Study on voltage stability of power grid with large scale wind farm interconnected
2009
In some regional grids in China, wind power penetration will increase rapidly because of the abundant wind resources in those areas and the government policy impetus. As more and more attention is paid to the increase of wind-turbine farms, a number of problems should be investigated in more detail. Among these problems, the voltage stability of wind farms implemented with induction generators becomes necessary, especially when operating into a weak connection. Based on a actual regional power grid in China, this paper presents a detailed simulation analysis of the impact of large scale wind farm on voltage stability (dynamic voltage stability) of power system under a short-circuit fault performed by PSCAD/EMTDC. Factors influencing voltage stability of the local grid interconnected with the wind farm are analyzed, and measures to improve the voltage stability of power grid are proposed.
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