Modelling and Simulation of Optical Fibre based Temperature Sensor for Monitoring Dry Type Transformers

摘要

Breakdown of transformers prove to be very expensive and inconvenient because it takes a lot of time for their replacement. During breakdown the industry also incurs heavy losses because of stoppage in production line. A system for monitoring the temperature of transformers is required. Existing sensors cannot be used for monitoring the temperature of transformers because they are sensitive to electrical signals and can cause sparking which can trigger fire since there is oil in transformers cooling coils. Optical fibres are electrically inert so this system will prove to be ideal for this application. Results of investigations carried out by simulating a configuration of optical fibre temperature sensor for transformers based on micro bending using MATLAB7.5 as a simulation tool to evaluate the effectiveness of this sensor have been communicated through this paper.