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A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

A Silicon-tipped Fiber-optic Sensing Platform with High Resolution and Fast Response

Published on: January 7, 2019

Hydroelectric Plant Safety: Real-Time Monitoring Utilizing Fiber-Optic Sensors.

Renato Luiz Faraco¹, Felipe Barino¹, Deivid Campos¹

¹Instrumentation and Telemetry Laboratory, Federal University of Juiz de Fora, Juiz de Fora 36036-900, Brazil.

Sensors (Basel, Switzerland)

|July 27, 2024

Summary

Fiber-optic sensors (FOSs) offer robust monitoring for hydroelectric plants. This study developed a Fiber Bragg Grating (FBG) sensor array to detect turbine grid deformations, enhancing plant safety and efficiency.

Keywords:

deformation fiber Bragg gratings hydraulic power plant optical sensors structural health monitoring

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Last Updated: Jun 18, 2025

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Area of Science:

Hydroelectric Power Engineering
Sensor Technology
Structural Health Monitoring

Background:

Hydroelectric plants require rigorous monitoring for safe and efficient operation.
Traditional monitoring systems face limitations in challenging industrial environments.
Fiber-optic sensors (FOSs) present advantages like electromagnetic interference immunity and low signal loss.

Purpose of the Study:

To develop and implement an advanced monitoring system for hydroelectric plant turbine protective grids.
To utilize Fiber Bragg Gratings (FBGs) for precise measurement of deformation and temperature.
To enhance the safety and operational efficiency of the Santo Antônio Hydroelectric Plant.

Main Methods:

Development of a sensor array incorporating Fiber Bragg Gratings (FBGs).
Deployment of the FBG sensor array within the protective grids of turbines.
Real-world implementation to measure deformation and temperature under operational conditions.

Main Results:

The FBG sensor array successfully measured deformation and temperature in the turbine protective grids.
Identified deformation peaks correlated with potential water flow obstructions.
Demonstrated the feasibility of FOSs for real-time monitoring in hydroelectric environments.

Conclusions:

Fiber-optic sensors, specifically FBG arrays, provide a reliable solution for monitoring critical infrastructure in hydroelectric plants.
The developed system effectively detects anomalies indicative of operational risks.
Implementation significantly contributes to improved plant safety and operational efficiency.