A GIS partial discharge on-line monitoring device for high voltage switch and a using method thereof

Abstract

The application discloses a GIS partial discharge on-line monitoring device for high-voltage switch, which comprises a partial discharge on-line monitoring device, and a supporting seat is arranged on the top of the partial discharge on-line monitoring device and located at the back of the partial discharge on-line monitoring device. The supporting seat is installed, the positioning bolt can be screwed out according to actual needs, the fixing of the rotating block is released, the connecting plate is moved along the through groove with the rotating rod as the center, the fixed plate is rotated to the appropriate angle, then the positioning bolt is screwed with the threaded hole to fix the rotating block at the appropriate angle, then the fixed plate can be installed at the working position at the angle by the fixing component from the fixed hole, the fixed plate can be stably supported by the connecting plate, the rotating block, the rotating plate, the rotating rod and the supporting seat under the support of the fixing component, and the device can be conveniently and flexibly installed at multiple angles.

Description

Technical Field

[0001] This invention relates to the field of GIS partial discharge online monitoring device technology, specifically to a GIS partial discharge online monitoring device for high-voltage switches and its usage method. Background Technology

[0002] The GIS partial discharge online monitoring device is an essential component in high-voltage switchgear. It enables the observation and study of insulation aging caused by partial discharge in the cables of high-voltage switches. It requires an HFCT sensor mounted on the outside of the cable under test, which transmits the coupled pulse signal to the GIS partial discharge online detection device via a coaxial cable. The analog signal is amplified and converted into a digital signal for transmission to the monitoring host. Traditional devices are inadequate, lacking convenient and flexible installation options and requiring fixed angles. A new GIS partial discharge online monitoring device for high-voltage switches and its usage method offer greater convenience for monitoring work.

[0003] The shortcomings of existing GIS partial-displacement online monitoring devices are:

[0004] 1. Patent document: CN216485335U, discloses a GIS partial discharge online monitoring device, "including a data processing box and a detection structure. The data processing box includes casters, a top box, a processing box shell, a signal access terminal, heat dissipation fins, a temperature and humidity detector, a smoke alarm, an electrical structure, a gas collection hood, and a heat absorption and heat transfer back plate. The electrical structure includes a UHF filter, a UHF signal conversion amplifier, an ultrasonic filter, an ultrasonic signal conversion amplifier, an analysis and processing circuit, a wireless network transmission device, a memory, and a GPS positioning structure. The detection structure includes a detection shell, a UHF HFCT sensor, an ultrasonic HFCT sensor, a fixing buckle, and a fixing strap. The beneficial effects of this utility model are: simple installation, stable operation, and convenient movement. Based on the combined use of UHF ultra-high frequency detection technology and ultrasonic detection technology, it greatly improves the accuracy of GIS partial discharge online monitoring, can timely detect GIS insulation defects, and avoid insulation failures." Traditional devices are not perfect and are not convenient for flexible installation of partial discharge online monitoring instruments from multiple angles, reducing installation flexibility.

[0005] 2. Traditional devices are not perfect and do not provide good waterproofing after the coaxial cable is connected to the interface, which reduces safety.

[0006] 3. Traditional devices are not perfect and are not convenient for arranging and positioning coaxial cables connected to HFCT sensors, which reduces neatness.

[0007] 4. Traditional devices are not perfect and lack facilities for easy cleaning of HFCT sensors, which is quite troublesome. Summary of the Invention

[0008] The purpose of this invention is to provide an online monitoring device for partial discharge of high-voltage switches using GIS and its usage method, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a GIS partial discharge online monitoring device for high voltage switches, comprising a partial discharge online monitoring instrument, wherein a support is mounted on the top of the partial discharge online monitoring instrument and the support is located on the back of the partial discharge online monitoring instrument.

[0010] The support has a through groove on its outer side and multiple positioning holes through one side of the support. A positioning bolt is installed through one of the positioning holes. A rotating rod is installed on the inner side of the support. A rotating plate is installed on the outer side of the rotating rod. A rotating block is installed on the back of the rotating plate. A connecting plate is installed on the back of the rotating block. A fixing plate is installed on the back of the connecting plate. A fixing hole is installed through the inside of the fixing plate. The fixing hole can provide a through channel for fixing components.

[0011] Preferably, the partial effusion online monitor has four bolts threaded on its front side, and a cover plate is installed on the outside of the four bolts. Multiple interfaces are installed on the bottom of the partial effusion online monitor.

[0012] Preferably, a support ring is installed on the outer side of each of the plurality of interfaces, a conical sleeve is installed on the outer side of the support ring, a sleeve is installed at the bottom of the conical sleeve, a rubber ring is installed on the inner side of the sleeve, a rubber block is installed on the inner wall of the back of the rubber ring, an elastic band is installed on the front side of the sleeve, a plug is installed at the bottom of the elastic band, a sealing ring is installed on the inner side of the plug, a clearance groove is opened through the front side of the plug, and an outer ring is installed on the outer side of the plug.

[0013] Preferably, a motor is installed on the left side of the partial discharge online monitoring instrument via a connecting component. A lead screw is installed at the bottom output end of the motor. A threaded ring is installed on the outer side of the lead screw. An L-plate is installed on the right side of the threaded ring. A guide groove is opened through the interior of the L-plate. A positioning sleeve is installed through the interior of the guide groove and is located on the outer side of the L-plate. A connecting rod is installed on the right side of the positioning sleeve. A support plate is installed on the right side of the connecting rod. A wire-laying plate is installed on the front of the L-plate. Multiple elastic ropes are installed on the front of the wire-laying plate. Multiple N-plates are installed on the front of the wire-laying plate. Each N-plate is located on the outer side of each elastic rope. A screw is installed through the thread on the front of the N-plate. A pressure block is sleeved on the outer side of the screw via a bearing and is located on the front of the elastic rope.

[0014] Preferably, the connecting plate passes through the through groove;

[0015] The top of the support plate is connected to the bottom of the partial discharge online monitoring instrument.

[0016] Preferably, a seat plate is installed on the front of the cover plate, a support column is installed on the front of the seat plate, and a ring plate is installed on the front of the seat plate. The ring plate is located outside the support column. Two springs are installed on the top of the ring plate. Rubber bands are connected to each other on the back of the two springs. A cotton brush is installed on the inner side of the ring plate, and a cotton sleeve is installed on the outer side of the support column, with the cotton sleeve located inside the cotton brush.

[0017] Preferably, a coaxial cable is inserted into the bottom of one of the interfaces, a connector is installed at the bottom of the coaxial cable, and an HFCT sensor is installed at the bottom of the connector.

[0018] The partial discharge online monitor, interface, coaxial cable, connector, and HFCT sensor constitute the monitoring module.

[0019] Preferably, the method of using the GIS partial discharge online monitoring device is as follows:

[0020] S1. First, the staff can move the partial effusion online monitoring instrument to a suitable position in the high-voltage switchgear according to the actual needs. Then, the positioning bolt is unscrewed by the thread action of the threaded hole to release the fixing effect on the rotating block. The connecting plate is pushed by the fixed plate, so that the connecting plate moves along the through groove with the rotating block as the center of the rotating rod under the action of external force until the fixed plate rotates to a suitable angle with the rotating rod as the center. Then, the staff needs to insert the positioning bolt through the positioning hole corresponding to the threaded hole and rotate the positioning bolt so that the positioning bolt is threadedly connected to the threaded hole by the rotational power. Under the support of the support, the rotating block is pressed and fixed, so that the fixed plate can be fixed at a suitable angle. Then, the staff can install the fixed plate from the fixed hole at that angle to the working location with the fixing component. The fixed plate can be stably supported by the connecting plate, rotating block, rotating plate, rotating rod and support under the support of the fixing component.

[0021] S2. Subsequently, the staff can connect the HFCT sensor to the interface via a coaxial cable through the connector as needed, while ensuring that the cable of the high-voltage switch passes through the inside of the HFCT sensor and powering on the partial discharge online monitor. This allows the HFCT sensor to couple the partial discharge pulse current signal in the cable and transmit the coupled pulse signal to the partial discharge online monitor through the connector, coaxial cable, and interface. The partial discharge online monitor will amplify and convert the analog signal into a digital signal before transmitting it to the detection host, thus enabling the monitoring module to perform GIS partial discharge monitoring on the cable of the high-voltage switch.

[0022] S3. After connecting the coaxial cable to the interface, the operator can move the insert through the outer ring. Under the action of external force, the insert will move the sealing ring. At the same time, under the action of external force and the support of the sleeve, the insert will stretch the elastic band and bend, causing the insert to rotate 180 degrees clockwise. Simultaneously, the insert will be fitted onto the outside of the coaxial cable using the relief groove. Under the action of external force, the insert will cause the sealing ring to contact the outside of the coaxial cable. Then, push the insert upward, so that the insert and the sealing ring are inserted into the inside of the rubber ring. At the same time, the rubber block will be inserted into the inside of the relief groove and fitted under the support of the rubber ring. Thus, the sealing ring, rubber block and rubber ring can form a sealing space at the bottom of the interface and the outside of the coaxial cable. The support ring and cone sleeve can provide a flow guide for rainwater and prevent water from entering at the connection between the interface and the coaxial cable.

[0023] S4. Afterwards, the staff can start the motor with the support of the partial discharge monitoring instrument through the connecting parts as needed. The motor drives the lead screw to rotate, and the lead screw pushes the threaded ring downward under the action of rotation. At the same time, the threaded ring will drive the L plate to move together under the action of external force. The L plate can push the cable tray downward under the guidance of the guide groove and the positioning sleeve. The cable tray can push the elastic rope downward under the action of external force, so that the elastic rope moves to a suitable height. Then, the staff needs to pull the elastic rope out from the inside of the N plate and wrap it around the outside of the coaxial cable. Then, one end of the elastic rope is passed through the inside of the N plate at the corresponding position, and the screw is turned. The screw pushes the pressure block back with the thread of the N plate, so that the pressure block and the cable tray cooperate to squeeze and clamp the elastic rope, so that the elastic rope can clamp and fix the position of the coaxial cable.

[0024] Preferably, step S2 further includes the following steps:

[0025] S21. Before using the HFCT sensor, the operator can first bend the coaxial cable of the HFCT sensor to place it inside the cotton brush under the support of the base plate and the limit of the ring plate. At the same time, ensure that the HFCT sensor is placed outside the cotton sleeve under the support of the support column. Then, the operator needs to rotate the HFCT sensor at an angle of less than 60 degrees so that the HFCT sensor can push the spring to deform under the support of the ring plate under the action of external force. At the same time, the springs will transmit external force to each other through the rubber band to achieve linkage, so that the springs can make room for the rotation of the HFCT sensor and use the rebound force to push the HFCT sensor to rotate in the opposite direction. This allows the HFCT sensor to rub against the cotton sleeve and cotton brush under the action of rotational power, so that the cotton sleeve and cotton brush can wipe and clean the HFCT sensor.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. This invention, by installing a support base, allows the operator to unscrew the positioning bolt as needed, releasing the fixing of the rotating block and moving the connecting plate along the through groove with the rotating rod as the center until the fixed plate rotates to a suitable angle. Then, the positioning bolt is threaded into the threaded hole to fix the rotating block at the appropriate angle. Subsequently, the operator can use the fixing component to install the fixed plate from the fixing hole at that angle to the work site. The fixed plate can stably support the localization online monitoring instrument through the connecting plate, rotating block, rotating plate, rotating rod, and support base under the support of the fixing component. This allows the device to be installed at multiple angles, improving installation flexibility.

[0028] 2. This invention features a support ring that provides stable support to the conical sleeve at the interface. After connecting the coaxial cable to the interface, the operator can move the insert via the outer ring, causing the insert to rotate the sealing ring 180 degrees clockwise. Simultaneously, the coaxial cable is moved through the clearance groove to the inside of the sealing ring. Then, the insert is pushed upwards, inserting it into the inside of the rubber ring. At the same time, the rubber block engages with the clearance groove, allowing the sealing ring, rubber block, and rubber ring to fit tightly against the bottom of the interface and the outside of the coaxial cable, creating a seal. Rainwater falls onto the top of the conical sleeve and slides off at an angle to the outside, thus preventing water from entering at the connection between the interface and the coaxial cable, providing waterproofing and improving safety.

[0029] 3. This invention features a motor that allows workers to start it as needed. The motor rotates the lead screw, which in turn pushes the threaded ring downwards. Simultaneously, the threaded ring moves the L-plate, which in turn moves the L-plate downwards using the guide groove and positioning sleeve. This pushes the cable tray downwards, moving the elastic rope to the appropriate height. Workers then wrap the elastic rope around the outside of the coaxial cable and insert one end of the rope through the corresponding N-plate. By turning the screw, the pressure block and cable tray engage to clamp and secure the elastic rope, allowing it to hold the coaxial cable in place. This facilitates neat and orderly arrangement of the coaxial cables, improving cleanliness and preventing multiple coaxial cables from tangling together.

[0030] 4. This invention, with its mounting plate, allows the operator to place the HFCT sensor inside the cotton brush before use, ensuring it is on the outside of the cotton sleeve. The operator then rotates the HFCT sensor back and forth, causing it to rub against the cotton sleeve and brush under rotational force. Simultaneously, the HFCT sensor deforms a spring, which transmits external force through a rubber band, creating a linkage that allows both springs to deform and create rotational space for the HFCT sensor. The rebound force provides a counter-rotational assist to the HFCT sensor, enabling the cotton sleeve and brush to clean it. This device facilitates cleaning of the HFCT sensor and improves its functionality. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the three-dimensional structure of the support of the present invention;

[0033] Figure 3 This is a schematic diagram of the interface structure of the present invention;

[0034] Figure 4 This is a schematic diagram of the three-dimensional structure of the annular plate of the present invention;

[0035] Figure 5 This is a schematic diagram of the three-dimensional structure of the overhead line board of the present invention;

[0036] Figure 6 This is a side sectional view of the sleeve and insert of the present invention;

[0037] Figure 7 This is a schematic diagram of the inner structure of the support base of the present invention;

[0038] Figure 8 This is a flowchart of the present invention.

[0039] In the diagram: 1. Partial discharge online monitor; 2. Bolt; 3. Cover plate; 4. Interface; 5. Support; 6. Through groove; 7. Positioning hole; 8. Positioning bolt; 9. Rotary rod; 10. Rotary plate; 11. Rotary block; 12. Threaded hole; 13. Connecting plate; 14. Fixing plate; 15. Fixing hole; 16. Support ring; 17. Tapered sleeve; 18. Sleeve; 19. Rubber ring; 20. Rubber block; 21. Elastic band; 22. Insert; 23. Sealing ring; 24. Relief groove; 25. 26. Outer ring; 27. Motor; 28. Lead screw; 29. ​​Threaded ring; 30. L-plate; 31. Guide groove; 32. Positioning sleeve; 33. Connecting rod; 34. Support plate; 35. Cable tray; 36. Elastic rope; 37. N-plate; 38. Screw; 39. Pressure block; 40. Seat plate; 41. Support column; 42. Ring plate; 43. Spring; 44. Rubber band; 45. Cotton brush; 46. Cotton sleeve; 47. Coaxial cable; 48. Connector; 49. HFCT sensor. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Please refer to Figure 1. Figure 4 and Figure 5This invention provides an embodiment of a GIS partial discharge online monitoring device for high-voltage switches and its usage method. The device includes a partial discharge online monitoring instrument 1. Four bolts 2 are threadedly installed on the front of the monitoring instrument 1. A cover plate 3 is installed on the outer side of each bolt 2, and multiple interfaces 4 are installed on the bottom of the monitoring instrument 1. The monitoring instrument 1 provides threaded support for the bolts 2. The bolts 2 can press and fix the cover plate 3 by the thread action with the monitoring instrument 1. Operators can rotate the bolts 2 as needed to separate them from the monitoring instrument 1 by the thread action, thus releasing the cover plate 3. This allows the cover plate 3 to be easily removed, opening the front of the monitoring instrument 1 and facilitating maintenance. The interfaces 4 provide support for the monitoring instrument 1 and also provide connection space for a coaxial cable 46. The monitor 1 has a support 5 mounted on its top, which is located on the back of the partial discharge online monitor 1. A coaxial cable 46 is inserted into the bottom of one of the interfaces 4. A connector 47 is installed at the bottom of the coaxial cable 46, and an HFCT sensor 48 is installed at the bottom of the connector 47. The partial discharge online monitor 1, interface 4, coaxial cable 46, connector 47, and HFCT sensor 48 constitute a monitoring module. The monitoring module can perform online monitoring of partial discharge in high-voltage switch cables. Interface 4 provides support for coaxial cable 46, which in turn provides stable support for connector 47. Connector 47 provides stable support for HFCT sensor 48. HFCT sensor 48 can be fitted onto the outside of the cable under test and transmits the coupled pulse signal to partial discharge online monitor 1 through coaxial cable 46, enabling partial discharge online monitor 1 to amplify and convert the analog signal into a digital signal.

[0044] Please see Figure 1 , Figure 2 and Figure 7This invention provides an embodiment of a GIS partial discharge online monitoring device for high-voltage switches and its usage method, comprising a support base 5, a through groove 6 on the outer side of the support base 5, and multiple positioning holes 7 through one side of the support base 5. A positioning bolt 8 is installed through one of the positioning holes 7. A rotating rod 9 is installed on the inner side of the support base 5, a rotating plate 10 is installed on the outer side of the rotating rod 9, a rotating block 11 is installed on the back of the rotating plate 10, a connecting plate 13 is installed on the back of the rotating block 11, and a fixing plate 14 is installed on the back of the connecting plate 13. A fixing hole 15 is through the interior of the fixing plate 14, providing a through channel for fixing components. The connecting plate 13 passes through the through groove 6. The support base 5 provides space for the through groove 6, and the through groove 6 provides a moving guide for the connecting plate 13. The support base 5 can stably support the rotating plate 10, and the rotating plate 10 can support the rotating block 11. The rotating block 11 can be pressed and fixed by the thread action of the positioning bolt 8 and the positioning hole 7. The operator can adjust the device according to the actual needs. The partial discharge online monitoring instrument 1 is moved to a suitable position in the high-voltage switchgear. Then, the positioning bolt 8 is unscrewed using the thread action with the threaded hole 12, thereby releasing the fixing effect on the rotating block 11. The connecting plate 13 is pushed by the fixed plate 14, so that the connecting plate 13, under the action of external force, drives the rotating plate 10 to move along the through groove 6 with the rotating rod 9 as the center, until the fixed plate 14 rotates to a suitable angle with the rotating rod 9 as the center. Then, the operator needs to insert the positioning bolt 8 through the positioning hole 7 corresponding to the position of the threaded hole 12 and rotate the positioning bolt 8, so that the positioning bolt 8 is threadedly connected to the threaded hole 12 using rotational power. Under the support of the support seat 5, the rotating block 11 is pressed and fixed, so that the fixed plate 14 can be fixed at a suitable angle. Then, the operator can install the fixed plate 14 from the fixed hole 15 at this angle to the working location using the fixing component, so that the fixed plate 14 can stably support the partial discharge online monitoring instrument 1 with the support of the fixing component, the connecting plate 13, the rotating block 11, the rotating plate 10, the rotating rod 9 and the support seat 5.

[0045] Please see Figure 1 , Figure 3 and Figure 6One embodiment of the present invention provides a GIS partial discharge online monitoring device for high-voltage switches and its usage method, comprising an interface 4, with support rings 16 respectively installed on the outer side of multiple interfaces 4, a conical sleeve 17 installed on the outer side of the support rings 16, a sleeve 18 installed at the bottom of the conical sleeve 17, a rubber ring 19 installed on the inner side of the sleeve 18, a rubber block 20 installed on the inner wall of the back of the rubber ring 19, an elastic band 21 installed on the front of the sleeve 18, a plug 22 installed at the bottom of the elastic band 21, and a sealing element installed on the inner side of the plug 22. A recessed groove 24 is provided through the front of the insert 22, and an outer ring 25 is installed on the outside of the insert 22. The interface 4 can provide stable support for the support ring 16 under the support of the partial discharge line monitoring instrument 1. The support ring 16 can provide support for the cone sleeve 17. The cone sleeve 17 has a certain tilt angle, which can provide flow guidance for rainwater. The elastic band 21 has a certain elasticity and can deform under the action of external force. It will rebound after the external force is removed, and can be bent arbitrarily under the action of external force. The operator can use the coaxial cable After cable 46 is connected to interface 4, the outer ring 25 moves the insert 22, causing the insert 22 to move the sealing ring 23 under the action of external force. Simultaneously, under the action of external force and the support of sleeve 18, the insert 22 stretches and bends the elastic band 21, causing the insert 22 to rotate 180 degrees clockwise. At the same time, the insert 22 is fitted onto the outside of the coaxial cable 46 using the relief groove 24. Under the action of external force, the insert 22 causes the sealing ring 23 to contact the outside of the coaxial cable 46. Then, the insert 22 is pushed upwards, causing... The insert 22 drives the sealing ring 23 to be inserted into the inner side of the rubber ring 19. At the same time, the rubber block 20 is inserted into the inner side of the relief groove 24 and fitted under the support of the rubber ring 19. Thus, the sealing ring 23, the rubber block 20 and the rubber ring 19 can form a sealing space at the bottom of the interface 4 and the outside of the coaxial cable 46. The support ring 16 and the cone sleeve 17 can provide a flow guide for rainwater, prevent water from entering at the connection between the interface 4 and the coaxial cable 46, and provide protection for the connection between the interface 4 and the coaxial cable 46, thereby improving safety.

[0046] Please see Figure 1 , Figure 3 and Figure 5This invention provides an embodiment of a GIS partial discharge online monitoring device for high-voltage switches and its usage method, comprising a partial discharge online monitoring instrument 1. A motor 26 is mounted on the left side of the partial discharge online monitoring instrument 1 via a connecting component. A lead screw 27 is mounted on the bottom output end of the motor 26. A threaded ring 28 is threaded onto the outer side of the lead screw 27. An L-plate 29 is mounted on the right side of the threaded ring 28. A guide groove 30 is formed through the interior of the L-plate 29. A positioning sleeve 31 is mounted through the interior of the guide groove 30 and is located on the outer side of the L-plate 29. A connecting rod 32 is mounted on the right side of the positioning sleeve 31. A support plate 33 is mounted on the side. A cable tray 34 is mounted on the front of the L-plate 29. Multiple elastic ropes 35 are mounted on the front of the cable tray 34. Multiple N-plates 36 are mounted on the front of the cable tray 34. Each N-plate 36 is located outside each elastic rope 35. A screw 37 is threaded through the front of the N-plate 36. A pressure block 38 is mounted on the outside of the screw 37 via a bearing. The pressure block 38 is located on the front of the elastic rope 35. The top of the support plate 33 is connected to the bottom of the partial discharge line monitoring instrument 1. The partial discharge line monitoring instrument 1 can stably support the motor 26 through the connecting parts. The motor 26 can provide support for the lead screw 27. Plate 33 can stably support connecting rod 32 under the support of partial discharge line monitoring instrument 1. Connecting rod 32 can provide support for positioning sleeve 31. Guide groove 30 can provide movement guidance for positioning sleeve 31. According to the actual needs, the operator can start motor 26 under the support of partial discharge line monitoring instrument 1 through connecting component, so that motor 26 drives lead screw 27 to rotate. Under the action of rotational power, lead screw 27 uses threads to push threaded ring 28 to move downward. At the same time, threaded ring 28 will drive L plate 29 to move together under the action of external force, so that L plate 29 can be guided by guide groove 30 and positioning sleeve 31. Push the cable tray 34 downwards to move it together, so that the cable tray 34 can push the elastic rope 35 downwards under the action of external force, so that the elastic rope 35 moves to a suitable height. Then, the worker needs to pull the elastic rope 35 out from the inside of the N plate 36 and wrap it around the outside of the coaxial cable 46. Then, one end of the elastic rope 35 is passed through the inside of the N plate 36 at the corresponding position, and the screw 37 is turned so that the screw 37 pushes the pressure block 38 backwards with the thread action of the N plate 36. The pressure block 38 cooperates with the cable tray 34 to squeeze and clamp the elastic rope 35, so that the elastic rope 35 can clamp and fix the position of the coaxial cable 46.

[0047] Please see Figure 1 and Figure 4This invention provides an embodiment of a GIS partial discharge online monitoring device for high-voltage switches and its usage method, comprising a cover plate 3, a base plate 39 mounted on the front of the cover plate 3, a support column 40 mounted on the front of the base plate 39, and a ring plate 41 mounted on the front of the base plate 39, the ring plate 41 being located outside the support column 40. Two springs 42 are mounted on the top of the ring plate 41, and rubber bands 43 are connected to each other on the back of the two springs 42. A cotton brush 44 is mounted on the inner side of the ring plate 41, and a cotton sleeve 45 is mounted on the outer side of the support column 40, with the cotton sleeve 45 located inside the cotton brush 44. The cover plate 3 provides support for the base plate 39, the base plate 39 provides stable support for the ring plate 41, and the ring plate 41 provides support for the cotton brush 44. The inner gap of the cotton brush 44 is slightly smaller than that of the HFCT sensor 48, while the inner space of the ring plate 41 is slightly larger than that of the HFCT sensor 48. The cotton brush 44 and the cotton sleeve 45 are relatively soft and elastic, suitable for use with HFCT sensors. Before using the device 48, the operator can first bend the coaxial cable 46 through the HFCT sensor 48, so that the HFCT sensor 48 is placed inside the cotton brush 44 under the support of the base plate 39 and the limitation of the ring plate 41. At the same time, the operator should ensure that the HFCT sensor 48 is placed outside the cotton sleeve 45 under the support of the support column 40. Then, the operator needs to rotate the HFCT sensor 48 at an angle of less than 60 degrees, so that the HFCT sensor 48 can push the spring 42 to deform under the support of the ring plate 41 under the action of external force. At the same time, the spring 42 will transmit external force through the rubber band 43 to achieve linkage, so that the spring 42 can make room for the rotation of the HFCT sensor 48, and use the rebound force to push the HFCT sensor 48 to rotate in the opposite direction. This allows the HFCT sensor 48 to rub against the cotton sleeve 45 and the cotton brush 44 under the action of rotational power, so that the cotton sleeve 45 and the cotton brush 44 can wipe and clean the HFCT sensor 48.

[0048] Furthermore, the usage method of the GIS partial-displacement online monitoring device is as follows:

[0049] S1. First, the operator can move the partial fault line monitoring instrument 1 to a suitable position in the high-voltage switchgear according to the actual needs. Then, the positioning bolt 8 is unscrewed using the thread action with the threaded hole 12 to release the fixing effect on the rotating block 11. The connecting plate 13 is pushed by the fixed plate 14, so that the connecting plate 13, under the action of external force, drives the rotating plate 10 to move along the through groove 6 with the rotating rod 9 as the center, until the fixed plate 14 rotates to a suitable angle with the rotating rod 9 as the center. Then, the operator needs to insert the positioning bolt 8 through the hole. Positioning hole 7 corresponding to threaded hole 12, and rotating positioning bolt 8, so that positioning bolt 8 is threadedly connected to threaded hole 12 by rotational power, and under the support of support base 5, pressing and fixing rotating block 11, so that fixed plate 14 can be fixed at a suitable angle. Then, the worker can use fixing component to install fixed plate 14 from fixed hole 15 at this angle to the work site, so that fixed plate 14 can be stably supported by connecting plate 13, rotating block 11, rotating plate 10, rotating rod 9 and support base 5 under the support of fixing component;

[0050] S2. Subsequently, the staff can connect the HFCT sensor 48 to the interface 4 via the connector 47 and the coaxial cable 46 according to the actual needs. At the same time, the cable of the high voltage switch is passed through the inside of the HFCT sensor 48, and the partial discharge online monitor 1 is powered on. This allows the HFCT sensor 48 to couple the partial discharge pulse current signal in the cable and transmit the coupled pulse signal to the partial discharge online monitor 1 through the connector 47, the coaxial cable 46 and the interface 4. The partial discharge online monitor 1 will amplify and convert the analog signal into a digital signal before transmitting it to the detection host.

[0051] S3. After connecting the coaxial cable 46 to the interface 4, the operator can move the insert 22 via the outer ring 25. Under the action of external force, the insert 22 will move the sealing ring 23. At the same time, under the action of external force and the support of the sleeve 18, the insert 22 will stretch and bend the elastic band 21, causing the insert 22 to rotate 180 degrees clockwise. Simultaneously, the insert 22 will be fitted onto the outside of the coaxial cable 46 using the relief groove 24. At the same time, under the action of external force, the insert 22 will move the sealing ring 23 and the coaxial cable 46. The outer side of the cable 46 contacts the plug 22, which is then pushed upward to insert the plug 22 and the sealing ring 23 into the inner side of the rubber ring 19. At the same time, the rubber block 20 is inserted into the inner side of the relief groove 24 and fitted under the support of the rubber ring 19. Thus, the sealing ring 23, the rubber block 20 and the rubber ring 19 can form a sealing space at the bottom of the interface 4 and the outer side of the coaxial cable 46. The support ring 16 and the cone sleeve 17 can provide a flow guide for rainwater and prevent water from entering at the connection between the interface 4 and the coaxial cable 46.

[0052] S4. Subsequently, the staff can start the motor 26 with the support of the partial discharge monitoring instrument 1 via the connecting components, so that the motor 26 drives the lead screw 27 to rotate. Under the action of rotational power, the lead screw 27 pushes the threaded ring 28 downward through the thread. At the same time, the threaded ring 28 will drive the L plate 29 to move together under the action of external force. The L plate 29 can push the overhead line plate 34 downward together with the guide plate 34 under the guidance of the guide groove 30 and the positioning sleeve 31. The overhead line plate 34 can move downward under the action of external force. Push the elastic rope 35 to move it to a suitable height. Then, the worker needs to pull the elastic rope 35 out from the inside of the N plate 36 and wrap it around the outside of the coaxial cable 46. Then, insert one end of the elastic rope 35 through the inside of the N plate 36 at the corresponding position and turn the screw 37. The screw 37 will push the pressure block 38 backward by using the thread action with the N plate 36. The pressure block 38 will cooperate with the cable tray 34 to squeeze and clamp the elastic rope 35, so that the elastic rope 35 can be clamped and fixed in the position of the coaxial cable 46.

[0053] Furthermore, step S2 also includes the following steps:

[0054] S21. Before using the HFCT sensor 48, the operator can first bend the coaxial cable 46 through the HFCT sensor 48, so that the HFCT sensor 48 is placed inside the cotton brush 44 under the support of the seat plate 39 and the limit of the ring plate 41. At the same time, ensure that the HFCT sensor 48 is placed outside the cotton sleeve 45 under the support of the support column 40. Then, the operator needs to rotate the HFCT sensor 48 at an angle of less than 60 degrees, so that the HFCT sensor 48 can push the spring 42 to deform under the support of the ring plate 41 under the action of external force. At the same time, the spring 42 will transmit external force through the rubber band 43 to achieve linkage, so that the spring 42 can make room for the rotation of the HFCT sensor 48, and use the rebound force to push the HFCT sensor 48 to rotate in the opposite direction, so that the HFCT sensor 48 can rub against the cotton sleeve 45 and the cotton brush 44 under the action of rotational power, so that the cotton sleeve 45 and the cotton brush 44 can wipe and clean the HFCT sensor 48.

[0055] Working principle: Before using the device, it is necessary to check whether there are any problems that may affect its use. When the staff needs to use the device, they should first adjust the fixed plate 14 to a suitable angle along the through groove 6 according to the actual situation. Then, use the fixing parts to firmly install the fixed plate 14 at the working location through the fixing hole 15, and power on the partial discharge online monitoring instrument 1. Then, connect the corresponding number of coaxial cables 46 to the interface 4, and connect the coaxial cables 46 to the HFCT sensor 48 through the connector 47. Then, start the motor 26 to adjust the overhead line plate 34 to a suitable height, so that the coaxial cables 46 are fixedly arranged on the front of the overhead line plate 34 using the elastic rope 35 and the pressure block 38. Finally, clean the HFCT sensor 48 with the cotton brush 44 and cotton sleeve 45 according to the actual situation. Finally, pass the high voltage cable of the high voltage switch through the HFCT sensor 48, so that the HFCT sensor 48 clamps the high voltage cable for partial discharge monitoring.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be used to limit the scope of the claims by their position.

Claims

1. A GIS partial discharge on-line monitoring device for high voltage switch, comprising a partial discharge on-line monitoring instrument (1), characterized in that: The support seat (5) is arranged on the top of the partial discharge on-line monitor (1) and located at the back of the partial discharge on-line monitor (1); A plurality of positioning holes (7) are arranged on one side of the support seat (5), one of the positioning holes (7) is arranged with a positioning bolt (8) penetratingly, a rotating rod (9) is arranged on the inner side of the support seat (5), a rotating plate (10) is arranged on the outer side of the rotating rod (9), a rotating block (11) is arranged on the back of the rotating plate (10), a connecting plate (13) is arranged on the back of the rotating block (11), a fixed plate (14) is arranged on the back of the connecting plate (13), a fixed hole (15) is arranged penetratingly on the inner side of the fixed plate (14), and the fixed hole (15) can provide a penetrating channel for a fixing component; Four bolts (2) are arranged on the front of the partial discharge on-line monitor (1), the outer sides of the four bolts (2) are connected with a cover plate (3), and a plurality of interfaces (4) are arranged on the bottom of the partial discharge on-line monitor (1); A motor (26) is arranged on the left side of the partial discharge on-line monitor (1) through a connecting component, a lead screw (27) is arranged on the bottom output end of the motor (26), a threaded ring (28) is arranged on the outer side of the lead screw (27) in a threaded mode, an L plate (29) is arranged on the right side of the threaded ring (28), a guide groove (30) is arranged penetratingly on the inner side of the L plate (29), a positioning sleeve (31) is arranged penetratingly on the inner side of the guide groove (30) and located on the outer side of the L plate (29), a connecting rod (32) is arranged on the right side of the positioning sleeve (31), a support plate (33) is arranged on the right side of the connecting rod (32), a wire supporting plate (34) is arranged on the front of the L plate (29), a plurality of elastic ropes (35) are arranged on the front of the wire supporting plate (34), a plurality of N plates (36) are arranged on the front of the wire supporting plate (34), each N plate (36) is located on the outer side of each elastic rope (35), a screw (37) is arranged on the front of each N plate (36) in a threaded mode, a pressing block (38) is arranged on the outer side of the screw (37) through a bearing, and the pressing block (38) is located on the front of the elastic rope (35); The connecting plate (13) penetrates the through slot (6); The top of the support plate (33) is connected with the bottom of the partial discharge on-line monitor (1); A seat plate (39) is arranged on the front of the cover plate (3), a support column (40) is arranged on the front of the seat plate (39), a ring plate (41) is arranged on the outer side of the support column (40), two reed pieces (42) are arranged on the top of the ring plate (41), a rubber band (43) is arranged on the back of the two reed pieces (42), a cotton brush (44) is arranged on the inner side of the ring plate (41), a cotton sleeve (45) is arranged on the outer side of the support column (40) and located on the inner side of the cotton brush (44).

2. The partial discharge on-line monitoring device for GIS high voltage switch according to claim 1, characterized in that: The outer side of each of the plurality of interfaces (4) is provided with a support ring (16), the outer side of the support ring (16) is provided with a taper sleeve (17), the bottom of the taper sleeve (17) is provided with a sleeve (18), the inner side of the sleeve (18) is provided with a rubber ring (19), the back inner wall of the rubber ring (19) is provided with a rubber block (20), the front of the sleeve (18) is provided with an elastic band (21), the bottom of the elastic band (21) is provided with an insertion sleeve (22), the inner side of the insertion sleeve (22) is provided with a sealing ring (23), the front of the insertion sleeve (22) is provided with a recess slot (24), and the outer side of the insertion sleeve (22) is provided with an outer ring (25).

3. The partial discharge on-line monitoring device for GIS high voltage switch according to claim 2, characterized in that: The bottom of one of the interfaces (4) is provided with a coaxial cable (46), the bottom of the coaxial cable (46) is provided with a connector (47), and the bottom of the connector (47) is provided with an HFCT sensor (48). The partial discharge on-line monitoring instrument (1), the interface (4), the coaxial cable (46), the connector (47) and the HFCT sensor (48) form a monitoring module.

4. The GIS partial discharge on-line monitoring device for high-voltage switch and the use method thereof according to claim 3, wherein the use method of the GIS partial discharge on-line monitoring device is as follows: S1, first, the staff moves the partial discharge on-line monitoring instrument (1) to a suitable position of the high-voltage switch cabinet according to the actual needs, then the positioning bolt (8) is screwed out by the threaded hole (12) to release the fixing effect on the rotating block (11), and the fixed plate (14) pushes the connecting plate (13), so that the connecting plate (13) moves along the through slot (6) by the rotating block (11) to drive the rotating plate (10) with the rotating rod (9) as the center, until the fixed plate (14) rotates to a suitable angle with the rotating rod (9) as the center, then the staff needs to pass the positioning bolt (8) through the positioning hole (7) corresponding to the threaded hole (12), and rotates the positioning bolt (8) to make the positioning bolt (8) threadedly connected with the threaded hole (12) by the rotating power, and press the fixed rotating block (11) under the support of the support seat (5), so that the fixed plate (14) is fixed at a suitable angle, then the staff can install the fixed plate (14) at the angle by the fixing member from the fixed hole (15) to the working site, so that the fixed plate (14) is stably supported by the connecting plate (13), the rotating block (11), the rotating plate (10), the rotating rod (9) and the support seat (5) under the support of the fixing member. S2, then the staff according to the actual situation needs to connect HFCT sensor (48) through joint (47) with the interface (4) by coaxial cable (46), at the same time, the high voltage switch cable through the inside of HFCT sensor (48), and power on the partial discharge on-line monitoring instrument (1), make HFCT sensor (48) coupled to the partial discharge pulse current signal in the cable, and the coupled pulse signal through joint (47), coaxial cable (46) and interface (4) transmission to partial discharge on-line monitoring instrument (1), partial discharge on-line monitoring instrument (1) will be analog signal after amplification and analog-digital conversion into digital signal transmission to the detection host, so that the monitoring module on the cable of high voltage switch GIS partial discharge monitoring; S3, then the staff in the coaxial cable (46) and interface (4) connection through the outer ring (25) move the plug-in cylinder (22), make the plug-in cylinder (22) under the action of external force driven sealing ring (23) movement, at the same time, the plug-in cylinder (22) will be under the action of external force and the support of sleeve (18) stretch elastic band (21) bending deformation, make the plug-in cylinder (22) clockwise rotation one hundred and eighty degrees, at the same time, the plug-in cylinder (22) will be used in the let place groove (24) set in the outside of coaxial cable (46), at the same time, the plug-in cylinder (22) will be under the action of external force driven sealing ring (23) and the outside of coaxial cable (46) contact, then push the plug-in cylinder (22) upward, make the plug-in cylinder (22) driven sealing ring (23) together inserted into the inside of rubber ring (19), at the same time, the rubber block (20) will be in the support of rubber ring (19) inserted into the inside of let place groove (24) and embedded, so that the sealing ring (23), rubber block (20) and rubber ring (19) cooperate in the bottom of interface (4) and the outside of coaxial cable (46) form sealed space, while the support ring (16) and the cone sleeve (17) can provide flow guide for rainwater, prevent the interface (4) and the joint of coaxial cable (46) water. S4, then the staff according to the actual situation needs through the connecting parts in the partial discharge online monitoring instrument (1) under the support of the motor (26) to start the motor (26) with lead screw (27) rotation, lead screw (27) in the rotation of the power under the action of the threaded ring (28) will move down, at the same time threaded ring (28) will move L plate (29) under the action of external force, make L plate (29) with guide groove (30) and the guide sleeve (31) under the guide cooperation of the frame line plate (34) to move down, make frame line plate (34) under the action of external force to push the elastic rope (35), make elastic rope (35) to move to the appropriate height, then the staff need to pull the elastic rope (35) from the inside of N plate (36) and around the coaxial cable (46) outside, then again through the inside of N plate (36) of the corresponding position of the elastic rope (35) and turn the screw (37), make the screw (37) with N plate (36) under the action of the threaded push back pressure block (38), make pressure block (38) and frame line plate (34) cooperation extrusion clamping fixed elastic rope (35), make elastic rope (35) hoop fixed coaxial cable (46) position.

5. The method for using the GIS partial discharge on-line monitoring device for high voltage switch according to claim 4, characterized in that: In the step S2, further comprising the following steps: S21, before using HFCT sensor (48), the staff first through the HFCT sensor (48) bending coaxial cable (46), make HFCT sensor (48) under the support of the seat plate (39) and ring plate (41) limit to put to the inside of the cotton brush (44), at the same time ensure that the HFCT sensor (48) under the support of the support column (40) to put to the outside of the cotton sleeve (45), then the staff need to rotate the HFCT sensor (48) at an angle less than sixty degrees, make the HFCT sensor (48) under the action of external force to push the reed (42) under the support of the ring plate (41) deformation, at the same time the reed (42) will be through the rubber band (43) each other to transfer external force to realize linkage, so as to make the reed (42) for the HFCT sensor (48) to make room for rotation space, and use the rebound force to push the HFCT sensor (48) reverse rotation, so as to make the HFCT sensor (48) under the action of rotation of the power and cotton sleeve (45) and cotton brush (44) mutual friction, make cotton sleeve (45) and cotton brush (44) wipe clean HFCT sensor (48).

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