An Augmented Prony Method for Power System Oscillation Analysis Using Synchrophasor Data

Moossa Khodadadi Arpanahi, Meysam Kordi, Roozbeh Torkzadeh, Hassan Haes Alhelou and Pierluigi Siano
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Moossa Khodadadi Arpanahi: Department of Electrical and Computer Engineering, Isfahan University of Technology (IUT), Isfahan 84156-83111, Iran
Meysam Kordi: Intelliwide Company, Ergonomic and Capable Products for Power Systems, Isfahan 8173986561, Iran
Roozbeh Torkzadeh: Institute of Science and Technology, Universidad Loyola Andalucía, Campus de Palmas Altas, No. 1, Energy Solar St., 41014 Seville, Spain
Hassan Haes Alhelou: Department of Electrical and Computer Engineering, Isfahan University of Technology (IUT), Isfahan 84156-83111, Iran
Pierluigi Siano: Department of Management & Innovation Systems, University of Salerno, 84084 Salerno, Italy

Energies, 2019, vol. 12, issue 7, 1-17

Abstract: Intrinsic mode functions (IMFs) provide an intuitive representation of the oscillatory modes and are mainly calculated using Hilbert–Huang transform (HHT) methods. Those methods, however, suffer from the end effects, mode-mixing and Gibbs phenomena since they use an iterative procedure. This paper proposes an augmented Prony method for power system oscillation analysis using synchrophasor data obtained from a wide-area measurement system (WAMS). In the proposed method, in addition to the estimation of the modal information, IMFs are extracted using a new explicit mathematical formulation. Further, an indicator based on an energy and phase relationship of IMFs is proposed, which allows system operators to recognize the most effective generators/actuators on specific modes. The method is employed as an online oscillation-monitoring framework providing inputs for the so-called wide-area damping control (WADC) module. The efficacy of the proposed method is validated using three test cases, in which the IMFs calculation is simpler and more accurate if compared with other methods.

Keywords: power system oscillations; stability; Prony method; intrinsic mode functions (IMFs); wide-area measurement system (WAMS); phasor measurement units (PMUs) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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