Keywords
Wide Area Measuring System
spectrum analysis
modal analysis of power systems
dominant oscillation frequency
damping низькочастотні коливання
система моніторингу перехідних режимів
спектральний аналіз
модальний аналіз
демпфування
How to Cite
Abstract
Increased progress of power systems has led to a structure of close generator groups connected to other groups by weak transmission lines. This has been known to cause oscillations were these groups oscillate against each other in an inter area fashion. This implies that power oscillates between areas and thus diminishes the transmission capability of the interconnected system. This paper describes the identifying modes of oscillations in interconnected power systems by means of using recordings of a Wide Area Measuring System. To detect the dominant oscillation frequency, the Fast Fourier Transform is applied. The algorithm is tested on known test system and results were compared with the results of modal analysis of power system. It is obvious from the analysis that further investigations are necessary to improve system damping. This is an important goal not only to ensure reliable system operation but also to improve transmission capacity of the grid with the existing high voltage lines. References 5, tables 2, figures 2.
References
Bеrdin A., Gerasimov A., Zakharov Yu., Kovalenko P. Methods of study of nonlinear and non-stationary properties of low-frequency oscillations in the system / 4-ia Mezhdunarodnaia tekhnicheskaia konferentsiia "Sovremennye napravleniia razvitiia sistem releinoi zashchity i avtomatiki energosistem". – Ekaterinburg, 2013. CD-ROM CIGRE. – Рp. 2.2–5. (Rus)
Stability of power systems. Guidelines. – SОU-N МЕV 40.1-00100227-68:2012. (Ukr)
Investigation of influence of low-frequency oscillations to operating modes of IPS of Ukraine in the regulation of frequency and active power. Stage II. Estimation of influence of low-frequency oscillations on regulating the balance of power flowing in international and internal crossing. Zvit pro naukovo-doslidnu robotu. – Кyiv: Natsionalnyi Tekhnichnyi Universytet Ukrainy «КPІ», 2013. – 150 p. (Ukr)
D.Wilson, P.McNabb, J.Bialek. Classification of mode damping and amplitude in power system using synchrophasor measurements and classification trees // IEEE Transactions on power systems. − May 2013. – Vol.28. – No.2. – 9 p.
Graham Rogers. Power System Oscillations. – 2000, Kluwer Academic Publishers, Boston, London, Utrecht.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2023 Tekhnichna Elektrodynamika