本論文係研究以靜態同步串聯補償器來抑制含有蒸汽渦輪機以及風力渦輪機發電系統之次同步共振。文中第一個研究系統係以超導同步發電機與雙饋式感應發電機風場取代國際電機電子工程師學會次同步共振之第二標準模型、第一系統的傳統同步發電機；文中第二個研究系統係整合標準模型與雙饋式感應發電機為主之離岸式風場，經由共同匯流排與串聯補償電容器連接至無限匯流排，探討當離岸式風場併入後，對原有系統所造成之影響。本論文於三相平衡系統下利用交直軸等效電路模型，分別建立同步發電機、以雙饋式感應發電機為主之離岸式風場與靜態同步串聯補償器等模型，並利用極點安置法設計靜態同步串聯補償器之比例-積分-微分阻尼控制器。在穩態特性方面，針對線路串聯補償比、同步發電機之端電壓、輸出功率、輸出功率因數以及風場風速變動做頻域特徵值分析。在動態及暫態模擬方面，完成轉矩干擾、風速變動以及三相短路故障等模擬結果。由穩態、動態及暫態模擬結果得知，當加入靜態同步串聯補償器結合比例-積分-微分阻尼控制器後，能有效抑制次同步共振。

This thesis presents the suppression of subsynchronous resonance (SSR) in power systems with a steam-turbine system and a wind-turbine generation system using a static synchronous series compensator (SSSC). The first studied system uses a superconducting synchronous generator (SCSG) and a doubly-fed induction generator (DFIG)-based wind farm to replace the synchronous generator (SG) in the IEEE Second Benchmark Model, system-1. The second studied system is based on the IEEE Second Benchmark Model, system-1 joining with a DFIG-based offshore wind farm (OWF). The d-q axis equivalent-circuit model under three-phase balanced loading conditions is used to establish the complete studied systems. A proportional-integral- derivative (PID) damping controller of the SSSC is designed by using pole-assignment approach based on modal control theory. Steady-state characteristics of the studied system under different series compensation ratios, wind speed of the OWF as well as the terminal voltage, output active power, and power factor of the SG are performed. Time-domain dynamic simulations under disturbance conditions are also carried out. The results show that the proposed SSSC joined with the designed damping controller are effective to suppress the SSR of the studied power systems.

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