Lightning protection grounding detection device for booster station of wind power electric field

Abstract

The utility model provides a wind power electric field booster station lightning protection grounding detection device, which belongs to the field of electrical engineering, and comprises a bottom plate, the top of which is provided with a monitoring assembly used for monitoring lightning frequency. One side of the monitoring assembly is provided with a grounding resistance detection assembly used for detecting the ground resistance value. According to the utility model, the cover on the wire box is opened, the coil is pulled out, the two meter pens are installed at the measurement point positions, the grounding resistance is measured through the ohmmeter, the lightning arrester can be normally used if the resistance value is less than 5 ohms generally, otherwise, the lightning arrester is used after the geology is improved, and after the measurement is completed, the meter pens and the coil are put into the wire box. Damage caused by rainwater is prevented.

Description

Technical Field

[0001] This utility model relates to the field of electrical engineering, and more specifically, to a lightning protection grounding detection device for a wind farm booster station. Background Technology

[0002] With the continuous advancement of technology, the pursuit of more intelligent detection methods has become a trend. Intelligent monitoring methods have greatly improved the efficiency and accuracy of lightning protection detection, reduced the frequency and cost of manual inspections, and provided safer lightning protection for different industries.

[0003] A search revealed that Chinese Patent Publication No. CN220340271U discloses "a lightning protection grounding detection device for a wind farm booster station, comprising two conductors, a sealing mechanism at the upper end of the conductors, a protective mechanism at the lower part of the sealing mechanism, and the conductors connected to a detection component; the sealing mechanism includes a sealing cover, a connecting shell, and a water-cooling connector, with a water-cooling connector on the outer periphery of the conductor. This utility model describes a lightning protection grounding detection device for a wind farm booster station, which separates the upper end of the conductor from the soil through the water-cooling connector, separates the connector from the air through the sealing cover and sealing ring to prevent damage to the connector, and separates the conductor from the soil through rubber blocks, protective tubes, and protective tubes, thereby preventing damage from prolonged burial in the soil, effectively extending the service life of the device, and mitigating the impact of the soil on the detection. By unscrewing the sealing cover and clamping the connector around the connector, the grounding body can be detected through the main body of the detector; the operation is very simple." However, it still has the following drawbacks:

[0004] (1) This design has obvious shortcomings in the lightning protection monitoring system. Due to the lack of technical means to detect the operating status of lightning protection devices in real time, it is difficult to obtain comprehensive and accurate lightning activity parameters. This monitoring blind spot not only affects the in-depth analysis of lightning patterns, but may also threaten facility safety due to the inability to predict risks in time.

[0005] (2) In grounding resistance testing, the wires used for testing grounding resistance lack effective protection measures. During long-term use, the wires are continuously exposed to various environmental factors, which can easily lead to gradual damage to the originally exposed wires, thereby affecting the normal progress of the testing work and the accuracy of the data. To address this, a lightning protection grounding testing device for wind farm booster stations is proposed. Utility Model Content

[0006] The purpose of this invention is to address the significant shortcomings of current lightning protection monitoring systems. Due to the lack of technical means to monitor the operational status of lightning protection devices in real time, it is difficult to obtain comprehensive and accurate lightning activity parameters. This monitoring blind spot not only affects the in-depth analysis of lightning patterns but may also threaten facility safety due to the inability to predict risks in a timely manner. In grounding resistance testing, the wires used to test grounding resistance lack effective protection measures. During long-term use, the wires are continuously exposed to various environmental factors, which can easily lead to gradual damage to the originally exposed wires, thereby affecting the normal progress of the testing work and the accuracy of the data.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] The present invention is as follows: a lightning protection grounding detection device for a wind farm booster station, comprising a base plate, wherein a monitoring component for monitoring lightning frequency is provided on the top of the base plate, and a grounding resistance detection component for detecting ground resistance is installed on one side of the monitoring component.

[0009] The monitoring component includes a sleeve welded to one end of the top of a base plate. A flashing ring is welded to the top of the sleeve, and a tip is welded to the top of the flashing ring. Two grounding electrodes are welded to the bottom of the tip. The grounding electrodes penetrate the base plate and extend to the bottom side of the base plate. A protective layer is fixedly installed on the bottom periphery of the grounding electrode and is coaxially arranged with the grounding electrode. A detection chamber is provided at the top end of the base plate away from the sleeve. A circuit board is installed on one side of the inside of the detection chamber. A Rogowski coil is provided on the periphery of the grounding electrode at one end of the base plate. The Rogowski coil penetrates the sleeve and extends into the detection chamber and is connected to the circuit board. A signal conditioning module, a data acquisition module, and a communication module are installed on one side of the circuit board.

[0010] As a preferred technical solution of this utility model, the grounding resistance detection component includes an ohmmeter installed on one side of the detection chamber. An electrical box is installed at the bottom of the ohmmeter, and the electrical box is made of stainless steel. A coil is provided at the top inside the electrical box, and there are two coils that pass through the electrical box and are connected to the ohmmeter. A test lead is installed at one end of each of the two coils. A cover is hinged to the bottom of the electrical box, and a magnet is installed at one end of the cover. There are two magnets, which are symmetrically distributed.

[0011] As a preferred embodiment of this invention, a solar panel is installed on the top of the testing chamber, and a battery is installed on one side of the interior of the testing chamber.

[0012] As a preferred technical solution of this utility model, a warning light is installed on one side of the detection chamber, and the light color of the warning light is red. A laser light is installed on the top side of the ohmmeter in the detection chamber.

[0013] As a preferred technical solution of this utility model, the grounding electrode is coated with an anti-corrosion coating on the periphery below the base plate, and the material of the anti-corrosion coating is fluorocarbon paint.

[0014] As a preferred embodiment of this invention, the sleeve, lightning arrester ring, and tip are all made of aluminum alloy, and the grounding electrode is made of copper.

[0015] As a preferred embodiment of this utility model, each of the four corners of the base plate is welded with a positioning groove, and each of the four positioning grooves is bolted with a screw.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. By setting up monitoring components, during use, lightning is transmitted to the grounding electrode through the tip. The flashover ring increases the contact area, and finally the current is transmitted to the ground. At the same time, the Rogowski coil generates an induced voltage due to the current in the grounding electrode, which is transmitted to the circuit board. The signal strength is enhanced by the signal conditioning module (Advantech ADAM-4117). Then, the signal is converted into a digital signal by the data acquisition module (Advantech PCI-1716). Finally, the digital signal is transmitted to the receiving device by the communication module (GPRS), enabling remote monitoring of the device.

[0018] 2. By setting up a grounding resistance detection component, when using it, open the cover on the junction box, pull out the coil, and then install the two test leads at the measurement point. Then measure the grounding resistance with an ohmmeter. Generally, if the resistance value is less than 5 ohms, this lightning protection device can be used normally. Otherwise, the geological conditions should be improved before use. After the measurement is completed, put the test leads and coil back into the junction box to prevent rainwater from damaging it. Attached Figure Description

[0019] Figure 1 A schematic diagram of the lightning protection grounding detection device for a wind farm booster station provided by this utility model;

[0020] Figure 2 Right view of the lightning protection grounding detection device for a wind farm booster station provided by this utility model;

[0021] Figure 3 The lightning protection grounding detection device for wind farm booster stations provided by this utility model Figure 2 A schematic diagram of the three-dimensional cross-sectional structure at point AA;

[0022] Figure 4 The lightning protection grounding detection device for wind farm booster stations provided by this utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 A schematic diagram of the testing chamber of the lightning protection grounding testing device for a wind farm booster station provided by this utility model.

[0024] The diagram shows: 1. Base plate; 2. Monitoring component; 3. Grounding resistance detection component; 201. Sleeve; 202. Flash ring; 203. Tip; 204. Grounding electrode; 205. Protective layer; 206. Detection chamber; 207. Circuit board; 208. Rogowski coil; 209. Signal conditioning module; 210. Data acquisition module; 211. Communication module; 301. Ohmmeter; 302. Wire box; 303. Coil; 304. Test leads; 305. Cover; 306. Magnet; 4. Solar panel; 5. Battery; 6. Warning light; 7. Laser light; 8. Anti-corrosion coating; 9. Positioning groove; 10. Screw. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] like Figure 1 and Figure 5 As shown, this embodiment proposes a lightning protection grounding detection device for a wind farm booster station, including a base plate 1. A monitoring component 2 for monitoring lightning frequency is provided on the top of the base plate 1, and a grounding resistance detection component 3 for detecting ground resistance is installed on one side of the monitoring component 2.

[0030] like Figure 3 and Figure 5As shown, the monitoring component 2 includes a sleeve 201 welded to one end of the top of the base plate 1. A lightning arresting ring 202 is welded to the top of the sleeve 201 to expand the lightning contact area. A tip 203 is welded to the top of the lightning arresting ring 202, and a grounding body 204 is welded to the bottom of the tip 203. There are two grounding bodies 204 for conducting lightning to the ground. The grounding bodies 204 penetrate the base plate 1 and extend to the bottom side of the base plate 1. A protective layer 205 is fixedly installed on the bottom periphery of the grounding body 204 and is coaxially arranged with the grounding body 204. A detection chamber 206 is provided at the top of the base plate 1 away from the sleeve 201. A circuit board 207 is installed on one side of the inside of the detection chamber 206. A Rogowski coil 208 is provided on the periphery of the grounding body 204 at one end of the base plate 1, and the Rogowski coil 208 penetrates the sleeve 201 and extends to the detection chamber 206. Inside 06, it is connected to circuit board 207. Circuit board 207 has a signal conditioning module 209, a data acquisition module 210, and a communication module 211 installed on one side. In use, lightning is transmitted to the grounding body 204 through the tip 203. The lightning arrester 202 increases the contact area and finally transmits the current to the ground. At the same time, the Rogowski coil 208 generates an induced voltage due to the current in the grounding body 204 and transmits it to circuit board 207. The signal strength is enhanced by the signal conditioning module 209 (Advantech ADAM-4117). Then, the signal is converted into a digital signal by the data acquisition module 210 (Advantech PCI-1716). Finally, the digital signal is transmitted to the receiving device by the communication module 211, which enables remote monitoring of the device (GPRS).

[0031] like Figure 4 As shown, the grounding resistance detection assembly 3 includes an ohmmeter 301 installed on one side of the detection chamber 206 for measuring grounding resistance. A junction box 302, made of stainless steel, is installed at the bottom of the ohmmeter 301. Two coils 303 are installed inside the junction box 302 and connect to the ohmmeter 301. A test lead 304 is installed at one end of each coil 303. A cover 305 is hinged to the bottom of the junction box 302, and one end of the cover 305 is fitted with... There are two magnets 306, symmetrically distributed, used in conjunction with the opening and closing of the electrical box. When in use, open the cover 305 on the electrical box, pull out the coil 303, and then install the two test leads 304 at the measurement point. Then measure the grounding resistance with an ohmmeter 301. Generally, if the resistance is less than 5 ohms, this lightning protection device can be used normally. Otherwise, the geological conditions should be improved before use. After the measurement is completed, put the test leads 304 and the coil 303 into the electrical box 302 to prevent rainwater from damaging them.

[0032] like Figure 5As shown, a solar panel 4 is installed on the top of the detection chamber 206, and a battery 5 is installed on one side of the interior of the detection chamber 206. When in use, the solar panel 4 generates current by irradiating sunlight during the day, which is stored in the battery 5 and used to power the electrical equipment in the device. When there is no sunlight, the power stored in the battery 5 is used to power the electrical equipment in the device.

[0033] like Figure 1 and Figure 5 As shown, a warning light 6 is installed on one side of the detection chamber 206, and the light color of the warning light 6 is red. A laser light 7 is installed on the top side of the ohmmeter 301 in the detection chamber 206. When the monitoring component 2 detects that lightning has passed, the warning light 6 will light up to remind passers-by to be careful.

[0034] like Figure 3 As shown, the grounding electrode 204 is coated with an anti-corrosion coating 8 on the periphery below the base plate 1, and the material of the anti-corrosion coating 8 is fluorocarbon paint. When in use, the grounding electrode 204 will be protected by the anti-corrosion coating 8, the corrosion of the grounding electrode 204 by the soil will be reduced, and the service life of the grounding electrode 204 will be improved.

[0035] like Figure 3 As shown, the sleeve 201, the flash ring 202, and the tip 203 are all made of aluminum alloy, while the grounding body 204 is made of copper. When in use, the aluminum alloy sleeve 201, the flash ring 202, and the tip 203 are lightweight and have good conductivity, which can reduce the weight of the device. The copper grounding body 204 has excellent conductivity and can quickly conduct current to the ground.

[0036] like Figure 4 As shown, positioning grooves 9 are welded to the four top corners of the base plate 1, and screws 10 are bolted to the four positioning grooves 9. When in use, the grounding body 204 is inserted into the soil at the target location, and then the screws 10 are inserted into the ground through the positioning grooves 9 to fix the device.

[0037] Specifically, in use, the lightning protection grounding detection device for this wind farm booster station works as follows: lightning is transmitted through the tip 203 to the grounding electrode 204. The flashover ring 202 increases the contact area, ultimately allowing the current to be transmitted to the ground. Simultaneously, the Rogowski coil 208 generates an induced voltage due to the current in the grounding electrode 204, which is transmitted to the circuit board 207. The signal strength is enhanced by the signal conditioning module 209 (Advantech ADAM-4117). Then, the signal is converted into a digital signal by the data acquisition module 210 (Advantech PCI-1716). Finally, the digital signal is transmitted to the receiving device via the communication module 211, enabling remote monitoring of the device. This module is a GPRS (GPRS) system. Figure 3 and Figure 5By opening the cover 305 on the junction box, pull out the coil 303, and then install the two test leads 304 at the measurement point. Then, measure the grounding resistance using an ohmmeter 301. Generally, if the resistance is less than 5 ohms, this lightning arrester can be used normally; otherwise, the geological conditions should be improved before use. After the measurement is completed, put the test leads 304 and the coil 303 back into the junction box 302 to prevent rainwater from damaging them. Figure 4 ).

[0038] All technical features in this embodiment can be freely combined according to actual needs.

[0039] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A lightning protection grounding detection device for a wind farm booster station, comprising a base plate (1), characterized in that, The top of the base plate (1) is provided with a monitoring component (2) for monitoring lightning frequency, and a grounding resistance detection component (3) for detecting ground resistance is installed on one side of the monitoring component (2). The monitoring component (2) includes a sleeve (201) welded to one end of the top of the base plate (1). A lightning arrester ring (202) is welded to the top of the sleeve (201), and a tip (203) is welded to the top of the lightning arrester ring (202). A grounding electrode (204) is welded to the bottom of the tip (203). There are two grounding electrodes (204). The grounding electrodes (204) penetrate the base plate (1) and extend to the bottom side of the base plate (1). A protective layer (205) is fixedly installed on the bottom periphery of the grounding electrode (204) and is coaxial with the grounding electrode (204). The bottom plate (1) has a detection chamber (206) at the top end away from the sleeve (201). A circuit board (207) is installed inside the detection chamber (206). A Rogowski coil (208) is arranged around the grounding body (204) at one end of the bottom plate (1). The Rogowski coil (208) passes through the sleeve (201) and extends into the detection chamber (206), and is connected to the circuit board (207). A signal conditioning module (209), a data acquisition module (210), and a communication module (211) are installed on one side of the circuit board (207).

2. The lightning protection grounding detection device for a wind farm booster station according to claim 1, characterized in that, The grounding resistance detection component (3) includes an ohmmeter (301) installed on one side of the detection chamber (206). An electrical box (302) is installed at the bottom of the ohmmeter (301), and the electrical box (302) is made of stainless steel. A coil (303) is provided at the top inside the electrical box (302), and there are two coils (303), which pass through the electrical box (302) and are connected to the ohmmeter (301). A test lead (304) is installed at one end of each of the two coils (303). A cover (305) is hinged to the bottom of the electrical box (302), and a magnet (306) is installed at one end of the cover (305). There are two magnets (306), which are symmetrically distributed.

3. The lightning protection grounding detection device for a wind farm booster station according to claim 1, characterized in that, A solar panel (4) is installed on the top of the detection chamber (206), and a battery (5) is installed on one side of the interior of the detection chamber (206).

4. The lightning protection grounding detection device for a wind farm booster station according to claim 1, characterized in that, A warning light (6) is installed on one side of the detection chamber (206), and the light color of the warning light (6) is red. A laser light (7) is installed on the top side of the ohmmeter (301) in the detection chamber (206).

5. The lightning protection grounding detection device for a wind farm booster station according to claim 1, characterized in that, The grounding electrode (204) has an anti-corrosion coating (8) on its periphery below the base plate (1), and the material of the anti-corrosion coating (8) is fluorocarbon paint.

6. The lightning protection grounding detection device for a wind farm booster station according to claim 1, characterized in that, The sleeve (201), the flash ring (202), and the tip (203) are all made of aluminum alloy, and the grounding body (204) is made of copper.

7. The lightning protection grounding detection device for a wind farm booster station according to claim 1, characterized in that, The base plate (1) has four apex corners welded with positioning grooves (9), and each of the four positioning grooves (9) is bolted with a screw (10).

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