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

fYear

2008

fDate

Nov. 30 2008-Dec. 3 2008

Firstpage

758

Lastpage

761

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APCCAS.2008.4746134

Filename

4746134