Power distribution network fault removal method, device and equipment based on 5G technology and medium

Abstract

The invention relates to the technical field of electric power, and discloses a 5G technology-based power distribution network fault removal method, device and equipment and a medium, and the method comprises the steps: carrying out the coupling operation of a topological matrix and a fault information matrix, generating a fault positioning matrix, and carrying out the fault removal through the fault positioning matrix. Positioning a fault node of the power distribution network and a plurality of switch devices corresponding to the fault node; through an estimation model, generating the removal time length of each switching device, selecting the switching device with the minimum removal time length as a target switching device, obtaining a time slot and a priority corresponding to the tripping command, packaging the tripping command into an original data frame by adopting a 5G communication protocol, and sending the original data frame to a server; and embedding the identification field of the time slot and the identification field of the priority into a protocol header of the original data frame, generating a target data frame, sending the target data frame to a target switching device through a 5G channel, and controlling the target switching device to cut off a fault node in the power distribution network according to the target data frame. According to the invention, the fault node removal speed can be improved.

Description

Methods, devices, equipment, and media for power distribution network fault isolation based on 5G technology Technical Field

[0001] This application relates to the field of power technology, and in particular to a method, apparatus, equipment and medium for fault clearing in power distribution networks based on 5G technology. Background Technology

[0002] With the large-scale integration of distributed renewable energy sources such as solar and wind power into the power distribution network, the network's operational status exhibits significant volatility and uncertainty. Against this backdrop, the power distribution network is prone to fault nodes.

[0003] However, current power distribution network protection mechanisms struggle to isolate faulty nodes within the network because they cannot pinpoint the target switching device. This increases the time required to isolate faulty nodes, causing previously manageable outages to expand and severely impacting users' normal power supply. Therefore, finding a way to isolate faulty nodes within the power distribution network is a pressing technical problem that needs to be solved. Summary of the Invention

[0004] This application provides a method, apparatus, equipment, and medium for clearing faults in power distribution networks based on 5G technology, in order to solve the aforementioned technical problem of how to clear faulty nodes in power distribution networks.

[0005] In a first aspect, embodiments of this application provide a distribution network fault clearing method based on 5G technology, applied to an electronic device. The electronic device is connected to a feeder terminal, which is installed on a feeder node. The distribution network fault clearing method includes: sending a collection command to the feeder terminal; receiving a set of sampled values ​​returned by the feeder terminal according to the collection command; the set of sampled values ​​refers to the set of values ​​obtained after the feeder terminal samples the current signal of the feeder node at a preset sampling frequency; acquiring multiple sampled values ​​from the set of sampled values; and generating the amplitude of the fundamental component and the phase angle of the fundamental component in the current signal of the feeder node according to the multiple sampled values ​​and a preset generation model; when the amplitude of the fundamental component in the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component in the current signal of the feeder node is... When the phase angle is greater than a preset angle, the topology matrix and fault information matrix of the distribution network are obtained. The topology matrix and fault information matrix are coupled and operated to generate a fault location matrix. The fault location matrix is ​​used to locate the fault node of the distribution network and the multiple switching devices corresponding to the fault node. The tripping time of each switching device is generated by a preset estimation model. The switching device with the shortest tripping time is selected as the target switching device. The time slot and priority corresponding to the tripping command are obtained. The tripping command is encapsulated into a raw data frame using the 5G communication protocol. The time slot identification field and the priority identification field are embedded in the protocol header of the raw data frame to generate a target data frame. The target data frame is sent to the target switching device through the 5G channel. The target switching device is controlled to trip the fault node in the distribution network according to the target data frame.

[0006] In one possible implementation of the first aspect, the step of sending a data acquisition command to the feeder terminal and receiving a set of sampled values ​​returned by the feeder terminal according to the data acquisition command, wherein the set of sampled values ​​refers to the set of values ​​obtained by the feeder terminal after sampling the current signal of the feeder node at a preset sampling frequency, includes: sending a data acquisition command to the feeder terminal via a transmission link, wherein the data acquisition command includes data acquisition period and data format parameters; and receiving a set of sampled values ​​returned by the feeder terminal according to the data acquisition command via a transmission link, wherein the set of sampled values ​​refers to the set of values ​​obtained by the feeder terminal after sampling the current signal of the feeder node at a preset sampling frequency.

[0007] In one possible implementation of the first aspect, the step of generating the tripping time of each switching device through a preset estimation model, selecting the switching device with the shortest tripping time as the target switching device, obtaining the time slot and priority corresponding to the tripping command, encapsulating the tripping command into a raw data frame using the 5G communication protocol, embedding the time slot identifier field and the priority identifier field into the protocol header of the raw data frame to generate a target data frame, sending the target data frame to the target switching device through the 5G channel, and controlling the target switching device to trip the fault node in the distribution network according to the target data frame includes: generating the tripping time of each switching device through a preset estimation model, selecting the switching device with the shortest tripping time as the target switching device, obtaining the time slot and priority corresponding to the tripping command, encapsulating the tripping command into a raw data frame using the 5G communication protocol, embedding the time slot identifier field and the priority identifier field into the protocol header of the raw data frame to generate a target data frame, sending the target data frame to the target switching device through the 5G channel, and controlling the target switching device to trip the fault node in the distribution network according to the target data frame. For the target switching device, obtain the time slot and priority corresponding to the trip command, encapsulate the trip command into a raw data frame using the 5G communication protocol, embed the time slot identifier field and priority identifier field into the protocol header of the raw data frame to generate a target data frame; copy the target data frame into two identical data frames, namely the first data frame and the second data frame; construct a first 5G channel and a second 5G channel, send the first data frame to the target switching device through the first 5G channel, and send the second data frame to the target switching device through the second 5G channel, and control the target switching device to disconnect the fault node in the distribution network according to the data frame that arrives first in the first and second data frames.

[0008] In one possible implementation of the first aspect, after generating the tripping time of each switching device through a preset estimation model, selecting the switching device with the shortest tripping time as the target switching device, obtaining the time slot and priority corresponding to the tripping command, encapsulating the tripping command into a raw data frame using the 5G communication protocol, embedding the identifier field of the time slot and the identifier field of the priority into the protocol header of the raw data frame, generating a target data frame, sending the target data frame to the target switching device through the 5G channel, and controlling the target switching device to trip the fault node in the distribution network according to the target data frame, the distribution network fault tripping method includes: receiving the execution message returned by the target switching device and storing the execution message in a preset storage area.

[0009] In one possible implementation of the first aspect, the generative model is defined as follows: ; ; ; ;

[0010] This represents the imaginary part of the fundamental component in the current signal at the feeder node; This represents the real part of the fundamental component in the current signal at the feeder node; Indicates the total number of sampled values; Indicates the sequence number of the sampled value; Indicates the first Each sample value.

[0011] A mathematical constant, The value is 3.14159; This represents the amplitude of the fundamental component in the current signal at the feeder node; This represents the phase angle of the fundamental component in the current signal at the feeder node.

[0012] In one possible implementation of the first aspect, the estimation model is defined as follows: ;in, For the first The disconnection time of the first switching device, the first The longer the disconnection time of the first switching device, the more it indicates that the first... The longer the total time required for a switching device to isolate a faulty node; the longer the first The shorter the cut-off time of the first switching device, the more it indicates that the first... The smaller the total time required for a single switching device to isolate a faulty node; For the first Transmission delay of a switching device For the first The decision-making time of the decision module corresponding to each switching device. For the first Tripping execution time of each switching device.

[0013] In one possible implementation of the first aspect, the preset sampling frequency includes a 3.2 kHz sampling frequency and a 3.3 kHz sampling frequency.

[0014] Secondly, this application provides a power distribution network fault clearing device based on 5G technology, applied to an electronic device. The electronic device is connected to a feeder terminal, which is installed on a feeder node. The device includes: a receiving module, used to send a collection command to the feeder terminal and receive a set of sampled values ​​returned by the feeder terminal according to the collection command; the set of sampled values ​​refers to the set of values ​​obtained after the feeder terminal samples the current signal of the feeder node at a preset sampling frequency; a first acquisition module, used to acquire multiple sampled values ​​from the set of sampled values, and generate the amplitude of the fundamental component and the phase angle of the fundamental component in the current signal of the feeder node based on the multiple sampled values ​​and a preset generation model; and a second acquisition module, used to, when the amplitude of the fundamental component in the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component in the current signal of the feeder node is... When the phase angle is greater than a preset angle, the topology matrix and fault information matrix of the distribution network are obtained; the generation module is used to couple the topology matrix and fault information matrix to generate a fault location matrix, and use the fault location matrix to locate the fault node of the distribution network and the multiple switching devices corresponding to the fault node; the control module is used to generate the tripping time of each switching device through a preset estimation model, select the switching device with the shortest tripping time as the target switching device, obtain the time slot and priority corresponding to the tripping command, encapsulate the tripping command into a raw data frame using the 5G communication protocol, embed the time slot identification field and the priority identification field into the protocol header of the raw data frame to generate a target data frame, and send the target data frame to the target switching device through the 5G channel, controlling the target switching device to trip the fault node in the distribution network according to the target data frame.

[0015] Thirdly, embodiments of this application provide an electronic device, including 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 power distribution network fault clearing method described in the first aspect above.

[0016] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the power distribution network fault clearing method described in the first aspect above.

[0017] Fifthly, embodiments of this application provide a computer program product that, when run on an electronic device, causes the electronic device to execute the power distribution network fault clearing method described in the first aspect.

[0018] The beneficial effects of this application embodiment are as follows: First, by using a preset estimation model, the tripping time of each switching device is generated, and the switching device with the shortest tripping time is selected as the target switching device. The time slot and priority corresponding to the tripping command are obtained, and the tripping command is encapsulated into an original data frame using the 5G communication protocol. The identifier field of the time slot and the identifier field of the priority are embedded in the protocol header of the original data frame to generate a target data frame. The target data frame is sent to the target switching device through the 5G channel, and the target switching device is controlled to trip the fault node in the distribution network according to the target data frame. Since the target switching device is the switching device with the shortest tripping time, controlling the target switching device to trip the fault node in the distribution network according to the target data frame is beneficial to improving the tripping speed of the fault node. Second, by embedding the identifier field of the time slot and the identifier field of the priority field into the protocol header of the original data frame to generate the target data frame, the target data frame will be transmitted first, which will reduce the time for the target switching device to trip the fault node in the distribution network according to the target data frame, thus further improving the tripping speed of the fault node. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 is an application scenario diagram of the power distribution network fault clearing method provided in the embodiment of this application; Figure 2 is a flowchart of the power distribution network fault clearing method provided in the embodiment of this application; Figure 3 is a flowchart of the display list processing results provided in the embodiment of this application; Figure 4 is a schematic block diagram of the power distribution network fault clearing device provided in the embodiment of this application; Figure 5 is a structural schematic diagram of the electronic device provided in the embodiment of this application. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0022] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0023] It should be understood that in the description of this application and the appended claims, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "comprising," "including," "having," and their variations all mean "including but not limited to," unless otherwise specifically emphasized.

[0024] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0026] The power distribution network fault clearing method provided in this application can be applied to electronic devices such as servers, mobile phones, tablets, wearable devices, vehicle-mounted devices, augmented reality (AR) / virtual reality (VR) devices, laptops, ultra-mobile personal computers (UMPCs), netbooks, and personal digital assistants (PDAs). This application does not impose any restrictions on the specific type of electronic device.

[0027] Please refer to Figure 1, which is an application scenario diagram of the power distribution network fault clearing method provided in the embodiment of this application. The details are as follows: The electronic device sends a data acquisition instruction to the feeder terminal through the transmission link. The data acquisition instruction includes data acquisition period and data format parameters. Through the transmission link, the electronic device receives the set of sampled values ​​returned by the feeder terminal according to the data acquisition instruction. The set of sampled values ​​refers to the set of values ​​obtained by the feeder terminal after sampling the current signal of the feeder node at a preset sampling frequency.

[0028] In this embodiment of the application, the electronic device can quickly compare and analyze the current signal of the feeder node with normal data, and can quickly locate the fault point once abnormal current fluctuations occur.

[0029] Please refer to Figure 2, which is a flowchart illustrating the power distribution network fault clearing method provided in this application embodiment. This method can be applied to electronic devices, which are connected to feeder terminals, and the feeder terminals are installed on feeder nodes.

[0030] As shown in Figure 2, the power distribution network fault clearing method provided in this application includes the following steps, detailed below: S201, sending a data acquisition command to the feeder terminal and receiving a set of sampled values ​​returned by the feeder terminal according to the data acquisition command. The set of sampled values ​​refers to the set of values ​​obtained by the feeder terminal after sampling the current signal of the feeder node at a preset sampling frequency; wherein, the preset sampling frequency includes a 3.2kHz sampling frequency and a 3.3kHz sampling frequency.

[0031] Among them, the feeder node is the junction and connection point of power equipment such as main feeder, branch feeder, distribution transformer, ring main unit, circuit breaker and user incoming line. Stable transmission of power between different lines and equipment is achieved through connectors such as conductors and terminal blocks.

[0032] S202, acquire multiple sampled values ​​from the sampled value set, and based on the multiple sampled values ​​and a preset generation model, generate the amplitude of the fundamental component and the phase angle of the fundamental component in the current signal of the feeder node; wherein, the generation model is defined as follows: ; ; ; ;

[0033] This represents the imaginary part of the fundamental component in the current signal at the feeder node; This represents the real part of the fundamental component in the current signal at the feeder node; Indicates the total number of sampled values; Indicates the sequence number of the sampled value; Indicates the first Each sample value.

[0034] A mathematical constant, The value is 3.14159; This represents the amplitude of the fundamental component in the current signal at the feeder node; This represents the phase angle of the fundamental component in the current signal at the feeder node.

[0035] S203, when the amplitude of the fundamental component in the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component in the current signal of the feeder node is greater than a preset angle, the topology matrix and fault information matrix of the distribution network are obtained; when the amplitude of the fundamental component in the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component in the current signal of the feeder node is greater than a preset angle, the topology matrix and fault information matrix of the distribution network are obtained, including: when the amplitude of the fundamental component in the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component in the current signal of the feeder node is greater than a preset angle, the distribution automation system is accessed, and the topology matrix and fault information matrix of the distribution network are obtained from the distribution automation system, wherein the distribution automation system is the automation system of the distribution network.

[0036] When a distribution network experiences faults such as short circuits or severe overloads, the line impedance changes drastically, the amplitude of the fundamental component of the current rises abruptly, and the phase relationship between the fundamental voltage and current deviates significantly from the normal range. Therefore, when the amplitude of the fundamental component in the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component is greater than a preset angle, it indicates that a short circuit has occurred in the distribution network, allowing the acquisition of the distribution network's topology matrix and fault information matrix.

[0037] S204, perform coupled operation on the topology matrix and the fault information matrix to generate a fault location matrix. Use the fault location matrix to locate the fault node of the distribution network and the multiple switching devices corresponding to the fault node. For example, a coupled model is used to perform coupled operation on the topology matrix and the fault information matrix to generate a fault location matrix. Use the fault location matrix to locate the fault node of the distribution network and the multiple switching devices corresponding to the fault node.

[0038] The coupling model is: ; Represents a topological matrix; Represents the fault information matrix. This represents the fault location matrix.

[0039] It can construct a fault location matrix to directly locate faulty lines and nodes, with a location time of no more than 50ms.

[0040] S205 generates the tripping time for each switching device through a preset estimation model, selects the switching device with the shortest tripping time as the target switching device, obtains the time slot and priority corresponding to the tripping command, encapsulates the tripping command into a raw data frame using the 5G communication protocol, embeds the time slot identifier field and the priority identifier field into the protocol header of the raw data frame, generates a target data frame, and sends the target data frame to the target switching device through the 5G channel, controlling the target switching device to trip the fault node in the distribution network according to the target data frame.

[0041] Among them, the 5G communication protocol is the protocol of the fifth generation of mobile communication technology, and the 5G channel is a data transmission channel built based on the 5G communication protocol.

[0042] Among them, disconnecting the faulty node in the distribution network means isolating the faulty node from the distribution network, which can block the propagation of fault current, prevent the accident from escalating, and create conditions for subsequent power restoration.

[0043] Specifically, the time slot identifier field and the priority identifier field are embedded in the protocol header of the original data frame to generate the target data frame. The target data frame will be transmitted first, which will reduce the time for the target switching device to disconnect the fault node in the distribution network based on the target data frame.

[0044] For ease of explanation, the following example is given: When encapsulating a trip command into a raw data frame using the 5G communication protocol, the identifier field of the time slot is assigned the value 0001, and the identifier fields of 0001 and priority are embedded into the protocol header of the raw data frame to generate the target data frame.

[0045] When the 5G base station scheduler receives the target data frame, it identifies the target data frame and, if it has a priority identifier field, schedules the target data frame to the time-frequency resource corresponding to time slot 0001. This skips the queuing process of ordinary data, and the target data frame will be transmitted first, thereby reducing the time for the target switching device to cut off the fault node in the distribution network based on the target data frame.

[0046] The method for clearing faults in the distribution network includes: generating the tripping time for each switching device using a preset estimation model; selecting the switching device with the shortest tripping time as the target switching device; obtaining the time slot and priority corresponding to the tripping command; encapsulating the tripping command into a raw data frame using the 5G communication protocol; embedding the identifier field of the time slot and the identifier field of the priority into the protocol header of the raw data frame to generate a target data frame; sending the target data frame to the target switching device through the 5G channel; and controlling the target switching device to trip the fault node in the distribution network according to the target data frame.

[0047] The estimation model is defined as follows: ;in, For the first The disconnection time of the first switching device, the first The longer the disconnection time of the first switching device, the more it indicates that the first... The longer the total time required for a switching device to isolate a faulty node; the longer the first The shorter the cut-off time of the first switching device, the more it indicates that the first... The smaller the total time required for a single switching device to isolate a faulty node; For the first Transmission delay of a switching device For the first The decision-making time of the decision module corresponding to each switching device. For the first Tripping execution time of each switching device.

[0048] The beneficial effects of this application embodiment are as follows: First, by using a preset estimation model, the tripping time of each switching device is generated, and the switching device with the shortest tripping time is selected as the target switching device. The time slot and priority corresponding to the tripping command are obtained, and the tripping command is encapsulated into an original data frame using the 5G communication protocol. The identifier field of the time slot and the identifier field of the priority are embedded in the protocol header of the original data frame to generate a target data frame. The target data frame is sent to the target switching device through the 5G channel, and the target switching device is controlled to trip the fault node in the distribution network according to the target data frame. Since the target switching device is the switching device with the shortest tripping time, controlling the target switching device to trip the fault node in the distribution network according to the target data frame is beneficial to improving the tripping speed of the fault node. Second, by embedding the identifier field of the time slot and the identifier field of the priority field into the protocol header of the original data frame to generate the target data frame, the target data frame will be transmitted first, which will reduce the time for the target switching device to trip the fault node in the distribution network according to the target data frame, thus further improving the tripping speed of the fault node.

[0049] Please refer to Figure 3, which is a flowchart of the display list processing results provided in the embodiment of this application, and is described in detail below: S301, the tripping time of each switching device is generated through a preset estimation model, the switching device with the shortest tripping time is selected as the target switching device, the time slot and priority corresponding to the tripping command are obtained, the tripping command is encapsulated into an original data frame using the 5G communication protocol, the identifier field of the time slot and the identifier field of the priority are embedded in the protocol header of the original data frame, and a target data frame is generated; S302, the target data frame is copied into two identical data frames, which are the first data frame and the second data frame, respectively; S303, a first 5G channel and a second 5G channel are constructed, the first data frame is sent to the target switching device through the first 5G channel, and the second data frame is sent to the target switching device through the second 5G channel, and the target switching device is controlled to trip the fault node in the distribution network according to the data frame that arrives first in the first data frame and the second data frame.

[0050] For ease of explanation, the following example illustrates the process: For instance, feeder terminals are installed at each feeder node, configured with current, voltage, and zero-sequence current acquisition modules; a first 5G channel and a second 5G channel are established, which are different 5G channels. The first data frame and the second data frame are transmitted to the target switching device via the first and second 5G channels, respectively. The target switching device compares the timestamp with the frame number, prioritizing parsing the first arriving data frame. If the first data frame arrives first, it is parsed, and the second data frame is discarded. If the second data frame arrives first, the first data frame is discarded.

[0051] In this embodiment, the target data frame is copied into two identical data frames, namely the first data frame and the second data frame. The first data frame is sent to the target switching device through the first 5G channel, and the second data frame is sent to the target switching device through the second 5G channel. The first 5G channel and the second 5G channel constitute two independent 5G channels. When the first 5G channel is interrupted due to signal obstruction, frequency band interference or equipment failure, the second 5G channel can seamlessly take over, which can improve the stability of the target data frame.

[0052] Corresponding to the distribution network fault clearing method described in the above embodiments, please refer to Figure 4. Figure 4 is a schematic block diagram of the distribution network fault clearing device provided in the embodiments of this application. The distribution network fault clearing device 400 shown in Figure 4 can be applied to the electronic device in the application scenario diagram shown in Figure 1. The distribution network fault clearing device 400 shown in Figure 4 will be described in detail below using an electronic device as an example. The distribution network fault clearing device 400 may include a receiving module 401, a first acquisition module 402, a second acquisition module 403, a generation module 404, and a control module 405.

[0053] The receiving module 401 is used to send a collection command to the feeder terminal and receive a set of sampled values ​​returned by the feeder terminal according to the collection command. The set of sampled values ​​refers to the set of values ​​obtained after the feeder terminal samples the current signal of the feeder node at a preset sampling frequency. The first acquisition module 402 is used to acquire multiple sampled values ​​in the set of sampled values ​​and generate the amplitude and phase angle of the fundamental component of the current signal of the feeder node based on the multiple sampled values ​​and a preset generation model. The second acquisition module 403 is used to acquire the topology matrix and fault information matrix of the distribution network when the amplitude of the fundamental component of the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component of the current signal of the feeder node is greater than a preset angle. The generation module... Module 404 is used to couple the topology matrix and the fault information matrix to generate a fault location matrix. The fault location matrix is ​​used to locate the fault node in the distribution network and the multiple switching devices corresponding to the fault node. Module 405 is used to generate the tripping time of each switching device through a preset estimation model, select the switching device with the shortest tripping time as the target switching device, obtain the time slot and priority corresponding to the tripping command, encapsulate the tripping command into a raw data frame using the 5G communication protocol, embed the time slot identifier field and the priority identifier field into the protocol header of the raw data frame to generate a target data frame, and send the target data frame to the target switching device through the 5G channel to control the target switching device to trip the fault node in the distribution network according to the target data frame.

[0054] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0055] The beneficial effects of this application embodiment are as follows: First, by using a preset estimation model, the tripping time of each switching device is generated, and the switching device with the shortest tripping time is selected as the target switching device. The time slot and priority corresponding to the tripping command are obtained, and the tripping command is encapsulated into an original data frame using the 5G communication protocol. The identifier field of the time slot and the identifier field of the priority are embedded in the protocol header of the original data frame to generate a target data frame. The target data frame is sent to the target switching device through the 5G channel, and the target switching device is controlled to trip the fault node in the distribution network according to the target data frame. Since the target switching device is the switching device with the shortest tripping time, controlling the target switching device to trip the fault node in the distribution network according to the target data frame is beneficial to improving the tripping speed of the fault node. Second, by embedding the identifier field of the time slot and the identifier field of the priority field into the protocol header of the original data frame to generate the target data frame, the target data frame will be transmitted first, which will reduce the time for the target switching device to trip the fault node in the distribution network according to the target data frame, thus further improving the tripping speed of the fault node.

[0056] Please refer to Figure 5, which is a schematic diagram of the structure of the electronic device provided in the embodiment of this application.

[0057] As shown in FIG5, the electronic device 2 of FIG5 includes: at least one processor 20, a memory 21, and a computer program 22 stored in the memory 21 and executable on the at least one processor 20, wherein the processor 20 executes the computer program 22 to implement the steps in any of the above method embodiments.

[0058] The electronic device 2 may include, but is not limited to, processor 20 and memory 21. Those skilled in the art will understand that FIG5 is merely an example of electronic device 2 and does not constitute a limitation on electronic device 2. It may include more or fewer components than shown, or combine certain components, or different components, such as input / output devices, network access devices, etc.

[0059] The processor 20 is used to run a computer program 22 stored in the memory 21, and performs the following steps when executing the computer program 22: sending a data acquisition command to the feeder terminal; receiving a set of sampled values ​​returned by the feeder terminal according to the data acquisition command, wherein the set of sampled values ​​refers to the set of values ​​obtained after the feeder terminal samples the current signal of the feeder node at a preset sampling frequency; acquiring multiple sampled values ​​from the set of sampled values; generating the amplitude of the fundamental component and the phase angle of the fundamental component in the current signal of the feeder node according to the multiple sampled values ​​and a preset generation model; when the amplitude of the fundamental component in the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component in the current signal of the feeder node is greater than a preset angle, acquiring the matching... The system generates a topology matrix and a fault information matrix for the power grid. These matrices are coupled to generate a fault location matrix, which is used to locate faulty nodes and their corresponding switching devices in the distribution network. A pre-defined estimation model is used to generate the tripping time for each switching device. The switching device with the shortest tripping time is selected as the target switching device. The time slot and priority of the tripping command are obtained. The tripping command is encapsulated into a raw data frame using the 5G communication protocol. The time slot identifier and priority identifier are embedded in the protocol header of the raw data frame to generate a target data frame. This target data frame is then sent to the target switching device via the 5G channel, controlling the target switching device to trip the faulty node in the distribution network according to the target data frame.

[0060] The processor 20 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors, field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0061] In some embodiments, the memory 21 may be an internal storage unit of the electronic device 2, such as a hard disk or memory of the electronic device 2. In other embodiments, the memory 21 may be an external storage device of the electronic device 2, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc. equipped on the electronic device 2.

[0062] Furthermore, the memory 21 may include both internal storage units and external storage devices of the electronic device 2. The memory 21 is used to store the operating system, applications, boot loader, data, and other programs, such as the program code of the computer program. The memory 21 can also be used to temporarily store data that has been output or will be output.

[0063] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0064] This application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps described in the various method embodiments above.

[0065] The computer-readable storage medium may also be an external storage device of the power distribution network fault isolation device or electronic device, such as a plug-in hard drive, smart media card (SMC), secure digital (SD) card, flash card, or non-transitory computer-readable storage medium equipped on the power distribution network fault isolation device or electronic device.

[0066] Since the computer program stored in the computer-readable storage medium can execute any of the 5G-based distribution network fault clearing methods provided in the embodiments of this application, the computer-readable storage medium can achieve the beneficial effects that any of the 5G-based distribution network fault clearing methods provided in the embodiments of this application can achieve, as detailed in the preceding embodiments, and will not be repeated here.

[0067] This application provides a computer program product that, when run on an electronic device, causes the electronic device to execute the above-described power distribution network fault clearing method.

[0068] The computer program, loaded onto an electronic device, can perform the following steps: sending a data acquisition command to the feeder terminal; receiving a set of sampled values ​​returned by the feeder terminal according to the acquisition command (the set of sampled values ​​refers to the set of values ​​obtained after the feeder terminal samples the current signal of the feeder node at a preset sampling frequency); acquiring multiple sampled values ​​from the set; generating the amplitude and phase angle of the fundamental component of the current signal of the feeder node based on the multiple sampled values ​​and a preset generation model; and acquiring the topology matrix and fault information matrix of the distribution network when the amplitude of the fundamental component of the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component is greater than a preset angle. The topology matrix and fault information matrix are coupled and operated to generate a fault location matrix. The fault location matrix is ​​used to locate the fault nodes in the distribution network and the multiple switching devices corresponding to the fault nodes. The tripping time of each switching device is generated by a preset estimation model. The switching device with the shortest tripping time is selected as the target switching device. The time slot and priority corresponding to the tripping command are obtained. The tripping command is encapsulated into a raw data frame using the 5G communication protocol. The time slot identification field and the priority identification field are embedded in the protocol header of the raw data frame to generate a target data frame. The target data frame is sent to the target switching device through the 5G channel. The target switching device is controlled to trip the fault nodes in the distribution network according to the target data frame.

[0069] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.

[0070] Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium includes: an entity or device for carrying computer program code to an electronic device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium.

[0071] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0072] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for clearing distribution network faults based on 5G technology, characterized in that, This method, applied to electronic devices connected to feeder terminals and installed on feeder nodes, includes the following steps: sending a data acquisition command to the feeder terminal; receiving a set of sampled values ​​returned by the feeder terminal according to the acquisition command; the set of sampled values ​​refers to the set of values ​​obtained after the feeder terminal samples the current signal of the feeder node at a preset sampling frequency; acquiring multiple sampled values ​​from the set; and generating the amplitude of the fundamental component and the phase angle of the fundamental component in the current signal of the feeder node based on the multiple sampled values ​​and a preset generation model; and obtaining the distribution network fault clearing method when the amplitude of the fundamental component in the current signal of the feeder node is greater than a preset amplitude and the phase angle of the fundamental component is greater than a preset angle. The system employs a topology matrix and a fault information matrix. These matrices are coupled to generate a fault location matrix, which is used to locate faulty nodes in the distribution network and their corresponding switching devices. A pre-defined estimation model is used to generate the tripping time for each switching device. The switching device with the shortest tripping time is selected as the target switching device. The time slot and priority of the tripping command are obtained. The tripping command is encapsulated into a raw data frame using the 5G communication protocol. The identifier fields of the time slot and priority are embedded in the protocol header of the raw data frame to generate a target data frame. This target data frame is then sent to the target switching device via the 5G channel, controlling the target switching device to trip the faulty node in the distribution network according to the target data frame.

2. The method for clearing distribution network faults according to claim 1, characterized in that, The process of sending a data acquisition command to the feeder terminal and receiving a set of sampled values ​​returned by the feeder terminal according to the data acquisition command, wherein the set of sampled values ​​refers to the set of values ​​obtained by the feeder terminal after sampling the current signal of the feeder node at a preset sampling frequency, includes: sending a data acquisition command to the feeder terminal through a transmission link, wherein the data acquisition command includes data acquisition period and data format parameters; and receiving a set of sampled values ​​returned by the feeder terminal according to the data acquisition command through a transmission link, wherein the set of sampled values ​​refers to the set of values ​​obtained by the feeder terminal after sampling the current signal of the feeder node at a preset sampling frequency.

3. The method for clearing distribution network faults according to claim 1, characterized in that, The process involves generating the tripping time for each switching device using a preset estimation model, selecting the switching device with the shortest tripping time as the target switching device, obtaining the time slot and priority corresponding to the tripping command, encapsulating the tripping command into a raw data frame using the 5G communication protocol, embedding the time slot identifier field and priority identifier field into the protocol header of the raw data frame to generate a target data frame, and sending the target data frame to the target switching device via the 5G channel. The target switching device is then controlled to trip the faulty node in the distribution network according to the target data frame. This includes: generating the tripping time for each switching device using a preset estimation model, selecting the switching device with the shortest tripping time as the target switching device, obtaining the time slot and priority corresponding to the tripping command, encapsulating the tripping command into a raw data frame using the 5G communication protocol, embedding the time slot identifier field and priority identifier field into the protocol header of the raw data frame to generate a target data frame, and sending the target data frame to the target switching device via the 5G channel. The time slot and priority corresponding to the trip command are retrieved. The trip command is encapsulated into a raw data frame using the 5G communication protocol. The identifier fields of the time slot and priority are embedded into the protocol header of the raw data frame to generate a target data frame. The target data frame is copied into two identical data frames, namely the first data frame and the second data frame. A first 5G channel and a second 5G channel are constructed. The first data frame is sent to the target switching device through the first 5G channel, and the second data frame is sent to the target switching device through the second 5G channel. The target switching device is controlled to disconnect the fault node in the distribution network according to the data frame that arrives first in the first and second data frames.

4. The method for clearing distribution network faults according to claim 1, characterized in that, The method involves generating the tripping time for each switching device using a preset estimation model, selecting the switching device with the shortest tripping time as the target switching device, obtaining the time slot and priority corresponding to the tripping command, encapsulating the tripping command into a raw data frame using the 5G communication protocol, embedding the time slot identifier field and the priority identifier field into the protocol header of the raw data frame to generate a target data frame, sending the target data frame to the target switching device through the 5G channel, and controlling the target switching device to trip the fault node in the distribution network according to the target data frame. The method for tripping the distribution network fault includes receiving the execution message returned by the target switching device and storing the execution message in a preset storage area.

5. The method for clearing distribution network faults according to claim 1, characterized in that, Generative models are defined as follows: ； ； ； ； This represents the imaginary part of the fundamental component in the current signal at the feeder node; This represents the real part of the fundamental component in the current signal at the feeder node; Indicates the total number of sampled values; Indicates the sequence number of the sampled value; Indicates the first Each sample value; A mathematical constant, The value is 3.14159; This represents the amplitude of the fundamental component in the current signal at the feeder node; This represents the phase angle of the fundamental component in the current signal at the feeder node.

6. The method for clearing distribution network faults according to claim 1, characterized in that, The estimation model is defined as follows: ;in, For the first The disconnection time of the first switching device, the first The longer the disconnection time of the first switching device, the more it indicates that the first... The longer the total time required for a switching device to isolate a faulty node; the longer the first The shorter the cut-off time of the first switching device, the more it indicates that the first... The smaller the total time required for a single switching device to isolate a faulty node; For the first Transmission delay of a switching device For the first The decision-making time of the decision module corresponding to each switching device. For the first Tripping execution time of each switching device.

7. The method for clearing distribution network faults according to claim 1, characterized in that, The preset sampling frequencies include 3.2kHz and 3.3kHz.

8. A power distribution network fault clearing device based on 5G technology, characterized in that, This system is applied to electronic devices connected to feeder terminals, which are installed on feeder nodes. It includes: a receiving module for sending acquisition commands to the feeder terminal and receiving a set of sampled values ​​returned by the feeder terminal according to the acquisition commands; the set of sampled values ​​refers to the set of values ​​obtained after the feeder terminal samples the current signal of the feeder node at a preset sampling frequency; a first acquisition module for acquiring multiple sampled values ​​from the sampled value set and generating the amplitude and phase angle of the fundamental component of the current signal of the feeder node based on the multiple sampled values ​​and a preset generation model; and a second acquisition module for acquiring the distribution network's... The system comprises a topology matrix and a fault information matrix; a generation module, which couples the topology matrix and the fault information matrix to generate a fault location matrix, thereby locating the fault node in the distribution network and the corresponding multiple switching devices; and a control module, which generates the tripping time for each switching device using a preset estimation model, selects the switching device with the shortest tripping time as the target switching device, obtains the time slot and priority corresponding to the tripping command, encapsulates the tripping command into a raw data frame using the 5G communication protocol, embeds the time slot identifier field and the priority identifier field into the protocol header of the raw data frame to generate a target data frame, sends the target data frame to the target switching device through the 5G channel, and controls the target switching device to trip the fault node in the distribution network according to the target data frame.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the power distribution network fault clearing method as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the power distribution network fault clearing method as described in any one of claims 1 to 7.

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