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Interpreting regional frequencies from synchronized phasor measurement in multi-area power systems

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Authors
Vahidnia, A.
Ledwich, G.
Palmer, E.
Ghosh, Arindam
Date
2011
Type
Conference Paper

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Citation
Vahidnia, A. and Ledwich, G. and Palmer, E. and Ghosh, A. 2011. Interpreting regional frequencies from synchronized phasor measurement in multi-area power systems, in - (ed), Power and Energy Society General Meeting, 2011 IEEE, Jul 24 2011. San Diego, CA: Institute of Electrical and Electronics Engineers ( IEEE ).
Source Title
2011 IEEE Power and Energy Society General Meeting
Source Conference
Power and Energy Society General Meeting, 2011 IEEE
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Abstract

In this paper a new approach is proposed for interpreting of regional frequencies in multi machine power systems. The method uses generator aggregation and system reduction based on coherent generators in each area. The reduced system structure is able to be identified and a kalman estimator is designed for the reduced system to estimate the inter-area modes using the synchronized phasor measurement data. The proposed method is tested on a six machine, three area test system and the obtained results show the estimation of inter-area oscillations in the system with a high accuracy