate a characteristic value corresponding to the vibration acceleration according to the acquired vibration acceleration, calculate a characteristic value corresponding to the working condition data according to the acquired working condition data, send the vibration acceleration, the working condition data and the corresponding characteristic value to the AP module 102, and send the vibration acceleration, the working condition data and the characteristic value to the server by the AP module 102. Wherein the characteristic value may include: a peak value, a significant value, a kurtosis value, a peak factor, a pulse factor, a peak factor, a margin factor.
FIG. 4 is a block diagram illustrating yet another wind turbine data monitoring apparatus according to an exemplary embodiment. As shown in fig. 4, the apparatus 100 further includes a lightning protection module 107 disposed in the electrical cabinet 104, the monitoring module 101 passes through a slip ring 108 of the wind turbine generator to be connected to the lightning protection module 107 through a cable, and the lightning protection module 107 is connected to the AP module 102 through a cable.
A lightning protection module 107 for bleeding off current generated on the cable when the blade is struck by lightning.
In one scenario, since the cables need to pass through the slip ring 108 into the nacelle 200 of the wind turbine, when the blades are struck by a lightning, the cables may carry an induction lightning into the nacelle 200, causing damage to components within the electrical cabinet 104 in the nacelle 200. To avoid lightning strikes damaging components within the electrical cabinet 104, a lightning protection module 107 may also be provided in the apparatus 100. Lightning protection module 107 may be installed between slip ring 108 and AP module 102 (when apparatus 100 includes serial server 106, lightning protection module 107 may be installed between slip ring 108 and serial server 106). The lightning protection module 107 may bleed current generated on the cable when the blade is struck by a lightning to protect components within the electrical cabinet 104.
Optionally, the monitoring module 101 is configured to encrypt the vibration acceleration and the operating condition data, and send the encrypted vibration acceleration and operating condition data to the AP module 102 through a wireless network.
The AP module 102 is further configured to decrypt the encrypted vibration acceleration and working condition data to obtain the vibration acceleration and working condition data, and send the vibration acceleration and working condition data to the server.
In another scenario, when the monitoring module 101 and the AP module 102 perform data communication through a wireless network (i.e., when the target communication mode is a wireless communication mode), the monitoring module is susceptible to being hijacked and invaded by a third-party device, which may result in data leakage or device damage. In order to ensure that the wireless network is not invaded by a third party, the AP module may encrypt the wireless network between the monitoring module 101 and the AP module 102 by using WPA-PSK (WPA-shared Key, chinese: WPA pre-shared Key) and WPA2-PSK Encryption technologies, and use an AES (Advanced Encryption Standard, chinese: Advanced Encryption Standard) Encryption algorithm. Meanwhile, the filtering mode of the MAC (Media Access Control Address, Chinese) Address of the AP module is started, and only the MAC Address in the configuration list is allowed to correspond to the wireless equipment to Access the wireless local area network generated by the AP module, so that the limitation of the Access equipment is ensured.
Further, the monitoring module 101 and the AP module 102 use an IPSec (Internet Protocol Security, chinese: Internet Security Protocol) VPN tunnel mode to perform encryption at the same time, so as to prevent data leakage caused by a third party intruding into a wireless network. For example, the monitoring module 101 may encrypt the vibration acceleration and the operating condition data, and send the encrypted vibration acceleration and operating condition data to the AP module 102 through the wireless network. And then the AP module 102 decrypts the encrypted vibration acceleration and working condition data to obtain the vibration acceleration and working condition data, and sends the vibration acceleration and working condition data to the server.
To sum up, the data monitoring device of wind turbine generator in this disclosure includes: monitoring module and wireless access point AP module, monitoring module sets up on wind turbine generator's wheel hub, the AP module sets up in wind turbine generator's regulator cubicle, monitoring module passes through the cable and is connected with the AP module, the AP module passes through the cable and is connected with the unit controller of setting in the regulator cubicle, monitoring module passes through wireless network and is connected with the AP module, a data acquisition instruction for receiving server sends, and send the data acquisition instruction to monitoring module according to the target communication mode, wherein, the target communication mode is: the monitoring module is used for receiving a data acquisition instruction according to a target communication mode and monitoring the vibration acceleration and the working condition data of the blades of the wind turbine generator according to the data acquisition instruction, the working condition data are acquired by the AP module from the unit controller and are sent to the monitoring module according to the target communication mode, and the monitoring module is also used for sending the vibration acceleration and the working condition data to the AP module according to the target communication mode and sending the received vibration acceleration and the working condition data to the server. This is disclosed through vibration acceleration and the operating mode data that monitoring module will gather, send to the AP module according to wireless communication mode or wired communication mode to send to the server by the AP module, can reduce the interference among the data communication process, under the prerequisite of the promptness of guaranteeing the monitoring, improve the stability and the reliability of monitoring.
FIG. 5 is a flow chart illustrating a method of data monitoring of a wind turbine generator according to an exemplary embodiment. As shown in fig. 5, the data monitoring device applied to the wind turbine generator includes: the monitoring system comprises a monitoring module and an AP module, wherein the monitoring module is arranged on a hub of the wind turbine generator, the AP module is arranged in an electrical cabinet of the wind turbine generator, the monitoring module is connected with the AP module through a cable, the AP module is connected with a unit controller arranged in the electrical cabinet through a cable, and the monitoring module is connected with the AP module through a wireless network, and the monitoring method comprises the following steps:
And step 203, sending the vibration acceleration and the working condition data to the AP module through the monitoring module according to the target communication mode.
And step 204, sending the received vibration acceleration and working condition data to a server through the AP module.
FIG. 6 is a flow chart illustrating another method of data monitoring of a wind turbine according to an exemplary embodiment. As shown in fig. 6, the method further comprises the steps of:
In step 206, if the transmission parameter does not satisfy the preset condition and the target communication mode is the wireless communication mode, the target communication mode is switched to the wired communication mode through the monitoring module.
Optionally, the device further comprises a serial server arranged in the electrical cabinet; the monitoring module is connected with the serial server through a serial cable, the serial server is connected with the AP module through a network cable, and the step 201 can be realized through the following modes:
if the target communication mode is the wired communication mode, the data acquisition instruction is sent to the serial server through the AP module through the network cable, so that the serial server sends the data acquisition instruction to the monitoring module through the serial cable.
Step 203 may be implemented by:
the vibration acceleration and the working condition data are sent to the serial port server through the monitoring module through a serial port cable, so that the serial port server sends the vibration acceleration and the working condition data to the AP module through a network cable.
Optionally, the monitoring module includes an AP sub-module, and the AP sub-module is connected to the AP module through a wireless network, and step 201 may be implemented in the following manner:
and if the target communication mode is the wireless communication mode, the data acquisition instruction is sent to the AP sub-module through the AP module through a wireless network.
Step 203 may be implemented by:
and the vibration acceleration and working condition data are sent to the AP module through the AP submodule through a wireless network.
Optionally, the transmission parameter includes at least one of a packet loss rate, a signal strength, and a signal delay, and the preset condition includes one or more of the following:
the packet loss rate is less than or equal to a first threshold.
The signal strength is greater than or equal to a second threshold.
The signal delay is less than or equal to a third threshold.
FIG. 7 is a flow chart illustrating another method of data monitoring of a wind turbine according to an exemplary embodiment. As shown in fig. 7, the device further includes a lightning protection module disposed in the electrical cabinet, the monitoring module passes through a slip ring of the wind turbine generator to be connected with the lightning protection module through a cable, and the lightning protection module is connected with the AP module through a cable, and the method further includes the following steps:
and 208, discharging current generated on the cable when the blade is struck by lightning through the lightning protection module.
Optionally, the AP module includes an external AP antenna, and the external AP antenna is disposed outside the electrical cabinet.
FIG. 8 is a flow chart illustrating yet another method of data monitoring of a wind turbine generator according to an exemplary embodiment. As shown in fig. 8, the method further comprises the steps of:
and step 209, encrypting the vibration acceleration and the working condition data through the monitoring module, and sending the encrypted vibration acceleration and working condition data to the AP module through a wireless network.
And step 210, decrypting the encrypted vibration acceleration and working condition data through the AP module to obtain the vibration acceleration and working condition data, and sending the vibration acceleration and working condition data to a server.
With regard to the method in the above-described embodiment, the specific manner in which the respective steps perform operations has been described in detail in the embodiment related to the apparatus, and will not be elaborated upon here.
To sum up, the data monitoring device of wind turbine generator in this disclosure includes: monitoring module and wireless access point AP module, monitoring module sets up on wind turbine generator's wheel hub, the AP module sets up in wind turbine generator's regulator cubicle, monitoring module passes through the cable and is connected with the AP module, the AP module passes through the cable and is connected with the unit controller of setting in the regulator cubicle, monitoring module passes through wireless network and is connected with the AP module, a data acquisition instruction for receiving server sends, and send the data acquisition instruction to monitoring module according to the target communication mode, wherein, the target communication mode is: the monitoring module is used for receiving a data acquisition instruction according to a target communication mode and monitoring the vibration acceleration and the working condition data of the blades of the wind turbine generator according to the data acquisition instruction, the working condition data are acquired by the AP module from the unit controller and are sent to the monitoring module according to the target communication mode, and the monitoring module is also used for sending the vibration acceleration and the working condition data to the AP module according to the target communication mode and sending the received vibration acceleration and the working condition data to the server. This is disclosed through vibration acceleration and the operating mode data that monitoring module will gather, send to the AP module according to wireless communication mode or wired communication mode to send to the server by the AP module, can reduce the interference among the data communication process, under the prerequisite of the promptness of guaranteeing the monitoring, improve the stability and the reliability of monitoring.
The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (10)
1. A data monitoring device of a wind turbine generator, characterized in that the device comprises: the monitoring system comprises a monitoring module and a wireless Access Point (AP) module, wherein the monitoring module is arranged on a hub of the wind turbine generator, the AP module is arranged in an electrical cabinet of the wind turbine generator, the monitoring module is connected with the AP module through a cable, the AP module is connected with a unit controller arranged in the electrical cabinet through a cable, and the monitoring module is connected with the AP module through a wireless network;
the AP module is used for receiving a data acquisition instruction sent by a server and sending the data acquisition instruction to the monitoring module according to a target communication mode, wherein the target communication mode is as follows: a wireless communication mode, or a wired communication mode;
the monitoring module is used for receiving the data acquisition instruction according to the target communication mode, monitoring the vibration acceleration and working condition data of the blades of the wind turbine generator according to the data acquisition instruction, wherein the working condition data are acquired by the AP module from the unit controller and are sent to the monitoring module according to the target communication mode;
the monitoring module is further configured to send the vibration acceleration and the working condition data to the AP module according to the target communication mode;
and the AP module is also used for sending the received vibration acceleration and the working condition data to the server.
2. The apparatus of claim 1, wherein the monitoring module is further configured to:
determining whether transmission parameters in the target communication mode meet preset conditions;
if the transmission parameter does not meet the preset condition and the target communication mode is a wireless communication mode, switching the target communication mode into a wired communication mode;
and if the transmission parameters meet the preset conditions and the target communication mode is a wired communication mode, switching the target communication mode into a wireless communication mode.
3. The apparatus of claim 1, further comprising a serial server disposed in the electrical cabinet; the monitoring module is connected with the serial server through a serial cable, and the serial server is connected with the AP module through a network cable;
if the target communication mode is a wired communication mode, the AP module is used for sending the data acquisition instruction to the serial server through a network cable so that the serial server sends the data acquisition instruction to the monitoring module through a serial cable;
the monitoring module is used for sending the vibration acceleration and the working condition data to the serial server through a serial port cable, so that the serial server sends the vibration acceleration and the working condition data to the AP module through a network cable.
4. The apparatus of claim 1, wherein the monitoring module comprises an AP sub-module, the AP sub-module being connected to the AP module via a wireless network;
if the target communication mode is a wireless communication mode, the AP module is used for sending the data acquisition instruction to the AP submodule through a wireless network;
and the AP submodule is used for sending the vibration acceleration and the working condition data to the AP module through a wireless network.
5. The apparatus according to claim 2, wherein the transmission parameter includes at least one of packet loss rate, signal strength, and signal delay, and the preset condition includes one or more of the following:
the packet loss rate is less than or equal to a first threshold;
the signal strength is greater than or equal to a second threshold;
the signal delay is less than or equal to a third threshold.
6. The apparatus of any one of claims 1-5, further comprising a lightning protection module disposed in the electrical cabinet, the monitoring module connected to the lightning protection module through a slip ring of the wind turbine generator by a cable, the lightning protection module connected to the AP module by a cable;
the lightning protection module is used for discharging current generated on the cable when the blade is struck by lightning.
7. The apparatus of any one of claims 1-5, wherein the AP module comprises an external AP antenna disposed outside of the electrical cabinet.
8. The device according to any one of claims 1 to 5, wherein the monitoring module is configured to encrypt the vibration acceleration and the operating condition data, and send the encrypted vibration acceleration and the encrypted operating condition data to the AP module through the wireless network;
and the AP module is also used for decrypting the encrypted vibration acceleration and the working condition data so as to obtain the vibration acceleration and the working condition data and sending the vibration acceleration and the working condition data to the server.
9. A data monitoring method of a wind turbine generator is characterized by being applied to a data monitoring device of the wind turbine generator, and the device comprises the following steps: the monitoring system comprises a monitoring module and an AP module, wherein the monitoring module is arranged on a hub of the wind turbine generator, the AP module is arranged in an electrical cabinet of the wind turbine generator, the monitoring module is connected with the AP module through a cable, the AP module is connected with a unit controller arranged in the electrical cabinet through a cable, the monitoring module is connected with the AP module through a wireless network, and the method comprises the following steps:
receiving a data acquisition instruction sent by a server through the AP module, and sending the data acquisition instruction to the monitoring module according to a target communication mode, wherein the target communication mode is as follows: a wireless communication mode, or a wired communication mode;
receiving the data acquisition instruction through the monitoring module according to the target communication mode, and monitoring the vibration acceleration and working condition data of the blades of the wind turbine generator according to the data acquisition instruction, wherein the working condition data are acquired by the AP module from the unit controller and are sent to the monitoring module according to the target communication mode;
sending the vibration acceleration and the working condition data to the AP module through the monitoring module according to the target communication mode;
and sending the received vibration acceleration and the working condition data to the server through the AP module.
10. The method of claim 9, further comprising:
determining, by the monitoring module, whether transmission parameters in the target communication mode satisfy a preset condition;
if the transmission parameter does not meet the preset condition and the target communication mode is a wireless communication mode, switching the target communication mode into a wired communication mode through the monitoring module;
and if the transmission parameters meet the preset conditions and the target communication mode is a wired communication mode, switching the target communication mode into a wireless communication mode through the monitoring module.
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| CN116112529A (en) * | 2023-04-03 | 2023-05-12 | 三一汽车起重机械有限公司 | Multi-mode signal transmission method and device and engineering machinery |
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