DocumentCode :
1594283
Title :
Nonlinear damping computation and envelope detection using Hilbert transform and its application to power systems wide area monitoring
Author :
Laila, D.S. ; Larsson, M. ; Pal, B.C. ; Korba, P.
Author_Institution :
Electr. & Electron. Eng. Dept., Imperial Coll. London, London, UK
fYear :
2009
Firstpage :
1
Lastpage :
7
Abstract :
An important feature of an oscillation is the damping characterization. For a system, the damping characteristic of the oscillation that occurs on its states or outputs gives the information of the stability of the system. There are various techniques to compute the damping ratio of a linear model of a system, but the tools that apply to nonlinear systems are scarce. In this paper, we utilize the Hilbert transform of nonlinear and nonstationary oscillatory signals to compute the instantaneous damping of the signals. The technique is applied to the computation of the damping ratio of power systems signals that contain inter area oscillations. This damping computation is important for power system monitoring.
Keywords :
Hilbert transforms; damping; nonlinear systems; power system measurement; power system stability; Hilbert transform; envelope detection; instantaneous damping; inter area oscillations; linear model; nonlinear damping computation; nonlinear system; nonstationary oscillatory signal; power system wide area monitoring; system stability; Damping; Envelope detectors; Frequency; Monitoring; Power system dynamics; Power system interconnection; Power system modeling; Power system reliability; Power system stability; Power systems; Damping ratio; Hilbert transform; Instantaneous damping; Inter area oscillation; Power system monitoring; Second order systems;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power & Energy Society General Meeting, 2009. PES '09. IEEE
Conference_Location :
Calgary, AB
ISSN :
1944-9925
Print_ISBN :
978-1-4244-4241-6
Type :
conf
DOI :
10.1109/PES.2009.5275889
Filename :
5275889
Link To Document :
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