CN112879241A - Lightning protection monitoring device for wind power field - Google Patents
Lightning protection monitoring device for wind power field Download PDFInfo
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- CN112879241A CN112879241A CN202110088491.XA CN202110088491A CN112879241A CN 112879241 A CN112879241 A CN 112879241A CN 202110088491 A CN202110088491 A CN 202110088491A CN 112879241 A CN112879241 A CN 112879241A
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- wind power
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 52
- 238000010248 power generation Methods 0.000 claims abstract description 47
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 230000005684 electric field Effects 0.000 claims description 29
- 230000001012 protector Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 6
- 208000025274 Lightning injury Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
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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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- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a lightning protection monitoring device used in the field of wind power, which comprises a remote measurement and control end, wherein the remote measurement and control end is in signal connection with a monitoring device arranged on corresponding wind power generation equipment, and a signal output end of the monitoring device is electrically connected with a master control part arranged on the wind power generation equipment. The monitoring device is mainly used for monitoring the change condition of the electron current near the wind power generation equipment, giving accurate early warning before the power current is excited to be in a plasma conductive state, and protecting the wind power generation equipment from being damaged by a protection command sent by the master control part.
Description
Technical Field
The invention relates to the field of lightning protection monitoring, in particular to a lightning protection monitoring device used in the field of wind power.
Background
The wind driven generator is mostly located in areas with more lightning strikes such as plateaus, mountains and seasides, and the probability of suffering from the lightning strikes is higher due to the characteristics of the wind driven generator. With the increase of the generated power and the rapid increase of the total installed amount of wind power, the loss of the wind driven generator caused by lightning stroke is not negligible. However, in the existing lightning protection monitoring method and equipment in the field of wind power, various data of lightning stroke of the wind driven generator are mainly detected and recorded through monitoring equipment, so that the time, frequency, amplitude and the like of the lightning stroke of the wind driven generator are accurately mastered, but the monitoring device cannot well protect the wind driven generator and cannot prevent the wind driven generator from being damaged.
Disclosure of Invention
The invention aims to provide a lightning protection monitoring device used in the field of wind power, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a lightning protection monitoring device used in the field of wind power comprises a remote measurement and control end, wherein the remote measurement and control end is in signal connection with a monitoring device arranged on corresponding wind power generation equipment, and a signal output end of the monitoring device is electrically connected with a master control part arranged on the wind power generation equipment;
the monitoring device is arranged at the top of the wind power generation equipment and used for monitoring and acquiring the potential difference between the position of the wind power generation equipment and the ground and the electric field intensity near the monitoring device in real time and sending the monitoring result to the remote measurement and control end, and the remote measurement and control end analyzes and processes the received data;
the master control part receives and compares whether the peak value of the monitoring data sent by the monitoring device reaches the warning value, and if the peak value does not reach the warning value, the wind power generation equipment continues to work; and if the alarm value is reached, the wind power generation equipment enters a protection mode.
Furthermore, monitoring devices includes the electric field appearance, electric field appearance and ground resistance electric connection, the signal output part of electric field appearance and signal processing circuit's signal contact end electric connection, signal processing circuit's signal output part and remote measurement and control end and master control portion's signal input part electric connection.
Further, the monitoring device comprises a camera, a camera of the camera adopts a wide angle of 180 degrees, the camera is right above the camera, and the camera is grounded.
Furthermore, the signal output end of the camera is electrically connected with the signal input end of the remote measurement and control end.
Furthermore, monitoring devices includes temperature and humidity sensor and the wind power measuring apparatu of being connected with wind power generation equipment, temperature and humidity sensor and wind power measuring apparatu's signal output part and long-range observing and controlling end and master control portion's signal input part electric connection.
Furthermore, the wind power generation equipment is provided with an external power supply, and the electric field instrument, the camera, the temperature and humidity sensor and the wind power measuring instrument are electrically connected with the external power supply.
Furthermore, a circuit protector is arranged on a power generation circuit inside the wind power generation equipment, and a signal receiving end of the circuit protector is electrically connected with a signal sending end of the master control part.
Furthermore, the circuit protector comprises a multi-station switch, the power output end of the wind power generation equipment is electrically connected with the input end of the multi-station switch, and the output end of the multi-station switch comprises a collecting end and a grounding end.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, the meteorological environment before the lightning is monitored by the monitoring device, because the lightning usually belongs to the high potential of the positively charged area, a strong electric field is formed between the negative charge area and the ground with low potential, and along with the increase of the electric field intensity, electrons in air and rainwater are excited, further transits to form charged ions and forms electron current under the action of an electric field, and the monitoring device is mainly used for monitoring the change condition of the electron current near the wind power generation equipment, before the power current is excited into a plasma conducting state, an accurate early warning is given, the wind power generation equipment is protected from being damaged through a protection command sent by the master control part, meanwhile, data in the monitoring process are sent to a remote measurement and control end and stored in a historical database, and a lightning simulation model is built for accurate prediction, so that the wind driven generator is better protected in a thunderstorm environment.
Drawings
FIG. 1 is a block diagram of a lightning protection monitoring device used in the wind power field;
FIG. 2 is a block diagram of a monitoring device in a lightning protection monitoring device for wind power generation;
fig. 3 is a block diagram of a circuit protector in a lightning protection monitoring device used in the field of wind power.
In the figure: 1. a remote measurement and control terminal; 2. a monitoring device; 21. an electric field instrument; 22. an electric signal processing circuit; 23. a camera; 24. a temperature and humidity sensor; 25. a wind power measuring instrument; 3. a master control unit; 4. an external power supply; 5. a circuit protector; 51. a multi-station switch; 52. a collection end; 53. and a ground terminal.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution:
a lightning protection monitoring device used in the field of wind power comprises a remote measurement and control end 1, wherein the remote measurement and control end 1 is in signal connection with a monitoring device 2 arranged on corresponding wind power generation equipment, and a signal output end of the monitoring device 2 is electrically connected with a master control part 3 arranged on the wind power generation equipment;
the monitoring device 2 is arranged at the top of the wind power generation equipment and used for monitoring and acquiring the potential difference between the position of the wind power generation equipment and the ground and the electric field intensity near the monitoring device 2 in real time and sending the monitoring result to the remote measurement and control terminal 1, and the remote measurement and control terminal 1 analyzes and processes the received data;
the master control part 3 receives and compares whether the peak value of the monitoring data sent by the monitoring device 2 reaches the warning value, and if the peak value does not reach the warning value, the wind power generation equipment continues to work; and if the alarm value is reached, the wind power generation equipment enters a protection mode.
In the scheme, the meteorological environment before the thunder is monitored by the monitoring device 2, because the thunder usually belongs to the high potential of a positive charge area and forms a strong electric field with the ground of a negative charge area, along with the improvement of the electric field intensity (before the discharge), electrons in air and rainwater are excited and further jump to form charged ions, and form electron current under the action of the electric field, the monitoring device 2 is mainly used for monitoring the change condition of the electron current near the wind power generation equipment (mainly a wind power generator), before the electricity current is excited into a plasma conductive state (namely the thunder), accurate early warning is given, the wind power generation equipment is protected from being damaged by a protection command sent by the master control part 3, meanwhile, data in the monitoring process is sent to the remote measurement and control end 1 and stored in a historical database and used for constructing a thunder simulation model, the method is used for accurate prediction, so that the wind driven generator is better protected in a thunderstorm environment.
In one embodiment, the monitoring device 2 includes an electric field meter 21, the electric field meter 21 is electrically connected to the ground resistor, a signal output end of the electric field meter 21 is electrically connected to a signal contact end of the electrical signal processing circuit 22, and a signal output end of the electrical signal processing circuit 22 is electrically connected to the remote measurement and control end 1 and a signal input end of the master control unit 3.
The electric field instrument 21 is used for measuring the changes of the ground atmospheric electric field and the cloud layer electric field in clear and thunderstorm weather, the atmospheric electric field is measured by utilizing the principle of induced charges generated by a conductor in the electric field, the potential difference between the earth and the electric field instrument 21 can be calculated, and the master control part 3 is triggered to send a protection command according to whether the potential difference reaches an alert value.
In one embodiment, the monitoring device 2 includes a camera 23, a camera of the camera 23 has a wide angle of 180 degrees, the camera is located right above the camera, the camera 23 is grounded, and a signal output end of the camera 23 is electrically connected to a signal input end of the remote measurement and control terminal 1.
The time of the lightning, the speed of the lightning and the structure of the lightning are recorded by the camera 23, signals are sent to the remote measurement and control terminal 1, and the lightning is stored and recorded in the form of pictures or images for later research.
In one embodiment, the monitoring device 2 includes a temperature and humidity sensor 24 and a wind power measuring instrument 25 connected to the wind power generating equipment, and signal output ends of the temperature and humidity sensor 24 and the wind power measuring instrument 25 are electrically connected to signal input ends of the remote measurement and control end 1 and the master control portion 3.
The method is used for recording meteorological environments such as ambient temperature, ambient humidity and wind power during lightning so as to provide more accurate measurement data and carry out components of the lightning simulation model. Meanwhile, the master control unit 3 can conveniently know the operating environment condition of the wind power generation equipment.
In addition, the wind power generation equipment is provided with an external power supply 4, and the electric field instrument 21, the camera 23, the temperature and humidity sensor 24 and the wind power measuring instrument 25 are electrically connected with the external power supply 4, so that the wind power generation equipment does not share a circuit with the electric field instrument 21, the camera 23, the temperature and humidity sensor 24 and the wind power measuring instrument 25, and further an interlocking fault is caused.
In addition, a circuit protector 5 is arranged on a power generation circuit in the wind power generation equipment, and a signal receiving end of the circuit protector 5 is electrically connected with a signal sending end of the master control part 3.
In one embodiment, the circuit protector 5 is preferably of the following construction: the multi-station switch 51 is included, an electric output end of the wind power generation equipment is electrically connected with an input end of the multi-station switch 51, and an output end of the multi-station switch 51 comprises a collection end 52 and a grounding end 53.
When detecting that nearby lightning is about to occur, the master control part 3 sends an action command to the circuit protector 5, the multi-station switch 51 is actuated, and the power output end of the wind power generation equipment is connected with the grounding end 53 and used for increasing the large ground voltage nearby the wind power generation equipment, so that the lightning is prevented from being generated nearby the wind power generation equipment, and the wind power generation equipment is prevented from being struck by lightning.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which includes the appended claims and their equivalents.
Claims (8)
1. The utility model provides a lightning protection monitoring devices for wind-powered electricity generation field, includes long-range observing and controlling end (1), its characterized in that: the remote measurement and control end (1) is in signal connection with a monitoring device (2) arranged on the corresponding wind power generation equipment, and the signal output end of the monitoring device (2) is electrically connected with a master control part (3) arranged on the wind power generation equipment;
the monitoring device (2) is arranged at the top of the wind power generation equipment and used for monitoring and acquiring the potential difference between the position of the wind power generation equipment and the ground in real time and the electric field intensity near the monitoring device (2) and sending the monitoring result to the remote measurement and control terminal (1), and the remote measurement and control terminal (1) analyzes and processes the received data;
the master control part (3) receives and compares whether the peak value of the monitoring data sent by the monitoring device (2) reaches a warning value, and if the peak value does not reach the warning value, the wind power generation equipment continues to work; and if the alarm value is reached, the wind power generation equipment enters a protection mode.
2. The lightning protection monitoring device for the field of wind power according to claim 1, characterized in that: monitoring devices (2) include electric field appearance (21), electric field appearance (21) and ground resistance electric connection, the signal output part of electric field appearance (21) and the signal contact end electric connection of signal processing circuit (22), the signal output part and the long-range signal input part electric connection who observes and controls end (1) and master control portion (3) of signal processing circuit (22).
3. The lightning protection monitoring device for the field of wind power according to claim 1, characterized in that: the monitoring device (2) comprises a camera (23), a camera of the camera (23) adopts a wide angle of 180 degrees, the camera is right above the camera, and the camera (23) is grounded.
4. The lightning protection monitoring device for the field of wind power according to claim 3, characterized in that: and the signal output end of the camera (23) is electrically connected with the signal input end of the remote measurement and control end (1).
5. The lightning protection monitoring device for the field of wind power according to claim 1, characterized in that: the monitoring device (2) comprises a temperature and humidity sensor (24) and a wind power measuring instrument (25) connected with wind power generation equipment, and signal output ends of the temperature and humidity sensor (24) and the wind power measuring instrument (25) are electrically connected with signal input ends of the remote measurement and control end (1) and the master control part (3).
6. A lightning protection monitoring device for wind power field according to one of claims 2-5, characterized in that: the wind power generation equipment is provided with an external power supply (4), and the electric field instrument (21), the camera (23), the temperature and humidity sensor (24) and the wind power measuring instrument (25) are electrically connected with the external power supply (4).
7. The lightning protection monitoring device for the field of wind power according to claim 6, characterized in that: a circuit protector (5) is arranged on a power generation circuit inside the wind power generation equipment, and a signal receiving end of the circuit protector (5) is electrically connected with a signal sending end of the master control part (3).
8. The lightning protection monitoring device for the field of wind power according to claim 7, characterized in that: the circuit protector (5) comprises a multi-station switch (51), the power output end of the wind power generation equipment is electrically connected with the input end of the multi-station switch (51), and the output end of the multi-station switch (51) comprises a collecting end (52) and a grounding end (53).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110088491.XA CN112879241A (en) | 2021-01-22 | 2021-01-22 | Lightning protection monitoring device for wind power field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110088491.XA CN112879241A (en) | 2021-01-22 | 2021-01-22 | Lightning protection monitoring device for wind power field |
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| Publication Number | Publication Date |
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| CN112879241A true CN112879241A (en) | 2021-06-01 |
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| CN202110088491.XA Pending CN112879241A (en) | 2021-01-22 | 2021-01-22 | Lightning protection monitoring device for wind power field |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776042A (en) * | 2010-01-07 | 2010-07-14 | 南京科远自动化集团股份有限公司 | Stand-by safety chain monitoring and protecting device for wind power generation control system |
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| US20140127014A1 (en) * | 2011-07-15 | 2014-05-08 | Suzlon Energy Gmbh | Safety chain and method for operating a wind turbine |
| EP2730780A1 (en) * | 2012-11-07 | 2014-05-14 | Siemens Aktiengesellschaft | Wind power plant with an electric brake device |
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| CN209586594U (en) * | 2019-01-28 | 2019-11-05 | 四川中光防雷科技股份有限公司 | Wind-powered electricity generation multichannel lightning monitoring system |
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-
2021
- 2021-01-22 CN CN202110088491.XA patent/CN112879241A/en active Pending
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Application publication date: 20210601 |