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An enhanced fiber-optic temperature sensor system for power transformer monitoring

2001; Institute of Electrical and Electronics Engineers; Volume: 50; Issue: 5 Linguagem: Inglês

10.1109/19.963173

1557-9662

G. Betta, Antonio Pietrosanto, Antonio Scaglione,

Analytical Chemistry and Sensors

The paper deals with a sensor for temperature measurements in fluids. The sensor is based on a fiber-optic sensing element and on microcontroller-based signal processing hardware. The physical principle behind its operation is briefly reviewed, and its application to power transformer hot-spot temperature measurement is reported. Laboratory experimental results are given for both sensor characterization and measurements carried out on a 25-kVA oil-cooled power transformer.