Title :
Analysis of time delay effects on wide area damping control
Author :
He, Jingbo ; Lu, Chao ; Jin, Xiaoming ; Li, Peng
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing
fDate :
Nov. 30 2008-Dec. 3 2008
Abstract :
Wide area damping control (WADC) is a novel technique used to solve the inter-area oscillation problem. Unlike the local control, time delay is involved in the transmission of wide area signals, which can not be ignored. In this paper, time delay effects on WADC are analyzed from the view of frequency domain. A new stability criterion is proposed to calculate the time tolerance based on Pade approximation. The stability criterion is verified by simulations of a two areas system with HVDC. The results show that high frequency oscillations can be caused by a certain value of time delay.
Keywords :
HVDC power transmission; approximation theory; damping; delays; oscillations; power system control; stability; HVDC; Pade approximation; interarea oscillation; local control; stability criterion; time delay; time tolerance; wide area damping control; wide area signals; Damping; Delay effects; Delay systems; Frequency domain analysis; HVDC transmission; PSCAD; Power grids; Power system stability; Stability criteria; Transfer functions;
Conference_Titel :
Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on
Conference_Location :
Macao
Print_ISBN :
978-1-4244-2341-5
Electronic_ISBN :
978-1-4244-2342-2
DOI :
10.1109/APCCAS.2008.4746134
