Title :
A tutorial on ferroresonance
Author_Institution :
ABB Inc., Raleigh, NC, USA
fDate :
March 31 2014-April 3 2014
Abstract :
Ferroresonance is a widely studied phenomenon but it is still not well understood because of its complex behavior. It is “fuzzy-resonance.” A simple graphical approach using fundamental frequency phasors has been presented to elevate the readers understanding. Its occurrence and how it appears is extremely sensitive to the transformer characteristics, system parameters, transient voltages and initial conditions. More efficient transformer core material has lead to its increased occurrence and it has considerable effects on system apparatus and protection. Power system engineers should strive to recognize potential ferroresonant configurations and design solutions to prevent its occurrence.
Keywords :
capacitance; ferroresonant circuits; inductance; relay protection; relays; thermal stresses; transformer cores; transient analysis; apparatus failure; dielectric stresses; ferroresonance; fuzzy-resonance; high current spikes; nonlinear transformer magnetizing inductance; overvoltages; power system circuits; thermal stresses; transient disturbance; Circuit faults; Fuses; Inductance; Saturation magnetization; Tutorials;
Conference_Titel :
Protective Relay Engineers, 2014 67th Annual Conference for
Conference_Location :
College Station, TX
Print_ISBN :
978-1-4799-4740-9
DOI :
10.1109/CPRE.2014.6799036
