阅读说明：本技术 一种用于风电领域的防雷监测装置 (Lightning protection monitoring device for wind power field ) 是由 罗少辉 蔡忠周 金欣 蔡永祥 唐文婷 王英建 胡亚男 王治邦 王玉娟 吉秀娟 韩 于 2021-01-22 设计创作，主要内容包括：本发明公开了一种用于风电领域的防雷监测装置,包括远程测控端,所述远程测控端与设于对应的风力发电设备上的监测装置信号连接,所述监测装置的信号输出端与设于风力发电设备上的主令控制部电性连接。本发明中,通过监测装置对雷电前的气象环境进行监测,由于雷电通常属于带正电荷区高电位,与负电荷区低电位的大地之间形成强电场,并随着电场强度的提高,空气以及雨水中的电子受到激发,进而跃迁而形成带电离子,并在电场作用下形成电子流,而监测装置主要用于监测风力发电设备附近的电子流变化状况,在电力流被激发成等离子导电状态前,给出精确的预警,通过主令控制部发出的保护命令,保护风力发电设备免遭破坏。(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.)

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).

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.