Metallic particle capturing device and method for a direct current gas insulated transmission line

Abstract

The application discloses a metal particle capturing device and method for a direct-current gas insulated transmission pipeline, wherein the device comprises a plurality of traps for capturing metal particles, an introducer for introducing a preset single-direction distributed magnetic field in different areas inside the pipeline of the direct-current gas insulated transmission pipeline, and a controller for controlling the introducer to introduce the preset single-direction distributed magnetic field when the metal particles move, so that the metal particles are induced to move directionally away from a basin-type insulator by the magnetic field, and the metal particles fall into the plurality of traps. Thus, the technical problem of poor operation stability of the direct-current GIL due to the difficulty in particle suppression of the direct-current GIL, the difficulty in realizing particle suppression by a particle trap, and the charge accumulation phenomenon of the direct-current GIL, which increases the probability of particle-induced flashover, is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power system high-voltage transmission lines, in particular to a metal particle trapping device and method for a direct-current gas-insulated transmission pipeline. BACKGROUND

[0002] Since the 1960s and 1970s, with the development of gas insulation technology, GIL (Gas-insulated Metal Enclosed Transmission Line) has been widely used around the world and has great application prospects in the field of extra-high voltage transmission and special transmission corridors.

[0003] Although the construction of gas-insulated transmission pipelines in China started relatively late, with the development of long-distance high-capacity high-voltage transmission, the transmission corridor will inevitably pass through special terrains such as mountains and lakes, and at the same time, with the acceleration of urbanization in China, the electromagnetic radiation near the transmission corridor also needs to be strictly controlled, so the gas-insulated transmission technology in China has developed rapidly in recent years.

[0004] In GIL, metal particles are one of the main factors that cause electric field distortion and lead to insulation breakdown. Moving metal particles can cause air gap breakdown, while metal particles attached to the surface of the insulator and moving near the insulator will introduce charges to the surface of the insulator, distort the original electric field, and affect the normal operation of the GIL.

[0005] In related technologies, particle suppression in AC GIL is mainly achieved through particle traps, while the particle motion speed in DC GIL is faster and the particle distribution range is wider, greatly increasing the difficulty of particle suppression. Moreover, traditional electric field calculation cannot evaluate the trapping efficiency of particles, making the design of particle traps lack clear guidelines and optimization methods. In addition, DC GIL also involves the problem of charge accumulation, which greatly increases the difficulty of particle motion characteristics and particle-induced flashover, making it difficult for DC GIL to achieve the desired effect of particle suppression, which needs to be improved. SUMMARY

[0006] The present application provides a metal particle trapping device and method for a direct-current gas-insulated transmission pipeline to solve the technical problem that in related technologies, the particle suppression of DC GIL is difficult, it is difficult to achieve particle suppression through particle traps, and DC GIL has the phenomenon of charge accumulation, which increases the probability of particle-induced flashover, resulting in poor operation stability of DC GIL.

[0007] The first aspect of the present application provides a metal particle capturing device for a DC gas insulated transmission pipeline, comprising: a plurality of traps for capturing metal particles; an introducer for introducing a preset single direction distributed magnetic field in different regions inside the pipeline of the DC gas insulated transmission pipeline; and a controller for controlling the introducer to introduce the preset single direction distributed magnetic field when the metal particles move, inducing the metal particles to move directionally away from the basin-type insulator by the magnetic field, so that the metal particles fall into the plurality of traps.

[0008] Optionally, in an embodiment of the present application, the introducer is an electromagnet.

[0009] Optionally, in an embodiment of the present application, the introducer is a device for applying a changing magnetic field.

[0010] Optionally, in an embodiment of the present application, the direction of the magnetic field is set to correspond to the movement direction of the metal particles in the corresponding region, and the strength of the magnetic field is set to correspond to the speed of the metal particles.

[0011] Optionally, in an embodiment of the present application, each trap of the plurality of traps is arranged at a middle position of each section of the DC gas insulated transmission pipeline, so as to trap the metal particles in the middle position of two insulators by using a particle trap.

[0012] The second aspect of the present application provides a metal particle capturing method for a DC gas insulated transmission pipeline, comprising the following steps: detecting whether the metal particles move; when the metal particles are detected to move, introducing the preset single direction distributed magnetic field, inducing the metal particles to move directionally away from the basin-type insulator by the magnetic field, so that the metal particles of the DC gas insulated transmission pipeline fall into the plurality of traps.

[0013] Optionally, in an embodiment of the present application, before introducing the preset single direction distributed magnetic field, the method further comprises: setting the direction of the magnetic field to correspond to the movement direction of the metal particles in the corresponding region, and setting the strength of the magnetic field to correspond to the speed of the metal particles.

[0014] Optionally, in an embodiment of the present application, before introducing the preset single direction distributed magnetic field, the method further comprises: arranging each trap of the plurality of traps at a middle position of each section of the DC gas insulated transmission pipeline, so as to trap the metal particles in the middle position of two insulators by using a particle trap.

[0015] The third aspect of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the metal particle capturing method of the DC gas insulated transmission pipeline.

[0016] The fourth aspect of the present application provides a computer readable storage medium, which stores a computer program, and the program is executed by a processor to implement the metal particle capturing method of the DC gas insulated transmission pipeline.

[0017] The embodiments of the present application can introduce the corresponding preset single direction distributed magnetic field in different regions inside the pipeline of the DC gas insulated transmission pipeline by the introducer, and induce the directional movement of the metal particles away from the basin type insulator by the magnetic field, so that the metal particles fall into the plurality of traps, realize the particle suppression of the DC GIL, reduce the metal particles near the insulator, and avoid the contact between the particles and the high voltage conductor by the magnetic field force induction, thereby avoiding the insulator flashover caused by the back and forth movement of the particles between the conductors, and greatly improving the operation stability of the GIL. Therefore, the technical problem of the related art that the particle suppression of the DC GIL is difficult, the particle suppression cannot be realized by the particle trap, the DC GIL has the phenomenon of charge accumulation, the probability of particle induced flashover is increased, and the operation stability of the DC GIL is poor is solved.

[0018] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0020] Figure 1 A structural schematic diagram of a metal particle capturing device of a DC gas insulated transmission pipeline according to an embodiment of the present application is shown in the figure.

[0021] Figure 2 A basic force analysis schematic diagram of the metal particles without magnetic field of the metal particle capturing device of the DC gas insulated transmission pipeline according to an embodiment of the present application is shown in the figure.

[0022] Figure 3 A basic motion trajectory analysis schematic diagram of the metal particles without magnetic field of the metal particle capturing device of the DC gas insulated transmission pipeline according to an embodiment of the present application is shown in the figure.

[0023] Figure 4A sectional view of a metal particle capturing device for a DC gas insulated transmission pipe according to an embodiment of the present application;

[0024] Figure 5 A magnetic field distribution diagram of a metal particle capturing device for a DC gas insulated transmission pipe according to an embodiment of the present application;

[0025] Figure 6 A metal particle basic force analysis diagram of a metal particle capturing device for a DC gas insulated transmission pipe according to an embodiment of the present application without applying a magnetic field;

[0026] Figure 7 A single motion metal particle trajectory analysis diagram of a metal particle capturing device for a DC gas insulated transmission pipe according to an embodiment of the present application;

[0027] Figure 8 A multiple motion metal particle trajectory analysis diagram of a metal particle capturing device for a DC gas insulated transmission pipe according to an embodiment of the present application;

[0028] Figure 9 A sectional view of a metal particle capturing device for a DC gas insulated transmission pipe according to an embodiment of the present application;

[0029] Figure 10 A flow chart of a metal particle capturing method for a DC gas insulated transmission pipe according to an embodiment of the present application;

[0030] Figure 11 A structural diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below with reference to the attached drawings, which are meant to be exemplary and not limiting.

[0032] A metal particle capturing device and method for a direct-current gas insulated transmission pipeline are described below with reference to the accompanying drawings. In view of the technical problems in the background art that the particle suppression of a direct-current GIL is difficult, it is difficult to achieve particle suppression through a particle trap, and the direct-current GIL has a charge accumulation phenomenon, which increases the probability of particle-induced flashover, resulting in poor operation stability of the direct-current GIL, the present application provides a metal particle capturing device for a direct-current gas insulated transmission pipeline. In the device, a corresponding preset single-direction distributed magnetic field can be introduced into different regions inside the pipeline of the direct-current gas insulated transmission pipeline by the introducer, and the metal particles are induced to move away from the basin-shaped insulator by the magnetic field, so that the metal particles fall into the plurality of traps, the particle suppression of the direct-current GIL is achieved, thereby reducing the metal particles near the insulator. At the same time, the contact between the particles and the high-voltage conductor can be avoided by magnetic field force induction, thereby avoiding the insulation flashover caused by the back-and-forth movement of the particles between the conductors to the greatest extent, and greatly improving the operation stability of the GIL. Thus, the technical problems in the related art that the particle suppression of a direct-current GIL is difficult, it is difficult to achieve particle suppression through a particle trap, and the direct-current GIL has a charge accumulation phenomenon, which increases the probability of particle-induced flashover, resulting in poor operation stability of the direct-current GIL, are solved.

[0033] Specifically, Figure 1 A structure diagram of a metal particle capturing device for a direct-current gas insulated transmission pipeline provided by an embodiment of the present application.

[0034] As Figure 1 shown, the metal particle capturing device 10 for the direct-current gas insulated transmission pipeline includes a plurality of traps 100, an introducer 200, and a controller 300.

[0035] Specifically, the plurality of traps 100 are used to capture metal particles.

[0036] It can be understood that due to material aging, wear, and the presence of metal particles in the gas insulated pipeline, as Figure 2 shown, because the inner conductor is a high-voltage conductor and the outer shell is grounded, there is an electric field in the gas insulated pipeline, and the metal particles are affected by the electric field force and gravity.

[0037] Further, as Figure 3 shown, since the gas insulated pipeline shell is grounded and the shell is at zero potential (negative with respect to the high-voltage inner conductor), the inner conductor is positive, and due to the action of the electric field force and gravity, the metal particles will move up and down, and the metal particles will be divided according to the polarity of the charge amount:

[0038] The negative polarity metal particles move upward from the shell, collide with the inner conductor, and transfer charges. The metal particles become positive polarity and repel the positive polarity inner conductor, thereby moving toward the shell.

[0039] The positive polarity metal particles move downward from the inner conductor, collide with the shell, and transfer charges. The metal particles become negative polarity and repel the negative polarity shell, thereby moving toward the inner conductor.

[0040] Finally, the metal particles shorten the gas insulation distance between the two poles in the movement process, increasing the possibility of discharge breakdown.

[0041] Therefore, it is necessary to capture metal particles in the gas insulated pipeline by multiple traps 100 to avoid insulation flashover caused by the back-and-forth movement of particles between conductors, thereby greatly improving the stability of GIL operation.

[0042] Optionally, in an embodiment of the present application, each trap 100 of the multiple traps 100 is arranged at the middle position of each section of the DC gas insulated transmission pipeline to capture metal particles in the middle position of the two insulators by the particle trap.

[0043] In actual implementation, as shown in Figure 4 The present application can define the gas insulated transmission pipeline between two adjacent insulators as a section of GIL, and the length reference value can be 6m. The present application can place a trap 100 in the middle position of each section of GIL, which is a metal particle trap 100 used in traditional AC GIL. The principle is to form a low electric field area to capture metal particles around it.

[0044] Further, the present application can define the section of GIL where the trap 100 is located as a non-a area, and define the a area between two adjacent non-a areas, each of which contains an insulator.

[0045] The present application can arrange each trap 100 of the multiple traps 100 at the middle position of each section of the DC gas insulated transmission pipeline to capture metal particles in the middle position of the two insulators by the particle trap, thereby reducing the metal particles near the insulator.

[0046] The introducer 200 is used to introduce a corresponding preset single direction distributed magnetic field in different areas inside the pipeline of the DC gas insulated transmission pipeline.

[0047] Those skilled in the art will understand that once metal particles begin to move, in addition to being subject to their own gravity and the electric field force generated under normal operation of the transmission line, they are also subject to the Lorentz force under the influence of the magnetic field. Since the Lorentz force is perpendicular to the direction of particle movement and increases with the increase of speed, it reduces the height of the particle moving towards the high voltage conductor, causing the particle to closely adhere to the ground and make a unidirectional semi-circular motion near the grounding shell. Therefore, in this embodiment of the application, the introducer 200 can introduce corresponding preset unidirectional magnetic fields into different areas inside the DC gas-insulated transmission pipeline, thereby facilitating the capture of metal particles.

[0048] Optionally, in one embodiment of this application, the introducer 200 is an electromagnet.

[0049] In some embodiments, the introducer 200 can be an electromagnet, thereby ensuring the stability of the magnetic field introduced by the introducer 200, and thus increasing the stability of the GIL.

[0050] Optionally, in one embodiment of this application, the introducer 200 is a device that applies a changing magnetic field.

[0051] In other embodiments, the introducer 200 may also be a device that applies a changing magnetic field, thereby introducing a corresponding preset unidirectional magnetic field in different regions inside the pipe, and inducing metal particles through magnetic force to achieve capture.

[0052] Optionally, in one embodiment of this application, the direction of the magnetic field is set to correspond to the direction of motion of the metal particles in the corresponding region, and the strength of the magnetic field is set to correspond to the velocity of the metal particles.

[0053] Specifically, such as Figure 5 As shown, in this embodiment of the application, a magnetic field perpendicular to the paper and pointing outwards can be applied to the part of the insulator projected onto the shell (extending to the right edge of region a) on the side of the insulator closest to the shell; conversely, in this embodiment of the application, a magnetic field perpendicular to the paper and pointing inwards can be applied to the part of the insulator projected onto the inner conductor (extending to the left edge of region a) on the side of the insulator closest to the inner conductor (extending to the left edge of region a).

[0054] Furthermore, such as Figure 6 As shown, taking a negatively polarized metal particle moving upward as an example, it is subjected to a downward gravitational force and an electric field force pointing towards the inner conductor. By using the right-hand rule, it can be determined that the metal particle is subjected to a Lorentz magnetic force away from the insulator.

[0055] The controller 300 is used to control the introducer 200 to introduce a preset unidirectional magnetic field when the metal particles are moving. The magnetic field induces the metal particles to move away from the basin insulator in a directional manner, so that the metal particles fall into multiple traps 100.

[0056] In actual implementation, take an example of negatively polar metal particles moving upwards:

[0057] 1) One exercise

[0058] like Figure 7 As shown, the controller 300 can control the introducer 200 to introduce a preset unidirectional magnetic field. The metal particles start from the shell, have negative polarity, and move upward. Due to the action of electric field force, gravity, and Lorentz force, they move away from the insulator and eventually fall into the metal particle trap (non-A region).

[0059] It is important to note that during the motion, because the upward acceleration of the particles is very small, the metal particles cannot possibly come into contact with the high-voltage conductor. As can be seen from the formula F = QvB, the greater the speed, the stronger the magnetic force, and the greater the probability that the particles will move downwards.

[0060] Therefore, the particles would originally accelerate towards the high-voltage conductor. After the magnetic field is applied, the particles can only move in an approximately semi-circular horizontal direction close to the electrode surface and gradually fly towards the trap 100.

[0061] 2) Multiple exercises

[0062] like Figure 8 As shown, the controller 300 can control the introducer 200 to introduce a preset magnetic field with a single direction distribution. The metal particles start from the shell, have negative polarity, and move upward. Because the acceleration of the particles moving upward is very small, and the Lorentz magnetic force perpendicular to the direction of particle movement and away from the insulator is constantly increasing, the upward velocity component of the particles decreases to 0 during the upward movement, and the particles move downward due to gravity.

[0063] If the particle velocity is low at this time, it will stop in the particle trap region as mentioned above;

[0064] If the particle velocity is high at this time, the metal particle passes through the metal particle trap (non-region a) and collides with the outer shell in region a of another insulator. Due to the Lorentz force, the metal particle moves away from the insulator again until it falls completely into the trap.

[0065] To sum up, the embodiment of the application can adopt an externally applied magnetic field to actively intervene in the motion trajectory of the microparticles, and the microparticles can only make an approximately semicircular motion in the horizontal direction close to the surface of the electrode and gradually fly to the catcher 100. In the case of normal operation of the DC gas insulated transmission pipeline, the metal microparticles are captured, and the damage of the metal microparticles to the insulation is avoided. Compared with the related art, no new electric field is added, only the original DC electric field of the DC gas insulated transmission pipeline is considered, the design of the entire microparticle trap is greatly simplified, and the working efficiency is improved.

[0066] In combination Figures 2 to 9 with FIG. 1, the working principle of the metal microparticle capturing device 10 of the DC gas insulated transmission pipeline in the embodiment of the application is described in detail in an embodiment.

[0067] As Figure 9 shown in FIG. 2, which is a cross-sectional view of the embodiment of the application, under the condition that the metal microparticles and the central conductor have the same polarity and the charge amount remains unchanged, the metal microparticles are caused to move away from the basin-shaped insulator by an externally applied magnetic field, and finally the microparticles are captured in the middle position between the two insulators by the microparticle trap, i.e., the catcher 100.

[0068] In the actual implementation process, the working principle of the embodiment of the application can be described by analyzing the force and motion trajectory of the metal microparticles.

[0069] 1) Basic force analysis of metal microparticles (no magnetic field applied)

[0070] Due to material aging, wear, and the presence of metal microparticles in the gas insulated pipeline, as Figure 2 shown in FIG. 3, because the inner conductor is a high-voltage conductor and the outer shell is grounded, an electric field exists in the gas insulated pipeline, and the metal microparticles are subjected to the action of the electric field force and gravity.

[0071] 2) Basic motion trajectory analysis of metal microparticles (no magnetic field applied)

[0072] As Figure 3 shown in FIG. 4, because the outer shell of the gas insulated pipeline is grounded and the outer shell is taken as zero potential (relative to the negative polarity of the high-voltage inner conductor), the inner conductor is positive, and the metal microparticles move up and down due to the action of the electric field force and gravity. According to the polarity of the charge amount, the metal microparticles are divided into:

[0073] The negative polarity metal microparticles start from the outer shell, move upward, collide with the inner conductor, and undergo charge transfer, so that the metal microparticles become positive polarity and repel the positive polarity inner conductor, thereby moving in the direction of the outer shell.

[0074] The positive polarity metal microparticles start from the inner conductor, move downward, collide with the outer shell, undergo charge transfer, so that the metal microparticles become negative polarity and repel the negative polarity outer shell, thereby moving in the direction of the inner conductor.

[0075] Finally, the metal particles shorten the gas insulation distance between the two poles during the movement, increasing the possibility of discharge breakdown.

[0076] 3) Apply a magnetic field

[0077] As Figure 4 shown, the embodiments of the present application can define the gas insulation power pipeline between two adjacent insulators as a section of GIL, and the length reference value can be 6m. The embodiments of the present application can place the catcher 100 in the middle position of each section of GIL, that is, the metal particle catcher 100 used in the traditional alternating current GIL, the principle of which is to form a low electric field area to capture the metal particles around it.

[0078] Further, the embodiments of the present application can define the section of GIL where the catcher 100 is located as a non-a area; define the area between two adjacent non-a areas as an a area, and each a area contains an insulator.

[0079] Specifically, as Figure 5 shown, the embodiments of the present application can apply a magnetic field perpendicular to the paper surface and outward on the side of the insulator close to the shell (extending to the right edge of the a area), and the part of the insulator projected on the shell (extending to the right edge of the a area); on the contrary, the embodiments of the present application can apply a magnetic field perpendicular to the paper surface and inward on the side of the insulator close to the inner conductor (extending to the left edge of the a area), and the part of the insulator projected on the inner conductor (extending to the left edge of the a area).

[0080] 4) Analysis of the force on the metal particles (application of a magnetic field)

[0081] Further, as Figure 6 shown, taking a metal particle with negative polarity moving upward as an example, it is subjected to a downward gravity and an electric field force pointing to the inner conductor. By the right-hand rule, it can be determined that the metal particle is subjected to a Lorentz magnetic force away from the insulator.

[0082] 5) Analysis of the trajectory of the metal particles (application of a magnetic field)

[0083] In actual execution, taking a metal particle with negative polarity moving upward as an example:

[0084] a) Primary motion

[0085] As Figure 7 shown, the metal particle takes the shell as the starting point, has negative polarity, and moves upward. Because of the action of the electric field force, gravity, and Lorentz magnetic force, it constantly moves away from the insulator, and finally falls into the metal particle trap (non-a area).

[0086] It should be noted that, during the movement, the metal particles cannot collide with the high-voltage conductor because the acceleration of the particles upward is very small. As can be seen from the formula F = QvB, the greater the velocity, the greater the magnetic field force, and the greater the possibility of the particles downward.

[0087] Therefore, the original particles gradually accelerate to move to the high-voltage conductor, and after the magnetic field, the particles can only move in a horizontal direction on the surface of the electrode to form an approximate semicircle, and gradually fly to the catcher 100.

[0088] b) Multiple movements

[0089] As shown in Figure 8 , the metal particles start from the shell, have a negative polarity, and move upward. Because the acceleration of the particles upward is very small, and the Lorentz magnetic force perpendicular to the direction of the particle movement and away from the insulator direction increases, the upward velocity component of the particles decreases to 0 during the upward movement. The particles move downward due to gravity. If the velocity of the particles is small at this time, the particles will stop in the particle trap area as described above.

[0090] If the velocity of the particles is large at this time, the metal particles pass through the metal particle trap (non-a area) and collide with the shell in the a area of another insulator. Due to the Lorentz magnetic force, the metal particles move away from the insulator again until they fall into the trap.

[0091] The metal particle trapping device of the direct-current gas insulated transmission pipeline according to the embodiments of the present application can introduce a corresponding preset single direction distributed magnetic field in different areas inside the pipeline of the direct-current gas insulated transmission pipeline by using the introducer, and induce the metal particles to move away from the basin-shaped insulator by the magnetic field, so that the metal particles fall into the multiple catchers, realize the particle suppression of the direct-current GIL, reduce the metal particles near the insulator, avoid the contact between the particles and the high-voltage conductor by the magnetic field force induction, and further avoid the insulator flashover caused by the back-and-forth movement of the particles between the conductors, thereby greatly improving the operation stability of the GIL. Thus, the technical problem of the related art that the particle suppression of the direct-current GIL is difficult, the particle suppression cannot be realized by the particle trap, and the direct-current GIL has the phenomenon of charge accumulation, which increases the probability of particle-induced flashover and leads to poor operation stability of the direct-current GIL is solved.

[0092] Secondly, the metal particle trapping method of the direct-current gas insulated transmission pipeline according to the embodiments of the present application is described with reference to the accompanying drawings.

[0093] Figure 10 is a flowchart of the metal particle trapping method of the direct-current gas insulated transmission pipeline according to the embodiments of the present application.

[0094] As shown in Figure 10As shown, the metal particle capturing method of the direct-current gas insulated transmission pipeline comprises the following steps:

[0095] In step S1001, whether the metal particles move is detected.

[0096] In step S1002, when the movement of the metal particles is detected, a preset single-direction distributed magnetic field is introduced, the metal particles are induced to move away from the basin-type insulator by the magnetic field, and the metal particles of the direct-current gas insulated transmission pipeline fall into the plurality of traps.

[0097] Optionally, in an embodiment of the present application, before the preset single-direction distributed magnetic field is introduced, the method further comprises: setting the direction of the magnetic field to correspond to the movement direction of the metal particles in the corresponding area, and setting the intensity of the magnetic field to correspond to the speed of the metal particles.

[0098] Optionally, in an embodiment of the present application, before the preset single-direction distributed magnetic field is introduced, the method further comprises: setting each trap of the plurality of traps at the middle position of each section of the direct-current gas insulated transmission pipeline, so as to capture the metal particles in the middle position of the two insulators by the particle trap.

[0099] It should be noted that the foregoing explanation and description of the embodiment of the metal particle capturing device of the direct-current gas insulated transmission pipeline also applies to the metal particle capturing method of the direct-current gas insulated transmission pipeline of the embodiment, which will not be described here again.

[0100] According to the metal particle capturing method of the direct-current gas insulated transmission pipeline provided by the embodiment of the present application, the introducer can introduce corresponding preset single-direction distributed magnetic fields in different areas inside the pipeline of the direct-current gas insulated transmission pipeline, and the metal particles are induced to move away from the basin-type insulator by the magnetic field, so that the metal particles fall into the plurality of traps, the particle suppression of the direct-current GIL is realized, the metal particles near the insulator are reduced, the contact between the particles and the high-voltage conductor is avoided by the magnetic field force induction, the insulator flashover caused by the particles moving back and forth between the conductors is avoided to the greatest extent, and the operation stability of the GIL is greatly improved. Therefore, the technical problem of the related art that the particle suppression of the direct-current GIL is difficult, the particle suppression cannot be realized by the particle trap, the charge accumulation phenomenon exists in the direct-current GIL, the probability of the particle-induced flashover is increased, and the operation stability of the direct-current GIL is poor is solved.

[0101] Figure 11 The structure schematic diagram of the electronic device provided by the embodiment of the present application is shown. The electronic device can include:

[0102] The memory 1101, the processor 1102, and the computer program stored in the memory 1101 and executable on the processor 1102.

[0103] The processor 1102 implements the metal particle capturing method of the direct current gas insulated power transmission pipeline provided in the above embodiments when executing a program.

[0104] Further, the electronic device further comprises:

[0105] The communication interface 1103 is configured to communicate between the memory 1101 and the processor 1102.

[0106] The memory 1101 is configured to store a computer program executable on the processor 1102.

[0107] The memory 1101 can include a high-speed RAM memory, and can also include a non-volatile memory, for example, at least one disk memory.

[0108] If the memory 1101, the processor 1102 and the communication interface 1103 are independently implemented, the communication interface 1103, the memory 1101 and the processor 1102 can be connected to each other through a bus and complete communication between each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 11 In the figure, only one thick line is used to represent, but it does not mean that there is only one bus or one type of bus.

[0109] Optionally, in a specific implementation, if the memory 1101, the processor 1102 and the communication interface 1103 are integrated on a chip, the memory 1101, the processor 1102 and the communication interface 1103 can complete communication between each other through an internal interface.

[0110] The processor 1102 can be a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or one or more integrated circuits configured to implement one or more embodiments of the present application.

[0111] The embodiment also provides a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the metal particle capturing method of the DC gas insulated power transmission pipeline.

[0112] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or N embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0113] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "N" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0114] Any process or method descriptions in flow charts or described elsewhere herein can be understood as representing code modules, segments, or portions of code which include one or more executable instructions for performing a step of a process described in connection with that code module, segment, or portion of code. The various embodiments of the preferred implementation of the present application can also include code or machine readable media for carrying or having machine readable instructions for carrying out any of the methods or flow charts described herein or otherwise contemplated by the present application when those methods or flow charts are performed by a machine or machines.

[0115] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0116] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0117] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0118] In addition, each of the functional units in the various embodiments of the present application can be integrated in one processing module, or each of the units can be physically present separately, or two or more units can be integrated in one module. The integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0119] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A metal particle capture system for a DC gas-insulated power transmission pipeline, characterized in that, include: Multiple traps are used to capture metal particles; An introducer is used to introduce a pre-defined, unidirectionally distributed magnetic field into different regions inside a DC gas-insulated power transmission pipeline; and The controller is used to control the introducer to introduce the preset unidirectional magnetic field when the metal particles are moving, so as to induce the metal particles to move away from the basin insulator through the magnetic field and cause the metal particles to fall into the multiple traps. On the side of the insulator closest to the outer shell, where the insulator is projected onto the outer shell, a first magnetic field perpendicular to the axial direction of the DC gas-insulated transmission pipeline is applied. On the side of the insulator closest to the inner conductor, where the insulator is projected onto the inner conductor, a second magnetic field opposite in direction to the first magnetic field is applied.

2. The system according to claim 1, characterized in that, The introducer is an electromagnet.

3. The system according to claim 1, characterized in that, The introducer is a device that applies a changing magnetic field.

4. The system according to claim 1, characterized in that, The direction of the magnetic field is set to correspond to the direction of motion of the metal particles in the corresponding region, and the strength of the magnetic field is set to correspond to the velocity of the metal particles.

5. The system according to claim 1, characterized in that, Each of the plurality of traps is positioned at the midpoint of each section of the DC gas-insulated transmission pipeline to trap the metal particles at the midpoint between two insulators using a particle trap.

6. A method for capturing metal particles in a DC gas-insulated power transmission pipeline, characterized in that, A metal particle capture system for DC gas-insulated power transmission pipelines as described in any one of claims 1-5, wherein the method comprises the following steps: Detect whether the metal particles are moving; When the movement of the metal particles is detected, a preset unidirectional magnetic field is introduced. The magnetic field induces the metal particles to move away from the basin insulator, causing the metal particles of the DC gas-insulated transmission pipeline to fall into the multiple traps.

7. The method according to claim 6, characterized in that, Before introducing the preset unidirectional magnetic field, the method further includes: The direction of the magnetic field is set to correspond to the direction of motion of the metal particles in the corresponding region, and the strength of the magnetic field is set to correspond to the velocity of the metal particles.

8. The method according to claim 6, characterized in that, Before introducing the preset unidirectional magnetic field, the method further includes: Each of the plurality of traps is positioned at the midpoint of each section of the DC gas-insulated transmission pipeline to trap the metal particles at the midpoint between two insulators using a particle trap.

9. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the method for capturing metal particles in a DC gas-insulated transmission pipeline as described in any one of claims 6-8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by a processor to implement the method for capturing metal particles in a DC gas-insulated transmission pipeline as described in any one of claims 6-8.

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