Basic transformer Life Characteristics Volume 2:Evaluation of a Fluoroptic™ Thermometer as a Hot Spot Sensor for Power Transformers

摘要

The utility industry has long expressed the need for temperature instrumentation capable of monitoring the hottest spot of a transformer winding in service.\nThe Fluoroptic temperature sensor concept developed by Luxtron Corporation is evaluated in this report. The sensing element consists of an optical fiber with a temperature sensitive tip made of a rare earth phosphor. The excellent dielectric properties of probe materials, and the results of short-time survival studies on measuring probes and accessories in a simulated transformer environment tend to confirm that this technology may be suitable for transformer service.\nSpecific design and material problems which must be resolved before a viable system can be developed are identified in the report.