A new lightning suppression and interception device for new energy power collection line

Abstract

The utility model relates to lightning protection technical field, and disclose a new new energy power collection line lightning suppression and intercept device, including cylinder, the both ends of cylinder are provided with lightning receptor and a group of lightning conductor respectively, still include: arc extinguishing mechanism, the arc extinguishing mechanism sets up in the inside of cylinder and is used to carry out arc extinguishing operation and reduces the thermal destruction and electromagnetic interference of lightning current, wherein, the arc extinguishing mechanism includes central conductor and the spiral electrode of setting to its outside, the central conductor sets up on the axis of cylinder, the spiral electrode installs to the inside of cylinder, adopts arc extinguishing treatment to cooperate with circulating cooling, and the energy and heat of arc production are suppressed, reduce lightning protection component damage, can adapt to continuous lightning stroke, guarantee the intercept effect to lightning.

Description

Technical Field

[0001] This utility model relates to the field of lightning protection technology, specifically a new type of lightning suppression and interception device for new energy power collection lines. Background Technology

[0002] The expansion of the power grid has made lightning strikes a major hidden danger affecting the stability of the power grid. According to statistics, in areas of China with high tripping rates, tripping caused by lightning accounts for about 40% to 70% of the total tripping. Therefore, when using new energy collection lines, it is necessary to suppress and intercept lightning and complete protective measures.

[0003] In existing technologies, lightning protection typically involves diverting lightning to the ground, using lightning arresters to absorb the lightning, and then guiding it to the ground via lightning conductors after passing through surge arresters.

[0004] However, the above methods are prone to the following defects in actual use: after lightning is introduced, although the lightning can be guided to the ground, it cannot effectively suppress the lightning. The energy and heat generated by the electric arc can easily damage the lightning protection components, making it difficult to adapt to continuous lightning strikes, resulting in poor lightning interception effect. Utility Model Content

[0005] The purpose of this invention is to provide a novel lightning suppression and interception device for new energy power collection lines, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel lightning suppression and interception device for new energy power collection lines, comprising a cylinder, with lightning arresters and a set of lightning conductors respectively provided at both ends of the cylinder, and further comprising: an arc extinguishing mechanism, wherein the arc extinguishing mechanism is disposed inside the cylinder and is used to perform arc extinguishing operations to reduce the thermal damage and electromagnetic interference of lightning current; wherein, the arc extinguishing mechanism comprises a central conductor and a spiral electrode sleeved to its outer side, the central conductor being disposed on the axis of the cylinder, and the spiral electrode being installed inside the cylinder.

[0007] Preferably, the arc extinguishing mechanism further includes three sets of arc extinguishing grids arranged in a ring, the three sets of arc extinguishing grids being installed in the cylinder from top to bottom, with adjacent sets of arc extinguishing grids being staggered.

[0008] Preferably, the cylinder has an internal cavity, and two conduits communicating with the cavity are provided on the cylinder, with a solenoid valve provided on the outside of the conduits.

[0009] Preferably, the arc-extinguishing grid is made of metal, and one side of the arc-extinguishing grid extends into the cavity.

[0010] Preferably, insulating sleeves are embedded at both ends of the cylinder, and the lightning arrester and the lightning conductor are respectively connected to the central conductor through the two insulating sleeves.

[0011] Preferably, the cylindrical body is made of insulating material, and the spiral electrode is made of chromium zirconium copper.

[0012] Preferably, the arc-quenching grid is located below the spiral electrode.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention sets up a central conductor and a spiral electrode. After the lightning current is introduced, it breaks down the gap between the central conductor and the spiral electrode to form a plasma arc bridge. This allows one current to move along the main path of the arc itself, and another current to move along the spiral electrode. This causes the arc to be elongated and rotated. Combined with an insulating cylinder, the energy is absorbed and deionized, thus completing the arc extinguishing operation and reducing the occurrence of cylinder damage. This invention uses an arc-extinguishing grid to contact and separate the electric arc, thereby forcing the arc to extinguish. At the same time, the arc-extinguishing grid can transfer the heat generated by the arc, accelerate cooling, and suppress the energy and heat generated by the arc. It can adapt to continuous lightning strikes and ensure the interception effect of lightning. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the lightning suppression and interception device for new energy power collection lines provided by this utility model; Figure 2 A cross-sectional schematic diagram of the cylinder and cavity provided by this utility model; Figure 3 for Figure 2 Enlarged view of A in the middle; Figure 4 This is a top view of the arc-extinguishing grid provided by this utility model.

[0015] In the diagram: 100, cylinder; 110, conduit; 111, cavity; 112, solenoid valve; 120, insulating sleeve; 200, lightning arrester; 300, lightning conductor; 400, arc extinguishing mechanism; 410, central conductor; 420, spiral electrode; 430, arc extinguishing grid. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 As shown, a novel lightning suppression and interception device for new energy power collection lines includes a cylindrical body 100, with lightning arresters 200 and a set of lightning conductors 300 respectively installed at both ends of the cylindrical body 100. It also includes an arc extinguishing mechanism 400, which is installed inside the cylindrical body 100 and is used to perform arc extinguishing operations to reduce the thermal damage and electromagnetic interference of lightning current. The arc extinguishing mechanism 400 includes a central conductor 410 and a spiral electrode 420 sleeved on its outer side. The central conductor 410 is located on the axis of the cylindrical body 100, and the spiral electrode 420 is installed inside the cylindrical body 100.

[0018] Lightning is attracted by the lightning arrester 200, and then the lightning current is introduced into the cylinder 100 to withstand the explosive pressure generated by the lightning overvoltage and the release of arc energy. After the lightning current is introduced, it breaks down the gap between the central conductor 410 and the spiral electrode 420, forming a plasma arc bridge. One current moves along the main path from the arc itself, and the other current moves along the spiral electrode 420. The current shunted to the spiral electrode 420 flows along the spiral path. According to the right-hand rule, a strong axial magnetic field is generated in the center of the cylinder 100, parallel to the central conductor 410. This generates a tangential force that drives the arc to rotate, causing the arc to be elongated and rotated. Its energy is quickly dissipated, achieving the arc extinguishing effect. Subsequently, the lightning charge is introduced into the ground by the lightning conductor 300, completing the protection of the collecting line.

[0019] It should be noted that the cylinder 100 is sealed. The cylinder 100 can be filled with sulfur hexafluoride gas, which has extremely strong electronegativity and can efficiently capture free electrons, cool and compress the electric arc, and extinguish it quickly. The number of turns of the spiral electrode 420 and the gap between it and the central conductor 410 can be selected according to actual usage requirements.

[0020] The arc extinguishing mechanism 400 also includes three sets of arc extinguishing grid plates 430 arranged in a ring. The three sets of arc extinguishing grid plates 430 are installed in the cylinder 100 from top to bottom, and the adjacent sets of arc extinguishing grid plates 430 are staggered.

[0021] After the lightning current undergoes the above-mentioned arc extinguishing treatment, the arc participating in the arc will be divided into multiple short arcs connected in series after contacting the arc extinguishing grid plate 430. The series connection of multiple short arcs causes the total voltage required to maintain the arc to rise sharply, quickly exceeding the system voltage, thereby forcing the arc to extinguish and assisting in completing the arc extinguishing operation.

[0022] Furthermore, its multi-point staggered distribution can absorb and transfer the heat energy generated by the electric arc, accelerating cooling.

[0023] The cylinder 100 has an internal cavity 111, and two conduits 110 communicating with the cavity 111 are provided on the cylinder 100. A solenoid valve 112 is provided on the outside of the conduit 110.

[0024] Users can connect the bottom conduit 110 to the coolant delivery end and the top conduit 110 to the coolant return end. The residual heat on the cylinder 100 can be removed by the cooling circulation process. The coolant can be driven by a delivery pump and controlled by a solenoid valve 112 to open and close the conduit 110.

[0025] The arc-extinguishing grid 430 is made of metal, which facilitates heat energy conduction. One side of the arc-extinguishing grid 430 extends into the cavity 111.

[0026] When the coolant comes into contact with the arc-extinguishing grid 430 in the cavity 111, it can form turbulent flow to improve the cooling effect and further improve the heat dissipation efficiency of the arc-extinguishing grid 430, thereby reducing the thermal damage caused by lightning current.

[0027] Insulating sleeves 120 are embedded at both ends of the cylinder 100. The lightning arrester 200 and the lightning conductor 300 are respectively connected to the central conductor 410 through the two insulating sleeves 120. The cylinder 100 is made of insulating material, and the spiral electrode 420 is made of chromium zirconium copper.

[0028] The cylinder 100 can be made of high-strength ceramic, which has extremely high insulation strength, high temperature resistance and mechanical strength. This allows the spiral electrode 420 to have high conductivity, high melting point, arc erosion resistance and mechanical strength. The combination of insulating sleeve 120 and insulating cylinder 100 can reduce the occurrence of lightning current leakage.

[0029] The arc-extinguishing grid 430 is located below the spiral electrode 420.

[0030] The arc extinguishing operation will be carried out step by step from top to bottom to improve the comprehensiveness of the operation.

[0031] Working principle: This device is not directly connected to the collector line, but is located above it. Taking advantage of its height and position, it guides the lightning to itself using the lightning arrester 200, achieving an interception effect based on the collector line. During the interception process, lightning is suppressed. The central conductor 410 and the spiral electrode 420 are used to divert the arc, causing the arc to be elongated and rotated, thus consuming energy. Then, the arc-extinguishing grid 430 is used to separate the arc, assisting in the arc-extinguishing operation. Subsequently, the lightning charge is conducted to the ground by the lightning conductor 300, protecting the collector line from damage.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel lightning suppression and interception device for new energy power collection lines, comprising a cylindrical body (100), wherein a lightning arrester (200) and a set of lightning conductors (300) are respectively provided at both ends of the cylindrical body (100), characterized in that, Also includes: Arc extinguishing mechanism (400), which is disposed inside the cylinder (100) and is used to perform arc extinguishing operations to reduce the thermal damage and electromagnetic interference of lightning current; The arc extinguishing mechanism (400) includes a central conductor (410) and a spiral electrode (420) sleeved on its outer side. The central conductor (410) is disposed on the axis of the cylinder (100), and the spiral electrode (420) is installed inside the cylinder (100).

2. The lightning suppression and interception device for a novel new energy power collection line according to claim 1, characterized in that: The arc extinguishing mechanism (400) also includes three sets of arc extinguishing grid plates (430) arranged in a ring. The three sets of arc extinguishing grid plates (430) are installed in the cylinder (100) from top to bottom, and the adjacent sets of arc extinguishing grid plates (430) are staggered.

3. The novel lightning suppression and interception device for new energy power collection lines according to claim 2, characterized in that: The cylinder (100) has a cavity (111) inside, and two conduits (110) communicating with the cavity (111) are provided on the cylinder (100). A solenoid valve (112) is provided on the outside of the conduit (110).

4. The novel lightning suppression and interception device for new energy power collection lines according to claim 3, characterized in that: The arc-extinguishing grid (430) is made of metal, and one side of the arc-extinguishing grid (430) extends into the cavity (111).

5. A novel lightning suppression and interception device for new energy power collection lines according to claim 1, characterized in that: Insulating sleeves (120) are embedded at both ends of the cylinder (100), and the lightning arrester (200) and the lightning conductor (300) are respectively connected to the central conductor (410) through the two insulating sleeves (120).

6. The lightning suppression and interception device for a novel new energy power collection line according to claim 1, characterized in that: The cylinder (100) is made of insulating material, and the spiral electrode (420) is made of chromium zirconium copper.

7. A novel lightning suppression and interception device for new energy power collection lines according to claim 2, characterized in that: The arc-extinguishing grid (430) is located below the spiral electrode (420).

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