近幾十年來，歐美各國風場容量成長驚人，隨著風場在電力系統中佔比增高，未來風場將會逐漸取代傳統火力機組。若風場不具備負載頻率控制(load frequency control，LFC)的調頻功能，一旦傳統火力機組被風場取代之後，系統調頻能力可能會不足。本文提出之雙饋式風機調頻架構，經由偵測系統頻率誤差訊號及風機發電餘裕，對風機功率命令值做出修正，以達到調頻的目的。經由模擬驗證，確實有效提高頻率穩定性，且能改善傳統機組響應。本文利用變異數做為比較負載變動及風場出力變動的指標，做為判定執行風場調頻的參考，使之兼顧風場調頻模式及最大功率輸出之效能。經由模擬驗證，在獨立系統及互聯系統中，利用變異數做為啟動風場調頻的判別參考能有效降低頻率誤差及區域控制誤差量，改善傳統機組響應，並在調頻模式中有效提升風場發電量。

In recent decades, there are tremendous growing of wind farm capacities in the Europe and U.S. . With the large penetration of wind power into the system, the traditional fossil fuel unit is being replaced by the wine turbine. If wind turbines or wind farms do not have the function of load frequency control (LFC) , the capability of frequency regulation for power system may become insufficient after the traditional fuel unit be replaced with the wind farms.
To enhance system’s frequency regulation capability, the strategy of frequency regulation provided from doubly-fed induction generator (DFIG) is proposed by modifying
the power command of the wind turbine with frequency response signal of the power system. Simulation results show that the frequency regulation and responses of the
traditional units are improved effectively.
To a certain extent, we also consider both sides of frequency regulation and maximizing energy production by accessing the variations of load and output fluctuations
of wind farms. Simulation results also show that the proposed method not only effectively reduces frequency error in the isolated system or area control error in the interconnected system, but also improve the energy production of wind farms.

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