CN115718053B - Particle discharge experiment platform foreign matter release device and GIL test system - Google Patents
Particle discharge experiment platform foreign matter release device and GIL test system Download PDFInfo
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- CN115718053B CN115718053B CN202211450002.1A CN202211450002A CN115718053B CN 115718053 B CN115718053 B CN 115718053B CN 202211450002 A CN202211450002 A CN 202211450002A CN 115718053 B CN115718053 B CN 115718053B
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Abstract
The invention provides a particle discharge experiment platform foreign matter release device and a GIL test system, which comprises a GIL device, an opening and closing device and an electromagnetic part, wherein the opening and closing device is arranged at the top of the inner side of the GIL device, the electromagnetic part is arranged at the top of the outer side of the GIL device, and the electromagnetic part is positioned above the opening and closing device, so that the opening and closing device releases metal particles through the electromagnetic part, an external power supply of the electromagnetic part is electrically connected, the electromagnetic part is in signal connection with a remote control device, the opening and closing device comprises a first rotating plate, a second rotating plate and a rotating shaft, the first rotating plate is in rotating connection with the second rotating plate through the rotating shaft, the first rotating plate is connected with the top of the inner side wall of a pressure-resistant cylindrical cavity, and the metal particles are used for being placed on the second rotating plate, so that the running state of the particles near a basin-shaped insulator is not easy to see when the existing GIL device works, and the problem that the insulation performance and the safety and stability performance of the GIL system are reduced is caused.
Description
Technical Field
The invention belongs to the technical field of high-voltage transmission lines and insulation, and particularly relates to a particle discharge experiment platform foreign matter release device and a GIL (gas insulated switchgear) experiment system.
Background
The gas-insulated metal-enclosed transmission line is high-voltage, high-current and long-distance power transmission equipment with a shell and conductors coaxially arranged, SF6, CF4 and N2 with high air pressure or mixed cleaning gas is often adopted as an insulating medium in a cavity, and the gas-insulated metal-enclosed transmission line can be used as the supplement of overhead transmission and cable transmission. The method has the advantages of large transmission capacity, small loss, no electromagnetic interference, high reliability and the like, and is widely used.
In the current practical application process of GIL, there are some issues to be solved, in which the reduction of the insulation strength of GIL caused by particulate foreign matters is a main factor affecting the safe and stable operation of the system. During production, transportation, assembly and operation of GIL, particulate foreign matter is inevitably generated due to imperfect cleaning equipment, extrusion or friction of the equipment, etc.; at the same time, spark discharge that may exist during long-term operation may further ablate GIL components and may also generate some particulate foreign matter. According to the related information, it is known that these metal particulate materials are mainly aluminum, iron and stainless steel, and are mostly linear, spherical and powdery, and the size is generally small, and is mostly in millimeter scale.
At present, the GIL can cause particles to be charged and move under the action of an electric field due to the application of high voltage by an external device, so that the safe and stable operation of the system is affected. When the existing GIL device works, the metal particles are placed at one position, so that the running state of the particles near the basin-type and post insulators is not easy to see, and the research on the insulation performance and the safety and stability performance of the GIL system is influenced.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the particle discharge experiment platform foreign matter release device and the GIL test system, which can solve the problems that when the conventional GIL device works, metal particles are placed at one position, the running state of the particles near the basin-type and pillar insulators is not easy to see, and the research on the insulation performance and the safety and stability performance of the GIL system is influenced.
In order to solve the problems, the invention provides a particle discharge experiment platform foreign body release device, which comprises a GIL device, an opening and closing device and an electromagnetic member;
the opening and closing device is arranged at the top of the inner side of the GIL device, the electromagnetic piece is arranged at the top of the outer side of the GIL device, and the electromagnetic piece is arranged above the opening and closing device, so that the opening and closing device releases metal particles through the electromagnetic piece, the electromagnetic piece is electrically connected with an external power supply, and the electromagnetic piece is in signal connection with the remote control device.
Optionally, the opening and closing device comprises a first rotating plate, a second rotating plate and a rotating shaft, wherein the first rotating plate and the second rotating plate are rotationally connected through the rotating shaft, the first rotating plate is connected with the top of the inner side wall of the pressure-resistant cylindrical cavity, and the metal particles are used for being placed on the second rotating plate.
Optionally, the GIL device includes shell, conductive structure and gas device, and conductive structure sets up in the shell, and conductive structure's one end stretches out the outside of shell for connect voltage, gas device sets up in the outside upper end of shell for set up the atmospheric pressure of shell inner chamber.
Optionally, the shell includes withstand voltage cylinder cavity and insulating cover plate, and the both ends of withstand voltage cylinder cavity all set up insulating cover plate, and conductive structure sets up in withstand voltage cylinder cavity inner chamber, and conductive structure's one end stretches out the outside of one side insulating cover plate for the connection voltage.
Optionally, the conductive structure comprises a conductive rod structure and an insulating structure, the conductive rod structure is arranged in the inner cavity of the pressure-resistant cylindrical cavity, one end of the conductive rod structure extends out of the inner cavity of the pressure-resistant cylindrical cavity, and one end of the conductive structure, which is positioned at the outer side of the pressure-resistant cylindrical cavity, is connected with the insulating structure.
Optionally, the conducting rod structure includes guide arm main part and guide arm head, and insulation system includes epoxy sleeve and ya keli sleeve, and the guide arm main part includes first section and second section, and wherein, the second section of guide arm main part sets up in withstand voltage cylinder cavity, and insulating apron is passed to the first section of guide arm main part, and the first section sets up in withstand voltage cylinder cavity's outside, and the guide arm head is connected to the one end of first section, sets up epoxy sleeve in the first section of guide arm main part, and epoxy sleeve's surface is provided with ya keli sleeve, and wherein, epoxy sleeve is connected with insulating apron that the guide arm main part passed.
Optionally, the pressure-resistant cylindrical cavity is provided with a conductive film.
Optionally, the gas device comprises an inflation valve and a barometer, the inflation valve is connected with the pressure-resistant cylindrical cavity, the inflation valve is communicated with the inner cavity of the pressure-resistant cylindrical cavity, and the barometer is arranged on the inflation valve.
Optionally, the release device further comprises an insulator, the insulator is located in the inner cavity of the pressure-resistant cylindrical cavity, the insulator is sleeved on the outer surface of the guide rod main body, and the insulator is connected with the inner side wall of the pressure-resistant cylindrical cavity.
The invention further provides a GIL test system, which comprises the particle discharge test platform foreign matter release device.
Advantageous effects
According to the particle discharge experiment platform foreign matter release device and the GIL experiment system provided by the embodiment of the invention, the whole experiment process is carried out in a sealed pressure-resistant cylindrical cavity, the electrodes are coaxial cylindrical electrodes, a guide rod main body is supported in the pressure-resistant cylindrical cavity through insulation and is connected with the pressure-resistant cylindrical cavity at the inner wall of the pressure-resistant cylindrical cavity, and a metal cover plate at the other end (the right end) is connected with the pressure-resistant cylindrical cavity to serve as a ground electrode, so that the conductive characteristics of the GIL and GIS bus metal shells are simulated. In practice, however, under voltage operating conditions, some random factor, such as vibration, etc., causes the release device to generate foreign matter at certain locations during operation, and the foreign matter then begins to move. The release device can bear high air pressure to a certain extent while ensuring good air tightness of the pressure-proof cylindrical cavity, one end of the metal electromagnetic opening and closing device is fixed on the pressure-proof cylindrical cavity, particles are placed in the metal electromagnetic opening and closing device, the other end of the metal electromagnetic opening and closing device is sucked by utilizing a small electromagnet, and the opening and closing of the other end of the metal electromagnetic opening and closing device are controlled by an external remote control device, so that the metal foreign particles naturally fall when the metal electromagnetic opening and closing device is opened, and the instant situation of generating the particles by GIL or GIS equipment is simulated. The experimental facility can better observe the influence of particle foreign matters on GIL or GIS equipment, and solves the problems that when the existing GIL device works, metal particles are placed at one position, the running states of the particles near basin-type insulators and post insulators are not easy to see, and the research on the insulation performance and the safety and stability performance of a GIL system is influenced.
The invention has the advantages that:
1. the foreign matter release device is provided with a small electromagnetic opening and closing device, is simple in structure and convenient to install, can be suitable for GIL models with different proportions and sizes, and can release metal particles at different positions through the opening and closing device, so that the research on the insulativity of a GIL system and the research on the safety and stability performance are improved.
2. The electromagnetic opening and closing device simulates a state process that metal particles fall from the cavity, and corresponds to an important process that the metal particles are generated and fall when the GIL operates, so that the device simulates the whole process from generation to final movement ending of the metal particles, is convenient for observing release at different positions, and reduces the difficulty of researching the GIL system.
3. The electromagnetic opening and closing device can change the installation position at will, can simulate different motion states and motion results of metal particles at different distances from the insulator and at different heights from the bottom of the cavity, is convenient to observe and release at different positions, and is convenient to use and simple in structure.
Drawings
FIG. 1 is a schematic diagram showing a schematic cross-sectional front view of a foreign matter release device for a particle discharge experiment platform according to an embodiment of the present invention;
fig. 2 is a schematic structural view of an open state of an opening and closing device according to an embodiment of the present invention;
FIG. 3 is a schematic view illustrating a closed state of an opening and closing device according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method of operation of an embodiment of the present invention;
fig. 5 is a schematic top view of a particle discharge experiment platform foreign matter release apparatus according to an embodiment of the invention.
The reference numerals are expressed as:
1. a pressure-resistant cylindrical cavity; 2. an insulating cover plate; 3. a guide rod main body; 4. a guide rod head; 5. an epoxy sleeve; 6. an acrylic sleeve; 7. a gas device; 70. an inflation valve; 71. an air pressure gauge; 8. an opening and closing device; 80. a first rotating plate; 81. a second rotating plate; 82. a rotating shaft; 9. an electromagnetic member; 10. an insulator.
Detailed Description
Referring to fig. 1 to 5, according to an embodiment of the present invention, a particle discharge experiment platform foreign matter release device is shown, please refer to fig. 1, the release device includes a GIL device, an opening and closing device 8 and an electromagnetic member 9, the GIL device includes a housing, a conductive structure, a gas device 7 and an insulator 10, the housing includes a pressure-resistant cylindrical cavity 1 and an insulating cover plate 2, the conductive rod structure includes a guide rod main body 3 and a guide rod head 4, the insulating structure includes an epoxy sleeve 5 acrylic sleeves 6, the gas device 7 includes an inflation valve 70 and an air pressure gauge 71, both ends of the pressure-resistant cylindrical cavity 1 are respectively provided with an insulating cover plate 2, the guide rod main body 3 includes a first section and a second section, wherein the second section of the guide rod main body 3 is arranged in the pressure-resistant cylindrical cavity 1, the first section of the guide rod main body 3 passes through the insulating cover plate 2, the first section is arranged at the outer side of the pressure-resistant cylindrical cavity 1, one end of the first section is connected with the guide rod main body 3, an epoxy sleeve 5 is arranged on the first section, the outer surface of the epoxy sleeve 5 is provided with an acrylic sleeve 6, the outer surface of the epoxy sleeve 5 is connected with the main body 3 by passing through the insulating cover plate 2, the air valve 70 and the air pressure gauge 71, both ends of the two sections are respectively provided with the insulating cover plates are respectively, the first section and the electromagnetic member 9 is arranged on the top of the pressure-resistant cylindrical cavity 1 and the electromagnetic member is electrically connected with the electromagnetic member 9, the electromagnetic member is electrically connected with the pressure-resistant cylindrical cavity 9, the electromagnetic member is arranged on the top and the top part 9, which is electrically connected with the pressure-resistant cylindrical device is electrically-resistant cylindrical cavity 9, and the top is provided with the electromagnetic member 9, and the electromagnetic member 9 is electrically has the top and the electromagnetic device is provided with the top and the top is electrically-resistant device is electrically has and the top and has the device 9. The guide rod head 4 is electrically connected with an external adjustable high-voltage power supply, and the electromagnetic piece 9 is in signal connection with a remote control device. According to the invention, through the guide rod main body 3 arranged in the inner cavity of the pressure-resistant cylindrical cavity 1, namely, the guide wire characteristic of the GIL is formed, the metal particles are placed on the opening and closing device 8, the guide rod main body 3 is connected through the guide rod head 4, the electromagnetic member 9 is electrified, the metal particles are adsorbed, after the electromagnetic member 9 is powered off, the metal particles are controlled to fall, the phenomenon that the GIL generates the metal particles to instantaneously move is simulated, the influence of the metal particles on GIL equipment is conveniently observed, meanwhile, the metal particles can be released at different positions, the difficulty of researching a GIL system is further reduced, the weak insulation of insulators caused by the movement of the metal particles is avoided, the operation of the metal particles is effectively inhibited, and the safe and stable operation performance of the GIL is further improved.
Further, the pressure-resistant cylindrical cavity 1 is a pressure-resistant cavity with tightness, wherein two ends are sealed through the insulating cover plate 2, a groove is formed in the insulating cover plate 2, and a sealing strip is arranged in the groove, so that the tightness between the insulating cover plate 2 and the pressure-resistant cylindrical cavity 1 is improved.
Further, the insulating cover plate 2 is connected with the pressure-resistant cylindrical cavity 1 through screws, so that the connection is convenient and the disassembly is convenient.
Further, the first section of the guide rod main body 3 is located at the outer side of the pressure-resistant cylindrical cavity 1, one end of the first section, which is far away from the insulating cover plate 2, is connected with the guide rod head 4 through threads, and the guide rod head 4 is connected with an adjustable high-voltage power supply to provide voltage for the guide rod main body 3. Wherein, threaded connection epoxy sleeve 5 on the first section, the surface threaded connection acrylic sleeve 6 of epoxy sleeve 5, the effect of epoxy sleeve 5 is to guarantee that guide arm main part 3 can not creepage on the insulating apron 2 of left end, ensures the security.
Further, the insulator 10 is located in the inner cavity of the pressure-resistant cylindrical cavity 1, the insulator 10 is sleeved on the outer surface of the guide rod main body 3, the insulator 10 is connected with the inner side wall of the pressure-resistant cylindrical cavity 1, and the insulator 10 is a basin-shaped insulator 10, namely, is sleeved on the guide rod main body 3 and supports the guide rod main body 3.
Further, the pressure-resistant cylindrical cavity 1 is internally provided with the conductive film, so that the pressure-resistant cylindrical cavity 1 belongs to an actual GIL cavity, and the accuracy of the test is improved.
Further, the guide rod main body 3 is a high-voltage guide rod main body, the guide rod head 4 is a high-voltage guide rod head, and the guide rod head 4 is connected with an adjustable high-voltage power supply, wherein the voltage type that can pass through: the voltage of the direct current, alternating current and impulse voltage is controlled by adjusting the adjustable voltage power supply.
Further, the opening and closing device 8 is fixed in the inner cavity of the pressure-resistant cylindrical cavity 1, the electromagnetic piece 9 is fixed on the outer side of the pressure-resistant cylindrical cavity 1 and is located above the opening and closing device 8, and the opening and closing of the opening and closing device 8 is controlled through the electromagnetic piece 9, when the electromagnetic piece 9 is electrified, namely when magnetism exists, namely the opening and closing device 8 is in a closed state, when the electromagnetic piece 9 is powered off, namely demagnetized, namely the opening and closing device 8 is in an open state, namely the metal particles located on the opening and closing device 8 freely fall, so that the observation on the motion state of the metal particles is realized, and the influence of the metal particles on the GIL is conveniently studied.
Referring to fig. 2 and 3, the opening and closing device 8 includes a first rotating plate 80, a second rotating plate 81 and a rotating shaft 82, the first rotating plate 80 and the second rotating plate 81 are rotationally connected through the rotating shaft 82, wherein the first rotating plate 80 is connected with the top of the inner sidewall of the pressure-resistant cylindrical cavity 1, metal particles are placed on the second rotating plate 81, the electromagnetic member 9 is located above the first rotating plate 80 and the rotating shaft 80, the first rotating plate 80 is fixed, and the second rotating plate 81 rotates along the rotating shaft 82, so that release of the metal particles is achieved. Namely, the opening and closing device 8 and the pressure-resistant cylindrical cavity 1 are fixedly connected according to a preset position, and the electromagnetic member 9 is placed at a position corresponding to the opening and closing device 8.
Further, the electromagnetic piece 9 is in signal connection with the remote control device, a power switch of the electromagnetic piece 9 is controlled by the remote control device, whether the electromagnetic piece 9 is electrified or not can be remotely controlled, electromagnetism is generated during electrification, the electromagnetism disappears during outage, and further the opening and closing of the opening and closing device 8 are controlled, so that danger caused by a close-range contact test device is avoided.
Further, the specific shape of the first rotating plate 80 and the second rotating plate 81 is a square rotating plate, the first rotating plate 80 and the second rotating plate 81 are movably connected, that is, are connected through a rotating shaft 82, please refer to fig. 2, the second rotating plate 81 moves along the rotating shaft 82 relative to the first rotating plate 80, when the electromagnetic member 9 is powered off, that is, the electromagnetic member 9 is electromagnetically disappeared, and the second rotating plate 81 rotates downward along the rotating shaft 82 by gravity, that is, the metal particles placed on the second rotating plate 81 are released.
Further, the first rotating plate 80 is connected with the inner side wall of the pressure-resistant cylindrical cavity 1 through screws, so that the disassembly and the installation are convenient, meanwhile, according to the requirement of test conditions, the released position can be replaced, the release at different positions can be conveniently observed, and the research difficulty of a GIL system is reduced.
Further, the first rotating plate 80 is located at the release position, that is, the electromagnetic member 9 is also located at the release position of the first rotating plate 80, and when the electromagnetic member 9 has magnetism, please refer to fig. 3, the first rotating plate 80 and the second rotating plate 81 are attracted to each other. The simulation of the situation when the metal particle foreign matter is generated is facilitated, and the metal particle foreign matter can be placed in a plurality of positions or in different positions according to experimental requirements.
Further, the metal particles are non-magnetic metal particles.
As another embodiment, the opening and closing device 8 further includes a first rotating plate 80, a second rotating plate 81, a first fixing member, a second fixing member and an elastic member, where the first fixing member is fixedly installed on the first rotating plate 80, the second fixing member is fixedly installed on the second rotating plate 81, one end of the elastic member is connected with the first fixing member, and the other end of the elastic member is connected with the second fixing member, that is, the second rotating plate 81 is opened and closed under the action of the elastic member, and meanwhile, the second rotating plate 81 and the first rotating plate 80 are mutually attracted by the electromagnetic member 9.
Further, the elastic element is a spring.
The gas device 7 comprises an inflation valve 70 and a barometer 71, the inflation valve 70 is connected with the pressure-resistant cylindrical cavity 1, the inflation valve 70 is communicated with the inner cavity of the pressure-resistant cylindrical cavity 1, and the barometer 71 is arranged on the inflation valve 70. The air inside the pressure-resistant cylindrical cavity 1 is conveniently discharged through the air charging valve 70, insulating gas is conveniently charged into the pressure-resistant cylindrical cavity 1, when the air charging valve 70 is opened and connected with the insulating gas tank, the insulating gas is charged into the pressure-resistant cylindrical cavity 1, and when the air charging valve 70 is opened, the internal air is discharged to the outside through the air charging valve 70, so that the pressure-resistant cylindrical cavity is convenient to use and operate.
Further, the types of the air charge valve 70 and the air pressure gauge 71 are selected according to actual use. The inflation valve 70 is connected with the air pressure gauge 71 through threads, and the inflation valve 70 is communicated with the pressure-resistant cylindrical cavity 1 through threads. The air valve 70 can be connected with an external device according to the experiment requirement to vacuumize and charge and discharge insulating gas. Wherein the indication of the air pressure can be observed in real time by the air pressure gauge 71.
The whole test process of the invention is carried out in a sealed pressure-resistant cylindrical cavity 1, a guide rod main body 3 in the pressure-resistant cylindrical cavity 1 is supported by an insulator 10, a guide rod head 4 is used as an electrode on the inner wall of the pressure-resistant cylindrical cavity 1, the pressure-resistant cylindrical cavity 1 is connected as a ground electrode, and further the conductive characteristics of a GIL and GIS bus metal shell are simulated, and particles in the pressure-resistant cylindrical cavity 1 are discharged because the movement of metal particles is studied at the present stage, the particles are fixed at a certain position or the particles are put in advance, and then the guide rod main body 3 is pressurized, so that the movement of the metal particles is studied. In practice, however, under voltage operating conditions, some random factor, such as vibration, etc., causes the release device to generate foreign matter at certain locations during operation, and the foreign matter then begins to move. The release device can bear high air pressure to a certain extent while ensuring good air tightness of the pressure-proof cylindrical cavity 1, one end of the metal electromagnetic opening and closing device 8 is fixed on the pressure-proof cylindrical cavity 1, particles are placed in the metal electromagnetic opening and closing device 8, the other end of the metal electromagnetic opening and closing device 8 is sucked by utilizing the small electromagnetic piece 9, and the opening and closing of the other end of the metal electromagnetic opening and closing device 8 are controlled by an external remote control device, so that the metal foreign particles naturally fall when the metal electromagnetic opening and closing device is opened, and the instant situation of generating the particle foreign particles by GIL or GIS equipment is simulated. The experimental staff can better observe the influence of the particle foreign matters on the GIL or GIS equipment, and the problems that the running state of particles near the basin-shaped insulator and the pillar insulator is difficult to see when the traditional GIL device works, and the insulation performance and the safety and stability performance of the GIL system are reduced are solved.
The invention further provides a GIL test system, which comprises the particle discharge test platform foreign matter release device.
Referring to fig. 4, the working method of the particle discharge experiment platform foreign matter release device includes the following steps:
1. checking whether each part of the releasing device and the opening and closing device 8 are intact, assembling the releasing device, checking whether the air tightness and the electric conductivity of the pressure-resistant cylindrical cavity 1 meet experimental conditions after assembling, and fixing the opening and closing device 8 to the inner cavity of the pressure-resistant cylindrical cavity 1 and at a position required by the experimental conditions;
further, whether each part in the releasing device is perfectly usable or not is checked, whether the opening and closing device 8 is tested, whether metal particles can be sensitively released or not is tested, meanwhile, the pressure-resistant cylindrical cavity 1 is assembled, the first section of the guide rod main body 3 penetrates through one of the metal cover plates 2, then the metal cover plate 2 is connected with one end of the pressure-resistant cylindrical cavity 1, meanwhile, the epoxy sleeve 5 is sleeved on the first section, the epoxy sleeve 5 is fixedly connected with the outer side wall of the metal cover plate 2, the acrylic sleeve 6 is sleeved at the outer end of the epoxy sleeve 5, and the guide rod head 4 is connected with one end of the first section far away from the metal cover plate 2 in a threaded manner. The insulator is sleeved on the second section and fixedly connected with the side wall of the pressure-resistant cylindrical cavity 1, the opening and closing device for testing is arranged at the upper end of the inner side wall of the pressure-resistant cylindrical cavity 1, meanwhile, the electromagnetic piece 9 is arranged on the outer side wall of the pressure-resistant cylindrical cavity 1 and is positioned at the upper end of the opening and closing device 8, and the other metal cover plate 2 is connected with the other end of the pressure-resistant cylindrical cavity 1 for sealing.
2. Based on the condition that experimental conditions are met, the vacuum pump is communicated with the inflation valve 70, air in the pressure-resistant cylindrical cavity 1 of the vacuum pump releasing device is pumped out, the air pressure gauge 71 is observed, when the gauge pressure of the air pressure gauge 71 is minus 0.1MPa, the inflation valve 70 is closed, air pumping is stopped, a pipe of an insulating gas tank is connected to the inflation valve 70, insulating gas is inflated into the pressure-resistant cylindrical cavity 1, after the pressure required by the experiment is reached, the inflation valve 70 is closed, and the vacuum pump releasing device is kept stand, so that the insulating gas is uniformly distributed in the pressure-resistant cylindrical cavity 1;
further, after the assembly based on the first step, the opening and closing device 8 is placed at a position satisfying the experimental condition, and is communicated with the inflation valve 70 through the external vacuum pump, so that the air of the pressure-resistant cylindrical cavity 1 is pumped out, and then the insulating gas is injected into the interior, so as to provide the experimental environment for the experiment.
3. The power supply of the electromagnetic member 9 is turned off through the remote control device, and after the electromagnetic member 9 is demagnetized, the second rotating plate 81 in the opening and closing device 8 takes the rotating shaft 82 as a rotating center, and the second rotating plate 81 is opened, so that metal particles are released to a test position;
further, the experimental position is selected and placed according to the experimental requirement, and is selected according to the actual practice.
4. An adjustable high-voltage power supply was connected to the head 4, the voltage was slowly increased, the test state of the metal particles was observed, and test data was recorded.
Further, at the time of slowly increasing the voltage, whether the metal particles are lifted, the movement state after the lifting, and the attached position are observed, and the lifting voltage is recorded.
5. The power supply voltage was reduced until it was 0, and then the discharge device was discharged to complete the test.
Furthermore, the safety is improved by discharging, and the danger is avoided.
The whole working method can ensure the good operation of the test device, completely simulate the generation process, the movement and the process of the metal particles in the experimental process, is simple and convenient for realizing the test result, and can ensure the safety of the test personnel to the greatest extent.
1. The foreign matter release device is provided with a small electromagnetic opening and closing device, is simple in structure and convenient to install, can be suitable for GIL models with different proportions and sizes, and can release metal particles at different positions through the opening and closing device, so that the research on the insulativity of a GIL system and the research on the safety and stability performance are improved.
2. The electromagnetic opening and closing device simulates a state process that metal particles fall from the cavity, and corresponds to an important process that the metal particles are generated and fall when the GIL operates, so that the device simulates the whole process from generation to final movement ending of the metal particles, is convenient for observing release at different positions, and reduces the difficulty of researching the GIL system.
3. The electromagnetic opening and closing device can change the installation position at will, can simulate different motion states and motion results of metal particles at different distances from the insulator and at different heights from the bottom of the cavity, is convenient to observe and release at different positions, and is convenient to use and simple in structure.
4. An epoxy sleeve with the thickness of 5mm is sleeved between the guide rod main body and the left cover plate, so that the high-voltage guide rod can be effectively prevented from climbing upwards along the cover plate.
5. The guide rod main body and the guide rod head are in threaded connection, a wire is screwed on threads during wiring and is clamped by the guide rod main body and the guide rod head, and the connection mode is more compact and safer than other modes.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
Claims (9)
1. The foreign matter release device of the particle discharge experiment platform is characterized by comprising a GIL device, an opening and closing device (8) and an electromagnetic piece (9);
the opening and closing device (8) is arranged at the top of the inner side of the GIL device, the electromagnetic piece (9) is arranged at the top of the outer side of the GIL device, and the electromagnetic piece (9) is positioned above the opening and closing device (8) so that the opening and closing device (8) releases metal particles through the electromagnetic piece (9), the electromagnetic piece (9) is electrically connected with an external power supply, and the electromagnetic piece (9) is in signal connection with the remote control device;
the opening and closing device (8) comprises a first rotating plate (80), a second rotating plate (81) and a rotating shaft (82), wherein the first rotating plate (80) and the second rotating plate (81) are connected through the rotating shaft (82) in a rotating mode, the first rotating plate (80) is connected with the top of the inner side wall of the pressure-resistant cylindrical cavity (1) through screws, the releasing position can be replaced, and metal particles are used for being placed on the second rotating plate (81).
2. The particle discharge experiment platform foreign matter release apparatus according to claim 1, wherein the GIL device comprises a housing, a conductive structure and a gas device (7), the conductive structure is disposed in the housing, one end of the conductive structure extends out of the housing for connecting a voltage, and the gas device (7) is disposed at an upper end of the housing for setting a gas pressure of an inner cavity of the housing.
3. The particle discharge experiment platform foreign matter release device according to claim 2, wherein the housing comprises a pressure-resistant cylindrical cavity (1) and an insulating cover plate (2), the insulating cover plates (2) are arranged at two ends of the pressure-resistant cylindrical cavity (1), the conductive structure is arranged in the inner cavity of the pressure-resistant cylindrical cavity (1), and one end of the conductive structure extends out of the insulating cover plate (2) at one side and is used for connecting voltage.
4. A particle discharge experiment platform foreign matter release apparatus according to claim 3, wherein the conductive structure comprises a conductive rod structure and an insulating structure, the conductive rod structure is arranged in the inner cavity of the pressure-resistant cylindrical cavity (1), one end of the conductive rod structure extends out of the inner cavity of the pressure-resistant cylindrical cavity (1), and one end of the conductive rod structure located outside the pressure-resistant cylindrical cavity (1) is connected with the insulating structure.
5. The particle discharge experiment platform foreign matter release device according to claim 4, wherein the conductive rod structure comprises a guide rod main body (3) and a guide rod head (4), the insulation structure comprises an epoxy sleeve (5) and an acrylic sleeve (6), the guide rod main body (3) comprises a first section and a second section, wherein the second section of the guide rod main body (3) is arranged in the pressure-resistant cylindrical cavity (1), the first section of the guide rod main body (3) penetrates through the insulation cover plate (2), the first section is arranged on the outer side of the pressure-resistant cylindrical cavity (1), one end of the first section is connected with the guide rod head (4), the first section of the guide rod main body (3) is provided with the epoxy sleeve (5), and the outer surface of the epoxy sleeve (5) is provided with the acrylic sleeve (6), wherein the epoxy sleeve (5) is connected with the insulation cover plate (2) through which the guide rod main body (3) penetrates.
6. The device for releasing foreign matter on a particle discharge experiment platform according to claim 3, wherein,
the inner cavity of the pressure-resistant cylindrical cavity (1) is provided with a conductive film.
7. The particle discharge experiment platform foreign matter release device according to claim 2, wherein the gas device (7) comprises an inflation valve (70) and a barometer (71), the inflation valve (70) is connected with the pressure-resistant cylindrical cavity (1), the inflation valve (70) is communicated with the inner cavity of the pressure-resistant cylindrical cavity (1), and the barometer (71) is arranged on the inflation valve (70).
8. The particle discharge experiment platform foreign matter release device according to claim 1, further comprising an insulator (10), wherein the insulator (10) is located in the inner cavity of the pressure-resistant cylindrical cavity (1), the insulator (10) is sleeved on the outer surface of the guide rod main body (3), and the insulator (10) is connected with the inner side wall of the pressure-resistant cylindrical cavity (1).
9. A GIL assay system comprising the particle discharge bench foreign matter release apparatus of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| JPH05146014A (en) * | 1991-11-22 | 1993-06-11 | Hitachi Ltd | Device and method for monitoring gas-insulated machinery and apparatus |
| JPH05164808A (en) * | 1991-12-11 | 1993-06-29 | Hitachi Cable Ltd | Detecting method for partial discharge from phase-segragated, sealed bus-bar |
| JPH0843475A (en) * | 1994-08-03 | 1996-02-16 | Tokyo Electric Power Co Inc:The | Method and apparatus for detecting partial discharge in insulating apparatus |
| JP2004340894A (en) * | 2003-05-19 | 2004-12-02 | Mitsubishi Electric Corp | Diagnostic device for gas insulation |
| JP2006208017A (en) * | 2005-01-25 | 2006-08-10 | Kyushu Institute Of Technology | Partial discharge detector device in gas insulation equipment |
| JP5530966B2 (en) * | 2011-03-10 | 2014-06-25 | 株式会社日立製作所 | Method and apparatus for testing insulation performance of gas insulation equipment |
| CN104215888A (en) * | 2014-09-03 | 2014-12-17 | 广州供电局有限公司 | GIS (gas insulated switchgear) defect simulator |
| CN104166080A (en) * | 2014-09-05 | 2014-11-26 | 国家电网公司 | GIS device partial discharge defect simulation device used on non-power-frequency working condition |
| CN204731371U (en) * | 2015-05-22 | 2015-10-28 | 广西电网有限责任公司电力科学研究院 | A kind of free metal particle defects analogue experiment installation of disc insulator |
| CN105784569B (en) * | 2016-04-12 | 2019-02-01 | 西安交通大学 | Visual experiment platform for researching movement of free conductive particles in GIS |
| CN208140869U (en) * | 2018-05-10 | 2018-11-23 | 国网重庆市电力公司电力科学研究院 | A kind of insulation defect simulation system |
| CN108375719A (en) * | 2018-05-11 | 2018-08-07 | 沈阳工业大学 | A kind of experimental provision and method based on metal particle kinetic characteristic research |
| CN108919071B (en) * | 2018-06-12 | 2023-11-28 | 沈阳工业大学 | Device and method for testing and measuring three-dimensional movement morphology of metal particles under coaxial electrode |
| CN108535616A (en) * | 2018-06-13 | 2018-09-14 | 云南电网有限责任公司昆明供电局 | Free metal particle insulation defect analogue experiment installation and method in a kind of GIS |
| CN209803266U (en) * | 2019-02-26 | 2019-12-17 | 沈阳工业大学 | Device for observing movement of metal particles in coaxial electrode under electric-heating composite field |
| CN110108989A (en) * | 2019-05-10 | 2019-08-09 | 沈阳工业大学 | Metal particle movement observations device and method under a kind of plate electrode mulching plastic film condition |
| CN110554288B (en) * | 2019-09-23 | 2021-02-02 | 华北电力大学 | Device for simulating metal particle adhesion behavior and discharge characteristic under GIL/GIS actual operation condition |
| CN115219355A (en) * | 2021-04-19 | 2022-10-21 | 华北电力大学 | GIL metal particle and electrode collision recovery coefficient measuring device and measuring method |
| CN215599294U (en) * | 2021-04-19 | 2022-01-21 | 中国长江电力股份有限公司 | GIS partial discharge simulation device |
| CN114895158A (en) * | 2022-04-21 | 2022-08-12 | 湖南大学 | Gas insulated power equipment and metal particle discharge fault detection structure and method |
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