Title :
Effects of sampling in monitoring power system oscillations using on-line Prony analysis
Author :
Peng, J.C.-H. ; Nair, Nirmal-Kumar C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Auckland, Auckland
Abstract :
Wide area monitoring system (WAMS) using phasor measurement units (PMU) is being implemented for online oscillation monitoring using Prony analysis. However sampling at inappropriate intervals, though satisfying Nyquist-Shannon criterion, can still cause the Prony analysis to inaccurately estimate damping factors and oscillating frequencies. Hence, this paper investigates possible ways for checking the adequacy of sampling interval in Prony analysis. The condition number and total relative error methods are proposed to address the adequacy of WAMS sampling. In addition, a review of power system oscillations and its detection using Prony analysis will also be presented in this paper.
Keywords :
matrix algebra; oscillations; phase measurement; power system measurement; Nyquist-Shannon criterion; on-line Prony analysis; phasor measurement units; power system oscillation monitoring; sampling effects; wide area monitoring system; Frequency estimation; Guidelines; Phasor measurement units; Power system analysis computing; Power system measurements; Power system reliability; Power system simulation; Remote monitoring; Sampling methods; Singular value decomposition; Condition number; Power System Oscillations; Prony analysis; Wide-Area Monitoring System (WAMS);
Conference_Titel :
Power Engineering Conference, 2008. AUPEC '08. Australasian Universities
Conference_Location :
Sydney, NSW
Print_ISBN :
978-0-7334-2715-2
Electronic_ISBN :
978-1-4244-4162-4
