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Oscillations between Grid-Forming Converters in Weakly Connected Offshore WPPs

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arxiv 2402.14317 v1 pith:QJ47AECB submitted 2024-02-22 eess.SY cs.SY

Oscillations between Grid-Forming Converters in Weakly Connected Offshore WPPs

Sulav Ghimire , Kanakesh V. Kkuni , Gabriel M. G. Guerreiro , Emerson D. Guest , Kim H. Jensen , Guangya Yang This is my paper
classification eess.SY cs.SY
keywords controlmethodsoscillationscasesconnectedconvertersgrid-formingoffshore
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This paper studies control interactions between grid-forming (GFM) converters exhibited by power and frequency oscillations in a weakly connected offshore wind power plant (WPP). Two GFM controls are considered, namely virtual synchronous machine (VSM) and virtual admittance (VAdm) based GFM. The GFM control methods are implemented in wind turbine generators (WTGs) of a verified aggregated model of a WPP and the control interaction between these GFM WTGs is studied for several cases: cases with the same GFM control methods, and cases with different GFM control methods. A sensitivity analysis is performed for the observed oscillations to understand which system parameter affects the oscillations the most. Several solution methods are proposed and the inapplicability of some of the conventional solution methods are elaborated in this paper.

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