Reactive power compensation device

Abstract

The invention discloses a reactive power compensation device, and relates to the technical field of reactive power compensation, the reactive power compensation device comprises a cabinet, a static var generator and a lock catch assembly, the cabinet is provided with a mounting cavity and a mounting port communicated with the mounting cavity; the lock catch assembly is arranged in the mounting cavity, the lock catch assembly comprises a conductive part and a pushing structure, the conductive part is used for being electrically connected with a power grid, and the pushing structure is arranged in a telescopic mode; the static var generator comprises a generator body and a power connection part, the generator body is located in the installation cavity, the power connection part is electrically connected with the generator body, the power connection part makes contact with the conductive part to be electrically connected, and the pushing structure can push the power connection part so that the power connection part can be separated from the conductive part. According to the technical scheme, the maintenance convenience of the static var generator in the reactive power compensation device can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of reactive power compensation, and in particular to a reactive power compensation device. Background Art

[0002] To compensate for reactive power in various power usage scenarios, a reactive power compensation device is typically installed. The static VAR generator (SVR) and other components of the reactive power compensation device are installed in a cabinet. Furthermore, the SVR needs to be connected to the power grid via electrical connectors within the cabinet. When the SVR fails or requires maintenance, a maintenance technician must manually disconnect the wiring connected to the SVR to power off and remove the SVR. Furthermore, when installing the SVR, the wiring and the SVR must be connected separately, making assembly and disassembly inconvenient. Summary of the Invention

[0003] The main purpose of this application is to propose a reactive power compensation device, aiming to improve the maintenance convenience of a static reactive power generator in the reactive power compensation device.

[0004] To achieve the above objectives, the reactive power compensation device proposed in this application includes: A cabinet, wherein the cabinet is provided with an installation cavity and an installation opening communicating with the installation cavity; a locking assembly, the locking assembly being disposed in the mounting cavity and comprising a conductive member and a pushing structure, the conductive member being used for electrically connecting to a power grid; and A static VAR generator, comprising a generator body and a power connection member, wherein the power connection member is electrically connected to the generator body; The generator body is located in the installation cavity, the power connection piece and the conductive piece are in contact to be electrically connected, and the pushing structure is telescopically arranged to push the power connection piece to separate the power connection piece and the conductive piece.

[0005] The technical solution of this application provides a cabinet with a conductive member for connecting to the power grid, and a static VAR generator with a power connector electrically connected to the generator body. When the static VAR generator is installed in the cabinet's mounting cavity, the power connector and the conductive member on the locking assembly contact each other to form an electrical connection, thereby electrically connecting the generator body of the static VAR generator to the conductive member and completing the power connection process for the static VAR generator. In the event of a malfunction or maintenance of the static VAR generator, a push-up structure can push the power connector away to separate the two members, thereby disconnecting the static VAR generator. This eliminates the need for manual disconnection, improves the maintenance convenience of the static VAR generator, and reduces the risk of electric shock during disassembly and assembly of the static VAR generator.

[0006] In one embodiment, the static VAR generator further includes a lock release assembly, which is connected to the generator body. The power connection piece is provided on the lock release assembly, and the lock release assembly is detachably connected to the lock assembly.

[0007] With this approach, the release assembly is connected to the latch assembly to lock the STATCOM in the cabinet, improving the installation stability of the STATCOM and preventing it from shifting within the cabinet. Furthermore, by arranging the power connection on the release assembly, the STATCOM can be connected to power while the release assembly and latch assembly are connected. When the STATCOM needs to be removed, the release assembly can be simply separated from the latch assembly to unlock the STATCOM and simultaneously disconnect the STATCOM from power. This makes assembly and disassembly of the STATCOM relatively convenient.

[0008] In one embodiment, the lock-release assembly includes a lock-release structure and a drive structure connected to each other, the lock-release structure and the drive structure are movably arranged relative to the generator body, and the power connection member is arranged on the lock-release structure; The generator body and the locking and releasing structure are located in the installation cavity, the driving structure is exposed at the installation opening, and the driving structure is configured to drive the locking and releasing structure to move so as to lock or unlock the locking and releasing structure with the locking assembly.

[0009] By adopting the above solution, when disassembling and assembling the static VAR generator, the lock-release structure and the lock assembly can be locked or unlocked directly by operating the drive structure on the outside of the cabinet, and the drive structure can also be used as a handle to facilitate pulling out the static VAR generator, thereby improving the convenience of disassembling and assembling the static VAR generator.

[0010] In one embodiment, the locking assembly includes a connecting plate, and a locking structure, the conductive member, and the pushing structure are provided on a side of the connecting plate facing away from the mounting opening; The lock-release structure includes an extension rod, the power connection member is provided on the extension rod, and the driving structure is used to drive the extension rod to move to the position where the locking structure is located, or to move it to a position offset from the connection plate; The extension rod is arranged opposite to the pushing end of the pushing structure and can be locked by the locking structure. The pushing structure is configured to push the extension rod out of the locking structure to separate the power connection piece from the conductive piece.

[0011] Using this solution, when the STATCOM generator needs to be locked in the cabinet, the drive structure moves the extension rod on the lock release assembly to the back side of the connecting plate and is locked by the locking structure. At this time, the extension rod is blocked by the connecting plate in the direction of the STATCOM generator's removal from the installation cavity, preventing the STATCOM generator from being removed from the installation cavity. When the STATCOM generator needs to be removed, the drive structure drives the extension rod to separate from the locking structure and move it to a position offset from the connecting plate. The extension rod is no longer blocked by the connecting plate, allowing the STATCOM generator to be removed from the installation cavity. This arrangement makes locking and unlocking the STATCOM generator relatively convenient and provides high stability when locked.

[0012] In one embodiment, the locking structure includes a connecting groove, the conductive member is provided on a groove wall of the connecting groove, at least a portion of the structure of the extension rod can be embedded in the connecting groove, and the driving structure is further used to drive the extension rod toward or away from the generator body so that the extension rod enters and exits the connecting groove; The pushing structure is located at the connecting groove or at the outside of the end of the connecting groove. When the pushing structure is extended, the extension rod can be pushed out of the connecting groove to separate the power connection piece and the conductive piece.

[0013] By adopting the above solution, the extension rod can be embedded in the connecting groove to be locked to the connecting plate, which is conducive to improving the locking strength, reducing the risk of the extension rod being out of the locked state and out of the connecting plate due to misoperation, ensuring stable connection between the power connection part and the conductive part, and ensuring that the static VAR generator is stably installed in the cabinet.

[0014] In one embodiment, the connection plate is provided with a first avoidance hole and a second avoidance hole penetrating both side surfaces, the second avoidance hole and the locking structure are arranged along the circumference of the first avoidance hole, and the second avoidance hole is communicated with the first avoidance hole; The locking and releasing structure also includes a center disk, and the extension rod extends from the edge of the center disk in a direction away from the center disk. The center disk is passed through the first avoidance hole, and the extension rod can pass through the second avoidance hole. The locking and releasing structure can be rotated relative to the connecting disk to move the extension rod to the second avoidance hole or to the connecting groove.

[0015] With this solution, when the STATCOM is locked in the cabinet, the center disc of the release assembly penetrates the first clearance hole provided on the connection disc. This allows the connection disc to limit the release mechanism radially relative to the first clearance hole, preventing the STATCOM from shifting and improving installation stability. To remove the STATCOM, the drive structure rotates the release mechanism, moving the extension rod to the second clearance hole, offsetting it from the connection disc and allowing the STATCOM to freely enter and exit the installation cavity. Alternatively, the extension rod is moved to the connection slot, allowing it to enter the limiting slot and be locked, providing convenient operation.

[0016] In one embodiment, the connecting plate is provided with a guide wedge, the guide wedge is located between the second avoidance hole and the connecting groove, and the thickness of the guide wedge is gradually increased from the second avoidance hole toward the connecting groove.

[0017] By adopting the above scheme, by setting a guide wedge, the risk of the limit rod escaping from the connecting groove and moving to the second avoidance hole can be reduced when the extension rod is limited to the connecting groove. When the static VAR generator needs to be removed, the extension rod can automatically slide along the guide wedge to the second avoidance hole, thereby improving the convenience of removing the static VAR generator.

[0018] In one embodiment, the locking and releasing structure is provided with a plurality of the extension rods, at least one of the extension rods is provided with the power connection piece, the plurality of extension rods are arranged along the circumference of the center disk, the connecting disk is provided with a plurality of the second avoidance holes and a plurality of the connecting grooves, and the plurality of the second avoidance holes and the plurality of the connecting grooves are staggered along the circumference of the connecting disk.

[0019] By adopting the above solution, the connection strength between the lock release assembly and the lock catch assembly can be improved, and the stability of the static VAR generator installed in the cabinet can be improved.

[0020] In one embodiment, the driving structure includes a handle and a connecting rod connected to each other, the handle is exposed at the mounting opening, and the lock-release structure is located on a side of the generator body facing away from the handle; The connecting rod passes through the generator body and is connected to the lock-release structure, and the handle and the connecting rod can rotate relative to the generator body.

[0021] By adopting the above method, the extension rod can be rotated to the connecting groove or to a position misaligned with the connecting disk by directly driving the handle to rotate to drive the locking and releasing structure to rotate. By driving the handle to move along the length direction of the connecting rod to drive the extension rod to pass through the position of the connecting disk, for example, driving the extension rod through the second avoidance hole, there is no need to set up a complex transmission structure between the driving structure and the locking and releasing structure, and the structure is simple.

[0022] In one embodiment, the handle and the connecting rod are movable relative to the generator body along the length direction of the connecting rod; The driving structure further includes a first elastic member, which is sandwiched between the handle and the generator body, and the first elastic member applies an elastic force to the handle away from the generator body.

[0023] Using the above method, when the static VAR generator is locked in the cabinet, the first elastic member applies an elastic force to the handle toward the outside of the installation cavity, so that the handle tightens the lock-release structure, ensuring that the extension rod of the lock-release structure is embedded in the connecting groove, and the extension rod is not easy to fall out of the connecting groove, thereby improving the connection strength and stability.

[0024] In one embodiment, the driving structure further includes a connecting cylinder and a second elastic member, the connecting cylinder being provided with an accommodating cavity and a first communicating hole and a second communicating hole communicating with the accommodating cavity, the first communicating hole being provided at one end of the connecting cylinder facing the generator body, the connecting rod being passed through the first communicating hole and inserted into the accommodating cavity; The second communicating hole is provided on the side wall of the connecting tube and extends along the length direction of the connecting tube, and the handle is passed through the second communicating hole; A limiting portion is protruded from the outer wall of the connecting tube, and the limiting portion is located on the side of the handle facing the generator body. The second elastic member is sleeved on the outside of the connecting tube and clamped between the handle and the limiting portion.

[0025] By adopting the above method, the connecting rod can be protected by the connecting tube. At the same time, the second elastic member can also apply an elastic force to the handle toward the outside of the installation cavity, thereby increasing the pulling force of the handle to tighten the lock-release structure, ensuring that the extension rod of the lock-release structure is embedded in the connecting groove, and improving the connection strength and stability.

[0026] In one embodiment, the driving structure further includes a pushing member, wherein the pushing member is threadedly connected to an end of the connecting tube away from the first communicating hole; One end of the pushing member inserted into the accommodating cavity abuts against the handle, and when the pushing member rotates, the connecting tube is driven to approach or move away from the generator body.

[0027] By adopting the above method, when the extension rod needs to be moved out of the connecting groove, the pushing member can first drive the connecting tube away from the generator body. With this arrangement, when the handle is pressed toward the generator body to push the extension rod out of the connecting groove, the handle, the connecting tube and the second elastic member can be pressed toward the generator body together, without overcoming the resistance of the second elastic member, thereby improving the convenience of disassembly and assembly.

[0028] In one embodiment, the locking assembly further includes a connecting terminal, which is located outside the connecting groove and electrically connected to the conductive member. The connecting terminal is used to electrically connect to the power grid to electrically connect the conductive member to the power grid.

[0029] In this arrangement, the conductive member can be electrically connected to the power grid via the connecting terminal, which is located outside the connecting slot to facilitate wiring.

[0030] In one embodiment, the lock assembly further includes an insulating member, the insulating member being shielded by a notch of the connecting slot, one end of the insulating member being connected to the connecting plate, and the other end being movably disposed; The insulating member is elastic, and the extending rod can move the insulating member to move in and out of the connecting groove.

[0031] By adopting the above method, when the extension rod is embedded in the connection groove, the insulating member can not only limit and protect the extension rod, but also cut off the arc generated when the power connection member and the conductive member are connected and disconnected, thereby extinguishing the arc.

[0032] In one embodiment, a limiting sleeve is provided in the generator body, and the driving structure is passed through the limiting sleeve.

[0033] This arrangement can utilize the limiting sleeve to guide and limit the connecting rod, thereby preventing the drive structure from deflecting during movement along the length of the connecting rod and reducing the risk of bending the connecting rod.

[0034] In one embodiment, the pushing structure is configured as an electromagnet push rod structure.

[0035] By adopting the above-mentioned method, the electromagnetic push rod is easy to control and has a fast response speed, and can quickly separate the power connection part and the conductive part when a fault is detected or power off is required.

[0036] In one embodiment, the reactive power compensation device further includes a fault detection module, which is disposed in the cabinet and configured to send a fault signal upon detecting a fault in the static VAR generator.

[0037] By adopting the above method, the fault state of the static VAR generator can be quickly discovered, so that when a fault occurs, the pushing structure can be promptly controlled to push away the power connection parts to cut off the power and isolate the power supply, thereby achieving rapid response and improving the degree of automation.

[0038] In one embodiment, the reactive power compensation device includes a plurality of static VAR generators.

[0039] This setup improves overall compensation capability and reliability, meeting high-capacity requirements. Multiple STATCOMs can be connected in parallel. In industrial environments with severe harmonics and frequent load fluctuations, the multi-channel parallel structure effectively shares the compensation load, preventing overload on individual devices. Furthermore, if one STATCOM fails, the other parallel STATCOMs can continue to operate.

[0040] In one embodiment, a bearing guide rail is provided in the cabinet, and the bearing guide rail extends from the installation opening to the inner side of the installation cavity, and the generator body is supported by the bearing guide rail.

[0041] This arrangement utilizes the bearing guide rail to define the installation position of the static VAR generator in the installation cavity, and utilizes the bearing guide rail to support the static VAR generator, resulting in a reasonable overall structural arrangement; and the static VAR generator can slide along the bearing guide rail to enter and exit the installation cavity, thereby improving the convenience of assembly and disassembly.

[0042] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, which can be implemented in accordance with the contents of the specification, and to make other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0044] Figure 1 A structural diagram of an embodiment of a reactive power compensation device provided by this application; Figure 2 A partial cross-sectional view of the reactive power compensation device provided in this application; Figure 3 for Figure 2 The reactive power compensation device in the figure makes the connecting tube be away from the generator body; Figure 4 A partial schematic diagram of an extension rod locked in a connection groove in an embodiment of a reactive power compensation device provided by the present application; Figure 5 A structural diagram of the lock assembly in the reactive power compensation device provided in this application; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 for Figure 5 A structural diagram of the middle lock assembly from another perspective; Figure 8 A cross-sectional view of an embodiment of a static VAR generator in a reactive power compensation device provided by the present application; Figure 9 A structural diagram of a static VAR generator in an embodiment of a reactive power compensation device provided by this application; Figure 10 for Figure 9 Another perspective of the static VAR generator structure.

[0045] Description of Figure Numbers: 1000, reactive power compensation device; 100, static VAR generator; 10, generator body; 20, lock release assembly; 21, lock release structure; 211, extension rod; 212, center disk; 22, drive structure; 221, handle; 222, connecting rod; 223, first elastic member; 224, connecting cylinder; 2241, accommodating cavity; 2242, first communicating hole; 2243, second communicating hole; 2244, limiting portion; 225, second elastic member; 226, pushing member; 23, power connection member; 200, cabinet; 201, installation cavity; 202, installation opening; 203, load-bearing guide rail; 300, locking assembly; 301, conductive part; 302, connecting plate; 3021, locking structure; 3022, connecting groove; 3023, first avoidance hole; 3024, second avoidance hole; 3025, guide wedge; 303, pushing structure; 304, connecting terminal; 305, insulating part; 306, connecting part.

[0046] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0047] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0049] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0050] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0051] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0052] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0053] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0054] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0055] To compensate for reactive power in various power usage scenarios, a reactive power compensation device is typically installed. In related art, a static VAR generator (SVR) and other components are installed in a cabinet. The SVR requires wiring within the cabinet to connect it to the power grid via electrical connectors within the cabinet. When the SVR fails or requires maintenance, a maintenance technician must manually disconnect the wiring connected to the SVR to power off and remove the SVR. Furthermore, when installing the SVR, the wiring and the SVR must be connected separately, making assembly and disassembly inconvenient.

[0056] Based on the above considerations, the present application proposes a reactive power compensation device 1000 to solve the problem of inconvenient maintenance of the static VAR generator 100 in the reactive power compensation device 1000 .

[0057] Please refer to Figure 1 and Figure 2 The reactive power compensation device 1000 includes a cabinet 200, a static VAR generator 100 and a locking assembly 300. The cabinet 200 is provided with an installation cavity 201 and an installation opening 202 connected to the installation cavity 201; the locking assembly 300 is arranged in the installation cavity 201, and the locking assembly 300 includes a conductive member 301 and a pushing structure 303. The conductive member 301 is used to electrically connect to the power grid, and the pushing structure 303 is retractable. The static VAR generator 100 includes a generator body 10 and a power connection member 23. The generator body 10 is located in the installation cavity 201, and the power connection member 23 is connected to the generator body 10; the power connection member 23 and the conductive member 301 are in contact to be electrically connected, and the pushing structure 303 can push the power connection member 23 to separate the power connection member 23 and the conductive member 301.

[0058] The cabinet 200 is the supporting base of the reactive power compensation device 1000 and is used to install components such as the static VAR generator 100 and the locking assembly 300. Optionally, the reactive power compensation device 1000 may also include components such as a reactive compensator, a control unit, and a fault detection module. The cabinet 200 generally includes a cabinet body, which is provided with an installation cavity 201 and an installation opening 202 connected to the installation cavity 201. The cabinet body can be a rectangular parallelepiped structure, and the installation opening 202 can be set on the side of the cabinet body to facilitate the disassembly and assembly of components in the installation cavity 201. Optionally, the cabinet 200 may also include a cabinet door, which can be opened and closed at the position of the installation opening 202 and is used to cover the installation opening 202 to protect the components in the installation cavity 201 when there is no need to disassemble or assemble components, and to prevent foreign matter from entering the installation cavity 201.

[0059] A static var generator (SVG) 100, also known as a high-voltage dynamic var compensation generator or static synchronous compensator, can be used to dynamically compensate for reactive power and improve the power factor and voltage stability of power systems. The SVG 100 includes a generator body 10 and a power connector 23 electrically connected to the generator body 10. The generator body 10 is the primary structure of the SVG 100 and integrates electrical components such as, but not limited to, converters, capacitors, and a control system to achieve functions such as dynamic reactive power compensation. The SVG 100 is electrically connected to external devices via the power connector 23. Optionally, the power connector 23 and the generator body 10 can be electrically connected via a wire, conductive sheet, or other conductive structure.

[0060] A conductive member 301 is provided on the latch assembly 300 for electrically connecting to the power grid. When the release assembly 20 and the latch assembly 300 are locked together, the electrical connector 23 contacts the conductive member 301 to establish an electrical connection, thereby electrically connecting the generator body 10 to the power grid. Optionally, the electrical connector 23 can be configured as, but not limited to, a contact sheet, a conductive pin, or a plug, and the conductive member 301 can be configured as, but not limited to, a contact sheet, a conductive pin, or a conductive socket, and the like, without limitation herein.

[0061] The locking assembly 300 is also provided with a push structure 303. The push structure 303 can be configured as, but is not limited to, a push cylinder, a hydraulic cylinder, an electric cylinder, an electromagnet push rod, or other structures. When the STATCOM 100 malfunctions or requires maintenance, the push structure 303 can push the power connector 23 away to separate the power connector 23 from the conductive member 301, thereby powering off the STATCOM 100. This eliminates the need for manual disconnection, improves the ease of assembly and disassembly of the STATCOM 100, and reduces the risk of electric shock during assembly and disassembly of the STATCOM 100.

[0062] Alternatively, the power receiving member 23 can be moved relative to the generator body 10 so that the power receiving member 23 can be pushed away from the conductive member 301 by the pushing structure 303, or a portion of the structure connected to the power receiving member 23 can be moved relative to the generator body 10. For example, when the power receiving member 23 is set in the lock release assembly 20, the pushing structure 303 can push the lock release assembly 20 as a whole or push the portion of the structure connected to the power receiving member 23 to move so that the power receiving member 23 is separated from the conductive member 301. At this time, it can be used to simultaneously release the full or partial locking of the lock release assembly 20 by the lock assembly 300; for example, when the lock release assembly 20 and the lock assembly 300 are connected by a magnetic connection or a snap connection, the pushing structure When 303 pushes away the power connection part 23, the lock release assembly 20 is separated from the lock assembly 300 and the contact locking structure 3021 locks the lock release assembly 20. In some embodiments, the lock release assembly 20 and the generator body 10 can also be pushed at the same time; in addition, as in the embodiment below, when the lock release assembly 300 includes a connecting disk 302 provided with a connecting groove 3022, the pushing structure 303 can push the extension rod 211 of the lock release assembly 20 out of the connecting groove 3022 to separate the power connection part 23 from the conductive part 301, but at this time, in the direction of the electrostatic reactive generator exiting the installation cavity 201, the extension rod 211 will still be blocked and limited by the connecting disk 302, and the lock release assembly 20 cannot be completely separated from the lock of the connecting disk 302.

[0063] That is, the technical solution of the present application provides a conductive member 301 for connecting to the power grid in the cabinet 200, and a power connector 23 electrically connected to the generator body 10 is provided on the STATCOM 100. When the STATCOM 100 is installed in the installation cavity 201 of the cabinet 200, the power connector 23 and the conductive member 301 on the locking assembly 300 contact each other to form an electrical connection, thereby electrically connecting the generator body 10 of the STATCOM 100 to the conductive member 301, thereby achieving power connection processing for the STATCOM 100. When the STATCOM 100 fails or requires maintenance, the pushing structure 303 can push the power connector 23 away to separate the power connector 23 and the conductive member 301, thereby disconnecting the STATCOM 100 from the power supply. This eliminates the need for manual disconnection, improves the maintenance convenience of the STATCOM 100, and reduces the risk of electric shock during the disassembly and assembly of the STATCOM 100.

[0064] Combined with reference Figure 1 and Figure 2 In one embodiment, the static VAR generator 100 further includes a release assembly 20 , which is connected to the generator body 10 . The release assembly 20 is provided with a power connection piece 23 , and the release assembly 20 is detachably connected to the lock assembly 300 .

[0065] In this embodiment, the release assembly 20 is configured to cooperate with the latch assembly 300 installed in the cabinet 200. The release assembly 20 can be connected to the latch assembly 300 to lock the static VAR generator 100 in the installation cavity 201. Optionally, the release assembly 20 and the latch assembly 300 can be configured as, but not limited to, a magnetic structure, a snap-fit connection structure, or a position-limiting mating structure of the connecting plate 302 and the extension rod 211 described in the embodiments below. When the static VAR generator 100 needs to be removed from the installation cavity 201, it is only necessary to unlock the release assembly 20 and the latch assembly 300. Optionally, the installation opening 202 is located on the front side of the static VAR generator 100 for illustration. The release assembly 20 and the latch assembly 300 can be located on the rear side of the generator body 10, or can be arranged on the left or right side of the generator body 10.

[0066] The power connection member 23 is provided on the lock release assembly 20, which allows the STATCOM 100 to be powered while the lock release assembly 20 is connected to the lock catch assembly 300. When the STATCOM 100 needs to be removed, the lock release assembly 20 and the lock catch assembly 300 are separated to release the lock on the STATCOM 100, and the STATCOM 100 can also be powered off, making the disassembly and assembly of the STATCOM 100 more convenient.

[0067] Combined with reference Figure 1 and Figure 2 In one embodiment, the locking assembly 20 includes a locking structure 21 and a driving structure 22 connected to each other. The locking structure 21 and the driving structure 22 are movably arranged relative to the generator body 10. The power connection part 23 is arranged on the locking structure 21, and the conductive part 301 is arranged on the locking structure 3021; the generator body 10 and the locking structure 21 are located in the installation cavity 201, and the driving structure 22 is exposed at the installation port 202. The driving structure 22 is configured to drive the locking structure 21 to move so that the locking structure 21 and the lock assembly 300 are locked or unlocked.

[0068] In this embodiment, the lock release assembly 20 includes a lock release structure 21 for locking with the lock assembly 300, and a drive structure 22 for driving the lock release structure 21 to move. The drive structure 22 can drive the lock release structure 21 toward or away from the lock assembly 300 to lock or unlock the lock release structure 21 with the lock release structure 21. The drive structure 22 can be directly connected to the lock release structure 21 to drive the lock release structure 21 to move synchronously when the drive structure 22 moves. For example, when the drive structure 22 rotates, the lock release structure 21 rotates, and when the drive structure 22 moves in the direction of the electrostatic reactive power generator entering and exiting the installation cavity 201, the lock release structure 21 moves in the same direction. In some embodiments, the drive structure 22 and the lock release structure 21 can also be connected by a transmission structure. For example, a transmission structure such as, but not limited to, a gear set, a gear rack module, a connecting rod 222 module, etc. can be provided to connect the drive structure 22 and the lock release structure 21. The lock release structure 21 can also be driven by operating the drive structure 22.

[0069] Among them, when the electrostatic VAR generator is placed in the installation cavity 201, the locking and releasing structure 21 is located in the installation cavity 201 to correspond to the locking assembly 300, and the driving structure 22 is exposed at the installation opening 202. When disassembling the static VAR generator 100, the locking and releasing structure 21 and the locking assembly 300 can be locked or unlocked directly on the outside of the cabinet 200 by operating the driving structure 22, and the driving structure 22 can also be used as a handle to facilitate pulling out the static VAR generator 100, thereby improving the convenience of disassembly and assembly of the static VAR generator 100.

[0070] Please refer to Figure 2 and Figure 4 In one embodiment, the locking assembly 300 includes a connecting disk 302, and a locking structure 3021, a conductive member 301 and a pushing structure 303 are provided on the side of the connecting disk 302 facing away from the installation port 202. The lock-release structure 21 includes an extension rod 211, and the power connection member 23 is provided on the extension rod 211; the driving structure 22 is used to drive the extension rod 211 to move to the position of the locking structure 3021, or to move it to a position offset from the connecting disk 302. The extension rod 211 is arranged opposite to the pushing end of the pushing structure 303 and can be locked by the locking structure 3021. The pushing structure 303 is configured to push the extension rod 211 out of the locking structure 3021, so that the power connection member 23 is separated from the conductive member 301.

[0071] In this embodiment, the locking assembly 300 includes a connecting plate 302, the surface of the connecting plate 302 facing away from the installation opening 202 is spaced apart from the inner wall of the cabinet 200 facing the installation opening 202 to form a movable space; the locking release structure 21 includes an extension rod 211, and the driving structure 22 can at least drive the extension rod 211 to slide or rotate along a plane parallel to the connecting plate 302, so that the extension rod 211 can be moved to the side of the connecting plate 302 facing away from the installation opening 202 under the drive of the driving structure 22, or can be moved to a position offset from the connecting plate 302. Specifically, when the extension rod 211 is located on the side of the connecting plate 302 facing away from the installation opening 202, the extension rod 211 is blocked and limited by the connecting plate 302 in the direction in which the static VAR generator 100 is moved out of the installation cavity 201, thereby preventing the static VAR generator 100 from being removed from the installation cavity 201. When the extension rod 211 is moved to a position offset from the connection plate 302, the extension rod 211 will not be blocked by the connection plate 302 in the direction in which the static VAR generator enters and exits the installation cavity 201, so that the static VAR generator 100 can freely enter and exit the installation cavity 201. Optionally, the extension rod 211 is positioned offset from the connection plate 302, which can be achieved by positioning the extension rod 211 in an outer area of the edge of the connection plate 302, or by providing a second avoidance hole 3024 on the connection plate 302. When the extension rod 211 is moved to correspond to the second avoidance hole 3024, it is also offset from the connection plate 302 and will not be blocked by the connection plate 302 in the direction in which the static VAR generator enters and exits the installation cavity 201.

[0072] At the same time, a locking structure 3021 is provided on the side of the connecting plate 302 facing away from the mounting opening 202. The locking structure 3021 can be configured as, but is not limited to, at least one of a connecting groove 3022, a magnetic structure, and a snap-fit structure. When the electrostatic reactive generator needs to be locked, the extension rod 211 is located on the side of the connecting plate 302 facing away from the mounting opening 202 and is locked by the locking structure 3021, thereby preventing the extension rod 211 from moving to a position misaligned with the connecting plate 302, thereby improving the locking strength and stability of the electrostatic reactive generator. The power connector 23 is disposed on the extension rod 211, with at least a portion of the power connector 23 located on the surface of the extension rod 211. The conductive member 301 is disposed on the side of the connecting plate 302 facing away from the mounting opening 202 and is configured corresponding to the locking structure 3021. Therefore, when the extension rod 211 is locked by the locking structure 3021, the power connector 23 can contact the conductive member 301.

[0073] Optionally, the pushing structure 303 is used to push the extension rod 211 away from the locking structure 3021, and can be used to push the extension rod 211 to move along the surface of the connecting disk 302; in some embodiments, the extension rod 211 can also move in the direction of the electrostatic reactive generator entering and exiting the installation cavity 201. At this time, the pushing structure 303 can be used to push the extension rod 211 along the direction of the electrostatic reactive generator entering the installation cavity 201 in accordance with the connecting disk 302.

[0074] Optionally, the latch assembly 300 may further include a connector 306, which is located on the side of the connection plate 302 facing away from the mounting opening 202. The end of the connector 306 facing away from the connection plate 302 is connected to the cabinet 200, thereby securing the connection plate 302 in the cabinet 200 while allowing the side of the connection plate 302 facing away from the mounting opening 202 to have room for movement. The connector 306 may be configured in, but is not limited to, a plate-shaped or rod-shaped structure. In some embodiments, the edge of the connection plate 302 may be extended to the top wall, bottom wall, or at least one side wall of the cabinet 200 located on both sides of the mounting opening 202, thereby securing the connection plate 302 in the cabinet 200 while allowing the side of the connection plate 302 facing away from the mounting opening 202 to have room for movement.

[0075] That is, using the above solution, when the STATCOM 100 needs to be locked in the cabinet 200, the extension rod 211 on the lock release assembly 20 is moved to the back side of the connecting plate 302 by the driving structure 22 and locked by the locking structure 3021. At this time, the extension rod 211 is blocked by the connecting plate 302 in the direction of moving the STATCOM 100 out of the installation cavity 201, thereby preventing the STATCOM 100 from being removed from the installation cavity 201. When the STATCOM 100 needs to be removed, the driving structure 22 drives the extension rod 211 to separate from the locking structure 3021 and move the extension rod 211 to a position offset from the connecting plate 302. The extension rod 211 is no longer blocked by the connecting plate 302, allowing the STATCOM 100 to be removed from the installation cavity 201. This arrangement makes locking and unlocking the STATCOM 100 relatively convenient and provides high stability when locked.

[0076] Combined with reference Figures 4 to 6 In one embodiment, the locking structure 3021 includes a connecting groove 3022, the conductive member 301 is arranged on the groove wall of the connecting groove 3022, at least part of the structure of the extension rod 211 can be embedded in the connecting groove 3022, and the driving structure 22 is also used to drive the extension rod 211 close to or away from the generator body 10, so that the extension rod 211 enters and exits the connecting groove 3022; the pushing structure 303 is located in the connecting groove 3022 or on the outside of the end of the connecting groove 3022. When the pushing structure 303 is extended, the extension rod 211 can be pushed outward from the connecting groove 3022 to separate the power connection member 23 and the conductive member 301.

[0077] In this embodiment, the locking structure 3021 includes an extension rod 211 that can be inserted into the connection groove 3022 to lock with the connection plate 302. This improves locking strength and reduces the risk of the extension rod 211 being released from the locked state and the connection plate 302 due to misoperation, thereby ensuring a stable connection between the power connection member 23 and the conductive member 301 and ensuring that the static VAR generator 100 is stably installed in the cabinet 200. Specifically, when the conductive member 301 is positioned in the connection groove 3022 and the extension rod 211 is inserted into the connection groove 3022, the power connection member 23 and the conductive member 301 are brought into contact. The pushing end of the pushing structure 303 is positioned away from the mounting opening 202. When the pushing structure 303 is extended, the extension rod 211 is pushed outward from the connection groove 3022, thereby separating the power connection member 23 and the conductive member 301.

[0078] Optionally, the locking structure 3021 may further include other connecting structures for further locking the extension rod 211 when the extension rod 211 is located in the connecting slot 3022. For example, the locking structure 3021 may include a magnet disposed in the connecting slot 3022, the extension rod 211 may be configured to be attracted by a material that can be attracted by the magnet, or a magnet may be disposed on the extension rod 211 so that the extension rod 211 is magnetically fixed when located in the connecting slot 3022, thereby further improving the stability of the extension rod 211 in the connecting slot 3022. In some embodiments, the locking structure 3021 may also include, but is not limited to, a snap-fit structure.

[0079] Please refer to Figure 5 and Figure 7 In one embodiment, the connecting disk 302 is provided with a first avoidance hole 3023 and a second avoidance hole 3024 that pass through the two side surfaces. The second avoidance hole 3024 and the locking structure 3021 are arranged along the circumference of the first avoidance hole 3023, and the second avoidance hole 3024 is connected to the first avoidance hole 3023; the lock-release structure 21 also includes a center disk 212, and the extension rod 211 extends from the edge of the center disk 212 in a direction away from the center disk 212. The center disk 212 is penetrated by the first avoidance hole 3023, and the extension rod 211 can pass through the second avoidance hole 3024. The lock-release structure 21 can rotate relative to the connecting disk 302 to move the extension rod 211 to the second avoidance hole 3024 or to the connecting groove 3022.

[0080] In this embodiment, when the STATCOM 100 is locked in the cabinet 200, the center disk 212 of the lock release assembly 20 is inserted into the first avoidance hole 3023 provided on the connection disk 302. Thus, the connection disk 302 can be used to limit the lock release structure 21 in the radial direction of the first avoidance hole 3023, thereby preventing the STATCOM 100 from being misaligned and improving installation stability. When the STATCOM 100 needs to be installed or removed, the drive structure 22 drives the lock release structure 21 to rotate, causing the extension rod 211 to move to the position of the second avoidance hole 3024, thereby offsetting it from the connection disk 302, allowing the STATCOM 100 to freely enter and exit the installation cavity 201. Alternatively, the extension rod 211 is driven to move to the position of the connection slot 3022, allowing the extension rod 211 to enter the limiting slot and be locked, thus conveniently operating.

[0081] Please refer to Figure 5 and Figure 6 In one embodiment, the connecting plate 302 is provided with a guide wedge 3025, and the guide wedge 3025 is located between the second avoidance hole 3024 and the connecting groove 3022, and the thickness of the guide wedge 3025 is gradually increased from the second avoidance hole 3024 to the connecting groove 3022.

[0082] In this embodiment, by providing a guide wedge 3025, the risk of the limiting rod 211 escaping from the connecting groove 3022 and moving to the second avoidance hole can be reduced when the extension rod 211 is limited to the connecting groove 3022. When the static VAR generator 100 needs to be removed, the extension rod 211 can automatically slide along the guide wedge 3025 to the second avoidance hole 3024, thereby improving the convenience of removing the static VAR generator 100.

[0083] In addition, in some embodiments, the driving structure 22 includes at least a handle 221, a connecting rod 222, and a first elastic member 223. The handle 221 is connected to the lock-release structure 21 through the connecting rod 222. The first elastic member 223 is sandwiched between the handle 221 and the generator body 10 and is used to apply elastic force to the handle 221 to tighten the lock-release structure 21. By setting the guide wedge 3025, the driving handle 221 rotates to drive the extension rod 211 to rotate to the connecting groove 3022. The extension rod 211 moves along the guide wedge 3025. 025 slides, thereby causing the extension rod 211 to drive the handle 221 to move toward the inside of the installation cavity 201, so that the handle 221 compresses the first elastic member 223, and by providing the guide wedge block 3025, the thickness of the connection groove 3022 is increased, and the compression length of the first elastic member 223 is increased, thereby increasing the elastic force of the first elastic member 223 and the pushing force on the handle 221, so that the handle 221 applies a greater tensioning force to the extension rod 211, ensuring that the extension rod 211 is stably limited in the connection groove 3022. Optionally, the driving structure 22 is further provided with a second elastic member 225. The setting method of the second elastic member 225 refers to the embodiment below. The setting of the guide wedge block 3025 can also be such that when the extension rod 211 rotates to the connecting groove 3022, the extension rod 211 slides along the guide wedge block 3025, so that the extension rod 211 drives the handle 221 to move toward the inside of the installation cavity 201, so that the handle 221 compresses the second elastic member 225, which can increase the elastic force of the second elastic member 225 and the pushing force on the handle 221.

[0084] Optionally, in the following embodiment, the connecting plate 302 is provided with a plurality of second avoidance holes and a plurality of connecting grooves 3022 , so that one second avoidance hole and one connecting groove 3022 are provided correspondingly, and a guide wedge 3025 is provided between the paired second avoidance holes and connecting grooves 3022 .

[0085] Combined with reference Figure 2 、 Figure 5 as well as Figure 9 In one embodiment, the locking and releasing structure 21 is provided with a plurality of extension rods 211, at least one extension rod 211 is provided with a power connection part 23, the plurality of extension rods 211 are arranged along the circumference of the center disk 212, and the connecting disk 302 is provided with a plurality of second avoidance holes 3024 and a plurality of connecting grooves 3022, and the plurality of second avoidance holes 3024 and the plurality of connecting grooves 3022 are staggered along the circumference of the connecting disk 302.

[0086] In this embodiment, multiple extension rods 211 and multiple connecting grooves 3022 are matched one by one, so that when the lock release structure 21 is locked to the connecting plate 302, the connection strength between the lock release assembly 20 and the lock assembly 300 is improved, thereby improving the stability of the static VAR generator 100 installed in the cabinet 200.

[0087] Typically, an electrostatic reactive power generator includes a positive electrode connection piece 23 and a negative electrode connection piece 23. Optionally, the positive electrode connection piece 23 and the negative electrode connection piece 23 can be arranged on the same extension rod 211; or the positive electrode connection piece 23 and the negative electrode connection piece 23 can be arranged on different extension rods 211.

[0088] Please refer to Figure 2 and Figure 8 In one embodiment, the driving structure 22 includes a handle 221 and a connecting rod 222 connected to each other, the handle 221 is exposed at the mounting port 202, and the lock-release structure 21 is located on the side of the generator body 10 facing away from the handle 221; the connecting rod 222 passes through the generator body 10 and is connected to the lock-release structure 21, and the handle 221 and the connecting rod 222 can rotate relative to the generator body 10.

[0089] In this embodiment, the connecting rod 222 of the driving mechanism 22 passes through the generator body 10 and is directly connected to the release mechanism 21. The handle 221 of the driving mechanism 22 is exposed at the mounting opening 202 for user operation. The release mechanism 20 can rotate relative to the generator body 10 and move along the length of the connecting rod 222. When the control handle 221 is rotated, the handle 221 drives the release mechanism 21 to rotate synchronously via the connecting rod 222, causing the extension rod 211 of the release mechanism 21 to rotate to the position where the locking structure 3021 is located, or to rotate to a position offset from the connecting plate 302. When the handle 221 is driven to move along the length of the connecting rod 222 (i.e., the direction in which the electrostatic reactive power generator enters and exits the mounting cavity 201), the connecting rod 222 drives the extension rod 211 to move in the same direction, driving the extension rod 211 into and out of the connecting slot 3022 or passing the position where the connecting plate 302 is located, for example, driving the extension rod 211 through the second avoidance hole 3024. This arrangement does not require a complex transmission structure between the driving structure 22 and the locking and releasing structure 21 , and the structure is simple.

[0090] Alternatively, only the handle 221 and the connecting rod 222 may be rotatably arranged relative to the generator body 10, so that the handle 221 and the connecting rod 222 can drive the extension rod 211 to rotate. When the handle 221 and the connecting rod 222 drive the extension rod 211 to move along the length of the connecting rod 222, the generator body 10 is simultaneously driven to move in the same direction. Alternatively, the handle 221 and the connecting rod 222 may be movable relative to the generator body 10 along the length of the connecting rod 222. When the handle 221 and the connecting rod 222 drive the extension rod 211 to move along the length of the connecting rod 222 to enter and exit the connecting groove 3022, the generator body 10 does not move.

[0091] Please refer to Figure 2 and Figure 8In one embodiment, the handle 221 and the connecting rod 222 can move relative to the generator body 10 along the length direction of the connecting rod 222; the driving structure 22 also includes a first elastic member 223, which is clamped between the handle 221 and the generator body 10, and the first elastic member 223 applies an elastic force to the handle 221 away from the generator body 10.

[0092] In this embodiment, the handle 221 and the connecting rod 222 are movable relative to the generator body 10 along the length of the connecting rod 222. A first elastic member 223 is disposed between the handle 221 and the generator body 10. The first elastic member 223 can be configured as a spring, an elastic airbag, or other structures. With this arrangement, when the static VAR generator 100 is locked in the cabinet 200, the first elastic member 223 applies an elastic force toward the outside of the mounting cavity 201 to the handle 221, thereby causing the handle 221 to tighten the lock-release structure 21, ensuring that the extension rod 211 of the lock-release structure 21 is embedded in the connecting groove 3022. The extension rod 211 is not easily dislodged from the connecting groove 3022, thereby improving the connection strength and stability.

[0093] Please refer to Figure 2 、 Figure 8 as well as Figure 10 In one embodiment, the driving structure 22 further includes a connecting tube 224 and a second elastic member 225. The connecting tube 224 is provided with a accommodating chamber 2241 and a first communicating hole 2242 and a second communicating hole 2243 communicating with the accommodating chamber 2241. The first communicating hole 2242 is provided at one end of the connecting tube 224 facing the generator body 10, and the connecting rod 222 is passed through the first communicating hole 2242 and inserted into the accommodating chamber 2241; the second communicating hole 2243 is provided on the side wall of the connecting tube 224 and extends along the length direction of the connecting tube 224, the handle 221 is passed through the second communicating hole 2243, and a limiting portion 2244 is convexly provided on the outer wall of the connecting tube 224, and the limiting portion 2244 is located on the side of the handle 221 facing the generator body 10; the second elastic member 225 is sleeved on the outside of the connecting tube 224 and clamped between the handle 221 and the limiting portion 2244.

[0094] In this embodiment, the driving structure 22 is provided with a connecting cylinder 224, which abuts against the generator body 10. Optionally, the connecting cylinder 224 may only abut against the generator body 10, or the connecting cylinder 224 may be connected to the generator body 10. The connecting cylinder 224 is open at one end facing the generator body 10 to form a first communicating hole 2242 for the connecting rod 222 to pass through. The end of the connecting rod 222 connected to the handle 221 is inserted into the accommodating cavity 2241 of the connecting cylinder 224. Part of the structure of the handle 221 is exposed outside the connecting cylinder 224 through a second communicating hole 2243 on the side wall of the connecting cylinder 224, making it easier for the user to hold and operate.

[0095] In addition, a limiting portion 2244 is provided on the outer side of the connecting tube 224, and the limiting portion 2244 is located on the side of the handle 221 facing the generator body 10. The limiting portion 2244 can be located at the end where the first connecting hole 2242 is located, or can be located in the middle of the connecting tube 224; a second elastic member 225 is provided which is sleeved on the outer side of the connecting tube 224, and the second elastic member 225 is clamped between the limiting portion 2244 and the handle 221; with such a configuration, the second elastic member 225 can apply an elastic force toward the outside of the mounting cavity 201 to the handle 221, thereby increasing the pulling force of the handle 221 to tighten the locking structure 21, so as to ensure that the extension rod 211 of the locking structure 21 is embedded in the connecting groove 3022 when the extension rod 211 is embedded in the connecting groove 3022, thereby improving the connection strength and stability.

[0096] In some embodiments, the driving structure 22 also includes a first elastic member 223, which is disposed in the accommodating cavity 2241 and clamped between the handle 221 and the generator body 10; this arrangement allows the first elastic member 223 and the second elastic member 225 to simultaneously apply an elastic force toward the outside of the mounting cavity 201 to the handle 221, thereby increasing the pulling force of the handle 221 to tighten the locking and releasing structure 21, and the connecting tube 224 can protect the first elastic member 223.

[0097] Combined with reference Figure 2 and Figure 3 In one embodiment, the driving structure 22 further includes a pushing member 226, which is threadedly connected to one end of the connecting tube 224 away from the first communicating hole 2242. One end of the pushing member 226 inserted into the accommodating cavity 2241 abuts against the handle 221. When the pushing member 226 rotates, it drives the connecting tube 224 closer to or away from the generator body 10.

[0098] In this embodiment, a threaded hole is provided at one end of the connecting tube 224 away from the first communicating hole 2242, and a push member 226 is threadedly engaged with the threaded hole, thereby connecting the push member 226 to the connecting tube 224 and enabling relative movement of the push member 226 and the connecting tube 224 along their length. One end of the push member 226 is inserted into the accommodating cavity 2241 and abuts against the handle 221. With this arrangement, when the push member 226 is rotated to move relative to the connecting tube 224 toward the generator body 10, the push member 226 is blocked by the handle 221, effectively forcing the connecting tube 224 to move away from the generator body 10.

[0099] Using the above-described method, when the extension rod 211 needs to be removed from the connecting groove 3022, the pushing member 226 can first be used to drive the connecting tube 224 away from the generator body 10. With this arrangement, when the handle 221 is pressed toward the generator body 10 to push the extension rod 211 out of the connecting groove 3022, the handle 221, the connecting tube 224, and the second elastic member 225 can be pressed toward the generator body 10 together, eliminating the need to overcome the elastic force of the second elastic member 225, thereby improving the convenience of assembly and disassembly. Optionally, the driving structure 22 may further include a first elastic member 223. When the pushing member 226 drives the connecting tube 224 away from the generator body 10, when the handle 221 is pushed toward the generator body 10, only the elastic force of the first elastic member 223 needs to be overcome, and the elastic force of the second elastic member 225 does not need to be overcome.

[0100] Please refer to Figure 5 and Figure 6 In one embodiment, the locking assembly 300 further includes a connecting terminal 304, which is located outside the connecting groove 3022 and is electrically connected to the conductive member 301. The connecting terminal 304 is used to electrically connect to the power grid to electrically connect the conductive member 301 to the power grid.

[0101] In this configuration, the conductive member 301 can be electrically connected to the power grid via the connecting terminal 304 , which is located outside the connecting slot 3022 for easy connection.

[0102] In one embodiment, the locking assembly 300 also includes an insulating member 305, which is blocked in the slot of the connecting slot 3022. One end of the insulating member 305 is connected to the connecting plate 302, and the other end is movably arranged; the insulating member 305 is elastic, and the extension rod 211 can move the insulating member 305 to enter and exit the connecting slot 3022.

[0103] Using the above arrangement, when the extension rod 211 is embedded in the connection slot 3022, the insulating member 305 can be used to limit and protect the extension rod 211. It can also cut off the arc generated when the power connector 23 and the conductive member 301 are connected and disconnected, thus extinguishing the arc. As the extension rod 211 moves in and out of the connection slot 3022, the extension rod 211 pushes the insulating member 305, deforming it so that it no longer obstructs the extension rod 211. After the extension rod 211 has exited or entered the connection slot 3022, the extension rod 211 returns to its original position, blocking the notch of the connection slot 3022. Optionally, the insulating member 305 can be made of, but is not limited to, acrylic, rubber, or the like. Optionally, a single insulating member 305 can be positioned at the notch of the connection slot 3022, or two insulating members 305 can be positioned side by side, one connected to each side of the connection slot 3022.

[0104] In one embodiment, a limiting sleeve is provided in the generator body 10, and the driving structure 22 is passed through the limiting sleeve.

[0105] In this embodiment, the limiting sleeve is configured as a cylindrical structure with both ends passed through, and the driving structure 22 is passed through the limiting sleeve. For example, the connecting rod 222 in the previous embodiment is passed through the limiting sleeve, so that the limiting sleeve can be used to guide and limit the connecting rod 222, thereby avoiding the driving structure 22 from deflecting during the movement along the length direction of the connecting rod 222, and also reducing the risk of bending of the connecting rod 222.

[0106] In one embodiment, the pushing structure 303 is configured as an electromagnet push rod structure.

[0107] In this embodiment, the electromagnet push rod is easy to control and has a fast response speed, and can quickly separate the power connection member 23 and the conductive member 301 when a fault is detected or power needs to be cut off.

[0108] In one embodiment, the reactive power compensation device 1000 further includes a fault detection module, which is disposed in the cabinet 200 and is configured to send a fault signal upon detecting a fault in the static VAR generator 100 .

[0109] By adopting the above method, the fault state of the static VAR generator 100 can be quickly discovered, and the fault signal can be fed back to the control system when a fault occurs, so that the control system can promptly control the pushing structure 303 to push the power connection part 23 to cut off the power and isolate it, thereby achieving rapid response and improving the degree of automation.

[0110] In the following embodiments, when the reactive power compensation device 1000 is provided with a plurality of static VAR generators 100, the fault detection module can also be used to detect which static VAR generator 100 has failed, so as to quickly locate and identify the faulty static VAR generator 100, thereby accurately disassembling and maintaining the faulty static VAR generator 100, thereby improving maintenance convenience.

[0111] Please refer to Figure 1 In one embodiment, the reactive power compensation device 1000 includes a plurality of static VAR generators 100 .

[0112] This configuration improves overall compensation capability and reliability, meeting high-capacity requirements. Multiple STATCOMs 100 can be connected in parallel. In industrial environments with severe harmonics and frequent load fluctuations, the multi-parallel structure effectively shares compensation tasks, preventing overload on individual devices. Furthermore, if one STATCOM 100 fails, the other parallel STATCOMs 100 can continue to operate.

[0113] Please refer to Figure 1In one embodiment, a bearing guide rail 203 is provided in the cabinet 200 , and the bearing guide rail 203 extends from the installation opening 202 to the inner side of the installation cavity 201 , and the generator body 10 is supported on the bearing guide rail 203 .

[0114] This arrangement utilizes the support rails 203 to define the installation position of the STATCOM 100 within the installation cavity 201 and supports the STATCOM 100, resulting in a rational overall structural arrangement. Furthermore, the STATCOM 100 can slide along the support rails 203 to enter and exit the installation cavity 201, improving assembly and disassembly convenience. Optionally, at least two support rails 203 can be arranged side by side to support the same STATCOM 100. Alternatively, a support plate can be provided between two adjacent support rails 203 to support the STATCOM 100, both of which can improve bearing strength and stability.

[0115] Optionally, when the reactive power compensation device 1000 is provided with a plurality of static VAR generators 100, a plurality of sets of load-bearing guide rails 203 can be provided to respectively carry the plurality of static VAR generators 100. The plurality of sets of load-bearing guide rails 203 can be arranged along the height direction of the cabinet 200, or can be arranged in an array along the width direction and height direction of the cabinet 200, which is not limited here.

[0116] The above description is merely an exemplary embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A reactive power compensation device, characterized in that: include: A cabinet, wherein the cabinet is provided with an installation cavity and an installation opening communicating with the installation cavity; a locking assembly, the locking assembly being disposed in the mounting cavity and comprising a conductive member and a pushing structure, the conductive member being used for electrically connecting to a power grid; and A static VAR generator, comprising a generator body and a power connection member, wherein the power connection member is electrically connected to the generator body; The generator body is located in the installation cavity, the power connection piece and the conductive piece are in contact to be electrically connected, and the pushing structure is telescopically arranged to push the power connection piece to separate the power connection piece and the conductive piece.

2. The reactive power compensation device according to claim 1, characterized in that: The static VAR generator further includes a lock release assembly, which is connected to the generator body. The power connection piece is provided on the lock release assembly, and the lock release assembly is detachably connected to the lock assembly.

3. The reactive power compensation device according to claim 2, characterized in that: The lock-release assembly includes a lock-release structure and a drive structure connected to each other, wherein the lock-release structure and the drive structure are movably arranged relative to the generator body, and the power connection member is arranged on the lock-release structure; The locking and releasing structure is located in the installation cavity, the driving structure is exposed at the installation opening, and the driving structure is configured to drive the locking and releasing structure to move so as to lock or unlock the locking and releasing structure with the locking assembly.

4. The reactive power compensation device according to claim 3, characterized in that: The locking assembly includes a connecting plate, and a locking structure, the conductive member, and the pushing structure are provided on a side of the connecting plate facing away from the mounting opening; The lock-release structure includes an extension rod, the power connection member is provided on the extension rod, and the driving structure is used to drive the extension rod to move to the position where the locking structure is located, or to move it to a position offset from the connection plate; The extension rod is arranged opposite to the pushing end of the pushing structure, and the pushing structure is configured to push the extension rod away from the locking structure, so that the power connection member is separated from the conductive member.

5. The reactive power compensation device according to claim 4, characterized in that: The locking structure includes a connecting groove, the conductive member is provided on the groove wall of the connecting groove, at least a portion of the extension rod is embedded in the connecting groove, and the driving structure is further used to drive the extension rod toward or away from the generator body so that the extension rod enters and exits the connecting groove; The pushing structure is located at the connecting groove or at the outside of the end of the connecting groove. When the pushing structure is extended, the extension rod can be pushed out of the connecting groove to separate the power connection piece and the conductive piece.

6. The reactive power compensation device according to claim 5, characterized in that: The connecting plate is provided with a first avoidance hole and a second avoidance hole penetrating through both side surfaces, the second avoidance hole and the locking structure are arranged along the circumference of the first avoidance hole, and the second avoidance hole is communicated with the first avoidance hole; The lock-release structure further includes a center disk, the extension rod extends from the edge of the center disk in a direction away from the center disk, the center disk is passed through the first avoidance hole, and the extension rod can pass through the second avoidance hole; The locking and releasing structure can rotate relative to the connecting disk to move the extension rod to the second avoidance hole or to the connecting groove.

7. The reactive power compensation device according to claim 6, characterized in that: The connecting plate is provided with a guide wedge, the guide wedge is located between the second avoidance hole and the connecting groove, and the thickness of the guide wedge is gradually increased from the second avoidance hole to the connecting groove; And / or, the locking and releasing structure is provided with a plurality of the extension rods, at least one of the extension rods is provided with the power connection part, the plurality of extension rods are arranged along the circumference of the center disk, the connecting disk is provided with a plurality of the second avoidance holes and a plurality of the connecting grooves, and the plurality of the second avoidance holes and the plurality of the connecting grooves are staggered along the circumference of the connecting disk.

8. The reactive power compensation device according to claim 5, characterized in that: The driving structure includes a handle and a connecting rod connected to each other, the handle is exposed at the mounting opening, and the lock-release structure is located on a side of the generator body facing away from the handle; The connecting rod passes through the generator body and is connected to the lock-release structure, and the handle and the connecting rod can rotate relative to the generator body.

9. The reactive power compensation device according to claim 8, characterized in that: Along the length direction of the connecting rod, the handle and the connecting rod can move relative to the generator body; The driving structure further includes a first elastic member, which is sandwiched between the handle and the generator body, and the first elastic member applies an elastic force to the handle away from the generator body.

10. The reactive power compensation device according to claim 8, characterized in that: The driving structure further includes a connecting cylinder and a second elastic member; The connecting tube is provided with a receiving cavity and a first communicating hole and a second communicating hole communicating with the receiving cavity, wherein the first communicating hole is provided at one end of the connecting tube facing the generator body, and the connecting rod is passed through the first communicating hole and inserted into the receiving cavity; The second communicating hole is provided on the side wall of the connecting tube and extends along the length direction of the connecting tube, and the handle is passed through the second communicating hole; A limiting portion is protruded from the outer wall of the connecting tube, and the limiting portion is located on the side of the handle facing the generator body. The second elastic member is sleeved on the outside of the connecting tube and clamped between the handle and the limiting portion.

11. The reactive power compensation device according to claim 10, characterized in that: The driving structure further includes a pushing member, wherein the pushing member is threadedly connected to an end of the connecting tube away from the first communicating hole; One end of the pushing member inserted into the accommodating cavity abuts against the handle, and when the pushing member rotates, the connecting tube is driven to approach or move away from the generator body.

12. The reactive power compensation device according to claim 5, characterized in that: The lock assembly further includes a connecting terminal, the connecting terminal being located outside the connecting slot and electrically connected to the conductive member, the connecting terminal being used to electrically connect to the power grid so as to electrically connect the conductive member to the power grid; And / or, the lock assembly further includes an insulating member, the insulating member blocking the notch of the connecting groove, one end of the insulating member being connected to the connecting plate, and the other end being movably arranged, the insulating member being elastic, and the extension rod being able to move the insulating member to enter and exit the connecting groove; And / or, a limiting sleeve is provided in the generator body, and the driving structure is passed through the limiting sleeve.

13. The reactive power compensation device according to any one of claims 1 to 12, characterized in that: The pushing structure is configured as an electromagnet push rod structure; And / or, the reactive power compensation device further comprises a fault detection module, the fault detection module is provided in the cabinet, and the fault detection module is configured to send a fault signal when a fault is detected in the static VAR generator; And / or, the reactive power compensation device is provided with a plurality of the static VAR generators; And / or, a bearing guide rail is provided in the cabinet, and the bearing guide rail extends from the installation opening to the inner side of the installation cavity, and the generator body is supported by the bearing guide rail.

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