Network topology-based mine power distribution network anti-bypass tripping method, device and medium

Abstract

The present application relates to power distribution automation technical field, especially to a kind of network topology-based mine power distribution network anti-bypass tripping method comprising the following steps: mine power distribution network includes several switch devices, each switch device includes switch module, adjacent switch device is connected based on electrical topology structure through switch module;Start each switch device, obtain the address information of each port of switch module, form information table, process the information in information table, generate network topology graph using network topology generation algorithm, and describe electrical topology structure through network topology graph;When switch device detects fault, the switch device of fault broadcasts fault information to the whole network, based on network topology graph, the position of the switch device of current fault is analyzed, the switch device associated with the switch device of current fault is obtained, the fault information is processed, and anti-bypass tripping is realized.The implementation step is simple, wiring error can be avoided, the cost is low, the applicability is high, and the safety of underground operation is improved.

Description

Technical Field

[0001] This invention relates to the field of power distribution automation technology, and in particular to a method, device and medium for preventing cascading tripping in mining power distribution networks based on network topology. Background Technology

[0002] Most coal mines in my country are underground mines. The power supply system in a coal mine, from top to bottom, consists of a surface substation, an underground central substation, a mining area substation, and a mobile substation. The surface substation (6KV / 10KV) is the central hub for power supply to the entire mine, responsible for power reception, transformation, and distribution. The underground central substation is the core underground substation, responsible for supplying power to the mining area substation, rectifier substation, main drainage pump, and loads near the mine's bottom yard. The mining area substation is the center for transformation and distribution within the mining area, responsible for supplying power to the mining area load and roadway excavation load. Mobile substations are suitable for use in coal mines and other environments containing gas; their function is to supply power to the integrated mechanized mining switchgear in coal mines.

[0003] The underground environment in coal mines is relatively harsh. The confined space and humid air place increasingly stringent safety requirements on coal mine power supply systems. Unauthorized tripping of the underground power grid can disrupt power supply to the mine, easily leading to gas accumulation and potentially gas explosions, seriously endangering the lives of miners. Existing methods for preventing unauthorized tripping generally have certain problems in practical applications, affecting reliable power supply and safe production in mines. These problems mainly include:

[0004] (1) It is necessary to connect all the underground hardware switching devices according to the designed electrical distribution requirements. First, all the underground switching devices are numbered and classified by type. Second, the ports of all the underground switches are classified. Third, the corresponding switch ports are connected according to the pre-defined numbers and types. After the connection is completed, the attributes of each switching device and the parameter information of the switch ports connected to the switching devices are bound. This method involves on-site installation and connection according to electrical distribution requirements. The steps are cumbersome, the cycle is long, the difficulty is high, wiring errors are easy to occur, the cost is high, and the safety is low.

[0005] (2) The electrical topology diagram cannot be updated in real time, and the parameters need to be re-bound when replacing the switch device, which is not very applicable. Summary of the Invention

[0006] The technical problem to be solved by this invention is that, in order to overcome the technical problems of existing technical methods, such as cumbersome implementation steps, long cycle, high difficulty, easy wiring errors, high cost, low security and low applicability, this invention provides a method for preventing cascading tripping in mining power distribution networks based on network topology. The implementation steps are simple, can avoid wiring errors, have low cost, high applicability, and improve the safety of underground operations.

[0007] The technical solution adopted by this invention to solve its technical problem is: a method for preventing cascading tripping in mining power distribution networks based on network topology, comprising the following steps:

[0008] S1, Electrical connection: The mining power distribution network includes several switching devices, each of which includes a switch module. Based on the electrical topology, adjacent switching devices are connected through the switch modules; wherein, the switch module has at least four ports.

[0009] S2, Network topology generation: Activate each of the switching devices, obtain the IP address and MAC address of each port of the switch module, form an information table, process the information in the information table, generate a network topology diagram using a network topology generation algorithm, and describe the electrical topology structure through the network topology diagram;

[0010] S3, Implementation of the anti-cascading tripping function: When the switching device detects a fault, the faulty switching device broadcasts the fault information to the entire network. Based on the network topology map, the location of the currently faulty switching device is analyzed to obtain the switching devices associated with the currently faulty switching device. The fault information is then processed to achieve anti-cascading tripping.

[0011] Furthermore, specifically, each of the switching devices also includes a central processing unit and a detection module, both of which are connected to the central processing unit.

[0012] Furthermore, specifically, step S2 includes the following steps:

[0013] S21, Start each of the switching devices and initialize each of the switching devices;

[0014] S22, the central processing unit reads the IP address and MAC address of each port of the switch module, and broadcasts the IP address and MAC address to the entire network in port-based organization;

[0015] S23, the switching device receives the IP address and MAC address of the broadcast transmission, forms an information table, processes the information in the information table, and uses a network topology generation algorithm to construct a sub-topology map with the current switching device as the branch;

[0016] S24, integrate all the sub-topology graphs to obtain the network topology graph.

[0017] Furthermore, specifically, step S3 includes the following steps:

[0018] S31, when the detection module of the switching device detects a fault, the central processing unit obtains the fault information, converts the fault information into JSON data and transmits it to the switch module, and broadcasts the JSON data to the entire network through the port of the switch module;

[0019] S32, the switch device in normal state receives the JSON data, analyzes the JSON data in conjunction with the network topology diagram, and parses the location of the currently faulty switch device on the network topology diagram;

[0020] S33, Calculate the associated switching devices based on the location of the currently faulty switching device on the network topology diagram;

[0021] S34 If the faulty switchgear trips in time within the preset time, the tracking of the associated switchgear is released; otherwise, if the faulty switchgear fails to trip in time within the preset time, the associated switchgear is controlled to trip, thus preventing cascading tripping.

[0022] Furthermore, specifically, the ports connecting the switching device and adjacent switching devices are determined based on the upper, lower, left, and right signal flow directions of the electrical topology.

[0023] Furthermore, specifically, the four ports are a first port, a second port, a third port, and a fourth port. The first port is used to connect to the upstream switch device, and the second, third, and fourth ports are used to connect to the downstream switch device. The downstream switch device includes the downstream switch device, the switch device on the left side, and the switch device on the right side.

[0024] Furthermore, specifically, the second port is used to connect to the switch device located downstream, the third port is used to connect to the switch device located on the left side, and the fourth port is used to connect to the switch device located on the right side.

[0025] Furthermore, specifically, the central processing unit periodically reads the IP address and MAC address of each port of the switch module, as well as the fault information detected by the detection module; the fault information includes the IP address and MAC address, switch status, and fault cause.

[0026] A computer device, comprising:

[0027] processor;

[0028] Memory, used to store executable instructions;

[0029] The processor is used to read the executable instructions from the memory and execute the executable instructions to implement the above-described method for preventing cascading tripping in mining power distribution networks based on network topology.

[0030] A computer-readable storage medium storing a computer program that, when executed by a processor, causes the processor to implement the network topology-based anti-over-tripping method for mining power distribution networks as described above.

[0031] The beneficial effects of this invention are that it provides a network topology-based method for preventing cascading tripping in mining power distribution networks. This method describes the electrical topology using a network topology diagram, resulting in simple implementation steps, avoiding wiring errors, low cost, high applicability, and improved safety in underground operations. Furthermore, it can automatically detect faults, calculate associated switching devices based on the network topology diagram, and selectively prevent cascading tripping based on the current state of the faulty switching device, thereby minimizing the area affected by power outages. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is a schematic diagram of the power supply line structure of the mining power distribution network in Embodiment 1 of the present invention.

[0034] Figure 2 This is a schematic diagram of the method flow in Embodiment 1 of the present invention.

[0035] Figure 3 This is a network topology diagram of the part of the network where the interconnecting switch is not in use in Embodiment 1 of the present invention.

[0036] Figure 4 This is a network topology diagram of the part of the interconnection switch that is put into use in Embodiment 1 of the present invention.

[0037] Figure 5 This is a schematic diagram of the computer device structure according to Embodiment 2 of the present invention.

[0038] In the diagram, 10 is a computer device; 1002 is a processor; 1004 is a memory; and 1006 is a transmission device. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0040] Example 1

[0041] This application provides a method for preventing cascading trips in mining power distribution networks based on network topology, thereby avoiding cascading trips and improving the safety of coal mine power supply systems. The following is a detailed description.

[0042] like Figure 1 As shown, the power supply lines of the mine power distribution network are divided into surface and underground sections, forming a tree-like structure from top to bottom. In a specific application scenario, from surface to underground, these can include: a surface substation, an underground central substation, a mining area substation, and a mobile substation. The mining area substation and mobile substation can include multiple levels, such as from level 1 to level N. The power supply lines branch continuously from top to bottom, forming multiple paths. For simplicity, this embodiment only uses one path as an example to illustrate the scheme.

[0043] like Figure 2 As shown, the method for preventing cascading tripping in mining power distribution networks based on network topology specifically includes the following steps:

[0044] S1, Electrical Connection: The mining power distribution network includes several switching devices, each of which includes a switch module. Based on the electrical topology, adjacent switching devices are connected through the switch module; wherein, the switch module has at least four ports.

[0045] In this example, the ports connecting the switching devices to adjacent switching devices are determined based on the signal flow directions (up, down, left, and right) of the electrical topology (electrical wiring diagram). This facilitates rapid connection of adjacent switching devices and the construction of the network topology, thereby reducing the difficulty of electrical connections and improving equipment maintenance efficiency. Furthermore, the four ports are designated as port 1, port 2, port 3, and port 4. Port 1 connects to the upstream switching device, while ports 2, 3, and 4 connect to downstream switching devices. These downstream switching devices include those located downstream, on the left, and on the right. Preferably, port 2 connects to the downstream switching device, port 3 connects to the left-side switching device, and port 4 connects to the right-side switching device.

[0046] For details, please refer to Figure 3Because the "Coal Mine Safety Regulations" require underground power supply networks to adopt a dual-circuit power supply method, taking the underground central substation as an example, the two circuits of the underground central substation are the A-line circuit and the B-line circuit. The two circuits are backups for each other. That is, if one circuit power supply or line (such as line A) fails, the normal power supply of the other circuit (such as line B) can be connected by adjusting the No. 3 tie switch, ensuring the continuous power supply to the load. Both the A-line circuit and the B-line circuit are equipped with multiple switching devices. The structure and connection relationship of the A-line circuit and the B-line circuit are the same. The multiple switching devices are the No. 1 main control switch and at least one No. 2 high-voltage switch (the switching device set in the downstream). The second port of the No. 1 main control switch is connected to the first port of the No. 2 high-voltage switch and the first port of the No. 3 tie switch. The third port of the No. 3 tie switch is connected to the fourth port of the No. 2 high-voltage switch. Since the underground central substation supplies power to the mining area substation, the mining area substation is equipped with multiple switching devices, namely No. 4 relocation switch, No. 5 low-voltage switch, No. 6 low-voltage switch and No. 7 low-voltage switch. The second port of No. 2 high-voltage switch is connected to the first port of No. 4 relocation switch, and the second port of No. 4 relocation switch is connected to the first port of No. 5 low-voltage switch, No. 6 low-voltage switch and No. 7 low-voltage switch respectively.

[0047] S2, Network Topology Generation: Each switching device is activated to obtain the IP address and MAC address of each port on the switch module, forming an information table. The information in the table is processed, and a network topology diagram is generated using a network topology generation algorithm. This diagram describes the electrical topology. When the tie switch is not in use, the electrical topology and network topology diagram are as follows: Figure 3 As shown; when the tie switch is in use, the electrical topology and network topology diagram are as follows. Figure 4 As shown.

[0048] In this embodiment, step S2 specifically includes the following steps:

[0049] S21, Start each switching device and initialize each switching device.

[0050] S22, the central processing unit reads the IP address and MAC address of each port of the switch module, and broadcasts the IP address and MAC address to the whole network in port order.

[0051] S23, the switching device receives the IP address and MAC address of the broadcast transmission, forms an information table, processes the information in the information table, and uses a network topology generation algorithm to construct a sub-topology map with the current switching device as the branch.

[0052] It should be noted that, due to the characteristics of switches, adjacent switching devices connected to each port of the switch will inevitably exchange IP addresses and MAC addresses. Figure 3To further illustrate, consider the following example: The second port of switch #4 must contain the IP addresses and MAC addresses broadcast from low-voltage switches #5, #6, and #7. Switch #4 receives these broadcast addresses and constructs a first information table. Switch #4 processes the information in the first information table and uses a network topology generation algorithm to construct a first sub-topology with switch #4 as a branch. Similarly, the second port of high-voltage switch #2 must contain the IP addresses and MAC addresses of switches #4, #5, #6, and #7. High-voltage switch #2 constructs a second information table based on all received IP and MAC addresses. When switch #4 sends a message to high-voltage switch #2, the message includes the IP address, MAC address, and the first information table. High-voltage switch #2 processes the information in the second information table in conjunction with the message sent by switch #4, establishes a hierarchical relationship, and uses a network topology generation algorithm to construct a second sub-topology with high-voltage switch #2 as a branch. The second sub-topology includes the first sub-topology. When line A fails and tie switch #3 is activated, the third port at tie switch #3 will contain the IP addresses and MAC addresses of high-voltage switch #2, tie switch #3, transformer switch #4, low-voltage switch #5, low-voltage switch #6, and low-voltage switch #7. The sub-topology construction process is as described above and will not be repeated here for the sake of brevity. The final sub-topology is constructed with tie switch #3 as the branch. In this embodiment, the upstream switch has a larger information table capacity. The information formed by the most upstream switch contains the IP addresses and MAC addresses of all switch devices, as well as the corresponding information tables of downstream switch devices.

[0053] S24, integrate all sub-topology graphs to obtain the network topology graph.

[0054] In this embodiment, the switching device periodically reads the IP addresses and MAC addresses transmitted from each port and broadcasts them across the network. If an upstream switching device receives the broadcast IP addresses and MAC addresses, it marks the sender as the switching device broadcasting to the entire network. The upstream switching device then searches its information table. If the search is successful, it further searches the sender's message, which includes the IP address and MAC address as well as the information table constructed by the sender. All mapping relationships appearing in the messages in the information table are grouped into a subset of the sender's information, establishing a hierarchical relationship, and finally obtaining a complete network topology map.

[0055] S3, the implementation of the anti-cascading tripping function: when the switching device detects a fault, the faulty switching device broadcasts the fault information to the entire network. Based on the network topology map, the location of the currently faulty switching device is analyzed, the switching devices associated with the currently faulty switching device are obtained, the fault information is processed, and the anti-cascading tripping function is realized.

[0056] In this embodiment, step S3 specifically includes the following steps:

[0057] S31, when the detection module of the switching device detects a fault, the central processing unit obtains the fault information, converts the fault information into JSON data and transmits it to the switch module, and broadcasts the JSON data to the entire network through the port of the switch module;

[0058] S32, the switch device in normal state receives JSON data, analyzes the JSON data in conjunction with the network topology diagram, and parses the location of the currently faulty switch device on the network topology diagram;

[0059] S33, Calculate the associated switching devices based on the location of the currently faulty switching device on the network topology diagram;

[0060] S34 If the faulty switchgear trips in time within the preset time, the tracking of the associated switchgear is released; otherwise, if the faulty switchgear fails to trip in time within the preset time, the associated switchgear is controlled to trip, thus preventing cascading tripping.

[0061] In this embodiment, if high-voltage switch #2 fails, it broadcasts the fault information across the entire network. If tie switch #3 is not in use, both main control switch #1 and transformer switch #4 receive the broadcast fault information. The sender is identified as high-voltage switch #2 based on its IP and MAC addresses. The sender's position on the network topology is located, and the correlation is calculated to identify devices with strong correlation, typically the direct superior (main control switch #1). Main control switch #1 tracks the fault information in real time and determines whether high-voltage switch #2 is in a tripped state. If high-voltage switch #2 trips within a preset time, the correlation is broken; otherwise, main control switch #1 will perform the tripping action when the preset time arrives, thus preventing cascading tripping and accurately controlling the outage area. This method requires no manual intervention, has a high degree of automation, is convenient for engineering implementation, and has certain promotional and application value.

[0062] It should be noted that JSON (JavaScript Object Notation) is a lightweight data exchange format that is easy for humans to read and write, as well as easy for machines to parse and generate, effectively improving network transmission efficiency.

[0063] In this embodiment, the central processing unit (CPU) periodically reads the IP address and MAC address of each port of the switch module, as well as the fault information detected by the detection module. The fault information includes the IP address and MAC address, the switch status, and the cause of the fault. The switch status includes open and closed states. The cause of the fault includes power failure of the switch device or communication abnormality. The CPU periodically acquires information and updates it in a timely manner.

[0064] In summary, the network topology-based anti-cascading tripping method for mining power distribution networks of the present invention describes the electrical topology using a network topology diagram, resulting in simple implementation steps, avoiding wiring errors, low cost, high applicability, and improved safety in underground operations. Furthermore, it can automatically detect faults, calculate associated switching devices based on the network topology diagram, and selectively prevent cascading tripping based on the current state of the faulty switching device, thereby minimizing the area affected by power outages.

[0065] Example 2

[0066] This application provides a computer device including a processor and a memory. The memory stores at least one instruction or at least one program. The at least one instruction or at least one program is loaded and executed by the processor to implement a network topology-based method for preventing cascading tripping in mining power distribution networks, as provided in the above method embodiments.

[0067] Figure 5 This diagram illustrates a hardware structure of a switching device for implementing a network topology-based anti-over-tripping method for mining power distribution networks provided in this application embodiment. The switching device may participate in or include the apparatus or system provided in this application embodiment. Figure 5 As shown, the computer device 10 may include one or more processors 1002 (the processor may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.), a memory 1004 for storing data, and a transmission device 1006 for communication functions. In addition, it may also include: a display switch device, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 5 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, computer device 10 may also include... Figure 5 The more or fewer components shown, or having the same Figure 5 The different configurations shown.

[0068] It should be noted that the aforementioned one or more processors and / or other data processing circuits are generally referred to herein as "data processing circuits". These data processing circuits may be embodied, in whole or in part, in software, hardware, firmware, or any other combination thereof. Furthermore, the data processing circuit may be a single, independent processing module, or may be integrated, in whole or in part, into any other element within the computer device 10 (or mobile switching device). As involved in the embodiments of this application, the data processing circuit serves as a processor control mechanism (e.g., selection of a variable resistor termination path connected to an interface).

[0069] The memory 1004 can be used to store software programs and modules for application software, such as the program instruction / data storage device corresponding to a network topology-based anti-over-tripping method for mining power distribution networks in this embodiment of the application. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 1004, thereby implementing the aforementioned method. The memory 1004 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 1004 may further include memory remotely located relative to the processor, and these remote memories can be connected to the computer device 10 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0070] The transmission device 1006 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the computer device 10. In one example, the transmission device 1006 includes a Network Interface Controller (NIC), which can be connected to other network switching devices via a base station to communicate with the Internet. In another example, the transmission device 1006 may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0071] The display switch device can be, for example, a touch screen liquid crystal display (LCD) that allows the user to interact with the user interface of the computer device 10 (or the mobile switch device).

[0072] Example 3

[0073] This application embodiment also provides a computer-readable storage medium, which can be disposed in a server to store at least one instruction or at least one program related to implementing a network topology-based anti-overlapping tripping method for mining distribution networks in the method embodiment. The at least one instruction or the at least one program is loaded and executed by the processor to implement the network topology-based anti-overlapping tripping method for mining distribution networks provided in the above method embodiment.

[0074] Optionally, in this embodiment, the storage medium may be located at at least one of the multiple network servers in a computer network. Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0075] Example 4

[0076] This invention also provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform a network topology-based method for preventing cascading tripping in mining power distribution networks provided in the various optional embodiments described above.

[0077] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, the above description focuses on specific embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired results. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired results. In some implementations, multitasking and parallel processing are also possible or may be advantageous.

[0078] The various embodiments in this application are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the device, switching device, and storage medium embodiments are basically similar to the method embodiments, so the descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0079] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0080] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A method for preventing cascading tripping in mining distribution networks based on network topology, characterized in that, Includes the following steps: S1, Electrical connection: The mining power distribution network includes several switching devices, each of which includes a switch module. Based on the electrical topology, adjacent switching devices are connected through the switch module. The switch module has at least four ports, and each switch device further includes a central processing unit and a detection module, both of which are connected to the central processing unit. S2, Network topology generation: Activate each of the switching devices, obtain the IP address and MAC address of each port of the switch module, form an information table, process the information in the information table, generate a network topology diagram using a network topology generation algorithm, and describe the electrical topology structure through the network topology diagram; S3, Implementation of the anti-cascading tripping function: When the switching device detects a fault, the faulty switching device broadcasts the fault information to the entire network. Based on the network topology map, the location of the currently faulty switching device is analyzed to obtain the switching devices associated with the currently faulty switching device. The fault information is processed to realize anti-cascading tripping, specifically including the following steps: S31, when the detection module of the switching device detects a fault, the central processing unit obtains the fault information, converts the fault information into JSON data and transmits it to the switch module, and broadcasts the JSON data to the entire network through the port of the switch module; S32, the switch device in normal state receives the JSON data, analyzes the JSON data in conjunction with the network topology diagram, and parses the location of the currently faulty switch device on the network topology diagram; S33, Calculate the associated switching devices based on the location of the currently faulty switching device on the network topology diagram; S34 If the faulty switchgear trips in time within the preset time, the tracking of the associated switchgear is released; otherwise, if the faulty switchgear fails to trip in time within the preset time, the associated switchgear is controlled to trip, thus preventing cascading tripping.

2. The method for preventing cascading tripping in mining power distribution networks based on network topology as described in claim 1, characterized in that, Step S2 specifically includes the following steps: S21, Start each of the switching devices and initialize each of the switching devices; S22, the central processing unit reads the IP address and MAC address of each port of the switch module, and broadcasts the IP address and MAC address to the entire network in port-based organization; S23, the switching device receives the IP address and MAC address of the broadcast transmission, forms an information table, processes the information in the information table, and uses a network topology generation algorithm to construct a sub-topology map with the current switching device as the branch; S24, integrate all the sub-topology graphs to obtain the network topology graph.

3. The method for preventing cascading tripping in mining power distribution networks based on network topology as described in claim 2, characterized in that, The ports connecting the switching device and adjacent switching devices are determined based on the upper, lower, left, and right signal flow directions of the electrical topology.

4. The method for preventing cascading tripping in mining power distribution networks based on network topology as described in claim 3, characterized in that, The four ports are respectively the first port, the second port, the third port and the fourth port. The first port is used to connect to the upstream switch device, and the second port, the third port and the fourth port are used to connect to the downstream switch device. The lower-level switching device includes the switching device located downstream, the switching device located on the left side, and the switching device located on the right side.

5. The method for preventing cascading tripping in mining distribution networks based on network topology as described in claim 4, characterized in that, The second port is used to connect to the switch device located downstream, the third port is used to connect to the switch device located on the left side, and the fourth port is used to connect to the switch device located on the right side.

6. The method for preventing cascading tripping in mining power distribution networks based on network topology as described in claim 1 or 2, characterized in that, The central processing unit periodically reads the IP address and MAC address of each port of the switch module, as well as the fault information detected by the detection module; The fault information includes IP address and MAC address, switch status, and fault cause.

7. A computer device, characterized in that, include: processor; Memory, used to store executable instructions; The processor is configured to read the executable instructions from the memory and execute the executable instructions to implement the network topology-based anti-over-tripping method for mining power distribution networks as described in any one of claims 1 to 6.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, causes the processor to implement the network topology-based method for preventing cascading tripping in mining power distribution networks as described in any one of claims 1 to 6.

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