Title :
ROCOF protection in distributed system with noise and non-linear load
Author :
Liu, Bohan ; Thomas, David
Author_Institution :
Univ. Of Nottingham, Nottingham, UK
Abstract :
In this paper, a new Prony´s method for frequency estimation is investigated to calculate df/dt. for the rate of change of frequency (ROCOF) protection technique. This algorithm provides accurate and fast frequency calculation for fault detection. System with noise and non-linear load are added during simulation to provide a system similar to real. During non-islanding situation (load adding or adding), in order to avoid ROCOF nuisance tripping, a new interlock function is developed.
Keywords :
fault diagnosis; frequency estimation; power distribution protection; Prony´s method; ROCOF protection; distributed system; fault detection; frequency estimation; interlock function; noise; non-linear load; rate of change of frequency protection; Circuit breakers; Frequency estimation; Generators; Impedance; Relays; Time frequency analysis; ROCOF; new Prony´s method; noise and non-linear load; non-islanding;
Conference_Titel :
Environment and Electrical Engineering (EEEIC), 2011 10th International Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4244-8779-0
DOI :
10.1109/EEEIC.2011.5874715
