Three-phase integrated fast switch energy storage control outdoor cabinet

Abstract

The invention particularly relates to a three-phase integrated fast switch energy storage control outdoor cabinet, which is characterized by comprising a cabinet body, an energy storage capacitor, a control board card, a control silicon stack, a power supply module, a control protection device and a discharge loop, the control board card and the control silicon stack are arranged front and back at the same height in the middle of the cabinet body and located above the energy storage capacitor, the power module, the control and protection device and the discharge loop are arranged on the upper portion in the cabinet body, the power module and the discharge loop are arranged front and back, and meanwhile the power module is located on the upper portion of the control silicon stack. The control protection device is located above the discharge loop, the power supply module is connected with the energy storage capacitor through the control silicon stack, the control board card is connected with the control silicon stack, the control board card is in communication connection with the control protection device, and the energy storage capacitor is connected with the discharge loop. The problems that in the prior art, the structure is complex, the occupied area is large, operation and overhaul are difficult, and the capacitance value of a capacitor cannot be adjusted are solved.

Description

Technical Field

[0001] The present invention relates to an outdoor cabinet, and particularly to a three-phase integrated fast-switch energy storage control outdoor cabinet, belonging to the technical field of fast switches. Background Art

[0002] Compared with traditional switches, fast switches have the characteristics of fast opening speed, simple structure, convenient maintenance and repair, etc., and can effectively suppress the harm caused by grid short-circuit current. However, the existing fast-switch energy storage and control unit is arranged on the high-voltage side with the fast switch, and installation and maintenance require power outage operation in the substation; and generally, the unit is designed as a whole and arranged in the same cabinet with the fast switch. When overhauling, it needs to be removed from the switch cabinet and then disassembled to replace a certain faulty part inside the unit, and the process is cumbersome and time-consuming; the energy storage capacitor is generally a square integral capacitor, with poor scalability and non-adjustable capacitance parameters. Summary of the Invention

[0003] The object of the present invention is to provide a three-phase integrated fast-switch energy storage control outdoor cabinet, which overcomes the problems existing in the prior art, such as the complex structure of the fast-switch energy storage control unit, large floor area, difficult operation and maintenance, non-adjustable capacitance of the capacitor, low reliability of the control unit, low protection level and harsh requirements for the use environment.

[0004] To achieve the above object, the technical solution of the present invention is: a three-phase integrated fast-switch energy storage control outdoor cabinet, and its innovation lies in: including a cabinet body, an energy storage capacitor, a control board, a control silicon stack, a power module, a control and protection device, and a discharge circuit,

[0005] The energy storage capacitor is arranged at the lower part inside the cabinet body, the control board and the control silicon stack are arranged front and back and at the same height in the middle of the cabinet body and are located above the energy storage capacitor, the power module, the control and protection device and the discharge circuit are arranged at the upper part inside the cabinet body, and the power module and the discharge circuit are arranged front and back. At the same time, the power module is located above the control silicon stack, and the control and protection device is located above the discharge circuit.

[0006] The power module is connected to the energy storage capacitor through the control silicon stack for charging the energy storage capacitor. The control board is connected to the control silicon stack, and the energy storage capacitor is also connected to the fast switch through the control silicon stack. The control board is communicatively connected to the control and protection device. The energy storage capacitor is connected to the discharge circuit for discharging the energy storage capacitor during maintenance.

[0007] In the above technical solution, cable and optical fiber aviation plug interfaces are provided on the side of the cabinet body. The cable is connected to the input and output terminals of the control board card and the copper busbar of the control silicon stack, and is used for the energy storage capacitor to discharge the fast switch. The position laser signal of the fast switch is connected to the laser daughter board of the control board card through the optical fiber on the optical fiber aviation plug interface. A grounding busbar is provided at the lower part of the cabinet body to be connected to the primary grounding busbar. Secondary optical fibers and optical fiber inlet and outlet interfaces are provided at the bottom of the cabinet body for connecting external power cables and communication optical fibers.

[0008] In the above technical solution, a forklift hole for the cabinet body transfer is provided on the bottom frame of the cabinet body, which is a reserved interface for the forklift transfer of the outdoor cabinet.

[0009] In the above technical solution, the energy storage capacitor includes a bottom support plate, a closing capacitor, a first opening capacitor, a second opening capacitor, an intermediate limiting plate and a first connecting copper busbar. The bottom support plate is fixed at the bottom inside the cabinet body, and the closing capacitor, the first opening capacitor and the second opening capacitor are all arranged on the bottom support plate. At the same time, the intermediate limiting plate arranged inside the cabinet body sleeves the outer circumferences of the closing capacitor, the first opening capacitor and the second opening capacitor to prevent the capacitor from toppling during the transportation of the cabinet body. The closing capacitor, the first opening capacitor and the second opening capacitor are connected in series and parallel through the first connecting copper busbar and are electrically connected to the corresponding connection terminals of the control silicon stack and the discharge circuit.

[0010] In the above technical solution, the closing capacitor, the first opening capacitor and the second opening capacitor are all composed of a plurality of single-column cylindrical capacitors connected in parallel.

[0011] In the above technical solution, the control silicon stack includes a support beam, a support insulator, a diode silicon stack, a thyristor silicon stack and a second connecting copper busbar. Two groups of support beams and support insulators are provided inside the cabinet body. The diode silicon stack and the thyristor silicon stack are arranged in upper and lower layers, and the diode silicon stack is located below the thyristor silicon stack and is connected through the second connecting copper busbar.

[0012] The diode silicon stack is fixed on one of the support beams through the corresponding support insulator. The power module is connected to the energy storage capacitor through the diode silicon stack.

[0013] The thyristor silicon stack is installed on the other support beam through the corresponding support insulator, and the control board card is connected to the thyristor silicon stack to control the conduction and cut-off of the thyristors in the thyristor silicon stack. The energy storage capacitor is connected to the fast switch through the thyristor silicon stack. When the control board card controls the thyristor to conduct, the energy storage capacitor releases energy to control the opening and closing of the fast switch.

[0014] In the above technical solution, the diode stack includes a closing diode stack, a first opening diode stack, and a second opening diode stack, and the thyristor stack includes a first opening thyristor stack, a second opening thyristor stack, and a closing thyristor stack.

[0015] The energy storage capacitor includes a closing capacitor, a first opening capacitor, and a second opening capacitor.

[0016] The closing diode stack is electrically connected to and vertically corresponds to the closing thyristor stack, the closing capacitor is electrically connected to the closing diode stack, and the closing diode stack is located above the closing capacitor.

[0017] The first opening diode stack is electrically connected to and vertically corresponds to the first opening thyristor stack, the first opening capacitor is electrically connected to the first opening diode stack, and the first opening diode stack is located above the first opening capacitor.

[0018] The second opening diode stack is electrically connected to and vertically corresponds to the second opening thyristor stack, the second opening capacitor is electrically connected to the second opening diode stack respectively, and the second opening diode stack is located above the second opening capacitor.

[0019] The first opening thyristor stack and the second opening thyristor stack are electrically connected in parallel and share a copper busbar for connecting the opening trigger line of the fast switch. The first opening thyristor stack and the closing thyristor stack share a copper busbar for releasing the residual energy of the repulsive coil of the fast switch.

[0020] In the above technical solution, the rectifying diodes provided in the diode stack and the trigger thyristors in the thyristor stack are arranged in a dual-redundant manner to increase the reliability of the energy storage capacitor charging and discharging.

[0021] In the above technical solution, the discharge circuit includes a discharge resistor, a voltmeter, and a discharge module. One end of the discharge resistor is connected to the energy storage capacitor, and the other end is connected to the discharge module. When the discharge module is turned on, the energy storage capacitor releases energy through the discharge resistor, and the voltmeter is used to display the remaining voltage of the capacitor.

[0022] In the above technical solution, a plurality of maintenance doors are provided on both the front and rear sides of the cabinet body. The operation panel of the control and protection device and the voltmeter of the discharge circuit are arranged at the front of the cabinet body, which is convenient for status display and maintenance operation.

[0023] The positive effect of the present invention is that after adopting the three-phase integrated fast switch energy storage control outdoor cabinet of the present invention, since the present invention includes a cabinet body, an energy storage capacitor, a control board, a control silicon stack, a power module, a control and protection device, and a discharge circuit.

[0024] The energy storage capacitor is arranged at the lower part inside the cabinet. The control board and the control silicon stack are arranged in the middle of the cabinet in the front-back direction and at the same height, and are located above the energy storage capacitor. The power supply module, the control and protection device, and the discharge circuit are arranged at the upper part inside the cabinet. The power supply module and the discharge circuit are arranged in the front-back direction. At the same time, the power supply module is located above the control silicon stack, and the control and protection device is located above the discharge circuit.

[0025] The power supply module is connected to the energy storage capacitor through the control silicon stack for charging the energy storage capacitor. The control board is connected to the control silicon stack, and the energy storage capacitor is also connected to the fast switch through the control silicon stack. The control board is communicatively connected to the control and protection device. The energy storage capacitor is connected to the discharge circuit for discharging the energy storage capacitor during maintenance.

[0026] In the present invention, the fast switch energy storage control unit is independently arranged inside the cabinet, exists independently from the fast switch, and the three-phase integrated layout inside the cabinet is at ground potential and is decoupled and installed from the high-voltage side of the fast switch, making the maintenance convenient, and the installation and maintenance do not require power outage operation in the substation. During maintenance, only the cabinet needs to be opened, without the need to be removed from the switchgear as in the prior art. The rectification and maintenance process is simpler and more efficient, and can be used for retrofitting fast switches in old power stations to reduce the harm of short-circuit current; the energy storage and control units are decentralized, and the redundant configuration of the control unit improves the opening and closing reliability of the fast switch; the cabinet is designed according to the structure of a conventional secondary outdoor cabinet, and the external incoming line enters from the bottom of the cabinet, and the wire harness interface with the fast switch adopts a high-protection aviation plug structure, making it applicable to different environmental conditions.

[0027] Therefore, the present invention overcomes the problems existing in the prior art, such as the complex structure of the fast switch energy storage control unit, large floor area, difficult operation and maintenance, non-adjustable capacitance value of the capacitor, low reliability of the control unit, and low protection level with harsh requirements for the use environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a specific embodiment of the present invention;

[0029] Figure 2 is Figure 1 the rear view schematic diagram;

[0030] Figure 3 is a three-dimensional structural diagram of the present invention;

[0031] Figure 4 is a schematic structural diagram of the energy storage capacitor of the present invention;

[0032] Figure 5 is a schematic structural diagram of the control silicon stack of the present invention;

[0033] Figure 6 is a schematic structural diagram of the energy storage capacitor discharge circuit of the present invention;

[0034] Wherein: cabinet body 1, energy storage capacitor 2, control board 3, control silicon stack 4, power supply module 5, control and protection device 6, discharge circuit 7, optical cable aviation plug interface 11, grounding bar 12, secondary cable and optical cable inlet and outlet interface 13, cabinet body transfer forklift hole 14, bottom support plate 21, closing capacitor 22, first opening capacitor 23, second opening capacitor 24, middle limit plate 25, first connecting copper bar 26, support beam 41, support insulator 42, closing diode silicon stack 43, first opening diode silicon stack 44, second opening diode silicon stack 45, second connecting copper bar 46, second opening thyristor silicon stack 47, first opening thyristor silicon stack 48, closing thyristor silicon stack 49, discharge resistor 71, voltmeter 72, discharge module 73. Specific embodiments

[0035] The present invention will be further described below in conjunction with the accompanying drawings and the given embodiments, but is not limited thereto.

[0036] As Figure 1 、 2 As shown in Figures 3, 4, 5, and 6, a three-phase integrated fast-switch energy storage control outdoor cabinet includes a cabinet body 1, an energy storage capacitor 2, a control board 3, a control silicon stack 4, a power supply module 5, a control and protection device 6, and a discharge circuit 7.

[0037] The energy storage capacitor 2 is arranged at the lower part inside the cabinet body 1. The control board 3 and the control silicon stack 4 are arranged in the middle of the cabinet body 1 in the front and back and at the same height, which can effectively reduce the length of the thyristor trigger wire and are located above the energy storage capacitor 2. The control board 3 is arranged on the front side of the cabinet body for convenient observation of the status indicator light. The control silicon stack 4 is connected to the energy storage capacitor 2 downward and to the power supply module 6 upward. The power supply module 5, the control and protection device 6, and the discharge circuit 7 are arranged at the upper part inside the cabinet body 1, and the power supply module 5 and the discharge circuit 7 are arranged in the front and back. At the same time, the power supply module 5 is located above the control silicon stack 4, making the wiring harness connection convenient. The control and protection device 6 is located above the discharge circuit 7.

[0038] The power supply module 5 is connected to the energy storage capacitor 2 through the control silicon stack 4 for charging the energy storage capacitor 2. The control board 3 is connected to the control silicon stack 4, and the energy storage capacitor 2 is also connected to the fast switch through the control silicon stack 4. The control board 3 and the control and protection device 6 are connected and communicate through an optical fiber. The energy storage capacitor 2 is connected to the discharge circuit 7 for discharging the energy storage capacitor 2 during maintenance.

[0039] As Figure 3As shown in the figure, in order to facilitate the quick plugging of cables and optical fibers, the side of the cabinet body 1 is provided with cable and optical fiber aviation plug interfaces 11. The cables are connected to the input / output terminals of the control board 3 and the copper busbar of the control silicon stack 4, and are used for the energy storage capacitor 2 to discharge the quick switch. The position laser signal of the quick switch is connected to the laser sub-board of the control board 3 through the optical fiber on the optical fiber aviation plug interface 11. Among them, the optical fiber aviation plug interface 11 is provided with a quick switch position node signal line and an electromagnetic repulsion trigger line. The lower part of the cabinet body 1 is provided with a grounding busbar 12 for connecting to the primary grounding busbar. The bottom of the cabinet body 1 is provided with secondary cable and optical fiber inlet / outlet interfaces 13 for connecting external power cables and communication optical fibers.

[0040] As Figure 3 shown in the figure, in order to facilitate the overall transportation, a forklift hole 14 for the cabinet body transfer is provided on the bottom frame of the cabinet body 1, which is a reserved interface for the forklift transfer of the outdoor cabinet.

[0041] As Figure 4 shown in the figure, the capacitance value can be adjusted by increasing or decreasing the capacitance according to the experimental results. The energy storage capacitor 2 includes a bottom support plate 21, a closing capacitor 22, a first opening capacitor 23, a second opening capacitor 24, an intermediate limiting plate 25 and a first connecting copper busbar 26. The bottom support plate 21 is fixed at the bottom inside the cabinet body 1, and the closing capacitor 22, the first opening capacitor 23 and the second opening capacitor 24 are all arranged on the bottom support plate 21. At the same time, the intermediate limiting plate 25 arranged inside the cabinet body 1 is sleeved on the outer circumferences of the closing capacitor 22, the first opening capacitor 23 and the second opening capacitor 24 to prevent the capacitors from toppling during the transportation of the cabinet body. The closing capacitor 22, the first opening capacitor 23 and the second opening capacitor 24 are connected in series and parallel through the first connecting copper busbar 26 and are electrically connected to the corresponding connection terminals of the control silicon stack 4 and the discharge circuit 7.

[0042] As Figure 4 shown in the figure, in order to make the structural layout simple and convenient for maintenance, and because of its large weight, it is arranged at the lower part of the cabinet body, making the overall layout more optimized. The closing capacitor 22, the first opening capacitor 23 and the second opening capacitor 24 are all composed of multiple single-column cylindrical capacitors connected in parallel. At the same time, the capacitance value can be adjusted to adapt to the quick switches with different opening and closing time requirements.

[0043] As Figure 5As shown, in order to connect the control board 3 to the thyristors in the control silicon stack 4 to control the conduction and turn-off of the thyristors, the energy storage capacitor 2 is connected to the fast switch through the thyristors of the control silicon stack 4. After the thyristors are turned on, the energy storage capacitor 2 releases energy to control the opening and closing of the fast switch, realizing the control of the fast switch. The control silicon stack 4 includes a support beam 41, a support insulator 42, a diode silicon stack, a thyristor silicon stack, and a second connecting copper bar 46. Two groups of support beams 41 and support insulators 42 are provided in the cabinet 1. The diode silicon stack and the thyristor silicon stack are arranged in upper and lower layers, and the diode silicon stack is located below the thyristor silicon stack and is connected through the second connecting copper bar 46.

[0044] The diode silicon stack is fixed on one of the support beams 41 through the corresponding support insulator 42. The power module 5 is connected to the energy storage capacitor 2 through the diode silicon stack.

[0045] The thyristor silicon stack is installed on the other support beam 41 through the corresponding support insulator 42, and the control board 3 is connected to the thyristor silicon stack to control the conduction and turn-off of the thyristors in the thyristor silicon stack. The energy storage capacitor 2 is connected to the fast switch through the thyristor silicon stack. When the control board 3 controls the thyristors to conduct, the energy storage capacitor 2 releases energy to control the opening and closing of the fast switch.

[0046] As Figure 5 shown, in order to facilitate the connection of wire harnesses, make the layout more reasonable and compact, and facilitate subsequent maintenance, the diode silicon stack includes a closing diode silicon stack 43, a first opening diode silicon stack 44, and a second opening diode silicon stack 45. The thyristor silicon stack includes a first opening thyristor silicon stack 48, a second opening thyristor silicon stack 47, and a closing thyristor silicon stack 49.

[0047] The energy storage capacitor 2 includes a closing capacitor 22, a first opening capacitor 23, and a second opening capacitor 24.

[0048] The closing diode silicon stack 43 is electrically connected to the closing thyristor silicon stack 49 and corresponds up and down. The closing capacitor 22 is electrically connected to the closing diode silicon stack 43, and the closing diode silicon stack 43 is located above the closing capacitor 22.

[0049] The first opening diode silicon stack 44 is electrically connected to the first opening thyristor silicon stack 48 and corresponds up and down. The first opening capacitor 23 is electrically connected to the first opening diode silicon stack 44, and the first opening diode silicon stack 44 is located above the first opening capacitor 23.

[0050] The second opening diode silicon stack 45 is electrically connected to the second opening thyristor silicon stack 47 and corresponds up and down. The second opening capacitor 24 is electrically connected to the second opening diode silicon stack 45 respectively, and the second opening diode silicon stack 45 is located above the second opening capacitor 24.

[0051] The first switching thyristor stack 48 and the second switching thyristor stack 47 are electrically connected in parallel and share a copper busbar for connecting the switching trigger line of the fast switch. The first switching thyristor stack 48 and the closing thyristor stack 49 share a copper busbar for releasing the residual energy of the repulsive coil of the fast switch.

[0052] Furthermore, the rectifier diodes provided in the diode stack and the trigger thyristors in the thyristor stack are arranged in dual redundancy to increase the reliability of the charge and discharge of the energy storage capacitor 2.

[0053] As Figure 6 shown, the discharge circuit 7 includes a discharge resistor 71, a voltmeter 72, and a discharge module 73. One end of the discharge resistor 71 is connected to the energy storage capacitor 2, and the other end is connected to the discharge module 73. When discharging the energy storage capacitor 2 before maintenance, first disconnect the air switch so that the power supply module 5 no longer charges the energy storage capacitor 2, and then turn on the discharge module 73. The energy storage capacitor 2 releases energy through the discharge resistor 71, and the voltmeter 72 is used to display the remaining voltage of the capacitor.

[0054] As Figure 1 shown, in order to make the structure compact, occupy a small floor area, and facilitate front and back door maintenance, a plurality of maintenance doors are provided on both the front and back sides of the cabinet 1.

[0055] Furthermore, in order to improve the rationality of the overall structure layout and the safety of maintenance, the operation panel of the control and protection device 6 and the voltmeter 72 of the discharge circuit 7 are arranged at the front of the cabinet 1 to facilitate status display and maintenance operations.

[0056] The working process of the present invention is as follows:

[0057] The control and protection device 6 sends switching instructions to the control board 3 through optical fiber communication. The thyristor stack of the control silicon stack 4 is controlled to conduct by the thyristor trigger module of the control board 3. That is, when the control board 3 controls the thyristor to conduct, the energy storage capacitor 2 releases energy to control the opening and closing of the fast switch. The energy storage capacitor 2 discharges the fast switch through the thyristor. The first switching thyristor stack 48 and the closing thyristor stack 49 are used to release the residual energy of the repulsive coil of the fast switch;

[0058] The input end of the power supply module 5 is connected to the external power cable through an air switch, and the output end is connected to the energy storage capacitor 2 through the diode stack of the control silicon stack 4, and continuously charges the energy storage capacitor 2. The structural design of the diode stack can increase the reliability of the charge and discharge of the energy storage capacitor.

[0059] In the present invention, the fast-switch energy storage control unit is independently arranged inside the cabinet, existing independently from the fast switch. The three-phase integrated layout inside the cabinet is at ground potential and is decoupled and installed from the high-voltage side of the fast switch, making maintenance convenient. Moreover, installation and maintenance do not require power outage operations in the substation. During maintenance, only the cabinet needs to be opened, without the need to remove it from the switch cabinet as in the prior art. The rectification and maintenance process is simpler and more efficient. It can be used for retrofitting fast switches in old power stations to reduce the harm of short-circuit current. The energy storage and control units are decentralized, with front and rear doors on the cabinet for convenient inspection and maintenance. The energy storage capacitors are connected in parallel with single-column cylindrical capacitors, and the capacitance value can be adjusted to adapt to fast switches with different breaking time requirements. The redundant configuration of the control unit improves the breaking reliability of the fast switch. The cabinet is designed according to the structure of a conventional secondary outdoor cabinet, with external incoming lines entering from the bottom of the cabinet, and the wiring harness interface with the fast switch adopting a high-protection aviation plug structure, making it applicable to different environmental conditions.

[0060] Therefore, the present invention overcomes the problems existing in the prior art, such as the complex structure of the fast-switch energy storage control unit, large floor area, difficult operation and maintenance, non-adjustable capacitance value of the capacitor, low reliability of the control unit, low protection level, and harsh requirements for the use environment.

[0061] Taking the ideal embodiments of the present invention as the inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A three-phase integrated fast switch energy storage control outdoor cabinet, characterized in that: It comprises a cabinet (1), an energy storage capacitor (2), a control board (3), a control silicon stack (4), a power module (5), a control and protection device (6) and a discharge circuit (7). The energy storage capacitor (2) is arranged at the lower part of the cabinet (1); the control board (3) and the control silicon stack (4) are arranged in a front-to-back manner and at the same height in the middle part of the cabinet (1) and are located above the energy storage capacitor (2); the power module (5), the control and protection device (6) and the discharge circuit (7) are arranged in an upper part of the cabinet (1); the power module (5) and the discharge circuit (7) are arranged in a front-to-back manner; the power module (5) is located above the control silicon stack (4); the control and protection device (6) is located above the discharge circuit (7); The power module (5) is connected to the energy storage capacitor (2) via the control silicon stack (4) and is used to charge the energy storage capacitor (2). The control board (3) is connected to the control silicon stack (4), and the energy storage capacitor (2) is also connected to the fast switch via the control silicon stack (4). The control board (3) is communicatively connected to the control and protection device (6). The energy storage capacitor (2) is connected to the discharge circuit (7) and is used to discharge the energy storage capacitor (2) during maintenance.

2. The three-phase integrated fast switch energy storage control outdoor cabinet according to claim 1 is characterized in that: The cabinet (1) is provided with a cable and an optical cable aviation plug interface (11) on the side, and the cable is connected to the input and output terminals of the control board (3) and the copper busbar of the control silicon stack (4), and is used for the energy storage capacitor (2) to discharge the fast switch. The position laser signal of the fast switch is connected to the laser sub-board of the control board (3) through the optical cable on the optical cable aviation plug interface (11). The lower part of the cabinet (1) is provided with a grounding bar (12) for connecting to the primary grounding bar. The cabinet bottom of the cabinet (1) is provided with a secondary optical cable and an optical cable inlet and outlet line interface (13) for connecting an external power cable and a communication optical cable.

3. The three-phase integrated fast switch energy storage control outdoor cabinet according to claim 1 or 2, characterized in that: The bottom frame of the cabinet (1) is provided with a cabinet transport forklift hole (14), which is a reserved interface for outdoor cabinet forklift transport.

4. The three-phase integrated fast switch energy storage control outdoor cabinet according to claim 1 is characterized in that: The energy storage capacitor (2) comprises a bottom support plate (21), a closing capacitor (22), a first opening capacitor (23), a second opening capacitor (24), an intermediate limiting plate (25) and a first connecting copper bar (26); the bottom support plate (21) is fixed to the bottom of the cabinet (1), and the closing capacitor (22), the first opening capacitor (23) and the second opening capacitor (24) are arranged on the bottom support plate (21); the intermediate limiting plate (25) arranged in the cabinet (1) is simultaneously sleeved on the outer periphery of the closing capacitor (22), the first opening capacitor (23) and the second opening capacitor (24) to prevent the capacitor from tipping over during the transportation of the cabinet; the closing capacitor (22), the first opening capacitor (23) and the second opening capacitor (24) are connected in series and parallel via the first connecting copper bar (26), and are electrically connected to the corresponding connection ends of the control silicon stack (4) and the discharge circuit (7).

5. The three-phase integrated fast switch energy storage control outdoor cabinet according to claim 4 is characterized in that: The closing capacitor (22), the first opening capacitor (23) and the second opening capacitor (24) are all formed by connecting a plurality of single-column cylindrical capacitors in parallel.

6. The three-phase integrated fast switch energy storage control outdoor cabinet according to claim 1 is characterized in that: The control silicon stack (4) comprises a support beam (41), a support insulator (42), a diode silicon stack, a thyristor silicon stack and a second connecting copper bar (46); two groups of support beams (41) and support insulators (42) are arranged in the cabinet (1); the diode silicon stack and the thyristor silicon stack are arranged in layers up and down; the diode silicon stack is located below the thyristor silicon stack and is connected via the second connecting copper bar (46); The diode silicon stack is fixed on one of the support beams (41) via a corresponding support insulator (42), and the power module (5) is connected to the energy storage capacitor (2) via the diode silicon stack. The thyristor silicon stack is installed on another support beam (41) via a corresponding support insulator (42), and a control board (3) is connected to the thyristor silicon stack to control the on and off of thyristors in the thyristor silicon stack. The energy storage capacitor (2) is connected to the fast switch via the thyristor silicon stack. When the control board (3) controls the thyristor to be turned on, the energy storage capacitor (2) releases energy to control the opening and closing of the fast switch.

7. The three-phase integrated fast switch energy storage control outdoor cabinet according to claim 6 is characterized in that: The diode silicon stack comprises a closing diode silicon stack (43), a first opening diode silicon stack (44) and a second opening diode silicon stack (45); the thyristor silicon stack comprises a first opening thyristor silicon stack (48), a second opening thyristor silicon stack (47) and a closing thyristor silicon stack (49); The energy storage capacitor (2) comprises a closing capacitor (22), a first opening capacitor (23) and a second opening capacitor (24), The closing diode silicon stack (43) is electrically connected to the closing thyristor silicon stack (49) and corresponds to each other up and down; the closing capacitor (22) is electrically connected to the closing diode silicon stack (43), and the closing diode silicon stack (43) is located above the closing capacitor (22); The first split gate diode silicon stack (44) is electrically connected to the first split gate thyristor silicon stack (48) and corresponds to each other vertically; the first split gate capacitor (23) is electrically connected to the first split gate diode silicon stack (44), and the first split gate diode silicon stack (44) is located above the first split gate capacitor (23); The second split gate diode silicon stack (45) is electrically connected to the second split gate thyristor silicon stack (47) and corresponds to each other vertically, the second split gate capacitor (24) is electrically connected to the second split gate diode silicon stack (45) respectively, and the second split gate diode silicon stack (45) is located above the second split gate capacitor (24). The first opening thyristor silicon stack (48) and the second opening thyristor silicon stack (47) are electrically connected in parallel and share a copper busbar for connecting an opening trigger line of a fast switch, and the first opening thyristor silicon stack (48) and the closing thyristor silicon stack (49) share a copper busbar for releasing residual energy of a repulsion coil of the fast switch.

8. The three-phase integrated fast switch energy storage control outdoor cabinet according to claim 6 is characterized in that: The rectifier diodes in the diode silicon stack and the trigger thyristors in the thyristor silicon stack are arranged in dual redundancy to increase the charging and discharging reliability of the energy storage capacitor (2).

9. The three-phase integrated fast switch energy storage control outdoor cabinet according to claim 1, characterized in that: The discharge circuit (7) comprises a discharge resistor (71), a voltmeter (72) and a discharge module (73); one end of the discharge resistor (71) is connected to the energy storage capacitor (2), and the other end is connected to the discharge module (73); when the discharge module (73) is turned on, the energy storage capacitor (2) releases energy through the discharge resistor (71), and the voltmeter (72) is used to display the residual voltage of the capacitor.

10. The three-phase integrated fast switch energy storage control outdoor cabinet according to claim 1, characterized in that: A plurality of inspection doors are provided on both the front and rear sides of the cabinet (1); the operation panel of the control and protection device (6) and the voltmeter (72) of the discharge circuit (7) are arranged at the front of the cabinet (1) to facilitate status display and inspection operations.

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