Autor(es): Silva, Ricardo M. ; Martins, Hugo ; Nascimento, Ivo ; Baptista, José M. ; Lobo Ribeiro, Antonio B. ; Santos, José L. ; Jorge, Pedro ; Frazão, Orlando
Data: 2012
Identificador Persistente: http://hdl.handle.net/10284/7916
Origem: Repositório Institucional - Universidade Fernando Pessoa
Assunto(s): Optical current sensors; Magnetooptic current sensors; Fiber optic current sensors; Faraday effect
The intrinsic advantages of optical sensor technology are very appealing for high voltage applications and can become a valuable asset in a new generation of smart grids. In this paper the authors present a review of optical sensors technologies for electrical current metering in high voltage applications. A brief historical overview is given together with a more detailed focus on recent developments. Technologies addressed include all fiber sensors, bulk magneto-optical sensors, piezoelectric transducers, magnetic force sensors and hybrid sensors. The physical principles and main advantages and disadvantages are discussed. Configurations and strategies to overcome common problems, such as interference from external currents and magnetic fields induced linear birefringence and others are discussed. The state-of-the-art is presented including commercial available systems.
