OPGW optical cable health degree assessment method and system based on environmental parameters

Abstract

The invention discloses an OPGW optical cable health degree assessment method and system based on environment parameters, and the method comprises the steps: obtaining subjective weights corresponding to all environment parameters through the processing of an analytic hierarchy process according to preset environment parameters related to the health degree of an OPGW optical cable; according to the acquired environment parameter data of the plurality of OPGW optical cable objects, obtaining objective weights corresponding to the environment parameters through entropy method processing; combining the subjective weight and the objective weight through an optimal weighting method based on a sum of squares of deviations to obtain a combined weight corresponding to each environment parameter; performing data dimension reduction processing on preset environment parameters related to the health degree of the OPGW optical cable through a linear discriminant analysis method, and obtaining one-dimensional projection values of the environment parameter data of the plurality of acquired OPGW optical cable objects in combination with the combined weight of each environment parameter; and comparing the one-dimensional projection value with a preset health degree projection value threshold to obtain a health degree evaluation result.

Description

technical field [0001] The invention relates to the measurement and evaluation of OPGW optical cables, in particular to a method and system for evaluating the health of OPGW optical cables based on environmental parameters. Background technique [0002] Optical Fiber Composite Overhead Ground Wire (OPGW), the optical fiber is placed in the ground wire of the overhead high-voltage transmission line to form an optical fiber communication network on the transmission line. This structure combines both ground wire and communication double function. [0003] How to judge the health status of the OPGW optical cable in operation is a technical difficulty in the process of power operation and maintenance. At present, the health evaluation of OPGW optical cable is mainly to judge whether the OPGW optical cable is in a healthy state, a sub-healthy state or a fault state by measuring the optical path loss and strain of the optical core in the OPGW optical cable, that is, the stress and...

AI Technical Summary

Problems solved by technology

[0004] The above method uses distributed optical fiber sensing equipment to measure the OPGW optical cable to determine its health status. Due to the limited measurement distance of the measurement equipment (usually less than 200km), and the actual operating distance of the OPGW optical cable is long, it is impossible to comprehensively measure the health status of the OPGW optical cable. The health of the long-distance OPGW optical cable is evaluated by the data of the above measurement methods

[0005] At the same time, the above method needs to measure the optical fiber directly. The object of measurement can only be the spare core in the OPGW optical cable. The state of the core is difficult to achieve with current health assessment methods

Images