Scanning methods for stability analysis of inverter-based resources

Date

2022-01-01

Author

Seyedi, Younes
Karaağaç, Ulaş
Mahseredjian, Jean
Karimi, Houshang

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Recently, attempts have been made to understand and analyze the dynamic interactions between the power grids and the inverter-based resources (IBR) such as wind and solar photovoltaic (PV) parks. These adverse incidents that mainly stem from the controller interactions can lead to unwanted oscillations in sub- or super-synchronous frequency ranges, and thus jeopardize the reliable operation of power systems. To address such stability analysis issues, frequency-dependent impedance scanning techniques based on small-signal perturbations have been developed. This chapter deals with detailed explanation of different scanning methods that can be employed for predicting the stability issues and characterizing the sub- or super-synchronous oscillations. Implementation, computational burden, accuracy, and stability criteria for different scanning methods are also discussed. Stability assessment based on the scanning methods is investigated in three practical benchmark systems that involve full size converter (FSC) and doubly-fed induction generator (DFIG) wind parks. The positive-sequence, thedqand the αβ scans are applied to stable and unstable cases in each benchmark and the results are verified by the electromagnetic transient (EMT) simulations.

URI

https://digital-library.theiet.org/doi/abs/10.1049/PBPO217E_ch20
https://hdl.handle.net/11511/117802

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Department of Electrical and Electronics Engineering, Book / Book chapter