CN112483453A - Small-sized wind power plant monitoring system based on upper computer and lower computer - Google Patents
Small-sized wind power plant monitoring system based on upper computer and lower computer Download PDFInfo
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- CN112483453A CN112483453A CN202011375361.6A CN202011375361A CN112483453A CN 112483453 A CN112483453 A CN 112483453A CN 202011375361 A CN202011375361 A CN 202011375361A CN 112483453 A CN112483453 A CN 112483453A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims description 9
- 230000007613 environmental effect Effects 0.000 claims description 6
- 238000013507 mapping Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/007—Conjoint control of two or more different functions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/188—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for motors; for generators; for power supplies; for power distribution
Abstract
The invention relates to the technical field of wind power generation, in particular to a small-sized wind power generation field monitoring system based on an upper computer and a lower computer, which comprises a fan for outputting wind power, a sensor, the lower computer, the upper computer and a background terminal, wherein: the sensor is used for acquiring the operating parameters of the fan; the lower computer is used for receiving the operation parameters acquired by the sensor; the upper computer is used for receiving and processing the operation parameters, inputting the operation parameters into a preset model and obtaining a fan output curve; the upper computer is also used for inputting control instructions; the lower computer is also used for receiving a control instruction sent by the upper computer and driving the fan to operate according to the control instruction; the background terminal is used for receiving and displaying the operation parameters; the problem unfavorable to fan control among the correlation technique can be solved to this scheme of adoption.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a small wind power generation field monitoring system based on an upper computer and a lower computer.
Background
With the continuous increase of wind power demand, wind power generation is increasingly applied to life production as a sustainable and environment-friendly energy solution; however, wind power generation equipment is relatively large, requires a large installation space, and requires natural wind power for use. Because wind power generation equipment is too big, can not install in the universities of professorship and come for student's practice teaching, and need natural wind-force, so the test condition receives the restriction, is unfavorable for the laboratory to develop the real standard of teaching.
In contrast, a document with chinese patent publication No. CN107871429A discloses a wind power generation teaching experiment training device for classroom practice teaching, which includes a fan, a protection frame and a power generation fan blade; a protective frame is arranged on the device body; the four corners of the bottom side of the protection frame are symmetrically provided with moving wheels; a control display panel is arranged at the corner of one side of the protection frame; a fan blade containing box is arranged at one end of the bottom side in the protective frame; the ratchet wheel is fixedly provided with a power generation fan blade; a front and rear travelling track is arranged on one side of the fan blade containing box; a left traveling rail and a right traveling rail are arranged on the upper side of the front traveling rail and the rear traveling rail; the left and right advancing tracks are composed of a front and back advancing motor, a front and back advancing wheel and a front and back advancing base; the upper side of the left and right travelling tracks is provided with a fan supporting frame.
However, in a teaching experiment, a person operating the power generation equipment is usually a student, and various faults of the power generation equipment are easily caused by misoperation due to weak operation experience of a beginner and an operation mode which is not standard enough; if the person on duty is not on site, the condition of the wind driven generator cannot be monitored, the running condition of the wind driven generator when the wind driven generator breaks down cannot be known in time, and the problem of unfavorable monitoring exists.
Disclosure of Invention
The invention aims to provide a small wind power plant monitoring system based on an upper computer and a lower computer, which can solve the technical problem of unfavorable monitoring.
The basic scheme provided by the invention is as follows: small-size aerogenerator field monitored control system based on host computer and next machine still includes sensor, next machine, host computer and backstage terminal including the fan that is used for exporting wind-force, wherein:
the sensor is used for acquiring the operating parameters of the fan;
the lower computer is used for receiving the operation parameters acquired by the sensor;
the upper computer is used for receiving and processing the operation parameters, inputting the operation parameters into a preset model and obtaining a fan output curve; the upper computer is also used for inputting control instructions;
the lower computer is also used for receiving a control instruction sent by the upper computer and driving the fan to operate according to the control instruction;
and the background terminal is used for receiving and displaying the operation parameters.
The working principle and the advantages of the invention are as follows:
in the scheme, in order to overcome the problem that natural wind cannot be generated in a laboratory, the fan is arranged to simulate natural wind, namely wind acting on the power generation fan blades is output by the fan, so that wind power generation of the power generation fan blades is realized, and smooth indoor implementation of a wind power generation simulation experiment is ensured; in the experimental process, the sensors can detect the operating parameters of the fan, the lower computer obtains the operating parameters, the wireless communication module is arranged, the wireless transceiving of data between the upper computer and the lower computer can be realized, and the upper computer inputs the operating parameters into a preset mathematical model after receiving the operating parameters and fits the operating parameters into a corresponding curve graph; through the curve graph, characteristics such as change trend can be shown, operating personnel of being convenient for look over more directly perceivedly and know the running state of fan, can effectively accomplish the control work to the fan. In addition, an operator can also send a control instruction through the upper computer, and the control instruction is sent to the lower computer through the wireless communication module so as to drive the fan to operate;
finally, the operator on duty can check the running parameters of the fan through the background terminal, know the running state of the fan and automatically judge whether the fan breaks down; the monitoring of the fan can be completed without on-site parking, so that the technical problem of unfavorable monitoring is solved.
And the wireless communication module is used for transmitting the operation parameters from the lower computer to the upper computer and the background terminal respectively.
Has the advantages that: and wireless data transmission is adopted, and compared with a wired transmission mode, the problem of wiring does not need to be considered, and the method is more convenient.
Further, the operation parameters comprise temperature information, vibration information and rotating speed information; the sensor is also used for acquiring environmental parameters and electrical parameters, wherein the environmental parameters comprise temperature and humidity information, and the electrical parameters comprise current information, voltage information and power information.
Has the advantages that: the collected data are more comprehensive, monitoring effectiveness is facilitated, and data of multiple dimensions can be provided for experimental analysis.
Further, the lower computer is also used for controlling the fan according to a preset control algorithm, and the control algorithm comprises a non-limit fault control algorithm and a limit fault control algorithm.
Has the advantages that: in general, a limit fault refers to an extreme situation when an actuator or detector completely loses its function of performing or detecting, and a non-limit fault refers to a partial failure of the actuator or detector; the dual fault-tolerant control algorithm formed by combining the two control algorithms can ensure that the system keeps stable operation under the conditions of limit faults and non-limit faults, thereby improving the reliability and robustness of the system.
Further, the sensor comprises a variable pitch motor encoder for detecting the position of the fan blade;
the lower computer is also used for matching a brake program from a preset relational mapping table according to the operation parameters of the fan when the fan stops rotating;
the lower computer is also used for outputting a control instruction according to the position of the fan blade and the braking program.
Has the advantages that: the fan runs from grid connection to standstill, different brake procedures can be caused according to the stopping mode, and therefore the blades can stop at different positions and different brake states can be caused; according to the scheme, the control instruction can be output through the lower computer according to the position of the blade and the brake program, so that the fan can automatically return to the running state.
Further, the operation parameters also comprise current information of a fan safety chain;
the lower computer is also used for receiving and judging the current information of the safety chain, if the current information is zero, judging that the current braking program is emergency shutdown, and controlling the shutdown protection of the fan according to a limit fault control algorithm; otherwise, controlling the fan to operate according to the non-limit fault.
Has the advantages that: the fault-tolerant operation under the non-limit fault and the shutdown protection under the limit fault can be ensured.
Further, the sensor also comprises a wind speed sensor for measuring wind speed information in the environment;
the lower computer is also used for receiving and judging the wind speed information when the fan stops rotating, and if the wind speed information is zero, the torque control of the fan is closed.
Has the advantages that: if the detected wind speed is zero, the fact that the fan stops rotating is indicated because the environment is windless; this condition corresponds to a non-limiting fault, and torque control may be turned off, reducing power consumption.
Furthermore, the upper computer also comprises a database, and the database is used for receiving, storing and operating parameters.
Has the advantages that: through the operating parameter of storage fan, can be convenient for follow-up analysis statistics and backtracking to the data.
Furthermore, the lower computer adopts an ADI DSP chip as a controller.
Has the advantages that: compared with the PLC, the control chip has smaller volume and low price; and the signal processing capability is stronger, which is beneficial to the signal transmission of the wireless network.
Further, the upper computer adopts a LabVIEW monitoring interface.
Has the advantages that: in the scheme, the LabVIEW monitoring interface can ensure visualization and good user interactivity, and is convenient for operators to observe the fan output curve in real time.
Drawings
Fig. 1 is a system block diagram of a first embodiment of a small wind farm monitoring system based on an upper computer and a lower computer.
Detailed Description
The following is further detailed by the specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a lower computer 1, an upper computer 2 and a wireless communication module 3.
Example one
As shown in fig. 1, the small-sized wind farm monitoring system based on the upper computer and the lower computer comprises a fan for outputting wind power, a sensor, a lower computer 1, an upper computer 2 and a background terminal, wherein:
the sensor is used for acquiring the operating parameters of the fan; specifically, the operation parameters in this embodiment include temperature information, vibration information, and rotation speed information; in other embodiments, the sensor is further configured to obtain an environmental parameter and an electrical parameter, the environmental parameter includes temperature and humidity information, and the electrical parameter includes current information, voltage information, and power information;
the lower computer 1 is used for receiving the operation parameters acquired by the sensor; the lower computer 1 adopts an ADI DSP chip as a controller, and compared with a PLC adopted in actual operation, the lower computer has smaller volume and low price; compared with a single chip microcomputer adopted by an independent wind driven generator experimental device, the DSP chip has stronger signal processing capacity and is beneficial to signal transmission of a wireless network;
the upper computer 2 is used for receiving and processing the operation parameters, inputting the operation parameters into a preset model and obtaining a fan output curve; the upper computer 2 is also used for inputting control instructions; in order to facilitate subsequent analysis, statistics and backtracking of the operating parameters, the upper computer 2 further comprises a database, and the database is used for receiving, storing and operating parameters. Specifically, the upper computer 2 adopts a LabVIEW monitoring interface and an SCADA database, compared with a QT monitoring interface and a special database which are adopted in actual operation, the development cost is lower, and the SCADA database is more friendly to a wind power generation system; the fan output curve is a curve representing the relationship among main performance parameters (such as air volume L, air pressure H, power N and efficiency eta) of the fan, and for convenient use, the H-L curve, the N-L curve and the eta-L curve can be drawn on the same graph, which is similar to the existing fan performance curve which is matched by Matlab and VB mixed editing and is not repeated herein; the LabVIEW monitoring interface can ensure visualization and good user interactivity, so that an operator can observe the fan output curve in real time conveniently, and a fan control instruction is optimized to enable the fan to reach the optimal running state;
the lower computer 1 is also used for receiving a control instruction sent by the upper computer 2 and driving the fan to operate according to the control instruction. In this embodiment, the control instruction is specifically the wind speed of the fan;
the background terminal is used for receiving and displaying the operation parameters; specifically, the background terminal is a desktop computer, and an operator on duty can check the operating parameters of the fan through the background terminal, know the operating state of the fan and automatically judge whether a fault occurs; the monitoring of the fan can be completed without on-site parking.
In this embodiment, the wireless communication device further includes a wireless communication module 3, configured to transmit the operating parameters from the lower computer 1 to the upper computer 2 and the background terminal, respectively; specifically, the wireless communication module 3 combines the GPRS remote transmission with the Wi-Fi field wireless transmission network, so that the problem of high cost of the conventional wired communication system can be solved, the realization of long-distance and short-distance transmission can be considered, the network transmission quality can be ensured, and the transmission delay and the network power consumption can be reduced.
Example two
Compared with the first embodiment, the difference is that the existing fan basically integrates a fan safety chain, a yaw system (also called a wind alignment device), a brake system, a gear box system and a frequency converter grid-connected system, in order to ensure fault-tolerant operation of the fan under non-extreme faults and shutdown protection under extreme faults, the lower computer 1 is also used for controlling the fan according to a preset control algorithm, and the control algorithm comprises a non-extreme fault control algorithm and an extreme fault control algorithm;
specifically, the sensor comprises a variable pitch motor encoder for detecting the position of a fan blade; the lower computer 1 is also used for matching a brake program from a preset relational mapping table according to the operation parameters of the fan when the fan stops rotating; the lower computer 1 is also used for outputting a control instruction according to the blade position and the brake program of the fan; wherein: the operation parameters also comprise current information of a fan safety chain; the lower computer 1 is also used for receiving and judging current information of the safety chain, and if the current information is zero, judging that the current braking program is emergency shutdown, controlling the shutdown protection of the fan according to a limit fault control algorithm; otherwise, controlling the fan to operate according to the non-limit fault; when the current information of the safety chain is zero, and the stopping position of the blade is 91 degrees measured by the variable pitch motor encoder, the failure and power loss of the safety chain (namely a safety chain system for protecting the wind generating set) of the fan are indicated, and the safety chain belongs to limit failure; the lower computer 1 is required to control the fan to break a safety chain, brake, close torque control and off-line, a built-in battery of the fan drives a propeller to change the propeller pitch, and the propeller blade is changed to 92.5 degrees at 15 degrees/second; thereby completing the shutdown protection control.
In another embodiment, the sensor further comprises a wind speed sensor for measuring wind speed information in the environment; the lower computer 1 is also used for receiving and judging wind speed information when the fan stops rotating, and if the wind speed information is zero, torque control of the fan is turned off. Specifically, when the wind speed information is zero, the stop position of the blade is measured to be 90 degrees through a variable pitch motor encoder, the fact that the fan stops rotating is that no wind exists in the environment and the fan belongs to a non-limit fault, the variable pitch system is controlled to change the blade to 70 degrees of a default setting at the speed of 5 degrees/second through the lower computer 1, and when the rotating speed is lower than the grid-connected rotating speed (generally 1200 revolutions per minute), torque control is closed and the fan is disconnected.
In other embodiments, the method further comprises a rapid shutdown in non-extreme faults, for example, when the fan stops rotating, a fault exists in a variable pitch system, the stopping position of the blade is 91 degrees, the torque control is closed and the off-line is carried out, the blade is changed to 92.5 degrees at 15 degrees/second, and the brake is braked (released after 30 s); when the frequency converter fails and the stop position of the paddle is 90 degrees, the control is closed and the screen is removed, and the paddle is changed to 90 degrees at 15 degrees/second.
After a fan is generally hoisted for the first time, the fan is generally rotated to a zero scale line through a manual operation box, and the current angle value of the encoder is recorded; because the variable pitch control is the most core part of a fan control algorithm, the main function of the variable pitch control is to output the optimal pitch angle position to a variable pitch system according to the current state of the fan, and ensure that the blades are always in the optimal position; however, when a power supply fails, the encoder cannot detect the movement of the blade, which means that after the system is completely powered off, the value of the pitch angle acquired by the encoder may be incorrect, and the correction of the blade stop position needs to be controlled according to different brake programs and blade positions, so that the reliable operation of the fan is ensured.
In conclusion, the lower computer 1 can automatically generate a control instruction according to the actual working condition after the fan fails, so that shutdown protection is completed; and the correction of the stopping position of the blade can be controlled according to the brake program and the position of the blade, so that the running of the fan is more reliable.
EXAMPLE III
Compared with the first embodiment, the difference is that the fan comprises a first fan blade group and a second fan blade group, the first fan blade group and the second fan blade group are both fixed on a rotating shaft of the fan, and the interval between the first fan blade group and the second fan blade group on the rotating shaft is 0.5 m; the first fan blade group and the second fan blade group are the same in size and shape, and the number of the fan blades is four; when the fan does not work, the four fan blades of the first fan blade group are respectively positioned at 0 degree, 90 degrees, 180 degrees and 270 degrees; the four fan blades of the first fan blade group are respectively positioned at 45 degrees, 135 degrees, 225 degrees and 315 degrees.
In the test process, the fan is used for simulating and blowing air to the driven end (a wind driven generator), so that the fan blades of the fan vibrate during working, and the wind energy is lost by external factors, so that the driven end receives irregular wind power; the problem that natural wind cannot be effectively simulated exists. According to the scheme, the two fan blade groups are arranged, so that the first fan blade group and the second fan blade group rotate coaxially and synchronously, the wind blown out by the first fan blade group and the second fan blade group is staggered, the wind waveform blown out by the first fan blade group is compensated and corrected through the second fan blade group, and a smooth waveform curve is formed.
In another embodiment, the system further comprises a wind speed sensor arranged in the outdoor environment and used for collecting wind speed information in the outdoor environment in real time; the upper computer is also used for receiving the wind speed information and the time information and generating an actual working condition curve of outdoor natural wind according to the time information and the wind speed information; the fan is also used for receiving the actual working condition curve and simulating outdoor natural wind according to the actual working condition curve. Setting a wind speed sensor in an outdoor environment, receiving data acquired by the sensor by an upper computer, generating a working condition curve of outdoor wind, and finally simulating natural wind by a fan; compare with the direct operating mode curve of predetermineeing among the present, adopt this scheme can be more effective, accurate simulate out instant outdoor natural wind.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. Small-size wind power plant monitored control system based on host computer and next machine, including the fan that is used for exporting wind-force, its characterized in that: still include sensor, lower computer, host computer and backstage terminal, wherein:
the sensor is used for acquiring the operating parameters of the fan;
the lower computer is used for receiving the operation parameters acquired by the sensor;
the upper computer is used for receiving and processing the operation parameters, inputting the operation parameters into a preset model and obtaining a fan output curve; the upper computer is also used for inputting control instructions;
the lower computer is also used for receiving a control instruction sent by the upper computer and driving the fan to operate according to the control instruction;
and the background terminal is used for receiving and displaying the operation parameters.
2. The small wind farm monitoring system based on an upper computer and a lower computer according to claim 1, characterized in that: the wireless communication module is used for transmitting the operation parameters from the lower computer to the upper computer and the background terminal respectively.
3. The small wind farm monitoring system based on an upper computer and a lower computer according to claim 1, characterized in that: the operation parameters comprise temperature information, vibration information and rotating speed information; the sensor is also used for acquiring environmental parameters and electrical parameters, wherein the environmental parameters comprise temperature and humidity information, and the electrical parameters comprise current information, voltage information and power information.
4. The small wind farm monitoring system based on an upper computer and a lower computer according to claim 1, characterized in that: the lower computer is also used for controlling the fan according to a preset control algorithm, and the control algorithm comprises a non-limit fault control algorithm and a limit fault control algorithm.
5. The small wind farm monitoring system based on an upper computer and a lower computer according to claim 4, characterized in that: the sensor comprises a variable pitch motor encoder for detecting the position of the fan blade;
the lower computer is also used for matching a brake program from a preset relational mapping table according to the operation parameters of the fan when the fan stops rotating;
the lower computer is also used for outputting a control instruction according to the position of the fan blade and the braking program.
6. The small wind farm monitoring system based on an upper computer and a lower computer according to claim 5, characterized in that: the operation parameters also comprise current information of a fan safety chain;
the lower computer is also used for receiving and judging current information of the safety chain, if the current information is smaller than a preset threshold value, judging that the current braking program is emergency shutdown, and controlling the shutdown protection of the fan according to a limit fault control algorithm; otherwise, controlling the fan to operate according to the non-limit fault.
7. The small wind farm monitoring system based on an upper computer and a lower computer according to claim 6, characterized in that: the sensor also comprises a wind speed sensor for measuring wind speed information in the environment;
the lower computer is also used for receiving and judging the wind speed information when the fan stops rotating, and if the wind speed information is zero, the torque control of the fan is closed.
8. The small wind farm monitoring system based on an upper computer and a lower computer according to claim 1, characterized in that: the upper computer also comprises a database, and the database is used for receiving, storing and managing the parameters.
9. The small wind farm monitoring system based on an upper computer and a lower computer according to claim 1, characterized in that: the lower computer adopts an ADI DSP chip as a controller.
10. The small wind farm monitoring system based on an upper computer and a lower computer according to claim 1, characterized in that: and the upper computer adopts a LabVIEW monitoring interface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011375361.6A CN112483453A (en) | 2020-11-30 | 2020-11-30 | Small-sized wind power plant monitoring system based on upper computer and lower computer |
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| CN202011375361.6A CN112483453A (en) | 2020-11-30 | 2020-11-30 | Small-sized wind power plant monitoring system based on upper computer and lower computer |
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| CN201936155U (en) * | 2010-11-11 | 2011-08-17 | 北京航天正信科技有限公司 | Online monitoring system for bus ventilator based on MODBUS-RTU (remote terminal unit) |
| CN103325290A (en) * | 2013-05-10 | 2013-09-25 | 重庆大学 | Method for stimulating deep sea floating type wind power generation |
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Application publication date: 20210312 |