Study of Fiber Grating Strain Sensing to On-Line Monitoring for Optical Cable of Electric Power System

Failure and security risks of communication optical cable in electric power system caused by anomalous changing of strain have been investigated, the current situation of the strain monitoring system for optical cable of electric power system has been introduced, and the principle and features of measuring the strain by using fiber grating sensing technology have been presented. The new method that can be used in strain monitoring for communication optical cable of key position in electric power system has been put forward, and fiber grating sensor scheme has been designed. Finally, several key technical problems in its practical application have been analyzed in detail.