Title :
Design, construction and operation of the Fast Protection System of the windings of RFX
Author :
Bellina, Fabrizio ; Chitarin, Giuseppe ; Guamieri, M. ; Trevisan, Francesco
Author_Institution :
Dept. of Electr. Eng., Padova Univ., Italy
fDate :
7/1/1994 12:00:00 AM
Abstract :
The protection of the windings of RFX against fast electric faults relies on an original dedicated Fast Protection System able to operate within 1 ms. The first ring of the protection chain is the fault protection system of the winding, named RGM, that consists of: about hundred highly reliable voltage and current probes, all electric signal lines and an analog-digital device where signals are processed and logic alarms are generated. RGM is an original machine that required a careful design and manufacturing work. After a long test and adjustment phase it now operates properly. It has already operated against some earth faults which, due to low level of earth current, mere not dangerous for the machine but very hard to detect
Keywords :
machine windings; overvoltage protection; power system protection; superconducting magnets; RFX windings; all electric signal lines; analog-digital device; current probes; earth faults; fast electric faults; fast protection system; logic alarms; voltage probes; Analog-digital conversion; Earth; Logic devices; Manufacturing; Probes; Protection; Signal generators; Signal processing; Testing; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
