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題名 | Applying a Low Thermo-rating Braking Resistor Bank to Alleviate the Blade Vibrations in Turbine-generators=應用低熱額定煞車電阻庫減輕汽輪發電機葉片振動 |
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作者姓名(中文) | 蔡文昌; | 書刊名 | Journal of the Chinese Institute of Electrical Engineering |
卷期 | 8:3 2001.08[民90.08] |
頁次 | 頁257-266 |
分類號 | 448.2 |
關鍵詞 | 低熱額定; 煞車電阻庫; 葉片振動; Low thermo-rating; Braking resistor bank; BR; Blade vibration; |
語文 | 英文(English) |
中文摘要 | 本文研究建議採用一低熱額定煞車電阻庫,抑制電子系統故障所引起之汽機葉片振動。不像以往研究,本新方法係限制故障電流之初始值,以減少汽機葉片之振動。電力系統故障發生第一時間,將低熱額定煞車電阻庫插入電力系統,系統中感應產生之系統頻率成分電磁擾動轉矩將有效減少。因此,減緩汽機葉片振動應力衝擊,從模擬結果可知僅需投入煞車電阻庫一週波時間即足夠有效地抑制汽機葉片振動。因煞車電阻庫僅在電力系統故障發生瞬間投入作用,故它僅消耗少量能源。 |
英文摘要 | This paper proposes using a BR bank with low thermo-rating to suppress the blade vibrations in turbine-generators arising from power system faults. Unlke previous approaches did, the new approach restricts the initial amplitude of fault current to reduce the blade vibrations of turbine-generators. By inserting a BR bank with low thermo-rating into the power system at the beginning of power system disturbance, the induced system-frequency component of Electromagnetic (E/M) disturbing torque can be effectively reduced, thus alleviating impacts on the steam turbine blades. It can be found from the simulated results that only turning on the BR bank for one cycle is adequate to effectively damp the blade vibrations in the turbine-generators. Because the BR bank is activated at the instant of poer system disturbances, it will dissipate only a small amount of energy. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。