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Stability analysis of power transmission of offshore wind farms fed to onshore power grids using a multi-terminal VSC-HVDC system

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2 Author(s)
Mi Sa Nguyen Thi ; Department of Electrical Engineering, National Cheng Kung University, Tainan City, Taiwan ; Li Wang

This paper presents the analyzed results of a novel power transmission scheme for delivering large generated active power of doubly-fed induction generator (DFIG)-based offshore wind farms (OWFs) fed to onshore AC grids using a multi-terminal HVDC (MT-HVDC) system based on voltage-source converter (VSC). Control scheme for the MT-HVDC system is proposed and designed to transmit total generated active power to two AC grids under various operating conditions. A frequency-domain approach based on a linearized system model using eigenvalue technique and a time-domain scheme based on a nonlinear system model subject to normal and disturbance conditions are both proposed. The modeling and simulations of this paper have been carried out to validate the stability of the proposed control scheme on power transmission of the MT-HVDC system using Matlab/Simulink.

Published in:

Circuits and Systems (APCCAS), 2012 IEEE Asia Pacific Conference on

Date of Conference:

2-5 Dec. 2012