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Estimation of Electro-Mechanical Mode Parameters using Frequency Measurements

Hemmingsson, Morten LU ; Samuelsson, Olof LU ; Pedersen, K. O. H. and Nielsen, A. H. (2001) IEEE Power Engineering Society Winter Meeting In Power Engineering Society Winter Meeting, 2001. IEEE 3.
Abstract
Oscillation frequency and damping of electro-mechanical modes in a power system have traditionally been determined from events caused by large disturbances such as line switchings or generator tripping. Recent papers have shown the possibility to extract this information during normal operation from measurements of power through, or angle difference across, a transmission line. In this paper these methods are applied to frequency measurements from a 230 V wall-outlet. If accurate frequency and phase estimates can be obtained, this can be used for load control to damp electro-mechanical oscillations. Doing this in the distribution system is easier than in the transmission system. Using frequency for this has the advantage that this signal... (More)
Oscillation frequency and damping of electro-mechanical modes in a power system have traditionally been determined from events caused by large disturbances such as line switchings or generator tripping. Recent papers have shown the possibility to extract this information during normal operation from measurements of power through, or angle difference across, a transmission line. In this paper these methods are applied to frequency measurements from a 230 V wall-outlet. If accurate frequency and phase estimates can be obtained, this can be used for load control to damp electro-mechanical oscillations. Doing this in the distribution system is easier than in the transmission system. Using frequency for this has the advantage that this signal is available everywhere. It would thus be convenient if the estimation of modes and damping could be done in the distribution system. The results show that it is much harder to detect electro-mechanical mode information from frequency than from angle difference or power. However, it is possible to find the frequency of two electromechanical modes whereas the damping has too large an uncertainty. Fundamental problems when using frequency for mode estimation are further discussed (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
circuit oscillations damping frequency measurement power distribution faults power system measurement power system parameter estimation
in
Power Engineering Society Winter Meeting, 2001. IEEE
editor
Samuelsson, Olof
volume
3
conference name
IEEE Power Engineering Society Winter Meeting
external identifiers
  • Scopus:0038307691
ISBN
0-7803-6672-7
DOI
10.1109/PESW.2001.917240
language
English
LU publication?
yes
id
3dc34b90-77fa-46f5-b684-e44a64466ad8 (old id 4357695)
date added to LUP
2014-11-26 16:36:13
date last changed
2017-01-01 08:16:11
@inproceedings{3dc34b90-77fa-46f5-b684-e44a64466ad8,
  abstract     = {Oscillation frequency and damping of electro-mechanical modes in a power system have traditionally been determined from events caused by large disturbances such as line switchings or generator tripping. Recent papers have shown the possibility to extract this information during normal operation from measurements of power through, or angle difference across, a transmission line. In this paper these methods are applied to frequency measurements from a 230 V wall-outlet. If accurate frequency and phase estimates can be obtained, this can be used for load control to damp electro-mechanical oscillations. Doing this in the distribution system is easier than in the transmission system. Using frequency for this has the advantage that this signal is available everywhere. It would thus be convenient if the estimation of modes and damping could be done in the distribution system. The results show that it is much harder to detect electro-mechanical mode information from frequency than from angle difference or power. However, it is possible to find the frequency of two electromechanical modes whereas the damping has too large an uncertainty. Fundamental problems when using frequency for mode estimation are further discussed},
  author       = {Hemmingsson, Morten and Samuelsson, Olof and Pedersen, K. O. H. and Nielsen, A. H.},
  booktitle    = {Power Engineering Society Winter Meeting, 2001. IEEE},
  editor       = {Samuelsson, Olof},
  isbn         = {0-7803-6672-7},
  keyword      = {circuit oscillations damping frequency measurement power distribution faults power system measurement power system parameter estimation},
  language     = {eng},
  title        = {Estimation of Electro-Mechanical Mode Parameters using Frequency Measurements},
  url          = {http://dx.doi.org/10.1109/PESW.2001.917240},
  volume       = {3},
  year         = {2001},
}