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Dynamic modeling of wind farms with variable-speed direct-driven PMSG wind turbines

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3 Author(s)
M. G. Molina ; Argentinean National Council for Science and Technology Research (CONICET), Argentina ; A. G. Sanchez ; A. M. Rizzato Lede

A wind farm usually consists of a large number of wind turbine generators (WTGs) connected through an internal electrical network and operating simultaneously. In order to study the impact of a wind farm on the dynamics of the power system, a major issue is to develop adequate equivalent models that allow characterizing the dynamics of all individual WTGs. In this sense, with the advance of power electronics, direct-driven permanent magnet synchronous generators (PMSGs) have drawn increased interest to wind turbine manufacturers due to its advantages over other variable-speed WTGs. This paper presents a comprehensive dynamic equivalent model of a wind farm with direct-driven PMSG wind turbines and its control scheme. The proposed simplified modeling is developed using the state-space averaging technique and is implemented in the MATLAB/Simulink environment. The dynamic performance of the wind farm and its impact on the power system operation is fully evaluated using the phasor simulation method.

Published in:

Transmission and Distribution Conference and Exposition: Latin America (T&D-LA), 2010 IEEE/PES

Date of Conference:

8-10 Nov. 2010