The temperature rise hazard caused by negative sequence current on wind turbines has been repeatedly proven in the operation practice of power systems in large mining areas and it is crucial to accurately calculate the impact of temperature rise generated by negative sequence current on the generator.By analyzing the transient negative sequence capability of wind turbines in large mining areas,and taking a 5.5 MW high-power wind turbine as an example,the finite element method was used to calculate the negative sequence loss and corresponding temperature rise caused by transient negative sequence current.The research results indicate that the larger the transient negative sequence current,the greater the negative sequence loss and temperature rise hazard generated by the generator.The calculation process and results will lay the foundation and provide reference for the transient negative sequence capability of installing larger capacity wind turbines in large mining areas.
关键词
大型矿区/风力发电机/瞬态负序能力/有限元法
Key words
Large mining areas/Wind turbine/Transient negative sequence capability/Finite element method
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