Method for realizing early warning and positioning of malfunctions for power cable network

Abstract

The invention discloses a method for realizing early warning and positioning of malfunctions for a power cable network, which comprises the following steps of: starting an optical time-domain reflectometer (OTDR) by a manual or an automatic way to test an appointed fiber to acquire optical cable test data, wherein connecting lines of all sampling points form an OTDR curve of a fiber chain; forming an upward step index reflective event by reflection of light caused by an optical connector, fractures and ending points; forming a downward step index non-reflective event by bending and splicing the optical fiber which increases the attenuation of the optical fiber; finding the step index points of the curve through data analysis and determining the optical fiber event points such as optical fiber head end, tail end, optical fiber connector and splicing points and the like; determining the operation state of the optical fiber through comparison with reference data and the change of attenuation data; and sending the early warning information when the data change exceeds the early warning threshold. The invention can be used for emergency early warning and positioning when the optical fiber network degrades and is in emergent cases so that the anti-damage capacity of the communication network is strengthened and the occurrence of optical fiber blockage is reduced to a great extend.

Description

technical field

[0001] This method is mainly used for the optical cable network of the power communication system, and can also be used for telecom operators such as China Telecom, China Unicom, China Netcom and China Mobile, as well as all enterprises that use optical cables as transmission lines, to provide network fault diagnosis, performance monitoring, Resource scheduling management, network management and other services. Background technique

[0002] In recent years, there are various professional application systems for the monitoring and management of communication equipment in the power system. The monitoring system has been put into the line, which has played a certain role in improving the level of line operation and maintenance management, timely discovering and solving the fault problems in the line, and improving the level of safe operation of the line. However, the system construction is mainly carried out around static optical cable resource management and o...

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