A capacitor operating cabinet

Abstract

The present application discloses a capacitor operation cabinet, including: an operation cabinet body and a discharge switch; a closed accommodation chamber for accommodating capacitors is provided in the operation cabinet body; a first terminal, a second terminal and a third terminal are provided on the accommodation chamber; the first terminal, the second terminal and the third terminal are respectively connected to the discharge switch; the first terminal is also used to connect the bus; the second terminal is also used to connect the bus and the capacitor; the third terminal is also used to connect the connection end of the capacitor; the discharge switch is used to control the discharge mode and the power transmission mode of the switching capacitor. It can be used to load capacitors independently to facilitate the inspection and maintenance of capacitors, and has good sealing performance, which can provide good protection for capacitors.

Description

Technical Field

[0001] The present application relates to the technical field of electric power equipment, and in particular to a capacitor operating cabinet. Background Art

[0002] In actual installation design and operation and maintenance, frame capacitors are usually connected into corresponding groups of capacitors (such as star connection Y, delta connection △, double Y connection Y / Y) in a specific wiring method according to the reactive power supplement requirements, and are installed in a certain area in the form of a fence and connected to the circuit breaker operating cabinet (operating trolley) through cables.

[0003] The centralized installation method of frame-type capacitors has the characteristics of compact structure. However, it also has the problem of relatively large maintenance workload. In addition, due to the poor sealing of frame-type capacitors, it is easy to cause the capacitor bank to be damaged by rodents and other situations. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide a capacitor operating cabinet that can be used to independently load capacitors to facilitate capacitor inspection and maintenance, and has good sealing properties to provide better protection for the capacitors.

[0005] In order to achieve the above technical purpose, the present application provides a capacitor operating cabinet, including: an operating cabinet body and a discharge switch;

[0006] The operating cabinet body is provided with a closed accommodating cavity for accommodating the capacitor;

[0007] The accommodating cavity is respectively provided with a first wiring terminal, a second wiring terminal and a third wiring terminal;

[0008] The first wiring terminal, the second wiring terminal and the third wiring terminal are respectively connected to the discharge switch;

[0009] The first terminal is also used to connect the busbar;

[0010] The second connecting terminal is also used to connect the busbar and the capacitor respectively;

[0011] The third terminal is also used to connect the connection end of the capacitor;

[0012] The discharge switch is used to control the discharge mode and the power transmission mode of the switching capacitor.

[0013] Furthermore, the operating cabinet body includes a cabinet body and a cabinet door;

[0014] The cabinet door is installed on the cabinet body and is hingedly matched with the cabinet body.

[0015] Furthermore, the discharge switch comprises an insulating rotating shaft, a driving member and a plurality of conductive rods;

[0016] The rotating shaft is horizontally pivoted at the middle of the accommodating cavity and is parallel to the cabinet door;

[0017] A plurality of conductive rods are respectively arranged vertically on the rotating shaft and distributed circumferentially around the center line of the rotating shaft;

[0018] The driving member is connected to the rotating shaft and is used for driving the rotating shaft to rotate.

[0019] Furthermore, the driving member includes a crank arm, a connecting rod, a cutter disc and a cutter disc lock;

[0020] The knife disc is pivotally connected to the operating cabinet body and is located below the rotating shaft;

[0021] One end of the crank arm is sleeved on the rotating shaft and rotates synchronously with the rotating shaft, and the other end is hinged to one end of the connecting rod;

[0022] The other end of the connecting rod is hinged to the cutter disc at a position away from the center of the circle;

[0023] The knife disc lock is installed on the operating cabinet body and is used to lock the knife disc.

[0024] Furthermore, the first wiring terminal includes a first insulator and a first contact that is movably in contact with the conductive rod;

[0025] The first insulator is installed on the side wall of the accommodating cavity away from the cabinet door;

[0026] The first contact is mounted on the first insulator and is connected in series with a fuse.

[0027] Furthermore, the second terminal includes a second insulator and a second contact;

[0028] The second insulator is installed in the accommodating cavity and is located between the rotating shaft and the cabinet door;

[0029] The second contact is mounted on the second insulator and is in movable contact and conduction cooperation with the conductive rod.

[0030] Furthermore, the third terminal comprises a third insulator and a third contact;

[0031] The third insulator is installed on the side wall of the accommodating cavity away from the cabinet door and is located below the first insulator;

[0032] The third contact is installed on the third insulator and is in movable contact and conduction cooperation with the conductive rod.

[0033] Furthermore, a first crossbeam, a second crossbeam and a third crossbeam are respectively arranged in the accommodating cavity;

[0034] The first insulator is mounted on the first beam;

[0035] The second insulator is mounted on the second crossbeam;

[0036] The third insulator is installed on the third crossbeam.

[0037] Further, it also includes a guide rail;

[0038] The bottom of the operating cabinet body is provided with a moving wheel which is slidably matched with the guide rail, and the operating cabinet body is arranged on the guide rail.

[0039] Further, a locking mechanism is also included;

[0040] The locking mechanism comprises a locking rod, a spring and an electromagnetic lock;

[0041] The operating cabinet body is provided with a plurality of limit blocks at intervals in the vertical direction;

[0042] The limit block is provided with a through hole for the locking rod to movably pass through;

[0043] The guide rail is provided with a positioning hole for the bottom end of the locking rod to movably extend into;

[0044] The spring is sleeved on the locking rod, and one end of the spring is fixedly connected to the locking rod, and the other end of the spring is fixedly connected to a limiting block, so as to provide elastic force for the locking rod to move along the direction of the positioning hole;

[0045] The electromagnetic lock is mounted on the operating cabinet body and is used to lock the locking rod when the bottom end of the locking rod extends out of the positioning hole.

[0046] It can be seen from the above technical solutions that the present application realizes relatively sealed independent loading of capacitors by setting up an operating cabinet body with a sealed accommodating cavity, which is convenient for the installation and maintenance of capacitors and can also provide better protection for capacitors. In addition, a first wiring terminal, a second wiring terminal and a third wiring terminal are set in the operating cabinet body, and used in conjunction with a discharge switch, which facilitates the switching operation of the discharge mode and the power supply mode of the capacitor, making maintenance and repair more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 these drawings without paying creative labor.

[0048] Figure 1 A front view of a capacitor operating cabinet provided in the present application, in which a single-phase capacitor is installed;

[0049] Figure 2 A side view of a capacitor operating cabinet provided in the present application having a single-phase capacitor installed therein;

[0050] Figure 3 A front view of a capacitor operating cabinet provided in the present application, in which three single-phase capacitors are installed;

[0051] Figure 4 A side view of a capacitor operating cabinet provided in the present application, in which three single-phase capacitors are installed;

[0052] Figure 5 A front view of a capacitor operating cabinet provided in the present application, in which a three-phase capacitor is installed;

[0053] Figure 6 A side view of a capacitor operating cabinet provided in the present application having a three-phase capacitor installed therein;

[0054] Figure 7 A schematic diagram of a circuit structure in which three operating cabinet bodies equipped with single-phase capacitors are externally connected in a Y-connection manner provided in this application;

[0055] Figure 8 A schematic diagram of a circuit structure provided in this application in which three operating cabinet bodies equipped with single-phase capacitors are externally connected in a triangle wiring manner;

[0056] Fig. 9 A schematic diagram of a circuit structure in which an operating cabinet body provided in the present application is installed with three single-phase capacitors and is internally connected in a triangle wiring manner;

[0057] Fig.10 A schematic diagram of a circuit structure in which an operating cabinet body provided in the present application is installed with three single-phase capacitors and is internally connected in a Y-shaped wiring manner;

[0058] Fig.11 A schematic diagram of a circuit structure in which an operating cabinet body provided in the present application is installed with a three-phase capacitor and is internally connected in a triangle wiring manner;

[0059] In the figure: 1. operating cabinet body; 11. first crossbeam; 12. second crossbeam; 13. third crossbeam; 14. moving wheel; 2. single-phase capacitor; 31. first insulator; 32. second insulator; 33. third insulator; 41. first contact; 42. second contact; 43. third contact; 51. rotating shaft; 511. bearing seat; 52. conductive rod; 53. crank arm; 54. connecting rod; 55. knife disc; 56. knife disc lock; 61. locking rod; 611. handle; 62. spring; 63. electromagnetic lock; 7. guide rail; 71. positioning hole; 8. fuse. DETAILED DESCRIPTION

[0060] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0061] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which 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 limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0062] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0063] An embodiment of the present application discloses a capacitor operating cabinet.

[0064] See also Figure 1 as well as Figure 2 , an embodiment of a capacitor operation cabinet provided in an embodiment of the present application includes:

[0065] An operating cabinet body 1 and a discharge switch; a sealed accommodating chamber for accommodating a capacitor is provided in the operating cabinet body 1; a first terminal, a second terminal and a third terminal are respectively provided on the accommodating chamber; the first terminal is also used to connect a busbar; the second terminal is also used to connect a busbar and a capacitor respectively; the third terminal is also used to connect a connection end of the capacitor; the discharge switch is used to control the discharge mode and the power supply mode of the switching capacitor.

[0066] Specifically, if Figure 1 as well as Figure 2 As shown, taking the operating cabinet body 1 with a single-phase capacitor 2 installed as an example, the installed capacitor can be connected to the busbar by operating the discharge switch to realize the power transmission mode. Similarly, the discharge switch can also be operated to disconnect the installed capacitor from the busbar, so that the capacitor is short-circuited and connected to the ground wire in the operating cabinet body 1 to realize the discharge mode.

[0067] It can be seen from the above technical solutions that the present application realizes relatively sealed independent loading of capacitors by setting an operating cabinet body 1 with a sealed accommodating cavity, which is convenient for the installation and maintenance of capacitors and can also provide better protection for capacitors. In addition, a first wiring terminal, a second wiring terminal and a third wiring terminal are set in the operating cabinet body 1, and used in conjunction with a discharge switch, which facilitates the switching operation of the discharge mode and the power supply mode of the capacitor, and makes maintenance and repair more convenient.

[0068] The above is an embodiment of a capacitor operation cabinet provided in the embodiment of the present application. The following is an embodiment of a capacitor operation cabinet provided in the embodiment of the present application. For details, please refer to Figures 1 to 11 .

[0069] A capacitor operating cabinet comprises: an operating cabinet body 1 and a discharge switch; a closed accommodating chamber for accommodating a capacitor is provided in the operating cabinet body 1; a first wiring terminal, a second wiring terminal and a third wiring terminal are respectively provided on the accommodating chamber; the first wiring terminal is also used to connect a busbar; the second wiring terminal is also used to connect the busbar and the capacitor respectively; the third wiring terminal is also used to connect a connection end of the capacitor; the discharge switch is used to control the discharge mode and the power transmission mode of the switching capacitor.

[0070] Furthermore, the operating cabinet body 1 includes a cabinet body (not shown) and a cabinet door (not shown); the cabinet door is mounted on the cabinet body and hingedly matched with the cabinet body. The specific structure of the operating cabinet body 1 can follow the conventional KYN cabinet structure, and those skilled in the art can make appropriate changes based on this, without specific limitation.

[0071] Furthermore, if Figure 1 , Figure 3 as well as Figure 5As shown, the discharge switch includes an insulating shaft 51, a driving member, and a plurality of conductive rods 52; the shaft 51 is horizontally pivoted in the middle of the accommodating cavity and is parallel to the cabinet door; a plurality of conductive rods 52 are respectively vertically arranged on the shaft 51 and are circumferentially distributed around the center line of the shaft 51; the driving member is connected to the shaft 51 to drive the shaft 51 to rotate. The shaft 51 made of insulating material can be pivotally installed in the middle of the accommodating cavity through a bearing seat 511 with a radial bearing, so that a capacitor can be installed in the lower area of ​​the shaft 51, without specific restrictions. The installation of the conductive rod 52 on the shaft 51 has the same function as a conventional rotary three-pole knife switch, and is used to connect the busbar and the grounding conversion. Those skilled in the art can make appropriate changes based on this, without specific restrictions.

[0072] Furthermore, if Figure 1 , Figure 3 as well as Figure 5 As shown, the driving member includes a crank arm 53, a connecting rod 54, a cutter disc 55 and a cutter disc lock 56; the cutter disc 55 is pivotally connected to the operating cabinet body 1 and is located below the rotating shaft 51; one end of the crank arm 53 is sleeved on the rotating shaft 51 and rotates synchronously with the rotating shaft 51, and the other end is hinged to one end of the connecting rod 54; the other end of the connecting rod 54 is hinged to the cutter disc 55 at a position away from the center of the circle; the cutter disc lock 56 is installed on the operating cabinet body 1, and is used to lock the cutter disc 55.

[0073] Specifically, one end of the crank arm 53 is sleeved on the rotating shaft 51 and rotates synchronously with the rotating shaft 51; one end of the connecting rod 54 is hinged to the other end of the crank arm 53, and the other end of the connecting rod 54 is hinged to a position on the cutter disc 55 away from the center of the circle. The control principle is: the cutter disc 55 is rotated to drive the connecting rod 54 to move, and the movement of the connecting rod 54 is used to drive the rotating shaft 51 to rotate, so as to achieve the switching of the grounding mode or the power transmission mode. In this embodiment, the cutter disc 55 can be rotatably installed on the inner wall of the cabinet body near the cabinet door through the connecting shaft. During operation, the staff can operate by opening the cabinet door. Of course, an avoidance opening (not shown in the figure) can also be opened on the cabinet door so that part of the cutter disc 55 can be extended, so that the operation can be performed without opening the cabinet door. The above implementation means can be appropriately changed by those skilled in the art based on this, and there is no specific limitation. The knife disc lock 56 can be a conventional latch lock, which is installed on the operating cabinet body 1 at a position opposite to the knife disc 55, so that the telescopic rod on the latch lock can match the lock hole on the knife disc 55 (not shown in the figure). Correspondingly, the lock hole on the knife disc 55 can also indicate the rotation position of the knife disc 55. For example, when the knife disc 55 rotates to the grounding lock hole corresponding to the telescopic rod, it means that the discharge switch has switched the capacitor to the grounding discharge mode, and then the latch lock is driven by the corresponding key to lock the knife disc 55 to prevent the knife disc 55 from rotating. Similarly, when the knife disc 55 rotates to the power transmission lock hole corresponding to the telescopic rod, it means that the discharge switch has switched the capacitor from the grounding mode back to the power transmission mode, and then the latch lock is driven by the key to lock the knife disc 55.

[0074] Furthermore, the first terminal includes a first insulator 31 and a first contact 41 that is in movable contact and conduction with the conductive rod 52; the first insulator 31 is installed on the side wall of the accommodating cavity away from the cabinet door; the first contact 41 is installed on the first insulator 31, and is connected in series with a fuse 8. In this embodiment, in order to facilitate the installation and fixation of the fuse 8, another insulator with a contact can be vertically arranged on the first insulator 31, and at the same time, an insulator with a contact can also be arranged on the top wall of the accommodating cavity, and the two added insulators with contacts are used to install and fix the fuse 8, so that the first contact 41 on the first insulator 31 can be connected to the busbar through the fuse 8. Of course, it is not limited to the above-mentioned implementation means, and those skilled in the art can make appropriate changes based on this, and there is no specific limitation.

[0075] Furthermore, if Figure 1 , Figure 3 as well as Figure 5As shown, the second terminal includes a second insulator 32 and a second contact 42; the second insulator 32 is installed in the accommodating cavity and is located between the rotating shaft 51 and the cabinet door; the second contact 42 is installed on the second insulator 32 and is in movable contact and conduction with the conductive rod 52. The third terminal includes a third insulator 33 and a third contact 43; the third insulator 33 is installed on the side wall of the accommodating cavity away from the cabinet door and is located below the first insulator 31; the third contact 43 is installed on the third insulator 33 and is in movable contact and conduction with the conductive rod 52. The composition structure of the second terminal and the third terminal is the same as that of the first terminal. In this embodiment, the first terminal can be set on the side wall of the accommodating cavity facing the cabinet door, the corresponding second terminal can be installed near the cabinet door, and the third terminal can be installed on the same side wall as the first terminal. As a whole, the first terminal, the second terminal and the third terminal can be set around the discharge switch, which is convenient for cooperation with the conductive rod 52 of the discharge switch, and there is no specific limitation.

[0076] Furthermore, if Figures 1 to 6 As shown, the first beam 11, the second beam 12 and the third beam 13 are respectively set in the accommodating cavity; the first insulator 31 is installed on the first beam 11; the second insulator 32 is installed on the second beam 12; and the third insulator 33 is installed on the third beam 13. The first insulator 31, the second insulator 32 and the third insulator 33 can also be conveniently installed by setting a corresponding beam structure, and the specific distribution position can be determined according to the predetermined installation position of the first insulator 31, the second insulator 32 and the third insulator 33.

[0077] Furthermore, if Figure 2 , Figure 4 as well as Figure 6 As shown, the operating cabinet body 1 also includes a guide rail 7; a moving wheel 14 that slides with the guide rail 7 is provided at the bottom of the operating cabinet body 1, and the operating cabinet body 1 is arranged on the guide rail 7. Specifically, the guide rail 7 can be installed in the high-voltage cabinet, so that when the operating cabinet body 1 is installed in the high-voltage cabinet, it is more convenient to pull out or load it, and maintenance and repair are more convenient. The guide rail 7 can be a groove track, which is not specifically limited.

[0078] Furthermore, if Figures 1 to 6As shown, it also includes a locking mechanism; the locking mechanism includes a locking rod 61, a spring 62 and an electromagnetic lock 63; a plurality of limit blocks (not shown) are provided on the operating cabinet body 1 at intervals in the vertical direction; the limit blocks are provided with through holes for the locking rod 61 to move through; the guide rail 7 is provided with a positioning hole 71 for the bottom end of the locking rod 61 to move into; the spring 62 is sleeved on the locking rod 61, and one end is fixedly connected to the locking rod 61, and the other end is fixedly connected to a limit block to provide elastic force for the locking rod 61 to move along the direction of the positioning hole 71; the electromagnetic lock 63 is installed on the operating cabinet body 1, and is used to lock the locking rod 61 when the bottom end of the locking rod 61 extends out of the positioning hole 71. The locking rod 61 is also provided with a lock hole that cooperates with the rod body of the electromagnetic lock 63. When the locking rod 61 extends into the positioning hole 71 to achieve locking, the rod body of the electromagnetic lock 63 can also cooperate with another lock hole at this time to better stabilize the locking state. Similarly, the spring 62 is also provided to provide an elastic force to make the locking of the lock rod 61 more secure. In this embodiment, a handle 611 can be provided on the lock rod 61 for easy operation. In this embodiment, the electromagnetic lock 63 can be set to lock the lock rod 61 in the power-on state and unlock the lock rod 61 in the power-off state, so as to facilitate subsequent operations.

[0079] Specifically, the purpose of setting the locking mechanism is to make the installation of the operating cabinet body 1 more stable and firm. The operation process can be as follows: when maintenance and overhaul are required, the electromagnetic lock 63 can be unlocked first, and then the handle 611 can be turned to extend the locking rod 61 from the positioning hole 71, and then the locking rod 61 can be re-locked by the electromagnetic lock 63, and then the operating cabinet body 1 can be pulled out. Similarly, after the overhaul work is completed, the operating cabinet body 1 can be pushed back to the initial position, and then the electromagnetic lock 63 can be unlocked, so that the locking rod 61 can be extended into the positioning hole 71, forming a limit lock on the operating cabinet body 1, and then the locking rod 61 can be re-locked by the electromagnetic lock 63.

[0080] In the present application, the operating cabinet body 1 may be installed with Figure 1 as well as Figure 2 A single-phase capacitor 2 is shown, which can also be installed as Figure 3 as well as Figure 4 The multiple single-phase capacitors 2 shown can also be installed as Figure 5 as well as Figure 6 The number of wiring terminals in the operating cabinet body 1 is adaptively set according to the number of capacitors or single-phase / three-phase capacitors to be installed, and there is no specific limitation.

[0081] The operation process can be, for example:

[0082] by Figure 1 as well as Figure 2 For example:

[0083] The power supply operation cabinet body 1 is initially pulled out and powered off, and the electromagnetic lock 63 is not powered and is unlocked:

[0084] 1. Manually check the electricity first to confirm whether there is no electricity. When it is confirmed that there is no electricity, you can turn the handle 611, lift the lock rod 61, and then push the operating cabinet body 1 to move to the working position;

[0085] When the operating cabinet body 1 is pushed to the working position, the locking rod 61 is reset downward under the action of the spring 62, and extends into the positioning hole 71 to lock the operating cabinet body 1;

[0086] 3 Unlock the cutter head lock 56 again, and operate the cutter head 55 to switch to the power transmission mode, so that the capacitor is connected to the busbar;

[0087] 4 Then lock the cutter head 55 and turn on the power switch of the busbar.

[0088] The discharge operation cabinet is in a state of requiring maintenance and repair;

[0089] 1. Disconnect the power supply of the busbar;

[0090] 2 Unlock the cutter head lock 56 again, and operate the cutter head 55 to switch to the discharge mode, so that the capacitor is short-circuited and grounded to achieve discharge;

[0091] 3. Manually check the electricity to confirm whether the discharge is complete. When it is confirmed that there is no electricity, the electromagnetic lock 63 is also in the unlocked state because it is not powered.

[0092] 4 Move the handle 611, lift and hold the lock rod 61, and then pull the operating cabinet body 1 out to the maintenance test position;

[0093] The handle 611 can be loosened, so that the locking rod 61 extends into the positioning hole 71 under the action of the spring 62 to achieve locking.

[0094] In addition, in the present application, for the operating cabinet body 1 installed with different numbers or single-phase / three-phase capacitors, different wiring methods can be flexibly adopted according to needs.

[0095] by Figure 7 For example, Figure 7 The present invention is a schematic diagram of a circuit structure in which an operating cabinet body 1 with three single-phase capacitors 2 installed is externally connected in a Y-connection manner.

[0096] Among them, the single-phase capacitor 2 in the first operating cabinet body 1 can be connected to the A phase line and the N phase line of the bus respectively, the single-phase capacitor 2 in the second operating cabinet body 1 can be connected to the B phase line and the N phase line of the bus respectively, and the single-phase capacitor 2 in the third operating cabinet body 1 can be connected to the C phase line and the N phase line of the bus respectively.

[0097] by Figure 8 For example, Figure 8 The schematic diagram of the circuit structure is that three operating cabinet bodies 1 equipped with single-phase capacitors 2 are externally connected in a triangle wiring mode.

[0098] Among them, the single-phase capacitor 2 in the first operating cabinet body 1 can be connected to the A phase line and the B phase line of the bus respectively, the single-phase capacitor 2 in the second operating cabinet body 1 can be connected to the B phase line and the C phase line of the bus respectively, and the single-phase capacitor 2 in the third operating cabinet body 1 can be connected to the C phase line and the A phase line of the bus respectively.

[0099] by Fig. 9 For example, Fig. 9 The schematic diagram of the circuit structure of the operating cabinet body 1 with three single-phase capacitors 2 installed is a triangle wiring diagram inside.

[0100] Among them, three single-phase capacitors 2 are connected in parallel, and the first single-phase capacitor 2 is respectively connected to the A phase line and the B phase line of the bus, the second single-phase capacitor 2 is respectively connected to the B phase line and the C phase line of the bus, and the third single-phase capacitor 2 is respectively connected to the C phase line and the A phase line of the bus.

[0101] by Fig.10 For example, Fig.10 The schematic diagram of the circuit structure of an operating cabinet body 1 equipped with three single-phase capacitors 2 is a Y-shaped wiring diagram.

[0102] Among them, one end of the three single-phase capacitors 2 in the operation cabinet body 1 is respectively connected to the A phase line, the B phase line and the C phase line of the bus, and the other end of the three single-phase capacitors 2 is respectively connected to the N phase line of the bus.

[0103] by Fig.11 For example, Fig.11 The schematic diagram of the circuit structure of the operating cabinet body 1 with a three-phase capacitor installed is a triangle wiring diagram inside.

[0104] Among them, the three single-phase capacitors 2 in the operating cabinet body 1 are connected and turned on, and the first phase located between the AB positions are respectively connected to the A phase line and the B phase line of the bus, the second phase located between the BC positions are respectively connected to the B phase line and the C phase line of the bus, and the third phase located between the CA positions are respectively connected to the C phase line and the A phase line of the bus.

[0105] Of course, the present invention is not limited to the above wiring means, and those skilled in the art can make appropriate changes based on this, without any specific limitation.

[0106] It can be seen from the above technical solutions that the present application realizes relatively sealed independent loading of capacitors by setting an operating cabinet body 1 with a sealed accommodating cavity, which is convenient for the installation and maintenance of capacitors and can also provide better protection for capacitors. In addition, a first wiring terminal, a second wiring terminal and a third wiring terminal are set in the operating cabinet body 1, and used in conjunction with a discharge switch, which facilitates the switching operation of the discharge mode and the power supply mode of the capacitor, and makes maintenance and repair more convenient.

[0107] The above is a detailed introduction to a capacitor operating cabinet provided in the present application. For a person skilled in the art, according to the idea of ​​the embodiments of the present application, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A capacitor operating cabinet, characterized in that: Including: operating cabinet body and discharge switch; The operating cabinet body is provided with a closed accommodating cavity for accommodating the capacitor; The accommodating cavity is respectively provided with a first wiring terminal, a second wiring terminal and a third wiring terminal; The first wiring terminal, the second wiring terminal and the third wiring terminal are respectively connected to the discharge switch; The first terminal is also used to connect the busbar; The second connecting terminal is also used to connect the busbar and the capacitor respectively; The third terminal is also used to connect the connection end of the capacitor; The discharge switch is used to control the discharge mode and the power transmission mode of the switching capacitor; The operating cabinet body comprises a cabinet body and a cabinet door; The cabinet door is installed on the cabinet body and is hingedly matched with the cabinet body; The discharge switch comprises an insulating rotating shaft, a driving member and a plurality of conductive rods; The rotating shaft is horizontally pivoted at the middle of the accommodating cavity and is parallel to the cabinet door; A plurality of conductive rods are respectively arranged vertically on the rotating shaft and distributed circumferentially around the center line of the rotating shaft; The driving member is connected to the rotating shaft and is used to drive the rotating shaft to rotate; Also includes rails; The bottom of the operating cabinet body is provided with a moving wheel which is slidably matched with the guide rail, and the operating cabinet body is arranged on the guide rail.

2. A capacitor operating cabinet according to claim 1, characterized in that: The driving member includes a crank arm, a connecting rod, a cutter disc and a cutter disc lock; The knife disc is pivotally connected to the operating cabinet body and is located below the rotating shaft; One end of the crank arm is sleeved on the rotating shaft and rotates synchronously with the rotating shaft, and the other end is hinged to one end of the connecting rod; The other end of the connecting rod is hinged to the cutter disc at a position away from the center of the circle; The knife disc lock is installed on the operating cabinet body and is used to lock the knife disc.

3. A capacitor operating cabinet according to claim 1, characterized in that: The first wiring terminal comprises a first insulator and a first contact that is movably in contact with the conductive rod; The first insulator is installed on the side wall of the accommodating cavity away from the cabinet door; The first contact is mounted on the first insulator and is connected in series with a fuse.

4. A capacitor operating cabinet according to claim 3, characterized in that: The second terminal comprises a second insulator and a second contact; The second insulator is installed in the accommodating cavity and is located between the rotating shaft and the cabinet door; The second contact is mounted on the second insulator and is in movable contact and conduction cooperation with the conductive rod.

5. A capacitor operating cabinet according to claim 4, characterized in that: The third connecting terminal includes a third insulator and a third contact; The third insulator is installed on the side wall of the accommodating cavity away from the cabinet door and is located below the first insulator; The third contact is installed on the third insulator and is in movable contact and conduction cooperation with the conductive rod.

6. A capacitor operating cabinet according to claim 5, characterized in that: A first crossbeam, a second crossbeam and a third crossbeam are respectively arranged in the accommodating cavity; The first insulator is mounted on the first beam; The second insulator is mounted on the second crossbeam; The third insulator is installed on the third crossbeam.

7. A capacitor operating cabinet according to claim 1, characterized in that: Also includes a locking mechanism; The locking mechanism comprises a locking rod, a spring and an electromagnetic lock; The operating cabinet body is provided with a plurality of limit blocks at intervals in the vertical direction; The limit block is provided with a through hole for the locking rod to movably pass through; The guide rail is provided with a positioning hole for the bottom end of the locking rod to movably extend into; The spring is sleeved on the locking rod, and one end of the spring is fixedly connected to the locking rod, and the other end of the spring is fixedly connected to a limiting block, so as to provide elastic force for the locking rod to move along the direction of the positioning hole; The electromagnetic lock is mounted on the operating cabinet body and is used to lock the locking rod when the bottom end of the locking rod extends out of the positioning hole.

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