A central control device for a centrally located switchgear

Abstract

This invention discloses a centralized control device for a centrally located switchgear. The device includes: an integrated control module, terminal blocks, and a circuit breaker module; the integrated control module integrates a control board and a controller; the control board includes a closing / opening switch and a live display; the controller includes a closing / opening control circuit, a first signal acquisition circuit, and a live display circuit; the switch is electrically connected to the circuit breaker module via the closing / opening control circuit; the acquisition circuit is electrically connected to the display via the display circuit; the switch receives local commands and closing commands to enable the closing / opening control circuit to control the circuit breaker module to close according to the local closing commands; receives local commands and opening commands to enable the closing / opening control circuit to control the circuit breaker module to open according to the local opening commands; receives remote commands to enable the closing / opening control circuit to control the circuit breaker module to close according to the remote commands and remote closing signals; receives remote commands to enable the closing / opening control circuit to control the circuit breaker module to close according to the remote commands and remote opening signals.

Description

Technical Field

[0001] The present invention relates to the field of switchgear technology, and in particular to a central control device for a centrally located switchgear. Background Technology

[0002] Existing medium-voltage switchgear panels include multiple display units such as opening / closing transfer switches, remote / local transfer switches, and live / closed indicators. The control circuits corresponding to each display unit on the panel are varied, including opening / closing circuits and live / closed circuits. Because there is no unified standard for existing medium-voltage switchgear, components from different manufacturers are incompatible. Therefore, independent electrical design and wiring are required from the switchgear panel to each control circuit via the low-voltage box terminal blocks. This complicates the wiring process, consumes a large amount of wire and cable, and demands a high level of professionalism and meticulousness from wiring personnel, as well as stringent requirements for subsequent wiring verification. Furthermore, the existing medium-voltage switchgear panels use two separate opening / closing transfer switches and remote / local transfer switches, resulting in low space utilization and high costs on the panel. Summary of the Invention

[0003] This invention provides a central control device for a centrally located switchgear, which integrates the control panel and controller into a single integrated control module. At the same time, the opening and closing switch and the remote and local switching switch on the control panel are integrated into a single switch, thus making the integrated control module more space-efficient and lower in cost.

[0004] To achieve the above objectives, embodiments of the present invention provide a centralized control device for a centrally located switchgear, the device comprising: an integrated control module, a terminal block, and a circuit breaker module; the integrated control module is connected to the circuit breaker module via the terminal block; the integrated control module integrates a control board and a controller;

[0005] The control panel includes a closing / opening selector switch and a live display; the controller includes a closing / opening control circuit, a first signal acquisition circuit, and a live display circuit; the closing / opening selector switch and the closing / opening pressure plate are electrically connected to the circuit breaker module through the closing / opening control circuit; the first signal acquisition circuit is electrically connected to the live display circuit through the live display circuit.

[0006] The first signal acquisition circuit is used to detect the input power information of the central switch cabinet;

[0007] The closing / opening switch is configured to receive local commands and closing commands so that the closing / opening control circuit controls the circuit breaker module to close according to the local commands and closing commands; it is also configured to receive local commands and opening commands so that the closing / opening control circuit controls the circuit breaker module to open according to the local commands and opening commands; it is also configured to receive remote commands so that the closing / opening control circuit controls the circuit breaker module to close according to the remote commands and remote closing signals; and it is also configured to receive remote commands so that the closing / opening control circuit controls the circuit breaker module to close according to the remote commands and remote opening signals.

[0008] Optionally, the control panel further includes: a temperature and humidity controller and function indicator lights; the controller further includes: a temperature and humidity control loop and a status indication loop;

[0009] The second signal acquisition circuit is electrically connected to the temperature and humidity controller through the temperature and humidity control circuit; the third signal acquisition circuit is electrically connected to the function indicator light through the status indication circuit.

[0010] The second signal acquisition circuit is used to detect the temperature and humidity information of the central switch cabinet; the third signal acquisition circuit is used to detect the status information of the circuit breaker module.

[0011] Optionally, the closing / opening changeover switch includes a single-pole four-throw rotary switch.

[0012] Optionally, the closing and opening control circuit includes: local signal terminal, closing signal terminal, opening signal terminal, remote signal terminal, remote closing signal terminal, remote opening signal terminal, closing pressure plate, opening pressure plate, circuit breaker closing coil and circuit breaker opening coil;

[0013] The first end of the local signal terminal and the first end of the remote signal terminal are electrically connected to the high voltage source; the second end of the local signal terminal is electrically connected to the first end of the closing signal terminal, and the second end of the closing signal terminal is electrically connected to the closing coil of the circuit breaker.

[0014] The second end of the local signal terminal is electrically connected to the first end of the trip signal terminal; the second end of the trip signal terminal is electrically connected to the trip coil of the circuit breaker.

[0015] The second end of the remote signal terminal is electrically connected to the first end of the remote closing signal terminal and the first end of the remote opening signal terminal; the second end of the remote closing signal terminal is electrically connected to the circuit breaker closing coil through the closing pressure plate.

[0016] The second end of the remote control trip signal terminal is electrically connected to the circuit breaker trip coil through the closing pressure plate.

[0017] Optionally, the controller further includes: a communication loop;

[0018] The communication circuit is connected to the closing and opening control circuit and is used to send the position status information of the closing and opening switch to the background monitoring equipment; it is also used to send the engagement status information of the closing pressure plate and the opening pressure plate to the background monitoring equipment.

[0019] Optionally, the communication circuit is also connected to the third signal acquisition circuit to send the status information of the circuit breaker module to the background monitoring equipment.

[0020] Optionally, the communication circuit is also communicatively connected to the second signal acquisition circuit and the temperature and humidity control circuit, for sending the temperature and humidity information of the central switch cabinet and the control information of the temperature and humidity control circuit to the background monitoring equipment.

[0021] Optionally, the temperature and humidity control loop includes a heating control loop and a fan control loop.

[0022] Optionally, the live display circuit includes a main busbar live display circuit and a cable compartment live display circuit;

[0023] The controller also includes a lockout circuit.

[0024] Optionally, the controller further includes: a fourth signal acquisition circuit and a relay protection control circuit;

[0025] The central control unit of the central switchgear also includes: a relay protection device;

[0026] The fourth signal acquisition circuit is electrically connected to the relay protection device through the relay protection control circuit; the fourth signal acquisition circuit is used to detect and output the current and voltage information of the central switch cabinet so that the relay protection control circuit outputs a relay protection signal to the relay protection device according to the current and voltage information.

[0027] In this embodiment of the invention, the control panel includes a closing / opening selector switch and a live display; the controller includes a closing / opening control circuit, a first signal acquisition circuit, and a live display circuit; the closing / opening selector switch is electrically connected to the circuit breaker module through the closing / opening control circuit; the first signal acquisition circuit is electrically connected to the live display circuit through the live display circuit; thus, by integrating the control panel and the controller into an integrated control module; the integrated control module is connected to the circuit breaker module through the terminal block; this avoids the problem of complicated wiring caused by the need for independent electrical design and wiring work for each control circuit from the switch cabinet control panel through the terminal block of the low-voltage box in the prior art;

[0028] In addition, the closing / opening transfer switch receives local commands and closing commands to enable the closing / opening control circuit to control the circuit breaker module to close according to the local commands and closing commands; it also receives local commands and opening commands to enable the closing / opening control circuit to control the circuit breaker module to open according to the local commands and opening commands; it also receives remote commands to enable the closing / opening control circuit to control the circuit breaker module to close according to the remote commands and remote closing signals; and it also receives remote commands to enable the closing / opening control circuit to control the circuit breaker module to close according to the remote commands and remote opening signals. In this way, a single closing / opening transfer switch realizes the functions of local closing, local opening, remote closing, and remote opening, improving the space utilization of the integrated control module and reducing costs. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of a central control device for a centrally located switchgear provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of a closing / opening transfer switch provided in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the specific structure of a central control device for a centrally located switchgear provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the closing and opening control circuit in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of a central control device for a centrally located switchgear provided in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the specific structure of another centrally located switchgear control device provided in an embodiment of the present invention. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0036] Figure 1 This is a schematic diagram of the structure of a central control device for a centrally located switchgear provided in an embodiment of the present invention, as shown below. Figure 1As shown, the central control device for the central switchgear includes: an integrated control module 10, a terminal block 20, and a circuit breaker module 30; the integrated control module 10 is connected to the circuit breaker module 30 through the terminal block 20; the integrated control module 10 integrates a control board 11 and a controller 12.

[0037] The control panel 11 includes a closing / opening selector switch 111 and a live display 112; the controller 12 includes a closing / opening control circuit 121, a first signal acquisition circuit 122, and a live display circuit 123; the closing / opening selector switch 111 is electrically connected to the circuit breaker module 30 through the closing / opening control circuit 121; the first signal acquisition circuit 122 is electrically connected to the live display 112 through the live display circuit 123;

[0038] The first signal acquisition circuit 122 is used to detect the input power information of the central switch cabinet;

[0039] The closing / opening transfer switch 111 is used to receive local commands and closing commands so that the closing / opening control circuit 121 controls the circuit breaker module 30 to close according to the local commands and closing commands; it is also used to receive local commands and opening commands so that the closing / opening control circuit 121 controls the circuit breaker module 30 to open according to the local commands and opening commands; it is also used to receive remote commands so that the closing / opening control circuit controls the circuit breaker module 30 to close according to the remote commands and remote closing signals; it is also used to receive remote commands so that the closing / opening control circuit controls the circuit breaker module 30 to close according to the remote commands and remote opening signals.

[0040] In this embodiment, the closing / opening transfer switch 111, upon receiving various user commands, outputs different commands—remote closing, remote opening, local closing, and local opening—to the closing / opening control circuit 121. The closing / opening control circuit 121 then performs these different functions, causing the circuit breaker module 30 to close or open. When the circuit breaker module 30 is closed, the central switchgear outputs power; when the circuit breaker module 30 is open, the central switchgear does not output power. The first signal acquisition circuit 122 detects the input power information of the central switchgear and sends this information to the live display circuit 123, thereby displaying the power information in real time.

[0041] Specifically, the power information includes the main busbar energization information and the cable compartment energization information; the energization display circuit 123 includes the main busbar energization display circuit and the cable compartment energization display circuit; in this way, the main busbar energization display circuit and the cable compartment energization display circuit respectively send the main busbar energization information and the cable compartment energization information to the energization display 112, thereby displaying different types of power information in real time.

[0042] It should be noted that the control panel 11 can be equipped with a closing / opening changeover switch 111 and a live display 112; the controller 12 includes a closing / opening control circuit 121, a first signal acquisition circuit 122, and a live display circuit 123; of course, other devices can also be installed on the control panel 11, and the controller 12 may also include other circuits according to functional requirements, which is not limited here; by integrating the control panel 11 and the controller 12 into an integrated control module 10; the integrated control module 10 is connected to the circuit breaker module 30 through the terminal block 20; this avoids the problem of complicated wiring caused by the need for independent electrical design and wiring work between the switch cabinet control panel 11 and each control circuit through the terminal block of the low voltage box in the prior art;

[0043] In addition, the closing / opening changeover switch 111 on the control panel 11 receives local commands and closing commands so that the closing / opening control circuit 121 controls the circuit breaker module 30 to close according to the local commands and closing commands; at the same time, it receives local commands and opening commands so that the closing / opening control circuit 121 controls the circuit breaker module 30 to open according to the local commands and opening commands; at the same time, it receives remote commands so that the closing / opening control circuit 121 controls the circuit breaker module 30 to close according to the remote commands and remote closing signals; and at the same time, it receives remote commands so that the closing / opening control circuit 121 controls the circuit breaker module 30 to close according to the remote commands and remote opening signals. In this way, the functions of local closing, local opening, remote closing, and remote opening are realized by using a single closing / opening changeover switch 11, which improves the space utilization of the integrated control module, reduces costs, and avoids the problem of low space utilization caused by using multiple changeover switches 11 to realize the functions of local closing, local opening, remote closing, and remote opening in the prior art.

[0044] Optional, Figure 2 This is a schematic diagram of a closing / opening transfer switch provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the closing / opening changeover switch 111 includes a single-pole four-throw rotary switch, model LW26-20; wherein, the closing / opening changeover switch 111 is a single-pole four-throw rotary switch, so the single-pole four-throw rotary switch can include four states, corresponding to local, remote, closing and opening respectively; thus, local closing, local opening, remote closing and remote opening functions can be completed on the same switch.

[0045] Optionally, based on the above embodiments, further refinement and optimization can be achieved. Figure 3 This is a schematic diagram of another central control device for a switchgear provided in an embodiment of the present invention, as shown below. Figure 3As shown, the control panel 11 also includes: a temperature and humidity controller 113 and a function indicator light 114; the controller 12 also includes: a second signal acquisition circuit 124, a temperature and humidity control circuit 125, a third signal acquisition circuit 126 and a status indicator circuit 127.

[0046] The second signal acquisition circuit 124 is electrically connected to the temperature and humidity controller 113 via the temperature and humidity control circuit 125; the third signal acquisition circuit 126 is electrically connected to the function indicator light 114 via the status indication circuit 127.

[0047] The second signal acquisition circuit 124 is used to detect the temperature and humidity information of the central switch cabinet; the third signal acquisition circuit 126 is used to detect the status information of the circuit breaker module 30.

[0048] During the power output process of the central switchgear, the third signal acquisition circuit 126 can detect the status information of the circuit breaker module 30 in real time. The status information includes the open position, closed position and energy storage status of the circuit breaker module 30. The status information of the circuit breaker module 30 is then sent to the function indicator 114 through the status indication circuit 127. The function indicator 114 can indicate different status information of the circuit breaker module 30.

[0049] During the power output process, the central switchgear needs to maintain a certain temperature and humidity. In this embodiment, the target temperature and humidity can be set on the temperature and humidity controller 113 of the control panel 11, and the second signal acquisition circuit 124 can detect the temperature and humidity information of the central switchgear. The temperature and humidity control circuit 125 can control the central switchgear to reach the target temperature and humidity based on the temperature and humidity information detected by the second signal acquisition circuit 124. Specifically, the temperature and humidity control circuit 125 includes a heating control circuit and a fan control circuit. When the detected temperature and humidity information of the central switchgear does not reach the target temperature and humidity, the heating control circuit can control the heating to make the temperature and humidity information of the central switchgear reach the target temperature and humidity. When the detected temperature and humidity information of the central switchgear exceeds the target temperature and humidity, the fan control circuit can control the heating to reduce the temperature and humidity information of the central switchgear to the target temperature.

[0050] When a temperature and humidity controller 113 and a function indicator light 114 are added to the control panel 11; and a second signal acquisition circuit 124, a third signal acquisition circuit 126, a temperature and humidity control circuit 125, and a status indication circuit 127 are added to the controller 12; by integrating the control panel 11 and the controller 12 into an integrated control module 10; and by connecting the integrated control module 10 to the circuit breaker module 30 through the terminal block 20, the problem of complicated wiring caused by the need for independent electrical design and wiring work from the switch cabinet control panel 11 to each control circuit through the terminal block of the low-voltage box is avoided in the prior art. This greatly reduces the complexity of the wiring work and shortens the production cycle.

[0051] Optional, Figure 4 This is a schematic diagram of the closing and opening control circuit in an embodiment of the present invention; as shown below. Figure 4 As shown, the closing and opening control circuit 121 includes: local signal terminal 1-2, closing signal terminal 5-6, opening signal terminal 7-8, remote signal terminal 3-4, remote closing signal terminal 1211, remote opening signal terminal 1212, closing pressure plate 1213, opening pressure plate 1214, circuit breaker closing coil 1215, and circuit breaker opening coil 1216;

[0052] The first end of the local signal terminal 1-2 and the first end of the remote signal terminal 3-4 are electrically connected to the high voltage source; the second end of the local signal terminal 1-2 is electrically connected to the first end of the closing signal terminal 5-6, and the second end of the closing signal terminal 5-6 is electrically connected to the circuit breaker closing coil 1215.

[0053] The second end of the local signal terminal 1-2 is electrically connected to the first end of the trip signal terminal 7-8; the second end of the trip signal terminal 7-8 is electrically connected to the circuit breaker trip coil 1216.

[0054] The second end of the remote signal terminal 3-4 is electrically connected to the first end of the remote closing signal terminal 1211 and the first end of the remote opening signal terminal 1212; the second end of the remote closing signal terminal 1211 is electrically connected to the circuit breaker closing coil 1215 through the closing pressure plate 1213.

[0055] The second end of the remote control trip signal terminal 1212 is electrically connected to the circuit breaker trip coil 1216 through the trip pressure plate 1214.

[0056] Specifically, refer to Figure 2 and Figure 4In this embodiment, the control principle of the closing and opening control circuit 121 is as follows: When the closing and opening switch 111 receives a local command, when the closing and opening switch 111 rotates to the first preset angle, the closing and opening switch is in the local state, and the local signal terminals 1-2 remain connected; then when the closing and opening switch 111 receives a closing command, when the closing and opening switch 111 rotates to the second preset angle, the closing and opening switch is in the closed state, the closing signal terminals 5-6 remain connected, and at the same time, the local signal terminals 1-2 remain momentarily disconnected. However, since the signal on the local signal terminal 2 is still maintained at this time, the circuit breaker closing coil 1215 is energized, thereby causing the circuit breaker module 30 to close.

[0057] Generally, when the closing / opening switch 111 rotates to the second preset angle, it will automatically reset to the first preset angle, and the closing / opening switch 111 will be in the local state, with the local signal terminals 1-2 remaining connected. Then, when the closing / opening switch 111 receives a tripping command, it rotates to the third preset angle, and the closing / opening switch is in the tripping state, with the tripping signal terminals 7-8 remaining connected. At the same time, the local signal terminals 1-2 remain momentarily disconnected, but since the signal on the local signal terminal 2 is still maintained at this time, the circuit breaker tripping coil 1216 is energized, thereby causing the circuit breaker module 30 to trip. After tripping, the closing / opening switch 111 will automatically reset to the local state at the first preset angle.

[0058] When the closing / opening switch 111 receives a remote command, and rotates to the fourth preset angle, the closing / opening switch 111 is in the remote state. If a remote closing signal is received at this time, the remote closing signal terminal 1211 remains engaged, thereby enabling the circuit breaker module 30 to close remotely. If a remote opening signal is received at this time, the remote opening signal terminal 1212 remains engaged, thereby enabling the circuit breaker module 30 to open remotely. In this way, the closing / opening switch 111 realizes the functions of local closing, local opening, remote closing, and remote opening, avoiding the problem of low space utilization caused by using multiple switches 11 to realize the functions of local closing, local opening, remote closing, and remote opening in the prior art.

[0059] It should be noted that the closing pressure plate 1213 can control the on / off state of the remote closing control circuit; the opening pressure plate 1214 can control the on / off state of the remote opening control circuit. In some emergency situations, the on / off state of the remote closing control circuit and the remote opening control circuit can be controlled by controlling the on / off state of the closing pressure plate 1213 and the opening pressure plate 1214, thereby playing a role in safety protection.

[0060] Optionally, 5 is a structural schematic diagram of a central control device for a centrally located switchgear provided in an embodiment of the present invention, such as... Figure 5As shown, the controller 12 also includes: a communication circuit 128; the communication circuit 128 is connected to the closing and opening control circuit 121 and is used to send the position status information of the closing and opening switch to the background monitoring equipment; and to send the engagement status information of the closing pressure plate and the opening pressure plate to the background monitoring equipment.

[0061] The communication circuit 128 can send the position status information of the closing and opening switch to the background monitoring equipment; at the same time, it can send the engagement status information of the closing pressure plate and the opening pressure plate to the background monitoring equipment. In this way, the background monitoring equipment can output remote closing signals and remote opening information based on the actual position status information of the closing and opening switch and the engagement status information of the closing pressure plate and the opening pressure plate.

[0062] Optional, continue to participate Figure 5 The communication circuit 128 is also connected to the third signal acquisition circuit 126, and is used to send the status information of the circuit breaker module 30 to the background monitoring equipment. Specifically, the communication circuit 128 sends the status information of the circuit breaker module 30 to the background monitoring equipment, thereby enabling remote control of the closing and opening of the circuit breaker module 30 according to actual needs.

[0063] Optional, continue to participate Figure 5 The communication circuit 128 is also connected to the second signal acquisition circuit 124 and the temperature and humidity control circuit 125, and is used to send the temperature and humidity information of the central switchgear and the control information of the temperature and humidity control circuit to the background monitoring equipment. Specifically, the communication circuit 128 can also send the temperature and humidity information of the central switchgear and the control information of the temperature and humidity control circuit to the background monitoring equipment, such as monitoring the temperature and humidity information of the central switchgear, the working status of the heating control circuit when the temperature and humidity information is lower than the target temperature, and the working status of the fan control circuit when the temperature and humidity information is higher than the target temperature. In this way, the background monitoring equipment can effectively manage the temperature control information of the central switchgear.

[0064] Optionally, the controller 12 also includes a locking circuit (not specifically shown in the figure). It is understood that the locking circuit can keep the closing and opening control circuit in a locked state; that is, when the closing and opening control circuit 121 is working, the locking circuit can disable the closing and opening control circuit. The locking circuit is electrically connected to the communication circuit, allowing the unlocking and locking status of the locking circuit to be sent to the background monitoring equipment in real time.

[0065] Optional, Figure 6 This is a schematic diagram of the structure of a central control device for a centrally located switchgear provided in an embodiment of the present invention, as shown below. Figure 6As shown, the controller 12 also includes: a fourth signal acquisition circuit 129 and a relay protection control circuit 130; the central switchgear centralized control device also includes: a relay protection device 40; the fourth signal acquisition circuit 129 is electrically connected to the relay protection device 40 through the relay protection control circuit 130; the fourth signal acquisition circuit 129 is used to detect and output the current and voltage information of the central switchgear so that the relay protection control circuit 130 outputs a relay protection signal to the relay protection device 40 according to the current and voltage information.

[0066] During the power output process of the central switchgear, the fourth signal acquisition circuit 129 can detect and output the current and voltage information of the central switchgear. In this way, the relay protection control circuit 130 can output a relay protection signal to the relay protection device 40 based on the current and voltage information. For example, when the current and voltage information are greater than the preset current and preset voltage values, that is, when an overcurrent fault, overvoltage fault or ground fault occurs, a relay protection signal can be sent to the relay protection device 40, thereby protecting the power output of the relay protection device 40.

[0067] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A centralized control device for a centrally located switchgear, characterized in that, include: An integrated control module, terminal block, and circuit breaker module; the integrated control module is connected to the circuit breaker module via the terminal block; the integrated control module integrates a control board and a controller. The control panel includes a closing / opening selector switch and a live display; the controller includes a closing / opening control circuit, a first signal acquisition circuit, and a live display circuit; the closing / opening selector switch is electrically connected to the circuit breaker module through the closing / opening control circuit; the first signal acquisition circuit is electrically connected to the live display circuit through the live display circuit. The first signal acquisition circuit is used to detect the input power information of the central switch cabinet; The closing / opening switch is configured to receive local commands and closing commands to enable the closing / opening control circuit to control the circuit breaker module to close according to the local commands and closing commands; it is also configured to receive local commands and opening commands to enable the closing / opening control circuit to control the circuit breaker module to open according to the local commands and opening commands; it is further configured to receive remote commands to enable the closing / opening control circuit to control the circuit breaker module to close according to the remote commands and remote closing signals; and it is also configured to receive remote commands to enable the closing / opening control circuit to control the circuit breaker module to close according to the remote commands and remote opening signals. The closing / opening changeover switch includes a single-pole four-throw rotary switch; The closing and opening control circuit includes: local signal terminal, closing signal terminal, opening signal terminal, remote signal terminal, remote closing signal terminal, remote opening signal terminal, closing pressure plate, opening pressure plate, circuit breaker closing coil and circuit breaker opening coil; The first end of the local signal terminal and the first end of the remote signal terminal are electrically connected to the high voltage source; the second end of the local signal terminal is electrically connected to the first end of the closing signal terminal, and the second end of the closing signal terminal is electrically connected to the closing coil of the circuit breaker. The second end of the local signal terminal is electrically connected to the first end of the trip signal terminal; the second end of the trip signal terminal is electrically connected to the trip coil of the circuit breaker. The second end of the remote signal terminal is electrically connected to the first end of the remote closing signal terminal and the first end of the remote opening signal terminal; the second end of the remote closing signal terminal is electrically connected to the circuit breaker closing coil through the closing pressure plate. The second end of the remote control trip signal terminal is electrically connected to the circuit breaker trip coil through the closing pressure plate; Specifically, when a grounding command is received, the single-pole four-throw rotary switch rotates to a first preset angle, and the single-pole four-throw rotary switch is in a local state; the local signal terminal remains engaged; when a closing command is subsequently received, the single-pole four-throw rotary switch rotates to a second preset angle, and the single-pole four-throw rotary switch is in a closed state; the closing signal terminal remains engaged. When the single-pole four-throw rotary switch rotates to the second preset angle, it will automatically reset to the local state; when a tripping command is subsequently received, the single-pole four-throw rotary switch rotates to the third preset angle, and the single-pole four-throw rotary switch is in the tripping state; the tripping signal terminal remains engaged; When the single-pole four-throw rotary switch is rotated to the third preset angle, it will automatically reset to the local state. When the single-pole four-throw rotary switch receives a remote command, and the single-pole four-throw rotary switch rotates to the fourth preset angle, the single-pole four-throw rotary switch is in the remote state.

2. The centralized control device for a centrally located switchgear according to claim 1, characterized in that, The control panel also includes: a temperature and humidity controller and function indicator lights; the controller also includes: a second signal acquisition circuit, a third signal acquisition circuit, a temperature and humidity control circuit, and a status indication circuit. The second signal acquisition circuit is electrically connected to the temperature and humidity controller through the temperature and humidity control circuit; the third signal acquisition circuit is electrically connected to the function indicator light through the status indication circuit. The second signal acquisition circuit is used to detect the temperature and humidity information of the central switch cabinet; the third signal acquisition circuit is used to detect the status information of the circuit breaker module.

3. The centralized control device for a centrally located switchgear according to claim 2, characterized in that, The controller further includes: a communication circuit; The communication circuit is connected to the closing and opening control circuit and is used to send the position status information of the closing and opening switch to the background monitoring equipment; it is also used to send the engagement status information of the closing pressure plate and the opening pressure plate to the background monitoring equipment.

4. The centralized control device for a centrally located switchgear according to claim 3, characterized in that, The communication circuit is also connected to the third signal acquisition circuit, and is used to send the status information of the circuit breaker module to the background monitoring equipment.

5. The centralized control device for a centrally located switchgear according to claim 3, characterized in that, The communication circuit is also connected to the second signal acquisition circuit and the temperature and humidity control circuit, and is used to send the temperature and humidity information of the central switch cabinet and the control information of the temperature and humidity control circuit to the background monitoring equipment.

6. The centralized control device for a centrally located switchgear according to claim 5, characterized in that, The temperature and humidity control circuit includes a heating control circuit and a fan control circuit.

7. The centralized control device for a centrally located switchgear according to claim 1, characterized in that, The live display circuit includes a main busbar live display circuit and a cable compartment live display circuit; The controller also includes a lockout circuit.

8. The centralized control device for a centrally located switchgear according to claim 1, characterized in that, The controller also includes: a fourth signal acquisition circuit and a relay protection control circuit; The central control unit of the central switchgear also includes: a relay protection device; The fourth signal acquisition circuit is electrically connected to the relay protection device through the relay protection control circuit; the fourth signal acquisition circuit is used to detect and output the current and voltage information of the central switch cabinet so that the relay protection control circuit outputs a relay protection signal to the relay protection device according to the current and voltage information.

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