Optical cable fault positioning method and device based on distributed temperature measurement optical fibers

Abstract

The invention relates to an optical cable fault positioning method and device based on distributed temperature measurement optical fibers. The method comprises the following steps: constructing a first decision tree model according to cable fault information and corresponding distributed temperature measurement optical fiber working state information; determining fault association information of each node and an adjacent node thereof according to the communication routing table of the distributed temperature measurement optical fiber; constructing a second decision tree model according to thefault association information and the communication fault information of each node and the adjacent node; constructing a third decision tree model according to the optical cable fault time, the optical cable fault frequency and the municipal engineering construction information; determining an optical cable fault positioning model according to the decision tree model and an evolutionary algorithm;and positioning faults according to the optical cable fault positioning model and the fault information. The machine learning model is used for classifying the fault information and fusing the faultinformation through the evolutionary algorithm, fault positioning is convenient and accurate, and reliability is high.

Description

technical field [0001] The invention belongs to the field of data processing and machine learning of distributed temperature-measuring optical fibers, and in particular relates to an optical cable fault location method and device based on distributed temperature-measuring optical fibers. Background technique [0002] With the development of distributed optical fiber sensing technology, the temperature distribution information of the power cable along the line can be obtained by using a temperature measuring optical fiber. The temperature measurement of temperature measuring optical fiber is generally obtained through the optical signal intensity or frequency information in the optical fiber. The equipment that realizes optical signal measurement is called distributed optical fiber temperature measurement equipment. The temperature measuring instrument based on optical fiber Raman scattering, based on optical fiber Brillouin Scattering strain and temperature gauges and strain...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of difficult cable fault location and poor reliability of results in distributed temperature measuring optical fibers, the first aspect of the present invention provides a cable fault location method based on distributed temperature measuring optical fibers, including the following steps: obtaining cable fault information and the corresponding distributed temperature measurement optical fiber working status information, constructing a first decision tree model according to the cable fault information and the corresponding distributed temperature measuring optical fiber working status information; obtaining the communication routing table and communication routing table of the distributed temperature measuring optical fiber Fault information; determine the fault association information of each node and its adjacent nodes according to the communication routing table of the distributed temperature measurement optical fiber; construct a second decision tree according to the fault association information and communication fault information of each node and adjacent nodes Model; construct the third decision tree model according to the optical cable failure time, the frequency of the optical cable failure and the municipal engineering construction information; determine the optical cable fault location model according to the first decision tree model, the second decision tree model, the third decision tree model and the evolutionary algorithm ; According to the working status information of the distributed temperature measurement optical fiber to be tested, communication fault information, municipal engineering construction information and the cable fault location model to locate the fault of the distributed temperature measurement optical fiber to be tested

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