A method and device for locating a fault on a power transmission line

Abstract

The application discloses a power transmission line fault positioning method and device, and provides a scheme for generating a station end cumulative distance matrix according to tower coordinate information in a power transmission line. When a power transmission line fault is detected, the station end cumulative distance matrix and ranging information obtained by a substation fault positioning device are used to compare ranging data with elements in the station end cumulative distance matrix, so as to determine the relative position relationship between a fault point and each tower according to a comparison result, and then obtain a line where the fault point is located and a specific line section, thereby solving the technical problem of low positioning efficiency of an existing power transmission line fault positioning method when facing a complex network frame structure with multiple branches.

Description

Technical Field

[0001] This application relates to the field of power operation and maintenance technology, and in particular to a method and device for locating faults in transmission lines. Background Technology

[0002] With the rapid development of my country's economy, the electricity demand of all sectors is increasing daily, and the requirements for the safety and reliability of the power grid are also becoming increasingly stringent. As the main artery of the power grid, the importance of transmission lines is self-evident. However, transmission lines are widely distributed, mostly operating in suburban and open areas, and are often affected by changes in severe weather, geographical conditions, and operating conditions. Coupled with the impact of human factors and uncontrollable natural disasters, transmission lines have become the weakest and most prone to failure part of the power grid.

[0003] When a transmission line fails, existing fault location devices can only provide distance information between the fault point and the location device, but cannot provide the specific faulty line tower point or tower spatial range. It is necessary to rely on operation and maintenance experience to further judge the potential hazards near the line or to manually calculate the fault location tower number. However, the transmission line network structure is complex, often with multiple branch lines for a main line. Manual calculation requires simultaneous calculation of the main line and multiple branch lines, which is a large workload and inefficient, greatly reducing the speed and efficiency of emergency response, thus affecting the progress of emergency power restoration work. Summary of the Invention

[0004] This application provides a method and apparatus for locating faults in transmission lines, which solves the technical problem of low calculation efficiency in fault location when facing complex grid scenarios in existing transmission line fault location methods.

[0005] To address the aforementioned technical problems, the first aspect of this application provides a method for locating faults in transmission lines, comprising:

[0006] Obtain the coordinate information of towers in power transmission lines;

[0007] Based on the tower coordinate information, construct the line tower coordinate matrix;

[0008] Based on the line tower coordinate matrix and the substation coordinates associated with the faulty line, the substation coordinates are added to the line tower coordinate matrix in the order of the lines to obtain the front base tower coordinate matrix.

[0009] Based on the coordinate matrix of the base tower and the coordinate matrix of the line tower, the distance between adjacent towers is calculated to obtain the tower distance matrix;

[0010] Based on the tower distance matrix and a preset triangular matrix, calculate the station-end cumulative distance matrix;

[0011] When a transmission line fault is detected, fault location information is obtained, and the fault location information is compared with the station-end cumulative distance matrix. Based on the comparison result, the line location information of the fault point is determined.

[0012] Preferably, the line tower coordinate matrix specifically includes: a line tower longitude matrix and a line tower latitude matrix;

[0013] The coordinate matrix of the front base tower specifically includes: the longitude matrix of the front base tower and the latitude matrix of the front base tower.

[0014] Preferably, the tower distance matrix is ​​calculated by using the coordinate matrix of the preceding base towers and the coordinate matrix of the line towers to obtain the tower distance matrix, specifically including:

[0015] Based on the coordinate matrix of the base tower and the coordinate matrix of the line tower, and combined with the preset tower distance calculation formula, the tower distance between adjacent towers is calculated, and a tower distance matrix is ​​generated based on the calculated tower distance.

[0016] The formula for calculating the distance between towers is as follows:

[0017]

[0018] In the formula, D is the tower distance matrix, Wq is the latitude matrix of the front base tower, Wh is the latitude matrix of the line tower, Jq is the longitude matrix of the front base tower, Jh is the longitude matrix of the line tower, and R is the average radius of the Earth.

[0019] Preferably, the calculation of the station-end cumulative distance matrix, based on the tower distance matrix and a preset triangular matrix, specifically includes:

[0020] The tower distance matrix, combined with a preset triangular matrix, is used to calculate the station-end cumulative distance matrix according to a preset cumulative distance matrix calculation formula;

[0021] The specific formula for calculating the cumulative distance matrix is ​​as follows:

[0022] D x =C·D;

[0023] In the formula, D is the tower distance matrix, C is the triangular matrix, and D x Accumulate the distance matrix at the station.

[0024] Preferably, comparing the fault ranging information with the station-end cumulative distance matrix, and determining the line location information of the fault point based on the comparison result specifically includes:

[0025] The fault location information is compared with the values ​​of each row element in the station-end cumulative distance matrix. If the value of the fault location information is greater than or equal to the value of the current row and less than the value of the next row, the line location information of the fault point is determined based on the tower corresponding to the current row value and the next row value.

[0026] Meanwhile, a second aspect of this application provides a transmission line fault location device, comprising:

[0027] The tower information acquisition unit is used to acquire the coordinate information of towers in the transmission line;

[0028] The line tower coordinate matrix construction unit is used to construct the line tower coordinate matrix based on the tower coordinate information.

[0029] The front base tower coordinate matrix generation unit is used to add the substation coordinates to the line tower coordinate matrix according to the line tower coordinate matrix and the substation coordinates associated with the fault line, in the line sequence, to obtain the front base tower coordinate matrix.

[0030] The tower distance matrix generation unit is used to calculate the distance between adjacent towers based on the coordinate matrix of the preceding base towers and the coordinate matrix of the line towers, and obtain the tower distance matrix.

[0031] The station-end cumulative distance matrix generation unit is used to calculate the station-end cumulative distance matrix based on the tower distance matrix and a preset triangular matrix.

[0032] The fault location unit is used to acquire fault ranging information when a transmission line fault is detected, compare the fault ranging information with the station-end cumulative distance matrix, and determine the line location information of the fault point based on the comparison result.

[0033] Preferably, the line tower coordinate matrix specifically includes: a line tower longitude matrix and a line tower latitude matrix;

[0034] The coordinate matrix of the front base tower specifically includes: the longitude matrix of the front base tower and the latitude matrix of the front base tower.

[0035] Preferably, the tower distance matrix generation unit is specifically used for:

[0036] Based on the coordinate matrix of the base tower and the coordinate matrix of the line tower, and combined with the preset tower distance calculation formula, the tower distance between adjacent towers is calculated, and a tower distance matrix is ​​generated based on the calculated tower distance.

[0037] The formula for calculating the distance between towers is as follows:

[0038]

[0039] In the formula, D is the tower distance matrix, Wq is the latitude matrix of the front base tower, Wh is the latitude matrix of the line tower, Jq is the longitude matrix of the front base tower, Jh is the longitude matrix of the line tower, and R is the average radius of the Earth.

[0040] Preferably, the station-end cumulative distance matrix generation unit is specifically used for:

[0041] The tower distance matrix, combined with a preset triangular matrix, is used to calculate the station-end cumulative distance matrix according to a preset cumulative distance matrix calculation formula;

[0042] The specific formula for calculating the cumulative distance matrix is ​​as follows:

[0043] D x =C·D;

[0044] In the formula, D is the tower distance matrix, C is the triangular matrix, and D x Accumulate the distance matrix at the station.

[0045] Preferably, the fault location unit is specifically used for:

[0046] The fault location information is compared with the values ​​of each row element in the station-end cumulative distance matrix. If the value of the fault location information is greater than or equal to the value of the current row and less than the value of the next row, the line location information of the fault point is determined based on the tower corresponding to the current row value and the next row value.

[0047] As can be seen from the above technical solutions, this application has the following advantages:

[0048] The solution provided in this application generates a station-end cumulative distance matrix based on the tower coordinate information in the transmission line. When a transmission line fault is detected, the station-end cumulative distance matrix and the ranging information obtained by the substation fault location device are used to compare the ranging data with the elements in the station-end cumulative distance matrix. Based on the comparison results, the relative positional relationship between the fault point and each tower is determined, thereby obtaining the line where the fault point is located and the specific line section. This solves the technical problem of low positioning efficiency in existing transmission line fault location when facing complex grid structures with multiple branches. Attached Figure Description

[0049] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0050] Figure 1 This is a flowchart illustrating a method for locating faults in power transmission lines provided in this application.

[0051] Figure 2 This is a structural schematic diagram of a power transmission line fault location device provided in this application. Detailed Implementation

[0052] This application provides a method and apparatus for locating faults in transmission lines, which solves the technical problem of low calculation efficiency in fault location when facing complex grid scenarios in existing transmission line fault location methods.

[0053] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0054] First, a detailed description of an embodiment of a power transmission line fault location method provided in this application.

[0055] Please see Figure 1 This embodiment provides a method for locating faults in power transmission lines, including:

[0056] Step 101: Obtain the coordinate information of the towers in the transmission line.

[0057] Step 102: Construct the line tower coordinate matrix based on the tower coordinate information.

[0058] First, the power grid master station records the transmission line information and obtains the tower coordinate information in the transmission line, that is, the latitude and longitude of the tower. Then, based on the obtained tower coordinate information, a line tower coordinate matrix is ​​constructed.

[0059] Assume there are two routes to be calculated: main line a and branch line b. The main line has n towers, and the branch line has m towers. The branch line branches off from the k-th tower of the main line, and k + m > n. Extract the longitude coordinates J of the towers on main line a, sorted by tower number from smallest to largest. a1 J a2 , ... J an Latitude coordinates are W a1 W a2 , ...W an Similarly, extract the longitude coordinates of tower b of branch line as J. b1 J b2 , ... Jbm Latitude coordinates are W b1 W b2 , ...W bm Based on these tower coordinate information, a line tower coordinate matrix is ​​constructed.

[0060] Furthermore, the coordinate matrix of the transmission line towers specifically includes: the longitude matrix of the transmission line towers and the latitude matrix of the transmission line towers.

[0061] It should be noted that in the examples of main line a and branch line b above, when constructing the coordinate matrix of the line towers, the coordinates of the line towers can be separated into longitude and latitude, and two matrices can be constructed respectively: the line tower longitude matrix and the line tower latitude matrix. For example, the constructed line longitude matrix Jx (k+m rows and 2 columns) can be... The line latitude matrix Wx(k+m, 2 columns) can be used as follows:

[0062] Step 103: Based on the line tower coordinate matrix and the substation coordinates associated with the faulty line, add the substation coordinates to the line tower coordinate matrix in the order of the lines to obtain the front base tower coordinate matrix.

[0063] It should be noted that, based on the line tower coordinate matrix obtained in the previous steps, the substation coordinates are added to the line tower coordinate matrix to form the initial base tower coordinate matrix to be calculated. For example, the last row of the line longitude matrix Jx is removed, and the substation longitude coordinates J are inserted into the first row. a0 The longitude matrix Jq (k+m rows, 2 columns) of the pre-base tower is formed as follows: Remove the last row from the line latitude matrix Wx and insert the substation longitude coordinates W into the first row. z This forms the latitude matrix Wq (k+m rows, 2 columns) of the front base tower, which is...

[0064] It is understandable that the implementation method of inserting the substation coordinates into the first row of the line coordinate matrix in this embodiment is because in the previous line coordinate matrix construction steps, the substation is generally regarded as the beginning of the line, and the tower coordinates are arranged in ascending order according to the tower number, that is, in the order from the beginning to the end. If the tower coordinates are arranged in descending order according to the tower number when constructing the line coordinate matrix, that is, in the order from the end to the beginning, then the substation coordinates should be inserted into the last row of the line coordinate matrix.

[0065] Step 104: Based on the coordinate matrix of the base tower and the coordinate matrix of the line tower, calculate the distance between adjacent towers to obtain the tower distance matrix.

[0066] It should be noted that, based on the coordinate matrix of the base towers and the coordinate matrix of the line towers, and combined with the preset formula for calculating the distance between towers, the distance between adjacent towers is calculated. Based on the calculated distances, a tower distance matrix D (k+m rows, 2 columns) is formed.

[0067] The formula for calculating the distance between towers is as follows:

[0068]

[0069] In the formula, D is the tower distance matrix, Wq is the latitude matrix of the previous tower, Wh is the latitude matrix of the line tower, Jq is the longitude matrix of the previous tower, Jh is the longitude matrix of the line tower, and R is the average radius of the Earth.

[0070] Step 105: Calculate the station-end cumulative distance matrix based on the tower distance matrix and the preset triangular matrix.

[0071] It should be noted that, based on the element arrangement order of the tower distance matrix obtained in the previous steps, a lower triangular matrix C with k+m rows and k+m columns is defined, i.e. Based on the formula for calculating the cumulative distance matrix, the station-end cumulative distance matrix D is obtained. x (k+m rows and 2 columns).

[0072] The specific formula for calculating the cumulative distance matrix is: D x =C·D;

[0073] In the cumulative distance matrix at the station end, the first column of the i-th row represents the distance from the i-th tower of the main line to the substation, and the second column represents the distance from the ik-th tower of the branch line to the substation.

[0074] Step 106: When a transmission line fault is detected, obtain the fault location information, compare the fault location information with the station-end cumulative distance matrix, and determine the line location information of the fault point based on the comparison result.

[0075] It should be noted that when a transmission line fault is detected, the substation will output distance measurement information Dc, where Dc is the distance from the substation to the fault point. By acquiring the fault distance measurement information, the fault distance measurement information is compared with the values of each row in the station-end accumulated distance matrix. If the value of the fault distance measurement information is greater than or equal to the value of the current row and less than the value of the next row, the line location information of the fault point is determined according to the towers corresponding to the value of the current row and the value of the next row. For example, possible fault points on the main line are determined first: when i=1 and the distance measurement Dc is less than the value in the first column of the i-th row, the potential fault point is between the head-end substation of the main line and the 1st tower; when 1≤i<n and the distance measurement Dc is greater than or equal to the value in the first column of the i-th row and less than the value in the first column of the (i+1)-th row, the potential fault point is between the i-th tower and the (i+1)-th tower of the main line; if n≤i≤k+m and the distance measurement Dc is greater than or equal to the value in the first column of the i-th row, the potential fault point is between the n-th tower of the main line and the end substation of the main line.

[0076] Then possible fault points on branch lines are determined: when i≤k and the distance measurement Dc is less than the value in the second column of the i-th row, the potential fault point is on the main line, and the potential fault point is determined according to the main line rule; when i=k and the distance measurement Dc is greater than or equal to the value in the second column of the i-th row and less than the value in the second column of the (i+1)-th row, the potential fault point is between the k-th tower of the main line and the 1st tower of the branch line; if k<i<k+m and the distance measurement Dc is greater than or equal to the value in the second column of the i-th row and less than the value in the second column of the (i+1)-th row, the potential fault point is between the (i-k)-th tower and the (i-k+1)-th tower of the branch line; if i=k+m and the distance measurement Dc is greater than or equal to the value in the second column of the i-th row, the potential fault point is between the (i-k)-th tower of the branch line and the end substation of the branch line. Finally, the potential fault points determined for the main line and the branch lines are aggregated to obtain the final calculated fault point set, that is, the line location information of each fault point.

[0077] The above content is the detailed description of the embodiment of the transmission line fault location method provided by the present application. The following is the detailed description of the embodiment of the transmission line fault location device provided by the present application.

[0078] Please refer to Figure 2 , the embodiment provides a transmission line fault location device, comprising:

[0079] a tower information acquisition unit 201, configured to acquire tower coordinate information in a transmission line;

[0080] a line tower coordinate matrix construction unit 202, configured to construct a line tower coordinate matrix according to the tower coordinate information;

[0081] The front base tower coordinate matrix generation unit 203 is used to add the substation coordinates to the line tower coordinate matrix according to the line tower coordinate matrix and the substation coordinates associated with the fault line, in the line sequence, to obtain the front base tower coordinate matrix.

[0082] The tower distance matrix generation unit 204 is used to calculate the distance between adjacent towers based on the coordinate matrix of the base towers and the coordinate matrix of the line towers, and obtain the tower distance matrix.

[0083] The station-end cumulative distance matrix generation unit 205 is used to calculate the station-end cumulative distance matrix based on the tower distance matrix and a preset triangular matrix.

[0084] The fault location unit 206 is used to acquire fault ranging information when a transmission line fault is detected, compare the fault ranging information with the station-end cumulative distance matrix, and determine the line location information of the fault point based on the comparison result.

[0085] Furthermore, the coordinate matrix of the transmission line towers specifically includes: the longitude matrix of the transmission line towers and the latitude matrix of the transmission line towers;

[0086] The coordinate matrix of the front base tower specifically includes: the longitude matrix of the front base tower and the latitude matrix of the front base tower.

[0087] Furthermore, the tower distance matrix generation unit is specifically used for:

[0088] Based on the coordinate matrix of the base tower and the coordinate matrix of the line tower, and combined with the preset tower distance calculation formula, the tower distance between adjacent towers is calculated, and a tower distance matrix is ​​generated based on the calculated tower distance.

[0089] The formula for calculating the distance between towers is as follows:

[0090]

[0091] In the formula, D is the tower distance matrix, Wq is the latitude matrix of the previous tower, Wh is the latitude matrix of the line tower, Jq is the longitude matrix of the previous tower, Jh is the longitude matrix of the line tower, and R is the average radius of the Earth.

[0092] Furthermore, the station-side cumulative distance matrix generation unit is specifically used for:

[0093] The tower distance matrix, combined with the preset triangular matrix, is used to calculate the station-end cumulative distance matrix according to the preset cumulative distance matrix calculation formula;

[0094] The specific formula for calculating the cumulative distance matrix is ​​as follows:

[0095] D x =C·D;

[0096] In the formula, D is the tower distance matrix, C is a triangular matrix, and D x Accumulate the distance matrix at the station end.

[0097] Furthermore, the fault location unit is specifically used for:

[0098] The fault location information is compared with the values ​​of each row of the cumulative distance matrix at the station. If the value of the fault location information is greater than or equal to the value of the current row and less than the value of the next row, the line location information of the fault point is determined based on the towers corresponding to the values ​​of the current row and the next row.

[0099] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the terminals, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed terminals, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units through some interfaces, and may be electrical, mechanical, or other forms.

[0101] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0102] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0103] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0104] 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. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0105] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method of fault location for a power transmission line, characterized in that, include: Obtain the coordinate information of towers in power transmission lines; Based on the tower coordinate information, a line tower coordinate matrix is ​​constructed, which specifically includes: a line tower longitude matrix and a line tower latitude matrix; Based on the line tower coordinate matrix and the substation coordinates associated with the faulty line, the substation coordinates are added to the line tower coordinate matrix in the order of the line to obtain the front base tower coordinate matrix. The front base tower coordinate matrix specifically includes: the front base tower longitude matrix and the front base tower latitude matrix. Based on the coordinate matrix of the base tower and the coordinate matrix of the line tower, the distance between adjacent towers is calculated to obtain the tower distance matrix; Based on the tower distance matrix and a preset triangular matrix, the station-end cumulative distance matrix is ​​calculated according to a preset cumulative distance matrix calculation formula, wherein the cumulative distance matrix calculation formula is specifically as follows: ； where D is the pole-to-pole distance matrix, C is the triangular matrix, D x is the station-end cumulative distance matrix; When a transmission line fault is detected, fault location information is obtained. The fault location information is compared with the values ​​of each row element in the station-end cumulative distance matrix. If the value of the fault location information is greater than or equal to the value of the current row and less than the value of the next row, the line location information of the fault point is determined based on the tower corresponding to the current row value and the next row value.

2. A method of locating a fault on a power transmission line as claimed in claim 1, wherein, Based on the coordinate matrix of the base towers and the coordinate matrix of the line towers, the distance between adjacent towers is calculated, resulting in a tower distance matrix that specifically includes: Based on the coordinate matrix of the base tower and the coordinate matrix of the line tower, and combined with the preset tower distance calculation formula, the tower distance between adjacent towers is calculated, and a tower distance matrix is ​​generated based on the calculated tower distance. The formula for calculating the distance between towers is as follows: ； In the formula, D is the tower distance matrix, Wq is the latitude matrix of the front base tower, Wh is the latitude matrix of the line tower, Jq is the longitude matrix of the front base tower, Jh is the longitude matrix of the line tower, and R is the average radius of the Earth.

3. A power line fault location device, characterized by, include: The tower information acquisition unit is used to acquire the coordinate information of towers in the transmission line; The line tower coordinate matrix construction unit is used to construct a line tower coordinate matrix based on the tower coordinate information. The line tower coordinate matrix specifically includes: a line tower longitude matrix and a line tower latitude matrix. The front base tower coordinate matrix generation unit is used to add the substation coordinates to the line tower coordinate matrix according to the line tower coordinate matrix and the substation coordinates associated with the fault line, in the line sequence, to obtain the front base tower coordinate matrix. The front base tower coordinate matrix specifically includes: the front base tower longitude matrix and the front base tower latitude matrix. The tower distance matrix generation unit is used to calculate the distance between adjacent towers based on the coordinate matrix of the preceding base towers and the coordinate matrix of the line towers, and obtain the tower distance matrix. The station-end cumulative distance matrix generation unit is used to calculate the station-end cumulative distance matrix based on the tower distance matrix, combined with a preset triangular matrix, and according to a preset cumulative distance matrix calculation formula. Specifically, the cumulative distance matrix calculation formula is as follows: ； where D is the pole-to-pole distance matrix, C is the triangular matrix, D x is the station-end accumulated distance matrix; The fault location unit is used to acquire fault distance information when a transmission line fault is detected, compare the fault distance information with the values ​​of each row element in the station-end cumulative distance matrix, and determine the line location information of the fault point based on the tower corresponding to the current row value and the next row value if the value of the fault distance information is greater than or equal to the current row value and less than the next row value.

4. A power line fault locator according to claim 3, wherein, The tower distance matrix generation unit is specifically used for: Based on the coordinate matrix of the base tower and the coordinate matrix of the line tower, and combined with the preset tower distance calculation formula, the tower distance between adjacent towers is calculated, and a tower distance matrix is ​​generated based on the calculated tower distance. The formula for calculating the distance between towers is as follows: ； In the formula, D is the tower distance matrix, Wq is the latitude matrix of the front base tower, Wh is the latitude matrix of the line tower, Jq is the longitude matrix of the front base tower, Jh is the longitude matrix of the line tower, and R is the average radius of the Earth.

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