Detection and Analysis of Electromechanical Oscillation in Power Systems with Low-Sampled Data Using Modal Analysis Methods

The paper presents the possibilities of using vibroacoustic methods in the study of the technical condition of designed multimedia mobile scenes. In particular, the possibility of implementing modal analysis methods in modelling and diagnostic research process has been presented. The use of virtual methods enables diagnostic tests both at the design stage and at the stage of normal operation, whereas modal methods help to explain the nature of the work of the element under investigation.

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Modal analysis of power systems through natural excitation technique

2014 IEEE PES General Meeting | Conference & Exposition ◽

10.1109/pesgm.2014.6939863 ◽

2014 ◽

Cited By ~ 1

Author(s):

Janne Seppanen ◽

Jukka Turunen ◽

Matti Koivisto ◽

Nand Kishor ◽

Liisa Haarla

Keyword(s):

Power Systems ◽

Modal Analysis ◽

Natural Excitation Technique

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Voltage security assessment of large power systems using modal analysis

2011 International Conference on Emerging Trends in Electrical and Computer Technology ◽

10.1109/icetect.2011.5760102 ◽

2011 ◽

Author(s):

B. Maya ◽

R. Sunitha

Keyword(s):

Power Systems ◽

Modal Analysis ◽

Security Assessment ◽

Large Power ◽

Voltage Security

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Exhaustive Modal Analysis of Large-Scale Interconnected Power Systems With High Power Electronics Penetration

IEEE Transactions on Power Systems ◽

10.1109/tpwrs.2020.2969641 ◽

2020 ◽

Vol 35 (4) ◽

pp. 2759-2768

Author(s):

Mohamed Kouki ◽

Bogdan Marinescu ◽

Florent Xavier

Keyword(s):

Power Systems ◽

Modal Analysis ◽

Power Electronics ◽

High Power ◽

Large Scale ◽

Interconnected Power Systems

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Power System Nonlinear Modal Analysis Using Computationally Reduced Normal Form Method

Energies ◽

10.3390/en13051249 ◽

2020 ◽

Vol 13 (5) ◽

pp. 1249 ◽

Cited By ~ 1

Author(s):

Nnaemeka Sunday Ugwuanyi ◽

Xavier Kestelyn ◽

Bogdan Marinescu ◽

Olivier Thomas

Keyword(s):

Normal Form ◽

Power Systems ◽

Power System ◽

Modal Analysis ◽

Computation Time ◽

Approximate Model ◽

Polynomial Coefficients ◽

Normal Form Method ◽

Nonlinear Modal Analysis ◽

The One

Increasing nonlinearity in today’s grid challenges the conventional small-signal (modal) analysis (SSA) tools. For instance, the interactions among modes, which are not captured by SSA, may play significant roles in a stressed power system. Consequently, alternative nonlinear modal analysis tools, notably Normal Form (NF) and Modal Series (MS) methods are being explored. However, they are computation-intensive due to numerous polynomial coefficients required. This paper proposes a fast NF technique for power system modal interaction investigation, which uses characteristics of system modes to carefully select relevant terms to be considered in the analysis. The Coefficients related to these terms are selectively computed and the resulting approximate model is computationally reduced compared to the one in which all the coefficients are computed. This leads to a very rapid nonlinear modal analysis of the power systems. The reduced model is used to study interactions of modes in a two-area power system where the tested scenarios give same results as the full model, with about 70% reduction in computation time.

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