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Development of power system protection based on optical current measurement

Nasir, Muhammad and Dysko, Adam and Booth, Campbell and Niewczas, Pawel and Orr, Philip and Fusiek, Grzegorz (2013) Development of power system protection based on optical current measurement. In: 48th Universities' Power Engineering Conference (UPEC 2013), 2013-09-02 - 2013-09-05.

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Abstract

A theoretical evaluation of a novel, all-optical differential current protection scheme employing low voltage piezoelectric transducers, fiber Bragg grating sensors and Rogowski coils is presented in this paper. The optical power reflected from the sensors is monitored by means of a single photodetector, whereas fault occurrence is detected by a simple optoelectronic threshold detector. We demonstrate through simulations that an immediate response to an increase in differential current can be achieved even at low voltage levels such as these generated by Rogowski coils providing a low-cost and fast-acting fault detection system.