In order to quickly and effectively adjust the system frequency change caused by the imbalance of the system load, the wind turbine must have a frequency response and frequency modulation control level similar to that of the synchronous generator. Under this requirement, the size of the active reserve capacity of the wind turbine or wind farm It is very important. In general, conventional generator sets are required to provide a certain amount of spinning reserve for wind turbines to meet the purpose of suppressing wind power fluctuations. However, due to the increase in the installed capacity of wind power, the reserve capacity will also become larger. If only conventionally generated generator sets provide spinning reserve, it will greatly increase the capital investment of the power system, and in this case, it is still not enough for wind turbines to participate in the system. FM requirements.
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