Monitoring of inter-area oscillations under ambient conditions using subspace identification
Monitoring of inter-area oscillations under ambient conditions using subspace identification
The damping of inter-area oscillations is a major concern for many power system operators. This paper presents a novel method for monitoring of inter-area oscillations based on system identification using subspace techniques and modal analysis. The method enables the detection of oscillatory modes as well as the damping and frequency of those from ambient data recorded during normal operation of the power system. Through modal observability which is also estimated, the parts of the grid participating in an oscillation mode can be determined. The method is suitable for real-time implementation. The paper demonstrates application of the method to measurements from the Nordic power system and to synthetic data. The technique can be used to increase operator situational awareness and provide early warning in case of potential for unstable inter-area mode oscillations
978-1-4244-4241-6
Larsson, Mats
1494b95f-26bb-4932-8690-13865dcc4591
Laila, Dina Shona
41aa5cf9-3ec2-4fdf-970d-a0a349bfd90c
26 July 2009
Larsson, Mats
1494b95f-26bb-4932-8690-13865dcc4591
Laila, Dina Shona
41aa5cf9-3ec2-4fdf-970d-a0a349bfd90c
Larsson, Mats and Laila, Dina Shona
(2009)
Monitoring of inter-area oscillations under ambient conditions using subspace identification.
2009 IEEE Power & Energy Society General Meeting (PES '09).
6 pp
.
(doi:10.1109/PES.2009.5275227).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The damping of inter-area oscillations is a major concern for many power system operators. This paper presents a novel method for monitoring of inter-area oscillations based on system identification using subspace techniques and modal analysis. The method enables the detection of oscillatory modes as well as the damping and frequency of those from ambient data recorded during normal operation of the power system. Through modal observability which is also estimated, the parts of the grid participating in an oscillation mode can be determined. The method is suitable for real-time implementation. The paper demonstrates application of the method to measurements from the Nordic power system and to synthetic data. The technique can be used to increase operator situational awareness and provide early warning in case of potential for unstable inter-area mode oscillations
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Published date: 26 July 2009
Venue - Dates:
2009 IEEE Power & Energy Society General Meeting (PES '09), 2009-07-26
Organisations:
Mechatronics
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Local EPrints ID: 353711
URI: http://eprints.soton.ac.uk/id/eprint/353711
ISBN: 978-1-4244-4241-6
PURE UUID: 62779111-0bdc-4172-aed0-b5f89f876b1c
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Date deposited: 14 Jun 2013 08:54
Last modified: 14 Mar 2024 14:08
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Author:
Mats Larsson
Author:
Dina Shona Laila
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