CN210665935U - Lightning current online monitoring system of wind generating set - Google Patents
Lightning current online monitoring system of wind generating set Download PDFInfo
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- CN210665935U CN210665935U CN201921407149.6U CN201921407149U CN210665935U CN 210665935 U CN210665935 U CN 210665935U CN 201921407149 U CN201921407149 U CN 201921407149U CN 210665935 U CN210665935 U CN 210665935U
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Abstract
The utility model discloses a lightning current on-line monitoring system of a wind generating set, which comprises a lightning current sensor component, a lightning current measuring and processing device and a slip ring; the utility model provides a lightning current measurement processing apparatus installs in wind generating set's impeller and is connected with each lightning current sensor, be used for each to real-time reception the current signal that lightning current sensor gathered handles in order to obtain lightning current relevant data, and the relevant data of the lightning current that the storage obtained, and the integrated design of lightning current measurement processing apparatus is on the impeller, be located the outside main control unit of impeller through sliding ring wired connection, main control unit communicates through wired signal communication line and lightning current measurement processing apparatus like this, data transmission or other actions are accomplished to the two, need not to set up too much other redundant communication device like this, the on-line monitoring system has been simplified greatly, correspondingly, the construction cost has been reduced, and wired transmission reliability is than higher, and the interference killing feature is strong.
Description
Technical Field
The utility model discloses wind generating set safe operation monitors technical field, in particular to wind generating set lightning current on-line monitoring system.
Background
The wind generating set is mostly installed in environments with frequent lightning strikes such as plateaus, mountains and seasides, and due to the characteristics of the wind generating set, the probability of suffering from the lightning strike is higher. If the wind generating set is not repaired in time after being struck by lightning, the normal operation of the wind generating set can be influenced.
At present, in order to know the condition of the wind generating set struck by lightning as much as possible, a monitoring device is usually arranged to detect the condition of the wind generating set struck by lightning. The working principle of the monitoring device is as follows: when the blade is struck by lightning, lightning current flows through the down conductor, a measuring coil fixed on the down conductor induces corresponding lightning current components, and the lightning current monitoring device is triggered at the same time. The output signal of the measuring coil is sent to a central processing module with the functions of starting, judging, recording and the like through a signal conditioning and AD conversion module.
The prior art mainly obtains data stored by a central processing module through the following two ways:
the first mode is a thunder and lightning recording card, which can only record the maximum value of a plurality of lightning strokes and cannot store information such as lightning current peak value, waveform data, time and the like each time; lightning current history data cannot be queried.
The second method is a wireless transmission method, because the wind turbine generator set blades are installed in the impeller, which is a rotating part, the lightning current data in the central processing module usually needs to be transmitted to the controller in the nacelle through a wireless communication method.
However, the wireless communication mode requires a large number of communication modules, which is costly, and has poor transmission reliability and interference resistance.
Therefore, how to provide an online lightning current monitoring system for a wind turbine generator system with reliable transmission and low cost is a technical problem to be solved urgently by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a wind generating set lightning current on-line monitoring system, this monitoring system wired transmission's interference killing feature is strong, transmission reliability is than higher, and the cost ratio is lower.
The utility model provides an on-line lightning current monitoring system of a wind generating set,
the lightning current sensor comprises a lightning current sensor component, a lightning current measurement processing device and a slip ring; the lightning current sensor assembly is arranged on a blade down conductor at the root of the blade, is electrically connected with the blade down conductor and is at least used for detecting the lightning current of the blade down conductor of the wind generating set;
the lightning current measurement processing device is arranged in a hub of an impeller of the wind generating set, connected with the lightning current sensor assembly and used for processing a current signal acquired by the lightning current sensor assembly received in real time to obtain lightning current related data and storing the obtained lightning current related data;
and the signal communication line between the lightning current measurement processing device and the main controller outside the impeller is communicated through the slip ring, so that the main controller can at least obtain the lightning current related data.
The utility model provides a lightning current measurement processing apparatus integrated design is on the impeller, be located the outside main control unit of impeller through sliding ring wired connection, main control unit communicates through wired signal communication line and lightning current measurement processing apparatus like this, the two accomplishes data transmission or other actions, need not to set up too much other redundant communication device like this, the on-line monitoring system has been simplified greatly, the corresponding construction cost that has reduced, and wired transmission's transmission reliability is than higher, and the interference killing feature is strong.
Optionally, the wind generating set further comprises a measurement and control cabinet arranged on an impeller of the wind generating set, and the measurement and control cabinet is used for monitoring operating condition parameters of the impeller; the measurement and control cabinet is further provided with a port for installing a communication line for communicating with the lightning current measurement processing device, so that the measurement and control cabinet can read and store lightning current related data in the lightning current measurement processing device;
the slip ring is communicated with a signal communication line between the measurement and control cabinet and the main controller, so that the main controller can obtain the relevant data of the lightning current and the operating condition parameters of the impeller from the measurement and control cabinet.
Optionally, the wind generating set further comprises a measurement and control cabinet arranged on an impeller of the wind generating set, and the measurement and control cabinet is used for monitoring operating condition parameters of the impeller; and the signal communication line between the main controller and the measurement and control cabinet is also communicated through the slip ring, so that the main controller can conveniently acquire the operating condition parameters of the impeller.
Optionally, the wind turbine further comprises pitch changing cabinets which are arranged in the hub and correspond to the three blades one by one, and each pitch changing cabinet is used for controlling the pitch changing work of the corresponding blade; and the signal communication lines between the main controller and each variable pitch cabinet are also communicated through the slip ring.
Optionally, the system further comprises a first network device disposed on the impeller; and the measurement and control cabinet, the lightning current measurement and processing device and the signal communication line communicated with each pitch control cabinet are connected with the communication line on the slip ring through the first network equipment.
Optionally, the main controller is a main control unit installed in a nacelle or a tower of the wind turbine generator system, and is used for overall control of the wind turbine generator system.
Optionally, the main controller is a controller of a wind farm centralized monitoring system SCADA.
Optionally, the wind power plant monitoring system further comprises a second network device, and the main control unit of the wind power generation unit and the slip ring are in wired communication connection with a controller of the wind power plant centralized monitoring system SCADA through the second network device.
Optionally, the first network device includes a switch or a router;
alternatively, the second network device comprises a switch or a router.
Optionally, the communication network between the main controller and the slip ring, between the slip ring and the measurement and control cabinet, or between the measurement and control cabinet and the lightning current measurement and processing device is a controller area network Bus CAN Bus, a serial data interface RS-485, an EIA-422, or an ethernet physical layer.
Drawings
Fig. 1 is a block diagram of a lightning current online monitoring system of a wind turbine generator system according to a first embodiment of the present invention;
fig. 2 is a block diagram of a lightning current on-line monitoring system of a wind turbine generator system according to a second embodiment of the present invention;
fig. 3 is a block diagram of a lightning current on-line monitoring system of a wind turbine generator system according to a third embodiment of the present invention.
In fig. 1 to 3, the one-to-one correspondence between each reference numeral and the component name is as follows:
100-tower or nacelle; 101-an impeller; 102-a blade; 10-lightning current measurement processing means; 11-a first lightning current sensor; 12-a second lightning current sensor; 13-a third lightning current sensor; 20-a measurement and control cabinet; 30-a main controller; 301-a main control unit; 40-a slip ring; 41-signal communication line; 42-signal communication lines; 51-a first network device; 52-a second network device; 61-a first pitch control cabinet, 62-a second pitch control cabinet and 63-a third pitch control cabinet.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, fig. 1 is a block diagram of a lightning current online monitoring system of a wind turbine generator system according to a first embodiment of the present invention.
The utility model provides a wind generating set includes tower section of thick bamboo or cabin 100 and impeller 101, and the tower section of thick bamboo mainly plays the supporting role, and the bottom sprag is in ground. The nacelle is fixedly arranged on the top of the tower, and the impeller can rotate relative to the nacelle. The impeller 101 includes at least a blade 102 and a hub, and the specific structure can refer to the existing materials, which are not described herein too much.
The utility model provides a wind generating set lightning current on-line monitoring system, including lightning current sensor subassembly, lightning current measurement processing apparatus 10 and sliding ring 40. The lightning current sensor assembly is at least used for detecting lightning current of a down conductor of a blade 102 of the wind generating set, lightning current sensors in the lightning current sensor assembly correspond to the blades 102 one by one, and the lightning current sensors are usually Rogowski coil type current sensors. Taking three blades 102 as an example, the lightning current sensor assembly includes a first lightning current sensor 11, a second lightning current sensor 12, and a third lightning current sensor 13, which are respectively installed on the blade down conductors at the root of the three blades 102, connected to the blade down conductor points, and at least used for detecting the lightning current of the corresponding blade 102. Each lightning current sensor may be wirelessly connected to the lightning current measurement and processing device 10, or may be connected to the lightning current measurement and processing device by wire, the latter being preferred herein.
The utility model provides a lightning current measurement processing apparatus 10 installs in wind generating set's impeller 101 and is connected with well lightning current sensor in the lightning current sensor subassembly, and it can receive the lightning current signal that each lightning current sensor gathered in real time to handle the lightning current signal received in order to obtain the relevant data of lightning current, and the relevant data of the lightning current that the storage obtained.
That is, the lightning current measurement processing device 10 has at least functions of receiving signals, analyzing, calculating, and storing lightning current-related data. The lightning current related data may include time of occurrence of lightning strike, lightning current amplitude, waveform data, polarity, and number of lightning strikes. Of course, the lightning current measurement processing device 10 may also have functions of self-checking, uploading faults, updating the system online, remotely configuring parameters, logging files, and locally inputting and outputting states to other devices.
The processing of the lightning current related data can be realized by existing software, and the specific acquisition mode for realizing the lightning current related data is not disclosed herein, so that the understanding and implementation of the technical scheme herein by the person skilled in the art are not affected.
The utility model provides a lightning current measures processing apparatus 10 and is located the main control unit 30 between the two signal communication line of wind generating set outside impeller 101 and passes through sliding ring 40 intercommunication, that is to say, the utility model discloses well lightning current measures processing apparatus 10 and is located impeller 101, and main control unit 30 is located the tower section of thick bamboo or cabin 100 wait positions outside impeller 101, and lightning current measures processing apparatus 10 can rotate along with impeller 101, and main control unit 30 is fixed, and the signal communication line between the two (signal communication line 41 and signal communication line 42 in fig. 1 form total signal communication line) realizes the intercommunication through sliding ring 40.
It should be noted that the slip ring 40 (slip ring, a wind power slip ring) is an electrical component for communicating signals with a rotating body, and mainly includes a stationary part and a rotating part. The slip ring 40 is used for transmission of power, control and communication signals between the rotating and stationary members. The rotating part is connected with a rotating part of the equipment. The stationary part is connected to a stationary part of the device. Taking this document as an example, the rotating part of the slip ring 40 is connected to the communication line of the lightning current measurement processing device 10, the fixed part is connected to the communication line of the main controller 30, and the communication line of the main controller 30 and the communication line of the lightning current measurement processing device 10 are communicated through the slip ring 10, so as to realize the communication function of the main controller 30 and the lightning current measurement processing device 10.
The main controller 30 can send a command to the lightning current measurement processing device 10 through the signal communication line, and the lightning current measurement processing device 10 can perform related actions, such as updating parameter configuration and the like, according to the received command or signal, and can also send related information, such as lightning current related data, back to the main controller 30 according to the received command or signal. The communication between the main controller 30 and the lightning current measurement processing device 10 may be real-time, but may also be time-spaced, for example periodically.
The main controller 30 may be a main control unit of the wind turbine, and is generally installed inside an electrical cabinet of a nacelle or a tower of the wind turbine, and is responsible for performing overall control functions and different functions of the wind turbine.
The main controller 30 may also be a controller of a wind farm centralized monitoring system SCADA (which is connected to each wind turbine in the wind farm, specifically, connected to each wind turbine through an optical fiber ring network inside the wind farm). In this embodiment, for accessing lightning stream data, the main controller 30 may be a main control unit of the wind turbine generator system, according to a variety of different network configurations, for locally reading the lightning stream data; or the controller of the SCADA serves as a main controller and remotely reads the lightning current data through the Ethernet. In addition, other external controllers may be used to read lightning current related data.
As can be seen from the above description, the lightning current measurement processing device 10 is integrally designed on the impeller 101, and is connected to the main controller 30 located outside the impeller 101 through the slip ring 40 by wire, so that the main controller 30 communicates with the lightning current measurement processing device 10 through a wire signal communication line, and the two complete data transmission or other actions, so that there is no need to provide other redundant communication devices, the online monitoring system is greatly simplified, the construction cost is correspondingly reduced, the reliability of the wire transmission is higher, and the anti-interference capability is strong.
Referring to fig. 2, fig. 2 is a block diagram of a lightning current on-line monitoring system of a wind turbine generator system according to a second embodiment of the present invention.
In a specific embodiment, the online monitoring system may further include a measurement and control cabinet 20 disposed on an impeller 101 of the wind turbine generator system, where the measurement and control cabinet 20 is mainly configured to monitor an operation condition parameter of the impeller 101, and the operation condition parameter of the impeller 101 described herein may include one or more of temperature, humidity, vibration, or load. The temperature, humidity, vibration, or load is detected by a temperature sensor, a humidity sensor, a vibration sensor, or a load sensor, respectively, which is installed at a corresponding position of the impeller 101.
The measurement and control cabinet 20 is further provided with a port for installing a communication line for communicating with the lightning current measurement and processing device 10, so that the measurement and control cabinet 20 can read and store the data related to the lightning current in the lightning current measurement and processing device 10.
That is, the measurement and control cabinet 20 is specially provided with a port for installing a communication line for communicating with the lightning current measurement processing device 10.
The utility model provides a survey and control cabinet 20 is connected with lightning current measurement processing apparatus 10 through the wire communication line in addition to the parameter of the above-mentioned sensor that reflects impeller 101 operating condition parameter of receipt, processing and storage, and survey and control cabinet 20 to realize the communication between the two, can be from the relevant data of lightning current and this data of storage in the lightning current measurement processing apparatus 10 at least.
In this embodiment, the slip ring 40 is connected to the signal communication line between the measurement and control cabinet 20 and the main controller 30, so that the main controller 30 can obtain the lightning current related data and the operating condition parameters of the impeller 101 from the measurement and control cabinet 20.
In the above embodiment, the lightning current measurement processing device 10 is not directly connected to the main controller 30 by a wire, the lightning current measurement processing device is connected to the measurement and control cabinet 20 by a communication wire, the measurement and control cabinet 20 is communicated with the main controller 30 by the slip ring 40, the lightning current measurement processing device 10 is directly communicated with the measurement and control cabinet 20, and the main controller 30 is indirectly communicated with the lightning current measurement processing device by the measurement and control cabinet 20. The network configuration of this architecture is relatively simple.
Referring to fig. 3, fig. 3 is a block diagram of a lightning current on-line monitoring system of a wind turbine generator system according to a third embodiment of the present invention.
In another specific embodiment, the system for monitoring lightning current of a wind turbine generator system on line also comprises a measurement and control cabinet 20, the function and function of the measurement and control cabinet 20 in this embodiment are the same as those in the above embodiment, except that the lightning current measurement and processing device is directly communicated with the main controller 30 through the slip ring 40. The signal communication lines between the main controller 30 and the measurement and control cabinet 20 are also communicated through the slip ring 40.
Usually, the impeller 101 is further provided with a pitch control cabinet, and the pitch control cabinet corresponds to the blades 102 one by one and is used for controlling the pitch control work of the corresponding blades 102. The figure shows a first pitch cabinet 61, a second pitch cabinet 62 and a third pitch cabinet 63 which respectively control the pitch work of three blades 102. The signal communication lines between the main controller 30 and each pitch cabinet are also communicated through a slip ring 40.
The embodiment further integrates a communication network of the variable pitch cabinet arranged on the impeller 101 into the lightning current on-line monitoring system, and further simplifies the whole network structure of the wind generating set.
Further, the lightning current online monitoring system may further include a first network device 51 disposed on the impeller 101; the signal communication lines communicated with the measurement and control cabinet 20, the lightning current measurement and processing device 10 and each pitch control cabinet are all connected with the communication lines on the slip ring 40 through first network equipment 51. The first network device 51 may be a switch or a router.
The first network device 51 can interconnect devices in the network, and the first network device 51 is connected to the slip ring 40 through a bus.
When the main controller 30 is a wind farm looped network, a second network device 52 may be further disposed in the nacelle or the tower, and the main control unit of the wind turbine generator system and the slip ring 40 are in wired communication with the wind farm looped network through the second network device 52. The second network device 52 comprises a switch or router.
The communication network between the main controller 30 and the slip ring 40, the communication network between the slip ring 40 and the measurement and control cabinet 20, or the communication network between the measurement and control cabinet 20 and the lightning current measurement and processing device 10 may be different data protocols such as Ethercat (chinese is Ethernet control automation technology), Ethernet (chinese name is Ethernet), Profibus, Powerlink, etc., and the physical layer may be different interfaces such as controller area network Bus CAN Bus, serial data interface RS-485, EIA-422, Ethernet physical layer (10BASE-T, 10BASE2, 10BASE5, 100BASE-TX, 100 BASE-fx.100base-T, 1000BASE-SX, etc.).
It is right above the utility model provides a wind generating set lightning current on-line monitoring system has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (11)
1. The lightning current on-line monitoring system of the wind generating set is characterized by comprising a lightning current sensor assembly, a lightning current measuring and processing device (10) and a slip ring (40); the lightning current sensor assembly comprises a first lightning current sensor (11), a second lightning current sensor (12) and a third lightning current sensor (13), is mounted on a blade down conductor at the root of a blade, is electrically connected with the blade down conductor and is at least used for detecting the lightning current of the blade down conductor of the wind generating set;
the lightning current measurement processing device (10) is arranged in a hub of an impeller (101) of the wind generating set, connected with the lightning current sensor assembly and used for processing a current signal collected by the lightning current sensor assembly received in real time to obtain lightning current related data and storing the obtained lightning current related data;
the signal communication line between the lightning current measurement processing device (10) and a main controller (30) which is positioned outside the impeller (101) is communicated through the slip ring (40), so that the main controller (30) can at least acquire the lightning current related data.
2. The wind generating set lightning current on-line monitoring system of claim 1, characterized by further comprising a measurement and control cabinet (20) arranged in a hub of an impeller (101) of the wind generating set for monitoring operating condition parameters of the impeller (101); the measurement and control cabinet (20) is further provided with a port for installing a communication line for communicating with the lightning current measurement processing device (10), so that the measurement and control cabinet (20) can read and store lightning current related data in the lightning current measurement processing device (10);
the slip ring (40) is communicated with a signal communication line between the measurement and control cabinet (20) and the main controller, so that the main controller can obtain the lightning current related data and the operating condition parameters of the impeller (101) from the measurement and control cabinet (20).
3. The wind generating set lightning current on-line monitoring system of claim 1, characterized by further comprising a measurement and control cabinet (20) arranged in a hub of an impeller (101) of the wind generating set for monitoring operating condition parameters of the impeller (101); and the signal communication line between the main controller (30) and the measurement and control cabinet (20) is also communicated through the slip ring (40), so that the main controller (30) can acquire the operating condition parameters of the impeller (101).
4. The system for monitoring the lightning current of the wind generating set according to claim 3, further comprising a pitch control cabinet (61, 62, 63) which is arranged in the hub and corresponds to the three blades one by one, wherein each pitch control cabinet (61, 62, 63) is used for controlling the pitch control operation of the corresponding blade; the signal communication lines between the main controller (30) and the variable pitch cabinets (61, 62, 63) are also communicated through the slip ring (40).
5. The wind turbine generator system lightning current on-line monitoring system according to claim 4, further comprising a first network device (51) arranged at the impeller (101); the signal communication lines of the measurement and control cabinet (20), the lightning current measurement and processing device (10) and the pitch control cabinets (61, 62 and 63) are connected with the communication line on the slip ring (40) through the first network equipment (51).
6. The wind generating set lightning current on-line monitoring system according to claim 1, characterized in that the main controller (30) is a main control unit (301) installed in a nacelle or a tower of the wind generating set and used for overall control of the wind generating set.
7. Wind turbine generator system lightning current on-line monitoring system according to claim 1, characterised in that said master controller (30) is a controller of a wind farm centralized monitoring system SCADA.
8. Wind turbine generator system lightning current on-line monitoring system according to claim 7, characterised in that it further comprises a second network device (52), the main control unit (301) and the slip ring (40) of the wind turbine generator system being connected in wired communication with the controller of the wind farm centralized monitoring system SCADA via the second network device (52).
9. Wind turbine generator system lightning current on-line monitoring system according to claim 8, characterised in that the second network device (52) comprises a switch or a router.
10. Wind turbine generator system lightning current on-line monitoring system according to claim 5, characterised in that the first network device (51) comprises a switch or a router.
11. The wind turbine generator system lightning current on-line monitoring system according to any one of claims 2 to 5, wherein the communication network between the main controller (30) and the slip ring (40), between the slip ring (40) and the measurement and control cabinet (20), or between the measurement and control cabinet (20) and the lightning current measurement processing device (10) is a controller area network Bus CAN Bus, a serial data interface RS-485, an EIA-422, an Ethernet physical layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921407149.6U CN210665935U (en) | 2019-08-27 | 2019-08-27 | Lightning current online monitoring system of wind generating set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921407149.6U CN210665935U (en) | 2019-08-27 | 2019-08-27 | Lightning current online monitoring system of wind generating set |
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| CN210665935U true CN210665935U (en) | 2020-06-02 |
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| CN201921407149.6U Active CN210665935U (en) | 2019-08-27 | 2019-08-27 | Lightning current online monitoring system of wind generating set |
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