19 April 2013 Brush wear and dust accumulation fiber-optic sensor system for synchronous compensators online monitoring
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Abstract
An electro-optical sensor system for monitoring synchronous compensators in the electrical distribution network is presented. The fiber-optic sensor system is based on two main technologies: optical bend loss sensors for monitoring the brush wear and, free-space optics to determine the dust accumulation from brush wear. Both techniques are characterized to monitor the parameters by means of simple optical power readings. In order to avoid optical power fluctuations in the fiber optics link from interrogation system to the synchronous compensators, bend-loss insensitive fibers are used. The low-cost interrogation system consists on one laser, optical splitters and 80 photodetectors to independently monitor each one of the synchronous compensators’s brushes. This setup ensures an ease installation and avoid cascaded fault that a serial configuration could originates, thus increasing reliability of the sensor system.
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Claudio Floridia, Livia R. Alves, Fábio R. Bassan, Antonio A. Juriollo, Flávio Borin, Afonso Rafael Cunha Souza, "Brush wear and dust accumulation fiber-optic sensor system for synchronous compensators online monitoring", Proc. SPIE 8692, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2013, 86924A (19 April 2013); doi: 10.1117/12.2009021; https://doi.org/10.1117/12.2009021
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