本論文研究太陽能智慧變流器之虛功率調控方法與設計， 並提出饋線電壓控制之改善方法 。本研究使用 MATLAB/Simulink來建立配電系統模型，利用鎖相環的功能，使太陽能之智慧變流器的模型能精準地控制實功率與虛功率的輸出 。 結合 夏月住宅型之逐時負載 量 與晴天之逐時 太陽能 發電量，分析不同負載 模型 的負載特 性 在討論不平衡的情境時， 依比例分配三相不平衡的負載量與太陽能發電量， 本文先 利用智慧變流器的虛功率調控方法來改善電壓 問題 接者加入饋線調壓器一同做電壓控制，分析並提出設備之間協調的建議，預期能提供實務運轉上的助益。最後利用 MATLAB撰寫牛頓法的程式 以混合模型的架構做饋線電壓 的 控制 ，比較時域模擬及電力潮流分析的差異。

This thesis studies the application of reactive power control of photovoltaic smart inverters in the voltage control of distribution feeders. This study uses MATLAB/Simulink to establish a distribution system model. With the function of phase-locked loops, the model of photovoltaic smart inverter can accurately control the output of real power and reactive power. Hourly load of summer residential users and hourly power generation in sunny days are used. With load characteristics of different load models, the three-phase unbalanced load and photovoltaic generation are then distributed in proportion to each phase. It is to use the reactive power control method of smart inverters to improve the voltage problems. And then it also joins the feeder voltage regulator to do furthermore voltage control. It is also to make suggestions for coordination between smart inverters and feeder voltage regulators. The smart inverters can improve the voltage profile and is expected to provide practical operation benefits. Finally is also use MATLAB to write the power flow program by using Newton method, and use the mixed model to control the feeder voltage.

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