隨著電力系統結構逐漸改變，分散式電源於電網中的穿透率逐漸
增加，以及電力需求日益增加，並且不易增設電廠，所以電力系統
穩定度備受考驗；因此，彈性交流傳輸系統的重要性不可以被忽略，
其中，靜態同步補償器為有潛力的解決方案，是改善電力系統穩定
性的電力電子設備。
此篇論文首先探討電壓源轉換器之架構與控制策略，透過頻率響
應方法，來設計所需的控制器；基於同步框理論，設計鎖相迴路之
補償器，追蹤電壓相位，將交流數值轉為直流數值，簡化三相電壓
源轉換器之控制器設計複雜度；接著研究靜態同步補償器之控制與
功能，由中點並聯補償可以證明，靜態同步補償器可以增加電力系
統暫態穩定度；接著設計實虛功控制器，直流電壓控制器，以及交
流電壓控制器，透過成串的方式，來調節所需控制的命令值；再引
入被動控制方法，透過李亞普諾夫穩定度理論，來設計電流控制器，
並且比較傳統控制和被動控制方法；最後，為了即時模擬靜態同步
補償器與實際電網的互動，因為在實際上，要將現實中的靜態同步
補償器硬體，與實際電網結合，來測試其功能，是相當困難的，必
須在安裝實際的靜態同步補償器之前，要完善的驗證其可行性，因
此於本研究中，使用即時模擬器，建立即時模擬平台，提出模擬方
法和流程，來驗證控制器之可行性。

As the structure of the power system changes day by day, the penetra-
tion of distributed generation units increases in microgrids, and the power
supply can not meet the demand. Thus, the power system stability has been
faced with a lot of challenges. Therefore, the importance of Flexible AC
Transmission System (FACTS) can not be ignored nowadays. One of the
members, Static Synchronous Compensator (STATCOM), is a potential so-
lution to improve the power system stability.
In the thesis, the basic structure and control strategies of a Voltage-
Sourced Converter (VSC) system are investigated at first. Through the fre-
quency loop shaping method, the compensator is properly designed. Based
on the synchronous reference frame theory, the compensator of Phase-Locked
Loop (PLL) is designed in order to track the grid voltage. It can reduce the
complexity of the control the three-phase VSC system. Then, the control
and functionalities of STATCOM are studied, and the passivity-based con-
trol (PBC) method is introduced in order to compare with the conventional
STATCOM control method. Because it is difficult to test the STATCOM
with a real power system, the real-time simulation platform is built in or-
der to interface the STATCOM with a virtual grid, which likes a real one.
Also, the Real-Time Simulator (RTS) is used as a controller to control the
real converter, which is known as Hardware-in-the-Loop (HIL). The sim-
ulation procedure is proposed to verify the feasibility of the STATCOM
control.

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