A Novel Method for Accelerating the Analysis of Nonlinear Behaviour of Power Grids using Normal Form Technique - Archive ouverte HAL Access content directly
Conference Papers Year : 2019

A Novel Method for Accelerating the Analysis of Nonlinear Behaviour of Power Grids using Normal Form Technique

Abstract

Today's power systems are strongly nonlinear in essence and are becoming more complex with the large penetration of power-electronics interfaced generators. Conventional Linear Modal Analysis does not adequately study such a system with complex nonlinear behavior. Inclusion of higher-order terms in small-signal (modal) analysis, associated with the Normal Form theory proposes a nonlinear modal analysis as an efficient way to improve the analysis. However, heavy computations involved make Normal Form method tedious, and unamenable to large power system application. In this paper, we present a less rigorous and speedy approach for obtaining the required nonlinear coefficients of the nonlinear equations modelling of a power system, without actually going through all the usual high order differentiation involved in Taylor's expansion. The proposed method is demonstrated on the conventional IEEE 9-bus system and 68-bus New England/New York system.
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Dates and versions

hal-02516492 , version 1 (23-03-2020)

Identifiers

  • HAL Id : hal-02516492 , version 1

Cite

Nnaemeka Sunday Ugwuanyi, Xavier Kestelyn, Olivier Thomas, Bogdan Marinescu. A Novel Method for Accelerating the Analysis of Nonlinear Behaviour of Power Grids using Normal Form Technique. ISGT Europe, Sep 2019, Bucarest, Romania. ⟨hal-02516492⟩
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