Evaluation of Optical Fiber Macrobendings in Temperature Sensor Dedicated for Power Transformer Monitoring
Abstract
Optical fiber sensing techniques are recognized as very promising in diagnostic and condition monitoring of power transformers. According to the IEC standard 60076-2, the winding hot-spot temperature can be designated with the optical fiber sensor. In this paper, the investigation of the influence of macrobending of the optical fiber temperature sensor on the sensing performance is presented. The obtained results prove that the optical fiber sensor wrapped six times around the 14 mm cylinder still provides temperature sensing abilities.
Keywords
GaAs sensor, monitoring, optical fiber, power transformer, temperature
Ocena wprowadzanych makrozgięć na światłowodzie na działanie czujnika temperatury dedykowanego do monitorowania transformatorów
Streszczenie
Sensory światłowodowe doskonale sprawdzają się w diagnostyce i monitorowaniu stanu transformatorów. Norma IEC 60076-2:2011 wskazuje na możliwość użycia czujników światłowodowych do pomiaru temperatury uzwojenia transformatora. W niniejszym artykule badany jest wpływ makrozgięć na działanie światłowodowego czujnika temperatury. Uzyskane dane potwierdzają, że czujnik nadal działa prawidłowo, pomimo wprowadzonego makrozgięcia w postaci sześciokrotnego zawinięcia światłowodu wokół cylindra o średnicy 14 mm.
Słowa kluczowe
monitorowanie, sensor GaAs, światłowód, temperatura, transformator
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