Anti-misoperation locking method, device and equipment and storage medium

Abstract

The invention relates to the technical field of misoperation-preventive locking, and discloses a misoperation-preventive locking method, device and equipment and a storage medium, which are used for improving the operation efficiency. The anti-misoperation locking method comprises the following steps: detecting the maintenance state of a vehicle at the position of an overhead line system in a garage, intelligently judging and executing corresponding power failure or power transmission locking operation, when power failure occurs, ensuring that a direct-current contactor is in a closed state, opening a contact disconnecting link, opening the direct-current contactor, and then disconnecting a three-station disconnecting link to realize power failure; during power transmission, the direct-current contactor and the contact disconnecting link are ensured to be in an opening state, after the three-station disconnecting link is connected, the direct-current contactor is determined to be in a closing state, then the contact disconnecting link is closed, and finally the direct-current contactor is opened to complete power transmission.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-mistaken locking, and in particular to an anti-mistaken locking method, device, equipment and storage medium. Background Art

[0002] The vehicle depot or parking lot of rail transit is mainly used for vehicle maintenance and repair. When the subway vehicle completes a full day of operation, the vehicle will drive to the parking garage and then lower the pantograph. At the same time, the online isolation knife switch of each track is opened and the power is cut off. After the power is tested and there is no electricity, the contact network is connected to the ground wire. Then the vehicle maintenance workers enter the garage to inspect the vehicle. With the continuous improvement of the automation and intelligence of subway maintenance operations, online isolation knife switches, grounding knife switches, etc. can be remotely controlled, which greatly improves the efficiency of on-site power outages and grounding wires. However, it also brings certain problems. When the vehicle operation is over, it drives to the garage. Since the status of the vehicle pantograph is manually confirmed, the back-end personnel are notified by phone or other means to confirm whether the online isolation knife can be opened. Therefore, the status of the vehicle pantograph is often not confirmed, or there are errors in information transmission, resulting in the background opening the online isolating switch without confirming that the vehicle has lowered the pantograph or incorrectly judging whether the vehicle has lowered the pantograph; since the vehicle has not lowered the pantograph, the contact network is still energized, and once the isolating switch is opened, it will disconnect with load. Since the online isolating switch is an ordinary isolating switch without an arc extinguishing function, the isolating switch will arc and burn; therefore, in order to avoid this situation, the current on-site method is still to manually confirm the pantograph lowering status and communicate it by telephone. This method mainly relies on manual labor and is prone to inaccurate status confirmation or inadequate information transmission; or install a camera to monitor the status of the vehicle pantograph, but the method requires the addition of corresponding cameras, video recorders, monitoring terminals, etc. on site, further increasing the on-site maintenance and operation costs. Due to manual judgment of the vehicle's pantograph lowering status, a long confirmation time is required and errors are prone to occur, resulting in low operating efficiency. Summary of the invention

[0003] The present invention provides an anti-mislocking method, device, equipment and storage medium to solve the problem in the prior art that the vehicle's bow lowering state is manually judged, resulting in low operating efficiency.

[0004] The first aspect of the present invention provides a method for preventing mis-locking, wherein the visualized grounding load switch device comprises a DC contactor, a connecting knife switch and a three-position knife switch, wherein the closing auxiliary point of the DC contactor is connected in series with the connecting knife switch, and the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are connected in series with the three-position knife switch, and the method comprises: detecting the maintenance status of a vehicle located at a position of an in-depot contact network, and determining the type of locking operation on the in-depot contact network based on the maintenance status; when the locking operation type is a power failure locking operation, detecting whether the closing auxiliary point of the DC contactor is in a closed state, and if the closing auxiliary point of the DC contactor is in a closed state, controlling the connecting knife switch to perform an opening operation, detecting the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch Whether the split auxiliary point of the DC contactor is in a closed state, if the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are both in a closed state, the three-position knife switch is controlled to perform a connection position disconnection operation to achieve a power outage operation; when the locking operation type is a power supply locking operation, the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are detected to be in a closed state, if the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are both in a closed state, the three-position knife switch is controlled to perform a connection position connection operation, and the closing auxiliary point of the DC contactor is detected to be in a closed state, if the closing auxiliary point of the DC contactor is in a closed state, the connecting knife switch is controlled to perform a closing operation, and then the DC contactor is controlled to perform an opening operation to achieve a power supply operation.

[0005] In a feasible implementation manner, the contact knife switch includes a closing control circuit and an opening control circuit connected in parallel, and a first motor connected in series with the closing control circuit and the opening control circuit, and the closing auxiliary point of the DC contactor is connected in series with the closing control circuit and the opening control circuit respectively, and the controlling the contact knife switch to perform the opening operation includes:

[0006] Detect whether the closing control circuit and the opening control circuit are in the initial state of the power failure lockout operation; if so, control the opening control circuit to close, and under the drive of the opening control circuit, the first motor rotates in the opposite direction to realize the opening control of the contact switch.

[0007] In a feasible implementation manner, the closing control circuit includes a closing switch, a closing coil and a closing contact, and the opening control circuit includes an opening switch, an opening coil and an opening contact. When the closing coil of the connecting knife switch is energized, the opening contact of the connecting knife switch is driven to disconnect, and when the opening coil of the connecting knife switch is energized, the closing contact of the connecting knife switch is driven to disconnect. The detection of whether the opening control circuit and the closing control circuit are in the initial state of the power outage locking operation includes: detecting whether the closing switch and the opening switch of the connecting knife switch are both in a disconnected state; if so, detecting whether the closing contact and the opening contact of the connecting knife switch are in a closed state; if so, determining whether the closing control circuit and the opening control circuit are both in the initial state of the power outage operation.

[0008] In a feasible embodiment, the connecting knife switch also includes a first control contact and a second control contact, the first control contact controls the reverse rotation of the first motor to drive the connecting knife switch to open, the second control contact controls the forward rotation of the first motor to drive the connecting knife switch to close, and when the closing control circuit is disconnected, the first control contact is closed, when the closing control circuit is connected, the first control contact is disconnected, when the opening control circuit is disconnected, the second control contact is closed, when the opening control circuit is connected, the second control contact is disconnected, the control of the opening control circuit is closed, and under the drive of the opening control circuit, the first motor of the connecting knife switch rotates reversely, including: controlling the opening switch of the connecting knife switch to close to drive the opening coil to operate, the closing contact is disconnected and the second control contact is disconnected, so as to realize the reverse rotation of the first motor of the connecting knife switch.

[0009] In a feasible embodiment, the three-position knife switch includes an on-position closing control circuit and an on-position opening control circuit connected in parallel, the on-position closing control circuit includes an on-position closing switch, an on-position closing coil and an on-position closing contact, the on-position opening control circuit includes an on-position opening switch, an on-position opening coil and an on-position opening contact, and the controlling of the three-position knife switch to perform an on-position connection operation includes: detecting whether the on-position closing control circuit and the on-position opening control circuit are both in the initial state of the power supply locking operation; if so, controlling the on-position closing switch to close, so as to drive the on-position closing coil to operate, so as to disconnect the on-position opening contact, thereby realizing the on-position closing operation of the three-position knife switch.

[0010] In a feasible embodiment, the visual grounding load switch device also includes a first transfer switch and a second transfer switch connected in series. Before detecting the maintenance status of the vehicle located at the contact network position in the depot, it also includes: when receiving a local control signal, controlling the on-site position of the first transfer switch to be connected based on the local control signal, and controlling the sequential control position or the sub-control position of the second transfer switch to be connected, so as to perform sequential control operation or sub-control operation.

[0011] In a feasible implementation manner, the visual grounding load switch device also includes a sequential control circuit provided with the second transfer switch, a power supply button and a power off button, wherein the power supply button and the power off button are connected in parallel and connected in series with the second transfer switch; a sub-control control circuit is provided with the second transfer switch, a contactor closing button, a contactor opening button, a contact knife closing button, a contact knife opening button, a connection position closing button, a connection position opening button, a connection position closing button and a connection position opening button, wherein the contactor closing button, the contactor opening button, the contact knife closing button, the contact knife opening button, the connection position closing button and the connection position opening button are connected in parallel and connected in series with the second transfer switch, and the connection position closing button and the connection position opening button are connected in parallel and connected to the first transfer switch. series; when the visual grounding load switch device is subjected to sequential control operation, the power supply button or the power off button is triggered to output a corresponding first touch signal, and the visual grounding load switch device is controlled to perform corresponding control actions in a preset order based on the first touch signal to complete the power supply or power off operation; when the visual grounding load switch device is subjected to separate control operation, the contactor closing button, the contactor opening button, the contact knife closing button, the contact knife opening button, the connection position closing button, the connection position opening button, the connection position closing button or the connection position opening button are triggered separately and step by step to output a corresponding second touch signal, and the DC contactor, the contact knife switch or the three-position knife switch are controlled to independently perform corresponding opening and closing operations based on the second touch signal.

[0012] The second aspect of the present invention provides an anti-mistaken locking device, comprising: a determination module, for detecting the maintenance status of a vehicle located at a position of an in-depot contact network, and determining the type of locking operation on the in-depot contact network based on the maintenance status; a power failure operation module, for, when the locking operation type is a power failure locking operation, detecting whether the closing auxiliary point of the DC contactor is in a closed state, and if the closing auxiliary point of the DC contactor is in a closed state, controlling the connecting knife switch to perform an opening operation, detecting whether the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state, and if both the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state state, then control the three-position knife switch to perform the connection position disconnection operation to realize the power outage operation; the power supply operation module is used to detect whether the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are in a closed state when the locking operation type is the power supply locking operation. If the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are both in a closed state, control the three-position knife switch to perform the connection position connection operation, detect whether the closing auxiliary point of the DC contactor is in a closed state, if the closing auxiliary point of the DC contactor is in a closed state, control the connecting knife switch to perform the closing operation, and then control the DC contactor to perform the opening operation to realize the power supply operation.

[0013] The third aspect of the present invention provides a computer device, comprising: a memory and at least one processor, wherein the memory stores instructions; the at least one processor calls the instructions in the memory so that the computer device executes the above-mentioned anti-mislocking method.

[0014] A fourth aspect of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the above-mentioned method for preventing mislocking.

[0015] In the technical solution provided by the present invention, the maintenance status of the vehicle located at the position of the contact network in the depot is detected, and the type of locking operation on the contact network in the depot is determined based on the maintenance status; when the locking operation type is a power failure locking operation, it is detected whether the closing auxiliary point of the DC contactor is in a closed state. If the closing auxiliary point of the DC contactor is in a closed state, the connecting knife switch is controlled to perform an opening operation, and it is detected whether the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state. If the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are both in a closed state, the connecting knife switch is controlled to perform an opening operation. The three-position knife switch performs the disconnection operation in the connection position to realize the power outage operation; when the locking operation type is the power transmission locking operation, it detects whether the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are in a closed state. If the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are both in a closed state, the three-position knife switch is controlled to perform the connection operation in the connection position, and detects whether the closing auxiliary point of the DC contactor is in a closed state. If the closing auxiliary point of the DC contactor is in a closed state, the connecting knife switch is controlled to perform the closing operation, and then the DC contactor is controlled to perform the opening operation to realize the power transmission operation. In the embodiment of the present invention, when the power transmission operation is stopped by the contact network in the depot, the contactor, the connecting knife switch and the three-position knife switch in the device will perform the opening and closing operations according to the pre-established logic. Since the contactor has the ability to disconnect the load circuit, it is not necessary to consider whether the vehicle is in the bow-down state during the power transmission operation, which effectively simplifies the operation process, reduces the time and errors of human judgment, and thus improves the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of an embodiment of the method for preventing mis-locking in an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of a control circuit for implementing a method for preventing mislocking in an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of another embodiment of the method for preventing mis-locking in an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of a control circuit for realizing sequential control operation and sub-control operation in an embodiment of the present invention;

[0020] Figure 5 A schematic diagram of an anti-mislocking device in an embodiment of the present invention;

[0021] Figure 6 FIG. 1 is a schematic diagram of an embodiment of a computer device in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The embodiments of the present invention provide a control method, device and equipment for a visual grounding load switch device, which performs opening and closing operations according to a pre-established logic through a contactor, a connecting knife switch and a three-position knife switch to realize power outage operation, effectively simplifying the operation process, reducing the time and errors of human judgment, and thus improving operation efficiency.

[0023] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" or "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] It is understandable that the execution subject of the present invention may be a control device of a visualized grounding load switch device, or may be a terminal or a server, which is not specifically limited here. The embodiment of the present invention is described by taking a server as an execution subject as an example.

[0025] For ease of understanding, the specific process of the embodiment of the present invention is described below. Figure 1 , an embodiment of the method for preventing mis-locking in an embodiment of the present invention includes:

[0026] 101. Detecting the maintenance status of a vehicle located at a position of the contact network in the depot, and determining a locking operation type for the contact network in the depot based on the maintenance status;

[0027] 102. When the locking operation type is a power failure locking operation, it is detected whether the closing auxiliary point of the DC contactor is in a closed state. If the closing auxiliary point of the DC contactor is in a closed state, the connecting knife switch is controlled to perform an opening operation, and it is detected whether the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state. If the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are both in a closed state, the three-position knife switch is controlled to perform a connection position disconnection operation to realize a power failure operation;

[0028] 103. When the locking operation type is the power transmission locking operation, detect whether the open position auxiliary point of the DC contactor and the open position auxiliary point of the interconnecting knife switch are in the closed state. If the open position auxiliary point of the DC contactor and the open position auxiliary point of the interconnecting knife switch are both in the closed state, control the three-position knife switch to perform the connecting position operation, detect whether the closing position auxiliary point of the DC contactor is in the closed state, if the closing position auxiliary point of the DC contactor is in the closed state, control the interconnecting knife switch to perform the closing operation, and then control the DC contactor to perform the opening operation to realize the power transmission operation.

[0029] The anti-mistake locking method is applied to a visual grounding load switch device, which includes a DC contactor, a contactor switch and a three-position switch. Figure 2 As shown in the circuit diagram, including the opening and closing switch D02 of the DC contactor, the closing switch D03 of the connecting knife switch, the opening switch D04 of the connecting knife switch, the closing switch D05 of the three-position knife switch in the connected position, the opening switch D06 of the three-position knife switch in the connected position, the closing switch D07 of the three-position knife switch in the connected position, the opening switch D08 of the three-position knife switch in the connected position, the closing auxiliary point JCQ (13, 14) of the DC contactor, the opening auxiliary point JCQ (21, 22) of the DC contactor, the opening auxiliary point LL (11, 12) of the connecting knife switch, the closing coil 2KA (A1, A2) of the connecting knife switch, the opening coil 3KA (A1, A2), the closing contact 3KA (21, 22) and open contact 2KA (21, 22), the on-position closing coil 4KA (A1, A2) of the three-position knife switch, the on-position opening coil 5KA (A1, A2), the on-position closing contact 5KA (21, 22), the on-position open contact 4KA (21, 22), the first motor 2M, the second motor 1M, the first control contact 3KA (43, 44), 3KA (13, 14), the second control contact 2KA (43, 44), 2KA (13, 14), the third control contact 4KA (43, 44), 4KA (13, 14) and the fourth control contact 5KA (43, 44), 5KA (13, 14).

[0030] When the opening and closing switch of the DC contactor is closed, the DC contactor is in a connected state; when the opening and closing switch of the DC contactor is opened, the DC contactor is in a disconnected state; the closing auxiliary point of the DC contactor is connected in series with the connecting knife switch; the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are connected in series with the three-position knife switch; when the DC contactor is in a connected state, the closing auxiliary point of the DC contactor is closed, and the opening auxiliary point of the DC contactor is disconnected; when the DC contactor is in a disconnected state, the closing auxiliary point of the DC contactor is disconnected, and the opening auxiliary point of the DC contactor is closed.

[0031] The contact knife switch includes a closing control circuit, an opening control circuit, a first motor, a first control contact and a second control contact. After the closing control circuit and the opening control circuit are connected in parallel, one end thereof is connected in series with the closing auxiliary point of the DC contactor, and the other end is connected in series with the first motor. The first control contact is respectively arranged at both ends of the first motor, and the second control contact is respectively arranged at both ends of the first motor. The first control contact controls the reverse rotation of the first motor to drive the contact knife switch to open, and the second control contact controls the forward rotation of the first motor to drive the contact knife switch to close, and when the closing control circuit is disconnected, the first control contact is closed, and when the closing control circuit is disconnected, the first control contact is closed. When the circuit is connected, the first control contact is disconnected. When the opening control circuit is disconnected, the second control contact is closed. When the opening control circuit is connected, the second control contact is disconnected. Therefore, when the closing control circuit is closed, the first control contact is disconnected, and when the second control contact is closed, the first motor is driven to rotate forward to realize the closing operation of the connecting knife switch. When the opening control circuit is closed, the second control contact is disconnected, and when the first control contact is closed, the second motor is driven to rotate reversely to realize the opening operation of the connecting knife switch. The closing control circuit includes a closing switch, a closing coil and a closing contact. The opening control circuit includes an opening switch, an opening coil and an opening contact.

[0032] The three-position knife switch includes a connection position closing control circuit, a connection position opening control circuit, a connection position closing control circuit, a connection position opening control circuit, a second motor, a third control contact and a fourth control contact. The connection position opening control circuit is connected to the connection position closing control circuit, and the connection position closing control circuit is connected to the connection position opening control circuit. After the connection position closing control circuit and the connection position opening control circuit are connected in parallel, one end is connected in series with the opening auxiliary point of the DC contactor and the opening auxiliary point of the contact knife switch, and the other end is connected in series with the second motor. The circuit includes an on-position closing switch, an on-position closing coil and an on-position closing contact. The on-position opening control circuit includes an on-position opening switch, an on-position opening coil and an on-position opening contact. When the on-position closing control circuit is closed, the fourth contact is disconnected, and the third control contact is closed, the second motor is driven to rotate forward to realize the closing operation of the three-position knife switch on position. When the on-position opening control circuit is closed, the third control contact is disconnected, and the fourth control contact is closed, the second motor is driven to rotate reversely to realize the opening operation of the three-position knife switch on position.

[0033] Through Figure 2The control circuit shown realizes the opening and closing operations of the contactor, the connecting knife switch and the three-position knife switch, and connects the closing auxiliary point of the DC contactor to the control circuit of the connecting knife switch, that is, the closing auxiliary point of the DC contactor is connected in series to the closing control circuit and the opening control circuit of the connecting knife switch, so that the opening and closing control circuit of the connecting knife switch can be connected only when the contactor is in the closing position, thereby eliminating the hidden danger of arcing of the connecting knife switch. The DC contactor, the connecting knife switch and the three-position knife switch are controlled by the above-mentioned control circuit. When the connecting knife switch is opened and closed, it is ensured that the DC contactor is in the closing position to short-circuit the two ends of the connecting knife switch, so that the potential at the two ends of the connecting knife switch is zero. At this time, there will be no arcing when the connecting knife switch is opened and closed, thereby ensuring the safety of operating the connecting knife switch.

[0034] By connecting the split auxiliary points of the DC contactor and the contact knife switch to the control circuit of the three-position knife switch, the control circuit of the three-position knife switch can be connected only when the DC contactor and the contact knife switch are both in the split position, so as to ensure that the three-position knife switch has no arcing hidden danger. The DC contactor, the contact knife switch and the three-position knife switch are controlled by the above control circuit. When the three-position knife switch is opened and closed, the DC contactor and the contact knife switch are guaranteed to be in the split state. At this time, the contact network in the warehouse can be guaranteed to be non-energized, and the arcing phenomenon will not occur when the three-position knife switch is operated, thereby ensuring the safety of operating the three-position knife switch.

[0035] Detecting the maintenance status of the vehicle under the contact network in the depot and determining the type of locking operation based on the maintenance status are key links to ensure the safe and stable operation of the system. The status of the vehicle under the contact network in the depot can be monitored in real time through sensors or other detection means. These sensors can detect target information such as the vehicle's location, operating status, and whether the maintenance procedure is started, and send the target information to the server. The server analyzes the target information and determines the maintenance status of the vehicle based on the analysis results.

[0036] If the vehicle's inspection status is in the inspection status, the locking operation type is determined to be a power-off locking operation; if the vehicle's inspection status is in the inspection completion status, the locking operation type is determined to be a power-on locking operation.

[0037] The power outage interlocking operation is to ensure the electrical isolation between the contact network and the power supply in the depot when the vehicle is under maintenance, to prevent accidents such as accidental electric shock or short circuit. The power supply interlocking operation is to reconnect the contact network in the depot to the system after the maintenance is completed to restore its normal power supply state.

[0038] When the locking operation type is a power outage locking operation, ensure that the DC contactor is in the closed state, open the contactor switch, open the DC contactor, and then disconnect the three-position switch to achieve power outage.

[0039] Controlling the contacting knife switch to perform the opening operation includes: detecting whether the closing control circuit and the opening control circuit are in the initial state of the power failure lockout operation; if so, controlling the opening control circuit to close, and under the drive of the opening control circuit, the first motor rotates in the reverse direction to realize the opening control of the contacting knife switch.

[0040] The detection of the initial state under the power outage lockout operation includes: detecting whether the closing switch and the opening switch of the interconnecting knife switch are both in the disconnected state; if so, detecting whether the closing contact and the opening contact of the interconnecting knife switch are in the closed state; if so, determining whether the closing control circuit and the opening control circuit are both in the initial state of the power outage operation.

[0041] Controlling the opening control circuit to close, under the drive of the opening control circuit, the first motor of the connecting knife switch rotates in the opposite direction, including: controlling the opening switch of the connecting knife switch to close to drive the opening coil to operate, disconnecting the closed contact and the second control contact, so as to realize the opposite direction rotation of the first motor of the connecting knife switch.

[0042] In the initial state of the power failure lockout operation, the closing switch of the connecting knife switch is disconnected, and the closing control circuit is in a disconnected state, thereby determining that the closing coil is in a disconnected state. When the closing coil is in a disconnected state, the opening contact and the first control contact are closed, and the opening switch of the combined knife switch is disconnected, then the opening control circuit is in a disconnected state, thereby determining that the opening coil is in a disconnected state. When the opening coil is in a disconnected state, the closing contact and the second control contact are closed. Therefore, in the initial state, if the opening operation of the connecting knife switch is to be realized, the opening switch must be controlled to be closed. After the opening switch is closed, the opening control circuit is connected to drive the opening coil to operate. When the opening coil is running, the closing contact and the second control contact are disconnected to make the first motor of the connecting knife switch rotate in the opposite direction to realize the opening operation of the connecting knife switch.

[0043] After the opening coil is running, the opening auxiliary point of the contact knife switch is closed, and the opening and closing switches of the DC contactor are controlled to perform the opening operation. The closing auxiliary point of the DC contactor is disconnected and the opening auxiliary point is closed, and the connection position opening switch of the three-position knife switch is controlled to be closed, and the connection position closing switch is closed, so that the three-position knife switch is grounded to realize the power outage operation.

[0044] When the locking operation type is the power supply locking operation, ensure that the DC contactor and the interconnecting knife switch are in the open state. After connecting through the three-position knife switch, make sure that the DC contactor is in the closed state, then close the interconnecting knife switch, and finally open the DC contactor to complete the power supply.

[0045] Controlling the three-position knife switch to perform the on-position connection operation includes: detecting whether the on-position closing control circuit and the on-position opening control circuit are both in the initial state of the power supply locking operation; if so, controlling the on-position closing switch to close, so as to drive the on-position closing coil to operate, so as to disconnect the on-position opening contacts, and realize the on-position closing operation of the three-position knife switch.

[0046] The initial state detection of the power supply locking operation includes: detecting whether the on-position closing switch and the on-position opening switch are in the disconnected state; if so, detecting whether the on-position closing contact and the on-position opening contact are in the closed state; if so, determining whether the on-position closing control circuit and the on-position opening control circuit are both in the initial state of the power supply locking operation.

[0047] In the initial state of the power supply locking operation, the on-position closing switch of the three-position knife switch is disconnected, and the on-position closing control circuit is in a disconnected state, thereby determining that the on-position closing coil is in a disconnected state. When the on-position coil is in an off state, the on-position open position contact and the fourth control contact are closed, and the on-position open position switch of the three-position knife switch is disconnected, then the on-position open position control circuit is in a disconnected state, thereby determining that the on-position open position coil is in a disconnected state. When the on-position open position coil is disconnected, the on-position closing contact and the third control contact are closed. Therefore, in the initial state, if the on-position connection operation is to be realized, it is necessary to control the on-position closing switch to be closed. After the on-position closing switch is closed, the on-position closing control circuit is connected, driving the on-position closing coil to operate. When the on-position closing coil is operating, the on-position open position switch contact and the fourth control contact are disconnected, so that the second motor rotates forward to realize the on-position closing operation of the three-position knife switch.

[0048] The opening and closing switch of the DC contactor is controlled to close, the closing auxiliary point of the DC contactor is closed, the opening auxiliary point of the DC contactor is disconnected, and the closing control circuit of the connecting knife switch is controlled to be connected to drive the first motor to rotate in the forward direction to realize the closing of the connecting knife switch, and then the opening and closing switch of the DC contactor is controlled to open, thereby completing the power supply operation.

[0049] In the embodiment of the present invention, the maintenance status of the vehicle located at the position of the contact network in the depot is detected, and the type of locking operation on the contact network in the depot is determined based on the maintenance status; when the locking operation type is a power failure locking operation, it is detected whether the closing auxiliary point of the DC contactor is in a closed state. If the closing auxiliary point of the DC contactor is in a closed state, the connecting knife switch is controlled to perform an opening operation, and it is detected whether the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state. If both the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state, the three-position knife switch is controlled. The switch performs the disconnection operation in the on position to realize the power outage operation; when the locking operation type is the power transmission locking operation, it detects whether the split auxiliary point of the DC contactor and the split auxiliary point of the contact knife switch are in the closed state. If the split auxiliary point of the DC contactor and the split auxiliary point of the contact knife switch are both in the closed state, the three-position knife switch is controlled to perform the connection operation in the on position, and detects whether the closing auxiliary point of the DC contactor is in the closed state. If the closing auxiliary point of the DC contactor is in the closed state, the contact knife switch is controlled to perform the closing operation, and then the DC contactor is controlled to perform the opening operation to realize the power transmission operation. When the power transmission and distribution operation is stopped in the contact network in the depot, the DC contactor, the contact knife switch and the three-position knife switch in the device will perform the opening and closing operations according to the pre-established logic. Since the DC contactor has the ability to disconnect the load circuit, there is no need to consider whether the vehicle is in the bow-down state during the power transmission and distribution operation, which effectively simplifies the operation process, reduces the time and errors of human judgment, and thus improves the operation efficiency.

[0050] See also Figure 3 Another embodiment of the method for preventing mislocking in the embodiment of the present invention includes:

[0051] 301. Receive a local control signal or a remote control signal;

[0052] 302. When a local control signal is received, the local position of the first conversion switch is controlled to be connected based on the local control signal, and the sequential control position or the split control position of the second conversion switch is controlled to be connected to perform sequential control operation or split control operation.

[0053] The visualized grounding load switch device also includes a sequential control circuit provided with a second transfer switch, a power supply button and a power off button, wherein the power supply button and the power off button are connected in parallel and connected in series with the second transfer switch; a sub-control control circuit is provided with a second transfer switch, a contactor closing button, a contactor opening button, a contact knife closing button, a contact knife opening button, a connection position closing button, a connection position opening button, a connection position closing button and a connection position opening button, wherein the contactor closing button, the contactor opening button, the contact knife closing button, the contact knife opening button, the connection position closing button and the connection position opening button are connected in parallel and connected in series with the second transfer switch, and the connection position closing button and the connection position opening button are connected in parallel and connected in series with the first transfer switch; When the visual grounded load switch device is operated in sequence, the power-on button or the power-off button is triggered to output the corresponding first touch signal. Based on the first touch signal, the visual grounded load switch device is controlled to perform the corresponding control action in a preset sequence to complete the power-on or power-off operation; when the visual grounded load switch device is operated in separate control, the contactor closing button, the contactor opening button, the contactor closing button, the contactor opening button, the on-position closing button, the on-position opening button, the connecting position closing button or the connecting position opening button are triggered separately and step by step to output the corresponding second touch signal. Based on the second touch signal, the DC contactor, the connecting knife switch or the three-position knife switch is controlled to independently perform the corresponding opening and closing operations.

[0054] like Figure 4As shown, 1QK is the first conversion switch, 2QK is the second conversion switch, S1H is the power supply button, S1F is the power off button, S2H is the contactor closing button, S2F is the contactor opening button, S3H is the contact knife switch closing button, S3F is the contact knife switch opening button, S4H is the connection position closing button, S4F is the connection position opening button, S5H is the connection position closing button, and S5F is the connection position opening button. When the 3rd and 4th contacts of 1QK are connected, 1QK is in the in-place connected state. In the in-place connected state, when the 3rd and 4th contacts of 2QK are connected, the sequential control operation can be completed through S1H or S1F. The sequential control operation refers to the execution of a series of control actions in a predetermined order. In remote control, the device performs sequential control operation by default. In local control, the corresponding button is triggered to generate the corresponding first touch signal. Based on the first touch signal, a series of control actions are executed in a predetermined order to complete the power supply or power outage function. Therefore, the sequential control operation can realize one-key power supply or one-key power outage function through S1H or S1F; in the in-place connected state, sub-control operation can be performed through S5H and S5F. When the 1st and 2nd contacts of 2QK are connected, The sub-control operation is performed through S2H, S2F, S3H, S3F, S4H and S4F. The sub-control operation can individually control each component in the device. When controlling locally, the corresponding button is triggered to generate the corresponding second touch signal, and each component is individually controlled based on the second touch signal. Therefore, the sub-control operation can independently control the contactor to close the switch through S2H, independently control the contactor to open the switch through S2F, independently control the connecting knife switch to close the switch through S3H, independently control the connecting knife switch to open the switch through S3F, independently control the connection position of the three-station knife switch to close the switch through S4H, independently control the connection position of the three-station knife switch to open the switch through S4F, independently control the connection position of the three-station knife switch to close the switch through S5H, and independently control the connection position of the three-station knife switch to open the switch through S5F.

[0055] Sequential control operation is suitable for automated operation during normal operation, while sub-control operation is more suitable for flexible control during debugging, line troubleshooting or special operations. Through the design of the conversion switch, the device can easily switch between these two modes to meet different operating requirements.

[0056] 303. When a remote control signal is received, obtaining a vehicle detection instruction based on the remote control signal;

[0057] When a remote control signal is received, the remote control node of the first conversion switch is controlled to be connected based on the remote control signal, and it is determined whether the remote control node connection signal of the first conversion switch is received. If the remote control node connection signal of the first conversion switch is received, the vehicle detection instruction is obtained.

[0058] 304. When a vehicle detection instruction is received, the maintenance status of the vehicle located at the position of the contact network in the depot is detected, and the type of locking operation on the contact network in the depot is determined based on the maintenance status;

[0059] 305. When the locking operation type is a power failure locking operation, it is detected whether the closing auxiliary point of the DC contactor is in a closed state. If the closing auxiliary point of the DC contactor is in a closed state, the connecting knife switch is controlled to perform an opening operation, and it is detected whether the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state. If the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are both in a closed state, the three-position knife switch is controlled to perform a connection position disconnection operation to realize a power failure operation;

[0060] 306. When the locking operation type is the power transmission locking operation, detect whether the open position auxiliary point of the DC contactor and the open position auxiliary point of the interconnecting knife switch are in the closed state. If the open position auxiliary point of the DC contactor and the open position auxiliary point of the interconnecting knife switch are both in the closed state, control the three-position knife switch to perform the connecting position operation, detect whether the closing position auxiliary point of the DC contactor is in the closed state, if the closing position auxiliary point of the DC contactor is in the closed state, control the interconnecting knife switch to perform the closing operation, and then control the DC contactor to perform the opening operation to realize the power transmission operation.

[0061] In an embodiment of the present invention, when a local control signal is received, the local position of the first conversion switch is controlled to be connected based on the local control signal, and the sequential control position or the sub-control position of the second conversion switch is controlled to be connected to perform a sequential control operation or a sub-control operation; when a remote control signal is received, a vehicle detection instruction is obtained based on the remote control signal; when a vehicle detection instruction is received, the maintenance status of the vehicle located at the position of the contact network in the depot is detected, and the type of locking operation on the contact network in the depot is determined based on the maintenance status; when the locking operation type is a power failure locking operation, it is detected whether the closing auxiliary point of the DC contactor is in a closed state. If the closing auxiliary point of the DC contactor is in a closed state, the connecting knife switch is controlled to perform an opening operation, and the opening auxiliary point and the contact of the DC contactor are detected. Whether the split auxiliary point of the knife switch is in a closed state, if the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are both in a closed state, the three-position knife switch is controlled to perform the disconnection operation in the connection position to realize the power outage operation; when the locking operation type is the power supply locking operation, detect whether the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are in a closed state, if the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are both in a closed state, then control the three-position knife switch to perform the connection operation in the connection position, detect whether the closing auxiliary point of the DC contactor is in a closed state, if the closing auxiliary point of the DC contactor is in a closed state, control the connecting knife switch to perform the closing operation, and then control the DC contactor to perform the opening operation to realize the power supply operation. Through sequential control operation, the coordinated operation of various devices can be ensured, which improves the stability and reliability of the system. At the same time, sequential control operation can complete the control of multiple devices at one time, which improves the operating efficiency. Through sub-control operation, the performance and function of each device can be tested individually to ensure that the equipment can achieve the expected results during normal operation. At the same time, sub-control operation can also help to quickly locate and solve equipment failures, improving the maintainability and reliability of the system. When the contact network in the depot is shut down, the DC contactor, contact switch and three-position switch in the device will be opened and closed according to the pre-established logic. Since the DC contactor has the ability to cut off the load circuit, there is no need to consider whether the vehicle is in the bow-lowering state during the power-off operation, which effectively simplifies the operating process, reduces the time and errors of human judgment, and thus improves operating efficiency.

[0062] The above describes the anti-mistaken locking method in the embodiment of the present invention. The following describes the anti-mistaken locking device in the embodiment of the present invention. Figure 5 In one embodiment of the present invention, an embodiment of anti-mislocking includes:

[0063] The determination module 501 is used to detect the maintenance status of the vehicle located at the position of the contact network in the depot, and determine the type of locking operation on the contact network in the depot based on the maintenance status;

[0064] The power failure operation module 502 is used to detect whether the closing auxiliary point of the DC contactor is in a closed state when the locking operation type is a power failure locking operation. If the closing auxiliary point of the DC contactor is in a closed state, the connecting knife switch is controlled to perform an opening operation, and detect whether the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state. If the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are both in a closed state, the three-position knife switch is controlled to perform a connection-disconnection operation to achieve a power failure operation;

[0065] The power transmission operation module 503 is used to detect whether the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are in a closed state when the locking operation type is a power transmission locking operation. If the split auxiliary point of the DC contactor and the split auxiliary point of the connecting knife switch are both in a closed state, the three-position knife switch is controlled to perform a connecting operation, and detect whether the closing auxiliary point of the DC contactor is in a closed state. If the closing auxiliary point of the DC contactor is in a closed state, the connecting knife switch is controlled to perform a closing operation, and then the DC contactor is controlled to perform an opening operation to realize the power transmission operation.

[0066] In the embodiment of the present invention, when the contact network in the depot is shut down, the DC contactor, the connecting knife switch and the three-position knife switch in the device will be opened and closed according to the pre-established logic. Since the DC contactor has the ability to disconnect the load circuit, there is no need to consider whether the vehicle is in the bow-lowered state during the power-off operation, which effectively simplifies the operation process, reduces the time and errors of human judgment, and thus improves the operation efficiency.

[0067] above Figure 5 The anti-mistake locking device in the embodiment of the present invention is described in detail from the perspective of modular functional entities, and the computer device in the embodiment of the present invention is described in detail from the perspective of hardware processing.

[0068] See also Figure 6 As shown, the computer device includes a processor 600 and a memory 601 , wherein the memory 601 stores machine executable instructions that can be executed by the processor 600 , and the processor 600 executes the machine executable instructions to implement the above-mentioned anti-mislocking method.

[0069] Further, Figure 6 The computer device shown also includes a bus 602 and a communication interface 603 , and the processor 600 , the communication interface 603 and the memory 601 are connected via the bus 602 .

[0070] The memory 601 may include a high-speed random access memory (RAM), and may also include a non-volatile memory (non-volatile memory), for example, at least one disk storage. The communication connection between the system network element and at least one other network element is realized through at least one communication interface 603 (which may be wired or wireless), and the Internet, wide area network, local area network, metropolitan area network, etc. may be used. The bus 602 may be an ISA bus, a PCI bus, or an EISA bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0071] The processor 600 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 600. The above processor 600 can be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The disclosed methods, steps and logic block diagrams in the embodiments of the present disclosure can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in conjunction with the embodiments of the present disclosure can be directly embodied as a hardware decoding processor to be executed, or a combination of hardware and software modules in the decoding processor can be executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 601 , and the processor 600 reads the information in the memory 601 and completes the method steps of the above-mentioned embodiment in combination with its hardware.

[0072] The present invention also provides a computer device, which includes a memory and a processor. The memory stores computer-readable instructions. When the computer-readable instructions are executed by the processor, the processor executes the steps of the anti-mislocking method in the above-mentioned embodiments.

[0073] The present invention also provides a computer-readable storage medium, which may be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. Instructions are stored in the computer-readable storage medium. When the instructions are executed on a computer, the computer executes the steps of the anti-mislocking method.

[0074] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0075] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0076] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for preventing mis-locking, applied to a visual grounding load switch device, characterized in that: The visualized grounding load switch device comprises a DC contactor, a connecting knife switch and a three-position knife switch, wherein the closing auxiliary point of the DC contactor is connected in series with the connecting knife switch, and the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are connected in series with the three-position knife switch, and the method comprises: Detecting the maintenance status of a vehicle located at a position of the in-depot contact network, and determining the type of locking operation on the in-depot contact network based on the maintenance status; When the locking operation type is a power failure locking operation, it is detected whether the closing auxiliary point of the DC contactor is in a closed state. If it is in a closed state, the connecting knife switch is controlled to perform an opening operation, and it is detected whether the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state. If both are in a closed state, the three-position knife switch is controlled to perform a connection disconnection operation to realize a power failure operation; When the locking operation type is a power transmission locking operation, detect whether the open position auxiliary point of the DC contactor and the open position auxiliary point of the connecting knife switch are in a closed state. If both are in a closed state, control the three-position knife switch to perform a connecting position operation, detect whether the closing position auxiliary point of the DC contactor is in a closed state. If it is in a closed state, control the connecting knife switch to perform a closing operation, and then control the DC contactor to perform an opening operation to achieve a power transmission operation.

2. The method for preventing mis-locking according to claim 1, characterized in that: The contact knife switch includes a closing control circuit and an opening control circuit connected in parallel, and a first motor connected in series with the closing control circuit and the opening control circuit. The closing auxiliary point of the DC contactor is connected in series with the closing control circuit and the opening control circuit respectively. The control of the contact knife switch to perform the opening operation includes: Detecting whether the closing control circuit and the opening control circuit are in the initial state of the power failure locking operation; If so, the opening control circuit is controlled to be closed, and under the drive of the opening control circuit, the first motor rotates in the opposite direction to realize the opening control of the connecting knife switch.

3. The method for preventing mis-locking according to claim 2, characterized in that: The closing control circuit includes a closing switch, a closing coil and a closing contact, and the opening control circuit includes an opening switch, an opening coil and a separation contact. When the closing coil of the connecting knife switch is energized, the separation contact of the connecting knife switch is driven to be disconnected. When the opening coil of the connecting knife switch is energized, the closing contact of the connecting knife switch is driven to be disconnected. The detection of whether the opening control circuit and the closing control circuit are in the initial state of the power failure locking operation includes: Detect whether the closing switch and the opening switch of the contact switch are both in a disconnected state; If yes, then detect whether the closing contact and the opening contact of the contact switch are in a closed state; If so, it is determined that both the closing control circuit and the opening control circuit are in the initial state of the power outage operation.

4. The method for preventing mis-locking according to claim 3, characterized in that: The connecting knife switch also includes a first control contact and a second control contact, the first control contact controls the reverse rotation of the first motor to drive the connecting knife switch to open, the second control contact controls the forward rotation of the first motor to drive the connecting knife switch to close, and when the closing control circuit is disconnected, the first control contact is closed, when the closing control circuit is connected, the first control contact is disconnected, when the opening control circuit is disconnected, the second control contact is closed, when the opening control circuit is connected, the second control contact is disconnected, the control of the opening control circuit is closed, and under the drive of the opening control circuit, the first motor of the connecting knife switch rotates in the opposite direction, including: The opening switch of the connecting knife switch is controlled to be closed to drive the opening coil to operate, the closing contact is disconnected and the second control contact is disconnected, so as to realize the reverse rotation of the first motor of the connecting knife switch.

5. The method for preventing mis-locking according to claim 1, characterized in that: The three-position knife switch includes a connection position closing control circuit and a connection position opening control circuit connected in parallel, the connection position closing control circuit includes a connection position closing switch, a connection position closing coil and a connection position closing contact, the connection position opening control circuit includes a connection position opening switch, a connection position opening coil and a connection position opening contact, and the control of the three-position knife switch to perform the connection position connection operation includes: Detecting whether the on-position closing control circuit and the on-position opening control circuit are both in the initial state of the power transmission locking operation; If so, the on-position closing switch is controlled to close to drive the on-position closing coil to operate, so as to disconnect the on-position open contact and realize the on-position closing operation of the three-position knife switch.

6. The method for preventing mis-locking according to claim 1, characterized in that: The visual grounding load switch device further comprises a first transfer switch and a second transfer switch connected in series, and before detecting the maintenance status of the vehicle located at the position of the contact network in the depot, further comprises: When a local control signal is received, the local position of the first transfer switch is controlled to be connected based on the local control signal, and the sequential control position or the split control position of the second transfer switch is controlled to be connected to perform sequential control operation or split control operation.

7. The method for preventing mis-locking according to claim 6, characterized in that: The visual grounding load switch device also includes: A sequential control circuit is provided with the second conversion switch, a power supply button and a power off button, wherein the power supply button and the power off button are connected in parallel and then in series with the second conversion switch; A sub-control circuit is provided for the second transfer switch, the contactor closing button, the contactor opening button, the contactor closing button, the contactor opening button, the connection position closing button, the connection position opening button, the connection position closing button and the connection position opening button, wherein the contactor closing button, the contactor opening button, the contactor closing button, the contactor closing button, the contactor opening button, the connection position closing button and the connection position opening button are connected in parallel and then connected in series with the second transfer switch, and the connection position closing button and the connection position opening button are connected in parallel and then connected in series with the first transfer switch; When the visual grounding load switch device is subjected to sequential control operation, the power supply button or the power off button is triggered to output a corresponding first touch signal, and based on the first touch signal, the visual grounding load switch device is controlled to perform corresponding control actions in a preset sequence to complete the power supply or power off operation; When the visual grounding load switch device is subjected to the sub-control operation, the contactor closing button, the contactor opening button, the connecting knife closing button, the connecting knife opening button, the on-position closing button, the on-position opening button, the connecting position closing button or the connecting position opening button are triggered separately and step by step to output the corresponding second touch signal, and the DC contactor, the connecting knife switch or the three-position knife switch are controlled to independently perform the corresponding opening and closing operations based on the second touch signal. 8.An anti-mislocking device, applied to a visual grounding load switch device, characterized in that: The visualized grounding load switch device comprises a DC contactor, a connecting knife switch and a three-position knife switch, wherein the closing auxiliary point of the DC contactor is connected in series with the connecting knife switch, the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are connected in series with the three-position knife switch, and the anti-mistake locking device comprises: A determination module, used to detect the maintenance status of the vehicle located at the position of the in-depot contact network, and determine the type of locking operation on the in-depot contact network based on the maintenance status; A power failure operation module, used for, when the locking operation type is a power failure locking operation, detecting whether the closing auxiliary point of the DC contactor is in a closed state, if it is in a closed state, controlling the connecting knife switch to perform an opening operation, detecting whether the opening auxiliary point of the DC contactor and the opening auxiliary point of the connecting knife switch are in a closed state, if both are in a closed state, controlling the three-position knife switch to perform a connection position disconnection operation to achieve a power failure operation; A power transmission operation module is used to detect whether the open-position auxiliary point of the DC contactor and the open-position auxiliary point of the connecting knife switch are in a closed state when the locking operation type is a power transmission locking operation. If both are in a closed state, the three-position knife switch is controlled to perform a connecting operation, and detect whether the closing auxiliary point of the DC contactor is in a closed state. If it is in a closed state, the connecting knife switch is controlled to perform a closing operation, and then the DC contactor is controlled to perform an opening operation to realize a power transmission operation.

9. A computer device, characterized in that: The computer device comprises: a memory and at least one processor, wherein instructions are stored in the memory; The at least one processor calls the instructions in the memory to enable the computer device to execute the control method of the visualized grounded load switch device according to any one of claims 1-7.

10. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by the processor, the control method of the visual grounding load switch device as described in any one of claims 1-7 is implemented.

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