Abstract
The use of wind power has grown rapidly in recent years. Wind power is a clean source of energy, but can have negative impacts on the distribution grid. The influence of large-scale wind power integration on the safe and stable operation of a power system cannot be ignored. It is necessary and urgent to achieve grid adaptability for wind turbines in China. Using a 35 kV/6 MVA grid simulator, the performance of a grid is investigated by simulation. Typical grid disturbances such as voltage deviation, frequency fluctuation, voltage unbalance, and distortion can be simulated. A grid adaptability testing methodology was developed and applied to a doubly fed wind turbine with a focus on analyzing real test data to ascertain its three-phase voltage unbalance adaptability, which was successfully demonstrated. The methodology can also be used to guide other grid adaptability tests.
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