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研究生:吳榮慶
研究生(外文):Wu, Rong Ching
論文名稱:多機系統轉軸振動分析
論文名稱(外文):VIBRATION ANALYSIS OF TURBINE-GENERATOR SHAFTS IN A MULTIMACHINES POWER SYSTEM
指導教授:曹大鵬曹大鵬引用關係
指導教授(外文):Tsao, Ta Peng
學位類別:碩士
校院名稱:國立中山大學
系所名稱:電機工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:1994
畢業學年度:82
語文別:中文
論文頁數:81
中文關鍵詞:多機系統轉軸振動
外文關鍵詞:A multimachines power systemShaftVibration
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基於熱效率與機械原理的許多優點,渦輪發電機較其它發電機更適用於大
型電力系統,隨著設備與製造技術日趨精良,致使較低單位建設成本及營
運成本的更大型機組得以產生。然而受限於材料開發之瓶頸,各項構件不
再保有如往昔般大的安全因數,轉軸與低壓渦輪機的長葉片在正常工作時
即已承受很大的應力,當機組遭逢電力擾動或形成共振狀態時,其額外增
加之應力更可能導致金屬疲勞,長期累積的疲勞損失將造成轉軸的損毀,
引起嚴重的事故及重大的損失。本論文從整合各學域之理論與相關文獻起
始,融合電力系統、控制系統、機械系統之工作原理,建立一套完整模型
。鑑於以往分析轉軸振動問題,僅侷限於單機或雙機電力系統,對於實際
龐大複雜的電力系統暫態現象,仍然只是近似程度,為了充分瞭解在事故
發生時因發電機之間的交互作用所造成的影響,我們建立了多機系統模型
,以期對系統分析上有更精確的動態行為響應。本論文所發展出來的分析
程式,其結果可供系統設計評估、運轉前測試、電力事故調查之用,所模
擬項目涵蓋電力系統網路不同型式的故障,開關操作切換、機組跳脫、負
載切離等現象,為系統動態模擬分析上一強而有力的工具,且提供更進一
步研究的堅實基礎。

On the basis of the advantages of heat efficiency and
mechanicals principles , the turbine generator is more
adapted to large power system than other kinds of generators.
The advances of apparatus and production techniques result in
the production of larger generator set with a lower
construction and operation cost per unit .However, limited
to the material development difficulty, each essential factor
no longer keeps up safety factor as it did before. The blades
of shafts and low pressure turbine section have sustained
great stress in normal operation . If the generator set is
in electrical distribution or resonance conditions , the
increasing stress might cause material fatigue. The loss of
accumulated fatigue will cause shafts' damage and even
severe incidents and disadvantages . This dissertation
begins with the theories of the combination of each field and
relative records, and sets up a complete model by combining
power system , control systems, and mechanical system .
Generally , shaft vibration analysis restricted only to
single set or double set power system can not completely
explain practical complicated power system phenomena. In order
to realize the influence caused by the interaction among
generators during , when the incidents take place, we expect
the established multimachines system model could arouse more
practical reflection in system analysis. The analysis
principles mentioned in this dissertation can offer an
important feature in the assessment of machine system design,
pre-commissioning test appraisals and post-event damage
diagnose . The various breakdown of power system network,
switch operation , generator trip , and load rejection are
included in the simulation . These analysis principles are
effective in system dynamic simulation analysis and offer
strong basis for advanced research.

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