Visual grounding equipment, system, grounding detection method, device and storage medium

Abstract

The present invention relates to the field of contact networks and discloses a visual grounding device, system, grounding detection method, apparatus, and storage medium for improving detection efficiency. The visual grounding device includes: an electrical test locking controller, a detection controller, and a sensing component. The sensing component includes a first current transformer, a second current transformer, and a bipolar electric knife switch. The bipolar electric knife switch includes a first knife switch, a second knife switch, a drive motor, and a drive component. The bipolar electric knife switch is electrically connected to the contact network and the rail, respectively, to form a detection loop. The detection loop includes a first grounding branch and a second grounding branch. The first grounding branch includes a first knife switch, and the second grounding branch includes a second knife switch. The sensing component is used to generate and collect induced current. The electrical test locking controller is used to perform logical judgment on the detection conditions and perform output control according to the judgment results. The detection controller is used to drive the sensing component to generate induced current and generate detection results based on the induced current.

Description

Technical Field

[0001] The present invention relates to the field of contact networks, and in particular to a visual grounding device, system, grounding detection method, device and storage medium. Background Art

[0002] The contact network is connected to the rails through the grounding wire. The grounding wire includes an internet cable, a grounding switch and a return rail cable. One end of the internet cable is connected to the contact network, and the other end is connected to one end of the grounding switch, forming two contact points. The other end of the grounding switch is connected to one end of the return rail cable, and the other end of the return rail cable is connected to the rails, forming two contact points. That is to say, a grounding wire contains at least 4 contact points, and each contact point will affect the state of the grounding wire. When the 4 contact points are in good contact, the grounding state of the contact network is well grounded. When at least one of the 4 contact points is in a virtual connection, the grounding state of the contact network is poorly grounded. At this time, although the grounding switch is in a closed position, the contact network cannot be truly grounded, and there is a great safety hazard.

[0003] There are two scenarios for grounding status detection: one is to detect when the catenary is energized, and the other is to detect when the catenary is de-energized. In the de-energized catenary scenario, the current detection method is to form a loop between the ground wire to be tested and other ground wires in the distribution network, and perform induction detection based on an external excitation power supply. However, when a poor grounding condition is detected, it is impossible to immediately determine whether the poor contact is with the ground wire to be tested or with other ground wires. Secondary confirmation is required to obtain the detection result, which is inefficient. Summary of the Invention

[0004] The main purpose of the present invention is to provide a visual grounding device, system, grounding detection method, apparatus and storage medium, which are used to solve the problem of needing secondary detection to confirm the abnormal state of the grounding wire when the contact network is without power, thereby improving detection efficiency.

[0005] The first aspect of the present invention provides a visual grounding device, comprising: an electrical test locking controller, a detection controller and a sensing component, wherein the electrical test locking controller is communicatively connected to the detection controller, and the detection controller is electrically connected to the sensing component; the sensing component comprises a first current transformer, a second current transformer and a bipolar electric knife switch; the detection controller is electrically connected to the first current transformer, the second current transformer and the bipolar electric knife switch respectively; the bipolar electric knife switch comprises a first knife switch, a second knife switch, a drive motor and a drive component, the drive component is insulated from the first knife switch and the second knife switch respectively, and the drive motor is used to drive the first knife switch and the second knife switch to open and close synchronously through the drive component; the bipolar electric knife switch is electrically connected to the grounding device. The contact network and the rails are electrically connected to form a detection loop, which includes a first grounding branch and a second grounding branch, the first grounding branch includes the first knife switch, and the second grounding branch includes the second knife switch; the first current transformer and the second current transformer are ring current transformers, and the detection loop passes through the first current transformer and the second current transformer; one of the first current transformer and the second current transformer is used to generate induced current, and the other is used to collect induced current; the electrical test locking controller is used to receive detection instructions, perform logical judgment on the detection conditions and perform output control according to the judgment results; the detection controller is used to drive the sensing component to generate induced current, and generate detection results based on the induced current.

[0006] A second aspect of the present invention provides a visual grounding system, comprising: a system workstation, a communication management machine, a convergence layer switch, and multiple visual grounding devices; the communication management machine is in communication connection with the system workstation and the convergence layer switch, respectively, and the convergence layer switch is in communication connection with each visual grounding device. The system workstation is configured to send detection instructions and receive detection results from the visual grounding devices; the communication management machine is configured to receive instructions sent by the system workstation and send the detection instructions to the corresponding visual grounding devices via the convergence layer switch; and the visual grounding devices are configured to detect the grounding status of the contact network.

[0007] The third aspect of the present invention provides a grounding detection method, which is applied to a visual grounding device, wherein the visual grounding device includes a test lock controller, a detection controller and a sensing component, including: when a grounding detection instruction is received, the test lock controller is used to determine whether the preset detection conditions are met; if so, the detection controller is used to drive the sensing component to generate and collect an induced current; and a detection result is generated based on the induced current.

[0008] The fourth aspect of the present invention provides a grounding detection device, including: a judgment module, which is used to determine whether the preset detection conditions are met through the electrical test locking controller when a grounding detection instruction is received; a driving module, which is used to drive the sensing component to generate and collect the induced current through the detection controller if the conditions are met; and a generation module, which is used to generate a detection result based on the induced current.

[0009] A fifth 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 grounding detection method.

[0010] In the technical solution provided by the present invention, the electric test locking controller, the detection controller and the induction component, the electric test locking controller is communicatively connected with the detection controller, and the detection controller is electrically connected with the induction component; the induction component includes a first current transformer, a second current transformer and a bipolar electric knife switch; the detection controller is electrically connected with the first current transformer, the second current transformer and the bipolar electric knife switch respectively; the bipolar electric knife switch includes a first knife switch, a second knife switch, a drive motor and a drive component, the drive component is insulated from the first knife switch and the second knife switch respectively, and the drive motor is used to drive the first knife switch and the second knife switch to open and close synchronously through the drive component; the bipolar electric knife switch is connected to the contact network and the rail. The first and second current transformers are electrically connected to form a detection loop, the detection loop including a first grounding branch and a second grounding branch, the first grounding branch including the first knife switch, and the second grounding branch including the second knife switch; the first current transformer and the second current transformer are ring current transformers, and the detection loop passes through the first and second current transformers; one of the first and second current transformers is used to generate an induced current, and the other is used to collect the induced current; the electrical detection lock controller is used to receive a detection instruction, perform a logical judgment on the detection condition, and perform an output control based on the judgment result; the detection controller is used to drive the sensing component to generate an induced current and generate a detection result based on the induced current. In an embodiment of the present invention, a detection loop is formed by electrically connecting the bipolar electric knife switch in the visual grounding device to the contact network and the rail respectively. When the contact network is without power, the grounding status of the contact network can be detected by the induced current generated by the sensing component in the detection loop. There is no need to use grounding wires in other locations for detection. The accurate grounding status of the contact network can be obtained in one detection, thereby improving detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of an embodiment of a visual grounding device according to an embodiment of the present invention;

[0012] Figure 2 Schematic diagram of a detection circuit in an embodiment of the present invention;

[0013] Figure 3 A schematic diagram of another embodiment of a visual grounding device according to an embodiment of the present invention;

[0014] Figure 4 This is a schematic diagram of an embodiment of a visual grounding system according to an embodiment of the present invention;

[0015] Figure 5 A schematic diagram of an embodiment of a ground detection method according to an embodiment of the present invention;

[0016] Figure 6 A schematic diagram of another embodiment of a ground detection method according to an embodiment of the present invention;

[0017] Figure 7 A schematic diagram of another embodiment of a ground detection method according to an embodiment of the present invention;

[0018] Figure 8 FIG. 1 is a schematic diagram of an embodiment of a grounding detection device in an embodiment of the present invention. DETAILED DESCRIPTION

[0019] Embodiments of the present invention provide a visual grounding device, system, grounding detection method, apparatus, and storage medium for improving detection efficiency.

[0020] The terms "first," "second," "third," "fourth," and the like (if any) in the description and claims of the present invention and in the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable 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 apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or apparatus.

[0021] First, the visual grounding equipment is explained, such as Figure 1 As shown, the visual grounding device includes an electrical test and locking controller 110 , a detection controller 120 and a sensing component 130 . The electrical test and locking controller 110 is communicatively connected to the detection controller 120 , and the detection controller 120 is electrically connected to the sensing component 130 .

[0022] The electrical test locking controller 110 is used to receive a detection instruction, perform a logical judgment on the detection condition and perform output control according to the judgment result. If the detection condition is met, the detection controller 120 is controlled to perform a grounding detection.

[0023] The detection controller 120 is used to drive the sensing component to generate a sensing current, and generate a detection result based on the sensing current.

[0024] Driven by the detection controller 120, the sensing component 130 generates and collects induced current. The sensing component 130 includes a first current transformer 131, a second current transformer 132, and a bipolar electric knife switch 133. The detection controller is electrically connected to the first current transformer, the second current transformer, and the bipolar electric knife switch, respectively, and can detect the open and closed states of the bipolar electric knife switch.

[0025] The bipolar electric knife switch 133 includes a first knife switch, a second knife switch, a drive motor and a drive component. The drive component is insulated and connected to the first knife switch and the second knife switch respectively. The drive motor is connected to the drive component. The drive motor is used to drive the first knife switch and the second knife switch to open and close synchronously through the drive component. The drive component includes an insulating connecting rod.

[0026] The bipolar electric knife switch 133 is used to construct a detection circuit together with the contact network and the rail. Specifically, the two ends of the first knife switch are electrically connected to the contact network and the rail respectively to form a first grounding branch, and the two ends of the second knife switch are electrically connected to the contact network and the rail respectively to form a second grounding branch. The first grounding branch, the second grounding branch, and the contact network and the rail between the first grounding branch and the second grounding branch together constitute a detection circuit. Figure 2 As shown, T1 is the first knife switch, T2 is the second knife switch, M is the drive motor, the first knife switch is on the first grounding branch, the second knife switch is on the second grounding branch, the first grounding branch and the second grounding branch intersect with the contact network at point A and point B respectively, the first grounding branch and the second grounding branch intersect with the rail at point C and point B respectively, and the ABCD circuit is the detection circuit.

[0027] The first current transformer and the second current transformer are ring-shaped current transformers, i.e., through-type current transformers, and the detection loop passes through the first current transformer and the second current transformer. Optionally, the first grounding branch or the second grounding branch passes through the inner area of ​​the ring of the first current transformer, and the first grounding branch or the second grounding branch passes through the inner area of ​​the ring of the second current transformer. In other words, the first current transformer and the second current transformer can be passed through by the same grounding wire or by different grounding wires. The first current transformer can be set at any position on the first grounding branch or the second grounding branch, and the second current transformer can also be set at any position on the first grounding branch or the second grounding branch, as long as no position conflict or collision occurs.

[0028] One of the first current transformer 131 and the second current transformer 132 is used to generate an induced current, and the other current transformer is used to detect the induced current.

[0029] The detection controller controls the external power supply to input a drive signal to the sensing component. A current transformer in the sensing component generates a magnetic field signal corresponding to the drive signal. The magnetic field signal generates an induced current in the detection circuit. The other current transformer detects the magnitude of the induced current based on its own transformation ratio.

[0030] When the induced current is large, the grounding state of the contact network is determined to be normal grounding. When the induced current is small, the grounding state of the contact network is determined to be abnormal grounding. The reason for the abnormal grounding is that there is a breakpoint in the first grounding branch or the second grounding branch or the line contact is poor.

[0031] It should be noted that in the power system, a grounding wire is usually set at both ends of each section of the contact network. The grounding of the contact network is judged by the open and closed status of the grounding knife switch on the grounding wire. Since the bipolar electric knife switch in the visual grounding device of the present invention connects the contact network and the rail, it plays the role of the contact network grounding wire. After using the visual grounding device, the first grounding branch or the second grounding branch replaces the conventional grounding wire. The grounding status detected by the visual grounding device is the grounding status of the corresponding contact network segment, which is simply referred to as the grounding status of the contact network.

[0032] By visually connecting the bipolar electric knife switch in the grounding equipment to the contact network and the rails respectively to form a detection circuit, when the contact network has no power, the grounding status of the contact network can be detected by the induced current generated by the induction component in the detection circuit. There is no need to use it in conjunction with the grounding wire at other locations for detection. The accurate grounding status of the contact network can be obtained in one detection, thereby improving detection efficiency.

[0033] Optionally, the first current transformer is arranged on the side of the first knife switch or the second knife switch adjacent to the rail, and the second current transformer is also arranged on the side of the first knife switch or the second knife switch adjacent to the rail. In this way, when the contact network is energized, it will not affect the normal power supply of the contact network and also protect the current transformer.

[0034] There are four situations for the position distribution of the first current transformer and the second current transformer in the detection circuit, as follows:

[0035] 1. The first grounding branch passes through the first current transformer and the second current transformer. The first current transformer and the second current transformer are both arranged on the side of the first switch adjacent to the rail;

[0036] 2. The second grounding branch passes through the first current transformer and the second current transformer, and the first current transformer and the second current transformer are both arranged on the side of the second switch adjacent to the rail;

[0037] 3. The first grounding branch passes through the first current transformer, and the second grounding branch passes through the second current transformer. The first current transformer is arranged on the side of the first switch adjacent to the rail, and the second current transformer is arranged on the side of the second switch adjacent to the rail;

[0038] 4. The first grounding branch passes through the second current transformer, and the second grounding branch passes through the first current transformer. The first current transformer is arranged on the side of the second knife switch adjacent to the rail, and the second current transformer is arranged on the side of the first knife switch adjacent to the rail.

[0039] Optionally, the detection controller 120 includes an input interface, a power supply module, and a control module, such as Figure 3 As shown, the input interface is connected to the external power supply, the input interface, the power supply module and the control module are electrically connected in sequence, and the control module is communicatively connected to the electrical test locking controller.

[0040] The power supply module is electrically connected to a target current transformer, which is a first current transformer or a second current transformer. The power supply module is used to supply power to the target current transformer, which is used to generate an inductive power supply.

[0041] The control module is electrically connected to a non-target current transformer, which is a current transformer that is not determined as a target current transformer among the first current transformer and the second current transformer, and is used to collect induced current.

[0042] The control module is used to collect induced current through a non-target current transformer and detect the grounding state of the contact network according to the collected induced current.

[0043] Optionally, the power supply module includes an AC transformer and a relay, which are electrically connected to the AC transformer and the relay. The AC transformer is used to convert the electrical signal input by the external power supply into the required electrical signal, for example, converting the electrical signal of the mains into a 10V, 100Hz electrical signal. The relay is electrically connected to the locking controller, and the locking controller controls the on and off of the relay to enable the power supply module to drive the target current transformer. There are two ways to install the AC transformer and the relay. One is that the relay is electrically connected to the input interface and the AC transformer is electrically connected to the target current transformer, and the other is that the relay is electrically connected to the target current transformer and the AC transformer is electrically connected to the input interface.

[0044] Optionally, the visual grounding device further includes a photoelectric switch, which is communicatively connected to the electrical test locking controller and is used to exchange internal and external signals of the visual grounding device.

[0045] Optionally, the visual grounding device also includes a voltage sensor, usually there are at least two voltage sensors, both ends of all voltage sensors are connected to the two ends of the first knife switch or the second knife switch respectively, and the grounding status of the contact network is judged based on the at least two detected voltages and the actual voltage of the contact network. The grounding status of the contact network can be detected when the contact network is energized. At this time, the visual grounding device can detect the grounding status of the contact network when the contact network is de-energized or energized.

[0046] Optionally, the visual grounding device also includes a local detection module, which is used to generate local detection instructions and obtain corresponding detection results. The local detection module includes a detection button and an indicator light component. The detection button is used to generate local detection instructions based on external trigger operations, and the indicator light component is used to indicate the detection results.

[0047] The detection button can be set on the electrical test locking controller, or it can be set separately outside the electrical test locking controller. When the detection button is set separately outside the electrical test locking controller, the detection button is electrically connected to the electrical test locking controller, and the user can generate a detection instruction locally through the detection button. After receiving the detection instruction, the electrical test locking controller performs a logical judgment on the detection conditions and performs control according to the judgment result. If the detection conditions are met, the detection controller drives the sensing component to generate an induced current, and generates a detection result based on the induced current. The detection result is sent to the local detection module, and the detection result is displayed through the indicator light component.

[0048] Next, we will explain the visual grounding system. Figure 4 As shown, the visual grounding system includes a system workstation, a communication management machine, a convergence layer switch and multiple visual grounding devices.

[0049] The communication management machine is communicated with the system workstation and the aggregation layer switch respectively, and the aggregation layer switch is communicated with each visual grounding device.

[0050] The system workstation is used to send detection instructions and receive detection results from the visual grounding device. The communication management machine is used to receive the instructions sent by the system workstation and send the detection instructions to the corresponding visual grounding device through the aggregation layer switch. The visual grounding device is used to detect the grounding status of the contact network.

[0051] The visual grounding system realizes remote control detection. The control process is as follows: the system workstation issues a detection instruction, which is sent to the voltage test lock controller of the visual grounding device through the communication management machine via the aggregation layer switch. After receiving the detection instruction, the voltage test lock controller performs logical judgment on the detection conditions. When the detection conditions are met, the voltage test lock controller controls the detection controller to drive the sensing component to generate an induced current, generates a detection result based on the induced current, and then transmits the detection result back to the voltage test lock controller. The voltage test lock controller then transmits the detection result back to the system workstation through the aggregation layer switch and the communication management machine to realize remote monitoring.

[0052] The above describes the visual grounding device and visual grounding system in the embodiments of the present invention. The following describes the specific process of the embodiments of the present invention. It should be understood that the present invention can be implemented by either a grounding detection device or a visual grounding device, without limitation. The embodiments of the present invention are described using the visual grounding device as an example.

[0053] See also Figure 5 , an embodiment of the grounding detection method in the embodiment of the present invention includes:

[0054] 501. When a grounding detection instruction is received, the electrical test locking controller is used to determine whether the detection conditions are met.

[0055] The visual grounding device includes an electrical detection locking controller, a detection controller and a sensing component.

[0056] When the visual grounding device receives a grounding detection instruction, the visual grounding device determines whether the detection conditions are met through the locking controller. Only when the detection conditions are met can the visual grounding device perform detection. The detection conditions are that the induced current can be detected based on the detection circuit built by the induction component, contact network and rail.

[0057] 502. If the conditions are met, the detection controller drives the sensing component to generate and collect the induced current.

[0058] If the conditions are met, the detection controller provides an electrical signal to a current transformer in the sensing component to generate an induced current, and the induced current is collected by another current transformer in the sensing component.

[0059] 503. Generate a detection result based on the induced current.

[0060] The induced current is analyzed and processed by the detection controller to obtain a detection result, which indicates the grounding state of the contact network.

[0061] In an embodiment of the present invention, the visual grounding device, the contact network and the rails together constitute a detection circuit. The grounding status of the contact network when there is no power is detected based on the induced current generated by the induction component in the detection circuit. There is no need to use grounding wires at other locations for detection. The accurate grounding status of the contact network can be obtained in one detection, thereby improving detection efficiency.

[0062] See also Figure 6 Another embodiment of the grounding detection method in the embodiment of the present invention includes:

[0063] 601. When a grounding detection instruction is received, the electrical test locking controller is used to determine whether the detection conditions are met.

[0064] The visual grounding device includes an electrical detection locking controller, a detection controller and a sensing component.

[0065] The visual grounding device determines whether the bipolar electric knife switch in the sensing component is in a single circuit without power and without a disconnection point through the electric detection locking controller. If so, it is determined that the detection condition is met; if not, it is determined that the detection condition is not met.

[0066] Specifically, as long as the following five points are met at the same time, the power-checking locking controller will determine that the bipolar electric knife switch is in a single circuit without power and without a disconnection point:

[0067] 1) There is no electricity in the contact network or the isolation switches corresponding to the first grounding branch and the second grounding branch are in the open state;

[0068] 2) The bipolar electric knife switch is in the closed state;

[0069] 3) The inter-zone contact switches of the target power supply station corresponding to the first grounding branch and the second grounding branch are in the open state;

[0070] 4) The inter-zone interconnection switch of the neighboring power supply station of the target power supply station is in the open state;

[0071] 5) The grounding switch of the adjacent grounding wire belonging to a different power supply station from the first grounding branch / the second grounding branch is in the open state.

[0072] 602. If the conditions are met, the detection controller drives the sensing component to generate and collect the induced current.

[0073] In this embodiment, step 602 is the same as step 502 and will not be described again here.

[0074] 603. Generate a detection result based on the induced current.

[0075] The visual grounding device determines the target resistance value based on the induced current and the preset voltage. If the target resistance value is greater than or equal to the preset resistance value, the contact network is determined to be well grounded as the detection result. If the target resistance value is less than the preset resistance value, the contact network is determined to be poorly grounded as the detection result.

[0076] Since the resistance value of the line intuitively shows the status of the line, the induced current is converted into a resistance value and compared with the preset resistance value to accurately determine whether the contact network is normally grounded.

[0077] 604. If not, identify abnormal factors that do not meet the detection conditions.

[0078] Abnormal factors include at least one of the following: the contact network has power, the first grounding branch and the isolating switch corresponding to the first grounding branch are in the closed state, the bipolar electric switch is in the open state, the inter-zone interconnection switch of the target power supply station is in the closed state, the inter-zone interconnection switch of the neighboring power supply station is in the closed state, and the grounding switch of the adjacent grounding line is in the closed state.

[0079] 605. Adjust the abnormal factors until the electrical test lock controller determines that the detection conditions are met.

[0080] The visual grounding device sends a reminder message to the management terminal, and the reminder message includes abnormal factors. After the visual grounding device receives the feedback information from the management terminal, it re-determines whether the detection conditions are met through the electrical test locking controller. If not, it continues to identify abnormal factors that do not meet the detection conditions and adjusts the abnormal factors until the electrical test locking controller determines that the detection conditions are met. The management terminal can be a system workstation of the visual grounding system.

[0081] 606. Drive the induction component to generate an induction current through the detection controller.

[0082] The visual grounding device provides an electrical signal to a current transformer in the sensing component through a detection controller to generate an induced current, and collects the induced current through another current transformer.

[0083] 607. Generate a detection result based on the induced current.

[0084] In this embodiment, step 607 is the same as step 503 and will not be described again here.

[0085] In an embodiment of the present invention, the visual grounding device, the contact network and the rails together constitute a detection circuit. The grounding status of the contact network when there is no power is detected based on the induced current generated by the induction component in the detection circuit. There is no need to use grounding wires at other locations for detection. The accurate grounding status of the contact network can be obtained in one detection, thereby improving detection efficiency.

[0086] See also Figure 7, an embodiment of the grounding detection method in the embodiment of the present invention includes:

[0087] 701. When a grounding detection instruction is received, the electrical test locking controller is used to determine whether the detection conditions are met.

[0088] 702. If the conditions are met, the detection controller drives the sensing component to generate and collect the induced current.

[0089] 703. Generate a detection result based on the induced current.

[0090] Steps 701-703 of this embodiment are the same as steps 601-603 and will not be repeated here.

[0091] 704. Monitor the sensing component through the detection controller.

[0092] During the inspection of the visual grounding equipment, it is simultaneously determined whether the preset inspection end conditions are met. The inspection end conditions are that the inspection results are generated or the detection controller continuously drives the sensing component for a time period greater than the preset time period. If so, the detection controller is controlled to stop driving the sensing component; if not, the sensing component is continued to be monitored by the detection controller.

[0093] Specifically, on the one hand, when it is detected that the detection result is generated, it is determined that the detection is completed, and the detection controller is used to disconnect the drive of the sensing component; on the other hand, when the detection controller continuously drives the sensing component for longer than the preset time, the detection result has not been generated, and a fault may have occurred at this time. In order to avoid abnormal situations, the detection controller is also used to disconnect the drive of the sensing component and report the detection abnormality.

[0094] In an embodiment of the present invention, a visual grounding device, a contact network and a rail jointly constitute a detection circuit. The grounding state of the contact network when there is no power is detected based on the induced current generated by the induction component in the detection circuit. There is no need to cooperate with grounding wires in other positions for detection. The accurate grounding state of the contact network can be obtained by one detection, thereby improving the detection efficiency. During the detection process, the induction component is monitored synchronously, and the drive to the induction component is disconnected when the detection end condition is met, thereby avoiding safety hazards caused by long-term driving due to faults and improving safety.

[0095] The grounding detection method according to the embodiment of the present invention is described above. The grounding detection device according to the embodiment of the present invention is described below. Figure 8 , an embodiment of the grounding detection device in the embodiment of the present invention includes:

[0096] The judgment module 801 is used to judge whether the preset detection conditions are met through the electrical detection lock controller when a ground detection instruction is received;

[0097] A driving module 802 is configured to drive the sensing component to generate and collect an induced current through the detection controller if the conditions are met;

[0098] The generating module 803 is configured to generate a detection result based on the induced current.

[0099] Optionally, the judgment module 801 is specifically configured to:

[0100] The electric test locking controller is used to determine whether the bipolar electric knife switch in the sensing component is in a single circuit with no power and no disconnection point; if so, it is determined that the detection condition is met; if not, it is determined that the detection condition is not met.

[0101] Optionally, the generating module 803 is specifically configured to:

[0102] A target resistance value is determined based on the induced current and the preset voltage; if the target resistance value is greater than or equal to the preset resistance value, the contact network is determined to be well grounded as the detection result; if the target resistance value is less than the preset resistance value, the contact network is determined to be poorly grounded as the detection result.

[0103] Optionally, the grounding detection device further includes:

[0104] The monitoring module 804 is configured to monitor the sensing component via the detection controller.

[0105] Optionally, the monitoring module 804 is specifically configured to:

[0106] Determine whether a preset detection end condition is met, where the detection end condition is that a detection result is generated or the detection controller continuously drives the sensing component for a time period greater than a preset time period; if not, continue to monitor the sensing component through the detection controller.

[0107] Optionally, the grounding detection device further includes a detection module 805, which is specifically configured to:

[0108] If not, identify the abnormal factors that do not meet the detection conditions; adjust the abnormal factors until the electrical test lock controller determines that the detection conditions are met; drive the induction component to generate an induced current through the detection controller; and generate a detection result based on the induced current.

[0109] In an embodiment of the present invention, a detection circuit is formed by the bipolar electric knife switch, contact network and rails in the visual grounding equipment. The grounding status of the contact network when there is no power is detected based on the induced current generated by the induction component in the detection circuit. There is no need to use grounding wires in other positions for detection. The accurate grounding status of the contact network can be obtained by one detection, thereby improving detection efficiency.

[0110] Those skilled in the art will 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.

[0111] 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 and includes several instructions for enabling a computer device (which can be a personal computer, server, or 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), magnetic disk or optical disk, etc., various media that can store program code.

[0112] 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 above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features thereof can 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 visual grounding device, characterized in that: The visual grounding device includes: An electrical test locking controller, a detection controller and an induction component, wherein the electrical test locking controller is communicatively connected to the detection controller, and the detection controller is electrically connected to the induction component; The induction component includes a first current transformer, a second current transformer and a bipolar electric knife switch; The detection controller is electrically connected to the first current transformer, the second current transformer and the bipolar electric knife switch respectively; The bipolar electric knife switch includes a first knife switch, a second knife switch, a drive motor and a drive component, wherein the drive component is insulated and connected to the first knife switch and the second knife switch respectively, and the drive motor is used to drive the first knife switch and the second knife switch to open and close synchronously through the drive component; The bipolar electric knife switch is electrically connected to the contact network and the rail respectively to form a detection circuit, wherein the detection circuit includes a first grounding branch and a second grounding branch, the first grounding branch includes the first knife switch, and the second grounding branch includes the second knife switch; The first current transformer and the second current transformer are ring current transformers, and the detection loop passes through the first current transformer and the second current transformer; One of the first current transformer and the second current transformer is used to generate an induced current, and the other is used to collect the induced current; The electric test lock controller is used to receive a test instruction, perform a logical judgment on the test conditions and perform an opening control according to the judgment result; The detection controller is used to drive the sensing component to generate an induced current and generate a detection result based on the induced current.

2. The visual grounding device according to claim 1, characterized in that: The first current transformer is arranged on the side of the first knife switch adjacent to the rail or the side of the second knife switch adjacent to the rail, and the second current transformer is arranged on the side of the first knife switch adjacent to the rail or the side of the second knife switch adjacent to the rail.

3. The visual grounding device according to claim 1, characterized in that: The detection controller includes an input interface, a power supply module and a control module; The input interface is connected to an external power supply, the input interface, the power supply module and the control module are electrically connected in sequence, and the control module is communicatively connected to the electrical test and locking controller; The power supply module is electrically connected to a target current transformer, the target current transformer is the first current transformer or the second current transformer, and the power supply module is used to supply power to the target current transformer; The control module is electrically connected to a non-target current transformer, where the non-target current transformer is a current transformer that is not determined as a target current transformer among the first current transformer and the second current transformer; The control module is used to collect induced current through the non-target current transformer and detect the grounding state of the contact network according to the collected induced current.

4. The visual grounding device according to claim 3, characterized in that: The power supply module includes an AC transformer and a relay, and the relay is electrically connected to the AC transformer.

5. The visual grounding device according to claim 1, characterized in that: The visual grounding device also includes: A photoelectric switch is communicatively connected to the electrical test locking controller.

6. The visual grounding device according to claim 1, characterized in that: The visual grounding device also includes: A voltage sensor is used to detect the voltage of the contact network.

7. The visual grounding device according to any one of claims 1 to 6, characterized in that: The visual grounding device also includes: Local detection module, used to generate local detection instructions and obtain local detection results; The local detection module includes a detection button and an indicator light component. The detection button is used to generate a local detection instruction based on an external trigger operation, and the indicator light component is used to indicate the detection result.

8. The visual grounding device according to claim 7, characterized in that: The detection button is arranged on the electrical test locking controller.

9. A visual grounding system, characterized in that: The visual grounding system includes: A system workstation, a communication management machine, a convergence layer switch, and a plurality of visual grounding devices according to any one of claims 1 to 8; The communication management machine is in communication connection with the system workstation and the aggregation layer switch respectively, and the aggregation layer switch is in communication connection with each visual grounding device; The system workstation is used to send detection instructions and receive detection results of the visual grounding equipment; The communication management machine is used to receive the instruction sent by the system workstation and send the detection instruction to the corresponding visual grounding device through the aggregation layer switch; The visual grounding device is used to detect the grounding status of the contact network.

10. A grounding detection method, applied to the visual grounding device according to any one of claims 1 to 8, wherein the visual grounding device comprises an electrical test lock controller, a detection controller, and a sensing component, wherein: The grounding detection method comprises: When a grounding detection instruction is received, the electrical detection locking controller determines whether a preset detection condition is met; If the conditions are met, the detection controller drives the sensing component to generate and collect the induced current; A detection result is generated based on the induced current.

11. The grounding detection method according to claim 10, characterized in that: The determining whether a preset detection condition is met by the electrical test locking controller includes: The electric detection locking controller is used to determine whether the bipolar electric knife switch in the sensing component is in a single circuit without power and without a disconnection point; If so, it is determined that the detection condition is met; If not, it is determined that the detection condition is not met.

12. The grounding detection method according to claim 10, characterized in that: Generating a detection result based on the induced current includes: determining a target resistance value according to the induced current and a preset voltage; If the target resistance value is greater than or equal to the preset resistance value, the contact network is determined to be well grounded as a detection result; If the target resistance value is less than the preset resistance value, the contact network is determined to be poorly grounded as the detection result.

13. The grounding detection method according to claim 10, characterized in that: After determining whether the detection condition is met by the electrical test locking controller, the method further includes: The sensing component is monitored by the detection controller.

14. The grounding detection method according to claim 13, characterized in that: The monitoring of the sensing component by the detection controller includes: Determining whether a preset detection end condition is met, wherein the detection end condition is that a detection result is generated or the detection controller continuously drives the sensing component for a time period greater than a preset time period; If not, the sensing component continues to be monitored by the detection controller.

15. The grounding detection method according to claim 10, characterized in that: After determining whether the detection condition is met by the electrical test locking controller, the method further includes: If not, identify the abnormal factors that do not meet the detection conditions; Adjusting the abnormal factors until the electrical test lock controller determines that the detection conditions are met; Driving the sensing component to generate an induced current through the detection controller; A detection result is generated based on the induced current.

16. A grounding detection device, characterized in that: The visual grounding device according to any one of claims 1 to 8 comprises a test and lockout controller, a detection controller, and a sensing component, and the grounding detection device comprises: A judgment module, configured to, upon receiving a grounding detection instruction, determine whether a preset detection condition is met through the electrical detection locking controller; a driving module, configured to drive the sensing component to generate and collect the induced current through the detection controller if the conditions are met; A generating module is used to generate a detection result based on the induced current.

17. A computer-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by a processor, the grounding detection method according to any one of claims 10 to 15 is implemented.

Images