Cicero Martelli, Jean Carlos Cardozo da Silva, Daniel Pipa, Marco José da Silva, Carlos Zamarreño, John Canning, Pedro Schaphauser, Guilherme Dutra, Rafael Daciuk, José Galvão, Felipe Mezzadri, Andre Renzo, Uilian Dreyer, Guilherme Weber, Cesar Janeczko, Otoniel da Rocha
The use of photonic sensors to monitor horses is presented and reviewed. Results are very promising and can be used in other areas to monitor animals, machines or industrial processes.
A distributed temperature sensing (DTS) system is used to monitor the surface temperature of a high power hydroelectric generator. Two sensing fibers were installed; one is bare fiber whilst the other is jacketed with a Teflon® protection, in two distinct configurations: first, they were fixed parallel to the stator bars; secondly, they were wrapped around the stator surface. The fibers were embedded on the stator surface by using an electrically insulating resin which does not interfere with the generator operation. This technique can be used as a predictive maintenance tool.
Erlon Vagner da Silva, Uilian José Dreyer, Kleiton de Morais Sousa, Valderi Junot Babinski, Jonas Somenzi, Felipe Mezzadri, Ivo de Lourenço Junior, Cicero Martelli, Jean Carlos Cardozo da Silva
The instrumentation of a high power generator and its complementary systems including the turbine bearings is presented and discussed. The generator consists of a 175MW hydroelectric generator installed in the Salto Osório power plant in the southern region of Brazil. Results show good agreement with the already existing instrumentation and demonstrate the technology potential for a full optical fiber sensing system to monitor these large machines.
Cicero Martelli, Erlon da Silva, Kleiton de Morais Souza, Felipe Mezzadri, Jonas Somenzi, Marcos Crespin, Hypolito Kalinowski, Jean Carlos Cordoza da Silva
The surface temperature of a high power generator stator in operation at a hydroelectric power plant is measured using
fiber Bragg grating sensors. Insulation breakdown due to high voltage is a major problem in large electric generators and
very hard to detect at early stages. Giving the high temperatures that raise from this process the insulation degradation
can be detected as function of temperature. Fiber Bragg grating temperature sensors appear is a promising technology
since they can easily be embedded into the insulation with no harm for the generator.
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