Electric discharge detection and localization using a distributed optical fiber vibration sensor
| Autor: | Igor Brutkowski Vieira da Costa, Carlos R. Zamarreño, Guilherme Heim Weber, Daniel R. Pipa, Aritz Ozcariz, Jose Rodolfo Galvao, Cicero Martelli, Danilo Fernandes Gomes, Jean Carlos Cardozo da Silva, Marco Jose da Silva |
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| Přispěvatelé: | Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica, Electrónica y de Comunicación, Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko, Elektroniko eta Telekomunikazio Saila, Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Optical fiber
Materials science Acoustics Sagnac interferometry 02 engineering and technology 01 natural sciences law.invention 010309 optics 020210 optoelectronics & photonics law Partial discharge 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Instrumentation Electrical conductor Optical fiber sensor Distributed sensor Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Interferometry Electric power transmission Control and Systems Engineering Fiber optic sensor Electric discharge Electric power |
| Zdroj: | Academica-e. Repositorio Institucional de la Universidad Pública de Navarra instname |
| Popis: | Partial discharges are a type of electric discharge that cause localized breakdowns in a small portion of an insulating material without forming a complete rupture. In high power electric machines as well as in transmission lines, partial discharges are caused by the degradation and/or the presence of defects in the insulation. The damage caused by the partial discharges can be either thermal, mechanical or chemical and can cause progressive deterioration of the insulation and lead to catastrophic failure causing serious safety risks. In this work a Distributed Optical Fiber Sensor System (DOFS) for vibration measurements based on Sagnac interferometry is proposed. This system uses acoustic wave emission phenomena to detect and locate electric discharges in electric machines and insulated electrical cables. Two experiments were carried out evaluating the performance of the system. Electric discharges were measured firstly over a conductive board with an attached 10 m long flat-coiled optical fiber sensor and secondly, over a 1.20 m long electrical cable with an optical fiber sensor longitudinally attached to it. Results demonstrate that due to the high sensitivity of the system it is possible to detect partial discharges in both proposed experiments. This effect is observed even with a theoretical fiber optical sensing spatial resolution of approximately 50 m. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001. |
| Databáze: | OpenAIRE |
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