自動發電控制功能包含負載頻率控制、經濟調度及備載容量監視，即將現有電力系統發電設備作最佳的運用，以穩定系統頻率品質，降低發電成本，維持電力系統供電安全。其中在負載頻率控制提高系統頻率品質，有賴自動發電控制調度與電廠發電配合，快速反應需求發電量。本論文主要在探討有關電力系統頻率變動機制及控制方式，期能加快機組出力反應速度，並在配合自動發電控制調度之特性下，推演出興達電廠複循環氣渦輪機數學模型，並利用此數學模型以模擬方式決定出前饋式負載控制器增益，將其導入氣渦輪機之負載控制中，最後經由前後現場實際量測結果來驗証所提控制方式之可行。

Automatic generation control (AGC) of a power system consists of load frequency control (LFC), economic dispatch and reserved capacity monitoring. The purposes of AGC are to optimize the power generation, to make the power system stable, and to reduce the cost. LFC is to make fast response to the demand requirement of a power system by dispatching the proper generator output. The study discussed the mechanism of frequency variation in the Taiwan power system and the suitable control strategy to speed up the generator response. We developed a mathematic model for the combined cycle unit gas turbine in Hsin-Ta power station and thereby decided the gain of feed-forward load controller. Finally, the proposed control method was verified by the actual unit power generation data from the field tests.

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