Distributed cable safety online monitoring method

Abstract

The invention discloses a distributed cable safety online monitoring method, and relates to the technical field of cable safety monitoring, and the method comprises the steps: obtaining cable connection information, constructing a cable topological structure based on the cable connection information, configuring a corresponding storage structure corresponding to the cable topological structure in a monitoring platform, and deploying a butt joint layer corresponding to the storage structure, the butt joint layer comprises a positioning layer, a butt joint area and a plurality of butt joint points; acquiring operation information of the cable in real time, and storing the operation information into a storage structure of the corresponding cable topological structure; prompt information of the positioning layer is obtained, and the prompt information comprises the unauthorized network and the access position of the unauthorized network on the positioning layer. According to the invention, only a small number of butt-joint points need to be set, and the butt-joint of the unauthorized network is realized through the cooperation of the butt-joint points, the positioning layer and the butt-joint area, so that the security of operation data can be ensured, the operation amount of system deployment can be reduced, and the pressure of system operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of cable safety monitoring technology, and specifically to a distributed online cable safety monitoring method. Background Technology

[0002] With the continuous development of power systems and the acceleration of urbanization, cables, as an important channel for power transmission, play a crucial role in the power system. When conducting distributed monitoring of cables, operational data is collected and stored. Based on the stored data, cable faults are analyzed. However, there are security risks in the existing power data storage process. Unauthorized networks may access the stored power data, leading to data leakage and alteration, which in turn affects power security and the results of cable fault analysis. Summary of the Invention

[0003] The purpose of this invention is to provide a method for online monitoring of distributed cable safety to address the shortcomings of the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a method for online monitoring of distributed cable safety, comprising the following steps: Obtain cable connection information, construct cable topology based on cable connection information, configure corresponding storage structure in the monitoring platform for corresponding cable topology, and deploy docking layer for corresponding storage structure. The docking layer includes positioning layer, docking area and multiple docking points. The system collects cable operation information in real time and stores the information in the corresponding cable topology storage structure. Obtain the prompt information from the location layer, which includes the unauthorized network and the access location of the unauthorized network at the location layer. Enable the docking point to dock with the unauthorized network according to the prompt information. Based on Fourier transform, the operation information is used to generate a signal frequency distribution map over time. The part of the distribution map that exceeds the preset frequency is regarded as the high frequency part, and the cable corresponding to the high frequency part is regarded as the abnormal leakage cable.

[0005] In a preferred embodiment, the steps of acquiring cable connection information, constructing a cable topology based on the cable connection information, configuring a corresponding storage structure in the monitoring platform corresponding to the cable topology, and deploying a docking layer corresponding to the storage structure include: Obtain the cable connection structure, components involved in the cable connection, and cable length as cable connection information; The cable topology is constructed based on the cable connection information and stored on the monitoring platform; In the monitoring platform, the corresponding storage space is configured according to the cable topology, and the storage space is laid out according to the cable topology to obtain the storage structure. A docking area is deployed outside the storage structure, a positioning layer is set outside the docking area, and multiple docking points are set inside the docking area to obtain the docking layer.

[0006] In a preferred embodiment, the step of deploying a docking area outside the storage structure, setting a positioning layer outside the docking area, and setting multiple docking points inside the docking area to obtain the docking layer includes: A protection space is defined in the monitoring platform, the storage structure is placed in the protection space, and a docking area located outside the storage structure is set up in the protection space. A grid network and multiple docking points are set up in the docking area. The grid network is formed by connecting multiple network nodes, and the multiple docking points are randomly located in the grid network of the docking area. A data layer is set up inside the docking area, in the area outside the docking area. A positioning grid is set up on the data layer to obtain the positioning layer. The positioning grid is formed by connecting multiple adjacent data layer nodes. A correspondence is established between the positioning grid and the network grid. Based on the correspondence, a channel is established between the data layer nodes of the positioning grid and the network nodes of the network grid.

[0007] In a preferred embodiment, the step of setting a mesh network and multiple docking points in the docking area, wherein the mesh network is formed by connecting multiple network nodes, and the multiple docking points are randomly located in the mesh network of the docking area, includes: Multiple evenly distributed network nodes are set in the docking area, and adjacent network nodes are interconnected to form a network mesh; Multiple docking points are set in the docking area, where each docking point includes a docking end and a subspace connected to the docking end; Multiple docking points are randomly connected to the channels between network nodes and grid nodes through docking terminals.

[0008] In a preferred embodiment, the step of real-time acquisition of cable operation information and storage of the operation information in the storage structure of the corresponding cable topology includes: Multiple detection points are set in the cable, including current sensors and voltage monitors. The cable's operating information, including current and voltage information, is collected through these detection points. Authorize the upload channel of the storage structure for the detection points in the docking layer; Based on the detection points, the operational information is transmitted through the upload channel to the storage structure of the corresponding cable topology for storage.

[0009] In a preferred embodiment, the step of enabling the connection point to connect to the unauthorized network according to the corresponding prompt information includes: When an unauthorized network accesses the data layer, the unauthorized network is pulled to the nearest data layer node through the positioning grid. The unauthorized network is then transmitted to the channel through the data layer node. When the channel is used, the corresponding network node on the network grid is triggered to provide a prompt and is designated as an abnormal node. The nearest docking point to the abnormal node is then selected as the target docking point through the network grid. The target docking point moves to the location of the abnormal node to replace the abnormal node, and then docks with the unauthorized network through the target docking point.

[0010] In a preferred embodiment, the step of generating a time-varying frequency distribution map of the signal based on Fourier transform, identifying the portion of the distribution map exceeding a preset frequency as the high-frequency portion, and classifying the cable corresponding to the high-frequency portion as an abnormal leakage cable includes: Based on Fourier transform, current and voltage information are used to generate a time-varying distribution map of signal frequency. The distribution map includes... The axis represents time. Current distribution diagram with current as the axis and The axis represents time. Voltage distribution diagram with voltage as the axis; Set preset frequencies for the current distribution diagram and voltage distribution diagram respectively. The parts of the current distribution diagram and voltage distribution diagram that exceed the corresponding preset frequencies are regarded as high-frequency parts, and the cables corresponding to the high-frequency parts are regarded as abnormal leakage cables.

[0011] The technical effects and advantages provided by the present invention in the above technical solution are as follows: This invention connects to unauthorized networks through target docking points. In this way, the unauthorized network accesses the target docking point and its corresponding subspace, which has a good access acceptance function and protects the running data in the data structure. Only a small number of docking points need to be set up. The docking points, positioning layer and docking area cooperate to achieve the connection to unauthorized networks. This can not only ensure the security of running data and prevent data leakage and tampering, but also reduce the workload of system deployment and reduce the pressure on system operation. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] Example 1, please refer to Figure 1 As shown in the figure, the distributed cable safety online monitoring method described in this embodiment includes the following steps: S1. Obtain cable connection information, construct cable topology based on cable connection information, configure corresponding storage structure in the monitoring platform for corresponding cable topology, and deploy docking layer for corresponding storage structure. The docking layer includes positioning layer, docking area and multiple docking points. S2. Collect cable operation information in real time and store the operation information in the storage structure of the corresponding cable topology; S3. Obtain the prompt information from the location layer, including the unauthorized network and the access location of the unauthorized network on the location layer. Enable the docking point to dock with the unauthorized network according to the prompt information. S4. Based on Fourier transform, generate a distribution map of signal frequency over time from the operating information. The part of the distribution map that exceeds the preset frequency is taken as the high-frequency part, and the cable corresponding to the high-frequency part is taken as the abnormal leakage cable.

[0016] In one embodiment, step S1, which involves acquiring cable connection information, constructing a cable topology based on the cable connection information, configuring a corresponding storage structure in the monitoring platform corresponding to the cable topology, and deploying a docking layer corresponding to the storage structure, includes: S11. Obtain the cable connection structure, components involved in the cable connection, and cable length as cable connection information; S12. Construct the cable topology based on the cable connection information and store it on the monitoring platform; S13. Configure corresponding storage space in the monitoring platform according to the cable topology, and arrange the storage space according to the cable topology to obtain the storage structure. S14. Deploy a docking area outside the storage structure, set a positioning layer outside the docking area, and set multiple docking points inside the docking area to obtain the docking layer; As described in steps S11-S14 above, the connection structure between cables, the components connected to the cables, and the cable length are obtained as cable connection information. Then, nodes are set according to the components involved in the cable connection. The nodes are connected according to the cable connection structure to obtain the cable topology. The nodes are represented by icons of the components involved in the cable connection. After obtaining the cable topology, corresponding storage space is configured for storing the real-time operation information of the cables. To ensure the correspondence of the operation information storage, the storage space is arranged in the same storage structure as the cable topology. There is a one-to-one structural correspondence between the storage structure and the corresponding cable topology. When storing the operation information in the storage structure, it can be stored in the corresponding storage structure according to the cable topology where the operation information is located. For example, if the operation information of a cable in the cable topology is current I and voltage U, then the current I and voltage U are stored in the space of the storage structure corresponding to that cable. This has a good corresponding storage function and facilitates the monitoring and analysis of the cable. Then, a docking layer is set on the outside of the storage structure. The docking layer can effectively protect the operation information in the storage structure, prevent access from external networks, and ensure the security and accuracy of data storage.

[0017] In one embodiment, step S14, which involves deploying a docking area outside the storage structure, setting a positioning layer outside the docking area, and setting multiple docking points inside the docking area to obtain the docking layer, includes: S141. Determine the protection space in the monitoring platform, place the storage structure in the protection space, and set up a docking area located outside the storage structure in the protection space. S142. Set up a grid network and multiple docking points in the docking area, wherein the grid network is formed by connecting multiple network nodes, and the multiple docking points are randomly located in the grid network of the docking area; S143. Set up a data layer in the area inside the docking area that is outside the docking area, and set up a positioning grid on the data layer to obtain a positioning layer. The positioning grid is obtained by connecting multiple adjacent data layer nodes. Establish the correspondence between the positioning grid and the network grid. Based on the correspondence, establish a channel between the data layer nodes of the positioning grid and the network nodes of the network grid. In one embodiment, step S142, which involves setting a mesh network and multiple docking points in the docking area, wherein the mesh network is formed by connecting multiple network nodes and the multiple docking points are randomly located within the mesh network of the docking area, includes: S1421. Set up multiple evenly distributed network nodes in the docking area, and connect adjacent network nodes to each other to form a network mesh. S1422. Multiple docking points are set in the docking area, wherein each docking point includes a docking end and a subspace connected to the docking end; S1423. Multiple docking points are randomly connected to the channels between network nodes and grid nodes through docking terminals. As described in steps S141-S143 above, a larger storage space is set up in the monitoring platform as a protective space. The storage structure is placed inside the protective space to protect the operational information in the storage structure. A storage area is set at the edge of the protective space as a docking area. In the docking area, a grid network is set up to ensure the movement of docking points. This network is set up in a grid shape, specifically: multiple evenly distributed network nodes are set up in the docking area, and multiple adjacent network nodes are interconnected to form a network grid. The docking points can move in the docking area. There are multiple docking points, randomly distributed in the grid network. The docking point is the docking end and the corresponding subspace. The subspace is always connected to the corresponding docking end. The docking point can change the network address and move through the network nodes of the grid network and the channels between multiple network nodes. The random distribution of docking points can better cope with subsequent unauthorized networks. For enhanced protection, a data layer is positioned within the docking area, outside the docking zone. A positioning grid, similar to a mesh network, is then established on this data layer. Multiple data layer nodes are configured within the data layer, connecting adjacent nodes. Each data layer node serves merely as a data access point. The data layer itself acts as a data storage space, located within the docking area, outside the docking zone. A correspondence is established between the positioning grid and the mesh network, connecting the data layer to the docking area. Since the data layer is a network layer with multiple data layer nodes connected in a flat arrangement, and the docking area is a network layer with multiple network nodes connected in a flat arrangement, channels are established between the data layer nodes of the positioning grid and the network nodes of the mesh network based on this correspondence. This robust network correspondence protects the operational information within the storage structure, preventing unauthorized network access to the data.

[0018] In one embodiment, step S2, which involves real-time acquisition of cable operation information and storage of the operation information in the storage structure of the corresponding cable topology, includes: S21. Multiple detection points are set in the cable, including current sensors and voltage monitors. The cable's operating information, including current information and voltage information, is collected through the detection points. S22. Authorize the upload channel for the test point to connect to the storage structure in the docking layer; S23. Based on the detection points, the operation information is transmitted through the upload channel to the storage structure of the corresponding cable topology for storage; As described in steps S21 and S22 above, multiple detection points are set in the cable, including current sensors and voltage monitors. These detection points collect cable operation information, including current and voltage information. The current sensor utilizes the principle of electromagnetic induction; when alternating current passes through the main conductor (usually a cable or wire), a magnetic field is generated around it. This magnetic field induces a current in the secondary coil of the current transformer, and this current is proportional to the main current. By setting different transformation ratios, the current transformer can safely convert large currents into smaller currents for measurement. For example, this system uses a 200 / 1 current transformer. When the current in the conductor passing through the transformer is 100A (I), the secondary coil will output a current of 0.5A (I0). 次 We measure the voltage drop across this resistor (U) by connecting a fixed-value resistor in series in the secondary circuit and using a chip. R This allows us to determine the current in the wire: , Voltage detection is achieved by dividing the voltage with a series resistor, converting a large voltage into a small voltage signal that the detection chip can detect. After collecting the operating information, the operating information is transmitted to the storage structure of the corresponding cable topology based on the detection point, which can better store the real-time operating information of the cable.

[0019] In one embodiment, step S3, which involves enabling the connection point to connect to an unauthorized network based on the corresponding prompt information, includes: S31. When there is an unauthorized network accessing the data layer, the unauthorized network is pulled to the nearest data layer node through the positioning grid. The unauthorized network is then transmitted to the channel through the data layer node. When the channel is used, the corresponding network node on the network grid is triggered to provide a prompt and is designated as an abnormal node. The nearest docking point to the abnormal node is then selected as the target docking point through the network grid. S32. The target docking point is moved to the location of the abnormal node to replace the abnormal node, and docking with the unauthorized network is performed through the target docking point; As described in steps S31 and S32 above, an upload channel for the detection point to connect to the storage structure is authorized in the docking layer. The detection point transmits the operation information to the storage structure of the corresponding cable topology through the upload channel for storage. During the storage of the operation information, the status of the data layer is monitored in real time. When an unauthorized network accesses the data layer, the unauthorized network will be pulled to the nearest data layer node through the channel connecting the data layer nodes or adjacent data layer nodes via the positioning grid. The data layer node acts as an access point to transmit the unauthorized network to the channel. This channel is the channel between the data layer node and the corresponding network node. When the channel is used, it triggers the corresponding network node on the network grid to provide a prompt and act as an abnormal node. The network node acts as another port of the channel. When the channel is used, it can be sensed by the corresponding network node. The docking point closest to the abnormal node is activated through the network grid as the target docking point. The target docking point is connected through the grid network (target... The target docking point (which can be transferred through network nodes and channels between network nodes) moves to the location of the abnormal node to replace it. It then connects to the unauthorized network via the target docking point. This ensures that the unauthorized network accesses the target docking point and its corresponding subspace, providing good access control and protecting the runtime data within the data structure. This eliminates the need for numerous external docking points on the storage structure; only a small number are required. The docking points, in conjunction with the data layer and docking area, enable connection to the unauthorized network. Only a few network access points are needed (e.g., network nodes and data layer nodes, which are simple and occupy little space, while docking points occupy more space). Therefore, it ensures the security of runtime data, reduces the workload of system deployment, and lowers the system's operational pressure. Furthermore, the external security pressure on the storage structure can be assessed by observing the docking point's usage. , This refers to the external security stress value of the storage structure. The number of times abnormal nodes occurred. This represents the maximum number of times a single docking point can be used. The number of network nodes, It is a constant greater than zero. It should be noted that the larger the external security pressure value of the storage structure, the greater the external defense pressure of the storage structure, and the lower the security.

[0020] In one embodiment, step S4, which generates a time-varying frequency distribution map of the signal based on Fourier transform, identifies the portion of the distribution map exceeding a preset frequency as the high-frequency portion, and designates the cable corresponding to the high-frequency portion as an abnormal leakage cable, includes: S41. Based on Fourier transform, generate a time-varying distribution map of the signal frequency from the current and voltage information. The distribution map includes... The axis represents time. Current distribution diagram with current as the axis and The axis represents time. Voltage distribution diagram with voltage as the axis; S42. Set the preset frequencies for the current distribution diagram and voltage distribution diagram respectively, and take the part of the current distribution diagram and voltage distribution diagram that exceeds the corresponding preset frequency as the high frequency part, and take the cable corresponding to the high frequency part as the abnormal leakage cable. As described in steps S41 and S42 above, the rapid abrupt changes in current and voltage are monitored in real time to accurately identify and locate leakage points in the low-voltage cable system. When the transient waveform recording module detects an abnormality, it stores the waveform using FLASH memory and then analyzes the signal using Fourier Transform (STFT). The current and voltage waveforms are decomposed using STFT to obtain the frequency distribution within a certain time slice. By repeating the Fourier Transform, the temporal distribution of the signal frequency can be generated, thereby obtaining the instantaneous changes of the signal and accurately analyzing leakage events. For example, voltage sampling waveforms... The axis represents time. The axis represents voltage. When leakage occurs, this waveform will experience transient interference over a period of time. The frequency of this transient interference will be relatively high. This waveform represents a leakage event, and can be identified as a leakage event.

[0021] By connecting to unauthorized networks through target connection points, the unauthorized networks access the target connection point and its corresponding subspace, providing good access protection and safeguarding the runtime data within the data structure. This approach eliminates the need for numerous external connection points to the storage structure, requiring only a small number. The connection to unauthorized networks is achieved through the cooperation of these connection points with the data layer and the connection area. Only a few network access points (e.g., network nodes and data layer nodes, which are simple and occupy little space, while connection points occupy more space) are needed. Therefore, this approach ensures the security of runtime data while reducing the workload and operational pressure of the system.

[0022] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for online monitoring of distributed cable safety, characterized in that, Includes the following steps: Obtain cable connection information, construct cable topology based on cable connection information, configure corresponding storage structure in the monitoring platform for corresponding cable topology, and deploy docking layer for corresponding storage structure. The docking layer includes positioning layer, docking area and multiple docking points. The system collects cable operation information in real time and stores the information in the corresponding cable topology storage structure. Obtain the prompt information from the location layer, which includes the unauthorized network and the access location of the unauthorized network at the location layer. Enable the docking point to dock with the unauthorized network according to the prompt information. Based on Fourier transform, the operation information is used to generate a signal frequency distribution map over time. The part of the distribution map that exceeds the preset frequency is regarded as the high frequency part, and the cable corresponding to the high frequency part is regarded as the abnormal leakage cable.

2. The method for online monitoring of distributed cable safety according to claim 1, characterized in that: The steps of acquiring cable connection information, constructing a cable topology based on the cable connection information, configuring a corresponding storage structure in the monitoring platform for the corresponding cable topology, and deploying a docking layer for the corresponding storage structure include: Obtain the cable connection structure, components involved in the cable connection, and cable length as cable connection information; The cable topology is constructed based on the cable connection information and stored on the monitoring platform; In the monitoring platform, the corresponding storage space is configured according to the cable topology, and the storage space is laid out according to the cable topology to obtain the storage structure. A docking area is deployed outside the storage structure, a positioning layer is set outside the docking area, and multiple docking points are set inside the docking area to obtain the docking layer.

3. The method for online monitoring of distributed cable safety according to claim 2, characterized in that: The steps of deploying a docking area outside the storage structure, setting a positioning layer outside the docking area, and setting multiple docking points inside the docking area to obtain the docking layer include: A protection space is defined in the monitoring platform, the storage structure is placed in the protection space, and a docking area located outside the storage structure is set up in the protection space. A grid network and multiple docking points are set up in the docking area. The grid network is formed by connecting multiple network nodes, and the multiple docking points are randomly located in the grid network of the docking area. A data layer is set up inside the docking area, in the area outside the docking area. A positioning grid is set up on the data layer to obtain the positioning layer. The positioning grid is formed by connecting multiple adjacent data layer nodes. A correspondence is established between the positioning grid and the network grid. Based on the correspondence, a channel is established between the data layer nodes of the positioning grid and the network nodes of the network grid.

4. The method for online monitoring of distributed cable safety according to claim 3, characterized in that: The step of setting up a mesh network and multiple docking points in the docking area, wherein the mesh network is formed by connecting multiple network nodes and the multiple docking points are randomly located in the mesh network of the docking area, includes: Multiple evenly distributed network nodes are set in the docking area, and adjacent network nodes are interconnected to form a network mesh; Multiple docking points are set in the docking area, where each docking point includes a docking end and a subspace connected to the docking end; Multiple docking points are randomly connected to the channels between network nodes and grid nodes through docking terminals.

5. The method for online monitoring of distributed cable safety according to claim 4, characterized in that: The step of acquiring cable operation information in real time and storing the operation information in the storage structure of the corresponding cable topology includes: Multiple detection points are set in the cable, including current sensors and voltage monitors. The cable's operating information, including current and voltage information, is collected through these detection points. Authorize the upload channel of the storage structure for the detection points in the docking layer; Based on the detection points, the operational information is transmitted through the upload channel to the storage structure of the corresponding cable topology for storage.

6. The method for online monitoring of distributed cable safety according to claim 5, characterized in that: The steps for enabling the connection point to connect to the unauthorized network according to the corresponding prompt information include: When an unauthorized network accesses the data layer, the unauthorized network is pulled to the nearest data layer node through the positioning grid. The unauthorized network is then transmitted to the channel through the data layer node. When the channel is used, the corresponding network node on the network grid is triggered to provide a prompt and is designated as an abnormal node. The nearest docking point to the abnormal node is then selected as the target docking point through the network grid. The target docking point moves to the location of the abnormal node to replace the abnormal node, and then docks with the unauthorized network through the target docking point.

7. The method for online monitoring of distributed cable safety according to claim 1, characterized in that: The step of generating a signal frequency distribution map over time based on Fourier transform, identifying the portion of the distribution map exceeding a preset frequency as the high-frequency portion, and classifying the cable corresponding to the high-frequency portion as an abnormal leakage cable includes: Based on Fourier transform, current and voltage information are used to generate a time-varying distribution map of signal frequency. The distribution map includes... The axis represents time. Current distribution diagram with current as the axis and The axis represents time. Voltage distribution diagram with voltage as the axis; Set preset frequencies for the current distribution diagram and voltage distribution diagram respectively. The parts of the current distribution diagram and voltage distribution diagram that exceed the corresponding preset frequencies are regarded as high-frequency parts, and the cables corresponding to the high-frequency parts are regarded as abnormal leakage cables.

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