Phasor model of full scale converter wind turbine for small-signal stability analysis

Radu Gihga; Qiuwei Wu; Arne Hejde Nielsen

Phasor model of full scale converter wind turbine for small-signal stability analysis

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Author(s): Radu Gihga¹ ; Qiuwei Wu¹ ; Arne Hejde Nielsen¹
- Affiliations: 1: Centre for Electric Power and Energy, Department of Electrical Engineering , Technical University of Denmark , Denmark
Source: Volume 2017, Issue 13, 2017, p. 978 – 983
DOI: 10.1049/joe.2017.0476 , Online ISSN 2051-3305

This is an open access article published by the IET under the Creative Commons Attribution-NoDerivs License (http://creativecommons.org/licenses/by-nd/3.0/)

Received 09/10/2017, Accepted 01/11/2017, Published 01/01/2017

The small-signal stability analysis of power system electromechanical oscillations is a well-established field in control and stability assessment of power systems. The impact of large wind farms on small-signal stability of power systems has been a topic of high interest in recent years. This study presents a phasor model of full scale converter wind turbines (WTs) implemented in MATLAB/SIMULINK for small-signal stability studies. The phasor method is typically used for dynamic studies of power systems consisting of large electric machines. It can also be applied to any linear system. This represents an advantage in small-signal stability studies, which are based on modal analysis of the linearised model and are usually complemented with dynamic simulations. The proposed model can represent a single WT or an aggregated wind power plant. The implemented model for small-signal stability analysis was tested in the Kundur's two area system. The results show that the proposed WT model is accurately linearised and its impact on power system oscillation is similar to that of previous research findings.

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Phasor model of full scale converter wind turbine for small-signal stability analysis

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