- 作者: 王醴; 黃明陽
- 作者服務機構: 成功大學電機工程研究所
- 中文摘要: 本篇論文主要在於研究如何應用靜態相移器來抑制電力系統串聯電容補償所引起之次同步扭轉交互作用之現象。文中以IEEE第二標準模型第一系統為研究模型,將一組可調整系統電壓之相移器連接於發電機輸出端上,藉以抑制轉軸扭轉振盪特性。為了達到在不同運轉條件下皆可抑制所有的扭轉模態之目的,文中利用模態控制理論之方法,設計了一組控制器加入系統中,之後分別以系統特徵值分析法和非線性模型做電腦模擬,以驗證相移器在改善系統穩定度和抑制次同步模態交互作用之功效。由模擬結果得知:藉由一組可調整系統電壓相角之靜態相移器確實可有效地抑制轉軸扭轉振盪之現象。
- 英文摘要: An effective method which incorporates with a unified approach for stabilizing subsynchronoustorsional oscillations in a large turbine generator system containing series-capacitor compensation ispresented in this paper. The proposed scheme utilizes a set of thyristor-controlled static phase shiftersto modulate the active power transmission by injecting a quadrature phase voltage between the generatorand the step-up transformer in the IEEE Second Benchmark Model, system-1 A control strategy basedon modal control theory is developed to design a set of damping controllers in order to shift the unstabletorsional modes to the desired locations on the complex plane An eigenvalue technique is employedto validate the designed controller under different loading conditions. Time-domain simulations have alsobeen performed to examine the effectiveness of the proposed scheme under a severe three-phase short-circuit fault. The simulation results show that the static phase shifters incorporated with the designedcontroller can effectively suppress subsynchronous resonance in the studied system.
- 中文關鍵字: subsynchronous torsional oscillations; static phase shifters; modal control theory
- 英文關鍵字: --