Analysis of low frequency oscillation in multi-area power system based on incomplete elliptic integral

Mi, Xiao; Wang, Jie; Wang, Rui

doi:10.1016/j.ijepes.2017.04.002

Cited by 5 publications

(1 citation statement)

References 27 publications

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“…Some references propose the concept of energy flow and quantitatively deduce the correlation between the real part of eigenvalue and energy dissipation (Chen et al, 2013a;Chen et al, 2013b). Furthermore, the transient energy is also applied to the identification of oscillation source units (Yu et al, 2010;Li et al, 2013a;Li et al, 2013b) and the classification of low-frequency oscillation types (Mi et al, 2018). In the work of Chen et al (2016), the transient energy flow method has been expanded to analyze SSO, and an expression for the transient energy during SSO is proposed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of sub-synchronous oscillation characteristics of PMSGs based on transient energy

Yan,

Wang,

Yang

et al. 2023

Front. Energy Res.

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Faced with the problem of sub-synchronous oscillation (SSO) caused by the interaction between permanent magnetic synchronous generator (PMSG)-based wind farms and weak AC grids, we construct a transient energy function model that follows the structure of a PMSG. The transient energy composition of a PMSG is analyzed, and the dissipation energy expression that can intuitively reflect the development trend of SSO is derived, reflecting the damping level of a grid-connected wind power system. Furthermore, in response to the problem of mutual coupling between the control links of the PMSG during the SSO process, which hinders oscillation characteristic assessment, a method based on oscillation energy is proposed to analyze the oscillation characteristics. Considering the dynamic changes in the output of the phase-locked loop during sub-synchronous oscillation, the transient energy dominated by various control links is derived, and the effects of the phase-locked loop, current inner loop, and voltage outer loop on transient energy and oscillation characteristics are analyzed. The simulation verifies the effectiveness of the analysis of the transient energy model.

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Section: Introductionmentioning

confidence: 99%