Distribution network fault traveling wave integrated application system

Abstract

The invention discloses an integrated application system for distribution network fault traveling waves, and relates to the technical field of distribution network faults. The invention comprises a detection terminal screening module, a fault point analysis and confirmation module, a fault information monitoring module, an early warning terminal and a database. Based on the collection position of each detection terminal corresponding to each historical time of each branch line, each detection terminal corresponding to each branch line is screened out, and each fault point corresponding to each branch line is obtained by monitoring. At the same time, the accuracy of detecting the fault point of each detection terminal corresponding to each branch line is judged, and the fault maintenance measures corresponding to the fault point of each branch line are screened out, so as to perform the fault maintenance corresponding to each branch line, realize efficient maintenance of each branch line, improve the fault processing rate, reduce the inconvenience caused by the fault of each branch line, reduce the maintenance cost, realize efficient maintenance of the fault of each branch line of the distribution network, and improve the operation safety and stability of each branch line of the distribution network.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution network faults, and in particular to a distribution network fault traveling wave integrated application system and method. Background Art

[0002] The operation of the distribution network is closely related to people's lives. Therefore, it is necessary to perform various aspects of monitoring on the distribution network in order to timely detect distribution network faults. By screening out the detection ends corresponding to each branch line of the distribution network, and then using the power line fault detection device to monitor the corresponding traveling wave signals of each branch line, the line fault point can be found in time, and the fault screening of each branch line fault point team can obtain corresponding maintenance measures, so as to achieve efficient fault decision and maintenance and ensure the normal operation and maintenance of the distribution network.

[0003] The prior art, such as the invention patent application with announcement number CN110907751 B, discloses a method, device and system for fault line selection in a DC distribution network based on directional traveling waves, which includes: (1) extracting voltage traveling wave signals and current traveling wave signals; (2) obtaining voltage and current traveling wave line mode components; (3) starting the fault protection action when the differential components of the voltage or current traveling wave line mode components are continuously greater than the starting criterion setting value at multiple points; (4) decomposing the voltage forward and reverse traveling waves of each DC distribution line; (5) processing to obtain the forward and reverse traveling wave fault line selection criterion coefficients of each DC distribution line; (6) multiplying the forward wave line selection criterion coefficient of a certain line with the forward wave line selection criterion coefficients of other lines in pairs. If the multiplication results are all negative numbers, it is determined that the line is faulty and the line is cut off. The present invention adopts the differential components of directional traveling waves as the protection criterion quantity, which can realize the effective identification and accurate judgment of the fault line, improve the fault line identification accuracy and the fault line cutting speed.

[0004] With respect to the above scheme, the applicant of the present invention has found that the above technical problems have at least the following technical problems: the above scheme mainly adopts the differential component of the directional traveling wave as the protection criterion to realize the effective identification and accurate judgment of the fault line, improve the accuracy of fault line identification and the speed of fault line removal, but does not screen out the detection ends corresponding to each branch line, and thus cannot place the power line fault detection device at an accurate monitoring position, cannot accurately obtain the fault points corresponding to each branch line, cannot make targeted fault maintenance measures for the corresponding fault points of each branch line, cannot achieve accurate and efficient line fault maintenance decisions, and reduce the safety and efficiency of the operation of each branch line. Summary of the invention

[0005] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a distribution network fault traveling wave integrated application system.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides an integrated application system for distribution network fault traveling waves, including: a detection end screening module, which is used to obtain the collection positions of each historical detection end corresponding to each branch line of the distribution network from the database, and compare them, and at the same time obtain the placement information of each historical detection end corresponding to each branch line, analyze and obtain the placement difficulty coefficient of each historical detection end corresponding to each branch line, and screen out each detection end corresponding to each branch line.

[0007] The fault point analysis and confirmation module is used to place the power line fault detection device on each detection end corresponding to each branch line, and then monitor whether there is a fault point on each branch line, analyze and obtain the position interval of the fault point corresponding to each branch line, and analyze and obtain each fault point corresponding to each branch line, and judge the accuracy of detecting the fault point of each detection end corresponding to each branch line.

[0008] The fault information monitoring module is used to use the power line fault detection device to obtain the fault waveform of the fault point corresponding to each branch line, and compare it with the fault waveform type intervals corresponding to the maintenance measures stored in the database, and then screen out the fault maintenance measures corresponding to the fault point of each branch line.

[0009] The early warning terminal is used to issue an early warning when a fault occurs on a branch line.

[0010] Preferably, the screening obtains the detection ends corresponding to the branch lines, and the specific screening process is as follows: the placement difficulty coefficient of the historical detection ends corresponding to the branch lines is compared with the set placement difficulty threshold. If the placement difficulty coefficient of a historical detection end corresponding to a branch line is less than or equal to the set placement difficulty coefficient threshold, then the historical detection end is used as the detection end of the branch line pair, so as to obtain the detection ends corresponding to the branch lines through screening.

[0011] Preferably, the monitoring of whether there are fault points in each branch line, the specific monitoring process is as follows: according to the power line fault detection device installed on each detection end corresponding to each branch line, the monitoring results of each detection end corresponding to each branch line are obtained, wherein the monitoring results include the existence of a fault point or the absence of an abnormal point, and at the same time, based on the detection device, the amplitude and phase of the traveling wave signal between each detection end corresponding to each branch line are obtained. If the amplitude and phase of the traveling wave signal between a detection end corresponding to a branch line are abnormally increased or attenuated, it is determined that there is a fault point in the branch line, otherwise it does not exist, so as to monitor whether there are fault points in each branch line.

[0012] Preferably, the analysis obtains the location interval of the fault point corresponding to each branch line, and the specific screening process is as follows: when a fault point occurs in each branch line, the detection information corresponding to the monitoring between each detection end and each detection end of each branch line is obtained, wherein the detection information includes wave velocity, reflection and refraction, and the wave velocity corresponding to the monitoring between each detection end and each detection end of each branch line is compared with the reference wave velocity interval stored in the database. At the same time, the reflection and refraction corresponding to the monitoring between each detection end and each detection end of each branch line are also compared with the reference reflection interval and reference refraction interval stored in the database. If the wave velocity corresponding to the monitoring between a detection end and a detection end of a branch line is not within the reference wave velocity interval stored in the database, and the reflection and refraction corresponding to the monitoring between the detection end and the detection end of the branch line are not within the reference reflection interval and reference refraction interval stored in the database, it is determined that there is a fault point between the detection end and the detection end of the branch line, and so on, the location interval of the fault point corresponding to each branch line is obtained by analysis.

[0013] Preferably, the analysis obtains the fault points corresponding to each branch line, and the specific screening process is as follows: the position interval of the fault point corresponding to each branch line is preset corresponding to the point to obtain each point, and the traveling wave signal distortion data and the traveling wave signal transmission time difference of each point corresponding to the fault point of each branch line are obtained, and the traveling wave signal distortion data of each point corresponding to the fault point of each branch line are compared with the traveling wave signal distortion data interval stored in the database, and the traveling wave signal transmission time difference of each point corresponding to the fault point of each branch line is also compared with the traveling wave signal transmission time difference interval stored in the database. If the traveling wave signal distortion data of a point corresponding to a fault point of a branch line is within the traveling wave signal distortion data interval stored in the database, and the traveling wave signal transmission time difference of the point corresponding to the fault point of the branch line is not within the traveling wave signal transmission time difference interval stored in the database, then the point is determined to be a fault point, and the fault points corresponding to each branch line are obtained by analysis.

[0014] Preferably, the judgment obtains the accuracy of the fault point detected by each detection end corresponding to each branch line, and the specific judgment process is as follows: compare each fault point corresponding to each branch line with the fault point detected by each detection end corresponding to each branch line. If a fault point corresponding to a branch line is inconsistent with the fault point detected by a detection end corresponding to a branch line, it is determined that the detection result of the detection end is inaccurate, and re-detection is performed. If a fault point corresponding to a branch line is consistent with the fault point detected by a detection end corresponding to a branch line, it is determined that the detection result of the detection end is accurate, and the number of detections and the number of correct fault point positioning times of the branch line corresponding to the detection end are obtained from the database. The number of detections is divided by the number of correct fault point positioning times to obtain the accuracy of the detection corresponding to the detection end, and it is stored in the database, so as to determine the accuracy of the fault point detection of each detection end corresponding to each branch line.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides an integrated application system for distribution network fault traveling waves, which selects out the detection ends corresponding to the branch lines based on the collection positions of the detection ends corresponding to the branch lines at each historical time, and monitors the fault points corresponding to the branch lines, and at the same time judges the accuracy of the fault points detected by the detection ends corresponding to the branch lines, and selects the fault maintenance measures for the fault points corresponding to the branch lines, thereby executing the fault maintenance corresponding to the branch lines, realizing efficient maintenance of the branch lines, and solving the deficiencies in the current technology. At the same time, based on the monitoring of the traveling wave signals of the branch lines by the power line fault detection device, the fault points can be quickly located, the fault processing rate can be improved, the inconvenience caused by the failure of the branch lines can be effectively reduced, the maintenance cost can be reduced, the maintenance difficulty of the maintenance personnel in maintaining the faulty branch lines can be reduced, the efficient maintenance of the faults of the branch lines of the distribution network can be realized, and the operation safety and stability of the branch lines of the distribution network can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the system structure connection of the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 As shown, the distribution network fault traveling wave integrated application system includes a detection end screening module, a fault point analysis and confirmation module, a fault information monitoring module, an early warning terminal and a database.

[0020] The detection end screening module is connected to the fault point analysis and confirmation module and the database respectively, and the fault point analysis and confirmation module is connected to the fault information monitoring module, the early warning terminal and the database respectively.

[0021] The detection terminal screening module is used to obtain the collection positions of each historical detection terminal corresponding to each branch line of the distribution network from the database, and compare them. At the same time, it obtains the placement information of each historical detection terminal corresponding to each branch line, analyzes the placement difficulty coefficient of each historical detection terminal corresponding to each branch line, and screens the detection terminals corresponding to each branch line.

[0022] It should be noted that the placement information includes the required placement time, the number of placement assistants and the number of placement auxiliary devices, and the placement information of each branch line corresponding to each historical detection end is obtained from the database.

[0023] As an optional implementation method, the collection positions of each historical detection terminal corresponding to each branch line of the distribution network are compared. The specific comparison process is as follows: the collection positions of each historical detection terminal corresponding to each branch line of the distribution network are compared. If there are single or multiple identical position options for the collection positions of each historical detection terminal corresponding to a branch line of the distribution network, the same number of times the branch line corresponds to each historical detection terminal is counted, and the same number of times each historical detection terminal is compared with the set same number of times interval of the detection terminal. If the same number of times of the historical detection terminal is within the set same number of times interval of the detection terminal, the historical detection terminal is used as the detection terminal retained by the branch line. At the same time, the placement information of the branch line of the distribution network corresponding to each historical detection terminal when there are different options is counted, and then the placement difficulty is analyzed.

[0024] As an optional implementation, the analysis obtains the placement difficulty coefficient of each branch line corresponding to each historical detection terminal, and the specific calculation process is as follows: by the calculation formula:

[0025] The placement difficulty coefficient β of the kth historical detection terminal corresponding to the cth branch line is obtained by analysis. ck , c is the number of each branch line, c = 1, 2, ....., u, u is an arbitrary integer greater than 2, k is the number of each historical detection end, k = 1, 2, ..., n, n is an arbitrary integer greater than 2, χ ck is the required placement time of the kth historical detection terminal corresponding to the cth branch line, δ ck is the number of people assisting in placing the kth historical detection terminal corresponding to the cth branch line, is the number of placement auxiliary devices corresponding to the kth historical detection end of the cth branch line, χ′ is the set reference placement requirement time, δ′ is the set reference placement assistant number, is the set reference number of placement auxiliary devices, b1, b2, and b3 are the weight factors of the set placement requirement time, the weight factor of the number of placement assistants, and the weight factor of the number of placement auxiliary devices, respectively, 0<b1<1, 0<b2<1, 0<b3<1.

[0026] It should be noted that the placement time of each time the power line fault detection device is placed at each historical detection end corresponding to each branch line is obtained from the database, and the average placement time of the power line fault detection device placed at each historical detection end corresponding to each branch line is obtained through the average value formula method, and the average placement time is used as the set reference placement time, the number of people who assist in the placement of the power line fault detection device at each historical detection end corresponding to each branch line is obtained from the database, and the average number of people who assist in the placement of the power line fault detection device at each historical detection end corresponding to each branch line is obtained according to the average value formula method, and the average number of people who assist in the placement of the power line fault detection device at each historical detection end corresponding to each branch line is used as the set reference number of people who assist in the placement, the number of auxiliary devices for each time the power line fault detection device is placed at each historical detection end corresponding to each branch line is obtained from the database, and the average number of auxiliary devices for the placement of the power line fault detection device at each historical detection end corresponding to each branch line is obtained through the average value formula method, and the average placement time is used as the set reference number of auxiliary devices.

[0027] It should also be noted that the weight factor of the placement time required, the weight factor of the number of placement assistants, and the weight factor of the number of placement auxiliary devices are obtained through principal component analysis. The information of the placement time required, the number of placement assistants, and the number of placement auxiliary devices is first condensed, and then the corresponding variance explanation rate is obtained, and then divided by the variance explanation rate to get the corresponding weight.

[0028] It is important to note again that information condensation refers to condensing multiple analysis items into several key summary indicators, and the variance explanation rate refers to the contribution of each principal component or factor to the overall variance, usually expressed as a percentage, indicating how much information the factor contains about the original data.

[0029] As an optional implementation method, the screening obtains the detection ends corresponding to each branch line, and the specific screening process is as follows: the placement difficulty coefficient of each historical detection end corresponding to each branch line is compared with the set placement difficulty threshold. If the placement difficulty coefficient of a historical detection end corresponding to a branch line is less than or equal to the set placement difficulty coefficient threshold, then the historical detection end is used as the detection end of the branch line pair, so as to screen and obtain the detection ends corresponding to each branch line.

[0030] The fault point analysis and confirmation module is used to place the power line fault detection device on each detection end corresponding to each branch line, and then monitor whether there is a fault point on each branch line, analyze and obtain the position interval of the fault point corresponding to each branch line, and analyze and obtain each fault point corresponding to each branch line, and judge the accuracy of detecting the fault point of each detection end corresponding to each branch line.

[0031] It should be noted that the power line fault detection device is used to obtain the detection information of the corresponding monitoring between the detection terminals corresponding to each branch line, and the power line fault detection device is used to obtain the traveling wave signal distortion data and the traveling wave signal transmission time difference at each position of the fault point corresponding to each branch line.

[0032] It should also be noted that the traveling wave signal distortion data includes but is not limited to waveform peaks, waveform depressions and spectrum frequencies.

[0033] As an optional implementation manner, the monitoring of whether there are fault points in each branch line, the specific monitoring process is as follows: according to the power line fault detection device installed on each detection end corresponding to each branch line, the monitoring results of each detection end corresponding to each branch line are obtained, wherein the monitoring results include the existence of a fault point or the absence of an abnormal point, and at the same time, based on the detection device, the amplitude and phase of the traveling wave signal between each detection end corresponding to each branch line are obtained. If the amplitude and phase of the traveling wave signal between a detection end corresponding to a branch line are abnormally increased or attenuated, it is determined that there is a fault point in the branch line, otherwise it does not exist, so as to monitor whether there are fault points in each branch line.

[0034] As an optional implementation method, the analysis obtains the location interval of the fault point corresponding to each branch line, and the specific screening process is as follows: when a fault point occurs in each branch line, the detection information corresponding to the monitoring between each detection end and each detection end of each branch line is obtained, wherein the detection information includes wave velocity, reflection and refraction, and the wave velocity corresponding to the monitoring between each detection end and each detection end of each branch line is compared with the reference wave velocity interval stored in the database. At the same time, the reflection and refraction corresponding to the monitoring between each detection end and each detection end of each branch line are also compared with the reference reflection interval and reference refraction interval stored in the database. If the wave velocity corresponding to the monitoring between a detection end and a detection end of a branch line is not within the reference wave velocity interval stored in the database, and the reflection and refraction corresponding to the monitoring between the detection end and the detection end of the branch line are not within the reference reflection interval and reference refraction interval stored in the database, it is determined that there is a fault point between the detection end and the detection end of the branch line, and so on, the location interval of the fault point corresponding to each branch line is obtained by analysis.

[0035] As an optional implementation manner, the analysis obtains the fault points corresponding to each branch line, and the specific screening process is as follows: the position interval of the fault point corresponding to each branch line is preset corresponding to the point to obtain each point, and the traveling wave signal distortion data and the traveling wave signal transmission time difference of each point corresponding to the fault point of each branch line are obtained, and the traveling wave signal distortion data of each point corresponding to the fault point of each branch line are compared with the traveling wave signal distortion data interval stored in the database, and the traveling wave signal transmission time difference of each point corresponding to the fault point of each branch line is also compared with the traveling wave signal transmission time difference interval stored in the database. If the traveling wave signal distortion data of a point corresponding to a fault point of a branch line is within the traveling wave signal distortion data interval stored in the database, and the traveling wave signal transmission time difference of the point corresponding to the fault point of the branch line is not within the traveling wave signal transmission time difference interval stored in the database, then the point is determined to be a fault point, and the fault points corresponding to each branch line are obtained by analysis.

[0036] As an optional implementation method, the judgment obtains the accuracy of the fault point detected by each detection end corresponding to each branch line, and the specific judgment process is as follows: compare the fault points corresponding to each branch line with the fault points detected by each detection end corresponding to each branch line. If a fault point corresponding to a branch line is inconsistent with the fault point detected by a detection end corresponding to a branch line, it is determined that the detection result of the detection end is inaccurate, and re-detection is performed. If a fault point corresponding to a branch line is consistent with the fault point detected by a detection end corresponding to a branch line, it is determined that the detection result of the detection end is accurate, and the number of detections and the number of correct fault point locations corresponding to the detection end of the branch line are obtained from the database. The number of detections is divided by the number of correct fault point locations to obtain the accuracy of the detection corresponding to the detection end, and it is stored in the database. In this way, the accuracy of the fault point detection of each detection end corresponding to each branch line is determined.

[0037] The fault information monitoring module is used to use the power line fault detection device to obtain the fault waveform of the fault point corresponding to each branch line, and compare it with the fault waveform type intervals corresponding to the maintenance measures stored in the database, and then screen out the fault maintenance measures corresponding to the fault point of each branch line.

[0038] It should be noted that various fault types include but are not limited to single-phase grounding fault, two-phase short circuit and three-phase short circuit.

[0039] As an optional implementation method, the screening obtains fault maintenance measures for the fault points corresponding to each branch line, and the specific screening process is as follows: the fault waveform corresponding to the fault point of each branch line is compared with the fault waveform type intervals corresponding to the maintenance measures stored in the database. If the fault waveform corresponding to the fault point of a branch line is within the fault waveform type interval corresponding to the maintenance measures stored in the database, then the maintenance measures corresponding to the fault waveform type interval are used as the maintenance measures corresponding to the fault type of the branch line fault point, so as to obtain the maintenance measures corresponding to the fault type of the fault point of each fault line by screening.

[0040] The database is used to store the acquisition position, placement information, traveling wave signal amplitude and phase, detection information, traveling wave signal distortion data, traveling wave signal transmission time difference, fault waveform and each fault waveform type interval of each historical detection end.

[0041] The early warning terminal is used to issue an early warning when a fault occurs on a branch line.

[0042] The embodiment of the present invention selects the detection ends corresponding to the branch lines based on the collection positions of the detection ends corresponding to the branch lines at each historical time, monitors the fault points corresponding to the branch lines, and judges the accuracy of the detection of the fault points by the detection ends corresponding to the branch lines, selects the fault maintenance measures for the fault points corresponding to the branch lines, thereby executing the fault maintenance corresponding to the branch lines, and realizing efficient maintenance of the branch lines, which solves the deficiencies in the current technology. At the same time, based on the monitoring of the traveling wave signals of the branch lines by the power line fault detection device, the fault points can be quickly located, the fault processing rate can be improved, the inconvenience caused by the faults of the branch lines can be effectively reduced, the maintenance cost can be reduced, the maintenance difficulty of the maintenance personnel in maintaining the faulty branch lines can be reduced, the efficient maintenance of the faults of the branch lines of the distribution network can be realized, and the operation safety and stability of the branch lines of the distribution network can be improved.

[0043] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined in this specification, they shall all fall within the protection scope of the present invention.

Claims

1. The integrated application system for distribution network fault traveling wave is characterized by: include: The detection terminal screening module is used to obtain the collection positions of each historical detection terminal corresponding to each branch line of the distribution network from the database, and compare them, and at the same time obtain the placement information of each historical detection terminal corresponding to each branch line, analyze and obtain the placement difficulty coefficient of each historical detection terminal corresponding to each branch line, and screen the detection terminals corresponding to each branch line; Compare the collection positions of each detection end at each historical time corresponding to each branch line of the distribution network. The specific comparison process is as follows: Compare the collection positions of each historical detection terminal corresponding to each branch line of the distribution network. If there are single or multiple identical position options for the collection positions of each historical detection terminal corresponding to a branch line of the distribution network, then the identical number of each historical detection terminal corresponding to the branch line is counted, and the identical number of each historical detection terminal is compared with the set identical number interval of the detection terminal. If the identical number of the historical detection terminal is within the set identical number interval of the detection terminal, then the historical detection terminal is used as the detection terminal retained by the branch line. At the same time, the placement information of the branch line of the distribution network corresponding to each historical detection terminal when there are different options is counted, and then the placement difficulty is analyzed; The analysis obtains the placement difficulty coefficient of each branch line corresponding to each historical detection terminal. The specific calculation process is as follows: By calculation formula: , the analysis results are Branch line corresponding to The placement difficulty coefficient of the historical detection terminal , is the number of each branch line, , is any integer greater than 2, is the number of each historical detection terminal, , is any integer greater than 2, For the Branch line corresponding to The placement requirement time of each historical detection terminal, For the Branch line corresponding to The number of people assisting in placing historical detection terminals, For the Branch line corresponding to The number of placement aids at the historical detection end, The required time for setting the reference placement, Place the number of assistants for the set reference, Place the number of auxiliary devices for the set reference, , , They are the weight factor of the required placement time, the weight factor of the number of placement assistants, and the weight factor of the number of placement auxiliary devices. , , ; The screening obtains the detection ends corresponding to the branch lines, and the specific screening process is as follows: The placement difficulty coefficient of each historical detection end corresponding to each branch line is compared with the set placement difficulty threshold. If the placement difficulty coefficient of a historical detection end corresponding to a branch line is less than or equal to the set placement difficulty threshold, the historical detection end is used as the detection end of the branch line pair, so as to screen and obtain the detection ends corresponding to each branch line; The fault point analysis and confirmation module is used to place the power line fault detection device on each detection end corresponding to each branch line, and then monitor whether there is a fault point on each branch line, analyze and obtain the position interval of the fault point corresponding to each branch line, and analyze and obtain each fault point corresponding to each branch line, and determine the accuracy of the fault point detection of each detection end corresponding to each branch line; The fault information monitoring module is used to obtain the fault waveform of the fault point corresponding to each branch line by using the power line fault detection device, and compare it with the fault waveform type interval corresponding to the maintenance measures stored in the database, and then screen out the fault maintenance measures corresponding to the fault point of each branch line; The early warning terminal is used to issue an early warning when a fault occurs on a branch line.

2. The distribution network fault traveling wave integrated application system according to claim 1, characterized in that: The specific monitoring process of monitoring whether there is a fault point in each branch line is as follows: According to the power line fault detection device installed on each detection end corresponding to each branch line, the monitoring results of each detection end corresponding to each branch line are obtained, wherein the monitoring results include the existence of a fault point or the absence of an abnormal point. At the same time, the amplitude and phase of the traveling wave signal between each detection end corresponding to each branch line are obtained based on the detection device. If the amplitude and phase of the traveling wave signal between a detection end corresponding to a branch line are abnormally increased or attenuated, it is determined that there is a fault point in the branch line, otherwise it does not exist, so as to monitor whether there is a fault point in each branch line.

3. The distribution network fault traveling wave integrated application system according to claim 1, characterized in that: The analysis obtains the location interval of the fault point corresponding to each branch line, and the specific screening process is as follows: When a fault point occurs in each branch line, the detection information of the corresponding monitoring between each detection end and each detection end of each branch line is obtained, wherein the detection information includes wave velocity, reflection and refraction, and the wave velocity corresponding to the monitoring between each detection end and each detection end of each branch line is compared with the reference wave velocity interval stored in the database. At the same time, the reflection and refraction corresponding to the monitoring between each detection end and each detection end of each branch line are also compared with the reference reflection interval and reference refraction interval stored in the database. If the wave velocity corresponding to the monitoring between a detection end and a detection end of a branch line is not within the reference wave velocity interval stored in the database, and the reflection and refraction corresponding to the monitoring between the detection end and the detection end of the branch line are not within the reference reflection interval and reference refraction interval stored in the database, it is determined that there is a fault point between the detection end and the detection end of the branch line, and so on, the position interval of the fault point corresponding to each branch line is obtained by analysis.

4. The distribution network fault traveling wave integrated application system according to claim 1, characterized in that: The analysis obtains the fault points corresponding to each branch line, and the specific screening process is as follows: The location intervals of the fault points corresponding to each branch line are preset for corresponding points to obtain each point, and the traveling wave signal distortion data and the traveling wave signal transmission time difference of each point corresponding to the fault points of each branch line are obtained, and the traveling wave signal distortion data of each point corresponding to the fault points of each branch line are compared with the traveling wave signal distortion data interval stored in the database. At the same time, the traveling wave signal transmission time difference of each point corresponding to the fault points of each branch line is also compared with the traveling wave signal transmission time difference interval stored in the database. If the traveling wave signal distortion data of a point corresponding to a fault point of a branch line is within the traveling wave signal distortion data interval stored in the database, and the traveling wave signal transmission time difference of the point corresponding to the fault point of the branch line is not within the traveling wave signal transmission time difference interval stored in the database, then the point is determined to be a fault point, and the fault points corresponding to each branch line are obtained by analysis.

5. The distribution network fault traveling wave integrated application system according to claim 1, characterized in that: The accuracy of detecting the fault point of each detection terminal corresponding to each branch line is obtained by the judgment, and the specific judgment process is as follows: Compare the fault points corresponding to each branch line with the fault points detected by each detection end corresponding to each branch line. If a fault point corresponding to a branch line is inconsistent with the fault point detected by a detection end corresponding to a branch line, it is determined that the detection result of the detection end is inaccurate, and re-detection is performed. If a fault point corresponding to a branch line is consistent with the fault point detected by a detection end corresponding to a branch line, it is determined that the detection result of the detection end is accurate, and the number of detections and the number of correct fault point locations corresponding to the detection end of the branch line are obtained from the database. The number of detections is divided by the number of correct fault point locations to obtain the accuracy of the detection corresponding to the detection end, and it is stored in the database. This is used to determine the accuracy of the fault point detection of each detection end corresponding to each branch line.

6. The distribution network fault traveling wave integrated application system according to claim 1, characterized in that: The screening obtains the fault maintenance measures for the corresponding fault points of each branch line. The specific screening process is as follows: The fault waveform corresponding to each branch line fault point is compared with each fault waveform type interval corresponding to the maintenance measures stored in the database. If the fault waveform corresponding to a branch line fault point is within the fault waveform type interval corresponding to the maintenance measures stored in the database, the maintenance measures corresponding to the fault waveform type interval are used as the maintenance measures corresponding to the fault type of the branch line fault point, so as to screen and obtain the maintenance measures corresponding to the fault type of the fault point of each branch line.

7. The distribution network fault traveling wave integrated application system according to claim 1, characterized in that: It also includes a database, which is used to store the collection position, placement information, traveling wave signal amplitude and phase, detection information, traveling wave signal distortion data, traveling wave signal transmission time difference, fault waveform and each fault waveform type interval of each historical detection end.

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