Discharge method, device, system and storage medium for a catenary

Abstract

The present application relates to the technical field of rail transit detection, and discloses a discharge method and device for a catenary, a discharge system and a storage medium, which are used to improve the operation safety of catenary discharge. The discharge method is applied to a discharge system, the discharge system comprises at least one static electricity detection component and a discharger, and the discharge method comprises the following steps: detecting whether the discharge system has a static electricity detection mark, whether the isolating switch of the catenary is in the split position, and whether the catenary is electrified through the at least one static electricity detection component; if it is detected that the discharge system has the static electricity detection mark, the isolating switch is in the split position, and the catenary is electrified, the isolating switch is kept in the split position state and locked through the preset discharge instruction to control the discharger, and the catenary and the track are connected for discharge.

Description

Technical Field

[0001] This invention relates to the field of rail transit inspection technology, and in particular to a method, apparatus, system and storage medium for discharging overhead contact lines. Background Technology

[0002] In rail transit, when rail locomotives are being inspected in the operating area or in the depot, the overhead contact system in the operating area and the depot needs to be de-energized to ensure the safety of maintenance personnel. After the overhead contact system is de-energized, residual voltage needs to be discharged.

[0003] Currently, discharge is usually carried out by manually testing for voltage and connecting grounding wires. The existing method is cumbersome and complicated, and poses a risk of electric shock, resulting in low safety of overhead contact line discharge operations. Summary of the Invention

[0004] This invention provides a method, apparatus, system, and storage medium for discharging overhead contact lines, which keeps the disconnecting switch in the open position and locked during the discharge process of the overhead contact lines, thereby improving the operational safety of the discharge of overhead contact lines.

[0005] The first aspect of the present invention provides a method for discharging a contact network, applied to a discharge system. The discharge system includes at least one voltage detection component and a discharger. The method for discharging the contact network includes: detecting whether the discharge system has a voltage detection mark and whether the contact network's disconnecting switch is in the open position; and detecting whether the contact network is energized by the at least one voltage detection component. If the discharge system detects a voltage detection mark, the disconnecting switch is in the open position, and the contact network is energized, then the discharger is controlled by a preset discharge command to keep the disconnecting switch in the open position and lock it, and the contact network is connected to the track for discharge.

[0006] In one feasible implementation, controlling the discharger to keep the disconnecting switch in the open position and lock it, and connecting the contact wire to the track for discharge via a preset discharge command, includes: energizing the discharger via a preset discharge command; acquiring the status information of the discharger, the status information of the discharger indicating whether the discharger is operating in the discharge state; if the status information of the discharger indicates that the discharger is operating in the discharge state, then controlling the discharger to keep the disconnecting switch in the open position and lock it, and connecting the contact wire to the track for discharge.

[0007] In one feasible implementation, detecting whether the contact network is energized by the at least one voltage detection component includes: obtaining the actual voltage value of the contact network through the at least one voltage detection component and performing voltage conversion to obtain at least one simulated voltage value, wherein each simulated voltage value corresponds one-to-one with a voltage detection component; converting the at least one simulated voltage value to obtain at least one target voltage value; if all at least one target voltage value is greater than or equal to a preset voltage value, then the contact network is determined to be energized; if all at least one target voltage value is less than the preset voltage value, then the contact network is determined to be de-energized.

[0008] In one feasible implementation, the number of the at least one voltage detection component is two, the number of the at least one target voltage value is two, and after determining that the contact network is energized, the method further includes: calculating the difference between the two target voltage values; if the difference is greater than or equal to a preset threshold, generating a fault prompt message, the fault prompt message being used to indicate that at least one of the two voltage detection components has malfunctioned.

[0009] In one feasible implementation, after detecting whether the discharge system has a voltage detection mark, whether the contact wire disconnect switch is in the open position, and detecting whether the contact wire is energized by the at least one voltage detection component, the method further includes: if it is detected that the discharge system does not have a voltage detection mark or the disconnect switch is in the closed position, generating a prohibition operation prompt message, the prohibition operation prompt message being used to indicate that the contact wire is not de-energized and that discharge operation is not allowed.

[0010] In one feasible implementation, the discharge system further includes a grounding module. After controlling the discharger to keep the disconnecting switch in the open position and lock it by a preset discharge command, and connecting the contact wire to the track for discharge, the system further includes: detecting whether the contact wire meets the preset grounding conditions; if the contact wire meets the grounding conditions, controlling the grounding module to perform a grounding operation on the contact wire, controlling the discharger to power down, and keeping the disconnecting switch in the open position and locking it.

[0011] A second aspect of the present invention provides a discharge device for a contact network, applied to a discharge system. The discharge system includes at least one voltage detection component and a discharger. The discharge device for the contact network includes: a first detection module, used to detect whether there is a voltage detection mark in the discharge system, whether the disconnecting switch of the contact network is in the open position, and to detect whether the contact network is energized through the at least one voltage detection component; and a control module, used to control the discharger to keep the disconnecting switch in the open position and lock it, and connect the contact network to the track for discharge, if the presence of a voltage detection mark in the discharge system, the disconnecting switch being in the open position, and the contact network being energized are detected, by means of a preset discharge command.

[0012] In one feasible implementation, the control module is specifically used to: power on the discharger through a preset discharge command; acquire the status information of the discharger, the status information of the discharger being used to indicate whether the discharger is working in the discharge state; if the status information of the discharger indicates that the discharger is working in the discharge state, then control the discharger to keep the disconnect switch in the open position and lock it, and connect the contact wire to the track for discharge.

[0013] In one feasible implementation, the first detection module is specifically used to: obtain the actual voltage value of the contact network through the at least one voltage detection component and perform voltage conversion to obtain at least one simulated voltage value, wherein the simulated voltage value corresponds one-to-one with the voltage detection component; convert the at least one simulated voltage value to obtain at least one target voltage value; if the at least one target voltage value is greater than or equal to a preset voltage value, then the contact network is determined to be energized; if the at least one target voltage value is less than the preset voltage value, then the contact network is determined to be de-energized.

[0014] In one feasible implementation, the first detection module is further configured to: calculate the difference between two target voltage values; if the difference is greater than or equal to a preset threshold, generate a fault indication message, the fault indication message being used to indicate that at least one of the two voltage detection components has malfunctioned.

[0015] In one feasible implementation, the discharge device of the contact network further includes: a generation module, used to generate a prohibition operation prompt message if it is detected that the discharge system does not have a voltage detection mark or the disconnecting switch is in the closed position, the prohibition operation prompt message being used to indicate that the contact network is not de-energized and that discharge operation is not allowed.

[0016] In one feasible implementation, the discharge device for the contact network further includes: a second detection module for detecting whether the contact network meets the preset grounding conditions; and an operation module for controlling the grounding module to perform a grounding operation on the contact network, controlling the discharger to power down, and keeping the disconnecting switch in the open position and locked if the contact network meets the grounding conditions.

[0017] A third aspect of the present invention provides a discharge system comprising: a controller, at least one voltage detection component, and a discharger, wherein the controller is connected to both the at least one voltage detection component and the discharger; one end of the voltage detection component is electrically connected to the contact network, and the other end is electrically connected to the controller, and is used to acquire the actual voltage value of the contact network and convert the actual voltage value into an analog voltage value; the input end of the discharger is electrically connected to the contact network, and the output end is electrically connected to the track, and is used to keep the disconnecting switch of the contact network in the open position and lock it when the discharger is operating in the discharge state, and to discharge the contact network; the controller is used to convert the analog voltage value into a target voltage value, detect whether the contact network is energized based on the target voltage value, detect whether the discharge system has a voltage detection mark and whether the disconnecting switch is in the open position, and when the contact network is detected to be energized, the discharge system has a voltage detection mark and the disconnecting switch is in the open position, control the discharger to keep the disconnecting switch in the open position and lock it, and connect the contact network to the track for discharge.

[0018] In one feasible implementation, each of the voltage detection components includes a fuse and a voltage sensor, the fuse being disposed between the contact wire and the voltage sensor, and the input terminal of the discharger being connected to the output terminal of the fuse and the input terminal of the voltage sensor.

[0019] In one feasible implementation, the discharger includes a first relay and a second relay; the first relay is electrically connected to the controller and is used to generate status information of the discharger and transmit it to the controller; the second relay is located between the contact wire and the track and is used to connect the contact wire and the track for discharge.

[0020] In one feasible implementation, the discharger further includes a third relay; the third relay is connected in series with the disconnect switch and is used to keep the disconnect switch in the open position and lock it.

[0021] In one feasible implementation, the discharger further includes an external disconnector interlocking module; the external disconnector interlocking module is connected to the controller and is used to lock the open position of the disconnector, keeping the disconnector in the open position and locked.

[0022] In one feasible implementation, the discharger further includes an insulating baffle; the insulating baffle is disposed between the moving contact and the stationary contact of the disconnecting switch, the insulating baffle is connected to the controller, and is used to be placed between the moving contact and the stationary contact and to contact the moving contact, thereby keeping the disconnecting switch in the open position and locking it.

[0023] A fourth aspect of the present invention provides a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the above-described method for discharging overhead contact lines.

[0024] In the technical solution provided by this invention, the presence of a voltage detection mark in the discharge system and the open position of the contact wire disconnector are detected, and the contact wire is energized using at least one voltage detection component. If a voltage detection mark is detected in the discharge system, the disconnector is in the open position, and the contact wire is energized, a preset discharge command controls the discharger to keep the disconnector in the open position and lock it, and connects the contact wire to the track for discharge. In this embodiment of the invention, when a voltage detection mark is detected in the discharge system, the disconnector is in the open position, and the contact wire is energized, the discharger is controlled to keep the disconnector in the open position and lock it, and connects the contact wire to the track for discharge. This allows for real-time monitoring of the voltage changes in the contact wire, enabling workers at the contact wire discharge operation site to intuitively understand whether the contact wire is energized. It also ensures that the disconnector is kept in the open position and locked during the discharge process, preventing accidental closing of the disconnector due to incorrect operation, which could lead to energization of the contact wire and endanger workers at the contact wire discharge operation site, thus improving the operational safety of contact wire discharge. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of one embodiment of the discharge method for the contact network in this invention;

[0026] Figure 2 This is a schematic diagram of another embodiment of the discharge method for the contact wire in this invention;

[0027] Figure 3 This is a schematic diagram of one embodiment of the discharge device for the contact wire in this invention;

[0028] Figure 4 This is a schematic diagram of another embodiment of the discharge device for the contact wire in this invention;

[0029] Figure 5 This is a schematic diagram of one embodiment of the discharge system in this invention;

[0030] Figure 6 This is a schematic diagram of an embodiment of the discharge system discharging the contact wire in this invention;

[0031] Figure 7 This is a schematic diagram of an embodiment of the present invention in which the powered-on third relay and the disconnecting switch are connected in series.

[0032] Figure 8This is a schematic diagram of an embodiment of the present invention in which three relays are connected in parallel;

[0033] Figure 9 This is a schematic diagram of an embodiment of the present invention in which an insulating baffle is used to keep the disconnecting switch in the open position and lock it.

[0034] Figure 10 This is a schematic diagram of an embodiment of the present invention in which the moving contact of the disconnecting switch is covered by an insulating cover. Detailed Implementation

[0035] This invention provides a method, apparatus, system, and storage medium for discharging overhead contact lines, which keeps the disconnecting switch in the open position and locked during the discharge process of the overhead contact lines, thereby improving the operational safety of the discharge of overhead contact lines.

[0036] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” or “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] For ease of understanding, the specific process of the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 1 One embodiment of the discharge method for the contact network in this invention includes:

[0038] 101. Check whether the discharge system has a voltage detection mark, whether the contact wire disconnect switch is in the open position, and check whether the contact wire is energized by at least one voltage detection component;

[0039] The discharge system includes at least one voltage detection component, a discharger, and a controller.

[0040] It is understood that the executing entity of this invention can be a discharge device for the overhead contact line, or it can be a controller; no specific limitation is made here. This embodiment of the invention will be described using a controller as an example.

[0041] It should be noted that the controller simultaneously detects whether there is a voltage detection mark in the discharge system, whether the contact wire disconnect switch is in the open position, and whether the contact wire is energized.

[0042] The voltage detection mark is a signal generated by an external device, which is then received by the controller. For example, in a discharge grounding scenario, a closing button for the grounding switch is set on the operation panel of the grounding cabinet. After the contact network is de-energized, when the closing button of the grounding switch is pressed, a voltage detection mark is generated, and the controller obtains the voltage detection mark; or the closing remote control command of the grounding switch is issued through the management background to generate a voltage detection mark, which is then sent to the controller via communication transmission, and the controller obtains the voltage detection mark.

[0043] It should be noted that the voltage detection component can detect the actual voltage value of the contact network when it is energized, and it can also detect the actual voltage value of the contact network when it is de-energized.

[0044] In one feasible implementation, the discharge system further includes a management backend and a display module. The display module is located at the operation site of the overhead contact line. When the overhead contact line is energized, the controller obtains the actual voltage value of the overhead contact line through a voltage detection component. The controller then sends this actual voltage value to the management backend for display, or the controller sends it to the display module for display. When the overhead contact line is de-energized, the controller obtains the actual voltage value of the overhead contact line through a voltage detection component. The controller then sends this actual voltage value to the management backend for display, or the controller sends it to the display module for display.

[0045] For example, the controller sends the actual voltage value when the overhead contact line is de-energized to the LED screen at the operation site, and the LED screen displays the actual voltage value when the overhead contact line is de-energized.

[0046] By displaying the actual voltage value when the overhead contact line is de-energized, the voltage change status of the overhead contact line can be monitored in real time. This allows workers at the overhead contact line discharge site to intuitively understand whether the overhead contact line is energized, avoiding the danger of workers performing discharge operations without knowing whether the overhead contact line is energized, and improving the safety of overhead contact line discharge operations.

[0047] In one feasible implementation, the discharge system further includes an external disconnector detection module. The external disconnector detection module is used to collect the disconnector position information of the disconnector switch, generate the disconnector switch status information based on the disconnector position information, and send the disconnector switch status information to the controller. The disconnector switch status information is used to indicate whether the disconnector switch is in the open position.

[0048] Understandably, the disconnector position information indicates whether the disconnector is in the closed or open position. If the disconnector is in the open position, then the disconnector is confirmed to be in the open position. If the disconnector is in the closed position, then the disconnector is confirmed to be in the closed position.

[0049] As an example, and not a limitation, the external disconnector detection module can be an image acquisition device used to acquire images of the disconnector switch to obtain the disconnector position information; it can also be a sensor used to detect whether the moving and stationary contacts of the disconnector switch are in contact to obtain the disconnector position information. There are no limitations here, as long as it can detect whether the disconnector switch is in the open position.

[0050] By detecting whether the isolating switch is in the open position, the contact wire can be discharged when it is determined that the isolating switch is in the open position (i.e., the contact wire is de-energized). This avoids the problem of the isolating switch being closed and energized due to incorrect operation, which could cause danger to the workers at the operation site when discharging the contact wire.

[0051] 102. If the discharge system is found to have a voltage detection mark, the isolating switch is in the open position and the contact wire is energized, the discharger is controlled by a preset discharge command to keep the isolating switch in the open position and lock it, and the contact wire is connected to the track to discharge.

[0052] When the disconnecting switch is in the open position, the power to the overhead contact line is cut off. The "contact line energized" indicator shows that residual voltage exists in the contact line after power is cut off.

[0053] It should be noted that the overhead contact line can only be discharged after it has been de-energized. During the discharge process, the disconnecting switch must be kept in the open position and locked to prevent the disconnecting switch from being closed due to incorrect operation, which would cause the overhead contact line to be energized and thus endanger the workers at the overhead contact line discharge site.

[0054] In one feasible implementation, after detecting whether there is a voltage detection mark in the discharge system, whether the disconnecting switch of the contact network is in the open position, and detecting whether the contact network is energized by at least one voltage detection component, the method further includes: if it is detected that there is no voltage detection mark in the discharge system or the disconnecting switch is in the closed position, generating a prohibition operation prompt message, which indicates that the contact network is not de-energized and that discharge operation is not allowed.

[0055] The disconnecting switch is in the closed position, meaning the contact wire is energized.

[0056] The "Do Not Operate" message can remind workers that the overhead contact line is energized, thus preventing dangerous situations caused by discharging while the contact line is energized.

[0057] In one feasible implementation, (1) when the controller receives the voltage detection mark, it detects whether the disconnecting switch of the contact network is in the open position; (2) when the disconnecting switch is detected to be in the open position, the controller detects whether the contact network is energized through at least one voltage detection component; (3) when the contact network is detected to be energized, the controller controls the discharger to keep the disconnecting switch in the open position and lock it through a preset discharge command, and connects the contact network to the track to discharge.

[0058] Understandably, upon receiving a voltage detection indicator, the system first determines whether the isolating switch is in the open position (i.e., whether the contact network is de-energized). Once the isolating switch is confirmed to be in the open position (i.e., the contact network is de-energized), the voltage detection component then checks whether the contact network is energized (i.e., whether there is residual voltage in the contact network after de-energization). If the contact network is confirmed to be energized (i.e., there is residual voltage in the contact network after de-energization), the controller controls the discharger to keep the isolating switch in the open position and lock it, and connects the contact network to the track for discharge.

[0059] By ensuring the disconnector is in the open position and the overhead contact line is energized before discharging the contact line, it is possible to ensure that the contact line is de-energized, thereby avoiding danger to personnel. Furthermore, keeping the disconnector in the open position and locking it during the discharge process prevents the disconnector from closing due to incorrect operation, which would cause the contact line to become energized and thus endanger personnel at the contact line discharge site, thereby improving the operational safety of contact line discharge.

[0060] In this embodiment of the invention, when a voltage detection mark is detected in the discharge system, the disconnecting switch is in the open position, and the contact wire is energized, the discharger is controlled to keep the disconnecting switch in the open position and lock it, and connect the contact wire to the track for discharge. This allows for real-time monitoring of the voltage changes in the contact wire, enabling on-site personnel to intuitively understand whether the contact wire is energized. Furthermore, keeping the disconnecting switch in the open position and locking it during discharge prevents accidental closing of the disconnecting switch due to incorrect operation, which could lead to energization of the contact wire and endanger on-site personnel, thus improving the operational safety of contact wire discharge.

[0061] Please see Figure 2 Another embodiment of the discharge method for the contact network in this invention includes:

[0062] 201. Check whether the discharge system has a voltage detection mark, whether the contact wire disconnect switch is in the open position, and check whether the contact wire is energized by at least one voltage detection component;

[0063] In one feasible implementation, the detection of whether the contact network is energized is performed by at least one voltage detection component, specifically including: (1) the controller obtains the actual voltage value of the contact network through at least one voltage detection component and performs voltage conversion to obtain at least one analog voltage value, and the analog voltage value corresponds one-to-one with the voltage detection component; (2) the controller performs voltage conversion on at least one analog voltage value to obtain at least one target voltage value; (3) if at least one target voltage value is greater than or equal to a preset voltage value, the contact network is determined to be energized; (4) if at least one target voltage value is less than the preset voltage value, the contact network is determined to be de-energized.

[0064] As an example, and not a limitation, the preset voltage value can be 100V or 200V, and the specific preset voltage value can be set according to the actual application scenario.

[0065] The voltage detection assembly includes a fuse and a voltage sensor. The fuse protects the circuit; for example, when a circuit fault occurs, the fuse disconnects the corresponding circuit to protect the components in the circuit. As an example, and not a limitation, the voltage sensor can be a contact voltage sensor or a non-contact voltage sensor; this is not limited here. For example, the controller obtains the actual voltage value of the contact network through the voltage sensor in the voltage detection assembly and performs voltage conversion to obtain an analog voltage value. The actual voltage value is 100V, and the analog voltage value is 5V. The controller converts the analog voltage value based on a preset conversion rule to obtain the target voltage value of the contact network, which is 100V. The preset conversion rule is set according to the actual voltage value. It should be noted that the range of the analog voltage value is 0-5V. Since the actual voltage value is 100V and the analog voltage value is 5V, the preset conversion rule is: X = k * Y, where X indicates the target voltage value, k is 20, and Y indicates the analog voltage value.

[0066] By detecting whether the overhead contact line is energized, the voltage changes of the contact line can be monitored in real time, allowing workers at the contact line discharge operation site to intuitively understand whether the contact line is energized and its actual voltage value.

[0067] In one feasible implementation, the number of at least one voltage detection component is more than one. After determining that the contact network is energized, the method further includes: (1) the controller calculates the difference between any two target voltage values ​​among at least one target voltage value to obtain at least one voltage difference; (2) if at least one voltage difference exists that is greater than or equal to a preset threshold, the controller generates a fault prompt message, which is used to indicate that a voltage detection component among at least one voltage detection component has malfunctioned.

[0068] For example, the number of at least three voltage detection components is 3, meaning the number of at least three target voltage values ​​is 3: the first target voltage value is 10V, the second target voltage value is 15V, and the third target voltage value is 30V. The controller calculates the difference between any two target voltage values, resulting in three voltage differences: the voltage difference between the second and first target voltage values ​​is 5V, the voltage difference between the third and first target voltage values ​​is 20V, and the voltage difference between the third and second target voltage values ​​is 15V. If any of the three voltage differences is greater than or equal to a preset threshold, the controller generates a fault message indicating that one of the three voltage detection components has malfunctioned.

[0069] In one feasible implementation, the number of at least one voltage detection component is two, and the number of at least one target voltage value is two. After determining that the contact network is energized, the method further includes: (1) the controller calculates the difference between the two target voltage values; (2) if the difference is greater than or equal to a preset threshold, the controller generates a fault prompt message, which is used to indicate that at least one of the two voltage detection components has failed.

[0070] As an example rather than a limitation, the preset threshold can be 10V or 20V. There is no limitation here. The specific preset threshold can be set according to the actual application scenario.

[0071] When there are at least two voltage detection components, the difference between the two target voltage values ​​is used to determine whether the voltage detection component is faulty. The operating status of the voltage detection component can be monitored in real time, so as to detect and eliminate faults in a timely manner, thereby improving the safety and efficiency of the contact network inspection.

[0072] 202. If the discharge system is found to have a voltage detection mark, the isolating switch is in the open position and the contact wire is live, the discharger is controlled by a preset discharge command to keep the isolating switch in the open position and lock it, and the contact wire is connected to the track to discharge.

[0073] In one feasible implementation, the discharger is controlled by a preset discharge command to keep the disconnecting switch in the open position and lock it, and to connect the contact wire to the track for discharge. Specifically, this includes: (1) if the discharge system is detected to have a voltage detection mark, the disconnecting switch is in the open position and the contact wire is energized, the controller powers on the discharger by a preset discharge command; (2) the controller obtains the status information of the discharger, which is used to indicate whether the discharger is working in the discharge state; (3) if the status information of the discharger indicates that the discharger is working in the discharge state, the controller controls the discharger to keep the disconnecting switch in the open position and lock it, and to connect the contact wire to the track for discharge.

[0074] The controller includes a fourth relay, which powers the discharger by a preset discharge command. This can be understood as the controller controlling the fourth relay to conduct the circuit between the controller and the discharger by the preset discharge command, thereby powering the discharger.

[0075] The discharger includes a first relay, which is a normally open low-voltage relay. When the normally open low-voltage relay is operating normally, acquiring the discharger's status information can be understood as follows: when the discharger is powered on, the normally open low-voltage relay switches from its normally open state to its normally closed state, connecting the series circuit between the normally open low-voltage relay and the controller. Thus, the controller determines that the discharger is operating in a discharging state and assigns this status information as indicating that the discharger is operating in a discharging state. When the normally open low-voltage relay malfunctions, acquiring the discharger's status information can be understood as follows: when the discharger is powered on, the normally open low-voltage relay cannot switch from its normally open state to its normally closed state, failing to connect the series circuit between the normally open low-voltage relay and the controller. Therefore, the controller determines that the discharger is not operating in a discharging state and assigns this status information as indicating that the discharger is not operating in a discharging state.

[0076] The discharger also includes a second relay, which is a normally open high-voltage relay. The normally open high-voltage relay is located between the contact wire and the track, connecting the contact wire and the track for discharge. This can be understood as the normally open high-voltage relay switching from a normally open state to a normally closed state, thereby connecting the contact wire and the track, and thus discharging the contact wire.

[0077] Discharging the contact network using a discharger avoids the electric shock problem caused by the existing method of manually connecting grounding wires, thus improving the safety of contact network discharge.

[0078] By keeping the disconnecting switch in the open position and locking it, the disconnecting switch cannot be closed, thus keeping the contact network in a de-energized state and improving the safety of contact network discharge.

[0079] In one feasible implementation, the discharger further includes a third relay, which is a normally closed low-voltage relay, controlling the discharger to keep the disconnecting switch in the open position and lock it. Specifically, the controller controls the third relay in the discharger to disconnect the target circuit so as to keep the disconnecting switch in the open position and lock it. The target circuit is a circuit in which the third relay and the disconnecting switch are connected in series.

[0080] It should be noted that the target circuit is the circuit that controls the closing or opening of the disconnecting switch. Disconnecting the target circuit can be understood as the normally closed low-voltage relay switching from its normally closed state to its normally open state, thus breaking the circuit connected in series between the third relay and the disconnecting switch. By disconnecting the target circuit, the disconnecting switch, which is in the open position, cannot close or open normally, thereby keeping the disconnecting switch in the open position and locking it.

[0081] In one feasible implementation, the discharger further includes an external knife switch interlocking module, which controls the discharger to keep the disconnecting switch in the open position and lock it. Specifically, the controller controls the external knife switch interlocking module in the discharger to lock the open position of the disconnecting switch, so as to keep the disconnecting switch in the open position and lock it.

[0082] As an example and not a limitation, the external knife switch interlocking module can be an electronic lock installed on the knife switch of the disconnecting switch, or other devices that can lock the open state of the disconnecting switch. There are no limitations here, as long as they can lock the open state of the disconnecting switch.

[0083] By controlling the external disconnector interlocking module to lock the disconnector switch in the open position, the disconnector switch is kept in the open position and locked, so that the disconnector switch cannot be closed, thus keeping the contact network in a de-energized state and improving the safety of contact network discharge.

[0084] In one feasible implementation, the discharger further includes an insulating baffle disposed between the moving contact and the stationary contact of the disconnecting switch. The control of the discharger to keep the disconnecting switch in the open position and lock it specifically includes: the controller controlling the insulating baffle in the discharger to move between the moving contact and the stationary contact of the disconnecting switch and to contact the moving contact, so as to keep the disconnecting switch in the open position and lock it.

[0085] As an example rather than a limitation, the shape and size of the insulating baffle are not required; it can be rectangular or circular, as long as it is positioned between the moving and stationary contacts of the disconnecting switch and in contact with the moving contact, and can keep the disconnecting switch in the open position and locked.

[0086] The moving and stationary contacts of the disconnecting switch are isolated by an insulating baffle, and the disconnecting switch is kept in the open position and locked. This prevents the disconnecting switch from being closed and energized even under erroneous operation, thus keeping the contact network in a de-energized state and improving the safety of contact network discharge.

[0087] In one feasible implementation, the discharger further includes an insulating cover disposed at the moving contact of the disconnecting switch. The control of the discharger to keep the disconnecting switch in the open position and lock it specifically includes: the controller controlling the insulating cover in the discharger to cover the moving contact of the disconnecting switch and to contact the moving contact, so as to keep the disconnecting switch in the open position and lock it.

[0088] As an example, not a limitation, the shape of the insulating cover is not required. The shape of the insulating cover can be hemispherical or cylindrical, as long as it covers and contacts the moving contact of the disconnecting switch, and can keep the disconnecting switch in the open position and lock it.

[0089] The moving and stationary contacts of the disconnecting switch are isolated by an insulating cover, and the disconnecting switch is kept in the open and locked position. This prevents the disconnecting switch from being closed and energized even under erroneous operation, thus keeping the contact network in a de-energized state and improving the safety of contact network discharge.

[0090] 203. Check whether the contact network meets the preset grounding conditions;

[0091] In one feasible implementation, the controller detects whether the contact network meets the preset grounding conditions, specifically including: (1) the controller obtains the actual voltage value of the contact network through at least one voltage detection component and performs voltage conversion to obtain at least one analog voltage value, and the analog voltage value corresponds one-to-one with the voltage detection component; (2) the controller performs voltage conversion on at least one analog voltage value to obtain at least one target voltage value; (3) if at least one target voltage value is less than or equal to a first preset value within a preset time period, the controller determines that the contact network meets the preset grounding conditions; (4) if at least one target voltage value is greater than the first preset value within a preset time period, the controller determines that the contact network does not meet the preset grounding conditions.

[0092] By checking whether the overhead contact line meets the preset grounding conditions, the problem of performing grounding operations when the overhead contact line does not meet the grounding conditions, which could endanger workers, is avoided, thus improving the operational safety of overhead contact line grounding.

[0093] In one feasible implementation, after the controller converts at least one analog voltage value to obtain at least one target voltage value, the method further includes: (1) if at least one target voltage value is greater than a first preset value within a preset time period, the controller determines whether at least one target voltage value is greater than or equal to a second preset value, wherein the second preset value is greater than the first preset value; (2) if there is a target voltage value greater than or equal to the second preset value among the at least one target voltage values, the controller generates a reminder message, wherein the reminder message is used to indicate that the voltage of the contact network should be checked.

[0094] As an example, and not a limitation, the preset duration can be 5 seconds or 10 seconds, and the specific preset duration can be set according to the actual application scenario. The first preset value can be 5V or 10V, as long as it does not pose a risk of electric shock to workers. The specific first preset value can be set according to the actual application scenario. The second preset value can be 10V or 20V, as long as the second preset value is greater than the first preset value. The specific second preset value can be set according to the actual application scenario.

[0095] By judging the target voltage value that is greater than the second preset value, it is possible to detect a voltage fault in the contact network, thereby inspecting the contact network to avoid the risk of electric shock to workers.

[0096] 204. If the contact network meets the grounding conditions, the control grounding module will perform a grounding operation on the contact network, control the discharger to power down, and keep the disconnecting switch in the open position and locked.

[0097] In one feasible implementation, the discharge system also includes a grounding module.

[0098] The control grounding module performs grounding operations on the contact network. This can be understood as the control grounding switch in the control grounding module closing to ground the contact network and the track.

[0099] The process of controlling the discharger to shut down can be understood as the first, second, and third relays in the discharger returning to their unpowered state, thus disconnecting the series circuit formed by the discharger, the contact wire, and the track.

[0100] In one feasible implementation, the discharger further includes an external knife switch interlocking module to keep the disconnecting switch in the open position and lock it. Specifically, the controller controls the external knife switch interlocking module in the discharger to lock the open position of the disconnecting switch, so as to keep the disconnecting switch in the open position and lock it.

[0101] In one feasible implementation, the discharger further includes an insulating baffle disposed between the moving contact and the stationary contact of the disconnecting switch, which holds the disconnecting switch in the open position and locks it. Specifically, the controller controls the insulating baffle in the discharger to move between the moving contact and the stationary contact of the disconnecting switch and to contact the moving contact, so as to hold the disconnecting switch in the open position and lock it.

[0102] Understandably, during the grounding process of the overhead contact line, the disconnecting switch must be kept in the open position and locked to prevent the disconnecting switch from being closed due to incorrect operation, which would cause the overhead contact line to be energized and thus endanger the workers at the operation site where the overhead contact line is discharging.

[0103] In this embodiment of the invention, when a voltage detection mark is detected in the discharge system, the disconnecting switch is in the open position, and the contact wire is energized, the discharger is controlled to keep the disconnecting switch in the open position and lock it, and connect the contact wire to the track for discharge. This allows for real-time monitoring of the voltage changes in the contact wire, enabling on-site personnel to intuitively understand whether the contact wire is energized. Furthermore, keeping the disconnecting switch in the open position and locking it during discharge prevents accidental closing of the disconnecting switch due to incorrect operation, which could lead to energization of the contact wire and endanger on-site personnel, thus improving the operational safety of contact wire discharge.

[0104] The discharge method for the overhead contact line in the embodiments of the present invention has been described above. The discharge device for the overhead contact line in the embodiments of the present invention is described below. This device is applied to a discharge system, which includes at least one voltage detection component and a discharger. Please refer to [link to relevant documentation]. Figure 3 One embodiment of the discharge device for the contact network in this invention includes:

[0105] The first detection module 301 is used to detect whether there is a voltage detection mark in the discharge system, whether the disconnecting switch of the contact network is in the open position, and to detect whether the contact network is energized through at least one voltage detection component.

[0106] The control module 302 is used to control the discharger to keep the disconnecting switch in the open position and lock it, and connect the contact network to the track to discharge if the discharge system detects that there is a voltage detection mark, the disconnecting switch is in the open position and the contact network is energized.

[0107] In this embodiment of the invention, when a voltage detection mark is detected in the discharge system, the disconnecting switch is in the open position, and the contact wire is energized, the discharger is controlled to keep the disconnecting switch in the open position and lock it, and connect the contact wire to the track for discharge. This allows for real-time monitoring of the voltage changes in the contact wire, enabling on-site personnel to intuitively understand whether the contact wire is energized. Furthermore, keeping the disconnecting switch in the open position and locking it during discharge prevents accidental closing of the disconnecting switch due to incorrect operation, which could lead to energization of the contact wire and endanger on-site personnel, thus improving the operational safety of contact wire discharge.

[0108] Please see Figure 4 Another embodiment of the discharge device for the contact network in this invention includes:

[0109] The first detection module 301 is used to detect whether there is a voltage detection mark in the discharge system, whether the disconnecting switch of the contact network is in the open position, and to detect whether the contact network is energized through at least one voltage detection component.

[0110] The control module 302 is used to control the discharger to keep the disconnecting switch in the open position and lock it, and connect the contact network to the track to discharge if the discharge system detects that there is a voltage detection mark, the disconnecting switch is in the open position and the contact network is energized.

[0111] Optionally, the control module 302 is specifically used for:

[0112] The discharger is powered on by a preset discharge command;

[0113] Obtain the status information of the discharger, which is used to indicate whether the discharger is working in the discharge state;

[0114] If the status information of the discharger indicates that the discharger is in the discharge state, the control discharger will keep the disconnect switch in the open position and lock it, and connect the contact wire to the track to discharge.

[0115] Optionally, the first detection module 301 is specifically used for:

[0116] The actual voltage value of the contact network is obtained by acquiring at least one voltage detection component and then performing voltage conversion to obtain at least one analog voltage value, with each analog voltage value corresponding to a voltage detection component.

[0117] At least one analog voltage value is converted to a voltage value to obtain at least one target voltage value;

[0118] If at least one target voltage value is greater than or equal to the preset voltage value, the contact wire is determined to be energized.

[0119] If at least one target voltage value is less than the preset voltage value, then the contact wire is determined to be de-energized.

[0120] Optionally, the first detection module 301 is further used for:

[0121] Calculate the difference between the two target voltage values;

[0122] If the difference is greater than or equal to a preset threshold, a fault message is generated, which indicates that at least one of the two voltage detection components has malfunctioned.

[0123] Optionally, the discharge device for the overhead contact line may also include:

[0124] The generation module 303 is used to generate a prohibition operation prompt message if the discharge system is found to have no voltage detection mark or the disconnecting switch is in the closed position. The prohibition operation prompt message is used to indicate that the contact network is not de-energized and discharge operation is not allowed.

[0125] Optionally, the discharge device for the overhead contact line may also include:

[0126] The second detection module 304 is used to detect whether the contact network meets the preset grounding conditions;

[0127] The operation module 305 is used to control the grounding module to perform grounding operation on the contact network if the contact network meets the grounding conditions, control the discharger to power down, and keep the disconnecting switch in the open position and locked.

[0128] In this embodiment of the invention, when a voltage detection mark is detected in the discharge system, the disconnecting switch is in the open position, and the contact wire is energized, the discharger is controlled to keep the disconnecting switch in the open position and lock it, and connect the contact wire to the track for discharge. This allows for real-time monitoring of the voltage changes in the contact wire, enabling on-site personnel to intuitively understand whether the contact wire is energized. Furthermore, keeping the disconnecting switch in the open position and locking it during discharge prevents accidental closing of the disconnecting switch due to incorrect operation, which could lead to energization of the contact wire and endanger on-site personnel, thus improving the operational safety of contact wire discharge.

[0129] above Figure 3 and Figure 4 The discharge device for the contact network in this embodiment of the invention will be described in detail from the perspective of modular functional entities. The discharge system in this embodiment of the invention will be described in detail from the perspective of hardware processing.

[0130] Please see Figure 5 One embodiment of the discharge system in this invention:

[0131] Figure 5 This is a schematic diagram of a discharge system provided in an embodiment of the present invention. Figure 5 This is for illustrative purposes only. The specific locations of components and the routing of circuit wires can be adjusted according to the actual application scenario. Figure 5 The following example illustrates the situation where at least one voltage detection component is in the quantity of at least two.

[0132] The discharge system 500 includes: a controller 510, at least one voltage detection component 520 and a discharger 530, wherein the controller 510 is connected to at least one voltage detection component 520 and the discharger 530.

[0133] One end of the voltage detection component 520 is electrically connected to the contact network, and the other end is electrically connected to the controller 510. It is used to obtain the actual voltage value of the contact network and convert the actual voltage value into an analog voltage value.

[0134] The input end of the discharger 530 is electrically connected to the contact network, and the output end is electrically connected to the track. It is used to keep the contact network disconnector 540 in the open position and lock it when the discharger 530 is working in the discharge state, and to discharge the contact network.

[0135] The controller 510 is used to convert the analog voltage value into a target voltage value, detect whether the contact network is energized based on the target voltage value, detect whether the discharge system 500 has a voltage detection mark and whether the disconnect switch 540 is in the open position. When the contact network is detected to be energized, the discharge system 500 has a voltage detection mark and the disconnect switch 540 is in the open position, the controller 530 is controlled to keep the disconnect switch 540 in the open position and lock it, and connect the contact network to the track to discharge.

[0136] Please see Figure 6 Another embodiment of the discharge system in this invention:

[0137] Figure 6 This is a schematic diagram of a discharge system for discharging a contact network according to an embodiment of the present invention. Figure 6 This is for illustrative purposes only. The specific locations of components and the routing of circuit wires can be adjusted according to the actual application scenario. Figure 6 The following is an example of a device with at least two voltage detection components and a discharger including a first relay, a second relay, a third relay, an external knife switch interlocking module, an insulating baffle, and an insulating cover.

[0138] The discharge system 500 includes: a controller 510, at least one voltage detection component 520 and a discharger 530, wherein the controller 510 is connected to at least one voltage detection component 520 and the discharger 530.

[0139] One end of the voltage detection component 520 is electrically connected to the contact network, and the other end is electrically connected to the controller 510. It is used to obtain the actual voltage value of the contact network and convert the actual voltage value into an analog voltage value.

[0140] The input end of the discharger 530 is electrically connected to the contact network, and the output end is electrically connected to the track. It is used to keep the contact network disconnector 540 in the open position and lock it when the discharger 530 is working in the discharge state, and to discharge the contact network.

[0141] The controller 510 is used to convert the analog voltage value into a target voltage value, detect whether the contact network is energized based on the target voltage value, detect whether the discharge system 500 has a voltage detection mark and whether the disconnect switch 540 is in the open position. When the contact network is detected to be energized, the discharge system 500 has a voltage detection mark and the disconnect switch 540 is in the open position, the controller 530 is controlled to keep the disconnect switch 540 in the open position and lock it, and connect the contact network to the track to discharge.

[0142] The discharge system 500 also includes a grounding module 550, which is located between the contact wire and the track and is used to ground the contact wire.

[0143] The controller 510 is also used to detect whether the contact network meets the preset grounding conditions based on the target voltage value; when the contact network meets the grounding conditions, the controller grounding module 550 is used to perform grounding operation on the contact network, the controller discharger 530 is powered off, and the disconnecting switch 540 is kept in the open position and locked.

[0144] It is understood that the connection between the grounding module 550 and the controller 510 can be an electrical connection or a communication connection; this is not limited here. Figure 6 The connection between the grounding module and the controller is a communication connection.

[0145] In one feasible implementation, each voltage detection component 520 includes a fuse 5201 and a voltage sensor 5202. The fuse 5201 is located between the contact wire and the voltage sensor 5202. The input terminal of the discharger 530 is connected to the output terminal of the fuse 5201 and the input terminal of the voltage sensor 5202.

[0146] Specifically, fuse 5201 is used to disconnect the corresponding circuit when a circuit fault occurs. Voltage sensor 5202 is used to convert the actual voltage value of the contact network into an analog voltage value.

[0147] In one feasible implementation, the discharger 530 includes: a first relay 5301 and a second relay 5302; the first relay 5301 is electrically connected to the controller 510 and is used to generate status information of the discharger 530 and transmit it to the controller 510; the second relay 5302 is located between the contact wire and the track and is used to connect the contact wire and the track for discharge.

[0148] The first relay 5301 generates the status information of the discharger 530, which can be understood as the first relay 5301 switching from a normally open state to a normally closed state. The second relay 5302 connects the contact wire to the track for discharge, which can be understood as the second relay 5302 switching from a normally open state to a normally closed state.

[0149] In one possible implementation, the discharger 530 further includes a third relay 5303; the third relay 5303 is connected in series with the disconnect switch 540 and is used to keep the disconnect switch 540 in the open position and lock it.

[0150] The third relay 5303 keeps the disconnect switch 540 in the open position and locks it. This can be understood as the third relay 5303 switching from the normally closed state to the normally open state, so that the circuit in series between the third relay 5303 and the disconnect switch 540 becomes a disconnected circuit.

[0151] like Figure 7 As shown, Figure 7This is a schematic diagram of an embodiment of the present invention in which the powered-on third relay and the disconnecting switch are connected in series.

[0152] In one feasible implementation, the first relay 5301 is a normally open low-voltage relay; the second relay 5302 is a normally open high-voltage relay; and the third relay 5303 is a normally closed low-voltage relay.

[0153] In one possible implementation, the controller 510 includes: a fourth relay 5101 and a control unit 5102;

[0154] The fourth relay 5101 is used to control the discharger 530 to be powered on or off; the control unit 5102 is used to control the second relay 5302 to disconnect the target circuit of the contact wire disconnecting switch 550 when the status information of the discharger 530 indicates that the discharger 530 is working in the discharge state, and to control the third relay 5303 to connect the contact wire to the track for discharge.

[0155] In one feasible implementation, the first relay 5301 is electrically connected to the control unit 5102 in the controller 510, and the control unit 5102 acquires the status information of the discharger 530.

[0156] It should be noted that the first relay 5301, the second relay 5302, and the third relay 5303 are connected in parallel. It can be understood that the fourth relay 5101 is connected to the discharger 530. For example... Figure 8 As shown, Figure 8 This is a schematic diagram of an embodiment of the present invention in which three relays are connected in parallel.

[0157] In one feasible implementation, the discharger 530 further includes an external knife switch interlocking module 5304, which is connected to the controller 510 and is used to lock the open position of the disconnect switch 540, keeping the disconnect switch 540 in the open position and locked.

[0158] The external knife switch interlocking module 5304 and the controller 510 can be electrically connected or communicated, which is not limited here.

[0159] In one feasible embodiment, the discharger 530 further includes an insulating baffle 5305, which is disposed between the moving contact 5401 and the stationary contact 5402 of the disconnector 540. The insulating baffle 5305 is connected to the controller 510 and is used to be placed between the moving contact 5401 and the stationary contact 5402 and to contact the moving contact 5401, thereby keeping the disconnector 540 in the open position and locking it.

[0160] The insulating baffle 5305 and the controller 510 can be electrically connected or communicated, which is not limited here.

[0161] like Figure 9 As shown, Figure 9 This is a schematic diagram of an embodiment of the present invention in which an insulating baffle is used to keep the disconnecting switch in the open position and lock it.

[0162] In one feasible embodiment, the discharger 530 further includes an insulating cover 5306, which is disposed at the moving contact 5401 of the disconnecting switch 540. The insulating cover 5306 is connected to the controller 510 and is used to cover the moving contact 5401 of the disconnecting switch 540 and to contact the moving contact 5401 to keep the disconnecting switch 540 in the open position and lock it.

[0163] like Figure 10 As shown, Figure 10 This is a schematic diagram of an embodiment of the present invention in which the moving contact of the disconnecting switch is covered by an insulating cover.

[0164] In one feasible implementation, the discharge system further includes an external disconnector detection module 560.

[0165] The external disconnect switch detection module 560 is used to collect the disconnect switch position information of the disconnect switch 540, generate the status information of the disconnect switch 540 based on the disconnect switch position information, and send the status information of the disconnect switch 540 to the controller 510. The status information of the disconnect switch 540 is used to indicate whether the disconnect switch 540 is in the open position.

[0166] In one feasible implementation, the grounding module 550 includes: a grounding switch 5501 and a motor 5502; the grounding switch 5501 is used to connect the contact wire to the track for grounding; the motor 5502 is used to control the grounding switch 5501 to close.

[0167] 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, wherein the computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to perform the steps of the contact wire discharge method.

[0168] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0169] If the integrated unit is implemented as 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, in essence, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0170] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for discharging overhead contact lines, applied to a discharge system, characterized in that, The discharge system includes at least one voltage detection component and a discharger, and the discharge method for the contact network includes: The system detects whether the discharge system has a voltage detection indicator and whether the contact wire disconnect switch is in the open position. It then uses two voltage detection components to obtain the actual voltage value of the contact wire and performs voltage conversion to obtain two simulated voltage values. These simulated voltage values ​​are then converted to obtain two target voltage values. If both target voltage values ​​are greater than or equal to a preset voltage value, the contact wire is determined to be energized. The difference between the two target voltage values ​​is calculated. If the difference is greater than or equal to a preset threshold, a fault indication message is generated, indicating that at least one of the two voltage detection components has malfunctioned. If both target voltage values ​​are less than the preset voltage value, the contact wire is determined to be de-energized. If the discharge system detects an electrical detection mark, the disconnect switch is in the open position, and the contact wire is energized, then the discharger is controlled by a preset discharge command to keep the disconnect switch in the open position and lock it, and the contact wire is connected to the track to discharge.

2. The discharge method for the overhead contact line according to claim 1, characterized in that, The step of controlling the discharger to keep the disconnecting switch in the open position and lock it by controlling the discharger through a preset discharge command, and connecting the contact wire to the track for discharge, includes: The discharger is powered on by a preset discharge command; The status information of the discharger is obtained, and the status information of the discharger is used to indicate whether the discharger is working in the discharge state. If the status information of the discharger indicates that the discharger is in the discharge state, then the discharger is controlled to keep the disconnect switch in the open position and lock it, and connect the contact wire to the track to discharge.

3. The method for discharging a contact network according to any one of claims 1-2, characterized in that, After detecting whether the discharge system has a voltage detection mark, whether the contact wire disconnect switch is in the open position, and detecting whether the contact wire is energized using at least one voltage detection component, the method further includes: If the discharge system is found to lack a voltage detection indicator or the disconnect switch is in the closed position, a prohibition operation prompt message is generated. The prohibition operation prompt message is used to indicate that the contact network is not de-energized and that discharge operation is not allowed.

4. The method for discharging overhead contact lines according to claim 1, characterized in that, The discharge system further includes a grounding module, which, after controlling the discharger to keep the disconnecting switch in the open position and lock it by a preset discharge command, and connecting the contact wire to the track for discharge, also includes: Detect whether the contact network meets the preset grounding conditions; If the contact network meets the grounding conditions, the grounding module is controlled to perform a grounding operation on the contact network, the discharger is powered off, and the disconnecting switch is kept in the open position and locked.

5. A discharge device for a contact wire, applied in a discharge system, characterized in that, The discharge system includes at least one voltage detection component and a discharger, and the discharge device for the contact network includes: The first detection module is used to detect whether the discharge system has a voltage detection mark and whether the contact wire disconnect switch is in the open position. It acquires the actual voltage value of the contact wire using two voltage detection components and converts it to obtain two simulated voltage values. The two simulated voltage values ​​are then converted to obtain two target voltage values. If both target voltage values ​​are greater than or equal to a preset voltage value, the contact wire is determined to be energized. The difference between the two target voltage values ​​is calculated. If the difference is greater than or equal to a preset threshold, a fault indication message is generated, indicating that at least one of the two voltage detection components has malfunctioned. If both target voltage values ​​are less than the preset voltage value, the contact wire is determined to be de-energized. The control module is used to control the discharger to keep the disconnect switch in the open position and lock it, and connect the contact network to the track to discharge, if the discharge system detects that there is a voltage detection mark, the disconnect switch is in the open position and the contact network is energized.

6. A discharge system, characterized in that, The discharge system includes: a controller, at least one voltage detection component, and a discharger, wherein the controller is connected to both the at least one voltage detection component and the discharger; One end of the voltage detection component is electrically connected to the contact network, and the other end is electrically connected to the controller. It is used to obtain the actual voltage value of the contact network and convert the actual voltage value into an analog voltage value. The input end of the discharger is electrically connected to the contact network, and the output end is electrically connected to the track. It is used to keep the disconnecting switch of the contact network in the open position and lock it when the discharger is working in the discharge state, and to discharge the contact network. The controller is configured to acquire the actual voltage value of the contact network through the two voltage detection components and convert it to obtain two analog voltage values; convert the two analog voltage values ​​to obtain two target voltage values; if both target voltage values ​​are greater than or equal to a preset voltage value, the contact network is determined to be energized, and the difference between the two target voltage values ​​is calculated. If the difference is greater than or equal to a preset threshold, a fault indication message is generated, indicating that at least one of the two voltage detection components has malfunctioned; if both target voltage values ​​are less than the preset voltage value, the contact network is determined to be de-energized, and the presence of a voltage detection mark in the discharge system and the disconnect switch being in the open position are detected. When the contact network is detected to be energized, the discharge system has a voltage detection mark, and the disconnect switch is in the open position, the controller controls the discharger to keep the disconnect switch in the open position and lock it, and connects the contact network to the track for discharge.

7. The discharge system according to claim 6, characterized in that, Each of the voltage detection components includes a fuse and a voltage sensor. The fuse is located between the contact wire and the voltage sensor. The input terminal of the discharger is connected to the output terminal of the fuse and the input terminal of the voltage sensor.

8. The discharge system according to claim 6, characterized in that, The discharger includes a first relay and a second relay; The first relay is electrically connected to the controller and is used to generate the status information of the discharger and transmit it to the controller; The second relay is located between the contact wire and the track, and is used to connect the contact wire and the track for discharge.

9. The discharge system according to claim 8, characterized in that, The discharger also includes a third relay; The third relay is connected in series with the disconnecting switch and is used to keep the disconnecting switch in the open position and lock it.

10. The discharge system according to claim 8, characterized in that, The discharger also includes an external knife switch interlocking module; The external disconnector interlocking module is connected to the controller and is used to lock the disconnector switch in the open position, keeping the disconnector switch in the open position and locked.

11. The discharge system according to claim 8, characterized in that, The discharger also includes an insulating baffle; The insulating baffle is disposed between the moving contact and the stationary contact of the disconnecting switch. The insulating baffle is connected to the controller and is used to place between the moving contact and the stationary contact, and to contact the moving contact, so as to keep the disconnecting switch in the open position and lock it.

12. A computer-readable storage medium storing instructions thereon, characterized in that, When the instructions are executed by the processor, they implement the discharge method for the contact network as described in any one of claims 1-4.

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