Power cable hidden danger pre-control method based on single-direction linked list structure and related device

Abstract

The power cable hidden danger pre-control method based on the single-direction linked list structure and related device, including: obtaining power cable information and power link node information; based on the power cable information and the power link node information, establishing a power cable tree based on the single-direction linked list structure; taking the power cable tree based on the single-direction linked list structure as a clue, searching corresponding hidden danger points in the power cable tree based on the single-direction linked list structure, and developing hidden danger pre-control. The power cable tree based on the single-direction linked list structure of the present application stores the distribution structure of the power plant control power cable in a more clear and accurate manner compared with a simple cable list. The power cable management system of the present application has the advantages of authority management, behavior record storage, report automatic generation and statistical analysis compared with the previous manual table editing work mode.

Description

Technical Field

[0001] This invention belongs to the field of power cable hazard investigation and prevention, and specifically relates to a power cable hazard prevention and control method and related device based on a unidirectional linked list structure. Background Technology

[0002] The control system is the nervous system of a power generation enterprise, crucial to the safe and economical operation of the power plant. The safe operation of the control power supply, which provides energy to the control system, directly affects the system's performance. In recent years, power industry standards have gradually introduced new requirements for control power supplies in terms of design and management. However, power generation enterprises currently still use cable inventories to record and manage control power supplies, which suffers from problems such as inconsistent ledger versions, untimely data updates, redundant and unintuitive data, lack of data self-checking functions, and lack of hazard prevention and control functions. Summary of the Invention

[0003] The purpose of this invention is to provide a method and related device for the early control of potential hazards in power cables based on a unidirectional linked list structure, so as to solve the problems of inconsistent ledger versions, untimely data updates, redundant and unintuitive data, lack of data self-checking function, and lack of potential hazard early control function.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A power cable hazard prevention and control method based on a unidirectional linked list structure includes:

[0006] Obtain power cable information and power link node information;

[0007] Based on power cable information and power link node information, a power cable tree based on a unidirectional linked list structure is established.

[0008] Using a power cable tree with a unidirectional linked list structure as a guide, we search for corresponding potential hazards within the unidirectional linked list structure of the power cable tree and carry out hazard prevention and control.

[0009] Furthermore, the power cable information includes cable name X1, parent link node X2, child link node X3, design length X4, voltage level X5, power source nature X6, importance level X7, cable brand and model X8, construction unit X9, laying date X10, actual length X11, line insulation resistance X12, shielding layer grounding resistance X13, and cable tray number X14.

[0010] Furthermore, the power link node information includes: parent node W1, node type W2, deployment time W3, and node schematic W4.

[0011] Furthermore, a power cable tree based on a unidirectional linked list structure is established: the power link node is the branch point of the power cable tree, the power cable is the branch of the power cable tree, and the power cable tree based on a unidirectional linked list structure is established, with the power terminal equipment at the end of the branch of the power cable tree.

[0012] Furthermore, in the power cable tree with a unidirectional linked list structure, each power cable is connected to a parent link node and a child link node. The current flow can only be unidirectional. Cables from different sources flow to the same node. Voltage level conversion, seamless switching, or direct connection to dual-power supply equipment is performed according to the node type.

[0013] Furthermore, potential hazards include:

[0014] Potential hazards include redundant power supply to turbine trip solenoid valves, redundant power supply to independent devices and instruments, non-independent power supply to multiple local devices of the same type, cable laying hazards, auxiliary hazards during regular maintenance work, auxiliary hazards in the balanced distribution of thermal control power load throughout the plant, and auxiliary hazards in the formulation and drill of emergency plans.

[0015] Furthermore, specifically:

[0016] 1) Pre-control of redundant power supply hazards of turbine trip solenoid valves: Using the power cable tree as a clue, search for the parent nodes of the four trip solenoid valves, and then search for the parent nodes of the parent nodes in sequence until the root node is found. If the root node is the root node of the same power link, then there is a hidden danger in the power supply configuration of the turbine trip solenoid valve. If two of them are configured with the same power supply, that is, the principle of oil circuit and circuit coordination is not met, then there is a hidden danger in the power supply configuration of the turbine trip solenoid valve.

[0017] 2) Preventive control of redundant power supply hazards for independent devices and instruments: Independent devices include boiler flame detection devices and turbine TSI devices, and instruments include turbine overspeed control units, turbine tachometers, turbine emergency safety device action detection devices and boiler furnace flame detection cameras. Using the power cable tree as a clue, search for one or more power link root nodes of each terminal electrical device's independent device or instrument. If all root nodes are configured with the same power supply, or if no node is powered by a UPS, then the power supply of the terminal electrical device is not redundant, which poses a safety hazard.

[0018] 3) Pre-control of potential hazards of multiple local devices of the same type not having independent power supply: Using the power cable tree as a clue, search for the parent node and root node of the power link of local devices of the same type, determine the parent node and root node of the device, and determine whether the parent node is actually the same power link node. If so, the power supply of the device is not independent. When their common power link node fails, all devices lose power.

[0019] 4) Preventive control of cable laying hazards: Using the power cable tree as a clue, the cable tray numbers through which each power cable passes are searched. It is known that the cable tray contains the spatial coordinate information of the starting point and the ending point of the tray. By drawing the cable trajectory in the 5G-based 3D visualization virtual reality power plant, the spatial position information of the heat pipe is determined. When the distance between the cable and the heat pipe does not meet the requirements, it is determined that there is a safety hazard of long-term high temperature radiation aging and cracking of the power cable at that location.

[0020] 5) Regular work assistance and hidden danger prevention during maintenance: Using the power cable tree as a guide, according to the importance of the power cables, set the regular work level and to-do items during maintenance. Maintenance personnel complete the to-do items according to the importance of the regular work operation guide, and record them in the system in a timely manner to automatically generate maintenance documents.

[0021] 6) Plant-wide thermal control power load balance distribution auxiliary hidden danger prevention and control: Taking the power cable tree as the clue, the fuse capacity of the child node is lower than that of the parent node, and the fuse capacity of the parent node is higher than the sum of the fuse capacities of all its child nodes. Through the plant-wide thermal control power load distribution diagram based on the power cable tree, we can intuitively judge whether the power load distribution of each node is balanced. If it is unbalanced or the fuse capacity configuration is unreasonable, there is a safety hazard in the control power system.

[0022] 7) Emergency plan development and drills to assist in the prevention and control of potential hazards: Using the power cable tree as a guide, develop emergency plans for power system failures according to the importance of power cables and power link nodes.

[0023] Furthermore, a power cable hazard prevention and control system based on a unidirectional linked list structure includes:

[0024] The data acquisition module is used to acquire power cable information and power link node information;

[0025] The power cable tree creation module is used to create a power cable tree based on a unidirectional linked list structure, based on power cable information and power link node information.

[0026] The pre-control module is used to search for potential hazards in a power cable tree with a unidirectional linked list structure, and to carry out hazard pre-control.

[0027] Furthermore, a computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of a power cable hazard prevention and control method based on a unidirectional linked list structure.

[0028] Furthermore, a computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of a power cable hazard prevention and control method based on a unidirectional linked list structure.

[0029] Compared with the prior art, the present invention has the following technical effects:

[0030] This invention uses a power cable tree with a unidirectional linked list structure to store the distribution structure of power plant control power cables in a clearer and more accurate way than a simpler cable inventory.

[0031] Compared to the previous manual form editing method, the power cable management system of this invention has advantages such as access control, behavior record storage, automatic report generation, and statistical analysis.

[0032] This invention is a method for preventing and controlling potential hazards in power plant control power supplies based on power cable trees. It can achieve automatic or semi-automatic prevention and control of potential hazards in power plant control power supplies. It is faster, more accurate and more effective than manual analysis and is not affected by personnel quality. Attached Figure Description

[0033] Figure 1 Power cable structure diagram of this invention;

[0034] Figure 2 Power link node structure diagram of the present invention;

[0035] Figure 3 Example diagram of the power cable tree structure of this invention;

[0036] Figure 4 The structural diagram for hazard prevention and control in this invention. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings:

[0038] Please see Figures 1 to 4 A method for preventing and controlling potential hazards in power cables based on a unidirectional linked list structure includes the following steps:

[0039] Establish a power cable tree based on a unidirectional linked list structure;

[0040] Using this unidirectional linked list tree as a guide, we can carry out hazard prevention and control.

[0041] The system establishes a power cable tree based on a unidirectional linked list structure, which consists of power cables and power link nodes.

[0042] The power cable X structure is as follows: Figure 1As shown, the specifications include cable name X1, parent link node X2, child link node X3, design length X4, voltage rating X5, power source nature X6, importance X7, cable brand and model X8, construction unit X9, laying date X10, actual length X11, line insulation resistance X12, shielding layer grounding resistance X13, and cable tray number X14. The cable name X1 describes the cable's purpose; the parent link node X2 points to the upstream power link node of the power cable; the child link node X3 points to the downstream power link node of the power cable; the design length X4 describes the cable length during the design phase; the voltage rating X5 describes the power cable voltage rating, categorized as AC 380V, AC 220V, DC 110V, DC 220V, DC 24V, and DC 48V; and the power source nature X6 describes the power source nature, categorized as plant power supply, factory power supply, etc. The system utilizes sections A and B, UPS power supplies UPSA and UPSB, backup power supplies (Security Section A and Security Section B), DC 110V / 220V generator DC system 1 and generator DC system 2, and DC 24V / 48V power supplies, converting AC 220V to 24V / 48V via power modules. The importance level X7 describes the critical nature of the power supply, categorized as follows: critical load DC power supply (110V / 220V) for protection interlocks, DC relays, etc.; AC uninterruptible power supply (220V) for DCS, DEH, ETS systems, etc.; and AC backup power supply. When the entire load is shut down, it is needed for short-term use of vacuum breakers, air extraction valves, etc.; secondary loads are used for auxiliary sewage discharge, auxiliary workshop control systems, etc.; general loads are used for instruments that do not require continuous use during operation, maintenance power supplies, etc.; the cable brand and model X8 describes the cable brand name and cable model, specifically, the cable brand and model indicates the cable diameter and the cable flame retardant rating; the construction unit X9 describes the construction unit for laying the auxiliary power cable; the laying date X10 describes the date and time of laying the power cable; the actual length X11 describes the actual length of the power cable laid; the line insulation resistance describes the insulation resistance of the power cable; the shielding layer grounding resistance X12 describes the shielding layer grounding resistance of the power cable; the cable tray number X13 describes the cable tray number through which the laid power cable passes, specifically, the cable tray includes spatial location information, including the spatial coordinates of the starting point and the key spatial coordinates of the cable tray. Based on the cable tray number, the spatial layout of the power cable can be further determined, providing data support for 5G-based 3D visualization virtual reality power plants.

[0043] The power link node W structure is as follows: Figure 2As shown, it includes a parent node W1, a node type W2, an activation time W3, and a node schematic diagram W4. The parent node W1 describes the upstream node of this power link node; in particular, for nodes with power redundancy configurations, there may be two or three parent nodes. The node type W2 describes the type of the power link node, which can be categorized as an air switch, power conversion module, power switching device, integrated power module, distribution cabinet, power cabinet, relay, circuit breaker, dual-power supply equipment, and power terminal equipment. The activation time W3 describes the time when the power link node was put into use. The node schematic diagram W4 describes the power input and output circuit schematic of this node.

[0044] The establishment of a power cable tree based on a unidirectional linked list structure means that each power cable is connected to a parent link node and a child link node, describing where the cable comes from and where it goes. Current flow can only be unidirectional, and it is stipulated that current can only flow from the parent node to the child node. One, two, or three cables from different sources flow to the same node. Depending on the node type, voltage level conversion, seamless switching, or direct connection to dual-power supply equipment may be performed. Power link nodes are the branching points of the power cable tree, power cables are the branches of the power cable tree, and the ends of the branches of the power cable tree must be the power-consuming terminal equipment. For example... Figure 3 As shown, W01 and W02 are root nodes. The parent node of power cable X01 is W01 and the child node is W02. W21 has two parent nodes, W03 and W13. W21 is the end of the tree and is the power terminal equipment.

[0045] The structure for hazard prevention and control, based on this unidirectional linked list tree, is as follows: Figure 4 As shown, it includes the following:

[0046] 1) Pre-control of redundant power supply hazards for turbine trip solenoid valves: According to industry standards, turbine trip solenoid valves adopt a dual-channel AC control power supply. The four trip solenoid valves are connected in series and parallel, each powered by two AC power sources. With the coordination of the oil circuit and the electrical circuit, the loss of one power source will not cause malfunction, while the simultaneous loss of two power sources will automatically trip the circuit breaker. Using the power cable tree as a guide, the parent nodes of the four trip solenoid valves can be found. Based on the parent nodes, the search continues to the parent nodes of the parent nodes until the root node is found, which are power sources 1, 2, 3, and 4. If power sources 1 to 4 are connected to the same root node of the same power link, then there is a potential hazard in the power supply configuration of the turbine trip solenoid valves. If power sources 1 and 2, 1 and 4, 3 and 2, or 3 and 4 are connected to the same power source, i.e., the coordination principle of the oil circuit and the electrical circuit is not met, then there is a potential hazard in the power supply configuration of the turbine trip solenoid valves.

[0047] 2) Preventive Control of Redundant Power Supply Hazards for Important Independent Devices and Instruments: According to industry standards, important independent devices, such as boiler flame detection devices and turbine TSI devices, and important instruments, such as turbine overspeed control units, turbine tachometers, turbine emergency safety device activation detection devices, and boiler furnace flame detection cameras, should adopt dual-power redundant power supply. One power supply should be provided by the unit's AC UPS, and the other should preferably be provided by a UPS or backup power supply. Following the power cable tree, one or more power link root nodes of important independent devices or instruments at each terminal device can be found. If all root nodes are configured with the same power supply, or if no node is powered by a UPS, the power supply to that terminal device is not redundant, posing a safety hazard.

[0048] 3) Risk Prevention and Control of Non-Independent Power Supply for Multiple Similar Local Equipment: According to industry standards, the power supply system for multiple similar local equipment such as coal feeders, pulverizers, and coal mills should use one UPS power supply and one backup power supply. To prevent the complete shutdown of coal feeders, pulverizers, or coal mills due to power system failures, each piece of equipment should be grouped and segmented for power distribution, rather than all connected to the output power of a redundant power switching device. Using the power cable tree as a guide, the parent and root nodes of the power link for similar local equipment can be found. For example, for six coal feeders (A to F), the parent nodes are WA to WF, and the root nodes are WUPSA and WUPSB. Although the root nodes of the six pulverizers are redundant, the six parent nodes WA to WF are actually the same power link node. Therefore, the power supply for the six coal feeders is not independent. When their common power link node fails, such as with a dual power switching device, all six coal feeders will lose power.

[0049] 4) Cable Laying Hazard Prevention and Control: According to industry standards, exposed cables should not be laid parallel to heating pipes. When there is no protective partition between the cable and the heating pipe, the spacing between them should be greater than 500mm when laid parallel, greater than 250mm when crossed, and greater than 100mm when laid parallel to other pipes. Construction should strictly follow the correct design drawings, ensuring neat wiring. Cables of different voltage levels within the same channel should be arranged from bottom to top according to voltage level and laid in layers on cable supports. Using the power cable tree as a guide, the cable tray numbers through which each power cable passes can be found. Knowing the spatial coordinates of the cable tray's starting and ending points, the cable trajectory can be drawn in a 5G-based 3D visualization virtual reality power plant to determine its spatial position relative to the heating pipe. When the distance between the cable and the heating pipe does not meet the requirements, it indicates a safety hazard of prolonged high-temperature radiation aging and cracking of the power cable at that location.

[0050] 5) Regular work during maintenance to assist in hazard prevention and control: According to industry standards, the power quality of the power supply must meet the required standards, especially parameters such as voltage fluctuation range, frequency, grounding resistance, dual-power switching time, and temperature at key connection points of power modules. These are all regular work items during maintenance. Due to tight maintenance schedules and numerous power cables on site, without an efficient method to identify important power cables and power link nodes, work may become chaotic, records unclear, and efficiency low. Using the power cable tree as a guide, regular work levels and to-do items can be set according to the importance of the power cables. Maintenance personnel can then complete these items according to priority and urgency, with timely recording and automatic generation of maintenance documents in the system. This improves the efficiency and accuracy of maintenance personnel and is a method to assist in hazard prevention and control during maintenance.

[0051] 6) Plant-wide thermal control power supply load balancing and distribution aids in hazard prevention and control: In accordance with industry standards, fuse selection should meet relevant requirements. The capacity ratio of fuses or air switches between upstream and downstream power supplies should be reasonable. Selecting fuses with too low a capacity may lead to cascading tripping, while selecting fuses with too high a capacity may result in delayed tripping and escalation of the accident. Using the power cable tree as a guide, the fuse capacity of child nodes should be lower than that of the parent node, and the fuse capacity of the parent node should be higher than the sum of the fuse capacities of all its child nodes, but with a certain margin. Through a plant-wide thermal control power supply load distribution diagram based on the power cable tree, managers can intuitively judge whether the power load distribution at each node is balanced. If it is unbalanced or the fuse capacity configuration is unreasonable, there are safety hazards in the control power supply system.

[0052] 7) Emergency Response Plan Development and Drills to Aid in Hazard Prevention and Control: Faults in thermal control power systems occur frequently during operation, such as power loss in the DCS control system, operator or engineer workstations, power loss in the switch, and power switching device malfunctions. Improper handling can lead to escalation of the fault, causing unit outages or even damage to main equipment. Using the power cable tree as a framework, emergency response plans for power system faults can be developed according to the importance of power cables and power link nodes, forming a long-term management mechanism. Regular drills ensure that fault handling can be organized quickly and accurately when faults occur, minimizing the impact of the faults.

[0053] In another embodiment of the present invention, a power cable hazard prevention and control system based on a unidirectional linked list structure is provided, which can be used to implement the above-mentioned power cable hazard prevention and control method based on a unidirectional linked list structure. Specifically, the system includes:

[0054] The data acquisition module is used to acquire power cable information and power link node information;

[0055] The power cable tree creation module is used to create a power cable tree based on a unidirectional linked list structure, based on power cable information and power link node information.

[0056] The pre-control module is used to search for potential hazards in a power cable tree with a unidirectional linked list structure, and to carry out hazard pre-control.

[0057] The module division in this embodiment of the invention is illustrative and represents only one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in the various embodiments of the invention can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0058] In another embodiment of the present invention, a computer device is provided, comprising a processor and a memory. The memory stores a computer program, which includes program instructions. The processor executes the program instructions stored in the computer storage medium. The processor may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. It is the computing and control core of the terminal, suitable for implementing one or more instructions, specifically suitable for loading and executing one or more instructions in the computer storage medium to achieve a corresponding method flow or corresponding function; the processor described in this embodiment of the present invention can be used for the following operations.

[0059] In another embodiment of the present invention, a storage medium is provided, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device used to store programs and data. It is understood that the computer-readable storage medium here can include both the built-in storage medium in the computer device and extended storage media supported by the computer device. The computer-readable storage medium provides storage space that stores the operating system of the terminal. Furthermore, the storage space also stores one or more instructions suitable for loading and execution by a processor. These instructions can be one or more computer programs (including program code). It should be noted that the computer-readable storage medium here can be high-speed RAM or non-volatile memory, such as at least one disk storage device. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the corresponding steps in the above embodiments.

[0060] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0061] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0062] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1The function specified in one or more boxes.

[0063] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A power cable hazard pre-control method based on a single-direction linked list structure, characterized in that, The method comprises the following steps: Obtain power cable information and power link node information; Based on the power cable information and the power link node information, establish a power cable tree based on a single-linked list structure; Using the power cable tree based on a single-linked list structure as a clue, search for corresponding hidden danger points in the power cable tree based on a single-linked list structure, and carry out hidden danger pre-control; The hidden danger points include: Turbine trip solenoid redundant power supply hidden danger, independent device and instrument redundant power supply hidden danger, multiple same type on-site equipment power supply not independent hidden danger, cable laying hidden danger, periodic work auxiliary hidden danger during maintenance, auxiliary hidden danger of power load balance distribution of whole plant thermal control power supply, and emergency plan making and drilling auxiliary hidden danger; Specifically: 1) Turbine trip solenoid redundant power supply hidden danger pre-control: search for the parent nodes of four trip solenoids using the power cable tree as a clue, search for the parent nodes of the parent nodes in turn until the root nodes are found, if the root nodes are the same power link root nodes, the turbine trip solenoid power supply configuration has hidden danger, if two of them are configured as the same power supply, that is, the oil circuit and the circuit do not meet the cooperation principle, the turbine trip solenoid power supply configuration has hidden danger; 2) Independent device and instrument redundant power supply hidden danger pre-control: independent devices include boiler fire detection devices and turbine TSI devices, and instruments include turbine overspeed measurement and control units, turbine speed meters, turbine crisis safety device action detection devices and boiler furnace flame detection cameras, search for one or more power link root nodes of each terminal electrical equipment independent device or instrument using the power cable tree as a clue, if all the root nodes are configured as the same power supply, or none of the root nodes is supplied by UPS, the power supply of the terminal electrical equipment is not redundant, and there is a safety hidden danger; 3) Multiple same type on-site equipment power supply not independent hidden danger pre-control: search for the same type of on-site equipment power link parent nodes and root nodes using the power cable tree as a clue, determine the parent nodes and root nodes of the equipment, and judge whether the parent nodes are actually the same power link nodes, if yes, the power supply of the equipment is not independent, and when the common power link nodes of them fail, all the equipment loses power; 4) Cable laying hidden danger pre-control: search for the laying passage of each power cable using the power cable tree as a clue, the cable bridge contains the spatial coordinate information of the bridge starting point and ending point, draw the cable track in the 5G-based three-dimensional visual virtual power plant, and judge the spatial position information of the heat pipe, when the distance between the cable and the heat pipe does not meet the requirements, it is judged that the laying of the power cable at this position has the safety hidden danger of long-term high-temperature radiation aging and cracking; 5) Periodic work auxiliary hidden danger pre-control during maintenance: set the maintenance period work level and to-do list according to the importance of the power cable using the power cable tree as a clue, maintenance personnel complete the to-do list according to the importance and record and automatically arrange the maintenance file in the system in a timely manner according to the method and periodic work operation guidance. 6) Auxiliary hidden danger pre-control of whole plant thermal control power supply load balance distribution: taking the power cable tree as the clue, the fuse capacity of the child node is lower than that of the parent node, and the fuse capacity of the parent node is higher than the sum of the fuse capacities of all child nodes. Through the whole plant thermal control power supply load distribution diagram based on the power cable tree, it is directly judged whether the power supply load distribution of each node is balanced. If it is not balanced or the fuse capacity configuration is unreasonable, there is a safety hidden danger in the control power supply system; 7) Auxiliary hidden danger pre-control of emergency plan development and drilling: taking the power cable tree as the clue, according to the importance of the power cable and the power link node, the power system failure emergency plan is developed.

2. The power cable hazard pre-control method based on a singly linked list structure according to claim 1, characterized in that, The power cable information includes cable name X1, parent link node X2, child link node X3, design length X4, voltage grade X5, power source nature X6, importance X7, cable brand and model X8, construction unit X9, laying date X10, actual length X11, line insulation resistance X12, shielding layer grounding resistance X13 and cable bridge number X14.

3. The power cable hazard pre-control method based on a singly linked list structure according to claim 1, characterized in that, The power link node information includes: parent node W1, node type W2, put-in time W3 and node schematic W4.

4. The power cable hazard pre-control method based on a singly linked list structure according to claim 1, characterized in that, Establishing a power cable tree based on a single-linked list structure: the power link node is the branching point of the power cable tree, and the power cable is the branch of the power cable tree. A power cable tree based on a single-linked list structure is established, and the end of the branch of the power cable tree is the terminal electrical equipment.

5. The power cable hazard pre-control method based on a singly linked list structure according to claim 4, characterized in that, In the single-linked list structure of the power cable tree, each power cable is connected with the parent link node and the child link node. The current flow direction can only be unidirectional. Different sources of cables flow to the same node, and voltage level conversion, non-disturbance switching or direct connection of dual power supply type equipment are performed according to the node type.

6. A power cable hazard pre-control system based on a single-linked list structure, characterized in that, It includes: a data acquisition module for acquiring power cable information and power link node information; a power cable tree establishment module for establishing a power cable tree based on a single-linked list structure based on the power cable information and the power link node information; a pre-control module for searching corresponding hidden danger points in the single-linked list structure of the power cable tree based on the single-linked list structure of the power cable tree, and developing hidden danger pre-control; Hidden danger points include: turbine trip solenoid redundant power supply hidden danger, independent device and instrument redundant power supply hidden danger, multiple same type on-site equipment power supply not independent hidden danger, cable laying hidden danger, periodic work auxiliary hidden danger during maintenance, whole plant thermal control power supply load balance distribution auxiliary hidden danger, and emergency plan development and drilling auxiliary hidden danger; Specifically: 1) Turbine trip solenoid redundant power supply hidden danger pre-control: taking the power cable tree as the clue, searching for the parent nodes of the four trip solenoids, searching for the parent nodes of the parent nodes in turn until the root node is found. If the root nodes are the same power link root nodes, the turbine trip solenoid power configuration has hidden danger. If two of them are configured as the same power, i.e. not meeting the oil circuit and circuit cooperation principle, the turbine trip solenoid power configuration has hidden danger. 2) Independent device and instrument redundant power supply hidden pre-control: Independent devices include boiler fire detection devices and turbine TSI devices, and instruments include turbine overspeed measurement and control units, turbine speed meters, turbine crisis safety device action detection devices, and boiler furnace flame detection cameras. Taking the power cable tree as a clue, one or more power supply link root nodes of each terminal electrical equipment independent device or instrument are searched. If all root nodes are configured as the same power supply or no root node is powered by UPS, the power supply of the terminal electrical equipment is not redundant, and there is a safety hazard; 3) Multiple same type local equipment power supply not independent hidden pre-control: Taking the power cable tree as a clue, the parent node and the root node of the same type local equipment power supply link are searched to determine the parent node and the root node of the equipment. It is judged whether the parent node is actually the same power link node. If yes, the power supply of the equipment is not independent, and when the common power link node fails, all the equipment will lose power; 4) Cable laying hidden pre-control: Taking the power cable tree as a clue, the laying of each power cable is searched through the cable bridge numbering. The cable bridge contains the spatial coordinate information of the bridge starting point and the ending point. By drawing the cable track in the 5G-based three-dimensional visual virtual power plant, the spatial position information of the heat pipe is judged. When the distance between the cable and the heat pipe does not meet the requirements, it is judged that the laying of the power cable at this place has the safety hazard of long-term aging and cracking under high temperature radiation; 5) Maintenance period regular work auxiliary hidden pre-control: Taking the power cable tree as a clue, the maintenance period regular work level and to-do list are set according to the importance of the power cable. The maintenance personnel complete the to-do list according to the importance and record and automatically organize the maintenance file in the system in a timely manner; 6) Full plant thermal control power supply load balance distribution auxiliary hidden pre-control: Taking the power cable tree as a clue, the fuse capacity of the child node is lower than that of the parent node, and the fuse capacity of the parent node is higher than the sum of the fuse capacities of all child nodes. Through the full plant thermal control power supply load distribution diagram based on the power cable tree, it is directly judged whether the power supply load distribution of each node is balanced. If it is not balanced or the fuse capacity configuration is unreasonable, the control power supply system has a safety hazard; 7) Emergency plan development and exercise auxiliary hidden pre-control: Taking the power cable tree as a clue, the power supply system fault emergency plan is developed according to the importance of the power cable and the power link node.

7. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to realize the steps of the power cable hidden pre-control method based on the single-direction link list structure according to any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, the computer-readable storage medium comprising: The computer program is executed by the processor to realize the steps of the power cable hidden pre-control method based on the single-direction link list structure according to any one of claims 1 to 5.

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