Direction traveling wave-based distribution line fault positioning method, system and device

Abstract

The invention provides a distribution line fault positioning method, system and device based on directional traveling waves, a distribution line is provided with a plurality of monitoring terminals, and the method comprises the following steps: numbering the plurality of monitoring terminals, and grouping the plurality of monitoring terminals to form a plurality of monitoring groups; determining a main terminal of each monitoring group according to the serial number of the monitoring terminal in each monitoring group; determining direction traveling waves on the distribution line according to the current traveling waves and the voltage traveling waves; determining a fault section of the distribution line according to the type of the direction traveling wave of the main terminal in each monitoring group and the types of the direction traveling waves of all the monitoring terminals except the main terminal in each monitoring group; and determining a fault position according to the initial traveling wave time information detected by all the monitoring terminals of the fault section. The specific position of the fault is determined by using the traveling wave when the distribution line breaks down, the accuracy and economy of distribution line fault positioning are improved, the fault finding time is further shortened, and the power supply reliability of the distribution line is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of power system fault detection and relay protection, and in particular to a distribution line fault location method, system and device based on directional traveling waves. Background Art

[0002] The distribution network is an important hub connecting the transmission link and power users, and its power supply reliability is directly related to the user experience. The distribution network double-end traveling wave ranging has high accuracy and is less affected by factors such as line operation mode, transition resistance, transformer conversion error, and uneven distribution of line parameters along the corridor. After a fault occurs, the fault can be quickly located, reducing line inspection time.

[0003] At present, many manufacturers have proposed a two-terminal traveling wave ranging solution for distribution networks. The distribution network traveling wave ranging system based on the principle of two-terminal ranging consists of three parts: monitoring terminal, master station and power system synchronous clock. The monitoring terminal is installed on the distribution line and is responsible for the collection and extraction of current, voltage and traveling wave signals, the recording of the arrival time of the initial traveling wave of the fault, and the communication with the master station. The monitoring terminal consists of a current transformer, a voltage transformer, a data acquisition and processing unit, a CPU (Central Processing Unit), a GPS (Global Positioning System) and a communication unit. The master station provides fault data display, analysis and ranging functions. The power system synchronous clock provides accurate time information for the system.

[0004] The traveling wave ranging master station is responsible for the display, analysis and ranging functions of fault data. At present, most manufacturers deploy centralized master stations, and all terminal data is uploaded to the centralized master station, which results in the centralization of master station data, heavy burden and large traffic. There are coordination problems between the centralized master station and the existing distribution automation master station. One way is to deploy the centralized master station separately from the existing distribution automation master station. The disadvantage of this method is that the hardware resources of the two systems cannot be reused, which increases investment; the terminal needs to communicate with the two master stations. Another way is to integrate the centralized ranging master station into the existing distribution automation master station. The disadvantage of this method is that the existing distribution automation master station needs to be upgraded and renovated, and it usually involves coordination and cooperation between different software from different manufacturers. Therefore, the deployment and access of the traveling wave ranging master station need to be considered in practical applications. Summary of the invention

[0005] The present invention aims to at least solve the problem of economical and accurate fault location of distribution lines.

[0006] Therefore, the first object of the present invention is to provide a distribution line fault location method based on directional traveling waves.

[0007] The second object of the present invention is to provide a distribution line fault location system based on directional traveling waves.

[0008] The third object of the present invention is to provide a distribution line fault location device based on directional traveling waves.

[0009] A fourth object of the present invention is to provide a storage medium.

[0010] The technical solution of the first aspect of the present invention provides a distribution line fault location method based on directional traveling waves. Multiple monitoring terminals are arranged on the distribution line. The distribution line fault location method based on directional traveling waves includes: numbering the multiple monitoring terminals, and grouping the multiple monitoring terminals to form multiple monitoring groups; determining the main terminal of each monitoring group according to the number of the monitoring terminal in each monitoring group; determining the directional traveling waves on the distribution line according to the current traveling waves and the voltage traveling waves; determining the fault section of the distribution line according to the type of directional traveling waves of the main terminal in each monitoring group, and the types of directional traveling waves of all monitoring terminals except the main terminal in each monitoring group; and determining the fault location according to the initial traveling wave time information detected by all monitoring terminals in the fault section.

[0011] According to the distribution line fault location method based on directional traveling waves provided by the present invention, by setting multiple monitoring terminals on the distribution line, the specific location of the fault can be determined by using multiple monitoring terminals and the traveling waves when the distribution line fails, thereby solving the problem of accurate positioning of the distribution network, further shortening the fault finding time, and improving the power supply reliability of the distribution line. Specifically, multiple monitoring terminals can be numbered and grouped to form multiple monitoring groups, and then the main terminal in each monitoring group can be determined according to the number of the monitoring terminal, so that the main terminal in each monitoring group can be used to communicate with the monitoring terminal in the monitoring group. At this time, after the fault section of the distribution line is determined according to the type of directional traveling waves of the main terminal in each monitoring group and the type of directional traveling waves of the monitoring terminal in each monitoring group, it is not necessary to make all the monitoring terminals on the distribution line communicate with the centralized master station, reducing the burden of the centralized master station and solving the problem of large communication data volume of the distribution network centralized ranging master station. At the same time, since the present application can also use the initial traveling wave time information detected by all monitoring terminals in the fault section to accurately locate the fault location, it is convenient for the staff to quickly repair the fault.

[0012] In addition, the distribution line fault location method based on directional traveling waves provided in the present application may also have the following additional technical features: In some embodiments, optionally, the step of determining the fault section of the distribution line based on the type of directional traveling waves of the main terminal in each monitoring group and the type of directional traveling waves of all monitoring terminals except the main terminal in each monitoring group includes: determining the type of directional traveling waves of the main terminal in the monitoring group; when the type of directional traveling waves of the main terminal in the monitoring group is a reverse traveling wave, determining whether the fault location is within the monitoring group based on the directional traveling waves of all monitoring terminals except the main terminal in the monitoring group; when the type of directional traveling waves of the main terminal in the monitoring group is a forward traveling wave, determining that the fault location is not within the monitoring group.

[0013] In this embodiment, the type of directional traveling wave of the main terminal in the monitoring group can be determined first. When the type of directional traveling wave of the main terminal in the monitoring group is a reverse traveling wave, data is requested from other monitoring terminals in the group, and it is determined whether the fault location is in the monitoring group based on the directional traveling waves of all monitoring terminals except the main terminal in the monitoring group. When the type of directional traveling wave of the main terminal in the monitoring group is a forward traveling wave, it is not necessary to determine the directional traveling waves of other monitoring terminals in the monitoring group, and it can be determined that the fault location is not in the monitoring group, thereby reducing the burden of data processing.

[0014] In some embodiments, optionally, when the type of the directional traveling wave of the main terminal in the monitoring group is a reverse traveling wave, the step of determining whether the fault location is within the monitoring group based on the directional traveling waves of all the monitoring terminals except the main terminal in the monitoring group includes: determining the types of the directional traveling waves of all the monitoring terminals except the main terminal in the monitoring group; and when the types of the directional traveling waves of all the monitoring terminals except the main terminal in the monitoring group are all forward traveling waves, determining that the fault location is within the monitoring group.

[0015] In this embodiment, when the type of the directional traveling wave of the main terminal in the monitoring group is a reverse traveling wave, the type of the directional traveling wave of all monitoring terminals except the main terminal in the monitoring group can be determined, and when the type of the directional traveling wave of all monitoring terminals except the main terminal in the monitoring group is a forward traveling wave, it is determined that the fault location is located in the monitoring group. The present application utilizes directional traveling waves and monitoring terminals to determine the specific location of the fault, shortens the fault finding time, and improves the power supply reliability of the distribution line.

[0016] In some embodiments, optionally, the step of determining the fault location based on the initial traveling wave time information detected by all monitoring terminals in the fault section includes: obtaining the moment when the initial wave head of the traveling wave generated at the fault location reaches the main terminal, recorded as the first moment; obtaining the moment when the initial wave head reaches all monitoring terminals in the monitoring group except the main terminal, recorded as the second moment; obtaining the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave; determining the distance from the fault location to the main terminal in the monitoring group based on the first moment, the second moment, the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave.

[0017] In this embodiment, after determining in which monitoring group the fault location occurs, the distance from the location where the fault occurs to the main terminal in the monitoring group can also be specifically determined, so as to facilitate the staff to quickly repair the fault. Specifically, first obtain the moment when the initial wave head of the traveling wave generated by the fault location reaches the main terminal in the monitoring group, recorded as the first moment, the moment when the initial wave head reaches all monitoring terminals in the monitoring group, recorded as the second moment, the distance from the main terminal to each monitoring terminal, and the propagation speed of the traveling wave, and then determine the distance from the fault location to the main terminal in the monitoring group based on the first moment, the second moment, the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave. Since each monitoring group may have multiple monitoring terminals in addition to the main terminal, the second moment and the distance from the main terminal to the monitoring terminal are multiple, and the final distance is also multiple. At this time, the maximum distance among the multiple distances can be determined as the distance from the fault location to the main terminal in the monitoring group.

[0018] In some embodiments, optionally, the step of numbering the plurality of monitoring terminals includes: determining the trunk line and branch lines of the distribution line; and numbering the plurality of monitoring terminals based on the trunk line and branch lines.

[0019] In this embodiment, the monitoring terminals may be numbered according to the trunk lines and the branch lines. Specifically, the trunk lines are numbered first, and then the branch lines are numbered.

[0020] In some embodiments, optionally, the step of numbering multiple monitoring terminals includes: determining the distances from the multiple monitoring terminals to the power supply end or the load end; numbering the multiple monitoring terminals according to the distances from the monitoring terminals to the power supply end or the load end; wherein the number of the monitoring terminal close to the power supply end is smaller than the number of the monitoring terminal far from the power supply end, and the number of the monitoring terminal close to the load end is larger than the number of the monitoring terminal far from the load end.

[0021] In this embodiment, the number can be determined according to the distance from the monitoring terminal to the power supply end or the load end. Among multiple monitoring terminals, the closer the monitoring terminal is to the power supply end, the smaller the number is, and vice versa, the closer the monitoring terminal is to the load end, the larger the number is.

[0022] In some embodiments, optionally, the step of determining the main terminal of each monitoring group according to the numbers of the monitoring terminals in each monitoring group includes: obtaining the numbers of all monitoring terminals in each monitoring group; determining the monitoring terminal with the smallest number in each monitoring group; and determining the monitoring terminal with the smallest number as the main terminal.

[0023] In this embodiment, the master terminal can be determined according to the number of the monitoring terminal. Specifically, the monitoring terminal with the smallest number in each monitoring group is the master terminal of the monitoring group.

[0024] In some embodiments, optionally, the step of grouping a plurality of monitoring terminals to form a plurality of monitoring groups includes: acquiring a network topology relationship of a distribution line; and grouping a plurality of monitoring terminals according to the network topology relationship to form a plurality of monitoring groups.

[0025] In this embodiment, multiple monitoring terminals may be grouped according to the network topology relationship of the power distribution lines to form multiple monitoring groups.

[0026] The technical solution of the second aspect of the present invention provides a distribution line fault location system based on directional traveling waves. Multiple monitoring terminals are arranged on the distribution line. The distribution line fault location system based on directional traveling waves includes: a first determination module, used to number multiple monitoring terminals, and group multiple monitoring terminals to form multiple monitoring groups; a second determination module, used to determine the main terminal of each monitoring group according to the number of the monitoring terminal in each monitoring group; a third determination module, used to determine the directional traveling waves on the distribution line according to the current traveling waves and the voltage traveling waves; a first fault determination module, used to determine the fault section of the distribution line according to the type of directional traveling waves of the main terminal in each monitoring group, and the type of directional traveling waves of all monitoring terminals except the main terminal in each monitoring group; a second fault determination module, used to determine the fault location according to the initial traveling wave time information detected by all monitoring terminals in the fault section.

[0027] According to the distribution line fault location system based on directional traveling waves provided by the present invention, a plurality of monitoring terminals are arranged on the distribution line, and the distribution line fault location system based on directional traveling waves includes a first determination module, a second determination module, a third determination module, a first fault determination module, and a second fault determination module. The first determination module can number a plurality of monitoring terminals and group a plurality of monitoring terminals to form a plurality of monitoring groups. The second determination module can determine the main terminal of each monitoring group according to the number of the monitoring terminal in each monitoring group. The third determination module can determine the directional traveling waves on the distribution line according to the current traveling waves and the voltage traveling waves. The first fault determination module can determine the fault section of the distribution line according to the type of directional traveling waves of the main terminal in each monitoring group and the type of directional traveling waves of all monitoring terminals except the main terminal in each monitoring group. The second fault determination module can determine the fault location according to the initial traveling wave time information detected by all monitoring terminals in the fault section. According to the distribution line fault location system based on directional traveling waves provided by the present invention, a plurality of monitoring terminals are set on the distribution line, and the specific location of the fault can be determined by utilizing the plurality of monitoring terminals and the traveling waves when a distribution line fault occurs, as well as the initial traveling wave time information, thereby shortening the fault finding time and improving the power supply reliability of the distribution line.

[0028] The technical solution of the third aspect of the present invention provides a distribution line fault location device based on directional traveling waves, including: a memory and a processor, the memory stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the distribution line fault location method based on directional traveling waves as in any technical solution of the first aspect are implemented.

[0029] The distribution line fault location device based on directional traveling waves provided by the present invention includes a memory and a processor, the memory stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the distribution line fault location method based on directional traveling waves in any technical solution of the first aspect are implemented. Since the distribution line fault location device based on directional traveling waves can implement the steps of the distribution line fault location method based on directional traveling waves in any technical solution of the first aspect. Therefore, the distribution line fault location device based on directional traveling waves provided by the present invention also has all the beneficial effects of the distribution line fault location method based on directional traveling waves in any technical solution of the first aspect, which will not be repeated here.

[0030] The technical solution of the fourth aspect of the present invention provides a storage medium on which a program or instruction is stored. When the program or instruction is executed, the steps of the distribution line fault location method based on directional traveling waves in any technical solution of the first aspect are implemented.

[0031] According to the storage medium provided by the present invention, a program or instruction is stored thereon, and when the program or instruction is executed, the steps of the distribution line fault location method based on directional traveling waves in any technical solution of the first aspect are implemented. Since the storage medium can implement the steps of the distribution line fault location method based on directional traveling waves in any technical solution of the first aspect. Therefore, the storage medium provided by the present invention also has all the beneficial effects of the distribution line fault location method based on directional traveling waves in any technical solution of the first aspect, which will not be repeated here.

[0032] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is one of the flow charts of a method for locating a distribution line fault based on directional traveling waves according to an embodiment of the present invention; Figure 2 This is a second flow chart of a method for locating a distribution line fault based on directional traveling waves according to an embodiment of the present invention; Figure 3 This is a third flow chart of a method for locating a distribution line fault based on directional traveling waves according to an embodiment of the present invention; Figure 4is a schematic diagram of traveling wave ranging according to an embodiment of the present invention; Figure 5 is a configuration diagram of a traveling wave ranging monitoring terminal according to an embodiment of the present invention; Figure 6 is one of the schematic diagrams of a power distribution line failure according to an embodiment of the present invention; Figure 7 is a second schematic diagram of a power distribution line failure according to an embodiment of the present invention; Figure 8 is a third schematic diagram of a power distribution line failure according to an embodiment of the present invention; Fig. 9 is a fourth schematic diagram of a power distribution line failure according to an embodiment of the present invention; Fig.10 is a fifth schematic diagram of a power distribution line failure according to an embodiment of the present invention; Fig.11 is a sixth schematic diagram of a power distribution line failure according to an embodiment of the present invention; Fig.12 is one of the block diagrams of a distribution line fault location system based on directional traveling waves according to an embodiment of the present invention; Fig.13 This is the second block diagram of a distribution line fault location device based on directional traveling waves according to an embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0036] Refer to the following Figures 1 to 13 A method, system, device and storage medium for locating distribution line faults based on directional traveling waves according to some embodiments of the present invention are described.

[0037] In one embodiment according to the present application, Figure 1 As shown, a distribution line fault location method based on directional traveling waves is provided. A plurality of monitoring terminals are arranged on the distribution line. The distribution line fault location method based on directional traveling waves includes: S102: number multiple monitoring terminals and group the multiple monitoring terminals to form multiple monitoring groups.

[0038] S104, determining a main terminal of each monitoring group according to the numbers of the monitoring terminals in each monitoring group.

[0039] S106, determining a directional traveling wave on the distribution line according to the current traveling wave and the voltage traveling wave.

[0040] S108, determining the fault section of the distribution line according to the type of the directional traveling wave of the main terminal in each monitoring group and the types of the directional traveling waves of all monitoring terminals except the main terminal in each monitoring group.

[0041] S110, determining the fault location according to the initial traveling wave time information detected by all monitoring terminals in the fault section.

[0042] According to the distribution line fault location method based on directional traveling waves provided by the present invention, by setting multiple monitoring terminals on the distribution line, the specific location of the fault can be determined by using multiple monitoring terminals and the traveling waves when the distribution line fails, thereby solving the problem of accurate positioning of the distribution network, further shortening the fault finding time, and improving the power supply reliability of the distribution line. Specifically, multiple monitoring terminals can be numbered and grouped to form multiple monitoring groups, and then the main terminal in each monitoring group can be determined according to the number of the monitoring terminal, so that the main terminal in each monitoring group can be used to communicate with the monitoring terminal in the monitoring group. At this time, after the fault section of the distribution line is determined according to the type of directional traveling waves of the main terminal in each monitoring group and the type of directional traveling waves of the monitoring terminal in each monitoring group, it is not necessary to make all the monitoring terminals on the distribution line communicate with the centralized master station, reducing the burden of the centralized master station and solving the problem of large communication data volume of the centralized ranging master station of the distribution network. At the same time, since the present application can also use the initial traveling wave time information detected by all monitoring terminals in the fault section to accurately locate the fault location, it is convenient for the staff to quickly repair the fault.

[0043] In some embodiments, optionally, the step of determining the fault section of the distribution line based on the type of directional traveling waves of the main terminal in each monitoring group and the type of directional traveling waves of all monitoring terminals except the main terminal in each monitoring group includes: determining the type of directional traveling waves of the main terminal in the monitoring group; when the type of directional traveling waves of the main terminal in the monitoring group is a reverse traveling wave, determining whether the fault location is within the monitoring group based on the directional traveling waves of all monitoring terminals except the main terminal in the monitoring group; when the type of directional traveling waves of the main terminal in the monitoring group is a forward traveling wave, determining that the fault location is not within the monitoring group.

[0044] In this embodiment, the type of directional traveling wave of the main terminal in the monitoring group can be determined first. When the type of directional traveling wave of the main terminal in the monitoring group is a reverse traveling wave, data is requested from other monitoring terminals in the group, and it is determined whether the fault location is in the monitoring group based on the directional traveling waves of all monitoring terminals except the main terminal in the monitoring group. When the type of directional traveling wave of the main terminal in the monitoring group is a forward traveling wave, it is not necessary to determine the directional traveling waves of other monitoring terminals in the monitoring group, and it can be determined that the fault location is not in the monitoring group, thereby reducing the burden of data processing.

[0045] In some embodiments, optionally, when the type of the directional traveling wave of the main terminal in the monitoring group is a reverse traveling wave, the step of determining whether the fault location is within the monitoring group based on the directional traveling waves of all the monitoring terminals except the main terminal in the monitoring group includes: determining the types of the directional traveling waves of all the monitoring terminals except the main terminal in the monitoring group; and when the types of the directional traveling waves of all the monitoring terminals except the main terminal in the monitoring group are all forward traveling waves, determining that the fault location is within the monitoring group.

[0046] In this embodiment, when the type of the directional traveling wave of the main terminal in the monitoring group is a reverse traveling wave, the type of the directional traveling wave of all monitoring terminals except the main terminal in the monitoring group can be determined, and when the type of the directional traveling wave of all monitoring terminals except the main terminal in the monitoring group is a forward traveling wave, it is determined that the fault location is located in the monitoring group. The present application utilizes directional traveling waves and monitoring terminals to determine the specific location of the fault, shortens the fault finding time, and improves the power supply reliability of the distribution line.

[0047] In some embodiments, optionally, the step of determining the fault location based on the initial traveling wave time information detected by all monitoring terminals in the fault section includes: obtaining the moment when the initial wave head of the traveling wave generated at the fault location reaches the main terminal, recorded as the first moment; obtaining the moment when the initial wave head reaches all monitoring terminals in the monitoring group except the main terminal, recorded as the second moment; obtaining the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave; determining the distance from the fault location to the main terminal in the monitoring group based on the first moment, the second moment, the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave.

[0048] In this embodiment, after determining in which monitoring group the fault location occurs, the distance from the location where the fault occurs to the main terminal in the monitoring group can also be specifically determined, so as to facilitate the staff to quickly repair the fault. Specifically, first obtain the first moment when the initial wave head of the traveling wave generated by the fault location reaches the main terminal in the monitoring group, the second moment when the initial wave head reaches all monitoring terminals in the monitoring group, the distance from the main terminal to each monitoring terminal, and the propagation speed of the traveling wave, and then determine the distance from the fault location to the main terminal in the monitoring group based on the first moment, the second moment, the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave. Since each monitoring group may have multiple monitoring terminals in addition to the main terminal, the second moment and the distance from the main terminal to the monitoring terminal are multiple, and the final distance is also multiple. At this time, the maximum distance among the multiple distances can be determined as the distance from the fault location to the main terminal in the monitoring group.

[0049] In some embodiments, optionally, the step of numbering the plurality of monitoring terminals includes: determining the trunk line and branch lines of the distribution line; and numbering the plurality of monitoring terminals based on the trunk line and branch lines.

[0050] In this embodiment, the monitoring terminals may be numbered according to the trunk lines and the branch lines. Specifically, the trunk lines are numbered first, and then the branch lines are numbered.

[0051] In some embodiments, optionally, the step of numbering multiple monitoring terminals includes: determining the distances from the multiple monitoring terminals to the power supply end or the load end; numbering the multiple monitoring terminals according to the distances from the monitoring terminals to the power supply end or the load end; wherein the number of the monitoring terminal close to the power supply end is smaller than the number of the monitoring terminal far from the power supply end, and the number of the monitoring terminal close to the load end is larger than the number of the monitoring terminal far from the load end.

[0052] In this embodiment, the number can be determined according to the distance from the monitoring terminal to the power supply end or the load end. Among multiple monitoring terminals, the closer the monitoring terminal is to the power supply end, the smaller the number is, and vice versa, the closer the monitoring terminal is to the load end, the larger the number is.

[0053] In some embodiments, optionally, the step of determining the main terminal of each monitoring group according to the numbers of the monitoring terminals in each monitoring group includes: obtaining the numbers of all monitoring terminals in each monitoring group; determining the monitoring terminal with the smallest number in each monitoring group; and determining the monitoring terminal with the smallest number as the main terminal.

[0054] In this embodiment, the master terminal can be determined according to the number of the monitoring terminal. Specifically, the monitoring terminal with the smallest number in each monitoring group is the master terminal of the monitoring group.

[0055] In some embodiments, optionally, the step of grouping a plurality of monitoring terminals to form a plurality of monitoring groups includes: acquiring a network topology relationship of a distribution line; and grouping a plurality of monitoring terminals according to the network topology relationship to form a plurality of monitoring groups.

[0056] In this embodiment, multiple monitoring terminals may be grouped according to the network topology relationship of the power distribution lines to form multiple monitoring groups.

[0057] In one embodiment according to the present application, Figure 2 As shown, a distribution line fault location method based on directional traveling waves is provided. A plurality of monitoring terminals are arranged on the distribution line. The distribution line fault location method based on directional traveling waves includes: S202: number multiple monitoring terminals and group the multiple monitoring terminals to form multiple monitoring groups.

[0058] S204: Determine the main terminal of each monitoring group according to the numbers of the monitoring terminals in each monitoring group.

[0059] S206, determining a directional traveling wave on the distribution line according to the current traveling wave and the voltage traveling wave.

[0060] S208, determining the type of directional traveling wave of the master terminal in the monitoring group.

[0061] S210: When the type of the directional traveling wave of the master terminal in the monitoring group is a reverse traveling wave, determine the types of the directional traveling waves of all monitoring terminals in the monitoring group except the master terminal.

[0062] S212: When the types of the directional traveling waves of all monitoring terminals except the master terminal in the monitoring group are all forward traveling waves, it is determined that the fault location is located in the monitoring group.

[0063] S214: When the type of the directional traveling wave of the master terminal in the monitoring group is a forward traveling wave, it is determined that the fault location is not in the monitoring group.

[0064] According to the distribution line fault location method based on directional traveling waves provided by the present invention, by setting multiple monitoring terminals on the distribution line, the specific location of the fault can be determined by using multiple monitoring terminals and traveling waves when the distribution line fails, thereby solving the problem of difficulty in accessing the centralized distance measurement master station of the distribution network, shortening the fault finding time, and improving the power supply reliability of the distribution line. Specifically, multiple monitoring terminals can be numbered and grouped first to form multiple monitoring groups, and then the main terminal in each monitoring group can be determined according to the number of the monitoring terminal, so that the main terminal in each monitoring group can be used to communicate with the monitoring terminal in the monitoring group. At this time, after the fault section of the distribution line is determined according to the type of directional traveling waves of the main terminal in each monitoring group and the type of directional traveling waves of the monitoring terminal in each monitoring group, it is not necessary to make all the monitoring terminals on the distribution line communicate with the centralized master station, and only the master terminal needs to be used for communication, which reduces the burden of the centralized master station and solves the problem of difficulty in accessing the centralized distance measurement master station of the distribution network. At the same time, since the present application can also use the initial traveling wave time information detected by all monitoring terminals in the fault section to accurately locate the fault location, it can facilitate the staff to quickly repair the fault.

[0065] In one embodiment according to the present application, Figure 3 As shown, a distribution line fault location method based on directional traveling waves is provided. A plurality of monitoring terminals are arranged on the distribution line. The distribution line fault location method based on directional traveling waves includes: S302: number multiple monitoring terminals and group the multiple monitoring terminals to form multiple monitoring groups.

[0066] S304: Determine the main terminal of each monitoring group according to the numbers of the monitoring terminals in each monitoring group.

[0067] S306, determining a directional traveling wave on the distribution line according to the current traveling wave and the voltage traveling wave.

[0068] S308, determining the fault section of the distribution line according to the type of the directional traveling wave of the main terminal in each monitoring group and the types of the directional traveling waves of all monitoring terminals except the main terminal in each monitoring group.

[0069] S310, obtaining the first moment when the initial wave head of the traveling wave generated at the fault location reaches the main terminal, the second moment when the initial wave head reaches all monitoring terminals in the monitoring group except the main terminal, the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave.

[0070] S312, determining the distance from the fault location to the main terminal in the monitoring group according to the first moment, the second moment, the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave.

[0071] According to the distribution line fault location method based on directional traveling waves provided by the present invention, by setting multiple monitoring terminals on the distribution line, the specific location of the fault can be determined by using multiple monitoring terminals and traveling waves when the distribution line fails, thereby solving the problem of difficulty in accessing the centralized distance measurement master station of the distribution network, shortening the fault finding time, and improving the power supply reliability of the distribution line. Specifically, multiple monitoring terminals can be numbered and grouped first to form multiple monitoring groups, and then the main terminal in each monitoring group can be determined according to the number of the monitoring terminal, so that the main terminal in each monitoring group can be used to communicate with the monitoring terminal in the monitoring group. At this time, after the fault section of the distribution line is determined according to the type of directional traveling waves of the main terminal in each monitoring group and the type of directional traveling waves of the monitoring terminal in each monitoring group, it is not necessary to make all the monitoring terminals on the distribution line communicate with the centralized master station, and only the master terminal needs to be used for communication, which reduces the burden of the centralized master station and solves the problem of difficulty in accessing the centralized distance measurement master station of the distribution network.

[0072] After determining in which monitoring group the fault location occurs, the distance from the location where the fault occurs to the main terminal in the monitoring group can also be specifically determined, so as to facilitate the staff to quickly repair the fault. Specifically, first obtain the first moment when the initial wave head of the traveling wave generated by the fault location reaches the main terminal in the monitoring group, the second moment when the initial wave head reaches all monitoring terminals in the monitoring group, the distance from the main terminal to each monitoring terminal, and the propagation speed of the traveling wave, and then determine the distance from the fault location to the main terminal in the monitoring group based on the first moment, the second moment, the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave. Since each monitoring group may have multiple monitoring terminals in addition to the main terminal, the second moment and the distance from the main terminal to the monitoring terminal are multiple, and the final distance is also multiple. At this time, the maximum distance among the multiple distances can be determined as the distance from the fault location to the main terminal in the monitoring group.

[0073] In one embodiment of the present application, a distribution line fault location method based on directional traveling waves is provided, comprising: Step 1: Number each monitoring terminal.

[0074] Step 2: Group the numbered terminals according to the network topology, and the terminal with the smallest number in the group is the main terminal.

[0075] Step 3: Construct directional traveling wave based on current traveling wave and voltage traveling wave.

[0076] Step 4: The power system synchronizes the clock; when the directional wave of the master terminal is a reverse wave, it requests data from the members in the group and determines whether the fault is within the group based on the positive and negative directional waves of other members.

[0077] Step 5: When the directional traveling waves of other members are all forward traveling waves, the fault is within the group, and the distance measurement calculation is performed and the largest calculation result is uploaded to the distribution automation master station.

[0078] Through the technical solution of the present invention, a new method of distribution network traveling wave ranging of an on-site intelligent distributed lightweight master station using directional traveling waves is realized, which solves the problem of difficulty in accessing a centralized ranging master station in the distribution network, shortens the fault finding time, and improves the power supply reliability of the distribution line.

[0079] In one embodiment of the present application, a distribution line fault location method based on directional traveling waves is provided, wherein the monitoring terminal is also the main terminal, the monitoring terminals communicate with each other, the terminals perform distance measurement calculations, and send the distance measurement results to the distribution automation master station. The distribution line fault location method based on directional traveling waves includes: Step 1: Number the monitoring terminals according to their distribution on the line. Small numbers are in front and large numbers are in the back. The closer to the power supply end, the smaller the number, and the closer to the load end, the larger the number. First number the monitoring terminals on the trunk line, and then number the monitoring terminals on the branch line.

[0080] Step 2: Construct a directional traveling wave based on the voltage traveling wave and the current traveling wave.

[0081] Step 3: Group the monitoring terminals according to the network topology. The monitoring terminal with the smallest number in the same group is the main terminal. The monitoring terminals that have a direct connection relationship with the main terminal are in this group.

[0082] Step 4: When the initial fault wave detected by the master terminal is a reverse wave, it will request data from other members in the group. If and only if the waves of other members are all forward waves, the master terminal determines that the fault is within the group, performs distance measurement calculations, and sends the maximum result of the distance measurement results to the distribution automation master station.

[0083] Among them, Figure 4 As shown, the principle of the double-end traveling wave ranging of the present application is as follows: traveling wave ranging devices (monitoring terminals) are installed on both sides M and N of the fault line. After the fault occurs at point F, the traveling wave head generated at the fault point will propagate to both sides ( Figure 4 The arrows pointing to both sides of F indicate the propagation direction of the traveling wave). The times when the initial wave head arrives at the measuring ends on both sides are T1 and T2 respectively. According to the relationship between the line length and the fault distance, the following relationship holds: ; ; in, It represents the distance between M and F. It represents the distance between N and F, v represents the propagation speed of the traveling wave, and L represents the distance between M and N.

[0084] The following example illustrates this. Terminals are deployed at the head, middle, and end of the main line of a 10kV line, located at the main #001 pole, #072 pole, and #145 pole, respectively. The main #002 pole has a branch. Terminals are deployed at the head and end of the branch, located at the #022 pole and #041 pole of the branch.

[0085] Number the terminals. Small numbers are placed first, and large numbers are placed last. The closer to the power source (e.g., substation), the smaller the number, and the closer to the load, the larger the number. First number the terminals on the trunk line, and then number the terminals on the branch line. Based on this principle, the terminal numbering results are as follows: Figure 5 shown.

[0086] Directional traveling waves are constructed based on current traveling waves and voltage traveling waves. After a fault occurs, the initial traveling wave of the fault propagates to each terminal. Each terminal records the arrival time of the initial traveling wave of the fault and calculates the direction of the traveling wave. For the trunk line, it is stipulated that the bus points to the line as a forward traveling wave, and the line points to the bus as a reverse traveling wave. Under the above conditions, when the polarity of the initial voltage traveling wave is opposite to that of the initial current traveling wave, it is judged to be a reverse traveling wave. When the polarity of the initial current traveling wave and the initial voltage traveling wave are the same, it is a forward traveling wave. For branch lines, it is stipulated that the trunk line points to the branch line as a forward traveling wave, and the branch line points to the trunk line as a reverse traveling wave. Under the above conditions, when the polarity of the initial voltage traveling wave is opposite to that of the current traveling wave, it is judged to be a reverse traveling wave. When the polarity of the initial current traveling wave and the initial voltage traveling wave are the same, it is a forward traveling wave.

[0087] The terminals are grouped according to the network topology. ①②④ is a group, ②③ is a group, and ④⑤ is a group. The terminals in the same group will communicate with each other. The terminal with the smallest number in the same group is the master terminal. When the initial traveling wave of the fault detected by the master terminal is negative (reverse traveling wave), it will request data from other members in the group. When and only when the traveling waves of other members are positive (forward traveling wave), the master terminal determines that the fault is within the group, performs ranging calculation, and sends the maximum result of the ranging results to the distribution master station.

[0088] The specific instructions are as follows: After a fault occurs, the initial fault wave propagates from the fault point to all locations along the line. The time when the initial fault wave reaches terminal i is Ti. Each terminal records the arrival time Ti and the direction of the wave. When the direction of the wave is a forward wave, it is recorded as positive (+). When the direction of the wave is a reverse wave, it is recorded as negative (-).

[0089] The following example illustrates a failure scenario: 1. The fault point f is located between the main line poles #001 and #002.

[0090] like Figure 6 As shown in the figure, when the fault is located between the main line pole #001 and pole #002, ① detects that the traveling wave direction is negative, recorded as T1-, and ① requests data (traveling wave arrival time and direction) from ②④. The traveling wave directions of ②④ are both positive, recorded as T2+ and T4+, and ① determines that the fault is within the group and performs distance calculation.

[0091] According to T1, T2 and L12, the distance between the fault point and ① is calculated as: .

[0092] According to T1, T4 and L14, the distance between the fault point and ① is calculated as: .

[0093] In theory, Should be equal to .

[0094] Terminal ① uploads the distance measurement calculation results to the distribution master station (distribution automation master station).

[0095] 2. The fault point f is located between the main line poles #002 and #072.

[0096] like Figure 7 As shown, when the fault is located between the main line pole #002 and pole #072, the same as the above situation, ① determine that the fault is within the group and perform distance calculation.

[0097] According to T1, T4 and L14, the distance from the fault point to ① is calculated as the distance from the #001 pole to the #002 pole on the main line on L14. > Terminal ① uploads the maximum value of the ranging calculation result to the allocation master station.

[0098] 3. The fault point f is located before terminal ④ on the branch line.

[0099] like Figure 8 As shown in the figure, when the fault is located before terminal ④ on the branch line, ① determines that the fault is within the group and performs distance calculation. Based on T1, T2 and L12, the distance between the fault point and ① is calculated. It is the distance from pole #001 to pole #002 on the main line of L12. < Terminal ① takes the maximum value of the distance calculation result Upload to the distribution station.

[0100] 4. The fault point f is located between the main line poles #072 and #145.

[0101] like Fig. 9As shown in the figure, when the fault is located between the main line pole #072 and pole #145, ① detects that the traveling wave direction is negative, and ① requests data from ②④. The traveling wave directions of ②④ are one negative and one positive, and ① determines that the fault is not in the group, and does not perform distance calculation.

[0102] ② in ②③ detects that the traveling wave direction is negative, ② requests data from ③, the traveling wave direction of ③ is positive, ② determines that the fault is within the group and performs distance calculation.

[0103] According to T2, T3 and L23, the distance between the fault point and ② is calculated as: Terminal ② calculates the distance measurement result Upload to the distribution station.

[0104] 5. The fault point f is located between the branch line poles #022 and #041.

[0105] like Fig.10 As shown in the figure, when the fault is located between the branch line #022 and #041, ① detects that the traveling wave direction is negative, and ① requests data from ②④. The traveling wave directions of ②④ are one positive and one negative, and ① determines that the fault is not in the group, and does not perform distance calculation.

[0106] ④ in ④⑤ detects that the traveling wave direction is negative, ④ requests data from ⑤, the traveling wave direction of ⑤ is positive, ④ determines that the fault is within the group and performs distance calculation.

[0107] According to T4, T5 and L45, the distance between the fault point and ④ is calculated as: Terminal ④ calculates the distance measurement result Upload to the distribution station.

[0108] 6. If Fig.11 As shown in the figure, when the fault point f is located in the adjacent line, the directional traveling waves detected by terminals ①②③④⑤ are all positive, and it is judged that the fault is not in this line, and no ranging calculation is performed.

[0109] like Fig.12As shown, an embodiment of the second aspect of the present invention provides a distribution line fault location system 1 based on directional traveling waves, wherein a plurality of monitoring terminals are arranged on the distribution line, and the distribution line fault location system 1 based on directional traveling waves comprises: a first determination module 10, for numbering the plurality of monitoring terminals, and grouping the plurality of monitoring terminals to form a plurality of monitoring groups; a second determination module 11, for determining the main terminal of each monitoring group according to the number of the monitoring terminal in each monitoring group; a third determination module 12, for determining the directional traveling waves on the distribution line according to the current traveling waves and the voltage traveling waves; a first fault determination module 13, for determining the fault section of the distribution line according to the type of the directional traveling waves of the main terminal in each monitoring group, and the types of the directional traveling waves of all monitoring terminals except the main terminal in each monitoring group; a second fault determination module 14, for determining the fault location according to the initial traveling wave time information detected by all monitoring terminals in the fault section.

[0110] According to the distribution line fault location system 1 based on directional traveling waves provided by the present invention, a plurality of monitoring terminals are arranged on the distribution line, and the distribution line fault location system 1 based on directional traveling waves comprises a first determination module 10, a second determination module 11, a third determination module 12, a first fault determination module 13, and a second fault determination module 14. The first determination module 10 can number a plurality of monitoring terminals and group a plurality of monitoring terminals to form a plurality of monitoring groups. The second determination module 11 can determine the main terminal of each monitoring group according to the number of the monitoring terminal in each monitoring group. The third determination module 12 can determine the directional traveling waves on the distribution line according to the current traveling waves and the voltage traveling waves. The first fault determination module 13 can determine the fault section of the distribution line according to the type of directional traveling waves of the main terminal in each monitoring group and the type of directional traveling waves of all monitoring terminals except the main terminal in each monitoring group. The second fault determination module 14 can determine the fault location according to the initial traveling wave time information detected by all monitoring terminals in the fault section. According to the distribution line fault location system 1 based on directional traveling waves provided by the present invention, a plurality of monitoring terminals are set on the distribution line, and the specific location of the fault can be determined by utilizing the plurality of monitoring terminals and the traveling waves when a distribution line fault occurs, as well as the initial traveling wave time information, thereby shortening the fault finding time and improving the power supply reliability of the distribution line.

[0111] like Fig.13 As shown, an embodiment of the third aspect of the present invention provides a distribution line fault location device 2 based on directional traveling waves, comprising: a memory 22 and a processor 24, the memory 22 stores a program or instruction, and when the program or instruction is executed by the processor 24, the steps of the distribution line fault location method based on directional traveling waves in any embodiment of the first aspect are implemented.

[0112] The distribution line fault location device 2 based on directional traveling waves provided by the present invention includes a memory 22 and a processor 24, the memory 22 stores a program or instruction, and when the program or instruction is executed by the processor 24, the steps of the distribution line fault location method based on directional traveling waves in any embodiment of the first aspect are implemented. Since the distribution line fault location device 2 based on directional traveling waves can implement the steps of the distribution line fault location method based on directional traveling waves in any embodiment of the first aspect. Therefore, the distribution line fault location device 2 based on directional traveling waves provided by the present invention also has all the beneficial effects of the distribution line fault location method based on directional traveling waves in any embodiment of the first aspect, which will not be repeated here.

[0113] An embodiment of the fourth aspect of the present invention provides a storage medium on which a program or instruction is stored. When the program or instruction is executed, the steps of the distribution line fault location method based on directional traveling waves in any embodiment of the first aspect are implemented.

[0114] According to the storage medium provided by the present invention, a program or instruction is stored thereon, and when the program or instruction is executed, the steps of the distribution line fault location method based on directional traveling waves in any embodiment of the first aspect are implemented. Since the storage medium can implement the steps of the distribution line fault location method based on directional traveling waves in any embodiment of the first aspect. Therefore, the storage medium provided by the present invention also has all the beneficial effects of the distribution line fault location method based on directional traveling waves in any embodiment of the first aspect, which will not be repeated here.

[0115] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0116] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0117] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0118] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A distribution line fault location method based on directional traveling waves, characterized in that: The distribution line is provided with a plurality of monitoring terminals, and the distribution line fault location method based on directional traveling waves comprises: Numbering the plurality of monitoring terminals, and grouping the plurality of monitoring terminals to form a plurality of monitoring groups; Determine the main terminal of each monitoring group according to the number of the monitoring terminal in each monitoring group; Determining a directional traveling wave on the distribution line according to the current traveling wave and the voltage traveling wave; Determining the fault section of the distribution line according to the type of the directional traveling wave of the master terminal in each monitoring group and the types of the directional traveling waves of all the monitoring terminals except the master terminal in each monitoring group; The fault location is determined according to the initial traveling wave time information detected by all the monitoring terminals in the fault section.

2. The method for locating distribution line faults based on directional traveling waves according to claim 1, characterized in that: The step of determining the fault section of the distribution line according to the type of the directional wave of the master terminal in each monitoring group and the type of the directional wave of all the monitoring terminals except the master terminal in each monitoring group comprises: Determining the type of the directional traveling wave of the master terminal in the monitoring group; In the case where the type of the directional traveling wave of the master terminal in the monitoring group is a reverse traveling wave, determining whether the fault location is within the monitoring group according to the directional traveling waves of all the monitoring terminals except the master terminal in the monitoring group; In the case where the type of the directional traveling wave of the master terminal in the monitoring group is a forward traveling wave, it is determined that the fault location is not in the monitoring group.

3. The method for locating distribution line faults based on directional traveling waves according to claim 2, characterized in that: In the case where the type of the directional traveling wave of the master terminal in the monitoring group is a reverse traveling wave, the step of determining whether the fault location is within the monitoring group according to the directional traveling waves of all the monitoring terminals except the master terminal in the monitoring group comprises: Determining the types of the directional traveling waves of all the monitoring terminals in the monitoring group except the master terminal; In the case that the types of the directional traveling waves of all the monitoring terminals in the monitoring group except the master terminal are all forward traveling waves, it is determined that the fault location is located in the monitoring group.

4. The method for locating distribution line faults based on directional traveling waves according to claim 1, characterized in that: The step of determining the fault location according to the initial traveling wave time information detected by all the monitoring terminals in the fault section comprises: Obtaining the time when the initial wave head of the traveling wave generated at the fault position reaches the main terminal, recorded as the first time; Obtaining the time when the initial wave head reaches the monitoring terminals in all the monitoring groups except the master terminal, and recording it as the second time; Acquire the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave; The distance from the fault location to the main terminal in the monitoring group is determined according to the first moment, the second moment, the distance from the main terminal to the monitoring terminal, and the propagation speed of the traveling wave.

5. The method for locating distribution line faults based on directional traveling waves according to claim 1, characterized in that: The step of numbering the plurality of monitoring terminals comprises: Determine the main line and branch lines of the distribution line; The plurality of monitoring terminals are numbered based on the trunk line and the branch lines.

6. The method for locating distribution line faults based on directional traveling waves according to claim 1, characterized in that: The step of numbering the plurality of monitoring terminals comprises: Determining the distances from the plurality of monitoring terminals to the power supply end or the load end; Numbering the plurality of monitoring terminals according to the distance from the monitoring terminal to the power supply end or the load end; Among them, the number of the monitoring terminal close to the power supply end is smaller than the number of the monitoring terminal far from the power supply end, and the number of the monitoring terminal close to the load end is larger than the number of the monitoring terminal far from the load end.

7. The method for locating distribution line faults based on directional traveling waves according to claim 1, characterized in that: The step of determining the master terminal of each monitoring group according to the serial number of the monitoring terminal in each monitoring group comprises: Obtaining serial numbers of all the monitoring terminals in each monitoring group; Determine the monitoring terminal with the smallest number in each monitoring group; The monitoring terminal with the smallest number is determined as the master terminal.

8. The method for locating distribution line faults based on directional traveling waves according to claim 1, characterized in that: The step of grouping the plurality of monitoring terminals to form a plurality of monitoring groups comprises: Obtaining a network topology relationship of the power distribution line; The plurality of monitoring terminals are grouped according to the network topology relationship to form a plurality of monitoring groups.

9. A distribution line fault location system based on directional traveling waves, characterized in that: The distribution line is provided with a plurality of monitoring terminals, and the distribution line fault location system based on directional traveling waves comprises: A first determining module, used for numbering the plurality of monitoring terminals and grouping the plurality of monitoring terminals to form a plurality of monitoring groups; A second determining module, configured to determine a master terminal of each monitoring group according to the serial number of the monitoring terminal in each monitoring group; A third determination module, used to determine the directional traveling wave on the distribution line according to the current traveling wave and the voltage traveling wave; A first fault determination module, used for determining the fault section of the distribution line according to the type of the directional wave of the main terminal in each monitoring group and the type of the directional wave of all the monitoring terminals except the main terminal in each monitoring group; The second fault determination module is used to determine the fault location according to the initial traveling wave time information detected by all the monitoring terminals in the fault section.

10. A distribution line fault location device based on directional traveling waves, characterized in that: include: A memory and a processor, wherein the memory stores a program or an instruction, and when the program or the instruction is executed by the processor, the steps of the distribution line fault location method based on directional traveling waves as described in any one of claims 1 to 8 are implemented.

11. A storage medium, characterized in that: A program or instruction is stored thereon, and when the program or the instruction is executed, the steps of the distribution line fault location method based on directional traveling waves as described in any one of claims 1 to 8 are implemented.

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