Cable fault simulation system

Abstract

The utility model provides a cable fault simulation system. The cable fault simulation system comprises a human-computer interface, a high-low voltage experiment switching module, a low-voltage pulse experiment control module, a high-voltage flashover experiment control module, a low-voltage simulation cable, a high-voltage simulation cable, a ball gap discharge box and an isolation module, the high-voltage simulation cable is provided with a first fault point and a second fault point, and the low-voltage simulation cable is provided with a third fault point; the human-computer interface is in electric signal connection with the low-voltage pulse experiment control module, the high-low voltage experiment switching module, the high-voltage flashover experiment control module and the isolation module. The high-low voltage experiment switching module is respectively in electric signal connection with the low-voltage pulse experiment control module and the high-voltage flashover experiment control module; the low-voltage pulse experiment control module is in electric signal connection with the low-voltage simulation cable; the high-voltage simulation cable is in electric signal connection with the high-voltage flashover experiment control module and the isolation module. According to the invention, the operation process of target fault setting is simplified.

Description

Technical Field

[0001] The present application relates to the technical field of power cable fault testing, and in particular to a cable fault simulation system. Background Art

[0002] With the development of urbanization over the years, the demand for power cables has increased due to their beautiful, stable and reliable features, but at the same time, the number of failures has begun to increase accordingly. Since power cables are generally buried underground, when a failure occurs, it is necessary to use a dedicated power cable fault tester to find the fault point of the power cable. However, since the detection process of power cables is relatively professional and complicated, maintenance personnel may have problems such as unskilled operation and lack of experience during emergency repairs, resulting in low maintenance efficiency or inability to find the fault point. Therefore, maintenance personnel are required to learn and master the relevant technologies of cable fault testers when there are no faults. There are some devices in the prior art that can simulate faults. By using the equipment that simulates faults, some possible faults of cables can be artificially simulated, which can provide certain training opportunities for inexperienced maintenance personnel.

[0003] However, the existing devices that can simulate cable faults have the problems of simple structure, low intelligence level, and fault simulation requiring manual setting of faults. Utility Model Content

[0004] The present application provides a cable fault simulation system to solve the technical problems in the above background.

[0005] The present application provides a cable fault simulation system, including: a human-machine interface, a high-low voltage experiment switching module, a low-voltage pulse experiment control module, a high-voltage flashover experiment control module, a low-voltage simulation cable, a high-voltage simulation cable, a ball gap discharge box and an isolation module; the high-voltage simulation cable is provided with a first fault point and a second fault point, and the low-voltage simulation cable is provided with a third fault point;

[0006] The human-machine interface is respectively connected with the low-voltage pulse experiment control module, the high-low voltage experiment switching module, the high-voltage flashover experiment control module, and the isolation module by electrical signals;

[0007] The high-low voltage experiment switching module is respectively connected with the low voltage pulse experiment control module and the high voltage flashover experiment control module by electrical signals;

[0008] The low-voltage pulse experiment control module is connected to the low-voltage simulation cable by electrical signals;

[0009] The high-voltage simulation cable is respectively connected to the high-voltage flashover experiment control module and the isolation module by electrical signals;

[0010] The ball gap discharge box, the isolation module and the high voltage simulation cable are connected.

[0011] Optionally, the human-machine interface includes: a touch screen and a main control board;

[0012] The touch screen is electrically connected to the main control board, and the main control board is also electrically connected to the low-voltage pulse experiment control module, the high-low voltage experiment switching module, the high-voltage flashover experiment control module, and the isolation module.

[0013] Optionally, the cable fault simulation system further comprises: a mobile terminal device, wherein the mobile terminal device is electrically connected to the human-machine interface.

[0014] Optionally, the high-voltage simulation cable comprises: a high-voltage shielding layer and a high-voltage wire core;

[0015] The first fault point and the second fault point are both set on the high-voltage line core. The first fault point is connected to the ball gap discharge box, the isolation module, and the high-voltage shielding layer through a first switch, and the second fault point is connected to the ball gap discharge box, the isolation module, and the high-voltage shielding layer through a second switch.

[0016] Optionally, the low-voltage analog cable comprises: a low-voltage shielding layer and a low-voltage wire core;

[0017] The third fault point is set on the low-voltage line core, and the third fault point is connected to the first end of the first resistor, the first input end of the third switch, the first end of the second resistor, and the first input end of the fourth switch. The second end of the first resistor is connected to the second input end of the third switch, the second end of the second resistor is connected to the second input end of the fourth switch, the first output end of the third switch is connected to the first output end of the fourth switch, and the second output end of the third switch is connected to the second output end of the fourth switch and then connected to the low-voltage shielding layer.

[0018] Optionally, the high-low voltage experiment switching module includes: a control circuit board, a motor, a first switching switch and a second switching switch;

[0019] The control circuit board is provided with a plurality of ports, which are electrically connected to the motor and the human-machine interface through the ports. The motor is connected to the first switching switch and the second switching switch. The first switching switch is connected to the high-voltage analog cable, and the second switching switch is connected to the low-voltage analog cable.

[0020] Optionally, the high-voltage flashover experiment control module comprises: a first single-chip computer, provided with a plurality of first wiring terminals and a plurality of first communication interfaces;

[0021] The multiple first wiring terminals are respectively connected to the high-voltage simulation cable, the first switch and the second switch by electrical signals, and the multiple first communication interfaces are respectively connected to the human-machine interface and the high- and low-voltage experiment switching module by electrical signals.

[0022] Optionally, the low-voltage pulse experiment control module includes: a second single-chip computer, provided with a plurality of second wiring terminals and a plurality of second communication interfaces;

[0023] The multiple second wiring terminals are electrically connected to the low-voltage simulation cable, the third switch, and the fourth switch, and the multiple second communication interfaces are electrically connected to the human-machine interface and the high- and low-voltage experiment switching module.

[0024] In this embodiment, the cable fault simulation system includes: a human-machine interface, a high-low voltage experiment switching module, a low-voltage pulse experiment control module, a high-voltage flashover experiment control module, a low-voltage simulation cable, a high-voltage simulation cable, a ball gap discharge box and an isolation module; the high-voltage simulation cable is provided with a first fault point and a second fault point, and the low-voltage simulation cable is provided with a third fault point; the human-machine interface is respectively connected to the low-voltage pulse experiment control module, the high-low voltage experiment switching module, the high-voltage flashover experiment control module, and the isolation module by electrical signals; the high-low voltage experiment switching module is respectively connected to the low-voltage pulse experiment control module and the high-voltage flashover experiment control module by electrical signals; the low-voltage pulse experiment control module is connected to the low-voltage simulation cable by electrical signals; the high-voltage simulation cable is respectively connected to the high-voltage flashover experiment control module and the isolation module by electrical signals. Compared with the prior art, the present application realizes operation on the human-machine interface by setting up a human-machine interface, a low-voltage pulse experiment control module, a high- and low-voltage experiment switching module, and a high-voltage flashover experiment control module. The function of automatically setting the target fault is realized through the high- and low-voltage experiment switching module, the low-voltage pulse experiment control module, and the high-voltage flashover experiment control module, which simplifies the operation process of setting the target fault and facilitates the training of staff in finding faults, thereby improving the staff's business capabilities and improving the efficiency of staff in actual troubleshooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the structure of a cable fault simulation system provided in one embodiment of the present application;

[0027] Figure 2A schematic diagram of a circuit connection for selecting a first fault point for a high-voltage flashover experiment control module provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of a circuit connection for selecting a second fault point for a high-voltage flashover experiment control module provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of a circuit connection for selecting a high-resistance fault in a low-voltage pulse experiment control module provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of a circuit connection for selecting a low-resistance fault for a low-voltage pulse experiment control module provided in an embodiment of the present application;

[0031] Figure 6 A schematic diagram of the connection between a first switch and a second switch provided in an embodiment of the present application.

[0032] In the figure: 1-human-machine interface; 2-high-low voltage experiment switching module; 3-low voltage pulse experiment control module; 4-high voltage flashover experiment control module; 5-low voltage simulation cable; 6-high voltage simulation cable; 7-ball gap discharge box; 8-isolation module; 9-mobile terminal equipment; 10-high voltage shielding layer; 11-high voltage core; 12-first fault point; 13-second fault point; 14-first switch; 15-second switch; 16-low voltage shielding layer; 17-low voltage core; 18-third fault point; 19-first resistor; 20-second resistor; 21-third switch; 22-fourth switch; 23-first switching switch; 24-second switching switch. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0034] Figure 1 A cable fault simulation system is shown according to an embodiment of the present application. Figure 1 As shown, combined Figure 2 and Figure 3 The system includes: a human-machine interface 1, a high-low voltage experiment switching module 2, a low-voltage pulse experiment control module 3, a high-voltage flashover experiment control module 4, a low-voltage simulation cable 5, a high-voltage simulation cable 6, a ball gap discharge box 7 and an isolation module 8;

[0035] A first fault point 12 and a second fault point 13 are provided on the high voltage simulation cable 6, and a third fault point 18 is provided on the low voltage simulation cable 5;

[0036] The human-machine interface 1 is respectively connected with the low-voltage pulse experiment control module 3, the high-low voltage experiment switching module 2, the high-voltage flashover experiment control module 4, and the isolation module 8 by electrical signals;

[0037] The high-low voltage experiment switching module 2 is respectively connected with the low voltage pulse experiment control module 3 and the high voltage flashover experiment control module 4 by electrical signals;

[0038] The low voltage pulse experiment control module 3 is connected to the low voltage simulation cable 5 by electrical signals;

[0039] The high voltage simulation cable 6 is electrically connected to the high voltage flashover experiment control module 4 and the isolation module 8 respectively;

[0040] The ball gap discharge box 7, the isolation module 8 and the high voltage simulation cable 6 are connected.

[0041] The human-machine interface 1 is provided with a plurality of ports, which are respectively connected with the low-voltage pulse experiment control module 3, the high-low voltage experiment switching module 2, the high-voltage flashover experiment control module 4, and the isolation module 8 by electrical signals.

[0042] Among them, the human-machine interface 1 is used for the staff to select whether to set the target fault on the low-voltage simulation cable 5 or the high-voltage simulation cable 6. Then, the human-machine interface 1 generates a first control instruction according to the staff's operation and sends the first control instruction to the high and low voltage experiment switching module 2.

[0043] Among them, the high-low voltage experiment switching module 2 selects the low-voltage pulse experiment control module 3 or the high-voltage flashover experiment control module 4 to set the target fault according to the received first control instruction, and sends the first feedback information to the human-machine interface 1, so that the human-machine interface 1 displays the operation interface for setting the target fault according to the first feedback information, so that the staff can set the target fault on the human-machine interface 1. Among them, the target fault includes a high-voltage sparking experiment at different fault locations on the high-voltage simulation cable 6 to train the staff to find different fault locations, and a fault simulation experiment on the low-voltage simulation cable 5 for different fault types to train the staff to find different fault types. Among them, the fault type can be a high-resistance fault and a low-resistance fault.

[0044] Among them, the low-voltage pulse experiment control module 3 is used to set the target fault at the third fault point 18 of the low-voltage simulation cable 5 according to the staff's operation on the operation interface, and send second feedback information to the human-machine interface 1 according to the setting progress of the target fault, so that the human-machine interface 1 confirms the setting progress of the corresponding target fault according to the second feedback information, and displays the next step operation interface for setting the target fault.

[0045] For the target fault set on the low-voltage simulation cable 5 , after the target fault is set, the low-voltage pulse experiment control module 3 sends the target fault status information to the human-machine interface 1 to monitor the status of the target fault.

[0046] The high-voltage flashover experiment control module 4 is used to perform a high-voltage sparking experiment on the ball gap discharge box 7 at the first fault point 12 or the second fault point 13 of the high-voltage simulation cable 6 according to the operation of the staff on the operation interface, so as to set the target fault, and send the third feedback information to the human-machine interface 1 according to the setting progress of the target fault, so that the human-machine interface 1 confirms the setting progress of the target fault according to the third feedback information, and displays the next operation interface for setting the target fault.

[0047] For the target fault set on the high-voltage simulation cable 6, during the ignition process of the ball gap discharge box 7, a large current is generated and converted into a low-voltage signal after passing through the isolation module 8. The isolation module 8 transmits the low-voltage signal to the human-machine interface 1. At this time, the human-machine interface 1 displays the high-voltage ignition experiment process and the experimental results of the high-voltage ignition experiment in an animated manner, that is, the target fault status information, to monitor the status of the target fault.

[0048] Among them, the first fault point 12 of the high-voltage simulation cable 6 is set at a position close to one end of the high-voltage simulation cable 6, for example, 50m away from one end of the high-voltage simulation cable 6, and the second fault point 13 is set at a position farther from the same end of the high-voltage simulation cable 6, for example, 250m away from the same end of the high-voltage simulation cable 6.

[0049] In addition, the total length of the low-voltage simulation cable 5 and the high-voltage simulation cable 6 is approximately 300 m.

[0050] Among them, a breakpoint is set on the high-voltage simulation cable 6, and two spherical electrodes are arranged inside the spherical gap discharge box 7, one of the spherical electrodes is connected to one end of the breakpoint on the high-voltage simulation cable 6, and the other spherical electrode is connected to the other end of the breakpoint on the high-voltage simulation cable 6.

[0051] The spherical gap discharge box 7 is a box with a discharge spherical gap with an adjustable gap distance and a visible window. Two spherical electrodes are arranged inside the spherical gap discharge box 7, which are connected to the high-voltage flashover experiment control module 4 through a high-voltage simulation cable 6, so that the high-voltage flashover experiment control module 4 controls the spherical gap discharge box 7 to perform the experiment. Furthermore, the surfaces of the two spherical electrodes are tin-plated to prevent the spherical electrodes from being oxidized at high temperature.

[0052] After receiving the high voltage signal generated by the ball gap discharge box 7, the isolation module 8 converts the high voltage signal into an optical signal, and then converts the optical signal into a low voltage signal, thereby converting the high voltage signal into a low voltage signal, thereby isolating the high voltage.

[0053] It should be noted that the specific structures of the ball gap discharge box 7 and the isolation module 8 can refer to the prior art and will not be described in detail here.

[0054] The usage process of the above cable fault simulation system is as follows:

[0055] When setting the target fault, the staff chooses on the human-machine interface 1 whether to set the target fault on the low-voltage simulation cable 5 or the high-voltage simulation cable 6. Then, the human-machine interface 1 generates a first control instruction according to the staff's operation and sends the first control instruction to the high- and low-voltage experiment switching module 2.

[0056] After the high-low voltage experiment switching module 2 receives the first control instruction, if the first control instruction indicates to set the target fault on the low-voltage simulation cable 5, the high-low voltage experiment switching module 2 selects the low-voltage pulse experiment control module 3 to set the target fault; if the first control instruction indicates to set the target fault on the high-voltage simulation cable 6, the high-low voltage experiment switching module 2 selects the high-voltage flashover experiment control module 4 to set the target fault.

[0057] Then, the high-low voltage experiment switching module 2 sends the first feedback information to the human-machine interface 1 , and the human-machine interface 1 displays the operation interface for setting the target fault according to the received first feedback information, and the staff sets the target fault on the human-machine interface 1 .

[0058] If the target fault is set through the low-voltage pulse experiment control module 3, the corresponding operation interface displays the options of high-resistance fault and low-resistance fault. The staff makes selections on the operation interface, and the human-machine interface 1 sends the staff's operation to the low-voltage pulse experiment control module 3, and displays the operation process for setting the target fault, as well as the operation options for the first step of setting the target fault.

[0059] The staff operates the operation options of the first step of setting the target fault, and the low-voltage pulse experiment control module 3 sets the target fault according to the staff's operation on the human-machine interface 1. After each step of setting is completed, the second feedback information is sent to the human-machine interface 1, so that the human-machine interface 1 confirms the setting progress of the corresponding target fault according to the second feedback information, and displays the next operation interface of setting the target fault, thereby guiding the staff to set the target fault.

[0060] After the target fault is set, the low-voltage pulse experiment control module 3 sends the target fault status information to the human-machine interface 1 to monitor the status of the target fault.

[0061] If the target fault is set through the high-voltage flashover experiment control module 4, the corresponding operation interface displays the options of the first fault point 12 and the second fault point 13. The staff makes selections on the operation interface, and the human-machine interface 1 sends the staff's operations to the high-voltage flashover experiment control module 4, and displays the operation process for setting the target fault, as well as the operation options for the first step of setting the target fault.

[0062] The staff operates the operation options of the first step of setting the target fault, and the high-voltage flashover experiment control module 4 sets the target fault according to the staff's operation on the human-machine interface 1. After each step of setting is completed, the third feedback information is sent to the human-machine interface 1, so that the human-machine interface 1 confirms the setting progress of the corresponding target fault according to the third feedback information, and displays the next operation interface of setting the target fault, thereby guiding the staff to set the target fault.

[0063] Among them, when the target fault is set by the high-voltage flashover experiment control module 4, that is, the ball gap discharge box 7 is controlled to perform a high-voltage ignition experiment for the first fault point 12 or the second fault point 13. During the ignition experiment, the ball gap discharge box 7 will generate a large current, and the large current will generate a corresponding high voltage. The isolation module 8 converts the high-voltage signal into an optical signal, and then converts the optical signal into a low-voltage signal, and then sends the low-voltage signal to the human-machine interface 1. At this time, the human-machine interface 1 displays the high-voltage ignition experiment process and the experimental results of the high-voltage ignition experiment, that is, the target fault status information, in an animated manner to monitor the status of the target fault.

[0064] In this embodiment, the cable fault simulation system includes: a human-machine interface 1, a high-low voltage experiment switching module 2, a low-voltage pulse experiment control module 3, a high-voltage flashover experiment control module 4, a low-voltage simulation cable 5, a high-voltage simulation cable 6, a ball gap discharge box 7 and an isolation module 8; a first fault point 12 and a second fault point 13 are arranged on the high-voltage simulation cable 6, and a third fault point 18 is arranged on the low-voltage simulation cable 5; the human-machine interface 1 is respectively connected to the low-voltage pulse experiment control module 3, the high-low voltage experiment switching module 2, the high-voltage flashover experiment control module 4, and the isolation module 8 by electrical signals; the high-low voltage experiment switching module 2 is respectively connected to the low-voltage pulse experiment control module 3 and the high-voltage flashover experiment control module 4 by electrical signals; the low-voltage pulse experiment control module 3 is connected to the low-voltage simulation cable 5 by electrical signals; the high-voltage simulation cable 6 is respectively connected to the high-voltage flashover experiment control module 4 and the isolation module 8 by electrical signals. Compared with the prior art, the present application realizes the function of automatically setting the target fault through the high and low voltage experiment switching module 2, the low voltage pulse experiment control module 3 and the high voltage flashover experiment control module 4 by setting a human-machine interface 1, a low voltage pulse experiment control module 3, a high voltage flashover experiment control module 4, simplifies the operation process of setting the target fault, and facilitates the training of the staff in finding faults, thereby improving the business ability of the staff and improving the efficiency of the staff in actually troubleshooting faults.

[0065] Optionally, the human-machine interface 1 includes: a touch screen and a main control board;

[0066] The touch screen is connected to the main control board via electrical signals, and the main control board is also connected to the low voltage pulse experiment control module 3, the high and low voltage experiment switching module 2, the high voltage flashover experiment control module 4, and the isolation module 8 via electrical signals.

[0067] Among them, the touch screen is connected to the main control board by electrical signals. The main control board is also provided with multiple ports, and the main control board is connected to the low-voltage pulse experiment control module 3, the high-low voltage experiment switching module 2, the high-voltage flashover experiment control module 4, and the isolation module 8 by electrical signals through the ports.

[0068] Among them, the main control board is connected to the touch screen electrical signal, and the main control board is used to send the staff's operations on the touch screen to the low-voltage pulse experiment control module 3, the high-low voltage experiment switching module 2 and the high-voltage flashover experiment control module 4.

[0069] The main control board is connected to the high and low voltage experiment switching module 2 through an electrical signal port, and is used to send the target fault setting of the staff on the touch screen to the high and low voltage experiment switching module 2, and receive the first feedback information sent by the high and low voltage experiment switching module 2.

[0070] The main control board is connected to the low-voltage pulse experiment control module 3 through an electrical signal port, and is used to send the target fault setting of the staff on the touch screen to the low-voltage pulse experiment control module 3, and receive the second feedback information and target fault status information sent by the low-voltage pulse experiment control module 3.

[0071] The main control board is connected to the high-voltage flashover experiment control module 4 through an electrical signal port, and is used to send the target fault setting of the staff on the touch screen to the high-voltage flashover experiment control module 4, and receive the third feedback information and target fault status information sent by the high-voltage flashover experiment control module 4.

[0072] The main control board is connected to the isolation module 8 via an electrical signal port, and is used to receive the low-voltage signal sent by the isolation module 8 .

[0073] The touch screen is used to display the target fault status information received by the main control board and the next operation interface.

[0074] Furthermore, the main ARM of the main control board adopts the STM32F103VCT6TR model, for example, and the display screen adopts a 10.4-inch LCD touch screen, the model of which is, for example, DMT80600L10.

[0075] Optionally, the cable fault simulation system further includes: a mobile terminal device 9 , which is electrically connected to the human-machine interface 1 .

[0076] Among them, the mobile terminal device 9 is used to remotely control the human-machine interface 1 to achieve remote setting of the target fault, and the mobile terminal device 9 can also receive and display the information received by the human-machine interface 1, including: first feedback information, second feedback information, third feedback information, and target fault status information.

[0077] The mobile terminal device 9 may be a smart device with Bluetooth function and capable of running on a 4G / 5G network / wifi network, such as a mobile phone, a tablet computer, etc., and the software application installation package corresponding to the system is installed on the smart device. Furthermore, the operating system of the software application installation package may be Android.

[0078] Optionally, the high-voltage simulation cable 6 includes: a high-voltage shielding layer 10 and a high-voltage wire core 11;

[0079] The first fault point 12 and the second fault point 13 are both set on the high-voltage line core 11. The first fault point 12 is connected to the ball gap discharge box 7, the isolation module 8, and the high-voltage shielding layer 10 through the first switch 14. The second fault point 13 is connected to the ball gap discharge box 7, the isolation module 8, and the high-voltage shielding layer 10 through the second switch 15.

[0080] The staff selects the first fault point 12 or the second fault point 13 as the target fault on the touch screen.

[0081] If the first fault point 12 is selected, the staff closes the first switch 14 through the human-machine interface 1, so that the high-voltage flashover experiment control module 4 controls the first switch 14 to close. After the first switch 14 is closed, Figure 2 As shown in the circuit diagram, the high-voltage line core 11, the first fault point 12, the first switch 14, the ball gap discharge box 7, the isolation module 8, and the high-voltage shielding layer 10 form a closed loop to complete the setting of the target fault at the location of the first fault point 12.

[0082] Then, the ball gap discharge box 7 starts to perform a high voltage ignition experiment, and the isolation module 8 converts the high voltage signal of the high voltage ignition experiment into a low voltage signal, and sends the low voltage signal, ie, target fault state information, to the human-machine interface 1 .

[0083] If the second fault point 13 is selected, the staff closes the second switch 15 on the human-machine interface 1, so that the high-voltage flashover experiment control module 4 controls the second switch 15 to close. After the second switch 15 is closed, Figure 3 As shown in the circuit diagram, the high-voltage line core 11, the second fault point 13, the second switch 15, the ball gap discharge box 7, the isolation module 8, and the high-voltage shielding layer 10 form a closed loop to complete the setting of the target fault at the location of the second fault point 13.

[0084] Then, the ball gap discharge box 7 starts to perform a high voltage ignition experiment, and the isolation module 8 converts the high voltage signal of the high voltage ignition experiment into a low voltage signal, and sends the low voltage signal, ie, target fault state information, to the human-machine interface 1 .

[0085] In addition, only one of the first fault point 12 and the second fault point 13 is selected as the fault point of this experiment during each experiment, and the first switch 14 and the second switch 15 cannot be closed at the same time.

[0086] Optionally, the low-voltage analog cable 5 includes: a low-voltage shielding layer 16 and a low-voltage wire core 17;

[0087] The third fault point 18 is set on the low-voltage line core 17. The third fault point 18 is connected to the first end of the first resistor 19, the first input end of the third switch 21, the first end of the second resistor 20, and the first input end of the fourth switch 22. The second end of the first resistor 19 is connected to the second input end of the third switch 21, the second end of the second resistor 20 is connected to the second input end of the fourth switch 22, the first output end of the third switch 21 is connected to the first output end of the fourth switch 22, and the second output end of the third switch 21 is connected to the second output end of the fourth switch 22 and then connected to the low-voltage shielding layer 16.

[0088] The resistance of the first resistor 19 is greater than the resistance of the second resistor 20 , the fault type corresponding to the first resistor 19 is a high-resistance fault, and the fault type corresponding to the second resistor 20 is a low-resistance fault.

[0089] The resistance of the first resistor 19 is greater than the resistance of the second resistor 20 , the fault type corresponding to the first resistor 19 is a high-resistance fault, and the fault type corresponding to the second resistor 20 is a low-resistance fault.

[0090] If a high resistance fault is selected, the staff closes the third switch 21 on the human-machine interface 1, so that the low-voltage pulse experiment control module 3 controls the third switch 21 to close. After the third switch 21 is closed, Figure 4 As shown in the circuit diagram, the low-voltage line core 17, the third fault point 18, the first resistor 19, the third switch 21 and the low-voltage shielding layer 16 form a closed loop to complete the setting of the high-resistance fault.

[0091] Then, the low-voltage pulse experiment control module 3 sends the target fault status information to the main control board.

[0092] If a low resistance fault is selected, the staff closes the fourth switch 22 through the human-machine interface 1, so that the fourth switch 22 controlled by the low voltage pulse experiment control module 3 is closed. After the fourth switch 22 is closed, Figure 5 As shown in the circuit diagram, the low-voltage line core 17, the third fault point 18, the second resistor 20, the fourth switch 22 and the low-voltage shielding layer 16 form a closed loop to complete the setting of the low-resistance fault.

[0093] Similarly, the third switch 21 is composed of two switches connected in parallel and closed and opened synchronously, and the first resistor 19 is set between the two switches connected in series. Similarly, the fourth switch 22 is composed of two switches connected in parallel and closed and opened synchronously, and the second resistor 20 is set between the two switches connected in series.

[0094] Alternatively, if Figure 6 As shown, the high and low voltage experiment switching module 2 includes: a control circuit board, a motor, a first switching switch 23 and a second switching switch 24;

[0095] The control circuit board is provided with multiple ports, which are electrically connected to the motor and the human-machine interface 1 through the ports. The motor is connected to the first switching switch 23 and the second switching switch 24. The first switching switch 23 is connected to the high-voltage analog cable 6, and the second switching switch 24 is connected to the low-voltage analog cable 5.

[0096] When the staff selects the first switching switch 23 to be closed on the touch screen, it means that the target fault is set through the high-voltage flashover experiment control module 4, the main control board sends an electrical signal to the control circuit board, the control circuit board controls the motor to start, and then controls the first switching switch 23 to be closed by controlling the motor. After the first switching switch 23 is closed, the target fault is selected to set the target fault on the high-voltage simulation cable 6, that is, the high-voltage flashover experiment control module 4 is selected, the high-voltage flashover experiment control module 4 receives the electrical signal sent by the high- and low-voltage experiment switching module 2, and at the same time, the high-voltage flashover experiment control module 4 sends the first feedback information to the main control board.

[0097] When the staff selects the second switching switch 24 to be closed on the touch screen, it means that the target fault is set through the low-voltage pulse experiment control module 3, the main control board sends an electrical signal to the control circuit board, the control circuit board controls the motor to start, and thus controls the second switching switch 24 to be closed by controlling the motor. After the second switching switch 24 is closed, the target fault is selected on the low-voltage simulation cable 5, that is, the low-voltage pulse experiment control module 3 is selected, the low-voltage pulse experiment control module 3 receives the electrical signal sent by the high-low voltage experiment switching module 2, and at the same time the low-voltage pulse experiment control module 3 sends the second feedback information to the main control board.

[0098] In addition, the first switch 23 and the second switch 24 cannot be closed at the same time.

[0099] The control circuit board model may be, for example, STC15W4K32S4, and the motor may be a DC debugging motor with a model of 5840-31ZY-CE and a parameter of 24V50RPM.

[0100] Optionally, the high-voltage flashover experiment control module 4 includes: a first single-chip computer, provided with a plurality of first wiring terminals and a plurality of first communication interfaces;

[0101] The plurality of first wiring terminals are respectively connected to the high voltage simulation cable 6 , the first switch 14 and the second switch 15 by electrical signals, and the plurality of first communication interfaces are respectively connected to the human-machine interface 1 and the high and low voltage experiment switching module 2 by electrical signals.

[0102] Among them, the first single-chip microcomputer is used for information processing and output, such as receiving information received by the first terminal or the first communication interface. Specifically, it includes sending information to the high-voltage analog cable 6 through the first terminal connected to the high-voltage analog cable 6, and sending information to the human-machine interface 1 through the first communication interface.

[0103] When the staff selects the first switching switch 23 to be closed on the touch screen, it means that the target fault is set through the high-voltage flashover experiment control module 4, the main control board sends an electrical signal to the control circuit board, the control circuit board controls the motor to start, and then controls the first switching switch 23 to be closed by controlling the motor. After the first switching switch 23 is closed, the target fault is selected to set the target fault on the high-voltage simulation cable 6, that is, the high-voltage flashover experiment control module 4 is selected, and the first communication interface connected to the high and low voltage experiment switching module 2 receives the electrical signal sent by the control circuit board, and at the same time, the first single-chip microcomputer sends the first feedback information to the main control board through the first communication interface.

[0104] When the staff selects the first switch 14 to be closed on the touch screen, it means that the first fault point 12 is selected to set the target fault. The main control board sends an electrical signal to the first communication interface of the first single-chip microcomputer. After the first communication interface connected to the main control board receives the electrical signal sent by the main control board, the first single-chip microcomputer controls the first switch 14 to be closed through the first terminal connected to the first switch 14, and controls the first terminal connected to the high-voltage analog cable 6 to send an electrical signal to the high-voltage analog cable 6.

[0105] When the staff selects the second switch 15 to be closed on the touch screen, it means that the second fault point 13 is selected to set the target fault. The main control board sends an electrical signal to the first communication interface of the first single-chip microcomputer. After the first communication interface connected to the main control board receives the received electrical signal sent by the main control board, the first single-chip microcomputer controls the second switch 15 to be closed through the first terminal connected to the second switch 15, and controls the first terminal connected to the high-voltage analog cable 6 to send an electrical signal to the high-voltage analog cable 6.

[0106] Among them, the first single-chip microcomputer model is, for example, STC15W4K32S4.

[0107] Optionally, the low-voltage pulse experiment control module 3 includes: a second single-chip microcomputer, provided with a plurality of second wiring terminals and a plurality of second communication interfaces.

[0108] The plurality of second wiring terminals are electrically connected to the low voltage simulation cable 5 , the third switch 21 , and the fourth switch 22 , and the plurality of second communication interfaces are electrically connected to the human-machine interface 1 and the high and low voltage experiment switching module 2 .

[0109] Among them, the second single-chip microcomputer is used for information processing and output, such as information received by the second receiving terminal or the second communication interface. Specifically, it includes sending information to the low-voltage analog cable 5 through the second terminal connected to the low-voltage analog cable 5, and sending information to the human-machine interface 1 through the second communication interface.

[0110] When the staff selects the second switching switch 24 to be closed on the touch screen, it means that the target fault is set through the low-voltage pulse experiment control module 3, the main control board sends an electrical signal to the control circuit board, the control circuit board controls the motor to start, and thus controls the second switching switch 24 to be closed by controlling the motor. After the second switching switch 24 is closed, the target fault is selected on the low-voltage simulation cable 5, that is, the low-voltage pulse experiment control module 3 is selected, and the second communication interface connected to the high and low voltage experiment switching module 2 receives the electrical signal sent by the control circuit board, and at the same time, the second single-chip computer sends the second feedback information to the main control board through the second communication interface.

[0111] When the staff selects the third switch 21 to be closed on the touch screen, it means that a high-resistance fault is selected to set the target fault. The main control board sends an electrical signal to the second communication interface of the second single-chip microcomputer. After the second communication interface connected to the main control board receives the received electrical signal sent by the main control board, the second single-chip microcomputer controls the third switch 21 to be closed through the second terminal connected to the third switch 21, and controls the second terminal connected to the low-voltage pulse experiment control module 3 to send an electrical signal to the low-voltage simulation cable 5.

[0112] When the staff selects the fourth switch 22 to be closed on the touch screen, it means that the low-resistance fault setting target fault is selected. The main control board sends an electrical signal to the second communication interface of the second single-chip microcomputer. After the second communication interface connected to the main control board receives the receiving electrical signal sent by the main control board, the second single-chip microcomputer controls the fourth switch 22 to be closed through the second terminal connected to the fourth switch 22, and controls the second terminal connected to the low-voltage pulse experiment control module 3 to send an electrical signal to the low-voltage simulation cable 5.

[0113] The second single-chip microcomputer model is, for example, STC15W4K32S4.

[0114] Finally, it should be noted that all contents not described in the technical solution of this application can be implemented using existing technologies. In addition, the above embodiments are only used to illustrate the technical solution of this application, rather than to limit it; although the application is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cable fault simulation system, It is characterized in that include: Human-machine interface, high-low voltage experiment switching module, low-voltage pulse experiment control module, high-voltage flashover experiment control module, low-voltage simulation cable, high-voltage simulation cable, ball gap discharge box and isolation module; the high-voltage simulation cable is provided with a first fault point and a second fault point, and the low-voltage simulation cable is provided with a third fault point; The human-machine interface is respectively connected with the low-voltage pulse experiment control module, the high-low voltage experiment switching module, the high-voltage flashover experiment control module, and the isolation module by electrical signals; The high-low voltage experiment switching module is respectively connected with the low voltage pulse experiment control module and the high voltage flashover experiment control module by electrical signals; The low-voltage pulse experiment control module is connected to the low-voltage simulation cable by electrical signals; The high-voltage simulation cable is respectively connected to the high-voltage flashover experiment control module and the isolation module by electrical signals; The ball gap discharge box, the isolation module and the high voltage simulation cable are connected.

2. The cable fault simulation system according to claim 1, It is characterized in that The human-machine interface includes: a touch screen and a main control panel; The touch screen is electrically connected to the main control board, and the main control board is also electrically connected to the low-voltage pulse experiment control module, the high-low voltage experiment switching module, the high-voltage flashover experiment control module, and the isolation module.

3. The cable fault simulation system according to claim 1, It is characterized in that Also includes: A mobile terminal device is electrically connected to the human-machine interface.

4. The cable fault simulation system according to claim 1, It is characterized in that The high-voltage simulation cable comprises: a high-voltage shielding layer and a high-voltage wire core; The first fault point and the second fault point are both set on the high-voltage line core. The first fault point is connected to the ball gap discharge box, the isolation module, and the high-voltage shielding layer through a first switch, and the second fault point is connected to the ball gap discharge box, the isolation module, and the high-voltage shielding layer through a second switch.

5. The cable fault simulation system according to claim 1, It is characterized in that The low-voltage analog cable comprises: a low-voltage shielding layer and a low-voltage wire core; The third fault point is set on the low-voltage line core, and the third fault point is connected to the first end of the first resistor, the first input end of the third switch, the first end of the second resistor, and the first input end of the fourth switch. The second end of the first resistor is connected to the second input end of the third switch, the second end of the second resistor is connected to the second input end of the fourth switch, the first output end of the third switch is connected to the first output end of the fourth switch, and the second output end of the third switch is connected to the second output end of the fourth switch and then connected to the low-voltage shielding layer.

6. The cable fault simulation system according to any one of claims 1 to 5, It is characterized in that The high and low voltage experiment switching module comprises: a control circuit board, a motor, a first switching switch and a second switching switch; The control circuit board is provided with a plurality of ports, which are electrically connected to the motor and the human-machine interface through the ports. The motor is connected to the first switching switch and the second switching switch. The first switching switch is connected to the high-voltage analog cable, and the second switching switch is connected to the low-voltage analog cable.

7. The cable fault simulation system according to claim 4, It is characterized in that The high-voltage flashover experiment control module comprises: a first single-chip computer, provided with a plurality of first wiring terminals and a plurality of first communication interfaces; The multiple first wiring terminals are respectively connected to the high-voltage simulation cable, the first switch and the second switch by electrical signals, and the multiple first communication interfaces are respectively connected to the human-machine interface and the high- and low-voltage experiment switching module by electrical signals.

8. The cable fault simulation system according to claim 5, It is characterized in that The low-voltage pulse experiment control module includes: a second single-chip computer, provided with a plurality of second wiring terminals and a plurality of second communication interfaces; The multiple second wiring terminals are electrically connected to the low-voltage simulation cable, the third switch, and the fourth switch, and the multiple second communication interfaces are electrically connected to the human-machine interface and the high- and low-voltage experiment switching module.

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