Active traveling wave location method, system and storage medium for distribution network faults
A technology for fault location of distribution network and traveling wave, applied in fault location, fault detection according to conductor type, measurement of electricity and other directions, which can solve the problems of long positioning time and increased fault loss.
Active Publication Date: 2022-05-03
HUNAN IND POLYTECHNIC +1
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[0005] In order to improve the defect that it may be necessary to input traveling wave signals multiple times to locate the fault point during the fault point detection process, which may easily lead to longer positioning time and increase the loss caused by the fault, this application provides an active traveling wave signal for distribution network faults Positioning method, system and storage medium
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[0055] The following is attached Figure 1-6 The application is described in further detail.
[0056] refer to figure 1 , is an active traveling wave location method for distribution network faults disclosed in this application, including step S100, step S200, step S3A00, step S3B00 and step S400, wherein step S3A00 and step S3B00 are parallel steps.
[0057] Step S100, keeping time synchronization at both ends of the distribution network line.
[0058] refer to figure 2 Specifically, step S100 can be divided into step S110, step S120, step S12A and step S12B, wherein step S12A and step S12B are parallel steps.
[0059] In step S110, both ends of the distribution network are wirelessly connected to the global satellite navigation system through the preset first time synchronization system and the preset second time synchronization system.
[0060] Specifically, both the first time synchronization system and the second time synchronization system can use a GPS antenna to c...
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This application relates to an active traveling wave location method, system and storage medium for distribution network faults based on multi-sampling points. The attenuation change of the traveling wave signal in the distribution network line, analyze and obtain the number of line branch points in the distribution network line; input the traveling wave signal to both ends of the distribution network line and record the initial amplitude of the traveling wave signal, the traveling wave signal When reaching the fault point, total reflection will be performed, and the traveling wave signals at both ends of the distribution network line will be screened according to the number of line branch points and the attenuation coefficient in the distribution network line, and the reflected traveling wave signal will be screened out; The reflected traveling wave signal received by the wave detection device locates the fault point of the distribution network line and assigns maintenance personnel to repair it. The application has the effect of shortening the time for locating fault points in distribution network lines.
Description
technical field [0001] The present application relates to the technical field of distribution network fault detection, in particular to an active traveling wave location method, system and storage medium for distribution network faults. Background technique [0002] Faults in distribution network lines will cause interruption of power supply to users, and may cause fires in severe cases. However, manual troubleshooting of fault points is time-consuming and laborious. Quick and accurate fault location can facilitate timely repair of distribution network lines and reduce damage caused by faults. loss. [0003] There are mainly two methods for fault location in power systems: impedance method and traveling wave method, but the impedance method is greatly affected by factors such as fault resistance, line load, transformer error and power supply parameters, so the effect in practical applications is not ideal , while the traveling wave location method is to determine the distan...
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IPC IPC(8): G01R31/08
CPCG01R31/086G01R31/088
Inventor 陈义黄红伟戴石贵陈剑侠
Owner HUNAN IND POLYTECHNIC